CN101798158A - Advanced treatment method of refractory organic industrial sewage - Google Patents

Advanced treatment method of refractory organic industrial sewage Download PDF

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Publication number
CN101798158A
CN101798158A CN201010131164A CN201010131164A CN101798158A CN 101798158 A CN101798158 A CN 101798158A CN 201010131164 A CN201010131164 A CN 201010131164A CN 201010131164 A CN201010131164 A CN 201010131164A CN 101798158 A CN101798158 A CN 101798158A
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China
Prior art keywords
industrial sewage
refractory organic
biological
organic industrial
treatment method
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CN201010131164A
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Chinese (zh)
Inventor
韩洪军
李慧强
王伟
杜茂安
袁敏
徐春艳
王冰
胡宏博
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Harbin Institute of Technology
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Harbin Institute of Technology
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Priority to CN201010131164A priority Critical patent/CN101798158A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention discloses an advanced treatment method of refractory organic industrial sewage, relating to a processing method of industrial sewage. The advanced treatment method solves the problems that the existing advanced treatment technology of sewage is not suitable for industrial sewage, has high operation cost and has non-ideal organic matter removing effect, and sewage has small possibility of realizing up-to-standard emission. The method comprises: 1. refractory organic industrial sewage which is subjected to biochemical treatment is introduced into a biological deamination tank containing biological carrier for aeration; 2. water flowing out of the biological deamination tank enters a sedimentation basin, and meanwhile, compound coagulant is added and stirred; and 3. supernate in the sedimentation basin flows out and enters an aeration biofilter for aeration, and the process ends after effluent discharge. The invention is suitable for industrial sewage, has low operation cost, and can effectively lower residual COD, ammonia nitrogen and suspended solid after the refractory organic industrial sewage is processed by the biological treatment technology to enable the sewage refractory to biological degradation to achieve up-to-standard emission so as to realize reuse and achieve the purpose of zero emission of sewage.

Description

A kind of deep treatment method of refractory organic industrial sewage
Technical field
The present invention relates to a kind of processing method of industrial waste water.
Background technology
Continuous development along with industry, each more and more refinement of industrial class, the trade effluent that is produced is also varied, pollutant component complexity in the organic industrial sewage, mostly be hazardous and noxious substances, as entering water body and will produce very big harm to environment without dealing carefully with.Contain recalcitrant substance in most of organic industrial sewage, contain the nutritive substance (as ammonia nitrogen etc.) that can cause body eutrophication simultaneously, adopt COD, ammonia nitrogen and suspended solids still residual in the conventional biological treatment water body, emission request can not be satisfied, therefore advanced treatment process need be set up.
At present, waste water advanced treatment process commonly used mainly contains: active carbon absorption technology, activated carbon adsorption technology is used for the advanced treatment of waste water, effective, go out water pollutant and all can reach discharging standards, but because device working cost height, the regeneration of activated carbon difficulty is big, is therefore promoted the use of as yet in the actual waste water advanced treatment.Membrane separation technique, the selection perviousness of this technology utilization film makes pollutent and water sepn in the water, realize the purpose of waste water advanced purifying, membrane separation technique has the good treatment effect, emission standard is satisfied in water outlet, but because the aperture ratio of film is less, when the pollutants in waste water excessive concentration, can cause the film latch up phenomenon, shorten the cleaning interval of film, and then the work-ing life that shortens film increase running cost, so membrane filtration technique is normally used for cleaning in the Treatment for Reuse process of waste water, is not suitable for trade effluent.Though adopt single biological aerated filter process to have good organism and ammonia nitrogen degradation ability, its organic matter removal effect for difficult for biological degradation in the waste water is also undesirable, and waste water is difficult to realize qualified discharge.
Summary of the invention
The present invention seeks to not to be suitable for trade effluent for existing waste water advanced treatment process exists, the running cost height, the organic matter removal effect is undesirable, and waste water is difficult to realize the problem of qualified discharge, and a kind of deep treatment method of refractory organic industrial sewage is provided.
The deep treatment method of refractory organic industrial sewage is realized according to the following steps: one, will be passed into through the refractory organic industrial sewage of biochemical treatment in the biological deamination pond of containing bio-carrier, carry out aeration in bottom, biological deamination pond, make that dissolved oxygen concentration is 4~8mg/L, hydraulic detention time is 8~12h; Two, enter settling tank through the effusive water in biological deamination pond, add compound coagulant and stirring from the settling tank feed-water end simultaneously, hydraulic detention time is 4~6min; Three, the supernatant liquor outflow enters BAF in the settling tank, and aeration rate is 100~150L/h, and hydraulic detention time is 4~6h, and water outlet is discharged, and promptly finishes the advanced treatment of refractory organic industrial sewage; Wherein the dosage of bio-carrier is 20%~50% of a biological deamination pond effective volume in the step 1; Compound coagulant is an iron aluminium compound in the step 2, and the rate of adding is 1%~10%(quality); Be placed with filler in the step 3 in the BAF, filler is a biological ceramic particle, and the filler dosage is 20%~40% of a BAF effective volume.
The present invention adopts biological deamination treatment process, has good ammonia nitrogen removal effect, the bio-carrier that is added in the biological deamination pond is a hollow structure, and the cross bracing skeleton is arranged, biofilm development is in the internal surface of bio-carrier, avoid owing to running foul of each other between hydraulic shear and carrier causes biofilm detachment, has good microbial film protection effect, nitrobacteria is grown on the immobilization carrier, therefore be not subject in the waste water poisonous, objectionable impurities and waste water quality change influence, also can not flow out with water because of the fluctuation of water quality and quantity, have stable, nitrification effect efficiently, can remove ammonia nitrogen remaining in the waste water, guarantee standard wastewater discharge; The biological deamination technology of the present invention need not to replenish mud, need not mud and refluxes, and does not have excess sludge to produce basically, saves the mud consumption, reduces discharging, reduces running cost.
The present invention adopts compound coagulant can reach the double effects of removing COD and decolouring, and dosage is little, can set up decoloration process simultaneously, has reduced capital construction and running cost.The present invention adopts BAF as the post precipitation processing unit, can remove the suspended solids in the water effectively, simultaneously can eliminate of the influence of excessive compound coagulant, therefore can stablize, realize efficiently the qualified discharge of waste water difficult for biological degradation for effluent quality.
The present invention is applicable to trade effluent, running cost is low, can effectively reduce refractory organic industrial sewage behind biological treatment residual COD, ammonia nitrogen and suspended solids, make waste water difficult for biological degradation satisfy emission standard, and then realization reuse, reach the zero release target of waste water, eliminate the harm of trade effluent from the source, realize the doulbe-sides' victory of economic benefit and environmental benefit for the ecotope system.
Embodiment
Embodiment one: the deep treatment method of present embodiment refractory organic industrial sewage is realized according to the following steps: one, will be passed into through the refractory organic industrial sewage of anaerobic-aerobic biochemical treatment in the biological deamination pond of containing bio-carrier, carry out aeration in bottom, biological deamination pond, make that dissolved oxygen concentration is 4~8mg/L, hydraulic detention time is 8~12h; Two, enter settling tank through the effusive water in biological deamination pond, add compound coagulant and stirring from the settling tank feed-water end simultaneously, hydraulic detention time is 4~6min; Three, the supernatant liquor outflow enters BAF in the settling tank, and aeration rate is 100~150L/h, and hydraulic detention time is 4~6h, and water outlet is discharged, and promptly finishes the advanced treatment of refractory organic industrial sewage; Wherein the dosage of bio-carrier is 20%~50% of a biological deamination pond effective volume in the step 1; Compound coagulant is an iron aluminium compound in the step 2, and the rate of adding is 1%~10%(quality); Be placed with filler in the step 3 in the BAF, filler is a biological ceramic particle, and the filler dosage is 20%~40% of a BAF effective volume.
The bio-carrier outward appearance is cylindrical in the present embodiment step 1, diameter and highly be 2cm, and inside has the cross bracing structure, and microbial film mainly grows in the internal surface of bio-carrier; Bio-carrier density is about 0.98g/cm3, and specific surface area is 1200m2/m3, can keep suspended state in water, rely on the pneumatic action of bottom aerating system can be in biological deamination pond fluidisation, have good mass transfer effect.
Dissolved oxygen concentration is 4~8mg/L in the present embodiment step 1, can make nitrifier have higher activity.
The present embodiment step 1 is biological deamination treatment process, need not to replenish mud, need not mud and refluxes, and does not have excess sludge to produce basically, and nitrated stability is high; Simultaneously, after the biochemical treatment of waste water process leading portion, wherein there is the material major part of inhibition to be degraded, therefore for nitrification, the influence that biological deamination treatment process in the present embodiment is subjected to hazardous and noxious substances is very little, can keep very high nitrated stability and ammonia nitrogen removal effect.
Compound coagulant is an iron aluminium compound in the present embodiment step 2, buys for market to obtain.
The supporting layer of BAF is a pebbles in the present embodiment step 3; To flowing to water, waste water can rely on action of gravity to flow in the BAF, has reduced the working cost that brings owing to water level promoting under BAF adopted.
The waste water that flows in the present embodiment step 3 BAF contains biodegradable composition hardly, but the small suspended solids in the waste water can not be removed by the precipitating action of settling tank, therefore can remove small suspended solids by the mechanical filter effect in BAF; Simultaneously, because the compound coagulant in the settling tank belongs to macromolecule organic, excessive compound coagulant can cause the deterioration of effluent quality, and therefore, BAF also has biological degradation concurrently.
Embodiment two: what present embodiment and embodiment one were different is in the step 1 bio-carrier microbial film to be arranged, biomembranous generation is that the first operation in biological deamination pond adds active sludge, make that the concentration of active sludge in reactor is 2~3g/L, internal surface at bio-carrier after moving 15~20 days forms microbial film, and the mass concentration of the suspension active sludge in the biological deamination pond drops to 0.5~0.8g/L simultaneously.Other step and parameter are identical with embodiment one.
In the present embodiment step 1 internal surface of bio-carrier form microbial film be by microorganism progressively enrichment form, the main effect of playing is a pollutent in the degrading waste water, can finish organic matter removal and ammonia nitrogen simultaneously and transform, and has the part denitrification effect simultaneously.
The internal surface of bio-carrier forms the polymer that microbial film is multiple microorganism and the outer material of born of the same parents thereof in the present embodiment step 1, has extremely strong stability and processing power, can stand the bigger change of waste water quality; Therefore, form microbial film on the bio-carrier, this treatment process can reach steadily processing power efficiently.Because nitrobacteria and heterotrophic bacterium are in a disadvantageous position on competition mechanism; therefore; nitrobacteria can grow in biomembranous inside usually; though this structure can produce certain influence to mass transfer; but it has bigger advantage; the influence that can avoid nitrobacteria to be subjected to waste water quality is flowed out with water, so this treatment process can keep higher deamination effect.
Embodiment three: present embodiment and embodiment two are different is activated sludge process in the Industrial Wastewater Treatment engineering that active sludge is handled from actual biochemical in the step 1.Other step and parameter are identical with embodiment two.
Embodiment four: present embodiment and embodiment one are different is that the material of bio-carrier in the step 1 is one or more in Mierocrystalline cellulose, polyurethane, polyethylene, modified poly ethylene, polypropylene, the polystyrene.Other step and parameter are identical with embodiment one.
Embodiment five: what present embodiment and embodiment one were different is to carry out aeration in bottom, biological deamination pond in the step 1, makes that dissolved oxygen concentration is 5~7mg/L, and hydraulic detention time is 9~11h.Other step and parameter are identical with embodiment one.
Embodiment six: what present embodiment and embodiment one were different is to carry out aeration in bottom, biological deamination pond in the step 1, makes that dissolved oxygen concentration is 6mg/L, and hydraulic detention time is 10h.Other step and parameter are identical with embodiment one.
Embodiment seven: present embodiment and embodiment one are different is that the dosage of bio-carrier in the step 1 is 40% of a biological deamination pond effective volume.Other step and parameter are identical with embodiment one.
Embodiment eight: what present embodiment and embodiment one were different is that settling tank adopts the flat flow tube settler in the step 2.Other step and parameter are identical with embodiment one.
Settling tank in the present embodiment has higher mud-water separation effect, and flco in the waste water relies on action of gravity and water sepn, is stacked into the settling tank bottom, and the flco mud at the bottom of adopting scraping and sucking machine with the pond is extracted out; Waste water imports discharge channel by the settling tank surface and flow into next stage technology.
Embodiment nine: present embodiment and embodiment one are different is to add compound coagulant and stir from the settling tank feed-water end in the step 2, and hydraulic detention time is 5min.Other step and parameter are identical with embodiment one.
Embodiment ten: present embodiment and embodiment one are different be in the step 3 in the settling tank supernatant liquor flow out and enter BAF, aeration rate is 120L/h, hydraulic detention time is 5h.Other step and parameter are identical with embodiment one.
Embodiment 11: what present embodiment and embodiment one were different is to be placed with filler in the step 3 in the BAF, and filler is a biological ceramic particle, and the filler dosage is 30% of a BAF effective volume.Other step and parameter are identical with embodiment one.
Embodiment 12: the deep treatment method of present embodiment refractory organic industrial sewage is realized according to the following steps: one, will be passed into through the refractory organic industrial sewage of anaerobic-anoxic biochemical treatment in the biological deamination pond of containing bio-carrier, carry out aeration in bottom, biological deamination pond, make that dissolved oxygen concentration is 6mg/L, hydraulic detention time is 10h; Two, enter settling tank through the effusive water in biological deamination pond, add compound coagulant and stirring from the settling tank feed-water end simultaneously, hydraulic detention time is 5min; Three, the supernatant liquor outflow enters BAF in the settling tank, and aeration rate is 130L/h, and hydraulic detention time is 6h, and water outlet is discharged, and promptly finishes the advanced treatment of refractory organic industrial sewage; Wherein the dosage of bio-carrier is 40% of a biological deamination pond effective volume in the step 1; Compound coagulant is an iron aluminium compound in the step 2, and the rate of adding is the 5%(quality); Be placed with filler in the step 3 in the BAF, filler is a biological ceramic particle, and the filler dosage is 35% of a BAF effective volume.
Refractory organic industrial sewage is from China Coal Longhua, Harbin Coal Chemical Industry Co., Ltd. in the present embodiment; The bio-carrier material is a modified poly ethylene, is of a size of 10mm * 10mm * 10mm.
Present embodiment is handled actual refractory organic industrial sewage, and the effluent COD concentration after biochemical treatment is 150~250mg/L, and ammonia nitrogen concentration is 20~40mg/L, and the pH value is 6.0~7.5; After the waste water process present embodiment advanced treatment, effluent quality reaches the primary standard of People's Republic of China's " waste water comprehensive discharge standard " in (GB8978-1996): COD≤100mg/L, BOD≤30mg/L, total phenol≤10mg/L, volatile phenol≤0.5mg/L, NH3-N≤15mg/L, petroleum-type≤10mg/L, pH are 6~9.

Claims (10)

1. the deep treatment method of a refractory organic industrial sewage, the deep treatment method that it is characterized in that refractory organic industrial sewage is realized according to the following steps: one, will be passed into through the refractory organic industrial sewage of anaerobic-aerobic biochemical treatment in the biological deamination pond of containing bio-carrier, carry out aeration in bottom, biological deamination pond, make that dissolved oxygen concentration is 4~8mg/L, hydraulic detention time is 8~12h; Two, enter settling tank through the effusive water in biological deamination pond, add compound coagulant and stirring from the settling tank feed-water end simultaneously, hydraulic detention time is 4~6min; Three, the supernatant liquor outflow enters BAF in the settling tank, and aeration rate is 100~150L/h, and hydraulic detention time is 4~6h, and water outlet is discharged, and promptly finishes the advanced treatment of refractory organic industrial sewage; Wherein the dosage of bio-carrier is 20%~50% of a biological deamination pond effective volume in the step 1; Compound coagulant is an iron aluminium compound in the step 2, and the rate of adding is 1%~10%(quality); Be placed with filler in the step 3 in the BAF, filler is a biological ceramic particle, and the filler dosage is 20%~40% of a BAF effective volume.
2. the deep treatment method of a kind of refractory organic industrial sewage according to claim 1, it is characterized in that in the step 1 bio-carrier microbial film being arranged, biomembranous generation is that the first operation in biological deamination pond adds active sludge, make that the concentration of active sludge in reactor is 2~3g/L, internal surface at bio-carrier after moving 15~20 days forms microbial film, and the mass concentration of the suspension active sludge in the biological deamination pond drops to 0.5~0.8g/L simultaneously.
3. the deep treatment method of a kind of refractory organic industrial sewage according to claim 2 is characterized in that active sludge is from the activated sludge process in the Industrial Wastewater Treatment engineering of actual biochemical processing in the step 1.
4. the deep treatment method of a kind of refractory organic industrial sewage according to claim 1, the material that it is characterized in that bio-carrier in the step 1 is one or more in Mierocrystalline cellulose, polyurethane, polyethylene, modified poly ethylene, polypropylene, the polystyrene.
5. the deep treatment method of a kind of refractory organic industrial sewage according to claim 1 is characterized in that carrying out aeration in bottom, biological deamination pond in the step 1, makes that dissolved oxygen concentration is 5~7mg/L, and hydraulic detention time is 9~11h.
6. the deep treatment method of a kind of refractory organic industrial sewage according to claim 1 is characterized in that carrying out aeration in bottom, biological deamination pond in the step 1, makes that dissolved oxygen concentration is 6mg/L, and hydraulic detention time is 10h.
7. the deep treatment method of a kind of refractory organic industrial sewage according to claim 1, the dosage that it is characterized in that bio-carrier in the step 1 is 40% of a biological deamination pond effective volume.
8. the deep treatment method of a kind of refractory organic industrial sewage according to claim 1 is characterized in that adding compound coagulant and stirring from the settling tank feed-water end in the step 2, and hydraulic detention time is 5min.
9. the deep treatment method of a kind of refractory organic industrial sewage according to claim 1 is characterized in that in the step 3 that supernatant liquor flows out in the settling tank to enter BAF that aeration rate is 120L/h, and hydraulic detention time is 5h.
10. the deep treatment method of a kind of refractory organic industrial sewage according to claim 1 is characterized in that being placed with in the BAF in the step 3 filler, and filler is a biological ceramic particle, and the filler dosage is 30% of a BAF effective volume.
CN201010131164A 2010-03-24 2010-03-24 Advanced treatment method of refractory organic industrial sewage Pending CN101798158A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101993157A (en) * 2010-09-10 2011-03-30 孙卫东 Technical method for recycling sewage in regeneration process of waste plastics
CN109293008A (en) * 2018-11-07 2019-02-01 太原理工大学 A kind of compound biological enzyme and its method applied to processing paper-making industrial waste water
CN110127855A (en) * 2019-05-10 2019-08-16 河南省图天新能源科技有限公司 A kind of enhanced biological deamination technique of novel biogas slurry advanced treating

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101503267A (en) * 2009-03-13 2009-08-12 哈尔滨工业大学 Coal chemical industry wastewater treating method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101503267A (en) * 2009-03-13 2009-08-12 哈尔滨工业大学 Coal chemical industry wastewater treating method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
《中国给水排水》 20100317 韩洪军等 厌氧/好氧/生物脱氨工艺处理煤化工废水 第73-75页 1-10 第26卷, 第6期 2 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101993157A (en) * 2010-09-10 2011-03-30 孙卫东 Technical method for recycling sewage in regeneration process of waste plastics
CN109293008A (en) * 2018-11-07 2019-02-01 太原理工大学 A kind of compound biological enzyme and its method applied to processing paper-making industrial waste water
CN110127855A (en) * 2019-05-10 2019-08-16 河南省图天新能源科技有限公司 A kind of enhanced biological deamination technique of novel biogas slurry advanced treating

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Open date: 20100811