CN106746271A - The processing method of Coal Tar Wastewater - Google Patents

The processing method of Coal Tar Wastewater Download PDF

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Publication number
CN106746271A
CN106746271A CN201611255745.8A CN201611255745A CN106746271A CN 106746271 A CN106746271 A CN 106746271A CN 201611255745 A CN201611255745 A CN 201611255745A CN 106746271 A CN106746271 A CN 106746271A
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CN
China
Prior art keywords
waste water
sedimentation basin
composite powder
zinc composite
aluminium zinc
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Pending
Application number
CN201611255745.8A
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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 CN201611255745.8A priority Critical patent/CN106746271A/en
Publication of CN106746271A publication Critical patent/CN106746271A/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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • 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
    • 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
    • C02F2101/40—Organic compounds containing sulfur
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
    • C02F2103/36—Nature 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
    • 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
    • C02F2303/00—Specific treatment goals
    • C02F2303/24—Separation of coarse particles, e.g. by using sieves or screens
    • 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)
  • Water Treatment By Sorption (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The processing method of the Coal Tar Wastewater that the present invention is introduced includes CO2The operations such as the reduction of pressurization manganese aluminium zinc 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 Coal Tar Wastewater
Technical field
A kind of processing method of the waste water produced the present invention relates to coal tar processing and storage process.
Background technology
Coal tar is one of important source material of production of chemicals, the Pollutants in Wastewater that its processing and storage process are produced COD concentration is high, complicated component, and toxicity is big, and contains a large amount of persistence organic pollutants（Containing phenyl ring and（Or）Heterocycle etc. it is organic Thing）, intractability is big.If the waste water is not processed is directly discharged into environment, severe contamination will be caused to environment.Current Coal Tar Wastewater Processing method mainly have burning method and biological treatment.Burning method processing cost is high, and produces atmosphere pollution.Biological treatment Method needs first to carry out advanced oxidation（Such as iron-carbon micro-electrolysis, metal powder reduction, Fenton methods）Pretreatment, then biological treatment. , it is necessary to add sulfuric acid in advanced oxidation preprocessing process, cause subsequent biological treatment（Such as anaerobism, hydrolysis acidification）During produce Raw H2S, produces more serious secondary pollution；Simultaneously because SO4 2-There are obvious inhibitory action, influence life to the growth of microorganism Thing treatment effect, waste water is difficult to stably reaching standard discharge.Exploitation secondary pollution is small, processing cost is low, the coal of energy stably reaching standard discharge The processing method of tar and waste water has larger practical value.
The content of the invention
For the problem of current Coal Tar Wastewater processing method, the purpose of the present invention is that searching secondary pollution is small, can stablize The processing method of the Coal Tar Wastewater of qualified discharge, it is characterised in that the Coal Tar Wastewater feeding after adjusted pond is adjusted is pressure-resistant Reactor, adds reactor, and be passed through industrial CO by cleaning manganese aluminium zinc composite powder2Reacted, the granularity of manganese aluminium zinc composite powder Less than 180 mesh, the content of every kind of metal is not less than 5% in manganese aluminium zinc composite powder（The manganese aluminium zinc composite powder that return is used is not limited System）, every liter of waste water addition manganese aluminium zinc composite powder 10g~50g, 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 manganese aluminium zinc composite powder isolated is returned Return 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 Sedimentation basin precipitates 1h~3h, irregularly extracts sludge out from sedimentation basin and is filtered, and filter cake makees dangerous disposition of solid waste, filter Liquid returns to sedimentation basin.The supernatant waste water of sedimentation basin send anaerobic reactor.Waste water stops 24h~120h in anaerobic reactor, detests Oxygen temperature is 25 DEG C~55 DEG C.Into the treatment of biology aerobic pond normal temperature, the Aerobic Process for Treatment time is 8h~16h to waste water after anaerobism. Waste water after Aerobic Process for 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.Biological filtering tower combined working Filler be activated carbon or porous ceramic grain, be 1.0m~2.0m per thickness degree, gross thickness is 2m~6m.The dominant bacteria of biological filtering tower combined working It is the red pseudomonas in photosynthetic bacteria to plant（Rhodopseudomonas）.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.
The object of the present invention is achieved like this, after Coal Tar Wastewater enters manganese aluminium zinc 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.）By manganese aluminium zinc Composite powder reduces the effect of the strong reduction free radical for producing and destroys, and is that subsequent biochemical treatment creates favorable conditions.It is passed through pressure CO2Purpose be to maintain manganese aluminium zinc composite powder to reduce suitable pH value（2.0~5.0）, waste water milk of lime after reduction or its His alkaline matter adjusts its pH value, to meet the requirement of follow-up anaerobic and aerobic process.Through the waste water of aforementioned processing in anaerobism mistake Cheng Zhong, by the effect of microorganism, larger molecular organicses further become small organic molecule, are that subsequent bio oxidation is created more Advantage.Processed by biological oxidation, remaining most of organic matters are removed, while the pollutant such as removing to denitrogenate.Waste water is most Enter activated carbon or porous ceramic grain biological filtering tower combined working afterwards, in the presence of microorganism, particularly red pseudomonas, further removal has The pollutant such as machine thing and nitrogen, 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 （Coal Tar Wastewater contains a small amount of 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；Burner, fuel combustion are all had in coal tar processing factory Burn the CO for producing2Waste gas can make full use of, and can not only reduce processing cost, and can reduce carbon emission；Waste water after treatment Energy stably reaching standard discharge, with obvious economic benefit and environmental benefit.
Specific implementation method
Embodiment 1：1 cubic metre of Coal Tar Wastewater of day treatment（Volatile phenol 2400mg/L, COD15500mg/L, CN-25.5mg/L、 NH3-N57mg/L）, reduced through manganese aluminium zinc composite powder（1h、40℃、CO2Pressure 0.6MPa, every liter of waste water add manganese aluminium zinc composite powder 40g）, 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, water Power load 35m3/m2.d）The pollutant concentration of water outlet is respectively COD after treatmentCr 58mg/L、NH3- N 8.2mg/L, volatile phenol 0.3mg/L、CN-0.12mg/L。
Embodiment 2：3 cubic metres of Coal Tar Wastewaters of day treatment（Volatile phenol 920mg/L, COD8700mg/L, CN-17mg/L、 NH3-N48mg/L）, reduced through manganese aluminium zinc composite powder（3h、25℃、CO2Pressure 0.1MPa, every liter of waste water add manganese aluminium zinc composite powder 10g）, anaerobism（PH6.8,24h, 35 DEG C~55 DEG C）, it is aerobic（8h）And biological filtering tower combined working（Active carbon filler layer gross thickness 2m, waterpower Load 90m3/m2.d）The pollutant concentration of water outlet is respectively COD after treatmentCr 53mg/L、NH3- N 6.1mg/L, volatile phenol 0.2mg/L、CN-0.07mg/L。

Claims (1)

1. a kind of processing method of Coal Tar Wastewater, it is characterised in that the Coal Tar Wastewater feeding after adjusted pond is adjusted is pressure-resistant Reactor, adds reactor, and be passed through industrial CO by cleaning manganese aluminium zinc composite powder2Reacted, the granularity of manganese aluminium zinc composite powder Less than 180 mesh, the content of every kind of metal is not less than 5% in manganese aluminium zinc composite powder, every liter of waste water add manganese aluminium zinc composite powder 10g~ 50g, the stirring reaction time be 1h~3h, reaction temperature be 25 DEG C~60 DEG C, CO2Pressure be 0.1MPa~1.0MPa, reaction Waste water afterwards carries out solid-liquor separation, the manganese aluminium zinc composite powder Returning reactor isolated, the waste water milk of lime after solid-liquor separation Or other alkaline matters adjust its pH value to 6.8~8.5,1h~3h is precipitated subsequently into sedimentation basin, irregularly from sedimentation basin Extract sludge out to be filtered, filter cake makees dangerous disposition of solid waste, filtrate returns to sedimentation basin, and the supernatant waste water of sedimentation basin send to be detested Oxygen 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 the treatment of biology aerobic pond normal temperature, the Aerobic Process for Treatment time is 8h~16h, the waste water after Aerobic Process for Treatment enter sedimentation basin precipitation 1h~ 3h, irregularly extracts sludge out from sedimentation basin and is filtered, and filter cake makees dangerous disposition of solid waste, and filtrate returns to Aerobic Pond, The supernatant waste water of sedimentation basin 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 It is 2m~6m to spend, and the dominant bacteria of biological filtering tower combined working is the red pseudomonas 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.
CN201611255745.8A 2016-12-30 2016-12-30 The processing method of Coal Tar Wastewater Pending CN106746271A (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, 中国矿业大学出版社 *
张修正: "《化工厂电气手册》", 31 December 1994, 化学工业出版社 *
施悦 等: "《环境氧化还原处理技术原理与应用》", 31 August 2013, 哈尔滨工业大学出版社 *
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, 湖南人民出版社出版 *
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