CN109694132B - Sewage treatment method of sequencing batch temperature and pressure control biological membrane - Google Patents
Sewage treatment method of sequencing batch temperature and pressure control biological membrane Download PDFInfo
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- CN109694132B CN109694132B CN201910134536.5A CN201910134536A CN109694132B CN 109694132 B CN109694132 B CN 109694132B CN 201910134536 A CN201910134536 A CN 201910134536A CN 109694132 B CN109694132 B CN 109694132B
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- 239000010865 sewage Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000012528 membrane Substances 0.000 title claims abstract description 14
- 238000012163 sequencing technique Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 109
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 10
- 239000011574 phosphorus Substances 0.000 claims abstract description 10
- 238000003860 storage Methods 0.000 claims description 31
- 239000007789 gas Substances 0.000 claims description 17
- 238000011001 backwashing Methods 0.000 claims description 16
- 238000005273 aeration Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 8
- 238000004062 sedimentation Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 4
- 239000000645 desinfectant Substances 0.000 claims description 3
- 206010021143 Hypoxia Diseases 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims description 2
- 230000004927 fusion Effects 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 11
- 239000001301 oxygen Substances 0.000 abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- 239000010802 sludge Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 206010033799 Paralysis Diseases 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 230000008953 bacterial degradation Effects 0.000 abstract 1
- 238000009826 distribution Methods 0.000 description 9
- 230000004071 biological effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000003301 hydrolyzing effect Effects 0.000 description 3
- 230000020477 pH reduction Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 241001148470 aerobic bacillus Species 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2209/03—Pressure
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- Biodiversity & Conservation Biology (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
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Abstract
The invention belongs to the technical field of sewage treatment, and discloses a sewage treatment method of a sequencing batch temperature and pressure control biological membrane; the biological phosphorus removal and the nitrogen removal are separated at different time intervals and are not interfered with each other; the biological strains and the dissolved oxygen in the tank body are distributed uniformly in space; the service life of active strains is prolonged under the condition that the equipment does not run for a certain time, so that the condition that the strains die in large quantity to cause system paralysis and the strains need to be cultured again is avoided; can stably remove BOD, TP and NH3-N, SS, and under normal conditions, the water quality of the outlet water at the end of the/anoxic/aerobic tank can reach the first grade B standard (GB 18918-2002); the sludge backflow and the mixed liquid backflow are not needed, the shock resistance load is high, and the equipment operation power consumption is low; the tank body has no easily damaged equipment, and is simple to maintain and low in cost; the temperature of the pool body is stable, and the activity of the strains can be effectively improved; in the aerobic stage, the bacteria degradation capability is stronger because the air pressure is higher and the dissolved oxygen concentration is high.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment method of a sequencing batch temperature and pressure control biological membrane.
Background
Currently, the current state of the art commonly used in the industry is such that:
the small-scale sewage is mainly characterized by small water quantity, time-averaged water quantity and unstable water quality. At present, the small-scale sewage treatment in the market adopts a biomembrane method, and the main processes are hydrolytic acidification, contact oxidation, MBR and the like.
Hydrolytic acidification and contact oxidation, under the anoxic state, the microorganism hydrolytic acidification effectively degrades macromolecules in the sewage into micromolecules, and the treatment load of the subsequent working section is reduced. Under the aerobic state, the aerobic bacteria effectively degrade pollutants in the sewage so as to purify the effluent reaching the standard.
MBR, also called membrane bioreactor, is a water treatment technology combining an activated sludge process and a membrane separation technology. Because the gaps of the membrane are small, the process mainly adopts a forced filtration mode to isolate pollutants from clear water.
In summary, the problems of the prior art are as follows:
(1) the time-averaged water quantity and the water quality are unstable, most of the prior art adopts liquid level control to feed water, so that the system is idle and irregular in operation, and the biological adaptability is weak.
(2) The effect of biological phosphorus removal is poor, sludge reflux and mixed liquid and chemical phosphorus removal are required to be arranged in order to ensure the nitrogen and phosphorus removal and the stability of the system, and the treatment running cost of sewage with relatively small water volume is lower.
(3) The strength of the biological activity is closely related to temperature and dissolved oxygen, and the treatment effect of the system is poor under the condition of low temperature in winter, and the biological activity sometimes does not reach the standard.
(4) The system often can cause the dead angle because of water distribution and gas distribution system is inhomogeneous, reduces the effective processing volume of system.
(5) The start and stop of the equipment are irregular, and the equipment submerged in the sewage is easy to damage and troublesome to maintain.
The difficulty of solving the technical problems is as follows:
(1) the time-averaged water quantity and the water quality are unstable, so that the system is idle and runs irregularly.
(2) In order to ensure the denitrification and dephosphorization and the stability of the system, the prior art can not be further simplified and optimized.
(3) In order to save construction and operation cost, the prior art can not ensure the operation temperature of the system and the stability of dissolved oxygen.
(4) The prior art has the advantages that water inlet represents the start of sewage treatment, water inlet and treatment are carried out simultaneously, and a water distribution and gas distribution system can only be optimized as far as possible to ensure the reduction of dead angles but cannot stop the occurrence.
(5) The system is idle and the operation irregularity causes the corresponding irregularity of the start and stop of the equipment, and the damage probability of the equipment soaked in water for a long time is difficult to avoid.
The idea of the sewage treatment method for solving the technical problems is as follows:
(1) the water is periodically fed once a day, and because the daily average water quantity is small, a temporary storage pool can be arranged, and sewage is temporarily stored for the next period and is fed into the sewage treatment system.
(2) The biological phosphorus removal and the nitrogen removal are independently operated in different time periods, and phosphorus removal is performed in an anaerobic/aerobic time period, and nitrogen removal is performed in an anoxic/aerobic time period without mutual interference.
(3) The system is totally closed, and the air pressure and the temperature of the system are controlled through the time control valve, so that the change of the external environment is prevented from influencing the regularity and the stability of the system. The system air pressure and temperature are increased, and the influence on the concentration of dissolved oxygen is very obvious. Because the water inlet period is 24 hours, relatively long and the system is closed, the temperature can be provided by the heat generated by the strain itself.
(4) The system is one-time water inlet and one-time water outlet, and is lifted by air pressure control, and the system has no interference of water inlet and water outlet in a sewage treatment section and can reach a complete mixing reaction state.
(5) The system has no vulnerable electronic equipment to be soaked in sewage, the periodical operation ensures the start and stop regularity of the equipment, and the damage and maintenance cost of the equipment is greatly reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a sewage treatment method of sequential batch temperature and pressure control biological membranes.
The invention is realized in this way, a sequencing batch temperature and pressure control biological membrane sewage treatment method, the sequencing batch temperature and pressure control biological membrane sewage treatment method includes:
in the first step, when water is fed, the time control valves of S2#, S3#, G5# are opened, and the time control valves of S1# and G1# are closed. The pressurizing air compressor is started, and when the water level of the temporary storage pool is lower than the lowest water level, the air compressor is automatically stopped;
secondly, after 2 hours of water inflow, the time control valves of S1# and G1# are opened, and the time control valves of S2#, S3# and G5# are closed; under the action of gravity, the water of the spiral tube backwashing tank flows back to backwash the spiral tube; the sewage in the next period enters a temporary storage tank for temporary storage; g4# time control valve is opened, G6# time control valve is closed; the gas dissolving device starts aeration for half an hour and then stops;
thirdly, anaerobic treatment is carried out for 6 hours, a G4# time control valve is closed, an air dissolving device starts aeration for 3.5 hours and then stops, and phosphorus removal reaction is completed;
fourthly, opening a G4# time control valve, and carrying out oxygen deficiency for 4 hours; g4# time control valve is closed, the gas dissolving device starts aeration for 5 hours and then stops, and denitrification reaction is completed;
fifthly, opening a G4# time control valve, standing and precipitating for 1 hour to complete mud-water separation;
sixthly, closing a G4# time control valve, opening S4# and G6# time control valves, starting a pressurizing air compressor, and when the water level of the anaerobic/anoxic/aerobic pool is lower than the lowest water level, automatically stopping the air compressor to finish water outlet;
seventhly, opening a G4# time control valve, closing S4# and G6# time control valves, and backwashing the spiral pipe by backflow of water in a spiral pipe backwashing tank under the action of gravity, wherein water inflow in the next period begins;
and step eight, wherein G2# is a temperature control valve, G3# is a pressure control valve, and the valves are in a closed state under normal conditions. When the temperature is higher than 40 ℃, opening a temperature control valve; when the air pressure is higher than 0.4MPA, the air pressure valve is opened, and when the air pressure is lower than 0.3MPA, the air pressure valve is closed.
Another object of the present invention is to provide a sequential batch temperature and pressure control biofilm sewage treatment system for implementing the sequential batch temperature and pressure control biofilm sewage treatment method, wherein the sequential batch temperature and pressure control biofilm sewage treatment system comprises: a comprehensive room, a temporary storage tank, an anaerobic/anoxic/aerobic tank and a clean water tank;
the comprehensive room provides air to the temporary storage tank and the anaerobic/anoxic/aerobic tank through an air compressor, provides disinfectant to the clean water tank through a dosing device, the clean water of the clean water tank is connected with a circulating water pump through a return pipeline, and the circulating water and the air provided by the air compressor are fully mixed in a dissolved air tank to form dissolved air water; then providing dissolved gas water to the anaerobic/anoxic/aerobic pool;
the temporary storage tank is used for temporarily storing the primarily precipitated sewage, the air pressure of the temporary storage tank is controlled by combining G1 with G5 with main function time, and the temporary storage tank does not have the function of fusing the sewage and the air; the sewage after primary sedimentation enters a temporary storage tank through S1; the sewage after primary sedimentation enters an anaerobic/anoxic/aerobic tank through S3 and S2.
Further, air enters a perforation air distribution system of the anaerobic/anoxic/aerobic pool through G5 and G6, and dissolved air water sent by the dissolved air tank passes through a dissolved air water pipeline and enters a pool bottom releaser of the anaerobic/anoxic/aerobic pool; the anaerobic/anoxic/aerobic tank is provided with a spiral pipe connected with a spiral pipe backwashing tank at one side close to the clean water tank, and the spiral pipe backwashing tank is connected with the clean water tank through S4.
In summary, the advantages and positive effects of the invention are: the biological phosphorus removal and nitrogen removal are separated at different time intervals and do not interfere with each other; the biological strains and the dissolved oxygen in the tank body are distributed uniformly in space; the service life of active strains is prolonged under the condition that the equipment does not run for a certain time, so that the condition that the strains die in large quantity to cause system paralysis and the strains need to be cultured again is avoided; can stably remove BOD, TP and NH3-N, SS, and under normal conditions, the water quality of the outlet water at the tail end of the/anoxic/aerobic tank can reach the first grade B standard of pollutant discharge Standard of municipal wastewater treatment plant (GB 18918-2002); the sludge backflow and the mixed liquid backflow are not needed, the shock resistance load is high, and the equipment operation power consumption is low; the tank body has no easily damaged equipment, and is simple to maintain and low in cost; the temperature of the pool body is stable, and the activity of the strains can be effectively improved; in the aerobic stage, the degradation capability of the strains is stronger because the air pressure is higher and the dissolved oxygen concentration is high; the time is effectively distributed, and the time control regularity of the system ensures the biochemical stability of the strains; the sewage is lifted through air pressure control, so that the problems of blockage and easy damage in the lifting of a conventional water pump are solved; the temperature of the system is controlled by the self heat production of the strain, so that the influence of the biological activity on the temperature due to the change of the external environment is avoided as much as possible; through air pressure control, the concentration of dissolved oxygen is increased under a high pressure state, and the high efficiency of biological activity is ensured.
The invention effectively distributes time and the time control regularity of the system, and ensures the biochemical stability of the strains; the sewage is lifted through air pressure control, so that the problems of blockage and easy damage in the lifting of a conventional water pump are solved; the temperature of the system is controlled by the self heat production of the strain, so that the influence of the biological activity on the temperature due to the change of the external environment is avoided as much as possible; through air pressure control, the concentration of dissolved oxygen is increased under a high pressure state, and the high efficiency of biological activity is ensured.
Drawings
FIG. 1 is a flow chart of a sequential batch temperature and pressure control biological membrane sewage treatment method provided by the embodiment of the invention.
FIG. 2 is a schematic structural diagram of a sequential batch temperature and pressure control biological membrane sewage treatment system according to an embodiment of the present invention.
Fig. 3 is a plan view of a perforated gas distribution system according to an embodiment of the present invention.
FIG. 4 is a flat layout of a releaser provided by an embodiment of the present invention.
Figure 5 is a manhole floor plan provided by an embodiment of the present invention.
In the figure: 1. a water circulating pump; 2. a water-gas mixing container; 3. valve G1 #; 4. a dosing device; 5. a comprehensive room; 6. air compressor 1 #; 7. air compressor 2 #; 8. a temporary storage pool; 9. g5# valve; 10. 1# of a spiral pipe backwashing tank; 11. valve S2 #; 12. valve G6 #; 13. an anaerobic tank/an anoxic tank/an aerobic tank; 14. spiral tube backwash tank 2 #; 15. valve S4 #; 16 clean water pool; 17. valve G4 #; 18. valve G3 #; 19. valve G2 #; 20. valve S1 #; 21. valve S2 #; 22. a spiral tube; 23. a perforation gas distribution system 1 #; 24. a perforation gas distribution system 2 #; 25. a pool bottom releaser.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description of the principles of the invention is provided in connection with the accompanying drawings.
As shown in fig. 1, the method for treating sewage by sequential batch temperature and pressure control biomembrane provided by the embodiment of the invention comprises the following steps:
s101: when water enters, the time control valves of S2#, S3#, G5# are opened, and the time control valves of S1# and G1# are closed. The pressurizing air compressor is started, and when the water level of the temporary storage pool is lower than the lowest water level, the air compressor is automatically stopped;
s102: after 2 hours of water inflow, the time control valves of S1# and G1# are opened, and the time control valves of S2#, S3# and G5# are closed. Under the action of gravity, the water of the spiral tube backwashing tank flows back to backwash the spiral tube; and the sewage in the next period enters a temporary storage tank for temporary storage. G4# time control valve is opened, G6# time control valve is closed; the gas dissolving device starts aeration for half an hour and then stops;
s103: anaerobic treatment is carried out for 6 hours, a G4# time control valve is closed, an air dissolving device starts aeration for 3.5 hours and then stops, and phosphorus removal reaction is completed;
s104: g4# time control valve is opened, and oxygen is lacked for 4 hours; g4# time control valve is closed, the gas dissolving device starts aeration for 5 hours and then stops, and denitrification reaction is completed;
s105: g4# time control valve is opened, and the sediment is settled for 1 hour to complete mud-water separation;
s106: g4# time control valve is closed, S4# and G6# time control valves are opened, the supercharging air compressor is started, and when the water level of the anaerobic/anoxic/aerobic pool is lower than the lowest water level, the air compressor is automatically stopped to finish water outlet;
s107: g4# time control valve is opened, S4# and G6# time control valves are closed, under the action of gravity, water in a spiral tube backwashing tank flows backwards to backwash a spiral tube, and water feeding in the next period starts;
s108: g2# is a temperature control valve, G3# is a pressure control valve, and the valves are in a closed state under normal conditions. When the temperature is higher than 40 ℃, opening a temperature control valve; when the air pressure is higher than 0.4MPA, the air pressure valve is opened, and when the air pressure is lower than 0.3MPA, the air pressure valve is closed.
The application of the principles of the present invention will now be described in further detail with reference to the accompanying drawings.
As shown in fig. 2, the sequential batch temperature and pressure control biological membrane sewage treatment system provided by the embodiment of the present invention includes: a comprehensive room, a temporary storage tank, an anaerobic/anoxic/aerobic tank and a clean water tank. The comprehensive room provides air to the temporary storage pool and the anaerobic/anoxic/aerobic pool through an air compressor, provides disinfectant to the clean water pool through a dosing device, clean water of the clean water pool is connected with a circulating water pump through a return pipeline, and the circulating water and the air provided by the air compressor are fully mixed in a dissolved air tank to form dissolved air water; then providing the dissolved gas water to the anaerobic/anoxic/aerobic tank. The temporary storage tank is used for temporarily storing the primarily precipitated sewage, and the G1 and the G5 are combined with the main function time to control the air pressure of the temporary storage tank, so that the temporary storage tank does not have the function of fusing the sewage and the air. And the primarily settled sewage enters a temporary storage tank through S1. The sewage after primary sedimentation enters an anaerobic/anoxic/aerobic tank through S3 and S2. (when S1 is opened, S2 and S3 are closed, sewage enters a temporary storage tank, when S2 is opened, S1 and S3 are closed, sewage enters a spiral tube backwashing tank, when S3 is opened, and when S1/S2 is closed, sewage enters an anaerobic/anoxic/aerobic tank) air enters a perforation air distribution system of the anaerobic/anoxic/aerobic tank through G5 and G6, and dissolved air water sent from the dissolved air tank passes through a pool bottom releaser of the dissolved air water pipeline water inlet anaerobic/anoxic/aerobic tank. The anaerobic/anoxic/aerobic tank is provided with a spiral pipe connected with a spiral pipe backwashing tank at one side close to the clean water tank, and the spiral pipe backwashing tank is connected with the clean water tank through S4.
In the embodiment of the invention, when water is fed, the S2#, S3#, G5# time control valves are opened, and the S1# and G1# time control valves are closed. The booster air compressor starts, and when the pond water level of keeping in is less than minimum water level, the air compressor machine automatic stop.
In the embodiment of the invention, after water is fed for 2 hours, the S1# and G1# time control valves are opened, and the S2#, S3# and G5# time control valves are closed. Under the action of gravity, the water of the spiral tube backwashing tank flows back to backwash the spiral tube. The sewage from the next period enters a temporary storage tank for temporary storage. G4# time control valve is opened, G6# time control valve is closed. The gas dissolving device starts aeration and stops after half an hour.
In the embodiment of the invention, the anaerobic reaction is carried out for 6 hours, the time control valve G4# is closed, the aeration is started by the air dissolving device for 3.5 hours, and then the air dissolving device stops, thus completing the dephosphorization reaction.
In the embodiment of the invention, the G4# time control valve is opened, and oxygen is lacked for 4 hours; g4# time control valve is closed, the gas dissolving device starts aeration for 5 hours and then stops, and the denitrification reaction is completed.
In the embodiment of the invention, the G4# time control valve is opened, and the sludge and water are separated after the sedimentation is carried out for 1 hour in a static way.
In the embodiment of the invention, the G4# time control valve is closed, the S4# time control valve and the G6# time control valve are opened, the booster air compressor is started, and when the water level of the anaerobic/anoxic/aerobic pool is lower than the lowest water level, the air compressor is automatically stopped to finish water outlet.
G4# time control valve is opened, S4# and G6# time control valves are closed, under the action of gravity, water in the spiral tube backwashing tank flows backwards to backwash the spiral tube, and water inflow in the next period starts.
G2# is a temperature control valve, G3# is a pressure control valve, and the valves are in a closed state under normal conditions. When the temperature is higher than 40 ℃, opening a temperature control valve; when the air pressure is higher than 0.4MPA, the air pressure valve is opened, and when the air pressure is lower than 0.3MPA, the air pressure valve is closed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (1)
1. A sequencing batch temperature and pressure control biological membrane sewage treatment method is characterized by comprising the following steps:
firstly, when water is fed, time control valves of S2#, S3#, G5# are opened, and time control valves of S1# and G1# are closed; the pressurizing air compressor is started, and when the water level of the temporary storage pool is lower than the lowest water level, the air compressor is automatically stopped;
secondly, after 2 hours of water inflow, the time control valves of S1# and G1# are opened, and the time control valves of S2#, S3# and G5# are closed; under the action of gravity, the water of the spiral tube backwashing tank flows back to backwash the spiral tube; the sewage in the next period enters a temporary storage tank for temporary storage; g4# time control valve is opened, G6# time control valve is closed; the gas dissolving device starts aeration for half an hour and then stops;
thirdly, anaerobic treatment is carried out for 6 hours, a G4# time control valve is closed, an air dissolving device starts aeration for 3.5 hours and then stops, and phosphorus removal reaction is completed;
fourthly, opening a G4# time control valve, and carrying out oxygen deficiency for 4 hours; g4# time control valve is closed, the gas dissolving device starts aeration for 5 hours and then stops, and denitrification reaction is completed;
fifthly, opening a G4# time control valve, standing and precipitating for 1 hour to complete mud-water separation;
sixthly, closing a G4# time control valve, opening S4# and G6# time control valves, starting a pressurizing air compressor, and when the water level of the anaerobic/anoxic/aerobic pool is lower than the lowest water level, automatically stopping the air compressor to finish water outlet;
seventhly, opening a G4# time control valve, closing S4# and G6# time control valves, and backwashing the spiral pipe by backflow of water in a spiral pipe backwashing tank under the action of gravity, wherein water inflow in the next period begins;
eighthly, G2# is a temperature control valve, G3# is a pressure control valve, and the valves are in a closed state under normal conditions; when the temperature is higher than 40 ℃, opening a temperature control valve; when the air pressure is higher than 0.4MPA, the air pressure valve is opened, and when the air pressure is lower than 0.3MPA, the air pressure valve is closed;
the sewage treatment system of sequencing batch temperature and pressure control biomembrane includes: a comprehensive room, a temporary storage tank, an anaerobic/anoxic/aerobic tank and a clean water tank;
the comprehensive room provides air to the temporary storage tank and the anaerobic/anoxic/aerobic tank through an air compressor, provides disinfectant to the clean water tank through a dosing device, the clean water of the clean water tank is connected with a circulating water pump through a return pipeline, and the circulating water and the air provided by the air compressor are fully mixed in a dissolved air tank to form dissolved air water; then providing dissolved gas water to the anaerobic/anoxic/aerobic pool;
the temporary storage tank is used for temporarily storing the primarily precipitated sewage and enters the anaerobic/anoxic/aerobic tank together with the next water inlet period, and the G1# and the G5# combine with the main function time to control the air pressure of the temporary storage tank without the fusion function of the sewage and the air; the sewage after primary sedimentation enters a temporary storage tank through S1 #; and the sewage after primary sedimentation enters an anaerobic/anoxic/aerobic tank through S3# and S2 #.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910134536.5A CN109694132B (en) | 2019-02-23 | 2019-02-23 | Sewage treatment method of sequencing batch temperature and pressure control biological membrane |
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| CN201910134536.5A CN109694132B (en) | 2019-02-23 | 2019-02-23 | Sewage treatment method of sequencing batch temperature and pressure control biological membrane |
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| CN109694132A CN109694132A (en) | 2019-04-30 |
| CN109694132B true CN109694132B (en) | 2021-12-17 |
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