CN106746319A - The processing method of the percolate after deamination treatment - Google Patents

Abstract

The processing method through the percolate after deamination treatment that the present invention is introduced includes CO₂Preneutralization, solid-liquor separation, the CO under ul-trasonic irradiation₂The operations such as the reduction of pressurization ferrimanganic composite powder, anaerobism, the treatment of aerobic and biological filtering tower combined working, the waste water after treatment can stably reaching standard discharge.

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 ferrimanganic composite powder is added into reactor, under ul-trasonic irradiation and is passed through industrial CO₂Carry out Reaction.The granularity of ferrimanganic composite powder is less than 180 mesh, and the content of every kind of metal is not less than 5% in ferrimanganic composite powder（What return was used Ferrimanganic composite powder is not limited）.Every liter of waste water adds ferrimanganic composite powder 10g~40g.The stirring reaction time be 20min~ 45min.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 ferrimanganic composite powder Returning reactor isolated.Solid-liquor separation Waste water milk of lime or other alkaline matters afterwards adjusts its pH value to 7.0~8.5, subsequently into anaerobic reactor.Waste water exists Anaerobic reactor stops 24h~120h, and anaerobism temperature is 25 DEG C~55 DEG C.Waste water after anaerobism enters biology aerobic Chi Changwenchu Reason, 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 from Extract sludge in sedimentation basin out to be filtered, filter cake returns to refuse landfill landfill, filtrate returns to Aerobic Pond.The upper waste cleaning of sedimentation basin Water send multi-layer biological filter tower to process.The filler of biological filtering tower combined working is activated carbon or porous ceramic grain, is 0.5m~2.0m per thickness degree, always Thickness is 2m~4m.The dominant bacteria of biological filtering tower combined working is the red pseudomonas in photosynthetic bacteria（Rhodopseudomonas）.It is raw The hydraulic load of thing filter tower is 40 m³/m².d~100m³/m².d.The standard water discharge discharge of biological filtering tower combined working.

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 ferrimanganic composite powder reduction reactor is entered, CO is used₂Preneutralization precipitation is carried out, and carries out solid-liquor separation, kept away Exempt from solid matter and generation CaCO₃Influence to the reduction of ferrimanganic composite powder, is also beneficial to the complete ferrimanganic composite powder of unreacted and reclaims Recycle.After the waste water isolated enters ferrimanganic composite powder reduction reactor, the larger molecular organicses in waste water, particularly persistently Property organic pollution（Containing phenyl ring and（Or）The organic matter of heterocycle etc.）The strong reduction free radical for producing is reduced by ferrimanganic composite powder Effect and destroy, be subsequent biochemical treatment create favorable conditions.It is passed through pressure CO₂Purpose be to maintain the reduction of ferrimanganic composite powder 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.Waste water after reduction is used Milk of lime or other alkaline matters adjust its pH value, to meet the requirement of follow-up anaerobic and aerobic process.Through the useless of aforementioned processing In anaerobic processes, by the effect of microorganism, larger molecular organicses further become small organic molecule to water, are subsequent bio More favorable condition is created in oxidation.Processed by biological oxidation, remaining most of organic matters are removed, while going to denitrogenate the dirts such as phosphorus Dye thing.Waste water finally enters activated carbon or porous ceramic grain biological filtering tower combined working, in the presence of microorganism, particularly red pseudomonas, The further pollutant such as 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 ferrimanganic composite powder, by percolate Persistence organic pollutant is destroyed, and is that subsequent biological treatment creates favorable conditions, so as to ensure the waste water stably reaching standard after treatment Discharge；Relative to the metal deoxidization used in other wastewater treatments, using CO₂Make acid instead of now widely used sulfuric acid Agent, 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：COD_Cr45000 mg/L、NH₃-N115 mg/L、T- P30mg/L）, through CO₂Preneutralization, solid-liquor separation, the reduction of ferrimanganic composite powder（20min、40℃、CO₂Pressure 0.8MPa, every liter of waste water Ferrimanganic composite powder 30g, every cubic metre of waste water is added 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 COD_CrIt is 82mg/L, NH₃-N 7.5mg/L、T-P0.2mg/L。

Embodiment 2：5m is processed daily³Deamination percolate（Composition: COD_Cr18000 mg/L、NH₃-N43 mg/L、 T-P13mg/L）, through CO₂Preneutralization, solid-liquor separation, the reduction of ferrimanganic composite powder（35min、25℃、CO₂Pressure 0.3MPa, every liter give up Water adds ferrimanganic composite powder 10g, every cubic metre of waste water to be input into the power 2kW of ultrasonic wave）, anaerobism（PH7.0,24h, 35 DEG C~55 ℃）, 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 COD_CrIt is 66mg/L, NH₃-N 6.4mg/L、T-P0.2mg/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, cleaning ferrimanganic composite powder is added reaction by the waste water feeding voltage-resistant reactor after adjusted pond regulation Device, under ul-trasonic irradiation and is passed through industrial CO₂Reacted, the granularity of ferrimanganic composite powder is less than 180 mesh, in ferrimanganic composite powder The content of every kind of metal is not less than 5%, and every liter of waste water adds ferrimanganic composite powder 10g~40g, the stirring reaction time be 20min~ 45min, reaction temperature be 25 DEG C~60 DEG C, CO₂Pressure be 0.3MPa~1.0MPa, every cubic metre of waste water input ultrasonic wave Power is 2kW~8kW, and reacted waste water carries out solid-liquor separation, the ferrimanganic composite powder Returning reactor isolated, solid-liquor separation Waste water milk of lime or other alkaline matters afterwards adjusts its pH value to 7.0~8.5, and subsequently into anaerobic reactor, waste water exists Anaerobic reactor stops 24h~120h, and anaerobism temperature is 25 DEG C~55 DEG C, and the waste water after anaerobism enters biology aerobic Chi Changwenchu Reason, 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 from Extract sludge in sedimentation basin out to be filtered, filter cake returns to refuse landfill landfill, filtrate returns to Aerobic Pond, the upper waste cleaning of sedimentation basin Water 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 gross thickness is 2m~4m, biological The dominant bacteria of filter tower 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.