CN110357393A - A kind of nano flocculant and preparation method for sludge settling - Google Patents
A kind of nano flocculant and preparation method for sludge settling Download PDFInfo
- Publication number
- CN110357393A CN110357393A CN201811040780.7A CN201811040780A CN110357393A CN 110357393 A CN110357393 A CN 110357393A CN 201811040780 A CN201811040780 A CN 201811040780A CN 110357393 A CN110357393 A CN 110357393A
- Authority
- CN
- China
- Prior art keywords
- flocculant
- preparation
- nano
- sludge
- ammonium chloride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 71
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003814 drug Substances 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 14
- 238000005273 aeration Methods 0.000 claims abstract description 12
- PZNOBXVHZYGUEX-UHFFFAOYSA-N n-prop-2-enylprop-2-en-1-amine;hydrochloride Chemical compound Cl.C=CCNCC=C PZNOBXVHZYGUEX-UHFFFAOYSA-N 0.000 claims abstract description 9
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 claims abstract description 8
- 238000002474 experimental method Methods 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 7
- 238000009826 distribution Methods 0.000 claims abstract description 6
- 238000004062 sedimentation Methods 0.000 claims abstract description 6
- 238000011282 treatment Methods 0.000 claims abstract description 6
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 13
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims description 12
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 11
- 238000006116 polymerization reaction Methods 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 238000013019 agitation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000004065 wastewater treatment Methods 0.000 claims description 7
- 239000010842 industrial wastewater Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000010790 dilution Methods 0.000 claims description 4
- 239000012895 dilution Substances 0.000 claims description 4
- 238000004043 dyeing Methods 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 230000032683 aging Effects 0.000 claims description 3
- -1 dimethyl diene Chemical class 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000005189 flocculation Methods 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 claims description 3
- 239000002105 nanoparticle Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 claims description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 2
- 230000029087 digestion Effects 0.000 claims description 2
- 229910000397 disodium phosphate Inorganic materials 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 claims description 2
- 238000003760 magnetic stirring Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- PYNUOAIJIQGACY-UHFFFAOYSA-N propylazanium;chloride Chemical compound Cl.CCCN PYNUOAIJIQGACY-UHFFFAOYSA-N 0.000 claims 1
- 238000009941 weaving Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 239000010865 sewage Substances 0.000 abstract description 9
- 238000012545 processing Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000008394 flocculating agent Substances 0.000 abstract description 3
- 239000000470 constituent Substances 0.000 abstract 1
- 229940079593 drug Drugs 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 238000004321 preservation Methods 0.000 description 7
- 241000196324 Embryophyta Species 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 229920000620 organic polymer Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 229920000592 inorganic polymer Polymers 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 241000238370 Sepia Species 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of nano flocculants and preparation method for sludge settling, belong to environment and technical field of chemistry.First, including nano flocculant and preparation method, its constituent are as follows: solid content is that the mass fraction of 20% polydimethyl diallyl ammonium chloride is 9.88%, and the dimethyl diallyl ammonium chloride mass fraction that solid content is 60% is 0.82%, the mass fraction of Fe is 0.85%, and surplus is water.Density is 1.1-1.2 at 20 DEG C, and pH 1.80-1.90, particle diameter distribution is between 60-100nm.Secondly, the nano flocculant is diluted 300 times, municipal administration, trade effluent factory activated sludge sedimentation experiment were used for after the preparation same day and placement 45 days.As a result show: 2min offers medicine before aeration terminates, and drug concentration is 20 μ L/L, and aerobic tank activated sludge effect of settling is dramatically speeded up.Therefore, nano flocculant of the invention has the advantages such as inventory is few, performance is stable, sludge settling is fast, has a wide range of application, and facilitates the sewage treatment plants such as municipal administration, industry and improves processing water and reduce secondary settling tank occupied area.
Description
Technical field
The invention belongs to environment and technical field of chemistry, and in particular to one kind can significantly improve activated sludge settling property
Flocculant, i.e. poly-ferric chloride-polydimethyl diallyl ammonium chloride-dimethyl diallyl ammonium chloride nano flocculant
Preparation method.
Background technique
Sludge bulking is that more common problem, sludge bulking will lead to work in activated sludge process sewage disposal technology
Property sludge quality lighten, settling property deteriorate, it is difficult to carry out normal mud-water separation, in secondary settling tank so as to cause effluent quality
It is deteriorated, directly affects wastewater treatment efficiency.The exploitation of Aerobic Granular Sludge Technology at present, to solve the problems, such as that sludge bulking provides
New approaches, but the presence in the complexity and granule stability of water quality the problems such as make the technology still face in engineering application
Face lot of challenges.Inorganic molysite and aluminum salt flocculant add, and can be effectively controlled sludge bulking, improve sludge settling property, but
There are added amount of chemical greatly, to the problems such as position and hybrid mode requirement are accurate is added, and causes sludge settling effect not significant, and
And a large amount of excess sludges can be generated, it is unfavorable for the realization of sludge reduction target.And organic polymer coargulator is individually added, though
Sludge settlement rate can be so effectively improved, but processing cost is excessively high.
In addition, the mud-water separations such as high compared to energy consumption, investment is high membrane technology, filtering cloth filtering pool technology, ultrahigh speed sedimentation basin
How technology improves sludge self gravitation effect, strengthens mud-water separation process, is the important ring in active sludge processing system
Section, plays a significant role the raising for the treatment of process whole efficiency.
Therefore, for presently, there are inorganic molysite, aluminum salt flocculant and inorganic organic composite coagulator dosage it is big, dirty
The innovation of the defects of mud effect of settling is not significant, the nano flocculant for sludge rapid subsidence of the invention is, adopts
It is carried out with nanoscale polymerized iron chloride (particle diameter distribution is between 30-60nm) with dimethyl diallyl ammonium chloride and its homopolymer
It is compound, obtain nano flocculant of the particle diameter distribution between 60-100nm.The nano flocculant, which had both remained Ferric Salt Flocculants, to be made
With range is wide, low-cost advantage, simultaneously because nano-particles size is small, large specific surface area, thus there is higher reaction work
Property.By nanometer polymerization iron chloride and with dimethyl diallyl ammonium chloride and its homopolymerization of high molecular weight and high density positive charge
Object progress is compound, effectively increases positive surface charge and surface energy, makes to adsorb charge neutrality and adsorption bridging ability significantly increases.Together
When, the addition of polydimethyl diallyl ammonium chloride can significantly improve the effective component Fe in poly-ferric chlorideb(Fe3+Hydroxyl
Polymer, including first polymers, oligomer and middle polymers) content increase, to further increase flocculation efficiency.Of the invention receives
Rice flocculant is acted on by neutralizing sludge surface charge, and using the adsorption bridging of inorganic and organic polymer itself, can
The stationary state of oil removal is solved, sludge rapid aggregation is promoted, forms agglomerate sludge wadding body, and accelerate under self gravitation effect
Sedimentation.Therefore, nano flocculant of the invention has the advantages such as dosage is small, flocculating effect is significant, processing cost is low, to be
It solves sludge bulking and muddy water efficiently separates and opens new approach.
Summary of the invention
For presently, there are the sludge settling time it is long, flocculant consumption is big and economic cost is high the problems such as, it is of the invention
Purpose is to research and develop a kind of nano flocculant and preparation method for sludge settling, it is intended to improve sludge settlement rate, realize mud
The efficient quick separating of water improves effluent quality.
To achieve the above object, it is as follows to provide technical solution by the present invention:
A kind of nano flocculant and preparation method for sludge settling, by solid content be 20%, mass fraction is
The dimethyl diallyl that 9.88% polydimethyl diallyl ammonium chloride, solid content 60%, mass fraction are 0.82%
The Fe that ammonium chloride and mass fraction are 0.85% is formed, and density is 1.1-1.2 at 20 DEG C of the flocculant, and pH 1.80-1.90 receives
Rice corpuscles particle diameter distribution is between 60-100nm；
The preparation method of the nano flocculant the following steps are included:
Step 1, the preparation of nanometer polymerization iron chloride: by FeCl3·6H2O is that 1:10-14 is abundant with distilled water in mass ratio
Then mixed dissolution is slowly added to Na in whipping process2CO3Solid powder makes basicity 0.5-1.5, adds certain matter
The Na of amount2HPO4As stabilizer, under the conditions of revolving speed is 900rpm, after magnetic agitation 12-16h, it is placed in 4 DEG C of refrigeration ageing 1-6
It, it is ensured that in obtained polyaluminium ferrous solution, poly-ferric chloride particle diameter distribution is between 30-60nm, and wherein the quality of Fe is divided
Number is 1.4-1.8%；
The preparation of nano flocculant: step 2 under the conditions of reaction temperature is 25-30 DEG C, will contain obtained in step 1
Polydimethyl diallyl ammonium chloride that nanometer polymerization iron chloride that Fe amount is 1.4-1.8% and solid content are 20%, solid content
For 60% dimethyl diallyl ammonium chloride according to mass ratio be 32-38: 32-38: 1 mixing, revolving speed be 900rpm condition
Under, magnetic agitation 4-8h, obtaining partial size is 60-100nm nano flocculant.
Resulting nano flocculant dilutes 300 times, is used for activated sludge sedimentation experiment after the preparation same day and placement 45 days,
Medicament is added in 30s-5min before aeration terminates, and added amount of chemical is 5-50 μ L/L.
The mass fraction of the Fe is 1.46-1.72%.
The basicity is 1.
The magnetic stirring apparatus revolving speed is 900rpm, and the magnetic agitation time is 15h.
The Aging Temperature is 4 DEG C, and digestion time is 1-6 days.
The mass ratio of the poly-ferric chloride and polydimethyl diallyl ammonium chloride, dimethyl diallyl ammonium chloride
It is 35.87: 35.99: 1, reaction temperature is 25-30 DEG C.
The aeration time is 2min.
The flocculant dosage is 20 μ L/L.
The flocculant is as water treatment agent in the Industrial Waste Water Treatments such as municipal administration, textile printing and dyeing, chemical industry factory sludge settling
There is good application in the process.
Nano flocculant of the invention is tested for sludge settling, compared with existing sludge settling and isolation technics, is had
Following excellent results:
First is that making it retaining Ferric Salt Flocculants dispensing, range is wide and processing cost by introducing nanoscale polymerized iron chloride
On the basis of low advantage, by improving its specific surface area and specific surface energy, enhance its absorption property, to effectively reduce medicament throwing
Dosage reduces economic cost, reduces surplus sludge volume；Second is that the absorption charge neutrality having in poly-ferric chloride itself and bridging
On the basis of energy, by introducing dimethyl diallyl ammonium chloride and its homopolymer in right amount with high density positive charge, improving
While poly-ferric chloride effective component, the absorption charge neutrality and bridge formation performance of the composite flocculation agent are further increased, dirt is promoted
Mud is quickly agglomerated into compared with big flocculating body.The effects of these widened wadding bodies are swept by absorption, bridge formation, volume promotes sludge wadding body solidifying
It is poly-, while the rapid subsidence under the effect of gravity therewith such as make tiny particle, colloid, realize muddy water quick separating without it
His separating technology.Poly-ferric chloride-polydimethyl diallyl ammonium chloride-dimethyl diallyl ammonium chloride nanometer of the invention
Flocculant has nanoparticle, inorganic and organic polymer coargulator collaboration advantage, the simple, dosage with preparation process
Less, efficiently, it is economical, have a wide range of application, the features such as stability is good.The flocculant can be used in burst caused by handling sludge bulking
The mark that mentions of event and activated sludge sewage treatment plant is transformed.
Specific embodiment
One of embodiment of the present invention is described in detail below.
A kind of nano flocculant and preparation method for sludge settling, wherein the following steps are included:
Step 1: the preparation of nanometer polymerization iron chloride:
By 5.53g FeCl3·6H2O is substantially dissolved in 61.13g distilled water, and 2.173g is slowly added in whipping process
Na2CO3Powder to basicity is 1, needs used time 2h in total, then adds 0.1164g Na2HPO4As stabilizer, turning
Speed is after magnetic agitation 15h, to be placed in 4 DEG C of refrigerations under 900rpm and be aged 1-6 days, obtain sepia nanometer polymerization ferric chloride solution,
Wherein the mass fraction of Fe is 1.72%；
Step 2, the preparation of nano flocculant: accurately weighing poly-ferric chloride 5.6g obtained in step 1, in room temperature item
Under part, the polydimethyl diallyl ammonium chloride 5.6180g that solid content is 20%, solid content are slowly added to during magnetic agitation
60% dimethyl diallyl chlorination 0.1561g, makes the mass ratio 35.87: 35.99: 1 of three.It is 900rpm in revolving speed
Under, nano flocculant is obtained after magnetic agitation 5h.
Above-mentioned resulting nano flocculant is used for sludge settling experiment, specific implementation process is:
Nano flocculant is diluted 300 times, on the day of dilution and after placing 45 days, the flocculant for diluting the same day is denoted as medicine
Agent a, the flocculant after placing 45 days are denoted as medicament b, and 2min is added in 1L aerobic tank activated sludge before aeration terminates, control
Added amount of chemical processed is 20 μ L/L, is compared with the blank sludge of not adding medicine, by measuring SVI value, measures gained nanometer wadding
Settling property and stability of the solidifying agent to sludge.
It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under thinking of the invention, above embodiments
Or it can also be combined between the technical characteristic in different embodiments, and there are different aspects present invention as described above
Many other variations, in order to it is concise they do not provided in details.Therefore, all within the spirits and principles of the present invention,
Any omission, modification, equivalent replacement, improvement for being made etc., should all be included in the protection scope of the present invention.
Nano flocculant of the present invention applies in sludge settling as water treatment agent, is explained below with Application Example
State specific application effect.
Application implementation citing:
1) it by nano flocculant of the invention, is handled for Beijing's municipal sewage plant A aerobic tank sludge settling,
It is compared simultaneously with the sludge blank of not adding medicine.Medicament is added in 30s-5min before aeration terminates, and the aeration time can be with
For 2min, the added amount of chemical is 5-50 μ L/L, calculates sludge volume index SVI (mL/g) in 5min, is as a result listed in table 1.
1 nano flocculant of table handles Beijing's municipal sewage plant A aerobic tank sludge settling effect, and (dosage is 20 μ L/
L)
From the above processing result as it can be seen that working as 300 times of nano flocculant dilution of the invention in preparation with blank
It and after placing 45 days, can quickly improve the rate of settling of municipal sewage plant activated sludge, the SVI value of sludge is small when 5min
In 90mL/g.And preparation flocculant can permanent routine preservation, to preservation condition no requirement (NR), it is seen that it is with very strong stabilization
Property.
2) it by nano flocculant of the invention, is handled for Beijing's municipal sewage plant B aerobic tank sludge settling,
It is compared simultaneously with the sludge blank of not adding medicine.Medicament is added in 30s-5min before aeration terminates, and the aeration time can be with
For 2min, the added amount of chemical is 5-50 μ L/L, calculates sludge volume index SVI (mL/g) in 5min, is as a result listed in table 2.
2 nano flocculant of table handles Beijing's municipal sewage plant B aerobic tank sludge settling effect, and (dosage is 20 μ L/
L)
From the above processing result as it can be seen that working as 300 times of nano flocculant dilution of the invention in preparation with blank
It and after placing 45 days, can quickly improve the rate of settling of municipal sewage plant activated sludge, the SVI value of sludge is small when 5min
In 90mL/g.And preparation flocculant can permanent routine preservation, to preservation condition no requirement (NR), it is seen that it is with very strong stabilization
Property.
3) it by nano flocculant of the invention, is handled for Jiangsu Province's Industrial Waste Water Treatments factory C aerobic tank sludge settling,
It is compared simultaneously with the sludge blank of not adding medicine.Medicament is added in 30s-5min before aeration terminates, and the aeration time can be with
For 2min, the added amount of chemical is 5-50 μ L/L, calculates sludge volume index SVI (mL/g) in 5min, is as a result listed in table 3.
3 nano flocculant of table handles Jiangsu Province Yixing Industrial Waste Water Treatments factory aerobic tank sludge settling effect (dosage
For 20 μ L/L)
The above processing result as it can be seen that and blank, nano flocculant of the invention is diluted 300 times, on the day of preparation
And after placing 45 days, the rate of settling of the Industrial Waste Water Treatments factory activated sludge such as printing and dyeing can be quickly improved, sludge when 5min
SVI value be 101.87mL/g.And preparation flocculant can permanent routine preservation, to preservation condition no requirement (NR), it is seen that it has
Very strong stability.
By the sludge settling experimental result it is found that the SVI value of sludge is less than 90-102mL/g when 5min.It can be seen that
Flocculant usage of the present invention is few, the sludge settling time is short, has very strong economic and practical；It can routinely protect for a long time
It deposits, to preservation condition no requirement (NR), there is very strong stability；Municipal administration, textile printing and dyeing, papermaking, chemical industry, petroleum can quickly be improved
The rate of settling of equal Industrial Waste Water Treatments factory sludge, has a wide range of application.The efficient quick separating of muddy water can be reached, improve water outlet water
The purpose of matter.
Claims (10)
1. a kind of nano flocculant and preparation method for sludge settling, it is characterised in that: by solid content be 20%, quality is divided
The dimethyl diene that number is 0.82% for 9.88% polydimethyl diallyl ammonium chloride, solid content 60%, mass fraction
The Fe that propyl ammonium chloride and mass fraction are 0.85% is formed, and density is 1.1-1.2, pH 1.80- at 20 DEG C of the flocculant
1.90, nano particle diameter is distributed between 60-100nm；
The preparation method of the nano flocculant the following steps are included:
Step 1, the preparation of nanometer polymerization iron chloride: by FeCl3·6H2O is sufficiently mixed in mass ratio for 1:10-14 with distilled water
Dissolution, is then slowly added to Na in whipping process2CO3Solid powder makes basicity 0.5-1.5, adds certain mass
Na2HPO4As stabilizer, under the conditions of revolving speed is 900rpm, after magnetic agitation 12-16h, it is placed in 4 DEG C of refrigerations and is aged 1-6 days,
In the polyaluminium ferrous solution ensured, poly-ferric chloride particle diameter distribution is between 30-60nm, and wherein the mass fraction of Fe is
1.4-1.8%；
Step 2, the preparation of nano flocculant: under the conditions of reaction temperature is 25-30 DEG C, by amount containing Fe obtained in step 1
Polydimethyl diallyl ammonium chloride that nanometer polymerization iron chloride for 1.4-1.8% is 20% with solid content, solid content are
60% dimethyl diallyl ammonium chloride is 32-38: 32-38: 1 mixing according to mass ratio, under the conditions of revolving speed is 900rpm,
Magnetic agitation 4-8h, obtaining partial size is 60-100nm nano flocculant.
2. nano flocculant described in claim 1 is used for activated sludge sedimentation experiment, it is characterised in that: resulting nanometer
300 times of dilution agent of flocculation was used for activated sludge sedimentation experiment, the 30s-5min before aeration terminates after the preparation same day and placement 45 days
Medicament is added, added amount of chemical is 5-50 μ L/L.
3. the preparation method of nanometer polymerization iron chloride according to claim 1, it is characterised in that: the mass fraction of the Fe
For 1.46-1.72%.
4. the preparation method of nanometer polymerization iron chloride according to claim 1, it is characterised in that: the basicity is 1.
5. the preparation method of nanometer polymerization iron chloride according to claim 1, it is characterised in that: the magnetic stirring apparatus
Revolving speed is 900rpm, and the magnetic agitation time is 15h.
6. the preparation method of nanometer polymerization iron chloride according to claim 1, it is characterised in that: the Aging Temperature is
4 DEG C, digestion time is 1-6 days.
7. the preparation method of flocculant according to claim 1, it is characterised in that the poly-ferric chloride and poly- diformazan
Base diallyl ammonium chloride, dimethyl diallyl ammonium chloride mass ratio be 35.87: 35.99: 1, reaction temperature 25-30
℃。
8. according to claim 2 be used for sludge settling experiment for flocculant, it is characterised in that: aeration time 2min.
9. according to claim 2 be used for sludge settling experiment for flocculant, it is characterised in that: flocculant dosage 20
μL/L。
10. flocculant according to claim 1, it is characterised in that: the flocculant is as water treatment agent in municipal administration, weaving
There is good application during the Industrial Waste Water Treatments such as printing and dyeing, chemical industry factory sludge settling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811040780.7A CN110357393B (en) | 2018-09-07 | 2018-09-07 | Nano flocculant for sludge sedimentation and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811040780.7A CN110357393B (en) | 2018-09-07 | 2018-09-07 | Nano flocculant for sludge sedimentation and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110357393A true CN110357393A (en) | 2019-10-22 |
| CN110357393B CN110357393B (en) | 2021-11-30 |
Family
ID=68214725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811040780.7A Active CN110357393B (en) | 2018-09-07 | 2018-09-07 | Nano flocculant for sludge sedimentation and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110357393B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533363A (en) * | 2020-04-03 | 2020-08-14 | 北京博泰至淳生物科技有限公司 | Sewage treatment method and system for realizing in-situ improvement of treatment scale |
| CN114835231A (en) * | 2022-06-30 | 2022-08-02 | 北京博泰至淳生物科技有限公司 | Nano flocculant for realizing in-situ energy expansion and preparation method thereof |
| CN116177707A (en) * | 2023-02-22 | 2023-05-30 | 深圳泓沛环境科技有限公司 | A kind of nano quick-sedimentation agent for accelerating sludge settlement, preparation method and application |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010038615A (en) * | 1999-10-26 | 2001-05-15 | 임정규 | Coagulant composition for water treatment and its use |
| CN1724404A (en) * | 2005-06-09 | 2006-01-25 | 山东大学 | Polymerized iron-dimethyl diallyl ammonium chloride homopolymer inorganic-organic composite flocculant and preparation method thereof |
| CN101628746A (en) * | 2009-08-26 | 2010-01-20 | 暨南大学 | Polymeric aluminum ferric chloride-polydimethyldiallylammonium chloride composite coagulant and preparation method thereof |
| CN102701387A (en) * | 2012-06-27 | 2012-10-03 | 山东大学 | Titanium tetrachloride-poly dimethyl diallyl ammonium chloride inorganic-organic compound flocculant and preparation method thereof |
| US20150183668A1 (en) * | 2012-06-06 | 2015-07-02 | Hymo Corporation | Flocculation treatment agent |
-
2018
- 2018-09-07 CN CN201811040780.7A patent/CN110357393B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010038615A (en) * | 1999-10-26 | 2001-05-15 | 임정규 | Coagulant composition for water treatment and its use |
| CN1724404A (en) * | 2005-06-09 | 2006-01-25 | 山东大学 | Polymerized iron-dimethyl diallyl ammonium chloride homopolymer inorganic-organic composite flocculant and preparation method thereof |
| CN101628746A (en) * | 2009-08-26 | 2010-01-20 | 暨南大学 | Polymeric aluminum ferric chloride-polydimethyldiallylammonium chloride composite coagulant and preparation method thereof |
| US20150183668A1 (en) * | 2012-06-06 | 2015-07-02 | Hymo Corporation | Flocculation treatment agent |
| CN102701387A (en) * | 2012-06-27 | 2012-10-03 | 山东大学 | Titanium tetrachloride-poly dimethyl diallyl ammonium chloride inorganic-organic compound flocculant and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533363A (en) * | 2020-04-03 | 2020-08-14 | 北京博泰至淳生物科技有限公司 | Sewage treatment method and system for realizing in-situ improvement of treatment scale |
| CN111533363B (en) * | 2020-04-03 | 2022-05-03 | 北京博泰至淳生物科技有限公司 | Sewage treatment method and system for realizing in-situ improvement of treatment scale |
| CN114835231A (en) * | 2022-06-30 | 2022-08-02 | 北京博泰至淳生物科技有限公司 | Nano flocculant for realizing in-situ energy expansion and preparation method thereof |
| CN116177707A (en) * | 2023-02-22 | 2023-05-30 | 深圳泓沛环境科技有限公司 | A kind of nano quick-sedimentation agent for accelerating sludge settlement, preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110357393B (en) | 2021-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gregory et al. | Hydrolyzing metal salts as coagulants | |
| CN106698548A (en) | High-efficient phosphate removing agent and preparation method thereof | |
| CN101456613B (en) | Composite powdery calcium sulphate sewage treating agent and preparation method thereof | |
| Saifuddin et al. | Pretreatment of palm oil mill effluent (POME) using magnetic chitosan | |
| CN105036269B (en) | A kind of multi-effect water treatment agent and its preparation method and water treatment method | |
| CN103265104A (en) | Nano powder-organic polymer composite flocculating agent | |
| Wang et al. | Pilot-scale fluoride-containing wastewater treatment by the ballasted flocculation process | |
| CN110357393A (en) | A kind of nano flocculant and preparation method for sludge settling | |
| CN102718295A (en) | Compound medicament for treating coking wastewater and preparation method thereof | |
| JP2005503922A (en) | Composition of substances and their use as flocculants and flocculants | |
| Choi | Effect of Mg-sericite flocculant for treatment of brewery wastewater | |
| CN111484115A (en) | Novel sewage phosphorus removal agent and preparation and application methods thereof | |
| CN107176661A (en) | A kind of preparation method and applications of poly- titanium aluminium chloride PAMC composite flocculation agent | |
| Chai et al. | A comparative study of abiological granular sludge (ABGS) formation in different processes for zinc removal from wastewater | |
| CN109942060A (en) | A kind of sewage treatment drug of mineral base flocks | |
| CN104150741A (en) | Sludge chemical conditioning method and conditioner | |
| CN108609671A (en) | Diatomite modified PSAF-CPAM composite flocculation agents and preparation method thereof | |
| CN109928475A (en) | A kind of composite water purifying agent and its preparation method and application | |
| Li et al. | Floc Kinetics in Dual-coagulation for the Treatment of High-concentration Surfactant-kaolin Wastewater | |
| CN105585112A (en) | Preparation method for aerobic granular sludge | |
| CN108622988A (en) | High synergistic non-molten composite dephosphorization flocculant and its application process altogether | |
| CN102897884A (en) | Composite flocculant as well as preparation method and application thereof on processing printing and dyeing wastewater | |
| CN109851013A (en) | A kind of method that PAC handles low temperature, low turbidity waste sewage | |
| CN116177707A (en) | A kind of nano quick-sedimentation agent for accelerating sludge settlement, preparation method and application | |
| KR20240116760A (en) | Method for removing dissolved organic substances in liquid using ultrafine adsorbent and means for carrying out the method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |