CN106746311A - 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
CN106746311A
CN106746311A CN201611258859.8A CN201611258859A CN106746311A CN 106746311 A CN106746311 A CN 106746311A CN 201611258859 A CN201611258859 A CN 201611258859A CN 106746311 A CN106746311 A CN 106746311A
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China
Prior art keywords
waste water
sedimentation basin
aluminum
iron
composite powder
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CN201611258859.8A
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Chinese (zh)
Inventor
龙炳清
胡德军
唐勇
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Sichuan Normal University
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Sichuan Normal University
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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 the reduction of pressurization iron-aluminum-manganese composite powder, 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-aluminum-manganese composite powder is added into reactor, It is passed through industrial CO2And reacted under ul-trasonic irradiation.The granularity of iron-aluminum-manganese composite powder is less than 180 mesh, iron-aluminum-manganese composite powder In the content of every kind of metal be not less than 5%（The iron-aluminum-manganese composite powder that return is used is not limited）, every liter of waste water addition iron-aluminum-manganese Composite powder 5g~10g.The stirring reaction time is 10min~40min under ul-trasonic irradiation, and temperature is 25 DEG C~60 DEG C.Often stand The ultrasonic power of square rice waste water input is 2kW~8kW. CO2Pressure be 0.1MPa~1.0MPa.Reacted waste water enters Row solid-liquor separation, the iron-aluminum-manganese composite powder Returning reactor isolated.Waste water milk of lime or other alkalescence after solid-liquor separation Material adjusts its pH value to 6~8, and 1h~3h is precipitated subsequently into sedimentation basin, and 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 of sedimentation basin send hydrolysis acidification pool.Waste water exists Normal temperature stops 8h~24h in hydrolysis acidification pool.Waste water after hydrolysis acidification is processed into biology aerobic pond normal temperature, during Aerobic Process for Treatment Between be 8h~12h.Waste water after Aerobic Process for Treatment enters sedimentation basin and precipitates 1h~3h, and irregularly extracting sludge out from sedimentation basin is carried out Filtering, filter cake makees dangerous disposition of solid waste, and filtrate returns to Aerobic Pond.The supernatant waste water of sedimentation basin is sent at multi-layer biological filter tower Reason.The filler of biological filtering tower combined working is activated carbon or porous ceramic grain, is 1m~2m per thickness degree, and gross thickness is 2m~6m.Biological filtering tower combined working Dominant bacteria be the red pseudomonas in photosynthetic bacteria（Rhodopseudomonas）.The hydraulic load of biological filtering tower combined working is 30 m3/m2.d~100m3/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：Waste water enters pressure-resistant iron-aluminum-manganese composite powder reduction reactor, in waste water Larger molecular organicses, particularly persistence organic pollutant（Organic matter containing phenyl ring, heterocycle）Reduced by iron-aluminum-manganese composite powder Produce strong reduction free radical effect and destroy, be subsequent biochemical treatment create favorable conditions.It is passed through pressure CO2Purpose be Iron-aluminum-manganese composite powder is maintained to reduce suitable pH value（2.0~5.0）；The effect for being input into ultrasonic wave is to speed up the mass transfer of reduction reaction Process.Waste water milk of lime or other alkaline matters after reduction adjust its pH, to meet sequential hydrolysis acidifying and aerobic process Requirement.Through the waste water of aforementioned processing in Hydrolysis Acidification, by the effect of microorganism, larger molecular organicses further become It is that more favorable condition is created in subsequent bio oxidation into small organic molecule.Processed by biological oxidation, it is remaining most of organic Thing is removed.Waste water finally enters activated carbon or porous ceramic grain biological filtering tower combined working, in the effect of microorganism, particularly red pseudomonas Under, further organics removal, it is ensured that the waste water stably reaching standard discharge after 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）, reduced by iron-aluminum-manganese composite powder（Every liter of waste water adds iron-aluminum-manganese composite powder 5g, time 30min, 25 DEG C, CO2The ultrasonic power 4kW that pressure 0.1MPa, every cubic metre of waste water are input into）, hydrolysis acidification （24h、pH6.0）, aerobic biochemical（12h）With activated carbon biological filtering tower combined working（Hydraulic load is 40m3/m2.d, activated carbon gross thickness 2m） Treatment, effluent quality is CODCr56mg/L、CN-0.13mg/L, volatile phenol 0.26mg/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）, reduced by iron-aluminum-manganese composite powder（Every liter of waste water adds iron-aluminum-manganese to be combined Powder 10g, time 10min, 45 DEG C, CO2The ultrasonic power 2kW that pressure 0.3MPa, every cubic metre of waste water are input into）, hydrolysis acidification （8h、pH8.0）, aerobic biochemical（8h）With porous ceramic grain biological filtering tower combined working（Hydraulic load is 100m3/m2.d, porous ceramic grain gross thickness 4m）Treatment, effluent quality is CODCr55mg/L、CN-0.09mg/L, volatile phenol 0.21mg/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-aluminum-manganese composite powder is added into reactor, is passed through industry CO2And reacted under ul-trasonic irradiation, the granularity of iron-aluminum-manganese composite powder is less than 180 mesh, every kind of gold in iron-aluminum-manganese composite powder The content of category is not less than 5%, and every liter of waste water adds iron-aluminum-manganese composite powder 5g~10g, and the stirring reaction time is under ul-trasonic irradiation 10min~40min, temperature is 25 DEG C~60 DEG C, and the ultrasonic power of every cubic metre of waste water input is 2kW~8kW, CO2Pressure Power is 0.1MPa~1.0MPa, and reacted waste water carries out solid-liquor separation, the iron-aluminum-manganese composite powder Returning reactor isolated, liquid Gu separate after waste water milk of lime or other alkaline matters adjust its pH value to 6~8, subsequently into 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 sedimentation basin, The supernatant of sedimentation basin send hydrolysis acidification pool, waste water normal temperature in hydrolysis acidification pool to stop 8h~24h, the waste water after hydrolysis acidification 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 and precipitates 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, and filler is total Thickness is 2m~6m, 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~100m3/m2.d, the standard water discharge discharge or reuse of biological filtering tower combined working.
CN201611258859.8A 2016-12-30 2016-12-30 The processing method of the wastewater containing phenol and cyanide that gas generator is produced Pending CN106746311A (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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