CN206447642U - Kitchen garbage, waste-water handles denitrification system - Google Patents
Kitchen garbage, waste-water handles denitrification system Download PDFInfo
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- CN206447642U CN206447642U CN201720025887.9U CN201720025887U CN206447642U CN 206447642 U CN206447642 U CN 206447642U CN 201720025887 U CN201720025887 U CN 201720025887U CN 206447642 U CN206447642 U CN 206447642U
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Abstract
Denitrification system is handled the utility model discloses kitchen garbage, waste-water, including controlled oxidation area, anaerobic zone and the aerobic zone being sequentially communicated, the water inlet of controlled oxidation area bottom is connected with inlet channel, the first aerator is provided with controlled oxidation area, first aerator, which is connected in the first air blower, controlled oxidation area, is provided with dissolved oxygen concentration analyzer, ammonia nitrogen concentration analyzer and nitroso nitrogen concentration analyzer；Agitating device is provided with anaerobic zone；The second aerator is provided with aerobic zone, the second aerator, which is connected in the second air blower, aerobic zone, is provided with dissolved oxygen concentration analyzer and ammonia nitrogen concentration analyzer, membrane module is provided with aerobic zone, membrane module is connected to outlet conduit, and outlet conduit is provided with suction pump.The denitrification system that the utility model is provided, nitric efficiency is high, reduces operating cost.
Description
Technical field
The utility model is related to technical field of sewage, more particularly to a kind of kitchen garbage, waste-water processing denitrification system.
Background technology
Kitchen garbage main component includes rice and flours food residues, vegetables, vegetable and animals oils, meat bone etc., chemically group
Cheng Shang, there is starch, cellulose, protein, lipid and inorganic salts.The kitchen garbage processing technology of country's main flow is to eat at present
Kitchen rubbish carries out anaerobic fermentation to the organic matter in kitchen garbage, kitchen garbage is converted into biogas by pre-processing after sorting
The energy, and the biogas slurry and biogas residue of anaerobic fermentation generation is separated, the biogas slurry of generation is discharged at town sewage after further handling
Reason system.According to live build the requirement that portion's sewage is discharged into town sewer water standard (CJ343-2010), pipe of receiving discharge need by
Ammonia nitrogen, total nitrogen are handled to 45mg/L, below 70mg/L respectively in biogas slurry.And kitchen garbage through anaerobism due to rich in protein, sending out
Ammonia nitrogen concentration up to 1800-2400mg/L, COD6000-10000mg/L in the biogas slurry produced after ferment.
If individually using traditional nitrification-anti-nitre or nitrosation-denitrification processing system (A/O), it is necessary to 2-3 grades of A/O
Device is connected, take up an area it is very big, and be aerated, the energy consumption that flows back also will be very huge.
Compared with traditional nitration denitrification technique, anaerobic ammonia oxidation process is a kind of current state-of-the-art biological denitrificaion work
Skill, it is only necessary to by the ammonium oxidation of half be nitrite nitrogen, then converted jointly by anaerobic ammonium oxidizing bacteria with remaining ammonia nitrogen
For nitrogen, 88% total nitrogen removal efficiency and more than 99% ammonia nitrogen removal efficiency can be reached.The denitrification ability of the technique is very
By force, 2kgN/m3d volumetric loading can be reached, is 10 times of traditional nitrification-denitrification technique.
Anaerobic ammonia oxidation process is usually required in two single reactors, and first reactor controls ammonium oxidation to Asia
A part of mineralized nitrogen in nitrification stage, waste water is nitrite nitrogen；Second reactor ammonia nitrogen and nitrite nitrogen are being detested
Nitrogen is converted under anaerobic ammonium oxidation bacterial action.
Aeration in nitrosation reactor needs restricted aeration, if the nitrite generated in nitrosation reactor
Nitrogen concentration is too high, can produce toxic action to the anaerobic ammonium oxidizing bacteria in anaerobic ammonia oxidation reactor.If moreover, aeration control
System is inaccurate, and the water oxygen level entered from nitrosation reactor in anaerobic ammonia oxidation reactor is high, also can be to anaerobism ammonia oxygen
Change bacterium to have a negative impact, thus cause technique and system unstable, therefore, the technological requirement controls accurate nitrosation reaction
Dissolved oxygen concentration, mineralized nitrogen in device are the ratio of nitrite nitrogen.And anaerobic ammonium oxidation process can produce about 11%
Nitrate nitrogen, though total nitrogen removal efficiency can reach 88%, when influent ammonium concentration is too high, still higher than discharge standard.
In addition, nitrosation-anaerobic ammoxidation reaction system need to strictly control inlet COD concentration, because nitrococcus, anaerobism
Ammonia oxidation bacteria is all autotrophic bacteria, and its growth rate is slow, and COD enters membership and causes heterotroph largely to breed, and heterotroph quickly increases
Grow as dominant bacteria, nitrococcus, the ratio of anaerobic ammonia oxidizing bacteria reduce, and reduce denitrification effect.
Kitchen waste water also has the characteristics of high salinity is high conductivity, and another typical Anammox technology is used
One step process, it is necessary to run under the conditions of granule sludge, and the kitchen waste water of high conductivity causes granule sludge solution to wad a quilt with cotton and cause
Operational failure.
Utility model content
The utility model purpose is to provide a kind of kitchen garbage, waste-water processing denitrification system, and its small, energy consumption of occupation of land is low, denitrogenation
It is efficiency high, stable.
Based on above mentioned problem, the technical scheme that the utility model is provided is：
Kitchen garbage, waste-water handles denitrification system, including controlled oxidation area, anaerobic zone and the aerobic zone being sequentially communicated, described
The water inlet of controlled oxidation area bottom is connected with inlet channel, and the delivery port on controlled oxidation area top is connected to institute through pipeline
The water inlet of anaerobic zone bottom is stated, the delivery port on the anaerobic zone top is connected to the water inlet of the aerobic zone bottom through pipeline
Mouthful；
The first aerator is provided with the controlled oxidation area, first aerator is connected to the first air blower, institute
State and dissolved oxygen concentration analyzer, ammonia nitrogen concentration analyzer and nitroso nitrogen concentration analyzer are provided with controlled oxidation area；
It is provided with the anaerobic zone in agitating device, the anaerobic zone and is inoculated with anaerobic ammonia oxidizing bacteria and denitrifying bacterium；
The second aerator is provided with the aerobic zone, second aerator is connected to the second air blower, described good
It is provided with oxygen area in dissolved oxygen concentration analyzer and ammonia nitrogen concentration analyzer, the aerobic zone and is provided with membrane module, the membrane module
Outlet conduit is connected to, the outlet conduit is provided with suction pump.
In some embodiments wherein, the part clear water in the outlet conduit is back to institute through the first reflux line
Controlled oxidation area is stated, first reflux line is provided with the first reflux pump, the first valve and first flowmeter.
In some embodiments wherein, the muddy water mixed solution of the anaerobic zone is back to described through the second reflux line
Controlled oxidation area, second reflux line is provided with the second reflux pump, the second valve and second flowmeter.
In some embodiments wherein, the nitrate mixed liquor of the aerobic zone is back to institute through the 3rd reflux line
Anaerobic zone is stated, the 3rd reflux line is provided with the 3rd reflux pump, the 3rd valve and the 3rd flowmeter.
In some embodiments wherein, the bottom of the aerobic zone is provided with the sludge pipe for being connected to sludge dewatering system
Road, the sludge pipeline is provided with sludge pump.
In some embodiments wherein, floc sludge is used in system.
Compared with prior art, the utility model has the advantages that：
1. using the technical solution of the utility model, for the kitchen waste water containing ammonia nitrogen in high density, nitric efficiency is improved,
Reduce the floor space of sewage treatment equipment；
2. use the technical solution of the utility model, there are nitrococcus, anaerobic ammonia oxidizing bacteria and anti-in whole reaction system
Nitrifier, compared with traditional denitrification reactor, reduces aeration quantity, reduces capacity of returns, saves the power of equipment operation
Cost；
3. using the technical solution of the utility model, anaerobic zone is vaccinated with denitrifying bacterium, when controlled oxidation area is aerated
It when excessive, can be utilized, it is ensured that the safety of anaerobic ammonium oxidizing bacteria, improve by denitrifying bacterium into a small amount of oxygen in anaerobic zone
The stability of system；
4. using the technical solution of the utility model, limit of the nitrosation-anaerobic ammoxidation technique to influent COD is reduced
System, the denitrifying bacterium of anaerobic zone can improve the clearance of total nitrogen using COD and the nitrate of Anammox generation；
5. using the technical solution of the utility model, the aerobic zone of setting can react Anammox incomplete ammonia nitrogen
Continue to aoxidize, improve the removal efficiency of ammonia nitrogen；
6. using the further technical scheme of the utility model, aerobic zone is entered using membrane biological reaction component to mixed liquor
Row separation, the clear water after separation is entirely free of nitrifier, and the strain in controlled oxidation area will not be destroyed by being back to behind controlled oxidation area
Balance, and make it that sludge concentration can reach 15-18g/L in reactor, eliminate sludge concentration tank, it can directly carry out sludge and take off
Water；
7. using the further technical scheme of the utility model, anaerobic zone muddy water mixed solution is back to controlled oxidation area,
The residence time of controlled oxidation area nitrococcus can be extended, nitric efficiency is improved；
8. the further technical scheme of the utility model is used, by the nitrate mixed-liquor return of aerobic zone to anaerobic zone,
Nitrate is converted into after nitrogen by denitrifying bacterium and removed, total nitrogen concentration in reduction water outlet；
9. using the technical solution of the utility model, sludge uses floc sludge, can apply to Low-salinity waste water, also fit
For high salinity waste water, and operational management is relatively easy.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, required in being described below to embodiment
The accompanying drawing used is briefly described, and drawings in the following description are only some embodiments of the present utility model, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is the structural representation that the utility model kitchen garbage, waste-water handles denitrification system embodiment；
Wherein：1st, controlled oxidation area；2nd, anaerobic zone；3rd, aerobic zone；4th, inlet channel；5th, the first aerator；6th, first
Air blower；7th, dissolved oxygen concentration analyzer；8th, ammonia nitrogen concentration analyzer；9th, nitrate concentration mensuration instrument；10th, agitating device；11、
Second aerator；12nd, the second air blower；13rd, membrane module；14th, outlet conduit；15th, suction pump；16th, the first reflux line；
17th, the first reflux pump；18th, the first valve；19th, first flowmeter；20th, the second reflux line；21st, the second reflux pump；22nd, second
Valve；23rd, second flowmeter；24th, the 3rd reflux line；25th, the 3rd reflux pump；26th, the 3rd valve；27th, the 3rd flowmeter；
28th, sludge pipeline；29th, sludge pump.
Embodiment
Such scheme is described further below in conjunction with specific embodiment.It should be understood that these embodiments are to be used to illustrate
The utility model and be not limited to limit scope of the present utility model.The implementation condition used in embodiment can be according to specific producer
Condition do further adjustment, unreceipted implementation condition is usually the condition in normal experiment.
It is that the schematic diagram of the utility model embodiment handles denitrification system there is provided a kind of kitchen garbage, waste-water referring to Fig. 1,
Including the controlled oxidation area 1, anaerobic zone 2 and aerobic zone 3 being sequentially communicated, the water inlet of the wherein bottom of controlled oxidation area 1 is connected with
Inlet channel 4, the delivery port on the top of controlled oxidation area 1 is connected to the water inlet of the bottom of anaerobic zone 2, the top of anaerobic zone 2 through pipeline
Delivery port be connected to the water inlet of the bottom of aerobic zone 3 through pipeline, controlled oxidation area 1, the water outlet of anaerobic zone 2 are detested from flowing to respectively
Oxygen area 2, aerobic zone 3.
The first aerator 5 is provided with controlled oxidation area 1, the first aerator 5 is connected to the first air blower 6, controlled oxygen
Change and dissolved oxygen concentration analyzer 7, ammonia nitrogen concentration analyzer 8 and nitroso nitrogen concentration analyzer 9 are provided with area 1, in implementation, according to
Dissolved oxygen, ammonia nitrogen, the concentration of nitroso nitrogen control the aeration quantity and flow of inlet water of the first air blower 6, make controlled oxidation area 1 about
50-60% ammonia nitrogen is oxidized to nitroso nitrogen, and a part of COD that degrades.
Anaerobic zone 2 is provided with agitating device 10, while being inoculated with anaerobic ammonia oxidizing bacteria and denitrifying bacterium, anaerobism in anaerobic zone 2
Ammonia nitrogen and nitroso nitrogen are converted into nitrogen and a small amount of nitrate by ammonia oxidation bacteria, and denitrifying bacterium utilizes COD in water to turn nitrate
Turn to nitrogen discharge.
The second aerator 11 is provided with aerobic zone 3, the second aerator 11 is connected to the second air blower 12, aerobic zone 3
It is interior to be provided with dissolved oxygen concentration analyzer 7 and ammonia nitrogen concentration analyzer 8, control second by the concentration of ammonia nitrogen, dissolved oxygen in implementation
The aeration quantity of air blower 12, makes remaining ammonia nitrogen be oxidized to nitrate, and remaining COD is completely oxidized to CO2.Aerobic zone 3
Middle use membrane module 13 (MBR module) separates to mixed liquor, and membrane module 13 is connected to outlet conduit 14, in outlet conduit 14
It is provided with suction pump 15.
Water is distinguished inside implementation result of the present utility model, outlet conduit 14 through the first reflux line in order to further optimize
16 are back to controlled oxidation area 2, on the one hand can reduce controlled oxidation area ammonia nitrogen concentration, it is to avoid cause toxicity to nitrococcus,
On the other hand the nitroso nitrogen concentration of anaerobic zone can be lowered into, it is to avoid inhibitory action is produced to anaerobic ammonia oxidizing bacteria, implemented
In, the first reflux line 16 is provided with the first reflux pump 17, the first valve 18 and first flowmeter 19, for the convenience of control,
First valve 18 can be magnetic valve and is connected with controller.
In order to further optimize implementation result of the present utility model, extend the residence time of the nitrococcus of controlled oxidation area 1,
Nitric efficiency is improved, the muddy water mixed solution of anaerobic zone 2 is back to controlled oxidation area 1, the second backflow through the second reflux line 20
Pipeline 20 is provided with the second reflux pump 21, the second valve 22 and second flowmeter 23, and for the convenience of control, the second valve 22 can
Think magnetic valve and be connected with controller.
In order to further optimize implementation result of the present utility model, the total nitrogen concentration in water outlet, aerobic zone 3 are further reduced
Nitrate mixed liquor be back to anaerobic zone 2 through the 3rd reflux line 24, the 3rd reflux line 24 provided with the 3rd reflux pump 25,
3rd valve 26 and the 3rd flowmeter 27, for the convenience of control, the 3rd valve 26 can be magnetic valve and is connected with controller.
In this example, aerobic zone 3 is separated using MBR module to mixed liquor, and sludge concentration can reach 15- in aerobic zone 3
18g/L, can save sludge concentration tank, and the sludge pipeline 28 for being connected to sludge dewatering system is provided with the bottom of aerobic zone 3 to arrange
Go out the sludge of aerobic zone 3, sludge pump 29 is provided with sludge pipeline 28.
In this example, floc sludge is used in system, the system is applied to Low-salinity waste water, is also applied for high salinity
Waste water, and operational management is relatively easy.
To handle 150m3It is controlled oxidation area, anaerobic zone, good exemplified by/d, ammonia nitrogen concentration 1800mg/L kitchen garbage, waste-water
The volume in oxygen area is respectively 250,350 and 220m3, aeration quantity 400m3/ h, overall hydraulic detention time is about 5.5 days, you can
Discharge standard is reached, according to the reactor of single nitrification-denitrification, aerobic zone, the volume of anaerobic zone be at least 1600,
1100m3, aeration quantity 900m3/ h, it is seen that denitrification system of the present utility model saves floor space and capital cost and run into
This.
Examples detailed above is only to illustrate technical concepts and features of the present utility model, and its object is to allow be familiar with technique
Personnel can understand content of the present utility model and implement according to this, and protection domain of the present utility model can not be limited with this.It is all
The equivalent transformation done according to the utility model Spirit Essence or modification, should all cover protection domain of the present utility model it
It is interior.
Claims (6)
1. kitchen garbage, waste-water handles denitrification system, it is characterised in that：Including controlled oxidation area (1), the anaerobic zone being sequentially communicated
(2) and aerobic zone (3), the water inlet of controlled oxidation area (1) bottom is connected with inlet channel (4), the controlled oxidation area
(1) delivery port on top is connected to the water inlet of the anaerobic zone (2) bottom, the water outlet on anaerobic zone (2) top through pipeline
Mouth is connected to the water inlet of the aerobic zone (3) bottom through pipeline；
The first aerator (5) is provided with the controlled oxidation area (1), first aerator (5) is connected to the first air blast
Dissolved oxygen concentration analyzer (7), ammonia nitrogen concentration analyzer (8) and nitroso nitrogen are provided with machine (6), the controlled oxidation area (1)
Concentration mensuration instrument (9)；
Agitating device (10) is provided with the anaerobic zone (2)；
The second aerator (11) is provided with the aerobic zone (3), second aerator (11) is connected to the second air blower
(12) dissolved oxygen concentration analyzer (7) and ammonia nitrogen concentration analyzer (8), the aerobic zone (3), are provided with the aerobic zone (3)
Interior to be provided with membrane module (13), the membrane module (13) is connected to outlet conduit (14), and the outlet conduit (14) is provided with suction
Pump (15).
2. kitchen garbage, waste-water according to claim 1 handles denitrification system, it is characterised in that：The outlet conduit (14)
Interior part clear water is back on the controlled oxidation area (1), first reflux line (16) through the first reflux line (16)
Provided with the first reflux pump (17), the first valve (18) and first flowmeter (19).
3. kitchen garbage, waste-water according to claim 2 handles denitrification system, it is characterised in that：The anaerobic zone (2)
Muddy water mixed solution is back on the controlled oxidation area (1), second reflux line (20) through the second reflux line (20) and set
There are the second reflux pump (21), the second valve (22) and second flowmeter (23).
4. kitchen garbage, waste-water according to claim 3 handles denitrification system, it is characterised in that：The aerobic zone (3)
Nitrate mixed liquor is back to the anaerobic zone (2) through the 3rd reflux line (24), and the 3rd reflux line (24) is provided with
3rd reflux pump (25), the 3rd valve (26) and the 3rd flowmeter (27).
5. kitchen garbage, waste-water according to claim 1 handles denitrification system, it is characterised in that：The aerobic zone (3)
Bottom is provided with the sludge pipeline (28) for being connected to sludge dewatering system, and the sludge pipeline (28) is provided with sludge pump (29).
6. denitrification system is handled according to any described kitchen garbage, waste-water of claim 1 to 5, it is characterised in that：Adopted in system
Use floc sludge.
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| CN201720025887.9U CN206447642U (en) | 2017-01-10 | 2017-01-10 | Kitchen garbage, waste-water handles denitrification system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113578919A (en) * | 2021-07-19 | 2021-11-02 | 上海大学 | Method for improving dehydration performance of kitchen waste anaerobic digestion biogas residues |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113578919A (en) * | 2021-07-19 | 2021-11-02 | 上海大学 | Method for improving dehydration performance of kitchen waste anaerobic digestion biogas residues |
| CN113578919B (en) * | 2021-07-19 | 2022-09-09 | 上海大学 | Method for improving dehydration performance of kitchen waste anaerobic digestion biogas residues |
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