CN109081509A - A kind of sewage disposal system and technique suitable for low, high carbon-nitrogen ratio - Google Patents
A kind of sewage disposal system and technique suitable for low, high carbon-nitrogen ratio Download PDFInfo
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- CN109081509A CN109081509A CN201810994545.7A CN201810994545A CN109081509A CN 109081509 A CN109081509 A CN 109081509A CN 201810994545 A CN201810994545 A CN 201810994545A CN 109081509 A CN109081509 A CN 109081509A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- 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]
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- 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
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- 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
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- 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
- C02F3/02—Aerobic processes
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F3/28—Anaerobic digestion processes
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- 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
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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Abstract
Sewage disposal system suitable for low, high carbon-nitrogen ratio of the invention, including grid pond, adjusting sedimentation basin, hydrolysis acidification pool, aerobic tank, anaerobic pond and aeration membrane cisterna, air blower, sludge-tank, dephosphorization agent adding set, carbon source adding set and controller.Sewage treatment process of the invention, comprising: a) retention of solid matter and dephosphorization；B) degradation and/or anti-nitration reaction；C) aerobic reaction；D) anaerobic reaction；E) water level control；F) discharge of sludge and clear liquid reflux；G) water body disinfection and discharge.Sewage disposal system and technique of the invention, when COD content is lower, hydrolysis acidification pool only carries out slightly solubility larger molecular organics conversion；When COD content is higher in sewage, hydrolysis acidification pool also carries out anti-nitration reaction as carbon source using the solution that aerobic tank, aeration membrane cisterna return, so that sewage disposal system of the invention can carry out more thorough purified treatment to the sewage of high and low carbon-nitrogen ratio, beneficial effect is significant, is suitable for the application of popularization.
Description
Technical field
The present invention relates to a kind of sewage disposal systems and technique suitable for low, high carbon-nitrogen ratio, more specifically, especially relating to
And the COD content in a kind of sewage according to detection controls whether nitrification sewage flows back and whether be added being suitable for for carbon source
The sewage disposal system and technique of low, high carbon-nitrogen ratio.
Background technique
It is excessively high that ammonia nitrogen concentration is generally presented in China's country sewage, COD concentration change greatly, range from 100mg/L to
1000mg/L etc. are not able to satisfy suitable carbon-nitrogen ratio, so causing the Nitrogen removal effect of domestic sewage in rural areas little.Sewage
Biological denitrificaion includes three ammonification, nitrification, denitrification processes.Wherein, ammonification, nitrification need to be aerated the condition for providing and being suitble to and will have
Machine nitrogen, ammoniacal nitrogen are converted into nitrate nitrogen, and energy consumption is huge.Meanwhile denitrification process needs to provide abundance for denitrifying bacterium
Organic matter makes nitrate nitrogen be converted into nitrogen.The present invention is based on rural sewage treatment technology described above there are the problem of, propose
A kind of bio-denitrifying sewage processing system and technique can be achieved at the same time low, high carbon-nitrogen ratio.
Summary of the invention
The present invention in order to overcome the shortcomings of the above technical problems, provides the COD content in a kind of sewage according to detection
Whether flow back and whether be added the sewage disposal system and work suitable for low, high carbon-nitrogen ratio of carbon source to control nitrification sewage
Skill.
Sewage disposal system suitable for low, high carbon-nitrogen ratio of the invention, including treatment sewage followed by grid
Pond adjusts sedimentation basin, hydrolysis acidification pool, aerobic tank, anaerobic pond and aeration membrane cisterna and air blower, sludge-tank, dephosphorization agent addition
Device, carbon source adding set and controller；It is characterized by: grid pond and adjust sedimentation basin between pipeline on be provided with to dirt
COD sensor that the COD content of water measures adjusts sedimentation basin, is provided in aeration membrane cisterna and is detected to water level
Detecting head, controller are connected through detection line with COD sensor, detecting head；It adjusts and is provided in sedimentation basin by sewage therein
The submersible sewage pump being promoted in hydrolysis acidification pool, air blower are connected through aeration pipeline with sedimentation basin, aerobic tank, aeration membrane cisterna is adjusted
It connects, to realize aeration, between aerobic tank and hydrolysis acidification pool, is aerated between membrane cisterna and hydrolysis acidification pool by being provided with conveying
The reflux pipeline of pump communicates；Dephosphorization agent adding set is connected through pipeline with adjusting sedimentation basin and aerobic tank, to realize dephosphorization
The addition of agent, carbon source adding set are communicated through pipeline with anaerobic pond, to realize the addition of carbon source；Adjust sedimentation basin, aeration membrane cisterna
It is communicated by sludge pipeline with sludge-tank, the top of sludge-tank is communicated through reflux pipeline with hydrolysis acidification pool, to realize sludge
The reflux of pond clear liquid at the middle and upper levels；Controller is through control pair submersible sewage pump, delivery pump, dephosphorization agent adding set and carbon source adding set
Working condition controlled.
Sewage disposal system suitable for low, high carbon-nitrogen ratio of the invention is provided in the grid pond and filters out in sewage
The grid of sundries, the front end for adjusting sedimentation basin are provided with perforated pipe, and dephosphorization agent is added to grid pond and adjusted by dephosphorization adding set
It saves in the pipeline between sedimentation basin, so that the phosphate in dephosphorization agent and sewage is sufficiently mixed and generates precipitating；Submersible sewage pump setting
At 1/3 height for adjusting sedimentation basin；It is hung with composite filling in the hydrolysis acidification pool, aerobic tank and anaerobic pond, combines
The diameter of filler is 150mm, spacing 80mm.
Sewage disposal system suitable for low, high carbon-nitrogen ratio of the invention, residence time of the sewage in hydrolysis acidification pool
For 5~8h, the residence time in aerobic tank is 8~12h, and the residence time in anaerobic pond is 2~4h, in aeration membrane cisterna
Residence time be 4~6h；The sludge sludge age selected in aeration membrane cisterna is 25~35 days.
Sewage disposal system suitable for low, high carbon-nitrogen ratio of the invention is provided in hydrolysis acidification pool, anaerobic pond anti-
Only sludge settling, make the agitating device for being sufficiently mixed and contacting with sludge into water；Air blower is realizing adjusting sedimentation basin, aerobic tank
While being aerated with aeration membrane cisterna, provide oxygen for microorganism, sewage is also made to be sufficiently mixed and contact with sludge.
Sewage disposal system suitable for low, high carbon-nitrogen ratio of the invention, including sterilization pool and be set to aeration membrane cisterna in
Water pump, the production water for being aerated membrane cisterna is evacuated in sterilization pool by water pump, is discharged into receiving again after killing pathogen and microorganism in water
Water body.
The sewage treatment process of sewage disposal system suitable for low, high carbon-nitrogen ratio of the invention, which is characterized in that pass through
Following steps are realized:
A) retention of solid matter and dephosphorization, sewage to be processed initially enter grid pond, and the grid in grid pond will be in sewage
Slightly, carefully sundries is intercepted；Sewage enters adjust sedimentation basin after, make under the action of dephosphorization agent calcium phosphate precipitation in sewage,
Separation；B) degradation and/or anti-nitration reaction, controller detects the COD content in sewage by COD sensor, when in sewage
When COD content is lower than setting value, sewage converts larger molecular organics difficult to degrade in hydrolysis acidification pool degradable small
Molecular organic；When COD content is higher than setting value in sewage, sewage is in hydrolysis acidification pool not only by macromolecular difficult to degrade
Organic matter is converted into degradable small organic molecule, and controller also opens delivery pump, will be in aerobic tank and aeration membrane cisterna
Liquid be supplemented in hydrolysis acidification pool as carbon source, it is de- to carry out denitrification using the anaerobic condition of hydrolysis acidification pool and carbon source
Nitrogen；C) aerobic reaction, after sewage flows into aerobic tank by hydrolysis acidification pool, the microorganism in aerobic tank is abundant under aeration condition
Organic matter in degradation sewage, and under the action of nitrococcus, nitrifier, it is nitrate nitrogen, nitrite nitrogen by mineralized nitrogen；D) detests
Oxygen reaction, after sewage enters anaerobic pond by aerobic tank, according to the COD content in sewage detected, to control carbon source addition dress
The carbon source amount added into anaerobic pond is set, it is de- that the denitrification in anaerobic pond carries out denitrification using carbon source under anaerobic environment
Nitrogen；E) water level control, controller detect the water level for adjusting sedimentation basin and being aerated in membrane cisterna by detecting head, when adjusting sedimentation basin
In liquid level it is too high or too low when, then the flow that draws water of submersible sewage pump is increased separately and reduces, to control to adjust the sewage of sedimentation basin
In liquid level appropriate；When the liquid level being aerated in membrane cisterna is too high or too low, then the pump-out of submersible sewage pump is respectively reduced and increases,
So that the liquid level that will be aerated in membrane cisterna remains in place；F) discharge of sludge and clear liquid reflux, adjust containing for sedimentation basin generation
The suspended particulate substance and microorganism sludge that phosphorus sludge and aeration membrane cisterna are retained down, are discharged by sludge pipeline to sludge-tank
In, it precipitates, be concentrated in sludge-tank, the supernatant liquor of sludge-tank is back to hydrolysis acidification pool；G) water body disinfection and discharge, water
Pump is evacuated to the water body that membrane cisterna generates is aerated in sterilization pool, and most pathogens and microorganism is killed in sterilization pool, then arrange
Enter receiving water body.
The beneficial effects of the present invention are: the sewage disposal system and technique suitable for low, high carbon-nitrogen ratio of the invention, setting
Have sewage followed by grid pond, adjust sedimentation basin, hydrolysis acidification pool, aerobic tank, anaerobic pond and aeration membrane cisterna, successively realize
It is anti-to the nitrification under the solid matter filtering of sewage, phosphate removal, the conversion of slightly solubility larger molecular organics, aeration condition
It answers, the anti-nitration reaction processing under anaerobic environment, has effectively achieved the removal of phosphate from sewage, ammonia nitrogen and organic matter, it can
Degree by domestic sewage in rural areas purification for that can be directly discharged into receiving water body.It can detect in sewage by setting COD sensor
COD content, when COD content is lower, then aerobic tank, aeration membrane cisterna rework solution, hydrolysis acidification pool only do not carry out slightly solubility
Larger molecular organics conversion；When COD content is higher in sewage, hydrolysis acidification pool also utilizes aerobic tank, aeration membrane cisterna to return
Solution carries out anti-nitration reaction as carbon source, so that sewage disposal system of the invention can be into the sewage of high and low carbon-nitrogen ratio
The more thorough purified treatment of row, beneficial effect is significant, is suitable for the application of popularization.
Detailed description of the invention
Fig. 1 is the schematic diagram of the sewage disposal system for low, high carbon-nitrogen ratio of the invention.
In figure: 1 grid pond, 2 adjust sedimentation basin, 3 hydrolysis acidification pools, 4 aerobic tanks, 5 anaerobic ponds, 6 aeration membrane cisternas, 7 air blast
Machine, 8 COD sensors, 9 controllers, 10 sludge-tanks, 11 carbon source adding sets, 12 submersible sewage pumps, 13,14 detecting heads, 15 dephosphorization agents
Adding set, 16,17 delivery pumps.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
As shown in Figure 1, give the schematic diagram of the sewage disposal system for low, high carbon-nitrogen ratio of the invention, by according to
The secondary grid pond 1 handled sanitary sewage adjusts sedimentation basin 2, hydrolysis acidification pool 3, aerobic tank 4, anaerobic pond 5 and aeration film
Pond 6 and air blower 7, controller 9, sludge-tank 10, carbon source adding set 11 and dephosphorization agent adding set 15 are set in grid pond 1
It is equipped with the grid being filtered to thick in sewage, thin sundries, sewage is discharged into adjusting sedimentation basin 2 by grid pond 1 through pipeline.Lattice
It is provided with COD sensor 8 on pipeline between grid pond 1 and adjusting sedimentation basin 2, to realize the detection to COD content in sewage, together
When in order to realize being sufficiently mixed of dephosphorization agent and sewage, react, dephosphorization agent adding set 15 is to added by adjusting in sedimentation basin
Dephosphorization agent is also implanted into grid pond 1 and adjusts in the pipeline between sedimentation basin 2, and can wear in the front end setting for adjusting sedimentation basin 2
Kong Guan, being sufficiently mixed and generating and deposit in order to dephosphorization agent and phosphate from sewage.It adjusts and is arranged in sedimentation basin 2
There is submersible sewage pump 12, submersible sewage pump 12 is used to for the sewage adjusted in sedimentation basin 2 being evacuated in hydrolysis acidification pool 3, and submersible sewage pump 12 is settable
At 1/3 position height for adjusting sedimentation basin 2.
The sewage that hydrolysis acidification pool 3 is discharged enters aerobic tank 4 through pipeline, and the sewage that aerobic tank 4 is discharged enters through pipeline to be detested
Oxygen pond 5, the sewage that anaerobic pond 5 is discharged enter aeration membrane cisterna 6 through pipeline.Air blower 7 is aerated pipeline and exchanges section sedimentation basin 2, good
Oxygen pond 4 and aeration membrane cisterna 6 carry out aeration operation, and aeration can not only increase the oxygen content in water, but also also achieve to sewage
Stirring action.Dephosphorization agent adding set 15 not only adds dephosphorization agent into adjusting sedimentation basin 2, but also is added into aerobic tank 4
Dephosphorization agent；Carbon source adding set 11 is used to that carbon source to be added in first anaerobic pond 5, to supplement carbon when COD content is lower in sewage
The consumption in source.The reflux pipeline that delivery pump 16 is set between aerobic tank 4 and hydrolysis acidification pool 3 is connected, aeration membrane cisterna 6 with
Also the reflux pipeline that delivery pump 17 is set between hydrolysis acidification pool 3 is connected, so as to will aerobic tank 4 and aeration membrane cisterna 6 in
Solution is back in hydrolysis acidification pool 3.It adjusts in sedimentation basin 2 and is provided with the detecting head 13 detected to its liquid level, aeration film
The detecting head 14 detected to its liquid level is provided in pond 6.Controller 9 is to submersible sewage pump 12, two delivery pumps (16,17), carbon source
The operating status of adding set 11 and dephosphorization agent adding set 15 is controlled.
Sewage is related with COD content in sewage in the reaction in hydrolysis acidification pool 3, when the COD content in sewage is lower,
Two delivery pumps (16,17) do not work, and aerobic tank 4 and aeration membrane cisterna 6 do not return to liquid into hydrolysis acidification pool 3, and sewage is in water
Only larger molecular organics difficult to degrade are converted to degradable small organic molecule in solution acidification pool 3.When the COD in sewage contains
When measuring higher, the partially liq in aerobic tank 4 and anaerobic pond 5 is back in hydrolysis acidification pool 3 through reflux pipeline, utilizes hydrolysis acid
Anaerobic environment, the carbon source progress in sewage and the nitrate nitrogen returned in water for changing pond 3 carry out denitrification denitrogenation, realize going for ammonia nitrogen
It removes.
After sewage enters aerobic tank 4, the aerobic bacteria in sewage consumes the organic matter in water under aeration effect, and in nitrous
It is nitrate nitrogen, nitrite nitrogen by mineralized nitrogen under the action of changing bacterium, nitrifier.Sewage into anaerobic pond 5, when COD contains in sewage
When measuring lower, then carbon source is added into anaerobic pond 5 for carbon source adding set 11, and the denitrification in anaerobic pond is sharp under anaerobic environment
Denitrification denitrogenation is carried out with carbon source.Sewage by anaerobic pond 5 enter aeration membrane cisterna 6 in after, further to the organic matter in water into
Row degradation；The production water of aeration membrane cisterna 6 is evacuated in sterilization pool through water pump, kills most pathogens and microorganism, then be discharged by
Receive water body.The shown phosphorus containing sludge that generates and the raw suspended particulate substance being retained down of aeration membrane cisterna and micro- of adjusting in sedimentation basin 2
Biological sludge is discharged by sludge pipeline into sludge-tank 10, is precipitated, is concentrated, the supernatant liquor of sludge-tank in sludge-tank 10
It is back in hydrolysis acidification pool 3.
Shown in be hung with composite filling in hydrolysis acidification pool 3, aerobic tank 4 and anaerobic pond 5, the diameter of composite filling is
150mm, spacing 80mm.Residence time of the sewage in hydrolysis acidification pool 3 is 5~8h, and the residence time in aerobic tank 4 is
8~12h, the residence time in anaerobic pond 5 are 2~4h, and the residence time in aeration membrane cisterna 6 is 4~6h；It is aerated in membrane cisterna
The sludge sludge age of selection is 25~35 days.
The sewage treatment process of sewage disposal system suitable for low, high carbon-nitrogen ratio of the invention, by following steps come
It realizes:
A) retention of solid matter and dephosphorization, sewage to be processed initially enter grid pond, and the grid in grid pond will be in sewage
Slightly, carefully sundries is intercepted；Sewage enters adjust sedimentation basin after, make under the action of dephosphorization agent calcium phosphate precipitation in sewage,
Separation；
B) degradation and/or anti-nitration reaction, controller detects the COD content in sewage by COD sensor, as COD in sewage
When content is lower than setting value, sewage converts larger molecular organics difficult to degrade in hydrolysis acidification pool degradable small molecule
Organic matter；When COD content is higher than setting value in sewage, sewage is not only organic by macromolecular difficult to degrade in hydrolysis acidification pool
Object is converted into degradable small organic molecule, and controller also opens delivery pump, by the liquid in aerobic tank and aeration membrane cisterna
Body is supplemented in hydrolysis acidification pool as carbon source, to carry out denitrification denitrogenation using the anaerobic condition of hydrolysis acidification pool and carbon source；
C) aerobic reaction, after sewage flows into aerobic tank by hydrolysis acidification pool, the microorganism in aerobic tank is abundant under aeration condition
Organic matter in degradation sewage, and under the action of nitrococcus, nitrifier, it is nitrate nitrogen, nitrite nitrogen by mineralized nitrogen；
D) anaerobic reaction, after sewage enters anaerobic pond by aerobic tank, according to the COD content in sewage detected, to control carbon
The carbon source amount that source adding set is added into anaerobic pond, the denitrification in anaerobic pond are carried out under anaerobic environment using carbon source anti-
Nitrify denitrogenation；
E) water level control, controller detect the water level for adjusting sedimentation basin and being aerated in membrane cisterna by detecting head, when adjusting sedimentation basin
In liquid level it is too high or too low when, then the flow that draws water of submersible sewage pump is increased separately and reduces, to control to adjust the sewage of sedimentation basin
In liquid level appropriate；When the liquid level being aerated in membrane cisterna is too high or too low, then the pump-out of submersible sewage pump is respectively reduced and increases,
So that the liquid level that will be aerated in membrane cisterna remains in place；
F) discharge of sludge and clear liquid reflux adjust the phosphorus containing sludge that sedimentation basin generates and the suspension that aeration membrane cisterna is retained down
Particulate matter and microorganism sludge are discharged by sludge pipeline into sludge-tank, in sludge-tank precipitate, be concentrated, sludge-tank it is upper
Layer clear liquid is back to hydrolysis acidification pool；
G) water body disinfection and discharge, water pump are evacuated to the water body that membrane cisterna generates is aerated in sterilization pool, and are killed in sterilization pool big absolutely
Fraction of pathogens bacterium and microorganism, then it is discharged into receiving water body.
Claims (6)
1. a kind of sewage disposal system suitable for low, high carbon-nitrogen ratio, including treatment sewage followed by grid pond (1),
Adjust sedimentation basin (2), hydrolysis acidification pool (3), aerobic tank (4), anaerobic pond (5) and aeration membrane cisterna (6) and air blower (7), dirt
Mud sump (10), dephosphorization agent adding set (15), carbon source adding set (11) and controller (9)；It is characterized by: grid pond and tune
It is provided with the COD sensor (8) measured to the COD content of sewage on pipeline between section sedimentation basin, sedimentation basin is adjusted, exposes
The detecting head (13,14) detected to water level is provided in air film pond, controller is through detection line and COD sensor, detection
Head is connected；Adjust the submersible sewage pump (12) being provided in sedimentation basin by sewage lifting therein into hydrolysis acidification pool, air blower
Be connected through aeration pipeline with sedimentation basin, aerobic tank, aeration membrane cisterna is adjusted, to realize aeration, aerobic tank and hydrolysis acidification pool it
Between, aeration membrane cisterna and hydrolysis acidification pool between communicated by being provided with the reflux pipeline of delivery pump (16,17)；Dephosphorization agent addition
Device is connected through pipeline with adjusting sedimentation basin and aerobic tank, and to realize the addition of dephosphorization agent, carbon source adding set is through pipeline
It is communicated with anaerobic pond, to realize the addition of carbon source；Adjusting sedimentation basin, aeration membrane cisterna pass through sludge pipeline and communicate with sludge-tank,
The top of sludge-tank is communicated through reflux pipeline with hydrolysis acidification pool, to realize the reflux of sludge-tank clear liquid at the middle and upper levels；Controller warp
Control pair submersible sewage pump, delivery pump, dephosphorization agent adding set and carbon source adding set working condition controlled.
2. the sewage disposal system according to claim 1 suitable for low, high carbon-nitrogen ratio, it is characterised in that: the grid
Pond is provided with the grid for filtering out sundries in sewage in (1), and the front end for adjusting sedimentation basin is provided with perforated pipe, and dephosphorization adding set will
Dephosphorization agent is added to grid pond and adjusts in the pipeline between sedimentation basin, so that dephosphorization agent and the phosphate in sewage are sufficiently mixed
And generate precipitating；Submersible sewage pump (12) is set at 1/3 height for adjusting sedimentation basin；The hydrolysis acidification pool (3), aerobic tank (4)
Be hung with composite filling in anaerobic pond (5), the diameter of composite filling is 150mm, spacing 80mm.
3. the sewage disposal system according to claim 1 or 2 suitable for low, high carbon-nitrogen ratio, it is characterised in that: sewage exists
Residence time in hydrolysis acidification pool (3) is 5~8h, and the residence time in aerobic tank (4) is 8~12h, in anaerobic pond (5)
In residence time be 2~4h, aeration membrane cisterna (6) in residence time be 4~6h；The sludge sludge age selected in aeration membrane cisterna
It is 25~35 days.
4. the sewage disposal system according to claim 1 or 2 suitable for low, high carbon-nitrogen ratio, it is characterised in that: hydrolysis acid
Being provided in change pond (3), anaerobic pond (5) prevents sludge settling, makes the agitating device for being sufficiently mixed and contacting with sludge into water；
Air blower realize adjust sedimentation basin (2), aerobic tank (4) and aeration membrane cisterna (6) be aerated, provide oxygen for microorganism while,
Also sewage is made to be sufficiently mixed and contact with sludge.
5. the sewage disposal system according to claim 1 or 2 suitable for low, high carbon-nitrogen ratio, it is characterised in that: including disappearing
The production water for being aerated membrane cisterna is evacuated in sterilization pool by malicious pond and the water pump being set in aeration membrane cisterna (6), water pump, kills the disease in water
It is discharged into receiving water body again after opportunistic pathogen and microorganism.
6. a kind of sewage treatment process based on the sewage disposal system described in claim 1 suitable for low, high carbon-nitrogen ratio,
It is characterized in that, is realized by following steps:
A) retention of solid matter and dephosphorization, sewage to be processed initially enter grid pond, and the grid in grid pond will be in sewage
Slightly, carefully sundries is intercepted；Sewage enters adjust sedimentation basin after, make under the action of dephosphorization agent calcium phosphate precipitation in sewage,
Separation；
B) degradation and/or anti-nitration reaction, controller detects the COD content in sewage by COD sensor, as COD in sewage
When content is lower than setting value, sewage converts larger molecular organics difficult to degrade in hydrolysis acidification pool degradable small molecule
Organic matter；When COD content is higher than setting value in sewage, sewage is not only organic by macromolecular difficult to degrade in hydrolysis acidification pool
Object is converted into degradable small organic molecule, and controller also opens delivery pump, by the liquid in aerobic tank and aeration membrane cisterna
Body is supplemented in hydrolysis acidification pool as carbon source, to carry out denitrification denitrogenation using the anaerobic condition of hydrolysis acidification pool and carbon source；
C) aerobic reaction, after sewage flows into aerobic tank by hydrolysis acidification pool, the microorganism in aerobic tank is abundant under aeration condition
Organic matter in degradation sewage, and under the action of nitrococcus, nitrifier, it is nitrate nitrogen, nitrite nitrogen by mineralized nitrogen；
D) anaerobic reaction, after sewage enters anaerobic pond by aerobic tank, according to the COD content in sewage detected, to control carbon
The carbon source amount that source adding set is added into anaerobic pond, the denitrification in anaerobic pond are carried out under anaerobic environment using carbon source anti-
Nitrify denitrogenation；
E) water level control, controller detect the water level for adjusting sedimentation basin and being aerated in membrane cisterna by detecting head, when adjusting sedimentation basin
In liquid level it is too high or too low when, then the flow that draws water of submersible sewage pump is increased separately and reduces, to control to adjust the sewage of sedimentation basin
In liquid level appropriate；When the liquid level being aerated in membrane cisterna is too high or too low, then the pump-out of submersible sewage pump is respectively reduced and increases,
So that the liquid level that will be aerated in membrane cisterna remains in place；
F) discharge of sludge and clear liquid reflux adjust the phosphorus containing sludge that sedimentation basin generates and the suspension that aeration membrane cisterna is retained down
Particulate matter and microorganism sludge are discharged by sludge pipeline into sludge-tank, in sludge-tank precipitate, be concentrated, sludge-tank it is upper
Layer clear liquid is back to hydrolysis acidification pool；
G) water body disinfection and discharge, water pump are evacuated to the water body that membrane cisterna generates is aerated in sterilization pool, and are killed in sterilization pool big absolutely
Fraction of pathogens bacterium and microorganism, then it is discharged into receiving water body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN111675435A (en) * | 2020-06-17 | 2020-09-18 | 江苏中车环保设备有限公司 | Integrated sewage treatment equipment based on A/O-MBBR (anaerobic-anoxic-aerobic-moving bed biofilm reactor) process and sewage treatment method |
| CN115259572A (en) * | 2022-08-24 | 2022-11-01 | 江苏力鼎环保装备有限公司 | Single household sewage treatment equipment and treatment process thereof |
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| CN115259572A (en) * | 2022-08-24 | 2022-11-01 | 江苏力鼎环保装备有限公司 | Single household sewage treatment equipment and treatment process thereof |
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| CN109081509B (en) | 2021-06-25 |
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