CN206359322U - Anammox removes the special purpose device of total nitrogen in landfill leachate technique - Google Patents
Anammox removes the special purpose device of total nitrogen in landfill leachate technique Download PDFInfo
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- CN206359322U CN206359322U CN201621234226.9U CN201621234226U CN206359322U CN 206359322 U CN206359322 U CN 206359322U CN 201621234226 U CN201621234226 U CN 201621234226U CN 206359322 U CN206359322 U CN 206359322U
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Abstract
Anammox removes the special purpose device of total nitrogen in landfill leachate technique, by strictly controlling relatively low dissolved oxygen concentration in the nitrification stage, make ammonium oxidation to nitrite nitrogen, escaped again by being translated into nitrogen in the denitrification stage, so as to reduce the total nitrogen in percolate, then water outlet carries out mud-water separation, is afterwards sufficiently mixed it with a small amount of percolate stoste, it is therefore an objective to control the ratio and content of ammonia nitrogen and nitrite nitrogen in waste water；Nitrogen or carbon dioxide are supplemented simultaneously, purpose is to reduce the dissolved oxygen in water, so as to provide favourable flow condition and strict anaerobic condition for follow-up Anammox reaction, hydrophily, the biologic packing material of bigger serface are finally set in anaerobic ammonia oxidation reactor, stable growing environment is provided for anaerobic ammonia oxidizing bacteria, so that Anammox denitrification reaction is smoothed out, realize landfill yard treatment of advanced stage landfill leachate total nitrogen reach it is energy-saving while effluent standard.
Description
Technical field
The utility model belongs to low ratio of carbon to ammonium high ammonia-nitrogen wastewater bio-denitrification technology field, is exactly specifically to be related to one kind to detest
Anaerobic ammonium oxidation removes the special purpose device of total nitrogen in landfill leachate technique, is particularly suitable for use in the efficient denitrification for the treatment of of advanced stage landfill leachate
Processing.
Background technology
In recent years, being continuously increased with municipal refuse yield, it is widest that landfill method is increasingly becoming domestic and international application
Garbage disposal and method of disposal.Fill produce percolate complicated component, water quality and quantity change greatly, ammonia nitrogen and organic matter it is dense
Degree is high, microbial nutrition element ratio is lacked of proper care etc., and intractability is larger.At present, the denitrogenation processing of percolate is mainly used
Traditional nitration denitrification denitrogenation technique.Traditional nitration denitrification denitrogenation be by nitrobacteria by mineralized nitrogen be nitrate
Nitrogen, then nitrate nitrogen is converted into by nitrogen by denitrifying bacteria escaped from water, so as to reach the purpose of denitrogenation.But for filling out
For the percolate for burying a late period, there is following problem in the technique：
(1) percolate carbon-nitrogen ratio is extremely low (1 or so), i.e. famine organic carbon source, and denitrification process needs to add largely
Carbon source, operating cost is high；
(2) aeration quantity of nitrifying process is larger, high energy consumption；
(3) removal efficiency to total nitrogen is limited, remaining substantial amounts of total nitrogen in water outlet, after advanced treating, also difficult
To reach existing discharge standard.
Above mentioned problem causes the drawbacks such as landfill leachate treatment hardly possible up to standard, processing cost height, causes many landfill yard rubbish
Percolate treatment facility can not normally be run, it is, therefore, desirable to provide effective denitrogenation technology.
It using anaerobic ammonia oxidizing bacteria is autotrophic bacterium that Anammox technology, which is, and its growth course only needs to carbonate and dioxy
Change the inorganic carbon source such as carbon, and the oxidation of ammonia nitrogen is participated in without molecular oxygen, the reduction of nitrite nitrogen without organic carbon source etc. this
One feature, the ammonia nitrogen in waste water is removed simultaneously with nitrite nitrogen, so as to reach the purpose of denitrogenation.The technology drops significantly
The low operating cost of wastewater biological denitrificaion, and the sludge yield of Anammox is low, does not produce greenhouse gases.Therefore, it is right
For the percolate of the high ammonia nitrogen of low ratio of carbon to ammonium, it is the optimal path of its denitrogenation to realize Anammox reaction.
But, the doubling time of anaerobic ammonia oxidizing bacteria is long, and the condition that it is cultivated and growth course needs is more strict, such as needs
Influent quality, stable growing environment, the strict anaerobic condition to be stablized etc., prior art is all difficult to realize stable anaerobism
Ammoxidation reaction, nitric efficiency is not increased substantially, and this limits its actual large-scale application to a certain extent.Cause
This, researching and developing a kind of technique and device that can effectively realize Anammox reaction and stable operation has highly important meaning
Justice.
Utility model content
The purpose of this utility model is directed in above-mentioned existing anaerobic ammonia oxidation process, influent ammonia nitrogen and nitrite nitrogen
Ratio and content are unstable, reaction system is unstable, water inlet removes rubbish containing technical problems such as dissolved oxygens there is provided Anammox
The special purpose device of total nitrogen technique, increases substantially nitric efficiency in rubbish percolate, by the total nitrogen qualified discharge in percolate.
Technical scheme
In order to realize above-mentioned technical purpose, the utility model designs a kind of Anammox and removes total nitrogen in landfill leachate
Technique, it is characterised in that it include following steps：
The first step, denitrification：Percolate enters the anoxic zone of short-cut nitrification-denitrification reactor, carries out denitrification
Total nitrogen in denitrogenation processing, reduction waste water；
Second step, short distance nitration：The denitrification water outlet of the first step is subjected to short distance nitration processing, nitrosation water outlet is obtained；
3rd step, mud-water separation：The nitrosation water outlet of second step is passed through mud and water separating equipment, mud-water separation is carried out；
4th step, intermediate treatment：The water outlet of 3rd step and a small amount of percolate, nitrogen or carbon dioxide are uniformly mixed
Close；
5th step, Anammox：The water outlet of 4th step is subjected to Anammox reaction, gone remaining total in water removal
Nitrogen.
Further, anti-nitration reaction temperature is 20~40 DEG C, dissolved oxygen DO≤0.3mg/L in the first step；Second step
Medium or short range nitration reaction temperature is 20~40 DEG C, dissolved oxygen DO is 0.6~1.2mg/L；Wherein, according to actual needs, short distance nitre
Change and may be configured as one-level or two-stage with denitrification.
Percolate stock solution flow Q in 4th step2With the anoxic zone of entrance short-cut nitrification-denitrification reactor
Garbage filter flow quantity Q1Ratio be less than 1.
Total nitrogen form of being intake in 5th step is mainly ammonia nitrogen and nitrite nitrogen, and the ratio of the two is (1:1.3)
~(1:1.4), the reaction is the progress under confined conditions at 20~50 DEG C, and water outlet is back into water according to a certain percentage, with
Dilution water inlet, improves denitrification effect.
The special purpose device of total nitrogen in landfill leachate technique is removed for above-mentioned Anammox, it is characterised in that：It is wrapped
Include short-cut nitrification-denitrification reactor, separator for mud and water, intermediate water tank, anaerobic ammonia oxidation reactor；
Raw water box is connected with short-cut nitrification-denitrification reactor, and the first intake pump and control valve are housed on connecting line, and
Raw water box is connected with intermediate water tank simultaneously, and control valve is housed on connecting line；The water side of short-cut nitrification-denitrification reactor with
Separator for mud and water is connected；The output end of separator for mud and water is connected with intermediate water tank；The output end and Anammox of intermediate water tank
Reactor is connected, and the second intake pump is housed on connecting line；The water outlet output end connection water producing tank of anaerobic ammonia oxidation reactor.
Further, polylith dividing plate is provided with the short-cut nitrification-denitrification reactor, reactor is divided into many cell compartments,
First cell compartment is anoxic zone, and follow-up cell compartment is oxygen-limiting area, wherein, it is provided with the first cell compartment in mixer, every lattice oxygen-limiting area
Provided with aeration tube, aeration tube is connected with outside air blower.
Further, the separator for mud and water uses membrane bioreactor or sedimentation basin or other device for dehydrating sladge waste, its
Bottom connects short-cut nitrification-denitrification reactor, and connecting line is provided with sludge reflux pump, and return line is provided with remaining dirty
Mud mud valve.
Further, the intermediate water tank is provided with nitrogen or carbon dioxide preparing device.
Further, the anaerobic ammonia oxidation reactor is provided with reflux pump and biologic packing material, and top is provided with exhaust apparatus.
Beneficial effect
The utility model makes ammonium oxidation to nitrite by strictly controlling relatively low dissolved oxygen concentration in the nitrification stage
Nitrogen, then escaped by being translated into nitrogen in the denitrification stage, so as to reduce the total nitrogen in percolate, then water outlet is entered
It, is sufficiently mixed by row mud-water separation with a small amount of percolate stoste afterwards, it is therefore an objective to control ammonia nitrogen and nitrous in waste water
The ratio and content of hydrochlorate nitrogen；Nitrogen or carbon dioxide are supplemented simultaneously, it is therefore an objective to reduce the dissolved oxygen in water, so as to be follow-up
Anammox reaction provides favourable flow condition and strict anaerobic condition, is finally set in anaerobic ammonia oxidation reactor
Hydrophily, the biologic packing material of bigger serface are put, stable growing environment is provided for anaerobic ammonia oxidizing bacteria, so that anaerobism ammonia
Oxidation process denitrification reaction is smoothed out, energy-conservation drop while the total nitrogen for realizing landfill yard treatment of advanced stage landfill leachate reaches effluent standard
Consumption.
Brief description of the drawings
Accompanying drawing 1 is the process chart of the utility model embodiment.
Accompanying drawing 2 is the equipment connecting relation schematic diagram of the utility model embodiment.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described further.
Embodiment
As shown in Figure 2, the special purpose device of total nitrogen in landfill leachate is removed for above-mentioned Anammox, its feature exists
In：It includes short-cut nitrification-denitrification reactor 1, separator for mud and water 2, intermediate water tank 3, anaerobic ammonia oxidation reactor 4；
Raw water box 5 is connected with short-cut nitrification-denitrification reactor 1, and the first intake pump 6 and control valve are housed on connecting line
7, and raw water box 5 while being connected with intermediate water tank 3, raw water box 5 is with being equipped with control valve 7, short distance nitre on the connecting line of intermediate water tank 3
The water side of change-denitrification reactor 1 is connected with separator for mud and water 2；The output end of separator for mud and water 2 is connected with intermediate water tank 3；
The output end of intermediate water tank 3 is connected with anaerobic ammonia oxidation reactor 4, output end and the anaerobic ammonia oxidation reactor 4 of intermediate water tank 3
Second intake pump 15 is housed on connecting line；The water outlet output end connection water producing tank 18 of anaerobic ammonia oxidation reactor 4.
Polylith dividing plate 9 is provided with the short-cut nitrification-denitrification reactor 1, reactor is divided into many cell compartments, the first lattice
Room is anoxic zone, and follow-up cell compartment is oxygen-limiting area, wherein, it is provided with the first cell compartment in mixer 8, every lattice oxygen-limiting area and is equipped with exposure
Tracheae 11, aeration tube 11 is connected with outside air blower 10.
The separator for mud and water 2 uses membrane bioreactor MBR or sedimentation basin or other device for dehydrating sladge waste, its bottom
Short-cut nitrification-denitrification reactor 1 is connected, connecting line is provided with sludge reflux pump 12, and return line is provided with remaining dirty
Mud mud valve 13.
The intermediate water tank 3 is provided with nitrogen or carbon dioxide preparing device 14.
The anaerobic ammonia oxidation reactor 4 is provided with exhaust apparatus provided with reflux pump 16 and biologic packing material 17, top.
The technical process for carrying out Anammox removal total nitrogen in landfill leachate using above-mentioned special purpose device is as follows：
The first step, denitrification：Percolate enters the anoxic zone of short-cut nitrification-denitrification reactor, in reaction temperature
Nitrogen effusion system is produced to carry out denitrification denitrogenation in the presence of 20~40 DEG C, dissolved oxygen DO≤0.3mg/L, stirring so that
Total nitrogen reduction in waste water.
Second step, short distance nitration：The water outlet of anoxic zone enters oxygen-limiting area, is 20~40 DEG C, dissolved oxygen DO in reaction temperature
It is nitrite nitrogen by the mineralized nitrogen in water to carry out short distance nitration under conditions of 0.6~1.2mg/L, part nitrification liquid is returned
Flow to anoxic zone, to provide the electron acceptor nitrite nitrogen needed for denitrification process, and according to actual needs, short distance nitration with
Denitrification may be configured as one-level or two-stage.
3rd step, mud-water separation：Short distance nitration water outlet enters sludge-water separating system and carries out mud-water separation, obtains water outlet and work
Property sludge, wherein, activated sludge is back to the anoxic zone of short-cut nitrification-denitrification according to a certain percentage, with maintenance system compared with
High sludge concentration, so as to improve nitric efficiency, remaining activated sludge is emitted into sludge-tank by mud valve.
4th step, intermediate treatment：Mud-water separation water outlet and a small amount of percolate stoste, nitrogen or carbon dioxide are uniform
Mixing, obtains middle water outlet.Wherein, the flow Q of percolate stoste2With entering lacking for short-cut nitrification-denitrification reactor
The garbage filter flow quantity Q in oxygen area1Ratio be less than 1.
5th step, Anammox：Middle water outlet enters anaerobic ammonia oxidation reactor from bottom, total nitrogen form in the water inlet
Predominantly ammonia nitrogen and nitrite nitrogen, and the ratio of the two is (1:1.3)~(1:1.4).Water inlet enters after reactor by life
Thing filler, microbiological oxidation and reduction that now the ammonia nitrogen in water is adhered to nitrite nitrogen on biologic packing material produce nitrogen
From top vent discharge, so as to reach the purpose of advanced nitrogen.Wherein, whole course of reaction is the closed bar at 20~50 DEG C
Carried out under part, and water outlet is back into water according to a certain percentage, to dilute water inlet, improves denitrification effect.
The present embodiment makes ammonium oxidation to nitrite by strictly controlling relatively low dissolved oxygen concentration in the nitrification stage
Nitrogen, then escaped by being translated into nitrogen in the denitrification stage, so as to reduce the total nitrogen in percolate, then water outlet is entered
It, is sufficiently mixed by row mud-water separation with a small amount of percolate stoste afterwards, it is therefore an objective to control ammonia nitrogen and nitrous in waste water
The ratio and content of hydrochlorate nitrogen；Nitrogen or carbon dioxide are supplemented simultaneously, it is therefore an objective to reduce the dissolved oxygen in water, so as to be follow-up
Anammox reaction provides favourable flow condition and strict anaerobic condition, is finally set in anaerobic ammonia oxidation reactor
Hydrophily, the biologic packing material of bigger serface are put, stable growing environment is provided for anaerobic ammonia oxidizing bacteria, so that anaerobism ammonia
Oxidation process denitrification reaction is smoothed out, energy-conservation drop while the total nitrogen for realizing landfill yard treatment of advanced stage landfill leachate reaches effluent standard
Consumption.
Claims (5)
1. Anammox removes the special purpose device of total nitrogen in landfill leachate technique, it is characterised in that：It include short distance nitration-
Denitrification reactor (1), separator for mud and water (2), intermediate water tank (3), anaerobic ammonia oxidation reactor (4)；
Raw water box (5) is connected with short-cut nitrification-denitrification reactor (1), equipped with the first intake pump (6) and control on connecting line
Valve (7), and raw water box (5) with intermediate water tank (3) while be connected, and control valve (7), short distance nitration-anti-nitre are housed on connecting line
The water side for changing reactor (1) is connected with separator for mud and water (2), and output end and the intermediate water tank (3) of separator for mud and water (2) connect
Connect, the output end of intermediate water tank (3) is connected with anaerobic ammonia oxidation reactor (4), the second intake pump (15) be housed on connecting line,
The water outlet output end connection water producing tank (18) of anaerobic ammonia oxidation reactor (4).
2. Anammox as claimed in claim 1 removes the special purpose device of total nitrogen in landfill leachate technique, its feature exists
In：Polylith dividing plate (9) is provided with the short-cut nitrification-denitrification reactor (1), reactor is divided into many cell compartments, the first lattice
Room is anoxic zone, and follow-up cell compartment is oxygen-limiting area, wherein, it is provided with mixer (8), every lattice oxygen-limiting area and is equipped with the first cell compartment
Aeration tube (11), aeration tube (11) is connected with outside air blower (10).
3. Anammox as claimed in claim 1 removes the special purpose device of total nitrogen in landfill leachate technique, its feature exists
In：The separator for mud and water (2) uses membrane bioreactor or sedimentation basin or device for dehydrating sladge waste, its bottom connection short distance nitre
Change-denitrification reactor (1), connecting line is provided with sludge reflux pump (12), and return line is provided with excess sludge spoil disposal
Valve (13).
4. Anammox as claimed in claim 1 removes the special purpose device of total nitrogen in landfill leachate technique, its feature exists
In：The intermediate water tank (3) is provided with nitrogen or carbon dioxide preparing device (14).
5. Anammox as claimed in claim 1 removes the special purpose device of total nitrogen in landfill leachate technique, its feature exists
In：The anaerobic ammonia oxidation reactor (4) is provided with exhaust apparatus provided with reflux pump (16) and biologic packing material (17), top.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621234226.9U CN206359322U (en) | 2016-11-17 | 2016-11-17 | Anammox removes the special purpose device of total nitrogen in landfill leachate technique |
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| CN201621234226.9U CN206359322U (en) | 2016-11-17 | 2016-11-17 | Anammox removes the special purpose device of total nitrogen in landfill leachate technique |
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