CN109678297B - Sequencing batch sectional type biomembrane process sewage treatment system and sewage treatment method - Google Patents
Sequencing batch sectional type biomembrane process sewage treatment system and sewage treatment method Download PDFInfo
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- CN109678297B CN109678297B CN201910038218.9A CN201910038218A CN109678297B CN 109678297 B CN109678297 B CN 109678297B CN 201910038218 A CN201910038218 A CN 201910038218A CN 109678297 B CN109678297 B CN 109678297B
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- 239000010865 sewage Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000012163 sequencing technique Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 192
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 29
- 239000010802 sludge Substances 0.000 claims abstract description 23
- 230000001105 regulatory effect Effects 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 9
- 239000011574 phosphorus Substances 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 19
- 230000005484 gravity Effects 0.000 claims description 14
- 238000005273 aeration Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 13
- 241000894006 Bacteria Species 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000004065 wastewater treatment Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000249 desinfective effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000006396 nitration reaction Methods 0.000 claims description 3
- 230000001546 nitrifying effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 2
- 206010021143 Hypoxia Diseases 0.000 claims 2
- 238000001914 filtration Methods 0.000 abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 6
- 238000004062 sedimentation Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 206010033799 Paralysis Diseases 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 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
- 238000005191 phase separation Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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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- 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
- 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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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (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)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a sequencing batch sectional type biomembrane process sewage treatment system and a sewage treatment method. The sequencing batch sectional biofilm process sewage treatment system mainly comprises a regulating tank, a combined integrated treatment unit and a disinfection water outlet tank, wherein the regulating tank, the combined integrated treatment unit and the disinfection water outlet tank are sequentially connected by taking the flow direction of water as a sequence. Wherein 6 combined integrated treatment units are arranged in parallel, the water inlet end and the water outlet end of each unit are respectively connected with the regulating tank and the disinfection water outlet tank, and the functions of biochemistry, sedimentation, filtration and the like are integrated. The sequencing batch sectional biomembrane process sewage treatment system and the sewage treatment method can obviously improve the nitrogen and phosphorus removal purification capacity, have obvious precipitation and filtration effects, can effectively avoid the loss of activated sludge, reduce the operation and maintenance cost, have simple manual operation, can realize continuous water inlet and water outlet, and can not cause the problem of mass death of strains.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sequencing batch sectional type biomembrane sewage treatment system and a sewage treatment method.
Background
The existing sewage treatment system and the existing sewage treatment method have the following problems: 1) biological dephosphorization and denitrification are carried out in a mixing way, so that mutual interference is caused, and the mutual purification effects are influenced; 2) the biological strains and the dissolved oxygen in the tank body are distributed unevenly in space; 3) under the condition that the equipment does not run for a certain time, a large number of strains die, so that the system paralysis needs to be cultivated again; 4) sludge backflow and mixed liquid backflow are required, the impact load resistance is low, and the equipment operation power consumption is large; 5) continuous water inlet and outlet cannot be realized; 6) the system state changes greatly and irregularly, and the adaptability of the strain is seriously influenced.
Disclosure of Invention
In view of the above, one of the objectives of the present invention is to provide a sequential segmented biofilm method sewage treatment system, which can significantly improve the nitrogen and phosphorus removal purification capability, has an obvious precipitation and filtration effect, can effectively avoid the loss of activated sludge, reduce the operation and maintenance cost, is simple in manual operation, can realize continuous water inlet and water outlet, and does not cause the problem of mass bacterial death.
The invention solves the technical problems by the following technical means:
the invention relates to a sequencing batch sectional biofilm process sewage treatment system, which mainly comprises an adjusting tank, a combined integrated treatment unit and a disinfection water outlet tank, wherein the adjusting tank, the combined integrated treatment unit and the disinfection water outlet tank are sequentially connected by taking the flow direction of water as a sequence, 6 combined integrated treatment units are arranged in parallel, the water inlet end and the water outlet end of each unit are respectively connected with the adjusting tank and the disinfection water outlet tank, and the functions of biochemistry, sedimentation, filtration and the like are integrated.
Each combined integrated processing unit is connected with the regulating tank through a water supply pipe, and each water supply pipe is provided with a time control valve A. The combined integrated treatment unit consists of an anaerobic/aerobic tank and an anoxic/aerobic tank. A flow guide plate A is arranged in the anaerobic/aerobic tank and divides the anaerobic/aerobic tank into a first flow guide area and a first main reaction area; a guide plate B is arranged in the anoxic/aerobic tank and divides the anoxic/aerobic tank into a second guide area and a second main reaction area. A channel is reserved between the bottom of the guide plate A and the bottom of the anaerobic/aerobic tank, and a channel is reserved between the bottom of the guide plate B and the bottom of the anoxic/aerobic tank. The anaerobic/aerobic tank and the anoxic/aerobic tank are provided with sealing covers at the tops, the top of the guide plate A and the top of the guide plate B are in sealing connection with the sealing covers, a water-stop wall is arranged between the anaerobic/aerobic tank and the anoxic/aerobic tank, and a channel is reserved between the top of the water-stop wall and the sealing covers. The first guide area and the first main reaction area form a first independent space by a sealing cover, a guide plate A and the side wall of the anaerobic/aerobic tank, and the second guide area and the second main reaction area form a second independent space by a guide plate B, a sealing cover and the side wall of the anoxic/aerobic tank. The top of the first diversion area is communicated with the regulating tank through a pipeline, and the top of the second main reaction area is communicated with the disinfection water outlet tank through a pipeline; and biological fillers are arranged in the first main reaction area and the second main reaction area.
The integrated treatment device is characterized by further comprising a fan room, wherein 6 fans are arranged in the fan room, air outlets of the fans are communicated with the aeration system at the lower part of the corresponding combined integrated treatment unit through an air pipe, and each air pipe is provided with a time control valve B.
The sewage pump is arranged in the regulating reservoir, and the water outlet of the sewage pump is communicated with each water feeding pipe.
The sewage pump and the 6 time control valves are respectively connected with the sewage pump and the 6 time control valves through electric signals.
Further, still include the grid pond, be provided with guide plate C in the equalizing basin, guide plate C separates into preceding equalizing basin and back equalizing basin with the equalizing basin, the sewage pump sets up in the equalizing basin bottom of back, leave the passageway between guide plate C bottom and the equalizing basin bottom of the pool, the top in grid pond is passed through the pipeline and is linked together with preceding equalizing basin.
Further, the sludge drying device further comprises a sludge drying tank, wherein the sludge drying tank is communicated with the bottom of the anaerobic/aerobic tank and the bottom of the anoxic/aerobic tank through sludge pipes, and the bottom of the sludge drying tank is communicated with the grid tank through a sewage pipe.
Further, the device also comprises a dosing device, and the dosing device is connected with the disinfection water outlet pool.
Furthermore, a gravity rotary filter is arranged at the top of the second main reaction area, and the water in the second main reaction area is filtered and then transferred to a disinfection water outlet pool; the gravity rotary filter comprises a water converter and a strip-shaped drainage groove, wherein a plurality of water converters are arranged in parallel along the length direction of the drainage groove, the end parts of the drainage groove are communicated with a pipeline, each water converter comprises a driving motor, a rotating shaft, a baffle A and a baffle B which are symmetrically arranged on the rotating shaft, and a plurality of water hoppers arranged between the baffle A and the baffle B, the water hoppers are rotationally and symmetrically distributed by taking the rotating shaft as a center, each water hopper is a strip-shaped groove body, the lower half part of the surface of the baffle B is tightly attached to the outer side wall of the groove body, one end of each water hopper is closely connected with the baffle A, the other end of each water hopper is connected with the baffle B, and through holes communicated with the interior of the groove body are arranged at the positions where the water hoppers are connected with the baffle B; the driving motor is in transmission connection with the rotating shaft to drive the rotating shaft to rotate.
The invention also aims to provide a sewage treatment method adopting the sequencing batch sectional type biomembrane process sewage treatment system. The sewage treatment method can obviously improve the nitrogen and phosphorus removal purification capacity, has obvious precipitation and filtration effects, can effectively avoid the loss of activated sludge, reduces the operation and maintenance cost, has simple manual operability, can realize continuous water inlet and water outlet, and does not cause the problem of mass death of strains.
The invention solves the technical problems by the following technical means:
the sewage treatment method comprises the following steps:
s1) the sewage after being deslagged by the grating tank enters an adjusting tank to be uniform in water quality and water quantity, is lifted to an anaerobic/aerobic tank in the combined integrated treatment unit by a sewage pump, is uniformly mixed by aeration and stirring for 0.5 hour, then continuously releases phosphorus by dephosphorization bacteria in an anaerobic state for 4 hours, and continuously absorbs phosphorus by the dephosphorization bacteria in an aerobic state for 5 hours, so that the dephosphorization effect is achieved, and COD and BOD are effectively removed;
s2) standing for 0.5 hour, after the sludge-water separation is basically finished, the sewage enters an anoxic/aerobic tank (the water inlet time is 2 hours), aeration and stirring are carried out for 0.5 hour for uniform mixing, denitrifying bacteria carry out denitrification on the sewage in an anoxic state for 4 hours to remove a large amount of nitrate nitrogen, then, in an aerobic state for 5 hours, the nitrifying bacteria further carry out nitration reaction to remove ammonia nitrogen and further effectively remove COD and BOD;
s3), standing for 0.5 hour, separating mud and water, collecting and conveying the sewage to a disinfection water outlet pool by a gravity rotary filter, disinfecting and discharging after reaching the standard.
Further, the combined integrated treatment unit is provided with 6 units in parallel, the water inlet end and the water outlet end of each unit are respectively connected with the regulating reservoir and the disinfection water outlet pool, each unit is connected with the regulating reservoir through a water feeding pipe, each water feeding pipe is provided with a time control valve A, namely, 6 anaerobic/aerobic pools, 6 anoxic/aerobic pools, 6 water feeding pipes, 6 time control valves A, 6 air pipes and 6 time control valves B are counted, and the 6 anaerobic/aerobic pools, the 6 anoxic/aerobic pools, the 6 water feeding pipes, 6 time control valves A, 6 air pipes and the 6 time control valves B are divided into the following six groups and numbered:
the group of the anaerobic/aerobic anaerobic sewage treatment system comprises a No. 1 water supply pipe, a No. 1 time control valve A arranged on the No. 1 water supply pipe, a No. 1 anaerobic/aerobic pool connected with the No. 1 water supply pipe, a No. 1 anoxic/aerobic pool connected with the No. 1 anaerobic/aerobic pool, a No. 1 air pipe connected with the No. 1 anaerobic/aerobic pool and a No. 1 time control valve B arranged on the No. 1 air pipe;
the two groups comprise a No. 2 water supply pipe, a No. 2 time control valve A arranged on the No. 2 water supply pipe, a No. 2 anaerobic/aerobic pool connected with the No. 2 water supply pipe, a No. 2 anoxic/aerobic pool connected with the No. 2 anaerobic/aerobic pool, a No. 2 air pipe connected with the No. 2 anaerobic/aerobic pool and a No. 2 time control valve B arranged on the No. 2 air pipe;
the three groups comprise a 3# water supply pipe, a 3# time control valve A arranged on the 3# water supply pipe, a 3# anaerobic/aerobic tank connected with the 3# water supply pipe, a 3# anoxic/aerobic tank connected with the 3# anaerobic/aerobic tank, a 3# air pipe connected with the 3# anaerobic/aerobic tank and a 3# time control valve B arranged on the 3# air pipe;
the four groups of the anaerobic and aerobic anaerobic treatment devices comprise a 4# water supply pipe, a 4# time control valve A arranged on the 4# water supply pipe, a 4# anaerobic/aerobic pool connected with the 4# water supply pipe, a 4# anoxic/aerobic pool connected with the 4# anaerobic/aerobic pool, a 4# air pipe connected with the 4# anaerobic/aerobic pool and a 4# time control valve B arranged on the 4# air pipe;
the five groups comprise a No. 5 water supply pipe, a No. 5 time control valve A arranged on the No. 5 water supply pipe, a No. 5 anaerobic/aerobic pool connected with the No. 5 water supply pipe, a No. 5 anoxic/aerobic pool connected with the No. 5 anaerobic/aerobic pool, a No. 5 air pipe connected with the No. 5 anaerobic/aerobic pool and a No. 5 time control valve B arranged on the No. 5 air pipe;
the six groups of the anaerobic sewage treatment system comprise a No. 6 water supply pipe, a No. 6 time control valve A arranged on the No. 6 water supply pipe, a No. 6 anaerobic/aerobic pool connected with the No. 6 water supply pipe, a No. 6 anoxic/aerobic pool connected with the No. 6 anaerobic/aerobic pool, a No. 6 air pipe connected with the No. 6 anaerobic/aerobic pool and a No. 6 time control valve B arranged on the No. 6 air pipe;
the six groups can only be used for water inlet and outlet in a single group, and the time of each group is 2 hours at most.
More specifically, the facilities in the six groups described above operate according to the time periods in the following table:
the sequencing batch sectional type biomembrane process sewage treatment system and the sewage treatment method have the following beneficial effects:
1) the biological dephosphorization and denitrification are independent and do not interfere with each other, and the purification effect is improved.
2) The biological strains and the dissolved oxygen in the tank body are distributed uniformly in space.
3) The service life of active strains is prolonged under the condition that the equipment does not run for a certain time, and the condition that the strains die in large quantity to cause system paralysis and the strains need to be cultured again is avoided.
4) The system can stably remove BOD, TP and NH3-N, SS, and under normal conditions, the quality of the effluent 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).
5) The method does not need sludge backflow and mixed liquid backflow, and has higher shock resistance load and lower equipment operation power consumption.
6) The system can realize continuous water inlet and water outlet.
7) The sedimentation and filtration effect is obvious and the loss of activated sludge can be effectively avoided.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a plan view of a sequencing batch sectional biofilm process sewage treatment system of the present invention;
FIG. 2 is a schematic top view of a gravity rotary filter in a sequencing batch sectional biofilm process sewage treatment system according to the present invention;
FIG. 3 is a front view of the gravity spin filter of the present invention;
FIG. 4 is a side view of a gravity spin filter of the present invention; .
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example 1 sequencing batch sectional type biofilm process sewage treatment system
As shown in fig. 1: the sequencing batch sectional type biomembrane process sewage treatment system in the embodiment mainly comprises an adjusting tank 2, a combined integrated treatment unit 3 and a disinfection water outlet tank 4, wherein the adjusting tank 2, the combined integrated treatment unit 3 and the disinfection water outlet tank 4 are sequentially connected with one another by taking the flow direction of water as a sequence. Wherein 6 combined integrated treatment units 3 are arranged in parallel, the water inlet end and the water outlet end of each unit are respectively connected with the adjusting tank 2 and the disinfection water outlet tank 4, and the functions of biochemistry, sedimentation, filtration and the like are integrated.
Each combined integrated processing unit 3 is connected with the regulating tank 2 through a water supply pipe, and each water supply pipe is provided with a time control valve A5. The combined integrated treatment unit 3 consists of an anaerobic/aerobic tank 31 and an anoxic/aerobic tank 32. A flow guide plate A33 is arranged in the anaerobic/aerobic tank 31, and the flow guide plate A33 divides the anaerobic/aerobic tank 31 into a first flow guide area 35 and a first main reaction area 36; a flow guide plate B34 is arranged in the anoxic/aerobic tank 32, and the flow guide plate B divides the anoxic/aerobic tank 32 into a second flow guide area 37 and a second main reaction area 38. A channel is reserved between the bottom of the guide plate A33 and the bottom of the anaerobic/aerobic tank 31, and a channel is reserved between the bottom of the guide plate B and the bottom of the anoxic/aerobic tank 32. The top of the anaerobic/aerobic tank 31 and the top of the anoxic/aerobic tank 32 are provided with sealing covers 39, the top of the flow guide plate A33 and the top of the flow guide plate B are in sealing connection with the sealing covers, a water-stop wall 40 is arranged between the anaerobic/aerobic tank 31 and the anoxic/aerobic tank 32, and a channel is reserved between the top of the water-stop wall and the sealing covers. A first independent space is formed above the first diversion area and the first main reaction area by a sealing cover, a diversion plate A33 and the side wall of the anaerobic/aerobic tank 31, and a second independent space is formed above the second diversion area and the second main reaction area by a diversion plate B, a sealing cover and the side wall of the anoxic/aerobic tank 32. The top of the first diversion area is communicated with the regulating tank 2 through a pipeline, and the top of the second main reaction area is communicated with the disinfection water outlet tank 4 through a pipeline; the first main reaction area and the second main reaction area are provided with biological fillers 41. Specifically, still include grid pond 1, be provided with guide plate C in the equalizing basin 2, guide plate C separates into preceding equalizing basin 2 and back equalizing basin 2 with equalizing basin 2, the sewage pump sets up in 2 bottoms of back equalizing basin, leave the passageway between guide plate C bottom and the 2 bottoms of equalizing basin, the top in grid pond 1 is passed through the pipeline and is communicated each other with preceding equalizing basin 2.
The integrated treatment device also comprises a fan room, wherein 6 fans 7 are arranged in the fan room, the air outlets of the fans are communicated with the aeration systems at the lower parts of the corresponding combined integrated treatment units 3 through air pipes, and each air pipe is provided with a time control valve B6; the sewage pump is arranged in the adjusting tank 2, and the water outlet of the sewage pump is communicated with each water feeding pipe; the sewage pump control system further comprises a controller, and the controller is respectively in electric signal connection with the sewage pump, the 6 time control valves A5 and the 6 time control valves B6. The controller can respectively control the opening and closing time of each time control valve A5 and each time control valve B6, so that sequential batch sectional type sewage treatment is realized.
As a further improvement of the technical scheme, the system further comprises a sludge drying tank 8, wherein the sludge drying tank is communicated with the bottom of the anaerobic/aerobic tank 31 and the bottom of the anoxic/aerobic tank 32 through sludge pipes, and the bottom of the sludge drying tank is communicated with the grid tank 1 through a sewage pipe. And pumping away the sewage at the bottom of the sludge drying tank through a sewage pipe, so that the sludge at the upper part of the sludge drying tank is dried.
As a further improvement of the technical scheme, the disinfection device also comprises a dosing device 9 which is connected with the disinfection water outlet pool 4. The automatic dosing of the disinfection water outlet pool 4 can be realized by arranging the dosing device.
As a further improvement of the above technical solution, as shown in fig. 2-4, a gravity rotary filter is disposed at the top of the second main reaction area, and the water in the second main reaction area is filtered and then transferred to a disinfection effluent pool 4; the gravity rotary filter comprises a water converter 381 and a strip-shaped water drainage tank 382, wherein a plurality of water converters are arranged in parallel along the length direction of the water drainage tank, the end parts of the water drainage tank are communicated with a pipeline, each water converter comprises a driving motor 383, a rotating shaft 384, a baffle A385 and a baffle B386 which are symmetrically arranged on the rotating shaft, and a plurality of water buckets 387 arranged between the baffle A and the baffle B, the water buckets are rotationally and symmetrically distributed by taking the rotating shaft as a center, each water bucket is a strip-shaped tank body, the lower half part of the surface of the baffle B is tightly attached to the outer side wall of the tank body, one end of each water bucket is tightly connected with the baffle A, the other end of each water bucket is connected with the baffle B, and through holes 388 which are communicated with the inside of the tank body are arranged at the positions where the water buckets are connected with the baffle B; the driving motor is in transmission connection with the rotating shaft to drive the rotating shaft to rotate. During operation, driving motor drive pivot is rotated for the flood peak that is located the pivot below is full of water, and baffle A and water drainage tank lateral wall are sealed with the both ends of water skip this moment, and when the water skip rotated the top, baffle B upper portion face and water drainage tank lateral wall phase separation, and the through-hole is opened, and water in the water skip flows into water drainage tank naturally. The following problems can be solved by providing a gravity rotary filter: even if the water flowing into the second main reaction zone is not immediately discharged but is left for a certain period of time so that the water can sufficiently perform an anoxic and/or aerobic reaction, when the water level rises to a sufficient height, the water is discharged through the filtered water transfer system, thereby improving the sewage purification effect.
Example 2 Sewage treatment method
The sewage treatment method in the embodiment comprises the following steps:
s1) the sewage after being deslagged by the grating tank enters an adjusting tank to be uniform in water quality and water quantity, is lifted to an anaerobic/aerobic tank in the combined integrated treatment unit by a sewage pump, is uniformly mixed by aeration and stirring for 0.5 hour, then continuously releases phosphorus by dephosphorization bacteria in an anaerobic state for 4 hours, and continuously absorbs phosphorus by the dephosphorization bacteria in an aerobic state for 5 hours, so that the dephosphorization effect is achieved, and COD and BOD are effectively removed;
s2) standing for 0.5 hour, after the sludge-water separation is basically finished, the sewage enters an anoxic/aerobic tank (the water inlet time is 2 hours), aeration and stirring are carried out for 0.5 hour for uniform mixing, denitrifying bacteria carry out denitrification on the sewage in an anoxic state for 4 hours to remove a large amount of nitrate nitrogen, then, in an aerobic state for 5 hours, the nitrifying bacteria further carry out nitration reaction to remove ammonia nitrogen and further effectively remove COD and BOD;
s3), standing for 0.5 hour, separating mud and water, collecting and conveying the sewage to a disinfection water outlet pool by a gravity rotary filter, disinfecting and discharging after reaching the standard.
Further, the combined integrated treatment unit is provided with 6 units in parallel, the water inlet end and the water outlet end of each unit are respectively connected with the regulating reservoir and the disinfection water outlet pool, each unit is connected with the regulating reservoir through a water feeding pipe, each water feeding pipe is provided with a time control valve A, namely, 6 anaerobic/aerobic pools, 6 anoxic/aerobic pools, 6 water feeding pipes, 6 time control valves A, 6 air pipes and 6 time control valves B are counted, and the 6 anaerobic/aerobic pools, the 6 anoxic/aerobic pools, the 6 water feeding pipes, 6 time control valves A, 6 air pipes and the 6 time control valves B are divided into the following six groups and numbered:
the group of the anaerobic/aerobic anaerobic sewage treatment system comprises a No. 1 water supply pipe, a No. 1 time control valve A arranged on the No. 1 water supply pipe, a No. 1 anaerobic/aerobic pool connected with the No. 1 water supply pipe, a No. 1 anoxic/aerobic pool connected with the No. 1 anaerobic/aerobic pool, a No. 1 air pipe connected with the No. 1 anaerobic/aerobic pool and a No. 1 time control valve B arranged on the No. 1 air pipe;
the two groups comprise a No. 2 water supply pipe, a No. 2 time control valve A arranged on the No. 2 water supply pipe, a No. 2 anaerobic/aerobic pool connected with the No. 2 water supply pipe, a No. 2 anoxic/aerobic pool connected with the No. 2 anaerobic/aerobic pool, a No. 2 air pipe connected with the No. 2 anaerobic/aerobic pool and a No. 2 time control valve B arranged on the No. 2 air pipe;
the three groups comprise a 3# water supply pipe, a 3# time control valve A arranged on the 3# water supply pipe, a 3# anaerobic/aerobic tank connected with the 3# water supply pipe, a 3# anoxic/aerobic tank connected with the 3# anaerobic/aerobic tank, a 3# air pipe connected with the 3# anaerobic/aerobic tank and a 3# time control valve B arranged on the 3# air pipe;
the four groups of the anaerobic and aerobic anaerobic treatment devices comprise a 4# water supply pipe, a 4# time control valve A arranged on the 4# water supply pipe, a 4# anaerobic/aerobic pool connected with the 4# water supply pipe, a 4# anoxic/aerobic pool connected with the 4# anaerobic/aerobic pool, a 4# air pipe connected with the 4# anaerobic/aerobic pool and a 4# time control valve B arranged on the 4# air pipe;
the five groups comprise a No. 5 water supply pipe, a No. 5 time control valve A arranged on the No. 5 water supply pipe, a No. 5 anaerobic/aerobic pool connected with the No. 5 water supply pipe, a No. 5 anoxic/aerobic pool connected with the No. 5 anaerobic/aerobic pool, a No. 5 air pipe connected with the No. 5 anaerobic/aerobic pool and a No. 5 time control valve B arranged on the No. 5 air pipe;
the six groups of the anaerobic sewage treatment system comprise a No. 6 water supply pipe, a No. 6 time control valve A arranged on the No. 6 water supply pipe, a No. 6 anaerobic/aerobic pool connected with the No. 6 water supply pipe, a No. 6 anoxic/aerobic pool connected with the No. 6 anaerobic/aerobic pool, a No. 6 air pipe connected with the No. 6 anaerobic/aerobic pool and a No. 6 time control valve B arranged on the No. 6 air pipe;
the six groups can only be used for water inlet and outlet in a single group, and the time of each group is 2 hours at most.
More specifically, the facilities in the six groups described above operate according to the time periods in the following table:
the aeration rate in each aeration time period, the aeration rate of the anaerobic/aerobic tank is calculated according to two groups of tanks, and the aeration rate of the anoxic/aerobic tank is calculated according to three groups of tanks.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (6)
1. A sequencing batch sectional type biomembrane process sewage treatment system mainly comprises a regulating reservoir, combined integrated treatment units and a disinfection water outlet pool, wherein the regulating reservoir, the combined integrated treatment units and the disinfection water outlet pool are sequentially connected by taking the flow direction of water as the sequence, the combined integrated treatment units are arranged in parallel for 6, the water inlet end and the water outlet end of each combined integrated treatment unit are respectively connected with the regulating reservoir and the disinfection water outlet pool, each combined integrated treatment unit is connected with the regulating reservoir through a water feeding pipe, each water feeding pipe is provided with a time control valve A, each combined integrated treatment unit comprises an anaerobic/aerobic pool and an anoxic/aerobic pool, a guide plate A is arranged in the anaerobic/aerobic pool, the guide plate A divides the anaerobic/aerobic pool into a first guide area and a first main reaction area, the anaerobic/aerobic pool is internally provided with a guide plate B, the guide plate B separates the anaerobic/aerobic pool into a second guide area and a second main reaction area, a channel is reserved between the bottom of the guide plate A and the bottom of the anaerobic/aerobic pool, a channel is reserved between the bottom of the guide plate B and the bottom of the anaerobic/aerobic pool, sealing covers are arranged at the tops of the anaerobic/aerobic pool and the anaerobic/aerobic pool, the tops of the guide plate A and the guide plate B are in sealing connection with the sealing covers, a water-stop wall is arranged between the anaerobic/aerobic pool and the anaerobic/aerobic pool, a channel is reserved between the top of the water-stop wall and the sealing covers, a first independent space is formed above the first guide area by the sealing covers, the guide plate A and the side wall of the anaerobic/aerobic pool, and the upper parts of the first main reaction area and the second guide area are formed by the guide plate A, The guide plate B and the sealing cover form a first independent space, a second independent space is formed above the second main reaction area by the guide plate B, the sealing cover and the side wall of the anoxic/aerobic pool, the top of the first guide area is communicated with the regulating pool through a pipeline, and the top of the second main reaction area is communicated with the disinfection water outlet pool through a pipeline; biological fillers are arranged in the first main reaction area and the second main reaction area;
the integrated treatment device is characterized by also comprising 6 fans, wherein the air outlets of the fans are communicated with the aeration systems at the lower parts of the corresponding combined integrated treatment units through an air pipe, and each air pipe is provided with a time control valve B;
the sewage pump is arranged in the regulating reservoir, and the water outlet of the sewage pump is communicated with each water feeding pipe; the sewage treatment device is characterized by further comprising a grid pool, wherein a guide plate C is arranged in the adjusting pool and divides the adjusting pool into a front adjusting pool and a rear adjusting pool, the sewage pump is arranged at the bottom of the rear adjusting pool, a channel is reserved between the bottom of the guide plate C and the bottom of the adjusting pool, and the top of the grid pool is communicated with the front adjusting pool through a pipeline;
the sewage pump is electrically connected with the sewage pump, the 6 time control valves A and the 6 time control valves B respectively;
the top of the second main reaction area is provided with a gravity rotary filter, and the second main reaction area filters water in the second main reaction area through the gravity rotary filter and a pipeline and then transfers the water to a disinfection water outlet pool; the gravity rotary filter comprises a water converter and a strip-shaped drainage groove, wherein a plurality of water converters are arranged in parallel along the length direction of the drainage groove, the end parts of the drainage groove are communicated with a pipeline, each water converter comprises a driving motor, a rotating shaft, a baffle A and a baffle B which are symmetrically arranged on the rotating shaft, and a plurality of water hoppers arranged between the baffle A and the baffle B, the water hoppers are rotationally and symmetrically distributed by taking the rotating shaft as a center, each water hopper is a strip-shaped groove body, the lower half part of the surface of the baffle B is tightly attached to the outer side wall of the groove body, one end of each water hopper is tightly connected with the baffle A, the other end of each water hopper is connected with the baffle B, and through holes communicated with the interior of the groove body are arranged at the positions where the water hoppers are connected with the baffle B; the driving motor is in transmission connection with the rotating shaft to drive the rotating shaft to rotate.
2. The sequencing batch staged biofilm process wastewater treatment system of claim 1, wherein: the anaerobic/aerobic sludge drying device is characterized by further comprising a sludge drying tank, wherein the sludge drying tank is communicated with the bottom of the anaerobic/aerobic tank and the bottom of the anoxic/aerobic tank through sludge pipes, and the bottom of the sludge drying tank is communicated with the grid tank through a sewage pipe.
3. The sequencing batch staged biofilm process wastewater treatment system of claim 2, wherein: the device also comprises a dosing device which is connected with the disinfection water outlet pool.
4. A sewage treatment method of a sequencing batch sectional biofilm process sewage treatment system as claimed in any one of claims 1 to 3, comprising the steps of:
s1) the sewage after being deslagged by the grating tank enters an adjusting tank to be uniform in water quality and water quantity, is lifted to an anaerobic/aerobic tank in the combined integrated treatment unit by a sewage pump, is uniformly mixed by aeration and stirring for 0.5 hour, then continuously releases phosphorus by dephosphorization bacteria in an anaerobic state for 4 hours, and continuously absorbs phosphorus by the dephosphorization bacteria in an aerobic state for 5 hours, so that the dephosphorization effect is achieved, and COD and BOD are effectively removed;
s2) standing for 0.5 hour, after the sludge-water separation is basically finished, the sewage enters an anoxic/aerobic tank (the water inlet time is 2 hours), aeration and stirring are carried out for 0.5 hour for uniform mixing, denitrifying bacteria carry out denitrification on the sewage in an anoxic state for 4 hours to remove a large amount of nitrate nitrogen, then, in an aerobic state for 5 hours, the nitrifying bacteria further carry out nitration reaction to remove ammonia nitrogen and further effectively remove COD and BOD;
s3), standing for 0.5 hour, separating mud and water, collecting and conveying the sewage to a disinfection water outlet pool by a gravity rotary filter, disinfecting and discharging after reaching the standard.
5. The wastewater treatment method according to claim 4, characterized in that:
the integrated processing unit of combination formula is provided with 6 side by side, the end of intaking and the play water end of every unit link to each other with equalizing basin and disinfection play water pool respectively, respectively link to each other through a flow pipe between every unit and the equalizing basin, respectively be provided with a time control valve A on every flow pipe, 6 anaerobism/good oxygen ponds have in total promptly, 6 oxygen deficiency/good oxygen ponds, 6 flow pipes, 6 time control valve A, 6 air pipes, 6 time control valve B, with above-mentioned 6 anaerobism/good oxygen ponds, 6 oxygen deficiency/good oxygen ponds, 6 flow pipes, 6 time control valve A, 6 air pipes, 6 time control valve B divide into following six groups and serial numbers:
the group of the anaerobic/aerobic anaerobic sewage treatment system comprises a No. 1 water supply pipe, a No. 1 time control valve A arranged on the No. 1 water supply pipe, a No. 1 anaerobic/aerobic pool connected with the No. 1 water supply pipe, a No. 1 anoxic/aerobic pool connected with the No. 1 anaerobic/aerobic pool, a No. 1 air pipe connected with the No. 1 anaerobic/aerobic pool and a No. 1 time control valve B arranged on the No. 1 air pipe;
the two groups comprise a No. 2 water supply pipe, a No. 2 time control valve A arranged on the No. 2 water supply pipe, a No. 2 anaerobic/aerobic pool connected with the No. 2 water supply pipe, a No. 2 anoxic/aerobic pool connected with the No. 2 anaerobic/aerobic pool, a No. 2 air pipe connected with the No. 2 anaerobic/aerobic pool and a No. 2 time control valve B arranged on the No. 2 air pipe;
the three groups comprise a 3# water supply pipe, a 3# time control valve A arranged on the 3# water supply pipe, a 3# anaerobic/aerobic tank connected with the 3# water supply pipe, a 3# anoxic/aerobic tank connected with the 3# anaerobic/aerobic tank, a 3# air pipe connected with the 3# anaerobic/aerobic tank and a 3# time control valve B arranged on the 3# air pipe;
the four groups of the anaerobic and aerobic anaerobic treatment devices comprise a 4# water supply pipe, a 4# time control valve A arranged on the 4# water supply pipe, a 4# anaerobic/aerobic pool connected with the 4# water supply pipe, a 4# anoxic/aerobic pool connected with the 4# anaerobic/aerobic pool, a 4# air pipe connected with the 4# anaerobic/aerobic pool and a 4# time control valve B arranged on the 4# air pipe;
the five groups comprise a No. 5 water supply pipe, a No. 5 time control valve A arranged on the No. 5 water supply pipe, a No. 5 anaerobic/aerobic pool connected with the No. 5 water supply pipe, a No. 5 anoxic/aerobic pool connected with the No. 5 anaerobic/aerobic pool, a No. 5 air pipe connected with the No. 5 anaerobic/aerobic pool and a No. 5 time control valve B arranged on the No. 5 air pipe;
the six groups of the anaerobic sewage treatment system comprise a No. 6 water supply pipe, a No. 6 time control valve A arranged on the No. 6 water supply pipe, a No. 6 anaerobic/aerobic pool connected with the No. 6 water supply pipe, a No. 6 anoxic/aerobic pool connected with the No. 6 anaerobic/aerobic pool, a No. 6 air pipe connected with the No. 6 anaerobic/aerobic pool and a No. 6 time control valve B arranged on the No. 6 air pipe;
the six groups can only be used for water inlet and outlet in a single group, and the time of each group is 2 hours at most.
6. The wastewater treatment method according to claim 5, characterized in that:
the facilities in the six groups operate according to the time periods in the following table:
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