CN106746252A - TNT produces the processing method of waste water - Google Patents

TNT produces the processing method of waste water Download PDF

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Publication number
CN106746252A
CN106746252A CN201611255485.4A CN201611255485A CN106746252A CN 106746252 A CN106746252 A CN 106746252A CN 201611255485 A CN201611255485 A CN 201611255485A CN 106746252 A CN106746252 A CN 106746252A
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CN
China
Prior art keywords
waste water
sedimentation basin
iron powder
treatment
reactor
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611255485.4A
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Chinese (zh)
Inventor
龙炳清
聂付江
邓其娟
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Sichuan Normal University
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Sichuan Normal University
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Publication date
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Priority to CN201611255485.4A priority Critical patent/CN106746252A/en
Publication of CN106746252A publication Critical patent/CN106746252A/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
    • C02F1/34—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
    • C02F2101/30—Organic compounds
    • 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
    • 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

Abstract

The processing method of the TNT production generation waste water that the present invention is introduced includes acid waste water and alkaline waste water mixing, separation of solid and liquid, the CO under ul-trasonic irradiation2The operations such as pressurization iron powder reducing, anaerobism, the treatment of aerobic and biological filtering tower combined working, the waste water after treatment can stably reaching standard discharge.

Description

TNT produces the processing method of waste water
Technical field
A kind of processing method of the waste water produced the present invention relates to TNT productions.
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.The processing method of current acid waste water is mainly biological place Reason.Due to containing nitrobenzene compounds in waste water, the toxicity to microorganism is very big, influences biological treatment effect, and waste water is difficult to Stably reaching standard is discharged.The processing method of current 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, severe contamination atmospheric environment.Exploitation secondary pollution is small, 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 small, can stablize The TNT of qualified discharge produces the processing method of waste water, it is characterised in that the acid waste water and alkaline waste water for producing TNT productions are mixed 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 to sedimentation basin.The supernatant waste water of sedimentation basin send Enter voltage-resistant reactor, cleaning iron powder is added into reactor, under ul-trasonic irradiation and be passed through industrial CO2Reacted.Iron powder Granularity is less than 180 mesh, and every liter of waste water adds iron powder 15g~40g.Under ul-trasonic irradiation the stirring reaction time be 20min~ 50min.Reaction temperature is 25 DEG C~60 DEG C.CO2Pressure be 0.3MPa~1.0MPa.Every cubic metre of waste water is input into ultrasonic wave Power is 2kW~8kW.Reacted waste water carries out solid-liquor separation, the iron powder Returning reactor isolated.It is useless after solid-liquor separation Water milk of lime or other alkaline matters adjust its pH value to 7.0~8.5, precipitate 1h~3h subsequently into sedimentation basin, irregularly Extract sludge out from sedimentation basin to be filtered, filter cake makees dangerous disposition of solid waste, filtrate returns to sedimentation basin.Sedimentation basin it is upper Stripping water send anaerobic reactor.Waste water stops 24h~120h in anaerobic reactor, and anaerobism temperature is 25 DEG C~55 DEG C.After anaerobism Waste water into biology aerobic pond normal temperature treatment, the Aerobic Process for Treatment time be 6h~16h.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 in biology aerobic pond send multi-layer biological filter tower to process.The filler of biological filtering tower combined working is activated carbon or porous pottery Grain, is 1.0m~2.0m per thickness degree, and gross thickness is 2m~6m.The dominant bacteria of biological filtering tower combined working is the red false list in photosynthetic bacteria Born of the same parents bacterium（Rhodopseudomonas）.The hydraulic load of biological filtering tower combined working is 30 m3/m2.d~90m3/m2.d.Biological filtering tower combined working goes out Water qualified discharge 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 mix, waste water meeting Generation acid precipitation reaction.The solid matter contained in itself in the sediment and waste water that are produced in order to avoid acid precipitation reaction is to iron powder reducing Have a negative impact, be also beneficial to unreacted iron powder and recycle, therefore separation of solid and liquid is carried out to it.Waste water enters iron powder also After former reactor, the strong reduction that the larger molecular organicses in waste water, particularly nitrobenzene matters are produced by iron powder reducing from Destroyed by the effect of base, substantially reduce toxicity of the waste water to microorganism, be that subsequent biochemical treatment creates favorable conditions.It is passed through pressure Power CO2Purpose be maintain the suitable pH value of iron powder reducing（2.0~5.0）；The effect for being input into ultrasonic wave is Accelerating reduction reaction Mass transport process.Waste water milk of lime or other alkaline matters after reduction adjust its pH value, to meet follow-up anaerobic and aerobic The requirement of process.Through the waste water of aforementioned processing in anaerobic processes, 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, while the pollutant such as removing to denitrogenate.Waste water finally enters activated carbon or porous ceramic grain biological filtering tower combined working, special in microorganism In the presence of not being red pseudomonas, the pollutant such as further organics removal and nitrogen, it is ensured that the waste water stably reaching standard after treatment Discharge.
Relative to existing method, the present invention destroys nitrobenzene matters, greatly reduces waste water to micro- using iron powder reducing Biological toxicity, 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.）, outstanding advantages of the invention are to use CO2Instead of extensive at present The 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 treatment；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）, through separation of solid and liquid, iron powder reducing（20min、40℃、CO2Pressure 0.6MPa, every liter of waste water add iron powder 30g, every The power of cubic meter waste water input ultrasonic wave is 4kW）, anaerobism（PH8.5,96h, 25 DEG C~35 DEG C）, it is aerobic（12h）And biological filter Tower（Porous ceramic grain packing layer gross thickness 4m, hydraulic load 90m3/m2.d）The COD of water outlet after treatmentCrIt is 70mg/L, nitrobenzene 1.2mg/L、BOD511mg/L, pH6.8, colourity 21.
Embodiment 2：5m is processed daily3Mixture manufacturing waste water（Composition： CODCr7100mg/L, nitrobenzene matters 835mg/L、pH6.3）, through iron powder reducing（40min、25℃、CO2Pressure 0.3MPa, every liter of waste water add iron powder 15g, every cube The power of rice waste water input ultrasonic wave is 2kW）, anaerobism（PH7.0,24h, 35 DEG C~55 DEG C）, it is aerobic（6h）And biological filtering tower combined working（It is living Property carbon filling material layer gross thickness 2m, hydraulic load 40m3/m2.d）The COD of water outlet after treatmentCrIt is 75mg/L, nitrobenzene 1.3mg/ L、BOD512mg/L, pH6.9, colourity 23.

Claims (1)

1. a kind of TNT produces the processing method of the waste water for producing, it is characterised in that the acid waste water and alkalescence for producing TNT productions Waste water mixes, and mixed waste water enters sedimentation basin, and sedimentation basin has regulatory function concurrently, and the sedimentation time is 1h~3h, irregularly from Extract sludge in sedimentation basin out to be filtered, filter cake makees dangerous disposition of solid waste, filtrate returns to sedimentation basin, the supernatant of sedimentation basin Waste water sends into voltage-resistant reactor, and cleaning iron powder is added into reactor, under ul-trasonic irradiation and is passed through industrial CO2Reacted, The granularity of iron powder is less than 180 mesh, and every liter of waste water adds iron powder 15g~40g, and the stirring reaction time is under ul-trasonic irradiation 20min~50min, reaction temperature be 25 DEG C~60 DEG C, CO2Pressure be 0.3MPa~1.0MPa, the input of every cubic metre of waste water The power of ultrasonic wave is 2kW~8kW, and reacted waste water carries out solid-liquor separation, and the iron powder Returning reactor isolated, liquid divides admittedly Waste water milk of lime or other alkaline matters after adjust its pH value to 7.0~8.5, 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 waste water of sedimentation basin send anaerobic reactor, waste water to stop 24h~120h in anaerobic reactor, and anaerobism temperature is 25 DEG C~55 DEG C, into the treatment of biology aerobic pond normal temperature, the Aerobic Process for Treatment time is 6h~16h, the waste water after Aerobic Process for Treatment to the waste water after anaerobism 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 for 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 filter The hydraulic load of tower is 30 m3/m2.d~90m3/m2.d, the standard water discharge discharge or reuse of biological filtering tower combined working.
CN201611255485.4A 2016-12-30 2016-12-30 TNT produces the processing method of waste water Pending CN106746252A (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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