CN106277590A - A kind of oxidoreduction microbial method processes the method for dangerous waste disposal comprehensive wastewater - Google Patents

A kind of oxidoreduction microbial method processes the method for dangerous waste disposal comprehensive wastewater Download PDF

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CN106277590A
CN106277590A CN201610727793.6A CN201610727793A CN106277590A CN 106277590 A CN106277590 A CN 106277590A CN 201610727793 A CN201610727793 A CN 201610727793A CN 106277590 A CN106277590 A CN 106277590A
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waste water
pond
oxidoreduction
flows
tank
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赵侣璇
张立宏
刘凯
宋晓薇
宋红军
曾广庆
徐荣乐
罗栋源
冯媛
覃楠钧
樊勇吉
刘文杰
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Scientific Research Academy of Guangxi Environmental Protection
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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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • 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
    • C02F1/50—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
    • 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
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • 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
    • C02F1/70—Treatment of water, waste water, or sewage by reduction
    • 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
    • C02F1/763—Devices for the addition of such compounds in gaseous form
    • 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
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/22—Chromium or chromium compounds, e.g. chromates
    • 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]
    • 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
    • C02F2209/14—NH3-N
    • 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
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic 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 Of Suspended Particles By Flocculating Agents (AREA)

Abstract

A kind of oxidoreduction microbial method processes the method for dangerous waste disposal comprehensive wastewater, comprises the following steps: (1) waste water imports regulating reservoir；(2), after preliminary sedimentation, waste water flows into flotation tank；(3) waste water flows into reduction reaction pond, adds ferrous sulfate and hydrochloric acid, and ferrous sulfate reacts with Cr VI；(4) waste water flows into neutralization pond, regulates pH, heavy metal and trivalent chromium and removes with sodium hydroxide generation hydroxide precipitation；(5) waste water enters flocculation sedimentation tank, adds aluminium polychlorid and polyacrylamide flocculant；(6) sedimentation tank overflow water enters intermediate pool, mixes with sanitary sewage, then flows into BAF；(7) after biochemical reaction, waste water enters collecting-tank, precipitates float, subsequently into sand filter, active carbon filter, finally flows into and observes pond；(8) disinfection in pond is observed.The method of the present invention carries out integrated treatment to waste water, and the every Testing index of effluent quality has all reached the limit value of sewage drainage standard.

Description

A kind of oxidoreduction-microbial method processes the method for dangerous waste disposal comprehensive wastewater
Technical field
The invention belongs to Environmental pollution and control technical field, particularly relate at a kind of oxidoreduction-microbial method The method of reason dangerous waste disposal comprehensive wastewater.
Background technology
Along with developing rapidly of China's industry, the yield of hazardous waste is also increasing day by day, in order to ensure public safety, Within 2004, Environmental Protection Department, National Development and Reform Committee have issued " about printing and distributing < whole nation dangerous waste and medical waste disposal facility construction Planning > notice " (environment-development [2004] 16), planning in the end of the year 2006, country utilize national debt build 31 by save in units of Dangerous waste disposal center.During hazardous waste is carried out materialization disposal and landfill, substantial amounts of waste water, Qi Zhonghan can be produced Having soda acid, heavy metal and the landfill percolate of high organic concentrations, place also can produce sanitary sewage simultaneously, and these waste water must Could must discharge or reuse after process is up to standard.
Therefore dangerous waste disposal center needs to build supporting sewage treatment plant, is used for processing in the useless disposal process of danger and produces Raw various types of sewage.
At present, the process technique document of dangerous waste disposal waste water is the rarest, and the method for the present invention is with certain solidification disposal of waste Center, processes various types of waste water of place by optimizing its operating condition, so that the water quality after Chu Liing reaches, " sewage is combined Close discharge standard " (GB 8978-1996) primary standard.
Summary of the invention
In order to reach wastewater discharge standard, with the waste water disposal facility at certain solid waste disposal center as object of study, right The link such as precipitate reduction in treatment facility and BAF is optimized, and draws the operational factor of its optimum, the present invention The method that a kind of oxidoreduction-microbial method processes dangerous waste disposal comprehensive wastewater is provided.
In order to realize foregoing invention purpose, the present invention by the following technical solutions:
A kind of oxidoreduction-microbial method processes the method for dangerous waste disposal comprehensive wastewater, comprises the following steps:
(1) early-stage rainwater, plant area produce waste water and import regulating reservoir；
(2), after regulating reservoir preliminary sedimentation, waste water flows into flotation tank；
(3) then flowing into reduction reaction pond, add ferrous sulfate and hydrochloric acid, ferrous sulfate reacts with Cr VI, by chromium also Former one-tenth trivalent chromium；
(4) waste water flows into neutralization pond, adds sodium hydroxide regulation pH raw with sodium hydroxide to neutrality, heavy metal and trivalent chromium Hydrate precipitation is removed；
(5) waste water enters flocculation sedimentation tank, adds aluminium polychlorid and polyacrylamide flocculant, accelerates heavy metal hydrogen-oxygen Compound and the sedimentation of particle；
(6) sedimentation tank overflow water enters intermediate pool, mixes with sanitary sewage, then flows into two aeration and biologicals of series connection Filter tank, removes COD and ammonia nitrogen；
(7) after biochemical reaction, waste water enters collecting-tank, precipitates a part of float, subsequently into sand filter, activated carbon mistake Filter, removes oil removal and various pollutant further, finally flows into and observe pond；
(8) it is passed through disinfection by chlorine dioxide sterilization in observing pond, reaches discharge standard, outer row or reuse.
As preferably, in step (3), ferrous sulfate is 16-20:1 with the mass ratio of Cr VI thing.
As preferably, the gas-water ratio of the BAF described in step (6) is 2-6:1.
As preferably, the water conservancy time of staying of described method is 1-3h.
Compared with prior art, there is advantages that
(1) method of the present invention carries out integrated treatment to waste water, and the every Testing index of effluent quality has all reached sewage The limit value of discharge standard, detected value is greatly reduced.
(2) method of the present invention is with the waste water disposal facility at certain solid waste disposal center as object of study, to process The link such as precipitate reduction in facility and BAF is optimized, and draws the operational factor of its optimum, for solid waste The application disposing center processing waste water provides reference.
Accompanying drawing explanation
Fig. 1 be the oxidoreduction-microbial method of the present invention process dangerous waste disposal comprehensive wastewater process chart.
Detailed description of the invention
Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.Without departing substantially from present invention spirit In the case of essence, the amendment that the inventive method, step or condition are made or replacement, belong to the scope of the present invention.
Fig. 1 is shown in the technological process using oxidoreduction-microbial method to process PROCESS FOR TREATMENT comprehensive wastewater.Produce waste water first Enter regulating reservoir, equalize waste water quality, the water yield, it is ensured that the stable operation of subsequent treatment, subsequent discharge into flotation tank, remove in waste water Most of oils and float.Flotation tank water outlet enters oxidoreduction pond, adds ferrous sulfate wherein and Fe occurs2+And Cr6+ Redox reaction, for ensureing being smoothed out of reaction, also need to add hydrochloric acid and reduce the pH value of former water, make pH value be maintained at suitable In the range of conjunction reacts.Waste water enters neutralization reaction tank after oxidization-reduction processes and is neutralized reaction, adds NaOH Improve pH value of waste water, make Cr3+、Pb2+、Zn2+、Ni2+、Cu2+Etc. heavy metal ion and OH-Reaction precipitation.Sedimentation tank supernatant flows into Flocculation basin, enters inclined-plate clarifying basin precipitation, removes the small granular suspended matters of waste water after adding PAC Yu PAM and stirring.Swash plate Enter intermediate pool together with sedimentation tank supernatant sanitary sewage after processing through anaerobic tank, after mixing, pump into microbial treatments dress Put.Microbial treatments use " DC BAF+N BAF " technique, remove the dirt in composite waste further Dye thing, after filter through sand filtration and activated carbon, add disinfection by chlorine dioxide reuse, process the waste water not up to required the most again It is back to regulating reservoir process.The scum silica frost of flotation tank is transported to center incineration plants burning disposal, and redox reaction pond, neutralization are instead Certainly enter storage basin, sand filter and active carbon filter backwashing water also enters storage basin to the mud of Ying Chi and inclined-plate clarifying basin. Storage basin sludge pump, to sludge concentration tank, carries out postponing landfill at solidification in solidification workshop after filter press is dehydrated.
In embodiment 1-3, subjects is the waste water of ALONG GUANGXI COAST dangerous waste disposal center, its Main Ingredients and Appearance such as table 1。
Certain hazardous waste processing center waste water quality of table 1
Embodiment 1:
A kind of oxidoreduction-microbial method processes the method for dangerous waste disposal comprehensive wastewater, comprises the following steps:
(1) early-stage rainwater, plant area produce waste water and import regulating reservoir；
(2) after regulating reservoir preliminary sedimentation, sewage flows into flotation tank, removes the float of particulate；
(3) then flowing into reduction reaction pond, add ferrous sulfate and hydrochloric acid, ferrous sulfate reacts with Cr VI, by chromium also Former one-tenth trivalent chromium；Ferrous sulfate is 16:1 with the mass ratio of Cr VI thing；
(4) waste water flows into neutralization pond, adds sodium hydroxide regulation pH to neutral, heavy metal (copper, lead, zinc, cadmium, nickel etc.) and Trivalent chromium and sodium hydroxide generate hydroxide precipitation and remove；
(5) waste water enters flocculation sedimentation tank, adds aluminium polychlorid and polyacrylamide flocculant, accelerates heavy metal hydrogen-oxygen Compound and the sedimentation of some particles；
(6) sedimentation tank overflow water enters intermediate pool, mixes with sanitary sewage, then flows into two aeration and biologicals of series connection Filter tank, removes COD and ammonia nitrogen；The gas-water ratio of described BAF is 2:1；
(7) after biochemical reaction, waste water enters collecting-tank, precipitates a part of float, subsequently into sand filter, activated carbon mistake Filter, removes oil removal and various pollutant further, finally flows into and observe pond；
(8) it is passed through disinfection by chlorine dioxide sterilization in observing pond, reaches discharge standard, outer row or reuse.
In technical scheme, the water conservancy time of staying of described method is 1h.
Embodiment 2:
A kind of oxidoreduction-microbial method processes the method for dangerous waste disposal comprehensive wastewater, comprises the following steps:
(1) early-stage rainwater, plant area produce waste water and import regulating reservoir；
(2) after regulating reservoir preliminary sedimentation, sewage flows into flotation tank, removes the float of particulate；
(3) then flowing into reduction reaction pond, add ferrous sulfate and hydrochloric acid, ferrous sulfate reacts with Cr VI, by chromium also Former one-tenth trivalent chromium；Ferrous sulfate is 20:1 with the mass ratio of Cr VI thing；
(4) waste water flows into neutralization pond, adds sodium hydroxide regulation pH to neutral, heavy metal (copper, lead, zinc, cadmium, nickel etc.) and Trivalent chromium and sodium hydroxide generate hydroxide precipitation and remove；
(5) waste water enters flocculation sedimentation tank, adds aluminium polychlorid and polyacrylamide flocculant, accelerates heavy metal hydrogen-oxygen Compound and the sedimentation of some particles；
(6) sedimentation tank overflow water enters intermediate pool, mixes with sanitary sewage, then flows into two aeration and biologicals of series connection Filter tank, removes COD and ammonia nitrogen；The gas-water ratio of described BAF is 6；
(7) after biochemical reaction, waste water enters collecting-tank, precipitates a part of float, subsequently into sand filter, activated carbon mistake Filter, removes oil removal and various pollutant further, finally flows into and observe pond；
(8) it is passed through disinfection by chlorine dioxide sterilization in observing pond, reaches discharge standard, outer row or reuse.
In technical scheme, the water conservancy time of staying of described method is 3h.
Embodiment 3:
A kind of oxidoreduction-microbial method processes the method for dangerous waste disposal comprehensive wastewater, comprises the following steps:
(1) early-stage rainwater, plant area produce waste water and import regulating reservoir；
(2) after regulating reservoir preliminary sedimentation, sewage flows into flotation tank, removes the float of particulate；
(3) then flowing into reduction reaction pond, add ferrous sulfate and hydrochloric acid, ferrous sulfate reacts with Cr VI, by chromium also Former one-tenth trivalent chromium；Ferrous sulfate is 18:1 with the mass ratio of Cr VI thing；
(4) waste water flows into neutralization pond, adds sodium hydroxide regulation pH to neutral, heavy metal (copper, lead, zinc, cadmium, nickel etc.) and Trivalent chromium and sodium hydroxide generate hydroxide precipitation and remove；
(5) waste water enters flocculation sedimentation tank, adds aluminium polychlorid and polyacrylamide flocculant, accelerates heavy metal hydrogen-oxygen Compound and the sedimentation of some particles；
(6) sedimentation tank overflow water enters intermediate pool, mixes with sanitary sewage, then flows into two aeration and biologicals of series connection Filter tank, removes COD and ammonia nitrogen；The gas-water ratio of described BAF is 4；
(7) after biochemical reaction, waste water enters collecting-tank, precipitates a part of float, subsequently into sand filter, activated carbon mistake Filter, removes oil removal and various pollutant further, finally flows into and observe pond；
(8) it is passed through disinfection by chlorine dioxide sterilization in observing pond, reaches discharge standard, outer row or reuse.
In technical scheme, the water conservancy time of staying of described method is 2h.
The water quality of the water outlet after processing method in embodiment 1-3 detects, and result is as shown in table 2.
The oxidoreduction of table 2 present invention-microbial method processes the water quality after the method process of waste water
As shown in Table 2, produce waste water and process the method process of waste water at the oxidoreduction-microbial method through the present invention After, the every Testing index of water quality of water outlet has all reached the limit value of sewage drainage standard.

Claims (4)

1. the method that oxidoreduction-microbial method processes dangerous waste disposal comprehensive wastewater, it is characterised in that include following Step:
(1) early-stage rainwater, plant area produce waste water and import regulating reservoir；
(2), after regulating reservoir preliminary sedimentation, waste water flows into flotation tank；
(3) then flowing into reduction reaction pond, add ferrous sulfate and hydrochloric acid, ferrous sulfate reacts with Cr VI, is reduced into by chromium Trivalent chromium；
(4) waste water flows into neutralization pond, adds sodium hydroxide regulation pH and generates hydrogen to neutrality, heavy metal and trivalent chromium with sodium hydroxide Oxide precipitation is removed；
(5) waste water enters flocculation sedimentation tank, adds aluminium polychlorid and polyacrylamide flocculant, accelerates heavy metal hydroxide Sedimentation with particle；
(6) sedimentation tank overflow water enters intermediate pool, mixes with sanitary sewage, then flows into two aeration and biological filters of series connection Pond, removes COD and ammonia nitrogen；
(7) after biochemical reaction, waste water enters collecting-tank, precipitates a part of float, subsequently into sand filter, and active carbon filter, Remove oil removal and various pollutant further, finally flow into and observe pond；
(8) it is passed through disinfection by chlorine dioxide sterilization in observing pond, reaches discharge standard, outer row or reuse.
Oxidoreduction the most according to claim 1-microbial method processes the method for dangerous waste disposal comprehensive wastewater, and it is special Levying and be, in step (3), ferrous sulfate is 16-20:1 with the mass ratio of Cr VI thing.
Oxidoreduction the most according to claim 1-microbial method processes the method for dangerous waste disposal comprehensive wastewater, and it is special Levying and be, the gas-water ratio of the BAF described in step (6) is 2-6:1.
Oxidoreduction the most according to claim 1-microbial method processes the method for dangerous waste disposal comprehensive wastewater, and it is special Levying and be, the water conservancy time of staying of described method is 1-3h.
CN201610727793.6A 2016-08-25 2016-08-25 A kind of oxidoreduction microbial method processes the method for dangerous waste disposal comprehensive wastewater Pending CN106277590A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107185492A (en) * 2017-06-27 2017-09-22 江苏长龙国际贸易有限公司 A kind of method of adsorption treatment low-concentration chromate waste water
CN107572732A (en) * 2017-10-26 2018-01-12 中节能清洁技术发展有限公司 Sewage disposal system for dangerous waste disposal factory
CN107963785A (en) * 2017-12-11 2018-04-27 广州中科建禹环保有限公司 A kind of assembled highly-effective waste water integral treatment method and equipment
CN109081518A (en) * 2018-09-13 2018-12-25 西安航空学院 A kind of hexavalent chromium polluted method in processing water
CN109761446A (en) * 2019-03-08 2019-05-17 东华工程科技股份有限公司 A kind of processing system and method for dangerous waste disposition center comprehensive wastewater
CN112110563A (en) * 2020-08-17 2020-12-22 江苏开放大学（江苏城市职业学院） Method for treating sewage and sludge generated in chrome tanning
CN114275934A (en) * 2021-12-28 2022-04-05 山西青舟环境科技有限公司 Leachate pretreatment method

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107185492A (en) * 2017-06-27 2017-09-22 江苏长龙国际贸易有限公司 A kind of method of adsorption treatment low-concentration chromate waste water
CN107572732A (en) * 2017-10-26 2018-01-12 中节能清洁技术发展有限公司 Sewage disposal system for dangerous waste disposal factory
CN107963785A (en) * 2017-12-11 2018-04-27 广州中科建禹环保有限公司 A kind of assembled highly-effective waste water integral treatment method and equipment
CN109081518A (en) * 2018-09-13 2018-12-25 西安航空学院 A kind of hexavalent chromium polluted method in processing water
CN109761446A (en) * 2019-03-08 2019-05-17 东华工程科技股份有限公司 A kind of processing system and method for dangerous waste disposition center comprehensive wastewater
CN112110563A (en) * 2020-08-17 2020-12-22 江苏开放大学（江苏城市职业学院） Method for treating sewage and sludge generated in chrome tanning
CN112110563B (en) * 2020-08-17 2023-07-25 江苏开放大学（江苏城市职业学院） Method for treating sewage and sludge from chrome tanning
CN114275934A (en) * 2021-12-28 2022-04-05 山西青舟环境科技有限公司 Leachate pretreatment method

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Application publication date: 20170104