CN107840444A - A kind of processing unit of garbage leachate - Google Patents

A kind of processing unit of garbage leachate Download PDF

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Publication number
CN107840444A
CN107840444A CN201711309477.8A CN201711309477A CN107840444A CN 107840444 A CN107840444 A CN 107840444A CN 201711309477 A CN201711309477 A CN 201711309477A CN 107840444 A CN107840444 A CN 107840444A
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reactor
water
water side
inlet end
water inlet
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高严
田丽森
赵永志
赵金
聂宜文
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China ENFI Engineering Corp
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China ENFI Engineering Corp
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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
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/005—Combined electrochemical biological 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
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment
    • C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
    • 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
    • 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
    • C02F2209/02—Temperature
    • 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
    • C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • 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
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/16—Total nitrogen (tkN-N)
    • 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
    • C02F2209/22—O2
    • 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
    • C02F2209/40—Liquid flow rate
    • 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
    • C02F2209/44—Time
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/046—Recirculation with an external loop
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/10—Energy recovery

Abstract

The invention provides a kind of processing unit of garbage leachate, the device is sequentially connected in series and formed by four microorganism electrolysis cell reactor, anoxic denitrification reactor, short distance nitration reactor and anaerobic ammonia oxidation reactor processing units by pipeline：Microorganism electrolysis cell reactor is provided with garbage leachate water inlet end and water side, and the water side of microorganism electrolysis cell reactor is connected with anoxic denitrification reactor water inlet end；The water side of anoxic denitrification reactor is connected with the water inlet end of short distance nitration reactor；The water side of short distance nitration reactor is connected with the water inlet end of anaerobic ammonia oxidation reactor, and the water side of anaerobic ammonia oxidation reactor is connected with outer row's mouth or subordinate's processing unit.The processing unit can efficiently remove the organic pollution and efficient denitrification of garbage leachate, make the garbage leachate after processing can be with stably reaching standard.In addition, using the device of the present invention during garbage leachate is handled, additionally it is possible to save the processing cost of operation energy consumption and later stage sludge.

Description

A kind of processing unit of garbage leachate
Technical field
The present invention relates to a kind of processing unit of garbage leachate, suitable for garbage leachate processing, belongs to high-concentration waste Water treatment field.
Background technology
In recent years, the annual generation in city is with 8%~10% speed sharp increase.Traditional house refuse Processing approach mainly has two kinds, garbage loading embeading or burning electricity generation.Heap ferment before garbage loading embeading or burning can all produce a large amount of rubbish Rubbish Leachate site.Due to house refuse complicated components, moisture content fluctuation is larger, while the environmental condition (heap during rubbish heap ferment Ferment temperature, heap ferment time, air humidity, precipitation.Regional condition etc.) there is uncertainty, therefore garbage incinerating power plant oozes drip Liquid complicated components, organic pollutant category is more, and excursion is big, in addition rainfall, rubbish pit temperature, time of stacking garbage etc. Factor also influences the composition of percolate, therefore percolate COD concentration has the complexity of short-term fluctuation and change in long term.It is overall For, garbage leachate has the characteristics that high chemical oxygen demand (COD), high ammonia nitrogen, high salinity, nutrition are unbalanced, belongs to difficulty Manage high-concentration waste water.
At present, the handling process of garbage leachate typically uses " pretreatment+anaerobic digestion+Aerobic Process for Treatment+advanced treating " Deng Physiochemical and biochemical group technology.Although these group technologies achieve good treatment effect, there are still some to need Improvements：Such as anaerobic stages hardly degraded organic substance clearance is relatively low, denitrification effect is influenceed into subsequent technique；The anti-nitre of anoxic The change stage needs additional carbon to ensure effectively to remove nitrate nitrogen；Aerobic nitrogen removal technique needs largely to be aerated, and energy consumption is higher etc.；
As can be seen here, lifting process treatment effect, reduce process operation energy consumption and have great importance.Microorganism electrolysis cell Technology (Microbial Electrolysis Cell, MEC) be the one kind developed rapidly in recent years merged sewage disposal and Produce the new technology of the energy, its using microorganism as reactive agent, in negative and positive interpolar application electric current, by anode last layer by Organic matter in the microbial film metabolism sewage that anaerobism electricity-producing microorganism is formed produces hydrogen or methane, so as to enter to sewage Various forms of energy are obtained while row biological treatment.The technology can be with reinforced anaerobic reactor in waste incineration leachate The degradation effect of organic pollution, it can significantly strengthen the removal effect of hardly degraded organic substance in Leachate site.
Short distance nitration-anaerobic ammoxidation technique (Sharon-Anammox) is a kind of the efficient of suitable high ammonia nitrogen low-carbon waste water Denitrification process, it includes two bioprocess, first by waste water about 50% ammonia nitrogen in aerobic short distance nitration reactor It is oxidized to cultured water, subsequent anaerobic ammonia oxidizing bacteria is electron acceptor and ammonia nitrogen as straight using cultured water under anaerobic Electron donor reaction generation nitrogen is connect, reaches the whole process autotrophic denitrification of ammonia nitrogen in waste water.It can be seen that Sharon-Anammox techniques are not Additional carbon is needed to can reach the purpose of denitrogenation, and nitrogen removal rate is high, oxygen demand is few.But the technique can not remove organic Thing, and Organic Matters on Nitrification and anaerobic ammonium oxidation process can produce certain influence.In addition, current Anammox The research of technology is concentrated mainly in the processing of high temperature high ammonia-nitrogen wastewater with application, and the municipal sewage based on Anammox technology is same The device and technique of step denitrogenation and removal organic polluter are rarely reported.
It is, therefore, desirable to provide a kind of new garbage percolation liquid processing device, it, which can reach, efficiently removes removal organic polluter While with efficient denitrification, additionally it is possible to save the processing cost of operation energy consumption and later stage sludge.
The content of the invention
The purpose of the present invention is complex characteristics and the deficiencies in the prior art part for garbage leachate, there is provided a kind of rubbish The processing unit of rubbish Leachate site, efficiently remove removal organic polluter reaching and while with efficient denitrification, cost can be saved, increase Add production capacity and reduce energy consumption.Device provided by the present invention, garbage leachate COD clearances can be achieved more than 95%, ammonia nitrogen Clearance 100%, nitrogen removal rate is more than 90%.
The purpose of the present invention solves by the following technical programs：A kind of processing unit of garbage leachate, the dress Put by pipeline by microorganism electrolysis cell reactor 1, anoxic denitrification reactor 2, short distance nitration reactor 3 and Anammox 4 four processing units of reactor, which are sequentially connected in series, to be formed：
Microorganism electrolysis cell reactor 1 is provided with garbage leachate water inlet end 1a and water side 1b, the microorganism electrolysis cell The water side 1b of reactor 1 is connected with the water inlet end 2a of anoxic denitrification reactor 2；The water side 2b of anoxic denitrification reactor 2 It is connected with the water inlet end 3a of short distance nitration reactor 3；The water side 3b of short distance nitration reactor 3 and anaerobic ammonia oxidation reactor 4 Water inlet end 4a be connected, the anaerobic ammonia oxidation reactor 4 is additionally provided with a water side 4b.
Further, the anoxic denitrification reactor 2 is provided with a water side 2c, the water side 2c and anaerobism ammonia oxygen The water inlet end 4a for changing reactor 4 is connected.
Further, an intermediate water tank 5 is additionally provided with, one end of the intermediate water tank 5 is reacted with anoxic denitrification respectively The water side 2c of device 2 is connected with the water side 3b of short distance nitration reactor 3, the water inlet of the other end and anaerobic ammonia oxidation reactor 4 End 4a is connected.
Further, the anaerobic ammonia oxidation reactor 4 is provided with a water side 4c and return duct 6, the return duct 6 One end is connected with water side 4c, and the other end is connected with the water inlet end 2a of the anoxic denitrification reactor 2.
Further, between the water side 1b and the water inlet end 2a or the water side 2b and the water inlet end 3a it Between intermediate water tank is set.
Further, a return duct 7, the backflow are provided with the water side 1b of the microorganism electrolysis cell reactor 1 One end of pipe 7 is connected with water side 1b, and the other end is connected with the water inlet end 1a of microorganism electrolysis cell reactor 1.
Further, one pretreatment water tank of water inlet end 1a connections of the microorganism electrolysis cell reactor 1.
Further, water inlet water pump is provided with 1 water inlet end 1a of the microorganism electrolysis cell reactor.
Further, the water inlet end 2a, the water side 2b, water side 2c, the water side 3b, the water side 4b And one or more of the water side 4c are provided with water valve and flowmeter.
Garbage percolation liquid processing device provided by the present invention, its operation principle are：
In anaerobic stages, on the one hand microorganism electrolysis cell reactor can participate in the thin of inter-species electron transmission by enrichment The microorganisms such as bacterium, ancient bacterium improve the biological community structure of inside reactor, on the one hand by improving inter-species electron transport rate Promote the bioelectrochemistry reaction of anaerobic nitrification process so that garbage leachate in microorganism electrolysis cell reactor by micro- Bioelectrochemistry reaction is potent to remove removal organic polluter, improves COD clearances；In the Anoxic/Aerobic stage, microorganism electrolysis cell is anti- After answering device water outlet, it can further remove removal organic polluter into anoxic denitrification reactor and remove nitrate nitrogen.Short distance nitration and Anaerobic ammonia oxidation reactor continues to denitrogenate on the basis of anoxic denitrification reactor, passes through Anammox under anaerobic The effect of bacterium, using cultured water as electron acceptor, ammonia nitrogen is electron donor, and cultured water and ammonia nitrogen are converted into N simultaneously2.Its Technical process not only more traditional denitrification process save about 50% aeration quantity, so as to reduce energy consumption, it is not necessary to additional carbon. In addition, nitrate nitrogen ratio is relatively low in anaerobic ammonia oxidation reactor water outlet, during backflow, anoxic denitrification stage nitre can be effectively reduced State nitrogen content, so as to reduce demand of the anoxic denitrification to carbon source.
From above-mentioned principle, the beneficial effects of the present invention are：
Efficiently remove removal organic polluter：Microorganism electrolysis cell reactor is by improving biological community structure and strengthening micro- life Thing electrochemical reaction, the efficient process to garbage leachate organic pollution can be realized；
Increase production capacity, reduce energy consumption：Microorganism electrolysis cell reactor can promote methane phase process, lifting methane production and Methane production；Anammox and short distance nitration do not need additional carbon, while reduce energy consumption caused by aeration；Anammox Nitrate nitrogen ratio is relatively low in reactor water outlet, anoxic denitrification stage nitrate nitrogen content can be effectively reduced, so as to reduce anoxic Demand of the denitrification to carbon source.
Reduce cost：The ammonia nitrogen loading that short distance nitration and Anammox are born is higher, can reduce process scale, reduces Capital construction cost；Sludge is slow-growing in nitrosation and anaerobic ammonia oxidation reactor, and surplus sludge volume is few, so as to reduce later stage sludge Processing cost.
Brief description of the drawings
Fig. 1 is the garbage percolation liquid processing device schematic diagram of one embodiment of the present invention；
Fig. 2 is removal effect contrast curve of Fig. 1 devices with control reactor to COD.
Wherein, description of reference numerals is as follows：
1：Microorganism electrolysis cell reactor；
1a：The water inlet end of microorganism electrolysis cell reactor；
1b：The water side of microorganism electrolysis cell reactor；
2：Anoxic denitrification reactor；
2a：The water inlet end of anoxic denitrification reactor；
2b：The water side of anoxic denitrification reactor；
2c：The water side of anoxic denitrification reactor；
3：Short distance nitration reactor；
3a：The water inlet end of short distance nitration reactor；
3b：The water side of short distance nitration reactor；
4：Anaerobic ammonia oxidation reactor；
4a：The water inlet end of anaerobic ammonia oxidation reactor；
4b：The water side of anaerobic ammonia oxidation reactor；
4c：The water side of anaerobic ammonia oxidation reactor；
5：Intermediate water tank；
6、7：Return duct；
Embodiment
Waste incineration leachate used in the application embodiment comes from Beijing's waste incineration and generating electricity Factory, the following COD of its water quality index：40240-80480mg/L, BOD5：22870-50350mg/L, NH4 +-N：1042–1395mg/ L, TN：1330-2179mg/L, SS：8000–10000mg/L.
Wherein, the COD (COD) is chemically to measure in water sample to need oxidized reducing substances Amount, reflect in water by reducing substances pollute degree, can as a composite target of organic substance relative amount, Its numerical value shows that more greatly the pollution condition of water body is more serious；Biochemical oxygen demand (BOD) (the BOD5) refer generally to five days it is biochemical aerobic Amount, it is a kind of to act on consumed dissolved oxygen content come secondary indication water body by one of Organic Pollution degree with microbial metabolism Important indicator.Ammonia nitrogen (the NH4 +- N) refer in the aqueous solution with ion ammonia (NH4+) nitrogen existing for form.Ammonia nitrogen is in water body Nutrient, water eutrophication phenomenon can be caused to produce, be the main oxygen consumption pollutant in water body, to fish and some aquatiles It is toxic；The total nitrogen (TN) refers in water that various forms are inorganic and the total amount of organic nitrogen, including NO3-、NO2-And NH4+Etc. inorganic The organic nitrogens such as nitrogen and protein, amino acid and organic amine, calculated with the nitrogenous milligram number of every liter of water, be often used to represent water body and sought Support the degree of Substances Pollution.The suspension (SS) refers to be suspended in the solid matter in water, including insoluble in water inorganic Thing, organic matter and silt particle, clay, microorganism etc..
The present invention is further illustrated below by specific embodiment.
As shown in figure 1, for a kind of garbage percolation liquid processing device of the present invention, the device is by pipeline successively by microorganism Electrolytic cell reactor 1, anoxic denitrification reactor 2, short distance nitration reactor 3 and anaerobic ammonia oxidation reactor 4 are in series：
Microorganism electrolysis cell reactor 1 is provided with garbage leachate water inlet end 1a and water side 1b, microorganism electrolysis cell reaction The water side 1b of device 1 is connected with the water inlet end 2a of anoxic denitrification reactor 2；The water side 2b of anoxic denitrification reactor 2 with it is short The water inlet end 3a of journey nitrator 3 is connected；The water side 3b of short distance nitration reactor 3 and entering for anaerobic ammonia oxidation reactor 4 Water end (W.E.) 4a is connected, and anaerobic ammonia oxidation reactor 4 is additionally provided with a water side 4b.Anoxic denitrification reactor 2 is provided with a water outlet 2c, water side 2c is held to be connected with the water inlet end 4a of anaerobic ammonia oxidation reactor 4.The device is also provided with an intermediate water tank 5, Its one end is connected with the water side 2c of anoxic denitrification reactor 2 and the water side 3b of short distance nitration reactor 3 respectively, the other end It is connected with the water inlet end 4a of anaerobic ammonia oxidation reactor 4.Anaerobic ammonia oxidation reactor 4 is provided with a water side 4c and return duct 6, One end of return duct 6 is connected with water side 4c, and the other end is connected with the water inlet end 2a of anoxic denitrification reactor 2.Water side 1b Intermediate water tank is set between the water inlet end 2a or between water side 2b and water inlet end 3a.Microorganism electrolysis cell reactor 1 A return duct 7 is provided with the 1b of water side, one end of return duct 7 is connected with water side 1b, and the other end is anti-with microorganism electrolysis cell The water inlet end 1a of device 1 is answered to be connected.It is also provided with the water inlet end 1a of the 1 of microorganism electrolysis cell reactor into water water pump.Water inlet One or more of end 2a, water side 2b, water side 2c, water side 3b, water side 4b and water side 4c are also provided with water Valve and flowmeter.
Carrying out practically operation is as follows：
The water inlet of microorganism electrolysis cell reactor can be set or be not provided with preposition pretreating process according to actual conditions.Its In, the pretreating process generally comprises temperature adjustment, water quality and quantity regulation, preaeration and removes the bulky grain to be suspended in waste water Polluter (including oil substances) etc., the equipment being related to mainly have grid maker, Oil and slag scraping machine, regulating reservoir, setting pot, just Heavy pond etc..When garbage leachate needs to be pre-processed, one can be set at the water inlet end 1a of microorganism electrolysis cell reactor 1 Individual water inlet water pump, pretreated stoste are stored in pretreatment water tank, are entered in a subtle way by being located at the water inlet water pump at water inlet end 1a Biological electrolytic cell reactor 1.Garbage leachate is intake from the water inlet end 1a of microorganism electrolysis cell reactor 1, passes through water side 1b Water outlet.
Garbage leachate stoste carries out the processing of organic pollution in microorganism electrolysis cell reactor 1：Set microorganism The hydraulic detention time of electrolytic cell reactor 1 is 3d~7d, 30~37 DEG C of running temperature, DC constant voltage power supply provides 0.5~ 0.9V potential.Born using the operation of the method lifting microorganism electrolysis cell reactor 1 of gradient lifting Leachate site inlet COD concentration Lotus, make it in 25~30kg COD/ (m3D) normal operation is remained able under the processing load more than.
When removing more than 80% COD by the liquid of microorganism electrolysis cell reactor 1, liquid after processing is from water outlet End 1b is discharged and is entered anoxic denitrification reactor 2 through water inlet end 2a.A valve and flowmeter can be set at water inlet end 2a, According to the actual requirements, the water inlet of anoxic denitrification reactor 2 is controlled by the valve and flowmeter, and selection is all or part of Into anoxic denitrification reactor 2, remainder is back to microorganism electrolysis by the return duct 7 being arranged at the 1b of water side The water inlet end 1a of pond reactor 1.
In the anoxic denitrification stage, the hydraulic detention time of anoxic denitrification reactor 2 is set as 3d~7d, reaction temperature For 25~30 DEG C, dissolved oxygen is in 0.2~0.5mg/L.At this stage, denitrifying bacteria under anoxic conditions, further removes organic Pollutant simultaneously reduces nitrate nitrogen.Anoxic denitrification reactor 2 is respectively equipped with a water side 2b and water side 2c, the water side 2b is connected with the water inlet end 3a of short distance nitration reactor 3, the water side 2c and anaerobic ammonia oxidation reactor 4 water inlet end 4a phases Even.Be also provided with an intermediate water tank 5 in the present apparatus, one end of the intermediate water tank 5 respectively with water side 2c and water outlet End 3b is connected, and the other end is connected with water inlet end 4a.A part of water outlet of anoxic denitrification reactor 2 can enter the intermediate water tank 5 Enter anaerobic ammonia oxidation reactor 4 together with after the water outlet mixing of short distance nitration reactor 3.In anoxic denitrification reactor 2 Valve and flowmeter can be set respectively at water side 2b and 2c, and the 60~80% of the water yield of control anoxic denitrification reactor 2 enter Enter in short distance nitration reactor 3, residue 20~40% enters intermediate water tank 5.
In the short distance nitration stage, the hydraulic detention time of short distance nitration reactor 3 is set as 1d~3d, reaction temperature 22 ~27 DEG C, dissolved oxygen is in 0.5~3.0mg/L.About 50% ammonia nitrogen is oxidized in aerobic short distance nitration reactor in waste water Cultured water, water outlet (including the cultured water of generation and the complete ammonia nitrogen of unreacted, its ratio of subsequent short distance nitration reactor 3 About 1:1) enter intermediate water tank 5 through water side 3b or directly enter anaerobic ammonia oxidation reactor 4 through water inlet end 4a.In anaerobism ammonia Oxidation stage, the hydraulic detention time of anaerobic ammonia oxidation reactor 4 is 2d~7d, and reaction temperature is 32~37 DEG C.Anaerobism ammonia oxygen Change bacterium under anaerobic, react generation nitrogen as direct electron donor by electron acceptor and ammonia nitrogen of cultured water, realize The whole process autotrophic denitrification of ammonia nitrogen in waste water.The anaerobic ammonia oxidation reactor 4 be respectively equipped with water side 4b, water side 4c and with Return duct 7 connected water side 4c, by being arranged on water side 4b and water side 4c valve and flowmeter, it can control anaerobism ammonia Oxidation water outlet 70~85% is back to the water inlet end 2a of anoxic denitrification reactor 2 through return duct 7, and remainder passes through water side 4b discharges as water outlet.
As shown in Fig. 2 (it is purchased from upflow anaerobic sludge blanket process (UASB)：Beijing Yingherui Environmental Engineering Co., Ltd.) make For control reactor, removal effect of the contrast apparatus of the present invention with control reactor to COD, the results showed that, apparatus of the present invention pair The effect of sewage disposal is more preferable, and after stable operation (about 1-2 weeks), COD clearances are more than 95%, ammonia nitrogen removal frank 100%, Nitrogen removal rate is more than 90%.Biogas yield is also bigger than the biogas yield of control reactor.
" microorganism electrolysis cell reactor " of the present invention, refer to react promotion anaerobic reaction by bioelectrochemistry, and Recovered energy the anaerobic reaction generator of material and valuable product in the form of hydrogen, methane, ethanol and hydrogen peroxide etc.. In above-described embodiment, by installing the electrode of different materials additional to the microorganism electrolysis cell reactor, in the effect of applying electrical potential Under, hydrogen-producing speed is on the one hand lifted, and hydrogen can be as the electron donor of methanogen, on the other hand, fermented type bacterium and production Methane backeria is enriched with system, therefore will all promote the generation of methane.
In the above-described embodiments, described " anaerobic ammonia oxidation reactor " is generally pond type and tank structure, and volume can lead to Ammonia nitrogen removal calculating is crossed, its function is under anaerobic, the conversion of nitrite nitrogen to nitrogen, to realize total in final Leachate site Nitrogen removes.Described " anoxic denitrification reactor " and " short distance nitration reactor " and nitration denitrification of the prior art react Device design considerations is identical, and difference is shorter residence time, and pond, which holds, to be reduced.Dissolved oxygen is controlled after stable operation in Practical Project Between 1~2mg/l.
What the sewage drainage standard referenced by the present invention was implemented on the 1st for August in 2016《Sewage is discharged into town sewer water quality Standard》(GB/T31962-2015), reuse standard have different requirements according to different reuse positions, such as：《Municipal sewage is again Make profits and use industry water standard》Open recirling cooling water system moisturizing in GB/T19923-2005.In addition, according to area not Together, the standard of sewage effluent also has difference.The device of the present invention can be according to different discharge standards on the basis of above-described embodiment On changed and reequiped.
Above embodiment illustrate the main processing units and design principle of apparatus of the present invention, but Inlet and outlet water mode, return The setting of stream setting, valve and flowmeter etc. is not limited to described above；According to the reality of processing garbage leachate agent set Situation can set or be not provided with preposition pretreating process and successive depths handling process.In addition, this method is applicable but is not limited to The processing of garbage leachate, it may also be used for the processing of high concentrated organic wastewater.
The present invention is not limited to above example, the scope that above-described embodiment is not limit the invention in any way.Ability The some changes and adjustment that field technique personnel are made within the scope of the claims also are regarded as belonging to the scope of the present invention.

Claims (10)

1. a kind of processing unit of garbage leachate, it is characterised in that described device is reacted by pipeline by microorganism electrolysis cell (4) four device (1), anoxic denitrification reactor (2), short distance nitration reactor (3) and anaerobic ammonia oxidation reactor processing units It is sequentially connected in series and forms：
Microorganism electrolysis cell reactor (1) is provided with garbage leachate water inlet end (1a) and water side (1b), the microorganism electrolysis The water side (1b) of pond reactor (1) is connected with anoxic denitrification reactor (2) water inlet end (2a)；Anoxic denitrification reactor (2) water side (2b) is connected with the water inlet end (3a) of short distance nitration reactor (3)；The water side of short distance nitration reactor (3) (3b) is connected with the water inlet end (4a) of anaerobic ammonia oxidation reactor (4), and the anaerobic ammonia oxidation reactor (4) is additionally provided with one and gone out Water end (W.E.) (4b).
2. the processing unit of garbage leachate as claimed in claim 1, it is characterised in that the anoxic denitrification reactor (2) water side (2c) is provided with, the water side (2c) is connected with the water inlet end (4a) of anaerobic ammonia oxidation reactor (4).
3. the processing unit of garbage leachate as claimed in claim 2, it is characterised in that an intermediate water tank (5) is additionally provided with, One end of the intermediate water tank (5) water side (2c) with anoxic denitrification reactor (2) and short distance nitration reactor (3) respectively Water side (3b) be connected, the other end is connected with the water inlet end (4a) of anaerobic ammonia oxidation reactor (4).
4. the processing unit of the garbage leachate as described in claim 1-3 is any, it is characterised in that the Anammox is anti- Device (4) is answered to be provided with a water side (4c) and return duct (6), one end of the return duct (6) is connected with water side (4c), another End is connected with the water inlet end (2a) of the anoxic denitrification reactor (2).
5. the processing unit of the garbage leachate as described in claim 1-3 is any, it is characterised in that the water side (1b) with Intermediate water tank is set between the water inlet end (2a) or between the water side (2b) and the water inlet end (3a).
6. the processing unit of the garbage leachate as described in claim 1-3 is any, it is characterised in that the microorganism electrolysis cell Water side (1b) place of reactor (1) is provided with a return duct (7), and one end of the return duct (7) is connected with water side (1b), The other end is connected with the water inlet end (1a) of microorganism electrolysis cell reactor (1).
7. the processing unit of the garbage leachate as described in claim 1-3 is any, it is characterised in that the microorganism electrolysis cell The water inlet end (1a) of reactor (1) connects a pretreatment water tank.
8. the processing unit of garbage leachate as claimed in claim 7, it is characterised in that the microorganism electrolysis cell reactor (1) water inlet end (1a) between pretreatment water tank be provided with water inlet water pump.
9. the processing unit of the garbage leachate as described in claim 1-3 is any, it is characterised in that the water inlet end (2a), The water side (2b), water side (2c), the water side (3b), the one of the water side (4b) and the water side (4c) Place or many places are provided with water valve.
10. the processing unit of the garbage leachate as described in claim 1-3 is any, it is characterised in that the water inlet end (2a), The water side (2b), water side (2c), the water side (3b), the one of the water side (4b) and the water side (4c) Place or many places are provided with flowmeter.
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