CN106673332A - Treatment method of chemical organic waste water - Google Patents

Treatment method of chemical organic waste water Download PDF

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Publication number
CN106673332A
CN106673332A CN201611255746.2A CN201611255746A CN106673332A CN 106673332 A CN106673332 A CN 106673332A CN 201611255746 A CN201611255746 A CN 201611255746A CN 106673332 A CN106673332 A CN 106673332A
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CN
China
Prior art keywords
waste water
sedimentation tank
tower
combined working
aerobic
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611255746.2A
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Chinese (zh)
Inventor
龙炳清
秦丹
曹攀
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Sichuan Normal University
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Sichuan Normal University
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Priority to CN201611255746.2A priority Critical patent/CN106673332A/en
Publication of CN106673332A publication Critical patent/CN106673332A/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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4676—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electroreduction
    • 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
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
    • 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
    • C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
    • C02F2003/003—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms using activated carbon or the like
    • 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
    • C02F2101/32—Hydrocarbons, e.g. oil
    • C02F2101/322—Volatile compounds, e.g. benzene
    • 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
    • C02F2301/04—Flow arrangements
    • C02F2301/046—Recirculation with an external loop
    • 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
    • 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
    • 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
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used

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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)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

The invention relates to a treatment method of chemical organic waste water. The method comprises the steps of CO2 pressurizing iron-carbon micro-electrolysis, anaerobic treatment, aerobic treatment, biofilter treatment and the like. The treated waste water can be discharged stably to reach the standard.

Description

The processing method of chemical industrial organic wastewater
Technical field
The present invention relates to a kind of processing method of chemical industrial organic wastewater.
Background technology
Organic chemical industry is one of mainstay of the national economy industry, the organic waste water pollutant COD concentration that its production is produced Height, complicated component particularly contains persistence organic pollutant（Containing phenyl ring and（Or）The Organic substance of heterocycle etc.）When, intractability Greatly.If the waste water is not processed is directly discharged into environment, severe contamination will be caused to environment.At present containing persistence organic pollutant The processing method of chemical industrial organic wastewater mainly first carries out advanced oxidation（Such as iron-carbon micro-electrolysis, metal powder reduction, Fenton methods Deng）Pretreatment, then carries out a biological disposal upon.In advanced oxidation preprocessing process, sulphuric acid is generally needed to be added, caused at subsequent bio Reason（Such as anaerobism, hydrolysis acidification）During produce H2S, produces more serious secondary pollution；Simultaneously because SO4 2-To microorganism Growth has obvious inhibitory action, affects biological treatment effect, waste water to be difficult to stably reaching standard discharge.Exploitation secondary pollution is little, energy The processing method of the chemical industrial organic wastewater of stably reaching standard discharge has larger practical value.
The content of the invention
For the problem of current chemical industrial organic wastewater processing method, the purpose of the present invention be find secondary pollution it is little, can be steady Determine the processing method of the chemical industrial organic wastewater of qualified discharge, it is characterised in that pH value is more than into 5.0, and after adjusted pond is adjusted Chemical industrial organic wastewater containing persistence organic pollutant sends into pressure Fe-C micro electrolysis（Also known as Inner electrolysis）Tower, and it is passed through industry CO2Carry out microelectrolysis processing.Ferrum in Fe-C micro electrolysis tower：The ratio of charcoal is 8：1~1：4.Waste water is in Fe-C micro electrolysis tower Time of staying 1.0h~3.0h.Reaction temperature is 25 DEG C~60 DEG C.CO2Pressure be 0.1MPa~1.0MPa.Microelectrolysis processing Waste water lime cream or other alkaline matters afterwards adjusts its pH value to 6.8~8.5, and subsequently into sedimentation tank 1h~3h is precipitated, Irregularly extract sludge out from sedimentation tank to be filtered, filter cake makees dangerous disposition of solid waste, filtrate returns sedimentation tank.Precipitation The supernatant waste water in pond send anaerobic reactor.Waste water stops 24h~120h in anaerobic reactor.Anaerobism temperature is 25 DEG C~55 DEG C. Into the process of biology aerobic pond room temperature, the Aerobic Process for Treatment time is 6h~16h to waste water after anaerobism.Waste water after Aerobic Process for Treatment is entered Sedimentation tank precipitates 1h~3h, irregularly extracts sludge out from sedimentation tank and is filtered, and filter cake makees dangerous disposition of solid waste, filter Liquid returns Aerobic Pond.The supernatant waste water of sedimentation tank send multi-layer biological filter tower to process.The filler of biological filtering tower combined working is activated carbon or porous Haydite, is 1.0m~2.0m per thickness degree, and gross thickness is 2m~6m.The dominant bacteria of biological filtering tower combined working is the red vacation in photosynthetic bacteria Zymomonas mobiliss（Rhodopseudomonas）.The hydraulic load of biological filtering tower combined working is 30 m3/m2.d~90m3/m2.d.Biological filtering tower combined working Standard water discharge is discharged or reuse.
The object of the present invention is achieved like this, and chemical industrial organic wastewater is entered after Fe-C micro electrolysis tower, in waste water Larger molecular organicses, particularly persistence organic pollutant（Containing phenyl ring and（Or）The Organic substance of heterocycle etc.）By Fe-C micro electrolysis Produce strong reduction free radical effect and destroy, be subsequent biochemical process create favorable conditions.It is passed through pressure CO2Purpose be Maintain the suitable pH value of Fe-C micro electrolysis（2.0~5.0）, the waste water lime cream or other alkaline matters tune after Fe-C micro electrolysis Its pH value is saved, to meet the requirement of follow-up anaerobic and aerobic process.The premenstrual waste water for stating process in anaerobic processes, by micro- life The effect of thing, larger molecular organicses further become small organic molecule, are that more favorable condition is created in subsequent bio oxidation.Pass through Biological oxidation process, remaining most of Organic substances are removed, while going to denitrogenate the pollutant such as phosphorus.Waste water finally enters activated carbon Or porous ceramic grain biological filtering tower combined working, in the presence of microorganism, particularly rhodopseudomonas, further organics removal and nitrogen phosphorus etc. Pollutant, it is ensured that the waste water stably reaching standard discharge after process.
Relative to existing method（Iron-carbon micro-electrolysis, metal powder reduction, composite metal powder reduction etc.）, the present invention protrusion it is excellent Point is to adopt CO2Replace now widely used sulphuric acid to make acidulant, do not introduce SO4 2-Ion, essentially eliminates generation H2The thing of S Matter basis（Part chemical industrial organic wastewater contains S）, so as to significantly reduce H2The pollution of S, while it also avoid SO4 2-To anaerobism and The inhibitory action of microorganism in aerobic process, greatly improves the efficiency of biological treatment；Chemical plant all has boiler, and fuel combustion is produced Raw CO2Waste gas can make full use of, and can not only reduce processing cost, and can reduce carbon emission；Waste water energy after process is steady Qualified discharge is determined, with obvious economic benefit and environmental benefit.
Specific implementation method
Embodiment 1：1m is processed daily3Chemical industrial organic wastewater（Composition：pH6.7、CODCr11400mg/L、T-N52.5 mg/L、T- P35.1mg/L, colourity 250）, Jing Fe-C micro electrolysis（3h、25℃、CO2Pressure 0.1MPa, ferrum：The ratio of charcoal is 8：1、）, anaerobism （PH8.3,72h, 25 DEG C~35 DEG C）, it is aerobic（12h）And biological filtering tower combined working（Porous ceramic grain packing layer gross thickness 4m, hydraulic load 35m3/m2.d）The COD of water outlet after processCrFor 57mg/L, T-N8.9mg/L, T-P0.2mg/L, colourity 15.
Embodiment 2：5m is processed daily3Synthesis pharmaceutical organic wastewater（Composition：pH5.7、CODCr6500 mg/L、T-N31.3 Mg/L, T-P23.2mg/L, colourity 300）, Jing Fe-C micro electrolysis（1h、40℃、CO2Pressure 0.3MPa, ferrum：The ratio of charcoal is 1： 4）, anaerobism（PH6.8,24h, 35 DEG C~55 DEG C）, it is aerobic（6h）And biological filtering tower combined working（Active carbon filler layer gross thickness 2m, waterpower are born Lotus 90m3/m2.d）The COD of water outlet after processCrFor 66mg/L, T-N9.2mg/L, T-P0.2mg/L, colourity 13.

Claims (1)

1. a kind of processing method of chemical industrial organic wastewater, it is characterised in that pH value is more than into 5.0, and after adjusted pond is adjusted Chemical industrial organic wastewater containing persistence organic pollutant sends into pressure Fe-C micro electrolysis tower, and is passed through industrial CO2Carry out light electrolysis Process, ferrum in Fe-C micro electrolysis tower：The ratio of charcoal is 8：1~1：4, time of staying 1.0h of the waste water in Fe-C micro electrolysis tower~ 3.0h, reaction temperature is 25 DEG C~60 DEG C, CO2Pressure be 0.1MPa~1.0MPa, the waste water Calx after microelectrolysis processing Breast or other alkaline matters adjust its pH value to 6.8~8.5,1h~3h are precipitated subsequently into sedimentation tank, irregularly from sedimentation tank Middle extraction sludge is filtered, and filter cake makees dangerous disposition of solid waste, and filtrate returns sedimentation tank, and the supernatant waste water of sedimentation tank send Anaerobic reactor, waste water stops 24h~120h in anaerobic reactor, and anaerobism temperature is 25 DEG C~55 DEG C, and the waste water after anaerobism enters Enter biology aerobic pond room temperature to process, the Aerobic Process for Treatment time is 6h~16h, the waste water after Aerobic Process for Treatment enter sedimentation tank precipitation 1h~ 3h, irregularly extracts sludge out from sedimentation tank and is filtered, and filter cake makees dangerous disposition of solid waste, and filtrate returns Aerobic Pond, The supernatant waste water of sedimentation tank send multi-layer biological filter tower to process, and the filler of biological filtering tower combined working is activated carbon or porous ceramic grain, filler total thickness Spend for 2m~6m, the dominant bacteria of biological filtering tower combined working is the rhodopseudomonas in photosynthetic bacteria, and the hydraulic load of biological filtering tower combined working is 30 m3/m2.d~90m3/m2.d, the standard water discharge discharge or reuse of biological filtering tower combined working.
CN201611255746.2A 2016-12-30 2016-12-30 Treatment method of chemical organic waste water Pending CN106673332A (en)

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CN106673332A true CN106673332A (en) 2017-05-17

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101665311A (en) * 2009-09-24 2010-03-10 中南大学 Catalysis and micro-electrolysis combined technology for high-concentration refractory organic wastewater

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101665311A (en) * 2009-09-24 2010-03-10 中南大学 Catalysis and micro-electrolysis combined technology for high-concentration refractory organic wastewater

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
湖南省爱国卫生运动委员会办公室等: "《爱国卫生运动工作手册》", 31 July 1986, 湖南人民出版社 *

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