CN106746248A - The processing method of chemical industrial organic wastewater - Google Patents

The processing method of chemical industrial organic wastewater Download PDF

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Publication number
CN106746248A
CN106746248A CN201611254829.XA CN201611254829A CN106746248A CN 106746248 A CN106746248 A CN 106746248A CN 201611254829 A CN201611254829 A CN 201611254829A CN 106746248 A CN106746248 A CN 106746248A
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China
Prior art keywords
waste water
sedimentation basin
composite powder
organic wastewater
chemical industrial
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Pending
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CN201611254829.XA
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Chinese (zh)
Inventor
龙炳清
喻沛杰
胡珊
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Sichuan Normal University
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Sichuan Normal University
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Priority to CN201611254829.XA priority Critical patent/CN106746248A/en
Publication of CN106746248A publication Critical patent/CN106746248A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/70Treatment of water, waste water, or sewage by reduction
    • C02F1/705Reduction by metals
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F2003/001Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F2003/001Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
    • C02F2003/003Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms using activated carbon or the like
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/36Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/04Flow arrangements
    • C02F2301/046Recirculation with an external loop
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/24Separation of coarse particles, e.g. by using sieves or screens
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological 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)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

The processing method of the chemical industrial organic wastewater that the present invention is introduced includes CO2The operations such as the reduction of pressurization ferrimanganic composite powder, anaerobism, the treatment of aerobic and biological filtering tower combined working, the waste water after treatment can stably reaching standard discharge.

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 matter 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.Contain persistence organic pollutant at present 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 biological treatment.In advanced oxidation preprocessing process, sulfuric 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, influences biological treatment effect, and waste water is difficult to stably reaching standard discharge.Exploitation secondary pollution is small, 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 small, can be steady Determine the processing method of the chemical industrial organic wastewater of qualified discharge, it is characterised in that after pH value is more than into 5.0, and the regulation of adjusted pond Chemical industrial organic wastewater feeding voltage-resistant reactor containing persistence organic pollutant, reactor is added by cleaning ferrimanganic composite powder, and It is passed through industrial CO2Reacted.The granularity of ferrimanganic composite powder is less than 180 mesh, and the content of each metal is not in ferrimanganic composite powder Less than 5%(The ferrimanganic composite powder that return is used is not limited).Every liter of waste water adds ferrimanganic composite powder 5g~30g, stirring reaction Time be 1h~3h, reaction temperature be 25 DEG C~60 DEG C, CO2Pressure be 0.1MPa~1.0MPa.Reacted waste water is carried out Solid-liquor separation, the ferrimanganic composite powder Returning reactor isolated.Waste water milk of lime or other alkaline matters after solid-liquor separation Its pH value to 6.8~8.5 is adjusted, 1h~3h is precipitated subsequently into sedimentation basin, irregularly extracting sludge out from sedimentation basin was carried out Filter, filter cake makees dangerous disposition of solid waste, and filtrate returns to sedimentation basin.The supernatant waste water of sedimentation basin send anaerobic reactor.Waste water 24h~120h is stopped in anaerobic reactor, anaerobism temperature is 25 DEG C~55 DEG C.Waste water after anaerobism enters biology aerobic pond normal temperature Treatment, the Aerobic Process for Treatment time is 6h~16h.Waste water after Aerobic Process for Treatment enters sedimentation basin and precipitates 1h~3h, irregularly from precipitation Extract sludge in pond out to be filtered, filter cake makees dangerous disposition of solid waste, filtrate returns to Aerobic Pond.The supernatant waste water of sedimentation basin Multi-layer biological filter tower is sent to process.The filler of biological filtering tower combined working is activated carbon or porous ceramic grain, is 1.0m~2.0m, total thickness per thickness degree It is 2m~6m to spend.The dominant bacteria of biological filtering tower combined working is the red pseudomonas in photosynthetic bacteria(Rhodopseudomonas).It is biological The hydraulic load of filter tower is 30 m3/m2.d~90m3/m2.d.The standard water discharge discharge or reuse of biological filtering tower combined working.
The object of the present invention is achieved like this, after chemical industrial organic wastewater enters ferrimanganic composite powder reduction reactor, waste water In larger molecular organicses, particularly persistence organic pollutant(Containing phenyl ring and(Or)The organic matter of heterocycle etc.)It is multiple by ferrimanganic Close the effect of the strong reduction free radical that powder reduction is produced and destroy, be that subsequent biochemical treatment creates favorable conditions.It is passed through pressure CO2 Purpose be to maintain ferrimanganic composite powder to reduce suitable pH value(2.0~5.0), waste water milk of lime or other alkalescence after reduction Material adjusts its pH value, to meet the requirement of follow-up anaerobic and aerobic process.Through the waste water of aforementioned processing in anaerobic processes, lead to The effect of microorganism is crossed, larger molecular organicses further become small organic molecule, be that more favourable bar is created in subsequent bio oxidation Part.Processed by biological oxidation, remaining most of organic matters are removed, while going to denitrogenate the pollutants such as phosphorus.Waste water is most laggard Enter activated carbon or porous ceramic grain biological filtering tower combined working, in the presence of microorganism, particularly red pseudomonas, further organics removal With the pollutant such as nitrogen phosphorus, it is ensured that the waste water stably reaching standard discharge after treatment.
Relative to existing method(Iron-carbon micro-electrolysis, metal powder reduction, Fenton methods etc.), outstanding advantages of the invention are to adopt Use CO2Make acidulant instead of now widely used sulfuric acid, do not introduce SO4 2-Ion, essentially eliminates generation H2The material base of S (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 mistake The inhibitory action of microorganism in journey, greatly improves 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 stabilization after treatment 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), reduced through ferrimanganic composite powder(1h、40℃、CO2Pressure 0.6MPa, every liter of waste water add ferrimanganic to answer Close 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 treatmentCrIt is 58mg/L, T-N14.2mg/L, T-P0.2mg/L, colourity 16.
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), reduced through ferrimanganic composite powder(3h、25℃、CO2Pressure 0.1MPa, every liter of waste water are added Ferrimanganic composite powder 5g), anaerobism(PH6.8,24h, 35 DEG C~55 DEG C), it is aerobic(6h)And biological filtering tower combined working(Active carbon filler layer total thickness Degree 2m, hydraulic load 90m3/m2.d)The COD of water outlet after treatmentCrIt is 44mg/L, T-N10.4mg/L, T-P0.3mg/L, colourity 13。

Claims (1)

1. a kind of processing method of chemical industrial organic wastewater, it is characterised in that after pH value is more than into 5.0, and the regulation of adjusted pond Chemical industrial organic wastewater feeding voltage-resistant reactor containing persistence organic pollutant, reactor is added by cleaning ferrimanganic composite powder, and It is passed through industrial CO2Reacted, the granularity of ferrimanganic composite powder is less than 180 mesh, the content of each metal is not in ferrimanganic composite powder Less than 5%, every liter of waste water adds ferrimanganic composite powder 5g~30g, and the stirring reaction time is 1h~3h, and reaction temperature is 25 DEG C~60 DEG C, CO2Pressure be 0.1MPa~1.0MPa, reacted waste water carries out solid-liquor separation, and the ferrimanganic composite powder isolated is returned Reactor, waste water milk of lime or other alkaline matters after solid-liquor separation adjust its pH value to 6.8~8.5, subsequently into heavy 1h~3h is precipitated in shallow lake pond, is irregularly extracted sludge out from sedimentation basin and is filtered, and filter cake makees dangerous disposition of solid waste, filtrate Sedimentation basin is returned to, the supernatant waste water of sedimentation basin send anaerobic reactor, waste water to stop 24h~120h, anaerobism temperature in anaerobic reactor It is 25 DEG C~55 DEG C to spend, and the waste water after anaerobism is into the treatment of biology aerobic pond normal temperature, and the Aerobic Process for Treatment time is 6h~16h, aerobic Waste water after treatment enters sedimentation basin and precipitates 1h~3h, irregularly extracts sludge out from sedimentation basin and is filtered, and filter cake is made dangerous Disposition of solid waste, filtrate returns to Aerobic Pond, the supernatant waste water of sedimentation basin send multi-layer biological filter tower to process, and biological filtering tower combined working is filled out Expect to be activated carbon or porous ceramic grain, filler gross thickness is 2m~6m, and the dominant bacteria of biological filtering tower combined working is the red vacation in photosynthetic bacteria Monad, 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.
CN201611254829.XA 2016-12-30 2016-12-30 The processing method of chemical industrial organic wastewater Pending CN106746248A (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 (5)

* Cited by examiner, † Cited by third party
Title
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 *
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 等编: "《爱国卫生运动工作手册》", 31 July 1986 *
郑西来: "《地下水污染控制》", 30 July 2009 *

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