CN106630436A - Treatment method of TNT (trinitrotoluene) production wastewater - Google Patents

Treatment method of TNT (trinitrotoluene) production wastewater Download PDF

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Publication number
CN106630436A
CN106630436A CN201611255659.7A CN201611255659A CN106630436A CN 106630436 A CN106630436 A CN 106630436A CN 201611255659 A CN201611255659 A CN 201611255659A CN 106630436 A CN106630436 A CN 106630436A
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CN
China
Prior art keywords
waste water
sedimentation basin
tower
tnt
biological
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Pending
Application number
CN201611255659.7A
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Chinese (zh)
Inventor
龙炳清
刘澜
冯莎莎
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Sichuan Normal University
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Sichuan Normal University
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Priority to CN201611255659.7A priority Critical patent/CN106630436A/en
Publication of CN106630436A publication Critical patent/CN106630436A/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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • C02F1/4676—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electroreduction
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/38—Organic compounds containing nitrogen
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

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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 treatment method of TNT (trinitrotoluene) production wastewater. The method comprises the work procedures of acid wastewater and base wastewater mixing, solid-liquid separation, CO2 pressurization, iron-carbon microelectrolysis under ultrasonic wave effects, anaerobic, aerobiotic and biological filtration tower treatment and the like. The treated wastewater can be stably discharged in a standard reaching way.

Description

TNT produces the processing method of waste water
Technical field
The present invention relates to a kind of processing method of the waste water of TNT production generations.
Background technology
TNT is a kind of explosive, is dual-use product.The organic waste water pollutant COD concentration that its production is produced is high, into Divide complexity, intractability is big.If the waste water is not processed is directly discharged into environment, severe contamination will be caused to environment.TNT productions are produced Two kinds of waste water, one kind is acid waste water, and another kind is alkaline waste water.At present the processing method of acid waste water is mainly at biology Reason.It is very big to the toxicity of microorganism due to containing nitrobenzene compounds in waste water, affect biological treatment effect, waste water to be difficult to Stably reaching standard is discharged.At present the processing method of alkaline waste water is mainly burning method, due to containing a large amount of nitrobenzenes in waste water Compound, produces a large amount of NO during burningx, major polluting atmosphere environment.Exploitation secondary pollution is little, the TNT lifes of energy stably reaching standard discharge The processing method for producing waste water has larger practical value.
The content of the invention
For the problem of current TNT production wastewater treatments method, the purpose of the present invention is that searching secondary pollution is little, can stablize The TNT of qualified discharge produces the processing method of waste water, it is characterised in that mix acid waste water and alkaline waste water that TNT produces generation Close, mixed waste water enters sedimentation basin, and sedimentation basin has regulatory function concurrently.Sedimentation time is 1h～3h.Irregularly from sedimentation basin Middle extraction sludge is filtered.Filter cake makees dangerous disposition of solid waste.Filtrate returns sedimentation basin.The supernatant waste water of sedimentation basin send Enter pressure Fe-C micro electrolysis（Also known as Inner electrolysis）Tower, is passed through industrial CO2And carry out microelectrolysis processing under ul-trasonic irradiation.Iron charcoal Iron in light electrolysis tower：The ratio of charcoal is 8：1～1：4.Every cubic metre of waste water of input（Including volume shared by iron carbon）Ultrasonic wave work( Rate is 2kW～8kW.Time of staying 30min～60min of the waste water in Fe-C micro electrolysis tower.Reaction temperature is 25 DEG C～60 DEG C. CO2Pressure be 0.3MPa～1.0MPa.Waste water milk of lime or other alkaline matters after microelectrolysis processing adjusts its pH value To 6.8～8.5,1h～3h is precipitated subsequently into sedimentation basin, irregularly extract sludge out from sedimentation basin and filtered, filter cake is endangered Dangerous disposition of solid waste, filtrate returns sedimentation basin.The supernatant of sedimentation basin send anaerobic reactor.Waste water stops in anaerobic reactor 24h～120h is stayed, anaerobism temperature is 25 DEG C～55 DEG C.Waste water after anaerobism is into the process of biology aerobic pond normal temperature, Aerobic Process for Treatment Time is 6h～16h.Waste water after Aerobic Process for Treatment enters sedimentation basin, irregularly extracts sludge out from sedimentation basin and is filtered, and filters 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.It is biological The filler of filter tower is activated carbon or porous ceramic grain, is 1.0m～2.0m per thickness degree, and gross thickness is 2m～6m.Biological filtering tower combined working it is excellent Gesture bacterial classification is the red pseudomonas in photosynthetic bacteria（Rhodopseudomonas）.The hydraulic load of biological filtering tower combined working is 30 m3/ m2.d～90m3/m2.d.The standard water discharge discharge of biological filtering tower combined working or reuse.
The object of the present invention is achieved like this, after the acid waste water and alkaline waste water that TNT productions are produced mixes, waste water meeting Generation acid precipitation reaction.In order to avoid the solid matter contained in itself in the sediment and waste water of acid precipitation reaction generation is to the micro- electricity of iron carbon Solution has a negative impact, therefore carries out separation of solid and liquid to it.Waste water is entered after light electrolysis tower, the larger molecular organicses in waste water, Particularly nitrobenzene matters are destroyed by the effect of the strong reduction free radical that light electrolysis are produced, and substantially reduce waste water to micro- life The toxicity of thing, is that subsequent biochemical process creates favorable conditions.It is passed through pressure CO2Purpose be to maintain iron-carbon micro-electrolysis reduction suitable PH value（2.0～5.0）；The effect of input ultrasonic wave is the mass transport process for accelerating iron-carbon micro-electrolysis.Waste water stone after reduction Grey breast or other alkaline matters adjust its pH value, to meet the requirement of follow-up anaerobic and aerobic process.The premenstrual waste water for stating process In anaerobic processes, by the effect of microorganism, larger molecular organicses further become small organic molecule, are subsequent bio oxygen Change and create more favorable condition.By biological oxidation process, remaining most of organic matters are removed, while go to denitrogenate to wait polluting Thing.Waste water finally enters activated carbon or porous ceramic grain biological filtering tower combined working, in the presence of microorganism, particularly red pseudomonas, enters The pollutant such as one step organics removal and nitrogen, it is ensured that the waste water stably reaching standard discharge after process.
Relative to existing method, the present invention destroys nitrobenzene matters, greatly reduces waste water pair using iron-carbon micro-electrolysis The toxicity of microorganism, and greatly improve the biodegradability energy of waste water；Relative to now widely used destruction nitrobenzene matters Method（Iron-carbon micro-electrolysis, metal powder reduction, Fenton methods etc.）, the outstanding advantages of the present invention are to adopt CO2Replace wide at present The general sulfuric acid for using makees acidulant, does not introduce SO4 2-Ion, largely reducing generation H2The material base of S（TNT production waste water contains S）, so as to significantly reduce H2The pollution of S, while also mitigating SO4 2-Suppression to microorganism during anaerobic and aerobic is made With greatly improving the efficiency of biological treatment, it is ensured that the waste water energy stably reaching standard discharge after process；Boiler is all had in TNT factories, The CO that fuel combustion is produced2Waste gas can make full use of, and can not only reduce processing cost, and can reduce carbon emission, with bright Aobvious economic benefit and environmental benefit.
Specific implementation method
Embodiment 1：1m is processed daily3TNT mixture manufacturing waste water（Composition： CODCr7100mg/L, nitrobenzene matters 835mg/ L、pH6.3）, Jing separation of solid and liquid, Jing Fe-C micro electrolysis（30min、40℃、CO2Pressure 0.6MPa, iron：The ratio of charcoal is 8：1st, surpass Sound wave input power is every cubic metre of waste water 2kW）, anaerobism（PH8.5,96h, 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 90m3/m2.d）The COD of water outlet after processCrFor 60mg/L, nitrobenzene 1.0mg/L、BOD510mg/L, pH6.9, colourity 11.
Embodiment 2：5m is processed daily3Mixture manufacturing waste water（Composition： CODCr7100mg/L, nitrobenzene matters 835mg/L、pH6.3）, Jing Fe-C micro electrolysis（50min、25℃、CO2Pressure 0.3MPa, iron：The ratio of charcoal is 1：4th, ultrasonic wave Input power is every cubic metre of waste water 4kW）, anaerobism（PH7.0,24h, 35 DEG C～55 DEG C）, it is aerobic（6h）And biological filtering tower combined working（Activity Carbon filling material layer gross thickness 2m, hydraulic load 40m3/m2.d）The COD of water outlet after processCrFor 57mg/L, nitrobenzene 0.9mg/L, BOD510mg/L, pH7.0, colourity 10.

Claims (1)

1. a kind of TNT produces the processing method of the waste water for producing, it is characterised in that TNT is produced the acid waste water and alkali for producing Property waste water mixing, mixed waste water enters sedimentation basin, and sedimentation basin has regulatory function concurrently, and the sedimentation time is 1h～3h, irregularly Extract sludge out from sedimentation basin to be filtered, filter cake makees dangerous disposition of solid waste, filtrate returns sedimentation basin, sedimentation basin it is upper Stripping water sends into pressure Fe-C micro electrolysis tower, is passed through industrial CO2And carry out microelectrolysis processing, the micro- electricity of iron charcoal under ul-trasonic irradiation Iron in solution tower：The ratio of charcoal is 8：1～1：4, the ultrasonic power for being input into every cubic metre of waste water is 2kW～8kW, and waste water is in iron charcoal Time of staying 30min～60min in light electrolysis tower, reaction temperature is 25 DEG C～60 DEG C, CO2Pressure be 0.3MPa～ 1.0MPa, the waste water milk of lime or other alkaline matters after microelectrolysis processing adjusts 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 sedimentation basin, and the supernatant of sedimentation basin send anaerobic reactor, waste water to stop 24h～120h, anaerobism temperature in anaerobic reactor Spend for 25 DEG C～55 DEG C, the waste water after anaerobism is into the process of biology aerobic pond normal temperature, and the Aerobic Process for Treatment time is 6h～16h, aerobic Waste water after process enters sedimentation basin, irregularly extracts sludge out from sedimentation basin and is filtered, and filter cake makees dangerous solid waste Dispose, 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, filler gross thickness is 2m～6m, and the dominant bacteria of biological filtering tower combined working is the red pseudomonas in photosynthetic bacteria, 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.
CN201611255659.7A 2016-12-30 2016-12-30 Treatment method of TNT (trinitrotoluene) production wastewater Pending CN106630436A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114230426A (en) * 2021-12-06 2022-03-25 内蒙古生力民爆股份有限公司 Porous granular ammonium nitrate fuel oil explosive and preparation method thereof

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)

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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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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114230426A (en) * 2021-12-06 2022-03-25 内蒙古生力民爆股份有限公司 Porous granular ammonium nitrate fuel oil explosive and preparation method thereof

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