CN109133522A - A kind of garbage leachate treatment process system and method - Google Patents
A kind of garbage leachate treatment process system and method Download PDFInfo
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- CN109133522A CN109133522A CN201811107821.XA CN201811107821A CN109133522A CN 109133522 A CN109133522 A CN 109133522A CN 201811107821 A CN201811107821 A CN 201811107821A CN 109133522 A CN109133522 A CN 109133522A
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- 239000002351 wastewater Substances 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
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- 239000000945 filler Substances 0.000 claims description 24
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- 239000010802 sludge Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 16
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 14
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- 238000005859 coupling reaction Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 claims description 10
- 238000005325 percolation Methods 0.000 claims description 10
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
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- 238000011049 filling Methods 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000000523 sample Substances 0.000 claims description 5
- 238000005276 aerator Methods 0.000 claims description 4
- 206010021143 Hypoxia Diseases 0.000 claims description 3
- 230000007954 hypoxia Effects 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 2
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- 239000011790 ferrous sulphate Substances 0.000 claims description 2
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 2
- 230000002045 lasting effect Effects 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000005660 chlorination reaction Methods 0.000 claims 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims 1
- 238000004062 sedimentation Methods 0.000 abstract description 13
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 26
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 12
- 229910052742 iron Inorganic materials 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000011109 contamination Methods 0.000 description 6
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- NGVBVEYMZVZLDQ-UHFFFAOYSA-N [C].[C].[Fe] Chemical compound [C].[C].[Fe] NGVBVEYMZVZLDQ-UHFFFAOYSA-N 0.000 description 3
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- 238000005345 coagulation Methods 0.000 description 3
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000012028 Fenton's reagent Substances 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
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- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
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- 238000002161 passivation Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
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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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F1/46114—Electrodes in particulate form or with conductive and/or non conductive particles between them
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- 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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- 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
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
-
- 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
- C02F3/302—Nitrification and denitrification treatment
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)
Abstract
The invention discloses a kind of garbage leachate treatment process System and method fors, take following processing step: (1) landfill leachate carries out water quality homogenizing from conditioning tank is flowed into conditioning tank；(2) conditioning tank waste water is from inflow coagulative precipitation tank；(3) coagulating sedimentation water outlet carries out oxidation reaction to the organic pollutant in waste water from three-dimensional electrolysis pond is flowed into；(4) pH value of waste water is adjusted to 6.8~7.2, is allowed to be suitble to biochemical treatment, then waste water flows into A/O biochemical system certainly；(5) three-dimensional electrolysis is set after biochemical system as advanced treating measure.Water outlet indices after ultraviolet disinfection can guarantee up to standard to discharge standard.The present invention have it is efficient, economical, be easy to the advantages that operational management.
Description
Technical field
The present invention relates to a kind of garbage leachate treatment process system and method, belong to leachate treatment technology field.
Background technique
The quantity cumulative year after year of China's townm refuse, if without properly disposing, it is likely that can have the hidden of garbage-surrounded city
Suffer from.The mode of refuse disposal at present has landfill, compost and burning etc., wherein landfill is the major way of China's garbage disposal.Rubbish
The percolate of rubbish landfill yard is the main pollution that landfill yard generates, mainly from following three aspects: (1) nature in landfill yard
Rainfall and runoff；(2) rubbish itself is original aqueous；(3) due to the moisture of the anaerobic fermentation generation of microorganism.
Landfill leachate is a kind of high concentrated organic wastewater of complicated component, wherein containing carcinogenic substance, promoting cancer object, auxiliary carcinogenic
More than 20 kinds of hazardous contaminants on the organic matters such as the phenyl ring of object and priority pollutant " blacklist ", moisture are multiple
Miscellaneous, the fluctuation of water quality and water is big, therefore, properly handles the percolate generated during garbage loading embeading, eliminates rubbish and seep
Influence of the filtrate to environment is to prevent the most important measure of secondary pollution.
The more Landfill Leachate processing technique of engineer application has " pretreatment+MBR+ nanofiltration/reverse osmosis at present
Thoroughly " or " pretreatment+two-stage DTRO " etc., but there are inevitable defects for membrane technology, can all generate the concentrate of film, to
Qualified discharge, it is still necessary to further handle, this will will increase financial burden.With the increase of landfill time, landfill leachate
Water quality situation have very big difference in early stage, mid-term, advanced stage, therefore use individual materialization or the more difficult satisfaction of biochemical technology
Discharge standard.
With the construction of refuse landfill, leachate treatment technology is also constantly being explored and is being developed, and seeks a kind of economic conjunction
Reason, the technique for adapting to China's landfill leachate treatment send out the technology for meeting national emission standard and promotion China's refuse landfill
Exhibition has great importance.
Summary of the invention
In view of the deficiencies of the prior art, a kind of garbage leachate treatment process System and method for, this method economy, height are provided
It imitates and the landfill leachate of different phase can be effectively treated and can stably reach discharge standard.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of method for treating garbage percolation liquid of the present invention, includes the following steps:
(1), first landfill leachate is pre-processed, regulating pondage, water quality；Obtain pretreated waste water；
(2), the pH value in pretreated waste water is adjusted to 5.0-6.0, coagulant hybrid reaction is then added, obtain coagulation
Handle waste water；
(3), three-diemsnional electrode-electricity fenton coupling processing is carried out under the auxiliary of ultrasound to coagulating treatment waste water to be electrolysed
Waste water, the three-diemsnional electrode Anodic use stainless steel plate, and cathode uses graphite plate, and filler is iron carbon particle；
(4), the pH of electrolysis wastewater is adjusted to 6.8~7.2, then carries out A/O biochemical treatment, it is useless to obtain biochemical treatment
Water,
(5), biochemical treatment waste water is further aoxidized through three-dimensional electrolysis, ultraviolet disinfection obtains processing water outlet.
In the present invention, the COD value of handled landfill leachate is 2000-12000mg/L；NH3- N value is 200-
5000mg/L。
Preferred scheme, in the step 1, landfill leachate is pre-processed in conditioning tank, is adjusted by liquidometer
Water of the landfill leachate in conditioning tank is 0-60L/h.
Landfill leachate in conditioning tank in the step 1, is uniformly mixed by stirring, adjusts water by preferred scheme
Matter.By the way that landfill leachate after mixing, may be implemented to water quality homogenizing.
Preferred scheme, coagulant forming by organic coagulants and inorganic coagulant in the step 2, wherein organic mixed
Solidifying agent is polyacrylamide, inorganic coagulant in aluminium chloride, ferrous sulfate, aluminium polychloride, bodied ferric sulfate at least
It is a kind of.
In the inventive solutions, using organic coagulants polyacrylamide as flocculation aid, made with inorganic coagulant
More excellent coagulation effect can be obtained under the synergistic effect of organic and inorganic coagulant for coagulant.
Preferred scheme, in the step 2, mass concentration of the organic coagulants in pretreated waste water is 0.8-
1.2mg/L, mass concentration of the inorganic coagulant in pretreated waste water are 0.5-3.0g/L.
Preferred scheme, in the step 2, reaction time 30-45min；
Preferred scheme, in the step 3, three-diemsnional electrode-electricity fenton coupling processing voltage is between 10-30V, pole plate
Away from for 8cm-10cm.
In the present invention, the iron carbon particle can select the commercially available iron carbon through high-temperature process in the prior art
Grain.
Preferred scheme, in the iron carbon particle, iron carbon mass ratio are as follows: 2~3:1.
Preferred scheme carries out three-diemsnional electrode-electricity fenton coupling processing, institute in the step 3 under the auxiliary of ultrasound
The frequency for stating ultrasound is 20-25KHz, and ultrasonic power is 400-500W, and the ultrasonic time is 1-2h.
Iron content carbon can be further prevented by carrying out ultrasound in three-diemsnional electrode-electricity fenton coupling process
The oxide or hydroxide of particle surface, alleviate the passivation of iron, improve the adaptability of pH, therefore carrying out three-diemsnional electrode-electricity
Without carrying out pH adjusting in fenton coupling process.
Preferred scheme, in the step 3, in three-diemsnional electrode-electricity fenton coupling process, by being carried out in cathode
Aeration, in-situ preparation H2O2, the aeration quantity is 500-2000L/h.
In the technical solution of invention, using conventional existing iron carbon filler, in conjunction with ultrasonic wave added of the invention, and pass through
The mode of aeration is formed in situ, it can realizes the NH of landfill leachate3- N's and COD is greatly reduced, and can solve rubbish infiltration
The problem of filtrate effluent coloration, realizes the biodegradability of landfill leachate.Of the invention be processed into can be effectively controlled in this way
This.
Certainly it is the technique of three-diemsnional electrode due to of the present invention, if what is faced is highly difficult processing containing big
The waste water for measuring organic pollutant can then be further introduced into molysite, mantoquita etc. and reinforce light electrolysis, while be further introduced into TiO2/
Active carbon composite, TiO2Nanoparticle further reinforces three-diemsnional electrode-electricity fenton coupling processing as photochemical catalyst
The effect of process.
Preferred scheme first carries out hypoxia response, then carry out aerobic in the step 3 in A/O biochemical treatment treatment process
Reaction；The hypoxia response carries out in anoxic pond；The aerobic reaction carries out in aerobic tank, and compound nitre is added in aerobic tank
Change bacterium and MBBR filler, compound nitrifier mass concentration in electrolysis wastewater is 1-3g/L, the filling of the MBBR filler
Rate is the 30-50% of anoxic tankage；The material of the MBBR filler is polypropylene, and the aerobic tank is in biochemical treatment process
In, lasting to be aerated, aeration flow is 400-600L/h.
Preferred scheme, the step 2, step 3, the sludge settling generated in step 4 are transported to landfill yard after concentration.
Preferred scheme, in the step 5, anode used in three-dimensional electrolysis uses stainless steel plate, and cathode uses graphite plate, fills out
Material is iron carbon particle；The three-dimensional electrolysis applied voltage is 10-30V, pole plate spacing is 8cm-10cm；Iron carbon mass ratio be 2~
3:1。
A kind of garbage leachate treatment process system of the present invention, including to landfill leachate carry out pretreated conditioning tank,
Pretreated waste water is subjected to the coagulative precipitation tank of coagulating treatment, coagulating treatment waste water is carried out to three-diemsnional electrode-electricity fenton coupling
The three-dimensional electrolysis pond of processing carries out the A/O biochemistry pool of biochemical treatment to electrolysis wastewater, further aoxidizes to biochemical treatment waste water
Three-dimensional electrolysis slot；It further include the sludge concentration tank to sludge condensation,
The conditioning tank, coagulative precipitation tank, three-dimensional electrolysis pond, A/O biochemistry pool, three-dimensional electrolysis slot are sequentially connected；
The sludge concentration tank is connected with coagulative precipitation tank, three-dimensional electrolysis pond, A/O biochemistry pool, sedimentation basin simultaneously.
A kind of garbage leachate treatment process system of the present invention, the A/O biochemistry pool is by anoxic pond and aerobic tank, sedimentation basin
Composition.
A kind of garbage leachate treatment process system of the present invention, further includes multiple aerators, a part aeration dress
It sets and is connect with the inner sidewall of the aerobic tank, another part aerator and the three-dimensional electrolysis pool cathode side wall and bottom
It is connected.
A kind of garbage leachate treatment process system of the present invention, the three-dimensional electrolysis pond are equipped with ultrasonic system, ultrasonic probe
It is inserted into three-dimensional electrolysis pond underwater 30-40mm.
The above-mentioned method for treating garbage percolation liquid of the present invention utilizes garbage leachate treatment process system provided by the invention
System, (1) landfill leachate are pre-processed from conditioning tank is flowed into, and realize that water quality is equal by regulating pondage, water quality in conditioning tank
Change, and the COD and ammonia nitrogen for part of degrading；(2) pH value of waste water is first adjusted to by pretreated waste water from flowing into coagulative precipitation tank
5.0-6.0 is added coagulant and precipitates after mixing, can effectively remove COD, SS in percolate, heavy metal and coloration etc.；(3)
Coagulating treatment water carries out oxidation reaction from three-dimensional electrolysis pond is flowed into, to the organic pollutant in waste water.In three-dimensional electrolysis equipment
Filler is made of iron carbon particle, the Fe of generation2+With the H of addition2O2Fenton reagent is formed, the OH free radical of generation can will give up
Organic pollutant in water carries out redox.Hardly degraded organic substance and ammonia nitrogen are effectively degraded in waste water after reaction, together
When waste water biodegradability there has also been biggish raisings；(4) electrolysis wastewater pH value is adjusted to 7.0, is allowed to be suitble to biochemical treatment,
Then waste water is acted on, in waste water from A/O biochemical system is flowed by the reinforcing reduction for the biologic packing material being arranged in biochemical system
COD obtains fully degraded；And orient add high efficiency composition nitrifier, the ammonia nitrogen overwhelming majority in waste water be converted into nitrite or
Then nitrate makes nitrite or nitrate become nitrogen by anoxic denitrification effect, ammonia nitrogen, total nitrogen are effectively gone
It removes；(5) three-dimensional electrolysis is set after biochemical system as advanced treating measure.Sedimentation basin water outlet is pumped to the progress of three-dimensional electrolysis slot
Oxidation reaction, water outlet indices after ultraviolet disinfection can guarantee up to standard to discharge standard.Coagulating sedimentation, three-dimensional electrolysis and A/
The excess sludge that O biochemical system generates is collected into sludge concentration tank, is finally transporting back to landfill yard.Whole processing technology is basic
Do not generate secondary pollution.
Beneficial effects of the present invention:
The present invention using physico-chemical process cooperateed with biochemical method handle landfill leachate, initial landfill stage, percolate biodegradability compared with
It is good, biochemical method is paid the utmost attention to, because biochemical method is at low cost, treating capacity is big, but contains a large amount of hard-degraded substances and poison in percolate
Property substance, biochemical treatment water outlet still cannot be up to standard, need other techniques (such as physicochemical techniques) to its further locate；When landfill is more than
After 5 years, the biodegradability of percolate is deteriorated, and is considered as physico-chemical process.Because physico-chemical process is not changed by water quality and quantity, and is discharged steady
Is determined but physico-chemical process higher cost so generally as pre-treatment or aftertreatment technology.Cooperate biochemical method processing, pre-treating technology
The biodegradability of percolate can be improved.Aftertreatment technology can remove hard-degraded substance and toxicant in percolate.As it can be seen that being directed to
The effect of the water quality situation of different phase percolate, biochemical method and physico-chemical process Combined Treatment landfill leachate is preferable.Therefore this hair
Bright treatment process can be economical, efficient and the landfill leachate of different phase can be effectively treated and can stably reach discharge
Standard.
Technique of the invention can be used for the processing of landfill leachate, it can also be used to other hardly degraded organic substances, high ammonia nitrogen
The processing of waste water, and generation without secondary pollution.Precipitation process of coagulation can effectively remove part COD in landfill leachate, again
Metal ion, SS etc..Using iron carbon as filler, iron filings are can be used in iron in three-dimensional electrolysis pond, realize resource utilization, the Fe of generation2+
With the H of addition2O2Fenton reagent is formed, the organic pollutant in waste water can be carried out redox by the hydroxyl radical free radical of generation；
Vltrasonic device is introduced simultaneously and generates ultrasonic wave, and eliminating part, there are the oxide of iron carbon surface or hydroxide, alleviate the blunt of iron
Change, accelerate the degradation of hardly degraded organic substance and the removal of ammonia nitrogen, total nitrogen, mitigates the load of subsequent biochemical processing.This technique can be with
Discharge landfill leachate stably reaching standard.
After technique of the invention carries out coagulating treatment, first carries out three-dimensional electrolysis-Fenton pretreatment and not only increase percolate
The impact resistance of processing system entirety also improves the biodegradability of subsequent biochemical reaction；Three-dimensional electrolysis-Fenton deep oxidation
It solves the problems, such as effluent color dilution, lays the foundation for subsequent processing, improve stability up to standard, reliability；Meanwhile three-dimensional electricity
Solution, ultrasound and electric Fenton oxidation have synergistic effect, are conducive to the NH in landfill leachate3The removal of-N and COD；Simultaneously in anoxic
MBBR filler is added in pond/aerobic tank (A/O), is formed mud-film composite system, is strengthened the enrichment of microorganism, improve difficult drop
Solve the removal efficiency of organic matter and total nitrogen.
Simple process of the invention, although used is all conventional technological operation, by reasonably combination and
Some process details are improved, allow the present invention efficiently, low cost processing different phase landfill leachate.
Detailed description of the invention
Fig. 1 is a kind of flow chart of garbage leachate treatment process of the present invention.
Specific embodiment
Below with reference to embodiment and compares attached drawing the present invention is described in more detail.
As shown in Figure 1, landfill leachate process system of the invention, including successively repeatedly conditioning tank, coagulative precipitation tank,
Three-dimensional electrolysis pond, A/O biochemistry pool, sedimentation basin, three-dimensional electrolysis slot；Also wrap sludge concentration tank living, the sludge concentration tank simultaneously with
Coagulative precipitation tank, three-dimensional electrolysis pond, A/O biochemistry pool, sedimentation basin are connected.
Further, the processing method of landfill leachate of the invention wraps following several middle embodiments living:
Embodiment 1
(1) (COD value 10000, ammonia nitrogen value are 700) to pass through liquid in conditioning tank from conditioning tank is flowed into landfill leachate
Position meter control water 50L/h, is added agitating device and realizes water quality homogenizing, the COD and ammonia nitrogen of degradable part；
(2) pH value of waste water is first adjusted to 5.5 from flowing into coagulative precipitation tank by conditioning tank waste water, and coagulant is added and is
Aluminium polychloride, dosage 2.5g/L；Flocculation aid is polyacrylamide, and dosage 1.0mg/L sinks after mixing
It forms sediment；
(3) coagulating sedimentation water outlet carries out oxidation reaction to the organic pollutant in waste water from three-dimensional electrolysis pond is flowed into.It is three-dimensional
It is anode that electrode, which is with stainless steel, in electrolysis unit, and graphite is cathode, and the spacing between electrode is 10cm, voltage 12V.Iron carbon
Iron carbon mass ratio is 2:1 in filler.In addition, Vltrasonic device is added in three-dimensional electrolysis pond, ultrasonic probe is located at liquid level 35mm, function
Rate is 500W.
(4) water outlet of three-dimensional electrolysis pond enters A/O biochemical system by gravity flow, first flows into anoxic pond, then flow into from anoxic pond
Then aerobic tank flows into secondary settling tank from aerobic tank, enter sludge concentration tank in the sludge that secondary settling tank generates.Add in the aerobic tank of place
The biologic packing material entered is MBBR filler, and filling rate is the 40% of pool capacity, and the material of filler is polypropylene；The compound nitrification being added
Bacterium selects commercially available purchase, dosage 3g/L.
(5) three-dimensional electrolysis is set after biochemical system as advanced treating measure.Electrode is with not in three-dimensional electrolysis device
Rust steel is anode, and graphite is cathode, and the spacing between electrode is 10cm, voltage 12V.Iron carbon mass ratio is 2 in iron carbon filler:
1.Sedimentation basin water outlet is pumped to three-dimensional electrolysis slot and carries out oxidation reaction, and water outlet reaches " household refuse landfill sites after ultraviolet disinfection
Contamination control standard " (GB16889-2008) directly water outlet up to standard.
The processing result of 1 embodiment of table, 1 landfill leachate
Embodiment 2
(1) (COD value 5500, ammonia nitrogen value are 1000) to pass through liquid in conditioning tank from conditioning tank is flowed into landfill leachate
Position meter control water is 50L/h, and agitating device is added and realizes water quality homogenizing, the COD and ammonia nitrogen of degradable part；
(2) pH value of waste water is first adjusted to 5.5 from flowing into coagulative precipitation tank by conditioning tank waste water, and coagulant is added and is
Aluminium polychloride, dosage 2.0g/L；Flocculation aid is polyacrylamide, and dosage 0.8mg/L sinks after mixing
It forms sediment；
(3) coagulating sedimentation water outlet carries out oxidation reaction to the organic pollutant in waste water from three-dimensional electrolysis pond is flowed into.It is three-dimensional
It is anode that electrode, which is with stainless steel, in electrolysis unit, and graphite is cathode, and the spacing between electrode is 8cm, voltage 12V.Iron carbon
Iron carbon mass ratio is 3:1 in filler.In addition, Vltrasonic device is added in three-dimensional electrolysis pond, ultrasonic probe is located at liquid level 30mm, function
Rate is 400W.
(4) water outlet of three-dimensional electrolysis pond enters A/O biochemical system by gravity flow, first flows into anoxic pond, then flow into from anoxic pond
Then aerobic tank flows into secondary settling tank from aerobic tank, enter sludge concentration tank in the sludge that secondary settling tank generates.Add in the aerobic tank of place
The biologic packing material entered is MBBR filler, and filling rate is the 35% of pool capacity, and the material of filler is polypropylene；The compound nitrification being added
Bacterium selects commercially available purchase, dosage 2g/L.
(5) three-dimensional electrolysis is set after biochemical system as advanced treating measure.Electrode is with not in three-dimensional electrolysis device
Rust steel is anode, and graphite is cathode, and the spacing between electrode is 8cm, voltage 12V.Iron carbon mass ratio is 3 in iron carbon filler:
1.Sedimentation basin water outlet is pumped to three-dimensional electrolysis slot and carries out oxidation reaction, and water outlet reaches " household refuse landfill sites after ultraviolet disinfection
Contamination control standard " (GB16889-2008) directly water outlet up to standard.
The processing result of 2 embodiment of table, 2 landfill leachate
Embodiment 3
(1) (COD value 2850, ammonia nitrogen value are 1560) to pass through liquid in conditioning tank from conditioning tank is flowed into landfill leachate
Position meter control water is 50L/h, and agitating device is added and realizes water quality homogenizing, the COD and ammonia nitrogen of degradable part；
(2) pH value of waste water is first adjusted to 5.5 from flowing into coagulative precipitation tank by conditioning tank waste water, and coagulant is added and is
Aluminium polychloride, dosage 1.0g/L；Flocculation aid is polyacrylamide, and dosage 0.8mg/L sinks after mixing
It forms sediment；
(3) coagulating sedimentation water outlet carries out oxidation reaction to the organic pollutant in waste water from three-dimensional electrolysis pond is flowed into.It is three-dimensional
It is anode that electrode, which is with stainless steel, in electrolysis unit, and graphite is cathode, and the spacing between electrode is 8cm, voltage 10V.Iron carbon
Iron carbon mass ratio is 2:1 in filler.In addition, Vltrasonic device is added in three-dimensional electrolysis pond, ultrasonic probe is located at liquid level 40mm, function
Rate is 400W.
(4) water outlet of three-dimensional electrolysis pond enters A/O biochemical system by gravity flow, first flows into anoxic pond, then flow into from anoxic pond
Then aerobic tank flows into secondary settling tank from aerobic tank, enter sludge concentration tank in the sludge that secondary settling tank generates.Add in the aerobic tank of place
The biologic packing material entered is MBBR filler, and filling rate is the 30% of pool capacity, and the material of filler is polypropylene；The compound nitrification being added
Bacterium selects commercially available purchase, dosage 2g/L.
(5) three-dimensional electrolysis is set after biochemical system as advanced treating measure.Electrode is with not in three-dimensional electrolysis device
Rust steel is anode, and graphite is cathode, and the spacing between electrode is 8cm, voltage 10V.Iron carbon mass ratio is 2 in iron carbon filler:
1.Sedimentation basin water outlet is pumped to three-dimensional electrolysis slot and carries out oxidation reaction, and water outlet reaches " household refuse landfill sites after ultraviolet disinfection
Contamination control standard " (GB16889-2008) directly water outlet up to standard.
The processing result of 3 embodiment of table, 3 landfill leachate
Comparative example 1
The process conditions of the comparative example are same as Example 1, are only that the conditioning tank waste water that conditioning tank comes out first flows into three certainly
Electrolytic cell is tieed up, then the water outlet in three-dimensional electrolysis pond is again from inflow coagulative precipitation tank.
Through detecting, final outflow water is not up to " household refuse landfill sites contamination control standard " after ultraviolet disinfection
(GB16889-2008) directly water outlet up to standard.
The processing result of 4 comparative example of table, 1 landfill leachate
Comparative example 2
Other process conditions of the comparative example are same as Example 1, carried out at three-diemsnional electrode-electricity fenton coupling
During reason, ultrasound is not carried out.
Through detecting, final outflow water is not up to " household refuse landfill sites contamination control standard " after ultraviolet disinfection
(GB16889-2008) directly water outlet up to standard.
The processing result of 5 comparative example of table, 2 landfill leachate
Comparative example 3
Other process conditions of the comparative example are same as Example 1, are only pretreated waste waters (into giving up in coagulating basin
Water) in pH value be adjusted to 3.5；
Through detecting, final outflow water is not up to " household refuse landfill sites contamination control standard " after ultraviolet disinfection
(GB16889-2008) directly water outlet up to standard.
The processing result of 6 comparative example of table, 3 landfill leachate
Claims (10)
1. a kind of method for treating garbage percolation liquid, which comprises the steps of:
(1), first landfill leachate is pre-processed, regulating pondage, water quality；Obtain pretreated waste water；
(2), the pH value in pretreated waste water is adjusted to 5.0-6.0, coagulant hybrid reaction is then added, obtain coagulating treatment
Waste water；
(3), it is useless that three-diemsnional electrode-electricity fenton coupling processing acquisition electrolysis is carried out under the auxiliary of ultrasound to coagulating treatment waste water
Water, the three-diemsnional electrode Anodic use stainless steel plate, and cathode uses graphite plate, and filler is iron carbon particle；
(4), the pH of electrolysis wastewater is adjusted to 6.8~7.2, then carries out A/O biochemical treatment, obtain biochemical treatment waste water；
(5), biochemical treatment waste water is further aoxidized through three-dimensional electrolysis, ultraviolet disinfection obtains processing water outlet.
2. a kind of method for treating garbage percolation liquid according to claim 1, it is characterised in that: coagulant in the step 2
By forming for organic coagulants and inorganic coagulant, wherein organic coagulants are polyacrylamide, and inorganic coagulant is selected from chlorination
At least one of aluminium, ferrous sulfate, aluminium polychloride, bodied ferric sulfate.
3. a kind of method for treating garbage percolation liquid according to claim 2, it is characterised in that:
In the step 2, mass concentration of the organic coagulants in pretreated waste water is 0.8-1.2mg/L, described inorganic
Mass concentration of the coagulant in pretreated waste water is 0.5-3.0g/L；
In the step 2, reaction time 30-45min.
4. a kind of method for treating garbage percolation liquid according to claim 1, it is characterised in that:
In the step 3, three-diemsnional electrode-electricity fenton coupling processing voltage is 10-30V, pole plate spacing is 8cm-10cm；
In the iron carbon particle, iron carbon mass ratio are as follows: 2~3:1.
5. a kind of method for treating garbage percolation liquid according to claim 1 or 4, it is characterised in that:
Three-diemsnional electrode-electricity fenton coupling processing is carried out in the step 3 under the auxiliary of ultrasound, the frequency of the ultrasound is
20-25KHz, ultrasonic power are 400-500W, and the ultrasonic time is 1-2h.
6. a kind of method for treating garbage percolation liquid according to claim 1 or 4, it is characterised in that:
In the step 3, in three-diemsnional electrode-electricity fenton coupling process, by being aerated in cathode, in-situ preparation
H2O2, the aeration quantity is 500-2000L/h.
7. a kind of method for treating garbage percolation liquid according to claim 1, it is characterised in that:
In the step 3 in A/O biochemical treatment treatment process, hypoxia response is first carried out, then carry out aerobic reaction；The anoxic is anti-
It should be carried out in anoxic pond；The aerobic reaction carries out in aerobic tank, and compound nitrifier and MBBR filler are added in aerobic tank,
Compound nitrifier mass concentration in electrolysis wastewater is 1-3g/L, and the filling rate of the MBBR filler is anoxic tankage
30-50%；The material of the MBBR filler is polypropylene, and the aerobic tank is lasting to be aerated during biochemical treatment, aeration stream
Amount is 400-600L/h.
8. a kind of process system of method for treating garbage percolation liquid, it is characterised in that: including being pre-processed to landfill leachate
Conditioning tank, by pretreated waste water carry out coagulating treatment coagulative precipitation tank, by coagulating treatment waste water carry out three-diemsnional electrode-electricity
The three-dimensional electrolysis pond of fenton coupling processing, to electrolysis wastewater carry out biochemical treatment A/O biochemistry pool, to biochemical treatment waste water into
The three-dimensional electrolysis slot of one step oxidation；It further include the sludge concentration tank to sludge condensation,
The conditioning tank, coagulative precipitation tank, three-dimensional electrolysis pond, A/O biochemistry pool, three-dimensional electrolysis slot are sequentially connected；
The sludge concentration tank is connected with coagulative precipitation tank, three-dimensional electrolysis pond, A/O biochemistry pool simultaneously.
9. a kind of garbage leachate treatment process system according to claim 8, which is characterized in that further include multiple aerations
Device, a part of aerator are connect with the inner sidewall of the aerobic tank, another part aerator and described three
Dimension cathode of electrolytic tank side wall is connected with bottom.
10. a kind of garbage leachate treatment process system according to claim 8, which is characterized in that the three-dimensional electrolysis
Pond is equipped with ultrasonic system, and ultrasonic probe is inserted into three-dimensional electrolysis pond underwater 30-40mm.
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| CN110040839A (en) * | 2019-05-08 | 2019-07-23 | 赵佳妮 | Handle the composition and preparation method thereof of fruits and vegetables rubbish |
| CN110642480A (en) * | 2019-11-01 | 2020-01-03 | 广东威特雅环境科技有限公司 | Method and system for treating landfill leachate |
| CN110697977A (en) * | 2019-10-09 | 2020-01-17 | 湖南润万环保科技有限公司 | Treatment process of landfill closure leachate |
| CN110697976A (en) * | 2019-10-09 | 2020-01-17 | 桂润环境科技股份有限公司 | Treatment method of percolate concentrated solution of household garbage landfill |
| CN111003894A (en) * | 2019-12-25 | 2020-04-14 | 广州市环境保护工程设计院有限公司 | Compound landfill leachate processing system |
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| CN112374663A (en) * | 2020-09-24 | 2021-02-19 | 中国科学院过程工程研究所 | System and method for treating organic wastewater by three-dimensional electrocatalytic oxidation of liquid-solid fluidized bed |
| CN112374663B (en) * | 2020-09-24 | 2022-01-18 | 中国科学院过程工程研究所 | System and method for treating organic wastewater by three-dimensional electrocatalytic oxidation of liquid-solid fluidized bed |
| CN113620519A (en) * | 2021-08-09 | 2021-11-09 | 中国电建集团贵阳勘测设计研究院有限公司 | Method for treating, purifying and recycling garbage penetrating fluid wastewater by biological microalgae |
| CN115231774A (en) * | 2022-07-26 | 2022-10-25 | 苏州科技大学 | Treatment method and system for aged landfill leachate |
| CN116022960A (en) * | 2022-12-30 | 2023-04-28 | 安徽蓝鼎环保能源科技有限公司 | Microporous aeration-based full-quantification zero-emission treatment process for landfill leachate |
| CN116022960B (en) * | 2022-12-30 | 2024-01-09 | 安徽蓝鼎环保能源科技有限公司 | Microporous aeration-based full-quantification zero-emission treatment process for landfill leachate |
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Application publication date: 20190104 |