CN217780976U - Sewage treatment system suitable for town sewage plant and high discharge standard - Google Patents
Sewage treatment system suitable for town sewage plant and high discharge standard Download PDFInfo
- Publication number
- CN217780976U CN217780976U CN202221628206.5U CN202221628206U CN217780976U CN 217780976 U CN217780976 U CN 217780976U CN 202221628206 U CN202221628206 U CN 202221628206U CN 217780976 U CN217780976 U CN 217780976U
- Authority
- CN
- China
- Prior art keywords
- filter
- tank
- sludge
- aeration
- sewage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The utility model relates to a sewage treatment system suitable for cities and towns sewage factory, high emission standard. Is applicable to the field of sewage plant treatment engineering. The utility model adopts the technical proposal that: the utility model provides a sewage treatment system suitable for cities and towns sewage plant, high discharge standard which characterized in that: the system comprises a coarse grating and a lift pump room, a fine grating and an aeration grit chamber, an AAO biochemical tank, a radial flow sedimentation tank, a combined biological filter, a high-efficiency sedimentation tank, a V-shaped filter and a Pasteur metering tank which are arranged in sequence along the flowing direction of sewage; the combined biofilter is provided with a pool body, the left side and the right side in the pool body are separated by partition walls to form a left side area and a right side area, the front and the back in the left side area are separated by partition walls to form a denitrification filter and an aeration biofilter, and the front and the back in the right side area are separated by partition walls to form a back-flushing clean water pool and a back-flushing wastewater pool.
Description
Technical Field
The utility model relates to a sewage treatment system suitable for cities and towns sewage factory, high emission standard. Is applicable to the field of sewage plant treatment engineering.
Background
The treatment of sewage is more important because of the rapid increase in population, which results in the production of large volumes of sewage, and the limited availability of water resources to humans on earth. The purpose of sewage treatment is to clean the used water to the same nature as the natural water source, while properly disposing of the solids filtered out of the sewage, which requires the use of more advanced engineering techniques.
At present, the discharge standard of the existing urban sewage plant is mostly the first-class A discharge standard, and the water quality of the first-class A discharge is limited in use and low in utilization rate.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: aiming at the existing problems, the sewage treatment system which is high in efficiency, low in cost and suitable for urban sewage plants and has high discharge standard is provided.
The utility model adopts the technical proposal that: the utility model provides a sewage treatment system suitable for cities and towns sewage plant, high discharge standard which characterized in that: the system comprises a coarse grating and a lift pump room, a fine grating and an aeration grit chamber, an AAO biochemical tank, a radial flow sedimentation tank, a combined biological filter, a high-efficiency sedimentation tank, a V-shaped filter and a Pasteur metering tank which are arranged in sequence along the flowing direction of sewage;
the combined biological filter is provided with a filter body, the left side and the right side of the filter body are separated by partition walls to form a left side area and a right side area, the front and the back of the left side area are separated by partition walls to form a denitrification filter and an aeration biological filter, and the front and the back of the right side area are separated by partition walls to form a backwashing clear water tank and a backwashing wastewater tank;
the backwashing clear water tank is communicated with water outlets of the biological aerated filter and the V-shaped filter, a backwashing pump is arranged in the backwashing clear water tank, and the backwashing pump is connected with backwashing pipes positioned at the bottoms of the biological aerated filter and the V-shaped filter; the backwashing wastewater tank is communicated with the backwashing wastewater outlets of the biological aerated filter and the V-shaped filter.
The sludge treatment system comprises a sludge reflux pump room, a sludge storage pool and a sludge concentration and dehydration machine room, wherein the outlet of the sludge reflux pump room is sequentially connected with the sludge storage pool and the sludge concentration and dehydration machine room;
the sludge precipitated at the bottom of the radial flow sedimentation tank is conveyed into the sludge return pump room through a sludge pipe; and conveying the precipitated sludge in the high-efficiency sedimentation tank to the sludge storage tank.
Still have aeration systems, aeration systems includes aeration blower and aeration pipe, wherein the aeration pipe set up respectively in AAO biochemical pond, combination biological filter and V type filter pond in.
The aeration fan and the back washing pump are both in circuit connection with the controller, and the controller is used for firstly controlling the aeration fan to work independently when the biological aerated filter and the V-shaped filter are back washed, controlling the aeration fan and the back washing pump to work together, and finally controlling the back washing pump to work independently.
And the system is also provided with a medicament adding system, and the medicament adding system is used for adding a PAC coagulant into the high-efficiency sedimentation tank and adding a carbon source medicament into the AAO biochemical tank and the combined biological filter tank.
The carbon source medicament adopts sodium acetate and is added by adopting a diaphragm pump metering pump.
The denitrification filter adopts a ceramsite filter material, the thickness of the filter material is 2-3 m, the supporting layer adopts graded pebbles, the particle size is 8-32 mm, and the thickness is 300-500 mm.
The biological aerated filter adopts a ceramsite filter material, the thickness of the filter material is 2-3 m, the supporting layer adopts graded pebbles, the particle size is 8-32 mm, the thickness is 300-500 mm, and an aeration pipe is arranged in the filter material layer and used for supplementing oxygen to the filter body.
The beneficial effects of the utility model are that: 1) The sewage treatment can reach the standard of surface water IV, the tail water can be used for ecological water supplement of a river channel, the healthy development of the watershed water environment is facilitated, and meanwhile, the tail water can also be used for road watering, greening watering, fire-fighting water and the like, so that economic benefits are generated; 2) The sewage treatment process is optimized, the treatment technical route is advanced, the operation cost is lower, and the effluent quality of the sewage plant is reliable and stable.
3) The denitrification filter, the biological aerated filter and the like are integrated into a combined biological filter, and the combined biological filter has the advantages that:
in general, conventional wastewater treatment processes: water inlet, coarse grid/water collecting well, fine grid and aeration grit chamber, biochemical reaction tank, high efficiency clarification tank, filter cloth filter tank, disinfection and water outlet. The water outlet standard meets the first-class A standard. At present, in order to improve the sewage effluent standard (reaching the quasi-IV class) and optimize the treatment process, the whole treatment route is optimized, and a denitrification filter tank and an aeration biological filter tank treatment process are introduced, which is equivalent to strengthening the denitrification capability of the existing biochemical reaction tank section, and simultaneously, the scale size of the tank needs to be large, the investment cost is high, and the operation and maintenance are inconvenient if an independent denitrification filter tank is adopted for treatment. If the denitrification filter tank and the biological aerated filter tank are combined with each other, sewage firstly passes through the biological aerated filter tank and then is treated by the denitrification filter tank, so that the operation efficiency can be improved, and meanwhile, the combined biological filter tank has lower construction cost and operation cost compared with a single denitrification filter tank and has lower construction cost and operation cost compared with a single biological aerated filter tankDenitrogenation and organic matter removal COD cr The treatment effect is better, which is equivalent to centralizing the advantages of the aeration biological filter and the denitrification filter, achieving better treatment effect and reducing the construction cost.
Meanwhile, compared with a single denitrification filter and a single aeration biological filter, the combined biological filter has higher hydraulic load impact resistance and can remove total nitrogen and ammonia nitrogen under higher load. Compared with other modes, the denitrification effect is better by adding methanol as a carbon source before the combined biofilter, test data show that the denitrification efficiency of the carbon source which is not added is 45%, the denitrification efficiency of the source sewage which is used as the carbon source is about 70%, and the denitrification efficiency of the carbon source which is added by methanol can reach 92%.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
FIG. 2 is a plan view of the combined biofilter according to the embodiment.
Fig. 3 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2.
Fig. 4 is a sectional view taken along line B-B of fig. 2.
1. A coarse grid and a lift pump house; 2. fine grids and an aeration grit chamber; 3. an AAO biochemical pond; 4. a radial flow sedimentation tank; 5. a combined biofilter; 5-1, a denitrification filter; 5-2, aerating a biological filter; 5-3, backwashing the clean water tank; 5-4, backwashing the wastewater tank; 6. a high-efficiency sedimentation tank; 7. a V-shaped filter chamber; 7-1 of a disinfectant; 8. A pasteur metering tank; 9-1, a sludge reflux pump room; 9-2, a sludge storage pool; 9-3, a sludge concentration pump room; 10-1, an aeration fan; 10-2, aeration pipe(ii) a 11. Back flushing pipe。
Detailed Description
The implementation adopts a sewage treatment system suitable for urban sewage plants and high discharge standards, which comprises a coarse grating, a lifting pump room, a fine grating, an aeration grit chamber, an AAO biochemical tank, a radial sedimentation tank, a combined biological filter tank, a high-efficiency sedimentation tank, a V-shaped filter tank and a disinfection tank which are sequentially arranged along the flow direction of sewage; the effluent of the coarse grating and the lift pump room is sequentially connected with the fine grating and the aeration grit chamber, the AAO biochemical tank, the radial flow sedimentation tank, the combined biological filter, the high-efficiency sedimentation tank, the V-shaped filter and the pasteurization tank.
The combined biological filter is of a semi-underground reinforced concrete structure in the whole, the left and right sides in the pool body of the combined biological filter are separated by partition walls according to the area ratio of 3:1 to form a left side area and a right side area, wherein the front and the back in the left side area are separated by partition walls to form a denitrification filter and an aeration biological filter with approximate areas, and the front and the back in the right side area are separated by partition walls according to the area ratio of 3:1 to form a backwashing clear water pool and a backwashing wastewater pool.
The embodiment is also provided with a sludge treatment system, the sludge treatment system comprises a sludge reflux pump room, a sludge storage pool and a sludge concentration dehydration machine room, and the sludge reflux pump room is sequentially connected with the sludge storage pool and the sludge concentration dehydration machine room; sludge precipitated at the bottom of a radial flow sedimentation tank in the sewage treatment system is conveyed to a sludge reflux pump room through a sludge pipe, and the precipitated sludge in the high-efficiency sedimentation tank is conveyed to a sludge storage tank.
The aeration system comprises an aeration fan and an aeration pipe, wherein the aeration pipe is respectively arranged in the aeration biological filter tank in the AAO biochemical filter tank, the V-shaped filter tank and the combined biological filter tank.
The embodiment is also provided with a medicament adding system, which comprises a coagulant adding device for adding a PAC coagulant, a carbon source adding device for adding a carbon source medicament and a disinfectant adding device for adding a disinfectant, wherein the PAC coagulant is added into the high-efficiency sedimentation tank, and the carbon source adding device is respectively added into the AAO biochemical tank and the combined biological filter tank.
In the carbon source adding device, carbon source adding points are respectively arranged at the water inlet end of an anoxic zone of the AAO biochemical tank and the water inlet end of the denitrification filter tank, and a carbon source medicament adopts sodium acetate and is added by adopting a diaphragm pump metering pump.
The backwashing clear water tank in the embodiment is communicated with the water outlets of the biological aerated filter and the V-shaped filter and is used for storing the effluent water of the biological aerated filter and the V-shaped filter, a plurality of backwashing pumps are arranged in the backwashing clear water tank and are respectively connected to the bottoms of the biological aerated filter and the V-shaped filter so as to clean the tank body.
The backwashing wastewater tank in the embodiment is communicated with the backwashing wastewater outlets of the biological aerated filter and the V-shaped filter and is used for collecting wastewater washed by the biological aerated filter and the V-shaped filter, and a stirrer is arranged at the bottom of the backwashing wastewater tank.
The aeration fan in the aeration system and the back flush pump in the back flush clean water tank in the embodiment are both in circuit connection with the controller, when the biological aerated filter and the V-shaped filter are flushed, the controller jointly uses the aeration fan and the back flush pump, the aeration fan is independently controlled to carry out air flushing, the flushing strength is 55m 3 /m 2 H, the time is 4min, then the aeration fan and the back washing pump are controlled to carry out gas and water combined back washing, and the water washing intensity is 21.6m 3 /m 2 H, the washing intensity is 4min, and finally the backwashing pump is independently controlled to carry out water backwashing with the backwashing intensity of 25m 3 /m 2 H, wash time 5min.
The denitrification load of the denitrification filter in the embodiment is 0.50kgNO - 3 -N/(m 3 D), the hydraulic retention time is 30min, the filtering speed is 5.0m/h, the filter material is ceramsite particles, the thickness of the filter material is 2.5m, and the supporting layer adopts graded pebbles, the particle size is 16mm, and the thickness is 400mm.
In the embodiment, the single lattice size of the biological aerated filter is 8m7m7m7m, a ceramsite filter material with the thickness of 2.5m is adopted, a supporting layer is graded pebbles with the particle size of 12mm and the thickness of 400mm, an aeration pipe is arranged in the filter material layer and is used for supplementing oxygen to the filter body, and the air volume is 10m 3 /min。
The V-shaped filter tank in the embodiment is of a semi-underground concrete structure, the filtering speed is 6m/h, the forced filtering speed is 8m/h, a quartz sand filter material is adopted, the thickness of the filter material is 1.2m, coarse sand is adopted as a supporting layer, the effective grain size is 2.5mm, and the thickness is 60mm.
The concentrations of the influent and effluent of the wastewater in this example are shown in the following table
| Item | Mean value of influent water concentration | Mean value of effluent concentration |
| COD | 125.6 | 8.9 |
| BOD | 55.6 | 3.5 |
| SS | 80.0 | 3.3 |
| Ammonia nitrogen | 25.6 | 0.41 |
| Total nitrogen | 35.6 | 8.5 |
| Total phosphorus | 2.98 | 0.12 |
The above-mentioned embodiment is only used for explaining the utility model concept, and not to the limit of the utility model protection, and all utilize this concept to be right the utility model discloses carry out insubstantial change, all shall fall into the scope of protection of the utility model.
Claims (8)
1. The utility model provides a sewage treatment system suitable for cities and towns sewage plant, high discharge standard which characterized in that: the system comprises a coarse grating and a lift pump room, a fine grating and an aeration grit chamber, an AAO biochemical tank, a radial flow sedimentation tank, a combined biological filter, a high-efficiency sedimentation tank, a V-shaped filter and a Pasteur metering tank which are arranged in sequence along the flowing direction of sewage;
the combined biological filter is provided with a filter body, the left side and the right side of the filter body are separated by partition walls to form a left side area and a right side area, the front and the back of the left side area are separated by partition walls to form a denitrification filter and an aeration biological filter, and the front and the back of the right side area are separated by partition walls to form a backwashing clear water tank and a backwashing wastewater tank;
the backwashing clean water tank is communicated with the water outlets of the biological aerated filter and the V-shaped filter, a backwashing pump is arranged in the backwashing clean water tank, and the backwashing pump is connected with backwashing pipes positioned at the bottoms of the biological aerated filter and the V-shaped filter; and the backwashing wastewater tank is communicated with the backwashing wastewater outlets of the biological aerated filter and the V-shaped filter.
2. The sewage treatment system suitable for urban sewage plants with high emission standard according to claim 1, further comprising a sludge treatment system, wherein the sludge treatment system comprises a sludge return pump room, a sludge storage tank and a sludge thickening and dewatering machine room, wherein the outlet of the sludge return pump room is sequentially connected with the sludge storage tank and the sludge thickening and dewatering machine room;
the sludge precipitated at the bottom of the radial flow sedimentation tank is conveyed into the sludge reflux pump room through a sludge pipe; and conveying the precipitated sludge in the high-efficiency sedimentation tank to the sludge storage tank.
3. The system of claim 1, further comprising an aeration system, wherein the aeration system comprises an aeration blower and an aeration pipe, wherein the aeration pipe is disposed in the AAO biochemical tank, the combined biological filter tank and the V-shaped filter tank, respectively.
4. The sewage treatment system suitable for urban sewage plants and high emission standards according to claim 3, wherein: the aeration fan and the back washing pump are both in circuit connection with the controller, and the controller is used for firstly controlling the aeration fan to work independently when the biological aerated filter and the V-shaped filter are back washed, controlling the aeration fan and the back washing pump to work together, and finally controlling the back washing pump to work independently.
5. The sewage treatment system suitable for urban sewage plants and high discharge standards according to claim 1, further comprising a chemical dosing system for dosing PAC coagulant into the high-efficiency sedimentation tank and carbon source chemicals into the AAO biochemical tank and the combined biological filter tank.
6. The sewage treatment system suitable for urban sewage plants and high emission standards according to claim 5, wherein: the carbon source medicament adopts sodium acetate and is added by adopting a diaphragm pump metering pump.
7. The sewage treatment system suitable for urban sewage plants and high emission standards according to claim 1, wherein: the denitrification filter adopts a ceramsite filter material, the thickness of the filter material is 2-3 m, the supporting layer adopts graded pebbles, the particle size is 8-32 mm, and the thickness is 300-500 mm.
8. The sewage treatment system suitable for urban sewage plants and high emission standards according to claim 1, wherein: the biological aerated filter adopts a ceramsite filter material, the thickness of the filter material is 2-3 m, the supporting layer adopts graded pebbles, the particle size is 8-32 mm, the thickness is 300-500 mm, and an aeration pipe is arranged in the filter material layer and used for supplementing oxygen to the filter body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221628206.5U CN217780976U (en) | 2022-06-28 | 2022-06-28 | Sewage treatment system suitable for town sewage plant and high discharge standard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221628206.5U CN217780976U (en) | 2022-06-28 | 2022-06-28 | Sewage treatment system suitable for town sewage plant and high discharge standard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217780976U true CN217780976U (en) | 2022-11-11 |
Family
ID=83936348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221628206.5U Active CN217780976U (en) | 2022-06-28 | 2022-06-28 | Sewage treatment system suitable for town sewage plant and high discharge standard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217780976U (en) |
-
2022
- 2022-06-28 CN CN202221628206.5U patent/CN217780976U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102775025B (en) | Municipal life wastewater treatment system with high efficiency and low energy consumption | |
| CN102092900B (en) | Method for treating micro polluted water by using biological nitrogen removal and physicochemical enhanced phosphorus removal combined process | |
| CN110759591B (en) | Rural domestic sewage treatment process and system for efficiently removing nitrogen and phosphorus | |
| CN201850201U (en) | Assembly system for sewage advanced treatment | |
| CN106698816A (en) | Enhanced denitrification wastewater treatment method and device for circulating water culture system | |
| CN208791419U (en) | Integrated buried type rural domestic sewage treating device | |
| CN111204927A (en) | Ecological public toilet sewage treatment circulating system and sewage treatment and recycling method | |
| CN108178438A (en) | A kind of rural domestic sewage treatment system and purification method | |
| CN212375119U (en) | Sewage treatment system in multi-functional district | |
| CN105236687A (en) | Sewage treatment device and method for self-cleaning type micro-aeration vertical baffled wetland | |
| CN211339184U (en) | Domestic sewage integrated treatment equipment based on steel slag ceramsite filler biological filter | |
| CN1982237A (en) | Quick-decomposing biological sewage treatment and treating system | |
| CN217780976U (en) | Sewage treatment system suitable for town sewage plant and high discharge standard | |
| CN102745869A (en) | Composite constructed wetland system for sewage treatment and ecological restoration | |
| CN206447646U (en) | Sewage-treatment plant | |
| CN104030442A (en) | Integral domestic sewage treatment equipment | |
| CN211644786U (en) | Biochemical wetland ecological purification system for new rural domestic sewage | |
| CN205313183U (en) | Ecological processing system of vertical current sewage | |
| CN114656104A (en) | Energy-saving self-circulation A3O-MBBR sewage treatment device and method thereof | |
| CN211035602U (en) | Black smelly water intensive treatment system | |
| CN209872686U (en) | Ecological sewage treatment system | |
| CN203922850U (en) | Integral life sewage handler | |
| CN101759279B (en) | Biological filtration device | |
| CN218025780U (en) | Solar-driven intermittent aeration combined artificial wetland for expressway service area | |
| CN110590055A (en) | Rural sewage treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |