CN107857423A - A kind of processing system of reverse osmosis concentrated water - Google Patents

A kind of processing system of reverse osmosis concentrated water Download PDF

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Publication number
CN107857423A
CN107857423A CN201710798485.7A CN201710798485A CN107857423A CN 107857423 A CN107857423 A CN 107857423A CN 201710798485 A CN201710798485 A CN 201710798485A CN 107857423 A CN107857423 A CN 107857423A
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CN
China
Prior art keywords
water
reverse osmosis
fenton
concentrated water
osmosis concentrated
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Pending
Application number
CN201710798485.7A
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Chinese (zh)
Inventor
喻盛华
俞勇
方建
赵珺
柯海鹏
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Zhejiang Fuchun Ziguang Environmental Protection Co Ltd
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Zhejiang Fuchun Ziguang Environmental Protection Co Ltd
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Priority to CN201710798485.7A priority Critical patent/CN107857423A/en
Publication of CN107857423A publication Critical patent/CN107857423A/en
Pending legal-status Critical Current

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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
    • 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
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • 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
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • 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
    • 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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C02F1/766—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens by means of halogens other than chlorine or of halogenated compounds containing halogen other than chlorine
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant
    • C02F2305/026—Fenton's reagent
    • 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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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention discloses a kind of processing system of reverse osmosis concentrated water, the system includes：Denitrification filter pool, clear water reserviors, coagulative precipitation tank, Fenton reactor, Fenton sedimentation basin and break point chlorination pond.Reverse osmosis concentrated water lifts denitrification filter pool first, and denitrification denitrogenation is carried out to the nitrate nitrogen in concentrated water and nitrite nitrogen；Denitrification filter pool water outlet flows automatically to clear water reserviors, and clear water reserviors part effluent recycling to denitrification filter pool import mixes with reverse osmosis concentrated water water inlet；Clear water reserviors water outlet flows automatically to coagulative precipitation tank, and coagulating sedimentation is carried out to the insoluble organic matter in concentrated water, cenobium and colloid；Fenton reactor is arrived in coagulative precipitation tank water outlet lifting, and the hardly degraded organic substance in concentrated water is aoxidized；Fenton reactor water outlet flows automatically to Fenton sedimentation basin, carries out coagulating sedimentation；Fenton sedimentation basin water outlet flows automatically to break point chlorination pond, and qualified discharge after ammonia nitrogen removal and sterilization is carried out to concentrated water.

Description

A kind of processing system of reverse osmosis concentrated water
Technical field
The invention belongs to water treatment field, is related to a kind of processing system of reverse osmosis concentrated water.
Background technology
With the propulsion of national energy-saving emission reduction policy, the advanced treating of industrial wastewater increasingly obtains the attention of enterprise, The industrial trades such as steel, chemical industry, oil have substantial amounts of circulating sewage, chemical water station draining etc., and this kind of water is typically more clean, Water quality characteristicses are that organic matter and ammonia-nitrogen content are relatively low, and total dissolved solidss and chlorion are higher after circulation, with energy-saving and emission-reduction Requirement and industrial water saving water itself need, enterprise often take the technologies such as counter-infiltration, NF membrane to this kind of water carry out Desalination, reduce wastewater emission amount.
But after using counter-infiltration, the technology desalination such as NF membrane, a part of strong brine can be produced, the part strong brine due to Pollutant concentrates reason, and often composition is complex, and height is containing inorganic salts, organic matter, antisludging agent, the acid for also having desalination processes to use Deng minority specioz, the processing to strong brine is to restrict the important step of desalting technology development, especially in reverse osmosis concentrated water Nitrate nitrogen and organic matter, in the case of high salinity and chlorine ion, bioanalysis suffers from suppression, it is difficult to handle, it is domestic at present right In the usual disposal options of reverse osmosis concentrated water：Municipal sewage system is discharged into handle into sewage plant, spray thing in factory after pretreatment Expect consumption, evaporation pond natural evaporation, evaporative crystallization zero-emission disposal, but from the point of view of running situation, using these disposal options More or less all exist and produce secondary pollution, otherwise be exactly to invest that huge, operating cost is high, there is various in practice Limitation.
The content of the invention
, can be in high salt, high chlorine the technical problem to be solved in the present invention is to provide a kind of processing system of reverse osmosis concentrated water Under conditions of ion, the pollutants such as the organic matter in concentrated water, ammonia nitrogen and total nitrogen are effectively treated, accomplish qualified discharge and fortune Row cost is both economical.
The technical solution adopted by the present invention is：A kind of processing system of reverse osmosis concentrated water is provided, comprised the following steps：（1） Water outlet mixing of the reverse osmosis concentrated water first with clear water reserviors backflow, with salt acid for adjusting pH and basicity, adds appropriate carbon source and phosphorus source Afterwards, into one-level denitrification filter pool, under anoxic conditions, amphimicrobian denitrifying bacterium utilizes carbon source and phosphorus in reverse osmosis concentrated water Source, propagation and denitrification denitrogenation process are completed, nitrate nitrogen and anti-nitrate nitrogen are reduced into nitrogen；（2）Denitrification filter pool goes out Water flows automatically to clear water reserviors, and clear water reserviors are as denitrification filter pool backwash pond, while part effluent recycling is to denitrification filter pool import Mixed with reverse osmosis concentrated water；（3）Clear water reserviors water outlet flows automatically to coagulative precipitation tank, and coagulative precipitation tank adds polymer/metallic salt coagulant With macromolecule organic polymer, insoluble organic matter, cenobium and colloid are removed；（4）Coagulative precipitation tank water outlet lifting, which is arrived, is equipped with rubidium The Fenton reactor of boron magnet catalytic filler, Fenton reagent is added, be passed through electricity and air, hydroxyl radical free radical is produced, to difficult degradation Organic matter is aoxidized；（5）Fenton reactor water outlet flows automatically to Fenton sedimentation basin, is de-gassed, and adds alkali to adjust back pH, adds high score Sub- organic polymer, coagulating sedimentation is carried out to flco caused by Fenton oxidation；（6）Fenton sedimentation basin water outlet flows automatically to break point chlorination Pond, by chlorination, ammonia nitrogen removal and sterilization, the concentrated water qualified discharge after the completion of processing are carried out to water outlet.
Described step（1）In denitrification filter pool, be divided into two-stage denitrification filter pool, the control of one-level denitrification filter pool filtering velocity 3~4.5m/h, two level denitrification bio-filter filtering velocity are controlled in 6~9m/h, and using salt acid for adjusting pH and basicity, carbon source uses second Acid or sodium acetate, phosphorus source use sodium dihydrogen phosphate or potassium dihydrogen phosphate, and denitrification filter pool adds salt-durable microbe bacterium in advance Group's preparation, flora preparation living bacteria count >=3 × 1011CFU/mL, the ratio that adds are 0.05% that pond holds.
Described step（2）In clear water reserviors, the ratio of the water and raw water water that are back to denitrification filter pool import is 50%~200%.
Described step（3）In coagulative precipitation tank, the polymer/metallic salt coagulant added is aluminium polychloride, is added Macromolecule organic polymer is polyacrylamide.
Described step（4）In Fenton reactor, the Fenton reagent added is hydrogen peroxide and ferrous sulfate, Fenton's reaction The built-in rubidium boron magnet catalytic filler of device, is passed through electricity and air catalytic reaction, and the water inlet of Fenton reactor is adapted to pH≤6.5.
Described step（5）In Fenton sedimentation basin, provided with reaction tank and flocculation basin is continued, continue to be exposed in reaction tank Gas, residual Fenton reagent is continued to react, flocculation basin carries out adjusting pH and adds polyacrylamide coagulation.
Described step（6）In break point chlorination pond, the medicament of chlorination is sodium hypochlorite, is removed ammonia nitrogen and sterilization. Ammonia nitrogen concentration adds ratio range as 7 in the dosage and waste water of sodium hypochlorite:1~8.5:1.
Brief description of the drawings
Fig. 1 is a kind of processing system process chart of reverse osmosis concentrated water of the present invention.

Claims (8)

1. a kind of processing system of reverse osmosis concentrated water, its system is mainly by denitrification filter pool, clear water reserviors, coagulative precipitation tank, Fenton Reactor, Fenton sedimentation basin and break point chlorination pond are sequentially connected in series and formed, it is characterised in that including following processing step：（1）Reverse osmosis Water outlet mixing of the saturating concentrated water first with clear water reserviors backflow, with salt acid for adjusting pH and basicity, after adding appropriate carbon source and phosphorus source, enters Enter denitrification filter pool, under anoxic conditions, adhere to filtrate biomembrane on denitrifying bacterium utilize reverse osmosis concentrated water in carbon source and Phosphorus source, propagation and denitrification denitrogenation process are completed, nitrate nitrogen and anti-nitrate nitrogen are reduced into nitrogen；（2）Denitrification filter pool Water outlet flows automatically to clear water reserviors, and clear water reserviors have part effluent recycling to denitrification filter pool as denitrification filter pool backwash pond Import mixes with reverse osmosis concentrated water；（3）Clear water reserviors water outlet flows automatically to coagulative precipitation tank, and coagulative precipitation tank adds polymer/metallic salt and mixed Solidifying agent and macromolecule organic polymer, remove insoluble organic matter, cenobium and colloid；（4）Dress is arrived in coagulative precipitation tank water outlet lifting There is the Fenton reactor of catalytic filler, add Fenton reagent, be passed through electricity and air, produce hydroxyl radical free radical, it is organic to difficult degradation Thing is aoxidized；（5）Fenton reactor water outlet flows automatically to Fenton sedimentation basin, is de-gassed, and adds alkali to adjust back pH, and adding macromolecule has Machine polymer, coagulating sedimentation is carried out to flco caused by Fenton oxidation；（6）Fenton sedimentation basin water outlet flows automatically to break point chlorination pond, By chlorination, ammonia nitrogen removal and sterilization are carried out to water outlet, the water for handling completion up to standard is discharged.
2. the processing system of a kind of reverse osmosis concentrated water according to claim 1, it is characterised in that described uses the present invention Method processing reverse osmosis concentrated water, its water quality characteristic is：CODcr≤150mg/L,NH3-N≤30mg/L,TN≤230mg/L, TDS≤10000mg/L, Cl-≤6000mg/L。
3. the processing system of a kind of reverse osmosis concentrated water according to claim 1, it is characterised in that denitrification filter pool is divided into two Level denitrification filter pool, one-level denitrification filter pool filtering velocity control 3~4.5m/h, the control of two level denitrification bio-filter filtering velocity 6~ 9m/h, using salt acid for adjusting pH and basicity, carbon source uses acetic acid or sodium acetate, and phosphorus source uses sodium dihydrogen phosphate or di(2-ethylhexyl)phosphate Hydrogen potassium, denitrification filter pool add salt-durable microbe flora preparation, flora preparation living bacteria count >=3 × 10 in advance11CFU/mL, throw It is 0.05% that pond holds to add ratio.
4. the processing system of a kind of reverse osmosis concentrated water according to claim 1, it is characterised in that clear water reserviors are back to anti-nitre The ratio for changing the water before filter tank and raw water water is 50%~200%.
5. the processing system of a kind of reverse osmosis concentrated water according to claim 1, it is characterised in that what coagulative precipitation tank added Polymer/metallic salt coagulant is aluminium polychloride, and the macromolecule organic polymer added is polyacrylamide.
6. the processing system of a kind of reverse osmosis concentrated water according to claim 1, it is characterised in that what Fenton reactor added Fenton reagent is hydrogen peroxide and ferrous sulfate, and the built-in rubidium boron magnet catalytic filler of Fenton reactor, is passed through electricity and air catalytic is anti- Should, the water inlet of Fenton reactor is adapted to pH≤6.5.
7. the processing system of a kind of reverse osmosis concentrated water according to claim 1, it is characterised in that Fenton sedimentation basin is provided with de- Gas pond and flocculation basin, degassing are aerated in pond, and residual Fenton reagent is continued to react, and flocculation basin is carried out adjusting pH and added Polyacrylamide coagulation.
8. the processing system of a kind of reverse osmosis concentrated water according to claim 1, it is characterised in that break point chlorination pond chlorination Medicament is sodium hypochlorite, is removed ammonia nitrogen and sterilization, and ammonia nitrogen concentration adds ratio in the dosage and waste water of sodium hypochlorite Scope is 7:1~8.5:1.
CN201710798485.7A 2017-09-07 2017-09-07 A kind of processing system of reverse osmosis concentrated water Pending CN107857423A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109368919A (en) * 2018-11-09 2019-02-22 江苏南大华兴环保科技股份公司 A kind of pyridines purifying process of waste water
CN109516625A (en) * 2018-12-05 2019-03-26 北京环球中科水务科技有限公司 A kind of processing method of high salt organic waste water
CN110204084A (en) * 2019-05-08 2019-09-06 江苏物网慧农科技集团有限公司 A kind of processing method of Avermectin Wastewater
CN111747601A (en) * 2019-03-26 2020-10-09 中蓝连海设计研究院有限公司 Treatment method of PTA-containing wastewater RO concentrated water
CN112744949A (en) * 2020-12-15 2021-05-04 东江环保股份有限公司 Method for treating DTRO (digital terrestrial ro) concentrated water
CN114085001A (en) * 2021-11-16 2022-02-25 广东水清环保科技有限公司 Advanced treatment method for aquaculture wastewater
CN114149150A (en) * 2021-12-15 2022-03-08 知和环保科技有限公司 Process for stably treating nitrate in ultrafiltration and reverse osmosis concentrated water and application method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002004359A1 (en) * 2000-07-07 2002-01-17 Microbar, Inc. Method of treating industrial waste waters
CN103723779A (en) * 2012-10-16 2014-04-16 东丽先端材料研究开发（中国）有限公司 Fenton reaction system capable of controlling medicament feeding
CN104609658A (en) * 2015-01-14 2015-05-13 同济大学 Method for processing reverse osmosis concentrated water by catalyzed internal electrolysis and modified biological aerated filter
CN105439395A (en) * 2016-01-04 2016-03-30 大唐国际化工技术研究院有限公司 Zero-discharge treatment method of salt-containing organic wastewater

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002004359A1 (en) * 2000-07-07 2002-01-17 Microbar, Inc. Method of treating industrial waste waters
CN103723779A (en) * 2012-10-16 2014-04-16 东丽先端材料研究开发（中国）有限公司 Fenton reaction system capable of controlling medicament feeding
CN104609658A (en) * 2015-01-14 2015-05-13 同济大学 Method for processing reverse osmosis concentrated water by catalyzed internal electrolysis and modified biological aerated filter
CN105439395A (en) * 2016-01-04 2016-03-30 大唐国际化工技术研究院有限公司 Zero-discharge treatment method of salt-containing organic wastewater

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109368919A (en) * 2018-11-09 2019-02-22 江苏南大华兴环保科技股份公司 A kind of pyridines purifying process of waste water
CN109516625A (en) * 2018-12-05 2019-03-26 北京环球中科水务科技有限公司 A kind of processing method of high salt organic waste water
CN111747601A (en) * 2019-03-26 2020-10-09 中蓝连海设计研究院有限公司 Treatment method of PTA-containing wastewater RO concentrated water
CN110204084A (en) * 2019-05-08 2019-09-06 江苏物网慧农科技集团有限公司 A kind of processing method of Avermectin Wastewater
CN112744949A (en) * 2020-12-15 2021-05-04 东江环保股份有限公司 Method for treating DTRO (digital terrestrial ro) concentrated water
CN114085001A (en) * 2021-11-16 2022-02-25 广东水清环保科技有限公司 Advanced treatment method for aquaculture wastewater
CN114149150A (en) * 2021-12-15 2022-03-08 知和环保科技有限公司 Process for stably treating nitrate in ultrafiltration and reverse osmosis concentrated water and application method thereof

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