CN106673309A - Chemical organic wastewater treatment method - Google Patents

Chemical organic wastewater treatment method Download PDF

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Publication number
CN106673309A
CN106673309A CN201611254270.0A CN201611254270A CN106673309A CN 106673309 A CN106673309 A CN 106673309A CN 201611254270 A CN201611254270 A CN 201611254270A CN 106673309 A CN106673309 A CN 106673309A
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CN
China
Prior art keywords
waste water
sedimentation tank
zinc powder
organic wastewater
reactor
Prior art date
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Pending
Application number
CN201611254270.0A
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Chinese (zh)
Inventor
龙炳清
匡茜熹
陈亚平
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Sichuan Normal University
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Sichuan Normal University
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Publication date
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Priority to CN201611254270.0A priority Critical patent/CN106673309A/en
Publication of CN106673309A publication Critical patent/CN106673309A/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
    • C02F1/66—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
    • C02F1/705—Reduction by metals
    • 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 provides a chemical organic wastewater treatment method. The method comprises steps of CO2 pressurization for reduction of zinc powder under ultrasonic action, anaerobic treatment, aerobic treatment, biofilter treatment and the like, and the treated wastewater can be stably discharged up to 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 voltage-resistant reactor, and cleaning zinc powder is added into reactor, and is passed through work Industry CO2Reacted.The granularity of zinc powder is less than 180 mesh, and every liter of waste water adds zinc powder 5g~30g.Under ul-trasonic irradiation, machinery The stirring reaction time is 10min~40min, and reaction temperature is 25 DEG C~60 DEG C, CO2Pressure be 0.1MPa~1.0MPa, often The power of cubic meter waste water input ultrasound wave is 2kW~8kW.Reacted waste water carries out solid-liquor separation, and the zinc powder isolated is returned Return reactor.Waste water lime cream or other alkaline matters after solid-liquor separation adjusts its pH value to 6.8~8.5, subsequently into 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 sedimentation tank.The supernatant of sedimentation tank send anaerobic reactor.Waste water stops 24h~120h, anaerobism temperature in anaerobic reactor Spend for 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.It is aerobic Waste water after process enters sedimentation tank, irregularly extracts sludge out from sedimentation tank and is filtered, and filter cake makees dangerous solid waste Dispose, filtrate 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 ceramic grain, it is 1.0m~2.0m per thickness degree, gross thickness is 2m~6m.The dominant bacteria of biological filtering tower combined working is in photosynthetic bacteria Rhodopseudomonas（Rhodopseudomonas）.The hydraulic load of biological filtering tower combined working is 30 m3/m2.d~90m3/m2.d.It is biological The standard water discharge discharge of filter tower or reuse.
The object of the present invention is achieved like this, and chemical industrial organic wastewater is entered after Zinc Powder Reduction device, big in waste water Molecular organic, particularly persistence organic pollutant（Containing phenyl ring and（Or）The Organic substance of heterocycle etc.）Produced by zinc powder reduction 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 zinc powder reduction（2.0~5.0）, the effect for being input into ultrasound wave is the mass transport process for accelerating reaction.It is useless after reduction Water lime cream or other alkaline matters adjust its pH value, to meet the requirement of follow-up anaerobic and aerobic process.It is premenstrual to state process Waste water in anaerobic processes, by the effect of microorganism, larger molecular organicses further become small organic molecule, are follow-up Biological oxidation creates more favorable condition.By biological oxidation process, remaining most of Organic substances are removed, while going to denitrogenate phosphorus Deng pollutant.Waste water finally enters activated carbon or porous ceramic grain biological filtering tower combined working, in the effect of microorganism, particularly rhodopseudomonas Under, the pollutant such as further organics removal and nitrogen phosphorus, it is ensured that the waste water stably reaching standard discharge after process.
Relative to existing method（Iron-carbon micro-electrolysis, metal powder reduction, Feenton methods etc.）, the present invention outstanding advantages be Using CO2Replace now widely used sulphuric acid to make acidulant, do not introduce SO4 2-Ion, essentially eliminates generation H2The material base of S Plinth（Part chemical industrial organic wastewater contains S）, so as to significantly reduce H2The pollution of S, while it also avoid SO4 2-To anaerobic and aerobic During microorganism inhibitory action, greatly improve the efficiency of biological treatment；Chemical plant all has boiler, what fuel combustion was produced CO2Waste gas can make full use of, and can not only reduce processing cost, and can reduce carbon emission；Waste water energy after process stably reaches Mark discharge, 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 zinc powder reductions（30min、25℃、CO2Pressure 0.6MPa, every cubic metre of waste water are input into ultrasound wave Power 2kW, every liter of waste water add zinc powder 25g）, anaerobism（PH8.5,72h, 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 49mg/L, T-N13.4mg/ L, T-P0.5mg/L, colourity 17.
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 zinc powder reductions（10min、40℃、CO2Pressure 0.1MPa, every cubic metre of waste water are defeated Enter ultrasonic power 4kW, every liter of waste water and add zinc powder 5g）, anaerobism（PH6.8,24h, 35 DEG C~55 DEG C）, it is aerobic（6h）And biology Filter tower（Active carbon filler layer gross thickness 2m, hydraulic load 90m3/m2.d）The COD of water outlet after processCrFor 53mg/L, T- N14.1mg/L, T-P0.5mg/L, colourity 19.

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 voltage-resistant reactor, and cleaning zinc powder is added into reactor, and is passed through work Industry CO2Reacted, the granularity of zinc powder is less than 180 mesh, and every liter of waste water adds zinc powder 5g~30g, under ul-trasonic irradiation, machinery The stirring reaction time is 10min~40min, and reaction temperature is 25 DEG C~60 DEG C, CO2Pressure be 0.1MPa~1.0MPa, often The power of cubic meter waste water input ultrasound wave is 2kW~8kW, and reacted waste water carries out solid-liquor separation, and the zinc powder isolated is returned Reactor is returned, the waste water lime cream or other alkaline matters after solid-liquor separation adjusts its pH value to 6.8~8.5, subsequently into 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 sedimentation tank, and the supernatant waste water of sedimentation tank send anaerobic reactor, waste water to stop 24h~120h, anaerobism in anaerobic reactor Temperature is 25 DEG C~55 DEG C, and the waste water after anaerobism is into the process of biology aerobic pond room temperature, and the Aerobic Process for Treatment time is 6h~16h, good Waste water after oxygen process enters sedimentation tank and precipitates 1h~3h, irregularly extracts sludge out from sedimentation tank and is filtered, and filter cake is endangered Dangerous disposition of solid waste, filtrate returns Aerobic Pond, and the supernatant waste water of sedimentation tank send multi-layer biological filter tower to process, biological filtering tower combined working Filler is activated carbon or porous ceramic grain, and filler gross thickness is 2m~6m, and the dominant bacteria of biological filtering tower combined working is red in photosynthetic bacteria Pseudomonass, the hydraulic load of biological filtering tower combined working is 30 m3/m2.d~90m3/m2.d, the standard water discharge of biological filtering tower combined working is discharged or returned With.
CN201611254270.0A 2016-12-30 2016-12-30 Chemical organic wastewater treatment method Pending CN106673309A (en)

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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 (8)

* Cited by examiner, † Cited by third party
Title
何晓文等: "《水体污染处理新技术及应用》", 31 March 2013, 中国科学技术大学出版社 *
宋志伟等: "《水污染控制工程》", 31 July 2013 *
张修正: "《化工厂电气手册》", 31 December 1994 *
徐根良: "《废水控制及治理工程》", 30 June 1999, 浙江大学出版社 *
施悦等: "《环境氧化还原处理技术原理与应用》", 31 August 2013 *
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 *
蒋克彬: "《污水处理工艺与应用》", 31 March 2014, 中国石化出版社 *
郑西来: "《地下水污染控制》", 31 July 2009 *

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Application publication date: 20170517