CN106746244A - 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
CN106746244A
CN106746244A CN201611254685.8A CN201611254685A CN106746244A CN 106746244 A CN106746244 A CN 106746244A CN 201611254685 A CN201611254685 A CN 201611254685A CN 106746244 A CN106746244 A CN 106746244A
Authority
CN
China
Prior art keywords
waste water
sedimentation basin
composite powder
solid
zinc composite
Prior art date
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
CN201611254685.8A
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Chinese (zh)
Inventor
龙炳清
曾凡芸
刁剑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Normal University
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Sichuan Normal University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sichuan Normal University filed Critical Sichuan Normal University
Priority to CN201611254685.8A priority Critical patent/CN106746244A/en
Publication of CN106746244A publication Critical patent/CN106746244A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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

Landscapes

  • 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)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

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, CO2The operations such as the reduction of pressurization ferrimanganic 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

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 ferrimanganic zinc composite powder is added into reactor, and be passed through industrial CO2Reacted, ferrimanganic zinc composite powder Granularity be less than 180 mesh, the content of every kind of metal is not less than 5% in ferrimanganic zinc composite powder（The ferrimanganic zinc composite powder that return is used is not It is so limited）, every liter of waste water addition ferrimanganic zinc composite powder 15g~40g, the stirring reaction time is 2h~4h, and reaction temperature is 25 DEG C~60 DEG C, CO2Pressure be 0.3MPa~1.0MPa.Reacted waste water carries out solid-liquor separation, and the ferrimanganic zinc isolated is answered Close powder Returning reactor.Waste water milk of lime or other alkaline matters after solid-liquor separation adjust its pH value to 7.0~8.5, so Enter sedimentation basin afterwards and precipitate 1h~3h, irregularly extract sludge out from sedimentation basin and filtered, filter cake makees dangerous solid waste Disposal, filtrate returns to sedimentation basin.The supernatant waste water of sedimentation basin send anaerobic reactor.Waste water anaerobic reactor stop 24h~ 120h, 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 to waste water after anaerobism ~16h.Waste water after Aerobic Process for Treatment enters sedimentation basin and precipitates 1h~3h, irregularly extracts sludge out from sedimentation basin and is filtered, 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.It is raw The filler of thing 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 Dominant bacteria 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 or reuse of biological filtering tower combined working.
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 multiple to ferrimanganic zinc Close powder reduction to have a negative impact, be also beneficial to unreacted ferrimanganic zinc composite powder and recycle, therefore solid-liquid point is carried out to it From.After waste water enters ferrimanganic zinc composite powder reduction reactor, the larger molecular organicses in waste water, particularly nitrobenzene matters lead to Cross the effect of the strong reduction free radical that the reduction of ferrimanganic zinc composite powder is produced and destroy, substantially reduce toxicity of the waste water to microorganism, For subsequent biochemical treatment creates favorable conditions.It is passed through pressure CO2Purpose be to maintain ferrimanganic zinc composite powder to reduce suitable pH value （2.0~5.0）, 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 is greatly reduced using ferrimanganic zinc composite powder reduction destruction nitrobenzene matters Waste water greatly improves the biodegradability energy of waste water to the toxicity of microorganism；Relative to now widely used destruction nitrobenzene The method of class material（Iron-carbon micro-electrolysis, metal powder reduction, Fenton methods etc.）, outstanding advantages of the invention are to use CO2Instead of Now widely used sulfuric acid makees acidulant, does not introduce SO4 2-Ion, largely reducing generation H2The material base of S（TNT is produced 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 Make and use, greatly improve the efficiency of biological treatment, it is ensured that the waste water energy stably reaching standard discharge after treatment；TNT factories all have Boiler, 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, tool There are obvious 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）, reduced through separation of solid and liquid, ferrimanganic zinc composite powder（2h、40℃、CO2Pressure 0.6MPa, every liter of waste water add ferrimanganic zinc Composite powder 30g）, 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 total thickness Degree 4m, hydraulic load 90m3/m2.d）The COD of water outlet after treatmentCrIt is 50mg/L, nitrobenzene 0.7mg/L, BOD59mg/L、 PH7.0, colourity 15.
Embodiment 2：5m is processed daily3Mixture manufacturing waste water（Composition： CODCr7100mg/L, nitrobenzene matters 835mg/L、pH6.3）, reduced through ferrimanganic zinc composite powder（4h、25℃、CO2Pressure 0.3MPa, every liter of waste water add ferrimanganic zinc to answer Close powder 15g）, anaerobism（PH7.0,24h, 35 DEG C~55 DEG C）, it is aerobic（6h）And biological filtering tower combined working（Active carbon filler layer gross thickness 2m, Hydraulic load 40m3/m2.d）The COD of water outlet after treatmentCrIt is 54mg/L, nitrobenzene 1.0mg/L, BOD512mg/L, pH6.9, color Degree 19.

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, cleaning ferrimanganic zinc composite powder is added into reactor, and be passed through industrial CO2Reacted, ferrimanganic zinc The granularity of composite powder is less than 180 mesh, and the content of every kind of metal is not less than 5% in ferrimanganic zinc composite powder, and every liter of waste water adds ferrimanganic zinc Composite powder 15g~40g, the stirring reaction time be 2h~4h, reaction temperature be 25 DEG C~60 DEG C, CO2Pressure for 0.3MPa~ 1.0MPa, reacted waste water carries out solid-liquor separation, the ferrimanganic zinc composite powder Returning reactor isolated, 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 to stop 24h~120h in anaerobic reactor, and anaerobism temperature is 25 DEG C~55 DEG C, after anaerobism Waste water into the treatment of biology aerobic pond normal temperature, the Aerobic Process for Treatment time is 6h~16h, 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~90m3/m2.d, the standard water discharge discharge or reuse of biological filtering tower combined working.
CN201611254685.8A 2016-12-30 2016-12-30 TNT produces the processing method of waste water Pending CN106746244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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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: "《爱国卫生运动工作手册》", 31 July 1986, 湖南人民出版社 *
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Application publication date: 20170531