CN112479282A - Efficient composite desulfurization wastewater treatment agent and preparation method thereof - Google Patents
Efficient composite desulfurization wastewater treatment agent and preparation method thereof Download PDFInfo
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- CN112479282A CN112479282A CN202011393993.5A CN202011393993A CN112479282A CN 112479282 A CN112479282 A CN 112479282A CN 202011393993 A CN202011393993 A CN 202011393993A CN 112479282 A CN112479282 A CN 112479282A
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 33
- 230000023556 desulfurization Effects 0.000 title claims abstract description 33
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000002131 composite material Substances 0.000 title description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 29
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical class O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004568 cement Substances 0.000 claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims abstract description 13
- 239000003814 drug Substances 0.000 claims description 26
- 239000000843 powder Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 229910021536 Zeolite Inorganic materials 0.000 claims description 13
- 239000010457 zeolite Substances 0.000 claims description 13
- 229940095672 calcium sulfate Drugs 0.000 claims description 12
- 230000004048 modification Effects 0.000 claims description 12
- 238000012986 modification Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- 239000000440 bentonite Substances 0.000 claims description 8
- 229910000278 bentonite Inorganic materials 0.000 claims description 8
- 239000002351 wastewater Substances 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 229920003169 water-soluble polymer Polymers 0.000 claims description 6
- 229910001385 heavy metal Inorganic materials 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000012266 salt solution Substances 0.000 claims description 4
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 3
- 244000060011 Cocos nucifera Species 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229940095564 anhydrous calcium sulfate Drugs 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000013535 sea water Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 2
- 239000005909 Kieselgur Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000036632 reaction speed Effects 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002734 clay mineral Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910001579 aluminosilicate mineral Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
Images
Classifications
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- 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
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
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- 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)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention provides an efficient compound desulfurization wastewater treatment agent and a preparation method thereof, wherein the desulfurization wastewater treatment agent comprises the following components: diatomite: 20-30 parts by mass of cement: 5-10 parts by mass of calcium sulfate: 30-50 parts by mass of activated carbon: 5-10 parts by mass of modified zeolite, 10-20 parts by mass of modified bentonite: 10-20 parts by mass. The efficient compound desulfurization wastewater treatment agent and the preparation method thereof have the advantages of good treatment effect, low treatment cost, low operation cost and simplicity in operation.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of preparation of medicaments in thermal power plants, in particular to a high-efficiency compound type desulfurization wastewater treatment medicament and a preparation method thereof.
[ background of the invention ]
The traditional three-header chemical precipitation process of the power plant has various chemical agents, complex process flow and unqualified effluent quality under most conditions.
After the release of the standard DL/T997-2006 in the power industry, a plurality of power plants adopt a 'triple box' dosing process, but few projects which can successfully and stably operate exist, and a plurality of devices are in a resting state. The reason is mainly as follows:
1, for polymeric flocculant, aluminum salt or ferric salt, the pH value of the wastewater has a large influence on the treatment effect, and the fluctuation of the pH value can seriously influence the reaction effect of the flocculant.
2, most of the medicaments added into the triple box are required to be diluted and dissolved, and are added by a metering pump. A plurality of premixing devices and dosing devices are needed to be added. And further greatly improves the operation cost, the equipment maintenance cost and the equipment energy consumption.
3, in the traditional treatment process, the reagent needs longer reaction time, but most of the three headers in the power plant are not designed to achieve the reaction time required by the traditional reagent. Resulting in effluent that fails to achieve the desired results.
4, the bed mud after traditional medicament is handled has very big viscidity, can influence the production operation of follow-up desliming equipment to sheet frame desliming equipment is taken as the example, and the mud cake of pressing futilely can't drop to the mud storehouse naturally, needs artifical assistance. And the dehydrated bottom mud contains a large amount of chemical agents and cannot be reused.
Therefore, there is a need for a compound desulfurization wastewater treatment agent and a preparation method thereof for thermal power plants to overcome the deficiencies of the prior art, so as to solve or alleviate one or more of the above problems.
[ summary of the invention ]
In view of the above, the invention provides an efficient compound desulfurization wastewater treatment agent and a preparation method thereof, and the efficient compound desulfurization wastewater treatment agent has the advantages of good treatment effect, low treatment cost, low operation cost and simplicity in operation.
In one aspect, the invention provides an efficient compound desulfurization wastewater treatment agent, which comprises:
diatomite: 20-30 parts by mass of a water-soluble polymer,
cement: 5-10 parts by mass of a stabilizer,
calcium sulfate: 30-50 parts by mass of a water-soluble polymer,
activated carbon: 5-10 parts by mass of a stabilizer,
10-20 parts by mass of modified zeolite,
modified bentonite: 10-20 parts by mass.
The above aspect and any possible implementation manner further provide an implementation manner, wherein the diatomite is seawater diatomite and is used for removing heavy metals from the desulfurization wastewater through adsorption.
The above aspects and any possible implementations further provide an implementation where the cement is a mixture of any one or two of portland cement and high alumina cement mixed in any proportion.
The above aspect and any possible implementation manner further provide an implementation manner, wherein the calcium sulfate is anhydrous calcium sulfate of 100 mesh to 200 mesh.
The above aspect and any possible implementation further provides an implementation, wherein the modified zeolite is formed from 1: soaking zeolite in NaCl in the solid-liquid ratio of 1mol/L for over 12 hr, washing the salt solution on the surface of zeolite, and stoving.
The above aspects and any possible implementations further provide an implementation in which the modified bentonite is an acid-modified bentonite.
The above aspects and any possible implementation manners further provide an implementation manner, wherein the activated carbon is coconut shell activated carbon with a particle size of more than 100 meshes and a water content of less than or equal to 10%.
The above aspects and any possible implementation manners further provide a preparation method of the efficient compound desulfurization wastewater treatment agent, and the preparation method comprises the following steps:
s1: carrying out powder modification on zeolite in medicament raw materials to obtain modified zeolite;
s2: performing powder modification on bentonite in a medicament raw material to obtain modified bentonite;
s3: sequentially adding cement and calcium sulfate into the modified zeolite according to respective proportions, and uniformly mixing to obtain a mixture A;
s4: sequentially adding diatomite and active carbon into the modified bentonite according to respective proportions, and uniformly mixing to obtain a mixture B;
s5: and uniformly mixing the mixture A and the mixture B to finally obtain the desulfurization wastewater treatment agent.
As for the above-mentioned aspect and any possible implementation manner, there is further provided an implementation manner, where the S3 specifically is: and sequentially adding the modified zeolite, the cement and the calcium sulfate into a powder stirrer, uniformly mixing and stirring for 1-2 hours.
As for the above-mentioned aspect and any possible implementation manner, there is further provided an implementation manner, where the S4 specifically is: sequentially adding the modified bentonite, the diatomite and the active carbon into a powder stirrer, uniformly mixing and stirring for 1-2 hours.
Compared with the prior art, the invention can obtain the following technical effects:
1: the invention uses a novel medicament to replace 4-5 medicaments in the original process, and has the advantages of high reaction speed, good treatment effect and greatly reduced medicament cost;
2: the novel medicament adopts a dry powder dosing device, and premixing equipment is not required, so that the cost of dosing equipment, the equipment maintenance cost and the operation cost are greatly reduced;
3: the reaction speed of the novel medicament and the waste water is far faster than that of the traditional medicament, so that the volume of reaction equipment can be greatly reduced, and the manufacturing cost and the occupied area of the equipment are reduced.
4: the novel medicament is composed of natural non-metallic substances, is non-toxic and harmless, so that the settled sludge can enter a gypsum storehouse after being dehydrated for resource utilization, and no heavy metal or other harmful substances overflow through detecting the leachate after the sludge acid leaching experiment, so that the sludge has no secondary pollution to the environment.
5: the inorganic material modification technology mainly takes acid solution and salt solution as modifiers, and the specific surface area and the adsorption capacity of the modified inorganic material are greatly enhanced.
Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a method for preparing a reagent for treating desulfurization waste water according to an embodiment of the present invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The invention provides a high-efficiency compound desulfurization wastewater treatment agent, which comprises the following components:
diatomite: 20-30 parts by mass of a water-soluble polymer,
cement: 5-10 parts by mass of a stabilizer,
calcium sulfate: 30-50 parts by mass of a water-soluble polymer,
activated carbon: 5-10 parts by mass of a stabilizer,
10-20 parts by mass of modified zeolite,
modified bentonite: 10-20 parts by mass.
The kieselguhr is seawater kieselguhr and is used for removing heavy metals in the desulfurization wastewater through adsorption, the cement is any one of Portland cement and high-alumina cement or a mixture mixed in any proportion, the calcium sulfate is anhydrous calcium sulfate of 100 meshes, and the modified zeolite is prepared from the following components in percentage by weight: fully soaking zeolite for more than 12 hours by using 1mol/L NaCl with the solid-liquid ratio of 20, cleaning a salt solution on the surface of the zeolite, and drying to obtain the modified bentonite, wherein the modified bentonite is acid modified bentonite, and the activated carbon is coconut shell activated carbon with the particle size of more than 100 meshes and the water content of less than or equal to 10%.
The invention also provides a preparation method of the efficient compound desulfurization wastewater treatment agent, a basic process flow diagram of the preparation method is shown in figure 1, and the preparation method comprises the following steps:
s1: carrying out powder modification on zeolite in medicament raw materials to obtain modified zeolite;
s2: performing powder modification on bentonite in a medicament raw material to obtain modified bentonite;
s3: sequentially adding cement and calcium sulfate into the modified zeolite according to respective proportions, and uniformly mixing to obtain a mixture A;
s4: sequentially adding diatomite and active carbon into the modified bentonite according to respective proportions, and uniformly mixing to obtain a mixture B;
s5: and uniformly mixing the mixture A and the mixture B to finally obtain the desulfurization wastewater treatment agent.
The S3 specifically includes: and sequentially adding the modified zeolite, the cement and the calcium sulfate into a powder stirrer, uniformly mixing and stirring for 1-2 hours.
The S4 specifically includes: sequentially adding the modified bentonite, the diatomite and the active carbon into a powder stirrer, uniformly mixing and stirring for 1-2 hours
The technical principle of powder modification in S3 and S4 in the invention is as follows:
the zeolite in the raw material of the medicament is subjected to powder modification, the zeolite is a general name of a porous water-containing aluminosilicate mineral with a frame structure, in the framework of the material, negative points on anion lattices and positive charge centers of balancing cations are not overlapped in space, so that large electrostatic attraction force is generated among molecules, a plurality of holes and channels with uniform sizes are formed in the material, and the holes are connected with each other through the channels, so that the material has a large specific surface area (400-800 square meters per gram) and good adsorption performance. The ion exchange capacity of the zeolite can be greatly improved by modifying the zeolite by a physical and chemical method, and the adsorption performance of the raw material modified by salt is improved by more than 15-20%.
The bentonite in the raw materials of the medicament is subjected to powder modification, the bentonite is hydrous clay mineral mainly containing montmorillonite, and has a layered crystal structure, cations among layers of the hydrous clay mineral are easy to exchange, and the bentonite has a large ion exchange capacity. After the bentonite is modified by acidification, the specific surface area of the material is increased, and impurities such as soluble substances, mixed organic matters and the like distributed in the pore canal of the material can be removed by adding acid, so that the pore canal of the material is dredged, and the diffusion of adsorbate molecules is facilitated, and meanwhile, because the radius of hydrogen atoms is smaller than the radius of atoms such as sodium ions, potassium ions, magnesium ions, calcium ions and the like, the hydrogen atoms with smaller volume ionized by the modified acid can replace various cations between bentonite layers, so that the pore volume is increased, the original interlayer bonding force is weakened, the layered crystal lattice is cracked, the pore canal is dredged, and the adsorption performance is improved by more than 40-50%.
After the desulfurization wastewater treatment agent prepared by the invention is put into use, the results are as follows:
1. after the novel medicament is used, the removal rate of suspended matters in the wastewater reaches over 99 percent, the removal rate of heavy metals reaches over 98 percent, and the removal rate of COD is over 40 percent;
2. the added medicaments of the system are changed from the original 5 medicaments to only one medicament;
3. the reaction speed of the medicament is improved by more than one time compared with the traditional 'triple-box' medicament.
4. The water quality of the desulfurization wastewater treated by the medicament completely reaches the DL/T997-2006 standard
The efficient compound desulfurization wastewater treatment agent and the preparation method thereof provided by the embodiment of the application are introduced in detail. The above description of the embodiments is only for the purpose of helping to understand the method of the present application and its core ideas; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
As used in the specification and claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the application as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (10)
1. The high-efficiency compound desulfurization wastewater treatment agent is characterized by comprising the following components in parts by weight:
diatomite: 20-30 parts by mass of a water-soluble polymer,
cement: 5-10 parts by mass of a stabilizer,
calcium sulfate: 30-50 parts by mass of a water-soluble polymer,
activated carbon: 5-10 parts by mass of a stabilizer,
10-20 parts by mass of modified zeolite,
modified bentonite: 10-20 parts by mass.
2. The desulfurization wastewater treatment chemical according to claim 1, wherein the diatomaceous earth is seawater diatomaceous earth, and is used for removing heavy metals from desulfurization wastewater by adsorption.
3. The desulfurization wastewater treatment agent according to claim 1, wherein the cement is a mixture of any one or two of portland cement and high-alumina cement mixed in any ratio.
4. The desulfurization wastewater treatment agent according to claim 1, wherein the calcium sulfate is anhydrous calcium sulfate of between 100 mesh and 200 mesh.
5. The desulfurization wastewater treatment agent according to claim 1, wherein the modified zeolite is composed of 1: soaking zeolite in NaCl in the solid-liquid ratio of 1mol/L for over 12 hr, washing the salt solution on the surface of zeolite, and stoving.
6. The desulfurization wastewater treatment chemical according to claim 1, wherein the modified bentonite is acid-modified bentonite.
7. The desulfurization wastewater treatment agent according to claim 1, wherein the activated carbon is coconut shell activated carbon with a particle size of 100 meshes or more and a water content of 10% or less.
8. A method for preparing a high-efficiency compound desulfurization wastewater treatment agent, which comprises the desulfurization wastewater treatment agent of any one of claims 1 to 7, and is characterized by comprising the following steps:
s1: carrying out powder modification on zeolite in medicament raw materials to obtain modified zeolite;
s2: performing powder modification on bentonite in a medicament raw material to obtain modified bentonite;
s3: sequentially adding cement and calcium sulfate into the modified zeolite, and uniformly mixing to obtain a mixture A;
s4: sequentially adding diatomite and active carbon into the modified bentonite, and uniformly mixing to obtain a mixture B;
s5: and uniformly mixing the mixture A and the mixture B to finally obtain the desulfurization wastewater treatment agent.
9. The preparation method according to claim 8, wherein the S3 is specifically: and sequentially adding the modified zeolite, the cement and the calcium sulfate into a powder stirrer, uniformly mixing and stirring for 1-2 hours.
10. The desulfurization wastewater treatment agent according to claim 1, wherein the S4 is specifically: sequentially adding the modified bentonite, the diatomite and the active carbon into a powder stirrer, uniformly mixing and stirring for 1-2 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011393993.5A CN112479282A (en) | 2020-12-02 | 2020-12-02 | Efficient composite desulfurization wastewater treatment agent and preparation method thereof |
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| CN202011393993.5A CN112479282A (en) | 2020-12-02 | 2020-12-02 | Efficient composite desulfurization wastewater treatment agent and preparation method thereof |
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| CN112479282A true CN112479282A (en) | 2021-03-12 |
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| CN116081771A (en) * | 2022-12-09 | 2023-05-09 | 大唐东北电力试验研究院有限公司 | An integrated desulfurization wastewater treatment agent and its preparation method |
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Application publication date: 20210312 |