CN107089767A - A kind of group technology of advanced treating laboratory sewage - Google Patents

A kind of group technology of advanced treating laboratory sewage Download PDF

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Publication number
CN107089767A
CN107089767A CN201710355353.7A CN201710355353A CN107089767A CN 107089767 A CN107089767 A CN 107089767A CN 201710355353 A CN201710355353 A CN 201710355353A CN 107089767 A CN107089767 A CN 107089767A
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China
Prior art keywords
ozone
sewage
ceramic
ceramic membrane
technology
Prior art date
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Pending
Application number
CN201710355353.7A
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Chinese (zh)
Inventor
赵正军
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Shanghai Jolly Energy-Saving Environmental Protection Technology Co Ltd
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Shanghai Jolly Energy-Saving Environmental Protection Technology Co Ltd
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Priority to CN201710355353.7A priority Critical patent/CN107089767A/en
Publication of CN107089767A publication Critical patent/CN107089767A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C02F1/28—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
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • 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
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • 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
    • 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
    • C02F2101/30—Organic compounds
    • 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
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • 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
    • 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
    • C02F2305/10—Photocatalysts
    • 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

Landscapes

  • 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)
  • Water Treatment By Sorption (AREA)

Abstract

A kind of group technology of advanced treating laboratory sewage combines water treatment technology there is provided a kind of ceramic super-filtering film.Present invention combination ozone ceramic membrane BAC process, effectively removes heavy metal and ammonia nitrogen in water removal, solves the hidden danger of pathogenic microorganism leakage.A kind of ceramic super-filtering film combination water treatment technology for the treatment of of laboratory sewage effluent, implementation steps are as follows：By Ag3PO4The 0.3wt% dispersion liquids of concentration about 0.1 are made, using the dispersion liquid as modification raw material, modification is coated to ceramic membrane surface using negative pressure leaching coating processes (" negative pressure leaching coating processes " technology has belonged to prior art in itself), then dried 2~4 hours at 200~300 DEG C, obtain the Ag being firmly combined with3PO4Modify ceramic membrane；Sewage first passes around peristaltic pump 1 and aoxidized into ozone contact tank 3, and the ozone contact tank residence time is 15 25min, and 1.5 4mg/L ozone is added by 2 ozone generators.Deng.

Description

A kind of group technology of advanced treating laboratory sewage
Technical field
The invention belongs to water treatment field, and in particular to a kind of ozone-ceramic membrane-biology for treatment of laboratory sewage Activated carbon combines water treatment technology.
Background technology
At present, the sewage of many laboratory discharges is directly discharged without any processing, domestic water and residence to people Firmly environment certainly will be polluted, and cause no small infringement.Because the composition of experiment wastewater is considerably complicated, contain more acid, alkali, cyanogen The poisonous and hazardous material such as compound, Cr VI, arsenide, phenol, benzene, conventional water treatment technology is to the huge sum of money in the sewage of laboratory Category, organic pollution and pathogenic microorganism removal effect be not good, thus be badly in need of exploiting economy, efficiently, it is energy-saving and environmental protection, applicable Laboratory sewage disposal technology.
In numerous water technologies, ceramic membrane is increasingly subject to pay attention to because of its excellent material property.Ceramic membrane filter pair Heavy metal, organic matter and microorganism have removal effect, and it not yet leads as a kind of emerging cutting edge technology in laboratory sewage disposal Domain popularization and application, related COMBINED PROCESS is also less.On the other hand, greatest problem of the ceramic membrane in is fouling membrane, Fouling membrane can influence the continuous service of ceramic membrane, limit the popularization and application of ceramic membrane process.Therefore, in order to increase at ceramic membrane The stability and persistence of reason, the present invention attempt to use ceramic membrane filter technology with other process combinations, mitigate fouling membrane, fill Divide and display one's respective advantages and act synergistically, applied to laboratory sewage treatment area.
The content of the invention
The technical problems to be solved by the invention are directed in existing conventional water treatment process to the weight in the sewage of laboratory The problem of metal, organic pollution and not good pathogenic microorganism removal effect, combines water process work there is provided a kind of ceramic super-filtering film Skill.Present invention combination ozone-ceramic membrane-BAC process, can effectively remove heavy metal and ammonia nitrogen in water removal, and solve cause of disease The hidden danger of microorganism leakage.
Technical solution of the present invention is：
A kind of ceramic super-filtering film combination water treatment technology for the treatment of of laboratory sewage effluent, it is characterised in that implementation steps It is as follows successively：
By Ag3PO4Concentration about 0.1-0.3wt% dispersion liquid is made, using the dispersion liquid as modification raw material, is taken out using negative pressure Filter coating processes (" negative pressure leaching coating processes " technology has belonged to prior art in itself) are coated modification to ceramic membrane surface, Then dried 2~4 hours at 200~300 DEG C, obtain the Ag being firmly combined with3PO4Modify ceramic membrane；
Sewage first passes around peristaltic pump 1 and aoxidized into ozone contact tank 3, and the ozone contact tank residence time is 15- 25min, 1.5-4mg/L ozone is added by 2- ozone generators.
Water after oxidation is driven into membrane cisterna 5 by peristaltic pump 4, is carried out by the form of the cross-flow filtration of ceramic film component 6 Filter.
Film water outlet, which enters, enters biologic grain activated carbon (BAC) filter post 8 after oxygen contact chamber 7, increase dissolved oxygen, by micro- Water outlet after biodegradable and charcoal absorption effect.
Group technology of the present invention has the following advantages that：
(1) ceramic membrane is incomparable with the organic polymer seperation film commonly used at present as a kind of inorganic separating film Some advantages：Chemical stability is good, mechanical strength is big, antimicrobial corrosive power is strong, pore-size distribution is narrow, separative efficiency is high.But Part heavy metal and microorganism that ceramic membrane is only leaned in the sewage of filtration retention experiments room, it is impossible to what degraded was wherein largely present Solubilised state organic pollution.Ag3PO4It is used as a kind of visible-light photocatalyst, under visible light illumination, Ag3PO4Semiconductor valence band On electronics be easy to be excited on conduction band, produce direct oxidation dirty organic pollutants in hole in valence band, and and OH- reaction generation OH in water body, there is good effect in terms of degradable organic pollutant.Therefore, Ag3PO4Modify ceramic membrane The oxidability of ceramic membrane can be increased, heavy metal, microorganism and the solubilised state of difficult degradation effectively removed in the sewage of laboratory has Organic pollutants.Its
(2) at present there is membrane pollution problem in ceramic membrane single-item handling technique, can influence ceramic membrane continuous service.And it is of the invention Ozonation technology is combined with ceramic membrane, the stability and persistence for the treatment of technology can be increased.Due to ozone have compared with High oxidability, thus it is possible to vary the structure of Organic substance in water, so as to further strengthen Ag3PO4Modify ceramic membrane removal organic Reduce fouling membrane while thing, and ceramic membrane is the characteristics of by chance have corrosion-resistant, resistance to oxidation, it is excellent that the ceramic membrane that can cooperate plays its Gesture, can avoid ozone and ceramic film device is destroyed, complementary effect is notable again.
(3) ozone-ceramics dual-membrane process is preferable to the organic matter removal effect such as particulate matter in water and UV absorptions, but nothing Method effectively removes dissolved organic matter, and relatively low to the removal effect of typical pollutant ammonia nitrogen in micro-polluted source water.Cause This needs to improve ozone-ceramics dual-membrane process, increases its removal effect to ammonia nitrogen and dissolved organic matter.The present invention is in pottery Increase after porcelain film water outletBioactivity carbon filtration post filtering technique, ceramic membrane can not be removed using the microbial action filtered in post Organic matter is further removed.Ceramic membrane delivery turbidity can be stably held in below 0.3NTU so that enter bioactivity The particle load reduction of carbon filtration post, this is conducive to the filter efficiency of increase filter post and increased the service life.Preposition ozone-ceramic membrane The content of pathogenic bacteria can be reduced while reducing growth of the algae on biological activated carbon, group technology has very high biological peace Quan Xing.In a word,Three complements each other, and forms organic whole, ozone-ceramic membrane-biological activated carbon group technologyIn water process In application have extensive prospect.
Brief description of the drawings
Fig. 1 is ozone-ceramic membrane-biological activated carbon group technology schematic diagram.
Multistage species composition figure in Fig. 2 biological activated carbons.
Embodiment
Embodiment
Influent turbidity 226NTU, ammonia nitrogen 4mg/L, COD 87mg/L, Cr (VI) 0.1mg/L are smelly by ozone contact tank Oxygen is aoxidized, and ozone concentration control is 2mg/L, and oxidization time is 20min.Water after oxidized enters membrane cisterna, passes through Ag3PO4 The form of modification ceramic membrane cross-flow filtration is filtered, and film water outlet enters seed activity after oxygen contact chamber increase dissolved oxygen Carbon filtration post.After the combined system, delivery turbidity clearance is stable more than 95%, and ammonia nitrogen removal frank is up to more than 90%, COD Clearance is more than 85%, and Pb (II) clearance reaches 90%.
Appropriate charcoal water mixed liquid is pipetted out of bioactivity charcoal post, its DNA is extracted after grinding and enters performing PCR amplification and sequencing point Analysis, to investigate the structure of community component of microorganism in post.As a result show that the pathogenic bacteria such as pseudomonas aeruginosa are not in pseudomonas Detection.In addition, staphylococcus aureus, salmonella, comma bacillus, hemolytic streptococcus, Shigella etc. are common causes The algae such as germ and cyanobacteria does not also detect.This explanation group technology can reduce ratio of the pathogenic bacteria in biological activated carbon Example, growth of the control algae on biological activated carbon, is conducive to security of increasing water quality.

Claims (2)

1. a kind for the treatment of of laboratory sewage effluent ceramic super-filtering film combination water treatment technology, it is characterised in that implementation steps according to It is secondary as follows：
Sewage first passes around peristaltic pump 1 and aoxidized into ozone contact tank 3, and the ozone contact tank residence time is 15-25min, 1.5-4mg/L ozone is added by 2- ozone generators；
Water after oxidation is driven into membrane cisterna 5 by peristaltic pump 4, is filtered by the form of the cross-flow filtration of ceramic film component 6；
Film water outlet, which enters, enters biologic grain activated carbon (BAC) filter post 8 after oxygen contact chamber 7, increase dissolved oxygen, by microorganism Water outlet after degraded and charcoal absorption effect.
2. the method as described in claim 1, it is characterised in that before sewage, is pre-processed to ceramic film component：By Ag3PO4 Concentration about 0.1-0.3wt% dispersion liquid is made, using the dispersion liquid as modification raw material, using negative pressure leaching coating processes to ceramics Film surface is coated modification, is then dried 2~4 hours at 200~300 DEG C, obtains the Ag being firmly combined with3PO4Modification ceramics Film.
CN201710355353.7A 2017-05-19 2017-05-19 A kind of group technology of advanced treating laboratory sewage Pending CN107089767A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108409061A (en) * 2018-05-10 2018-08-17 深圳市农博创新科技有限公司 Sea-farming water treatment system
CN113318608A (en) * 2021-05-17 2021-08-31 浙江理工大学 Dynamically catalyzed water treatment ceramic membrane and application thereof
CN113493273A (en) * 2020-03-19 2021-10-12 海加尔(厦门)科技有限公司 Breeding wastewater treatment process

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CN105084579A (en) * 2014-05-07 2015-11-25 杨佑堂 Exhaust type lab wastewater treatment equipment
CN205953776U (en) * 2016-08-10 2017-02-15 赵文龙 Integration laboratory wastewater treatment facility
CN106477824A (en) * 2016-11-28 2017-03-08 清华大学深圳研究生院 A kind of method and system for removing residual antibiotic in eliminating water

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JP2000042575A (en) * 1998-08-04 2000-02-15 Kurita Water Ind Ltd Treatment of water containing endocrine disrupters
CN1384150A (en) * 2002-04-29 2002-12-11 中国科学院上海硅酸盐研究所 Composite nano antiseptic titania/silica powder and its prepn
US20040245188A1 (en) * 2003-06-06 2004-12-09 Chowdhury Ajit K. Caustic solution treatment process
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CN105084579A (en) * 2014-05-07 2015-11-25 杨佑堂 Exhaust type lab wastewater treatment equipment
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CN106477824A (en) * 2016-11-28 2017-03-08 清华大学深圳研究生院 A kind of method and system for removing residual antibiotic in eliminating water

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108409061A (en) * 2018-05-10 2018-08-17 深圳市农博创新科技有限公司 Sea-farming water treatment system
CN113493273A (en) * 2020-03-19 2021-10-12 海加尔(厦门)科技有限公司 Breeding wastewater treatment process
CN113493273B (en) * 2020-03-19 2023-04-07 海加尔(厦门)科技有限公司 Breeding wastewater treatment process
CN113318608A (en) * 2021-05-17 2021-08-31 浙江理工大学 Dynamically catalyzed water treatment ceramic membrane and application thereof

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