CN106673357A - Treatment method of deaminized garbage leachate - Google Patents

Treatment method of deaminized garbage leachate Download PDF

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Publication number
CN106673357A
CN106673357A CN201611259172.6A CN201611259172A CN106673357A CN 106673357 A CN106673357 A CN 106673357A CN 201611259172 A CN201611259172 A CN 201611259172A CN 106673357 A CN106673357 A CN 106673357A
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CN
China
Prior art keywords
waste water
treatment
aluminium zinc
composite powder
zinc composite
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Pending
Application number
CN201611259172.6A
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Chinese (zh)
Inventor
龙炳清
唐勇
胡德军
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Sichuan Normal University
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Sichuan Normal University
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Priority to CN201611259172.6A priority Critical patent/CN106673357A/en
Publication of CN106673357A publication Critical patent/CN106673357A/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
    • 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
    • C02F2101/32—Hydrocarbons, e.g. oil
    • 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
    • C02F2103/06—Contaminated groundwater or leachate
    • 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
    • C02F3/02—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

Abstract

The invention discloses a treatment method of deaminized garbage leachate. The method comprises the steps of pre-neutralizing CO2, carrying out liquid-solid separation, pressing manganese-aluminum-zinc composite powder via CO2 under the action of ultrasonic wave, reducing, carrying out anaerobic treatment, carrying out aerobiotic treatment and carrying out treatment via a biological filter tower. The wastewater treated by the method can achieve stable up-to-standard emission.

Description

The processing method of the percolate after deamination treatment
Technical field
The present invention relates to a kind of processing method of the percolate after being processed through deamination.
Background technology
Garbage loading embeading inevitably produces percolate.Pollutants from landfill leachate COD concentration is high, and composition is multiple Miscellaneous, intractability is big.If the waste water is not processed is directly discharged into environment, severe contamination will be caused to environment.Current percolate The main method being combined using biological treatment and materializing strategy is processed.It is a considerable amount of due to containing in percolate Persistence organic pollutant（Containing phenyl ring and（Or）Heterocycle organic matter）, thereby resulting in Biochemical method percolate can not be up to standard Discharge.Usual percolate first uses blow-off method deamination, then through biological treatment, eventually passes counter-infiltration or advanced oxidation（Such as Fenton methods, catalytic oxidation etc.）Further treatment could qualified discharge.Reverse-osmosis treated can produce concentrated water, this part concentrated water General recharge landfill waste, thus causes the salinity of percolate to increase, and reverse-osmosis treated is adversely affected, when serious Reverse osmosis treatment system is caused to be paralysed.Advanced oxidation processes processing cost is high.Development cost is low, the rubbish of energy stably reaching standard discharge oozes The processing method of filtrate has larger practical value.
The content of the invention
For the problem that current method for treating garbage percolation liquid is present, the purpose of the present invention is to find low cost, can stablize The processing method of the percolate of qualified discharge, it is characterised in that the percolate CO after being processed through deamination2（CO2Can Being industrial CO2, or fuel combustion, the CO that mineral are decomposed, fermentation process is produced2）PH value is neutralized less than 7, liquid is carried out Gu separating, the waste water isolated enters regulating reservoir, and the solid isolated returns to refuse landfill landfill.After adjusted pond regulation Waste water sends into voltage-resistant reactor, and cleaning manganese aluminium zinc composite powder is added into reactor, under ul-trasonic irradiation and is passed through industrial CO2Enter Row reaction.The granularity of manganese aluminium zinc composite powder is less than 180 mesh, and the content of every kind of metal is not less than 5% in manganese aluminium zinc composite powder（Return The manganese aluminium zinc composite powder for using is not limited）.Every liter of waste water adds manganese aluminium zinc composite powder 10g~40g.The stirring reaction time is 20min~45min.Reaction temperature is 25 DEG C~60 DEG C.CO2Pressure be 0.3MPa~1.0MPa.Every cubic metre of waste water input The power of ultrasonic wave is 2kW~8kW.Reacted waste water carries out solid-liquor separation, and the manganese aluminium zinc composite powder isolated returns to reaction Device.Waste water milk of lime or other alkaline matters after solid-liquor separation adjust its pH value to 7.0~8.5, anti-subsequently into anaerobism Answer device.Waste water stops 24h~120h in anaerobic reactor, and anaerobism temperature is 25 DEG C~55 DEG C.Waste water after anaerobism enters biological Aerobic Pond normal temperature treatment, the Aerobic Process for Treatment time is 6h~16h.Waste water after Aerobic Process for Treatment enters sedimentation basin, and the sedimentation time is 1h ~3h.Irregularly extract sludge out from sedimentation basin to be filtered, filter cake returns to refuse landfill landfill, 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 is activated carbon or porous ceramic grain, per thickness degree It is 0.5m~2.0m, gross thickness is 2m~4m.The dominant bacteria of biological filtering tower combined working is the red pseudomonas in photosynthetic bacteria （Rhodopseudomonas）.The hydraulic load of biological filtering tower combined working is 40 m3/m2.d~100m3/m2.d.The water outlet of biological filtering tower combined working reaches Mark discharge.
The object of the present invention is achieved like this, through deamination process percolate solid matter it is more, basicity compared with Height, if using plus milk of lime carry out stripping deamination technique, the percolate contains more Ca2+, it and CO2It is anti-in percolate CaCO should be generated3.Before manganese aluminium zinc composite powder reduction reactor is entered, CO is used2Preneutralization precipitation is carried out, and carries out solid-liquor separation, Avoid solid matter and generation CaCO3Influence to the reduction of manganese aluminium zinc composite powder, is also beneficial to the complete manganese aluminium zinc of unreacted and is combined Powder recycling.After the waste water isolated enters manganese aluminium zinc composite powder reduction reactor, the larger molecular organicses in waste water are special It is not persistence organic pollutant（Containing phenyl ring and（Or）The organic matter of heterocycle etc.）The strong of generation is reduced by manganese aluminium zinc composite powder Reduce the effect of free radical and destroy, be that subsequent biochemical treatment creates favorable conditions.It is passed through pressure CO2Purpose be maintain manganese aluminium Zinc composite powder reduces 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.Also Waste water milk of lime or other alkaline matters after original adjust its pH value, to meet the requirement of follow-up anaerobic and aerobic process.Through In anaerobic processes, by the effect of microorganism, it is organic that larger molecular organicses further become small molecule to the waste water of aforementioned processing Thing, is that more favorable condition is created in subsequent bio oxidation.Processed by biological oxidation, remaining most of organic matters are removed, together When go to denitrogenate the pollutants such as phosphorus.Waste water finally enters activated carbon or porous ceramic grain biological filtering tower combined working, in microorganism, particularly red false list In the presence of born of the same parents bacterium, the pollutant such as further organics removal and nitrogen phosphorus, it is ensured that the waste water stably reaching standard discharge after treatment.
Relative to existing method, outstanding advantages of the invention are reduced using manganese aluminium zinc composite powder, by percolate Persistence organic pollutant destruction, be that subsequent biological treatment creates favorable conditions, thus ensure treatment after waste water stabilization reach Mark discharge；Relative to the metal deoxidization used in other wastewater treatments, using CO2Make instead of now widely used sulfuric acid Acidulant, does not introduce SO4 2-Ion, eliminates generation H2The material base of S, so as to avoid H2The pollution of S, while it also avoid SO4 2-To the inhibitory action of microorganism during anaerobic and aerobic, the efficiency of biological treatment is greatly improved；Refuse landfill is filled Contain abundant CO in waste gas2Waste gas is available for utilizing, and can not only reduce processing cost, and can reduce carbon emission；After treatment Waste water energy stably reaching standard is discharged, with obvious economic benefit and environmental benefit.
Specific implementation method
Embodiment 1：1m is processed daily3Deamination percolate（Composition：CODCr45000 mg/L、NH3-N115 mg/L、T- P30mg/L）, through CO2Preneutralization, solid-liquor separation, the reduction of manganese aluminium zinc composite powder（20min、40℃、CO2Pressure 0.8MPa, every liter give up Water adds manganese aluminium zinc composite powder 30g, every cubic metre of waste water to be input into the power 4kW of ultrasonic wave）, anaerobism（PH8.5,96h, 25 DEG C~ 35℃）, it is aerobic（10h）And biological filtering tower combined working（Porous ceramic grain packing layer gross thickness 4m, hydraulic load 100m3/m2.d）Water outlet after treatment CODCrIt is 59mg/L, NH3-N6.5mg/L、T-P0.3mg/L。
Embodiment 2：5m is processed daily3Deamination percolate（Composition: CODCr18000 mg/L、NH3-N43 mg/L、 T-P13mg/L）, through CO2Preneutralization, solid-liquor separation, the reduction of manganese aluminium zinc composite powder（35min、25℃、CO2Pressure 0.3MPa, every liter Waste water adds manganese aluminium zinc composite powder 10g, every cubic metre of waste water to be input into the power 2kW of ultrasonic wave）, anaerobism（pH7.0、24h、35℃ ~55 DEG C）, it is aerobic（6h）And biological filtering tower combined working（Active carbon filler layer gross thickness 2m, hydraulic load 50m3/m2.d）Water outlet after treatment CODCrIt is 46mg/L, NH3-N4.2mg/L、T-P0.3mg/L。

Claims (1)

1. it is a kind of through deamination process after percolate processing method, it is characterised in that the rubbish after being processed through deamination Percolate CO2PH value is neutralized less than 7, solid-liquor separation is carried out, the waste water isolated enters regulating reservoir, and the solid isolated is returned Refuse landfill landfill is returned, the waste water feeding voltage-resistant reactor after adjusted pond regulation adds cleaning manganese aluminium zinc composite powder anti- Device is answered, under ul-trasonic irradiation and industrial CO is passed through2Reacted, the granularity of manganese aluminium zinc composite powder is less than 180 mesh, and manganese aluminium zinc is answered The content for closing every kind of metal in powder is not less than 5%, and every liter of waste water adds manganese aluminium zinc composite powder 10g~40g, and the stirring reaction time is 20min~45min, 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 manganese aluminium zinc composite powder isolated returns to reaction Device, waste water milk of lime or other alkaline matters after solid-liquor separation adjust its pH value to 7.0~8.5, anti-subsequently into anaerobism Device, waste water is answered to stop 24h~120h in anaerobic reactor, anaerobism temperature is 25 DEG C~55 DEG C, and the waste water after anaerobism enters biological The treatment of 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, and the sedimentation time is 1h ~3h, irregularly extracts sludge out from sedimentation basin and is filtered, and filter cake returns to refuse landfill landfill, and filtrate returns to 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 total thickness It is 2m~4m to spend, 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 40 m3/m2.d~100m3/m2.d, the standard water discharge discharge of biological filtering tower combined working.
CN201611259172.6A 2016-12-30 2016-12-30 Treatment method of deaminized garbage leachate Pending CN106673357A (en)

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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 (6)

* 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 *
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