CN107840529A - A kind of efficient denitrification denitrogenation technique of brine waste - Google Patents
A kind of efficient denitrification denitrogenation technique of brine waste Download PDFInfo
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- CN107840529A CN107840529A CN201710798212.2A CN201710798212A CN107840529A CN 107840529 A CN107840529 A CN 107840529A CN 201710798212 A CN201710798212 A CN 201710798212A CN 107840529 A CN107840529 A CN 107840529A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of efficient denitrification denitrogenation technique of brine waste, the technique is sequentially connected in series and formed by intermediate pool, one-level denitrification filter pool, two level denitrification filter pool, clear water reserviors, brine waste adds acid for adjusting pH and basicity in intermediate pool, and add carbon source and phosphorus source, one-level denitrification is carried out into one-level denitrification filter pool, removes most of nitrate nitrogen and nitrite nitrogen in brine waste；The water outlet of one-level denitrification filter pool carries out two level denitrification after adjustment basicity and supplementary carbon source, into two level denitrification filter pool, further removes remaining nitrate nitrogen and nitrite nitrogen；The backwash water of one-level denitrification filter pool and two level denitrification filter pool returns to intermediate pool after coagulating sedimentation and handled again；The water part of clear water reserviors is back to intermediate pool；By the efficient denitrification process of one-level denitrification filter pool and two level denitrification filter pool, the efficient denitrification to brine waste is realized, the removal effect of NO3-N and NO2-N reaches more than 95%.
Description
Technical field
The invention belongs to water treatment field, it is related to a kind of efficient denitrification denitrogenation technique of high slat-containing wastewater.
Background technology
Often containing higher in industrial enterprise's waste discharges such as smelting iron and steel, electronic component, gunpowder making and chemical fertilizer production
The nitrate nitrogen and nitrite nitrogen of concentration.In recent years, with country energetically carry out energy-saving and emission-reduction policy, counter-infiltration, electrodialysis,
The various desalting technologies such as Electro Sorb are used widely in these industries, but various desalting technologies can all produce it is certain dense
Contracting waste water, this partial concentration waste water often have the characteristics of high salt, high chloride ion, high nitrate nitrogen and nitrite nitrogen, enterprise
It is more difficult to the processing of concentration denitrogenation of waste water.
Nitrate nitrogen and nitrite in processing waste water mainly have biological treatment, metal deoxidization, chemistry to urge at present
Change the technical methods such as reducing process, Fe-C Micro Electrolysis Method, wherein the most ripe and economical with biological treatment, other technologies method is equal
Or the shortcomings of technology is immature, removal efficiency is low, investment operating cost is too high, the less application in Practical Project be present.
Biological treatment mainly under anoxic conditions, denitrifying bacterium using the organic matter in carbon source as electron donor, with
Nitrate nitrogen and nitrite nitrogen are reduced into nitrogen by nitrate nitrogen and nitrite nitrogen as electron acceptor by denitrification
Gas, reach the purpose of denitrogenation.But in the waste water of high salt and high chloride ion, the activity of denitrifying bacterium can reduce, and show as micro-
The activity of biotransferase is suppressed, and causes denitrifying bacterium slow-growing, and denitrification effect declines.Therefore, in high salt and high chlorine
In ion waste water, the efficient removal of nitrate nitrogen and nitrite how is realized, reduces processing cost, there is an urgent need to ground
Study carefully.
The content of the invention
, can be to height the technical problem to be solved in the present invention is to provide a kind of efficient denitrification denitrogenation technique of brine waste
The waste water of salt high chloride ion carries out efficient denitrification denitrogenation, removes Coal Gas Washing Cycling Water nitrate nitrogen and nitrite nitrogen, realizes
Total nitrogen qualified discharge.
The technical solution adopted by the present invention is：A kind of efficient denitrification denitrogenation technique of brine waste is provided, including it is following
Step：
（1）Water outlet mixing of the brine waste first with clear water reserviors backflow, subsequently into intermediate pool, in intermediate pool regulation pH and
Basicity adds appropriate carbon source and phosphorus source to zone of reasonableness.（2）Intermediate pool water outlet enters one-level denitrification by elevator pump
Filter tank, under anoxic conditions, amphimicrobian denitrifying bacterium utilize the carbon source and phosphorus source in high slat-containing wastewater, complete one-level denitrification
Denitrification process, nitrate nitrogen and anti-nitrate nitrogen are reduced into nitrogen, produce basicity.（3）The water outlet of one-level denitrification filter pool is certainly
The distribution well of two level denitrification filter pool is flowed to, after distribution well adjusts pH and supplementary carbon source, into two level denitrification filter pool, is completed
The further denitrification denitrogenation of high slat-containing wastewater, remove nitrate nitrogen and anti-nitrate nitrogen.（4）The water outlet of two level denitrification filter pool is certainly
Flow to clear water reserviors, clear water reserviors part effluent recycling to intermediate pool, part water outlet is final as denitrification denitrogenation process system
Water outlet.（5）Gas and water and combined water and air backwash, backwash row are periodically carried out to one-level denitrification filter pool and two level denitrification filter pool
Water flows automatically to coagulative precipitation tank, and return to intermediate pool after coagulating sedimentation is handled again.
The brine waste of the described method processing using the present invention, its water quality characteristic are：TDS≤10000mg/L, Cl-
≤ 6000mg/L, ρ [NO3-N+NO2-N]≤200mg/L。
Described step（1）In intermediate pool online pH meter is installed, carry out acid adjustment, the saliferous adjusted in intermediate pool gives up
The pH of water is between 6.0 ~ 6.8, basicity≤100mg/L；Online nitrate nitrogen detector is installed, to intermediate pool supplementary carbon source and
Phosphorus source, carbon source use acetic acid or sodium acetate, and phosphorus source uses sodium dihydrogen phosphate or potassium dihydrogen phosphate.
Described step（2）And step（3）In one-level denitrification filter pool and two level denitrification filter pool use aeration and biological
Filter tank form, water distribution use filter plate and strainer head, and filtrate uses the spherical porous ceramsite filter material of lightweight；One-level denitrification filter pool
Filtering velocity control is controlled in 6 ~ 9m/h in 3 ~ 4.5m/h, two level denitrification filter pool filtering velocity.
Described step（2）And step（3）In one-level denitrification filter pool and two level denitrification filter pool, add salt tolerant in advance
Microorganism species preparation, flora preparation living bacteria count >=3 × 1011CFU/mL, the ratio that adds are 0.05% that pond holds.
Described step（4）In clear water reserviors, water part is back to intermediate pool, and backflow water yield is intake with intermediate pool
The reflux ratio of amount primarily serves nitrate nitrogen and nitrite nitrogen in dilution water inlet between 50% ~ 200%.
Described step（4）In one-level denitrification filter pool and two level denitrification filter pool, on blast pipe install pressure pass
Sensor, ultrasonic level gage is installed above filter tank, PLC control system is according to sequential set in advance and filter tank pressure, filter
Pit level feedback signal automatically controls the backwash operation in each filter tank, realizes the automatic precipitation position in filter tank, automatic air purge, air water joint
Wash and wash, its control parameter is：
（1）Air purge：12 ~ 20L/Sm of air purge intensity2, the time is 5 ~ 10min；
（2）Air water, which is combined, to be washed：12 ~ 20L/Sm of air purge intensity2, 3.5 ~ 5L/Sm of washing intensity2, the time is 3 ~ 8min；
（3）Washing：Wash 3.5 ~ 5L/Sm of intensity2, the time is 3 ~ 8min；
In brine waste ρ [NO3-N+NO2- N]≤200mg/L flow condition under, through present invention process method processing after, water outlet
ρ[NO3-N+NO2- N] concentration can be controlled in below 10mg/L.In addition to high slat-containing wastewater, efficiently denitrification disclosed by the invention takes off
Nitrogen technique, it is also applied for common city and has stable political situation the processing of industrial wastewater.The denitrifying bacterium that the present invention uses is salt-durable microbe flora
Preparation, culture and domestication time are shorter.
Brief description of the drawings
Fig. 1 is a kind of efficient denitrification denitrogenation process chart of brine waste of the present invention.
Claims (7)
1. a kind of efficient denitrification denitrogenation technique of brine waste, its handling process is mainly filtered by intermediate pool, one-level denitrification
Pond, two level denitrification filter pool, clear water reserviors, coagulative precipitation tank are sequentially connected in series and formed, it is characterised in that including following processing step：
（1）Water outlet mixing of the brine waste first with clear water reserviors backflow, subsequently into intermediate pool, pH and basicity are adjusted in intermediate pool
To zone of reasonableness, and add appropriate carbon source and phosphorus source；（2）Intermediate pool water outlet is filtered by elevator pump into one-level denitrification
Pond, under anoxic conditions, amphimicrobian denitrifying bacterium utilize the carbon source and phosphorus source in high slat-containing wastewater, complete denitrification denitrogenation mistake
Journey, nitrate nitrogen and anti-nitrate nitrogen are reduced into nitrogen；（3）The water outlet of one-level denitrification filter pool flows automatically to the filter of two level denitrification
The distribution well in pond, after pH and supplementary carbon source is adjusted in distribution well, into two level denitrification filter pool, complete entering for brine waste
One step denitrification denitrogenation, remove nitrate nitrogen and nitrite nitrogen；（4）Two level denitrification filter pool water outlet flows automatically to clear water reserviors, clearly
Pool portion effluent recycling is to intermediate pool, final outflow water of the part water outlet as denitrification denitrogenation process system；（5）It is periodically right
One-level denitrification filter pool and two level denitrification filter pool carry out gas and water and combined water and air backwash, backwash draining flow automatically to coagulation and sunk
Shallow lake pond, intermediate pool is returned to after coagulating sedimentation and is handled again.
2. the efficient denitrification denitrogenation technique of a kind of brine waste according to claim 1, it is characterised in that described adopts
The brine waste handled with the method for the present invention, its water quality characteristic are：TDS≤10000mg/L, Cl-≤ 6000mg/L, ρ [NO3-N
+NO2-N]≤200mg/L。
3. according to a kind of efficient denitrification denitrogenation technique of brine waste described in claim 1, it is characterised in that intermediate pool is pacified
Mounted in line pH meter, the acid adding regulating reservoir in intermediate pool front end adds hydrochloric acid, and the pH for adjusting the brine waste in intermediate pool exists
Between 6.0 ~ 6.8, basicity≤100mg/L；Online nitrate nitrogen detector is installed, to intermediate pool supplementary carbon source and phosphorus source, carbon
Source uses acetic acid or sodium acetate, and phosphorus source uses sodium dihydrogen phosphate or potassium dihydrogen phosphate.
4. according to a kind of efficient denitrification denitrogenation technique of brine waste described in claim 1, it is characterised in that one-level denitrification
Filter tank and two level denitrification filter pool use BAF form, and water distribution uses filter plate and strainer head, and filtrate uses lightweight
Spherical porous ceramic grain filter；The filtering velocity control of one-level denitrification bio-filter is in 3~4.5m/h, the filter of two level denitrification bio-filter
Speed control is in 6~9m/h.
5. according to a kind of efficient denitrification denitrogenation technique of brine waste described in claim 1, it is characterised in that one-level denitrification
Filter tank and two level denitrification filter pool add salt-durable microbe flora preparation, flora preparation living bacteria count >=3 × 10 in advance11CFU/
ML, the ratio that adds are 0.05% that pond holds.
6. according to a kind of efficient denitrification denitrogenation technique of brine waste described in claim 1, it is characterised in that one-level denitrification
Filter tank and two level denitrification filter pool install pressure sensor on blast pipe, and ultrasound filter liquid level gauge, PLC controls are installed above filter tank
System processed automatically controls the recoil for completing each filter tank according to sequential set in advance and filter tank pressure, filter tank liquid level feedback signal
Operation is washed, realizes the automatic precipitation position in filter tank, automatic air purge, air water, which are combined, to be washed and wash, and its control parameter is：（1）Air purge：Air purge
12~20L/Sm of intensity2, the time is 5~10min；
（2）Air water, which is combined, to be washed：12~20L/Sm of air purge intensity2, 3.5~5L/Sm of washing intensity2, the time is 3 ~ 8min；（3）
Washing：Wash 3.5~5L/Sm of intensity2, the time is 3~8min.
7. according to a kind of efficient denitrification denitrogenation technique of brine waste described in claim 1, it is characterised in that clear water reserviors go out
Water section is back to intermediate pool, and reflux ratio is 50%~200%.
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| CN201710798212.2A CN107840529A (en) | 2017-09-07 | 2017-09-07 | A kind of efficient denitrification denitrogenation technique of brine waste |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109320011A (en) * | 2018-10-22 | 2019-02-12 | 新疆环境工程技术有限责任公司 | Municipal wastewater handles integrated technique |
| CN110092469A (en) * | 2019-05-14 | 2019-08-06 | 清华大学 | A kind of organic liquid waste/high concentration nitrate waste liquid collaboration denitrogenation removes the diphasic anaerobic processing method and processing device of organic carbon |
| CN110683641A (en) * | 2019-09-02 | 2020-01-14 | 河北大学 | A sewage treatment system and method for strong denitrification |
| CN111003816A (en) * | 2019-12-31 | 2020-04-14 | 江苏南大华兴环保科技股份公司 | Biochemical tail water biological denitrification method for inhibiting non-filamentous bacterium expansion |
| CN114105294A (en) * | 2021-10-28 | 2022-03-01 | 苏州水星环保工业系统有限公司 | Construction and use method of high-salt high-ammonia nitrogen organic wastewater biological treatment system |
| CN117509902A (en) * | 2023-12-25 | 2024-02-06 | 知和环保科技有限公司 | A method for treating nitric acid pickling wastewater |
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| CN103864210A (en) * | 2012-12-12 | 2014-06-18 | 天津市庆烁环保工程有限公司 | New technology for treating eutrophic brackish water |
| CN106115916A (en) * | 2016-08-04 | 2016-11-16 | 安徽华骐环保科技股份有限公司 | One is put aerobic nitrification, two ends anoxic denitrification filter tank technique and device thereof |
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2017
- 2017-09-07 CN CN201710798212.2A patent/CN107840529A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103864210A (en) * | 2012-12-12 | 2014-06-18 | 天津市庆烁环保工程有限公司 | New technology for treating eutrophic brackish water |
| CN106115916A (en) * | 2016-08-04 | 2016-11-16 | 安徽华骐环保科技股份有限公司 | One is put aerobic nitrification, two ends anoxic denitrification filter tank technique and device thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109320011A (en) * | 2018-10-22 | 2019-02-12 | 新疆环境工程技术有限责任公司 | Municipal wastewater handles integrated technique |
| CN110092469A (en) * | 2019-05-14 | 2019-08-06 | 清华大学 | A kind of organic liquid waste/high concentration nitrate waste liquid collaboration denitrogenation removes the diphasic anaerobic processing method and processing device of organic carbon |
| CN110683641A (en) * | 2019-09-02 | 2020-01-14 | 河北大学 | A sewage treatment system and method for strong denitrification |
| CN110683641B (en) * | 2019-09-02 | 2021-12-14 | 河北大学 | A sewage treatment system and method for strong denitrification |
| CN111003816A (en) * | 2019-12-31 | 2020-04-14 | 江苏南大华兴环保科技股份公司 | Biochemical tail water biological denitrification method for inhibiting non-filamentous bacterium expansion |
| CN111003816B (en) * | 2019-12-31 | 2020-07-24 | 江苏南大华兴环保科技股份公司 | Biochemical tail water biological denitrification method for inhibiting non-filamentous bacterium expansion |
| CN114105294A (en) * | 2021-10-28 | 2022-03-01 | 苏州水星环保工业系统有限公司 | Construction and use method of high-salt high-ammonia nitrogen organic wastewater biological treatment system |
| CN114105294B (en) * | 2021-10-28 | 2023-09-22 | 苏州水星环保工业系统有限公司 | Construction and use method of high-salt high-ammonia-nitrogen organic wastewater biological treatment system |
| CN117509902A (en) * | 2023-12-25 | 2024-02-06 | 知和环保科技有限公司 | A method for treating nitric acid pickling wastewater |
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