CN106746312A - The processing method of the wastewater containing phenol and cyanide that gas generator is produced - Google Patents

The processing method of the wastewater containing phenol and cyanide that gas generator is produced Download PDF

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Publication number
CN106746312A
CN106746312A CN201611258965.6A CN201611258965A CN106746312A CN 106746312 A CN106746312 A CN 106746312A CN 201611258965 A CN201611258965 A CN 201611258965A CN 106746312 A CN106746312 A CN 106746312A
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CN
China
Prior art keywords
waste water
sedimentation basin
iron powder
gas generator
cyanide
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Pending
Application number
CN201611258965.6A
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Chinese (zh)
Inventor
龙炳清
姜鹏飞
公培宝
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Sichuan Normal University
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Sichuan Normal University
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Priority to CN201611258965.6A priority Critical patent/CN106746312A/en
Publication of CN106746312A publication Critical patent/CN106746312A/en
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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
    • C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • 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
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C02F2101/18—Cyanides
    • 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
    • C02F2101/34—Organic compounds containing oxygen
    • C02F2101/345—Phenols
    • 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
    • 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
    • C02F3/30—Aerobic and anaerobic 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

Abstract

The processing method of the wastewater containing phenol and cyanide that the gas generator that the present invention is introduced is produced includes filtering, the CO under ul-trasonic irradiation2The treatment process such as pressurization iron powder reducing, precipitation, hydrolysis acidification, aerobic, biological filtering tower combined working, the waste water energy stably reaching standard discharge after treatment.

Description

The processing method of the wastewater containing phenol and cyanide that gas generator is produced
Technical field
A kind of processing method of the wastewater containing phenol and cyanide produced the present invention relates to gas generator.
Background technology
Coal gas is a class widely used fuel in production and life, and it is to be by one in gas generator by coal Row chemically react and are obtained.During cooled coal gas is prepared, wastewater containing phenol and cyanide is inevitably resulted from（Waste water containing phenol and cyanogen）, If the waste water is directly discharged into environment and will cause severe contamination to environment.The processing method of current wastewater containing phenol and cyanide mainly has biochemistry Processing method, independent burning method, water-coal-slurry facture processed and it is mixed into drying tower Feedstock treating method.The treatment of biochemistry treatment method Effect is unstable, relatively costly；Although independent burning method treatment effect is very well, processing cost is very high；Water-coal-slurry facture processed Coal slurry industry investment it is big, many producers are without this system, it is difficult to implement.It is mixed into drying tower Feedstock treating method, low-temperature zone A large amount of evaporations, thus make considerable part phenol and cyanogen have neither part nor lot in chemical reaction and enter air.Development cost is low, high treating effect The processing method of the wastewater containing phenol and cyanide that gas generator is produced has larger practical value.
The content of the invention
The problem of the processing method of the wastewater containing phenol and cyanide produced for current gas generator, the purpose of the present invention is at searching Reason low cost, the processing method of the wastewater containing phenol and cyanide of the gas generator generation of high treating effect, it is characterised in that coal gas occurs The wastewater containing phenol and cyanide that stove is produced is filtered, the feeding voltage-resistant reactor after filtering, and cleaning iron powder is added into reactor, is passed through industry CO2And reacted under ul-trasonic irradiation.The granularity of iron powder is less than 180 mesh, and every liter of waste water adds iron powder 5g~10g.Super The stirring reaction time is 10min~40min under sound wave effect, and temperature is 25 DEG C~60 DEG C.Every cubic metre of ultrasound of waste water input Wave power is 2kW~8kW. CO2Pressure be 0.1MPa~1.0MPa.Reacted waste water carries out solid-liquor separation, isolates Iron powder Returning reactor.Waste water milk of lime or other alkaline matters after solid-liquor separation adjust its pH value to 6~8, Ran Houjin Enter sedimentation basin precipitation 1h~3h, irregularly extract sludge out from sedimentation basin and filtered, filter cake makees dangerous disposition of solid waste, Filtrate returns to sedimentation basin.The supernatant of sedimentation basin send hydrolysis acidification pool.Waste water normal temperature in hydrolysis acidification pool stops 8h~24h. Into the treatment of biology aerobic pond normal temperature, the Aerobic Process for Treatment time is 8h~12h to waste water after hydrolysis acidification.Waste water after Aerobic Process for Treatment 1h~3h is precipitated into sedimentation basin, irregularly sludge is extracted out from sedimentation basin and is filtered, filter cake is made at dangerous solid waste Put, filtrate returns to Aerobic Pond.The supernatant waste water of sedimentation basin send multi-layer biological filter tower to process.The filler of biological filtering tower combined working be activated carbon or Porous ceramic grain, is 1m~2m 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 Monad（Rhodopseudomonas）.The hydraulic load of biological filtering tower combined working is 30 m3/m2.d~100m3/m2.d.Biological filtering tower combined working Standard water discharge is discharged or reuse.
The object of the present invention is achieved like this：Waste water enters pressure-resistant iron powder reducing reactor, and the macromolecular in waste water has Machine thing, particularly persistence organic pollutant（Organic matter containing phenyl ring, heterocycle）The strong reduction freedom produced by iron powder reducing The effect of base and destroy, be subsequent biochemical treatment create favorable conditions.It is passed through pressure CO2Purpose be maintain iron powder reducing it is suitable PH value（2.0~5.0）；The effect for being input into ultrasonic wave is to speed up the mass transport process of reduction reaction.Waste water lime after reduction Breast or other alkaline matters adjust its pH, to meet sequential hydrolysis acidifying and the requirement of aerobic process.Through the waste water of aforementioned processing In Hydrolysis Acidification, by the effect of microorganism, larger molecular organicses further become small organic molecule, are follow-up life More favorable condition is created in thing oxidation.Processed by biological oxidation, remaining most of organic matters are removed.Waste water finally enters work Property charcoal or porous ceramic grain biological filtering tower combined working, in the presence of microorganism, particularly red pseudomonas, further organics removal is protected Waste water stably reaching standard discharge after card treatment.
Relative to existing method, outstanding advantages of the invention are to use CO2It is acidified instead of now widely used sulfuric acid Agent, does not introduce SO4 2-Ion, essentially eliminates generation H2The material base of S（Contain a small amount of S in wastewater containing phenol and cyanide）, so as to subtract significantly Light H2The pollution of S, while it also avoid SO4 2-To hydrolysis acidification and it is aerobic during microorganism inhibitory action, greatly improve The efficiency of biological treatment；The producer of gas generator is had, subsequent combustion device, CO needed for the present invention are had mostly2Can be from combustion It is isolated in the waste gas that burning is produced, processing cost can be not only reduced, and carbon emission can be reduced；Waste water energy after treatment is steady Determine qualified discharge, and be adapted to focusing on for the wastewater containing phenol and cyanide that remaining many gas generators are produced, investment reduction, with obvious Economic benefit and environmental benefit.
Specific implementation method
Embodiment 1：Daily treatment 1m3The wastewater containing phenol and cyanide that gas generator is produced（pH8.3、CODCr8200mg/L, volatile phenol 930mg/L、CN-4.0mg/L, T-N128mg/L）, by iron powder reducing（Every liter of waste water adds iron powder 5g, time 30min, 25 ℃、CO2The ultrasonic power 4kW that pressure 0.1MPa, every cubic metre of waste water are input into）, hydrolysis acidification（24h、pH6.0）, aerobic life Change（12h）With activated carbon biological filtering tower combined working（Hydraulic load is 40m3/m2.d, activated carbon gross thickness 2m）Process, effluent quality is CODCr72mg/L、CN-0.12mg/L, volatile phenol 0.30mg/L, T-N16mg/L.
Embodiment 2：Daily treatment 20m3The wastewater containing phenol and cyanide that gas generator is produced（pH8.2、CODCr7800mg/L, volatilization Phenol 760mg/L, CN-4.2mg/L,T-N112mg/L）, by iron powder reducing（Every liter of waste water add iron powder 10g, time 10min, 45℃、CO2The ultrasonic power 2kW that pressure 0.3MPa, every cubic metre of waste water are input into）, hydrolysis acidification（8h、pH8.0）, aerobic life Change（8h）With porous ceramic grain biological filtering tower combined working（Hydraulic load is 100m3/m2.d, porous ceramic grain gross thickness 4m）Process, effluent quality is CODCr63mg/L、CN-0.10mg/L, volatile phenol 0.18mg/L, T-N13mg/L.

Claims (1)

1. a kind of processing method of the wastewater containing phenol and cyanide that gas generator is produced, it is characterised in that the phenol for producing gas generator Cyanogen waste water is filtered, the feeding voltage-resistant reactor after filtering, and cleaning iron powder is added into reactor, is passed through industrial CO2And super Reacted under sound wave effect, the granularity of iron powder is less than 180 mesh, and every liter of waste water adds iron powder 5g~10g, under ul-trasonic irradiation The stirring reaction time is 10min~40min, and temperature is 25 DEG C~60 DEG C, and the ultrasonic power of every cubic metre of waste water input is 2kW ~8kW, CO2Pressure be 0.1MPa~1.0MPa, reacted waste water carries out solid-liquor separation, and the iron powder isolated returns anti- Device is answered, the waste water milk of lime or other alkaline matters after solid-liquor separation adjust its pH value to 6~8, it is heavy subsequently into sedimentation basin Shallow lake 1h~3h, irregularly extracts sludge out from sedimentation basin and is filtered, and filter cake makees dangerous disposition of solid waste, and filtrate returns heavy Shallow lake pond, the supernatant of sedimentation basin send hydrolysis acidification pool, and waste water normal temperature in hydrolysis acidification pool stops 8h~24h, after hydrolysis acidification Waste water into the treatment of biology aerobic pond normal temperature, the Aerobic Process for Treatment time is 8h~12h, and the waste water after Aerobic Process for Treatment enters 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 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, is filled out Material gross thickness is 2m~6m, and the dominant bacteria of biological filtering tower combined working is the red pseudomonas in photosynthetic bacteria, and the waterpower of biological filtering tower combined working is born Lotus is 30 m3/m2.d~100m3/m2.d, the standard water discharge discharge or reuse of biological filtering tower combined working.
CN201611258965.6A 2016-12-30 2016-12-30 The processing method of the wastewater containing phenol and cyanide that gas generator is produced Pending CN106746312A (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

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