CN212102498U - Wastewater treatment system for upgrading wastewater discharged by sewage treatment plant to III-class water quality on earth surface - Google Patents
Wastewater treatment system for upgrading wastewater discharged by sewage treatment plant to III-class water quality on earth surface Download PDFInfo
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- CN212102498U CN212102498U CN202020660605.4U CN202020660605U CN212102498U CN 212102498 U CN212102498 U CN 212102498U CN 202020660605 U CN202020660605 U CN 202020660605U CN 212102498 U CN212102498 U CN 212102498U
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Abstract
The utility model relates to a wastewater treatment system for upgrading wastewater discharged by a sewage treatment plant to surface III-class water quality, which comprises a water collecting tank, a filter tank device, a flocculation sedimentation tank, a fiber rotary disc filter tank and a clean water tank which are sequentially connected through pipelines, wherein the input end of the water collecting tank is connected with a water source of wastewater to be upgraded through a pipeline, a first lift pump is arranged in the water collecting tank, and the output end of the first lift pump is connected with the input end of the filter tank device; the filter device consists of a nitrifying biological filter, a denitrifying biological filter and a digesting filter which are connected in sequence, wherein back washing water inlets are arranged at the bottom of the nitrifying biological filter, the bottom of the denitrifying biological filter and the bottom of the digesting filter, and back washing water outlets are arranged at the top of the nitrifying biological filter, the top of the denitrifying biological filter and the top of the digesting filter. The utility model discloses the effluent disposal system who carries mark to III types of quality of water on earth's surface to sewage treatment plant discharge waste water who obtains can effectively ensure to wait to carry mark waste water and carry mark to III types of high-quality water standards on earth's surface.
Description
Technical Field
The utility model relates to a waste water treatment technical field especially relates to a carry waste water treatment system of mark to III types of quality of water on earth's surface to sewage treatment plant discharge waste water.
Background
With the increasingly prominent problem of water pollution in China, the improvement of the discharge standard of industrial wastewater treatment is a great trend. From the requirement of improving the quality of the current water environment, the effluent water treated by a plurality of factories is often discharged into urban rivers and becomes the water body of the rivers. The effluent of the existing industrial wastewater treatment plant in China is subjected to advanced treatment, and the discharge standard is mainly referred to the first-class A standard in the discharge Standard of pollutants for municipal wastewater treatment plants (GB 18918-2002). However, for the first class A standard, the water quality is only poor class V water equivalent to surface water and is difficult to degrade. The water quality is discharged into the water body environment without self-purification capacity, so that the water body is not repaired but polluted, and the phenomenon of 'treating the water body more and more dirty' occurs. The water pollution is increasingly aggravated, and the effluent of the refractory industrial wastewater treatment plant is urgently required to be standardized from a first-grade A discharge standard to an earth surface IV or III standard.
TABLE 1 comparison table of water quality from first class A standard to IV or III standard
At present, after the refractory nitrogen-containing organic industrial wastewater including coking, chemical engineering, petrifaction, printing and dyeing, leather, papermaking, medicines, pesticides and the like is subjected to advanced treatment, ammonia nitrogen and most organic matters can be effectively removed, but the wastewater still contains refractory organic matters with certain concentration, ammonia nitrogen, total nitrogen and the like, and the wastewater reaches the first-class A standard after the advanced treatment, but the biodegradability of the wastewater is extremely poor, the ammonia nitrogen concentration is still high, the first-class A wastewater can be upgraded to the IV-class or III-class water quality standard on the ground surface by further treatment, and the treatment difficulty is high.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a carry the effluent disposal system of mark to III types of quality of water on earth's surface to sewage treatment plant emission waste water, this carry the effluent disposal system of mark to III types of quality of water on earth's surface to sewage treatment plant emission waste water can effectively ensure to wait to carry the mark waste water to carry the mark to III types of high-quality water standards on earth's surface.
The utility model adopts the technical proposal that: a wastewater treatment system for upgrading wastewater discharged by a sewage treatment plant to surface III-class water quality is used for treating wastewater and comprises a water collecting tank, a filter tank device, a flocculation sedimentation tank, a fiber rotary disc filter tank and a water purifying tank which are sequentially connected through a pipeline, wherein the input end of the water collecting tank is connected with a water source of wastewater to be upgraded through a pipeline, a first lifting pump is arranged in the water collecting tank, and the output end of the first lifting pump is connected with the input end of the filter tank device; the filter device consists of a nitrifying biological filter, a denitrifying biological filter and a digesting filter which are connected in sequence, back-flushing water inlets are arranged at the bottom of the nitrifying biological filter, the bottom of the denitrifying biological filter and the bottom of the digesting filter, and back-flushing water outlets are arranged at the top of the nitrifying biological filter, the top of the denitrifying biological filter and the top of the digesting filter; a back washing pump is arranged in the clean water tank, the back washing pump is respectively connected with back washing water inlets of the nitrification biological filter, the denitrification biological filter and the digestion filter through back washing pipelines, and electromagnetic valves are arranged on the back washing pipelines; the automatic backwashing device is characterized by further comprising an automatic controller, wherein the electromagnetic valve, the first lifting pump and the backwashing pump are electrically connected to the automatic controller.
As a further limitation to the technical scheme, a water distribution area, a filter plate, a filter head and a filler are sequentially arranged in the nitrification biological filter from bottom to top.
As a further limitation to the technical scheme, a water distribution space, a filler, a filter head and a filter plate are sequentially arranged in the denitrification biological filter from top to bottom, and the top of the denitrification biological filter is connected with a carbon source feeding box through a pipeline.
As a further limitation to the technical scheme, a water distribution area, a filter plate, a filter head and a filler are sequentially arranged in the digestion filter from bottom to top.
As a further limitation to the technical scheme, the filler is any one of ceramsite, volcanic rock, slag, steel slag, coke and HDPE filler.
As a further limitation to the technical scheme, a flow meter and an electromagnetic valve are arranged on a pipeline between the carbon source feeding box and the denitrification biological filter, and both the flow meter and the electromagnetic valve are electrically connected with the automatic controller.
As a further limitation to the technical scheme, aerobic fans are arranged at the top of the nitrification biological filter and the top of the nitrification filter, and back flushing fans are arranged at the top of the denitrification biological filter and the top of the digestion filter.
As a further limitation to the above technical solution, the filter device is a plurality of filter devices arranged in parallel, and the plurality of filter devices can work alternately.
As a further limitation to the above technical scheme, the flocculation sedimentation tank comprises a flocculation sedimentation tank body, a dosing region, a rapid stirring region and a flocculation region are sequentially arranged in the flocculation sedimentation tank body, a phosphorus removal medicament dosing tank and a flocculant dosing tank are arranged at the upper end of the dosing region, and stirrers are arranged in the dosing region and the rapid stirring region; a precipitator is arranged in the flocculation area, and a mud scraper is arranged at the bottom of the flocculation area.
As a further limitation to the above technical scheme, the fiber rotary disc filter tank comprises a tank body, the tank body is composed of a pH adjusting tank, a sewage tank and a clean water tank which are connected in sequence, and the pH adjusting tank and the sewage tank, and the sewage tank and the clean water tank are communicated with each other through communicating holes; and a pH monitor is arranged in the pH adjusting tank and connected to the automatic controller.
Adopt above-mentioned technique, the utility model has the advantages of:
the utility model discloses a carry mark to sewage treatment plant discharge waste water to waste water treatment system of III types of quality of water on earth's surface, increase nitrifying biological filter at first-order A technology end, nitrify the bacterium in the biological filter and can degrade remaining ammonia nitrogen in the waste water of waiting to carry mark into nitrate or nitrite, so can make the content of ammonia nitrogen in the waste water of waiting to carry mark reduce to 1mg/L from 5(8) mg/L, but the total nitrogen content in the waste water does not change this moment; then, the nitrate and nitrite can be reduced into nitrogen, nitric oxide or nitrogen oxide by denitrifying bacteria under the condition of oxygen deficiency through a denitrifying biological filter, so that the total nitrogen content can be degraded to be below 1 mg/L; then, the residual COD can be degraded through a digestion filter; finally, impurities in the water can be removed through a flocculation sedimentation tank and a fiber rotary disc filter, so that effluent meeting the water quality of earth surface III can be obtained; meanwhile, the nitrifying biofilter, the denitrifying biofilter and the digestion filter can be subjected to back flushing operation to clean the nitrifying biofilter, the denitrifying biofilter and the digestion filter, so that the nitrifying biofilter, the denitrifying biofilter and the digestion filter can continuously maintain the working performance; in addition, the automatic controller can automatically control the whole system to realize automatic management.
The carbon source charging box of the utility model can be used for supplementing the carbon source to the inside of the denitrification biological filter, and the carbon source can be easily utilized by denitrifying bacteria in the denitrification biological filter, thereby reducing ammonia nitrogen in the wastewater into nitrogen, nitric oxide or nitrogen oxide; in addition, the carbon source can also provide nutrition for the denitrifying bacteria and ensure the normal growth of the denitrifying bacteria.
Aerobic fan's setting can be used to provide oxygen in nitrifying biological filter and the digestion filter, makes nitrify biological filter and the inside oxygen-enriched state that is in of digestion filter to improve the growth metabolism of nitrifying the biological bacterial of biological filter and the inside inoculation of digestion filter and breed, can effectively improve the treatment effeciency to ammonia nitrogen and COD in the waste water.
The setting of backwash fan can be used for carrying out gas flushing to denitrification biological filter and digestion filter.
The filter tank device is a plurality of that arrange for parallelly connected, so a plurality of filter tank devices can alternate work to the realization improves the treatment effeciency to the continuous processing of waste water.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
in the figure: 1-a water collecting tank; 11-a first lift pump; 2-a filter device; 21-nitrifying biological filter; 22-denitrification biological filter; 23-a digestion filter; 24-an aerobic fan; 25-carbon source feeding box; 26-a back washing fan; 3-a flocculation sedimentation tank; 31-a dosing area; 32-a rapid stirring zone; 33-a flocculation zone; 34-a stirrer; 35-a phosphorus removal medicament dosing box; 36-a flocculant dosing box; 4-fiber rotary disc filter; 41-pH adjusting tank; 42-a sewage tank; 43-clean water pool; 5-a water purifying tank; 51-backwash pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the wastewater treatment system for upgrading wastewater discharged from a sewage treatment plant to surface type iii water quality comprises a water collecting tank 1, a filter tank device 2, a flocculation and sedimentation tank 3, a fiber rotary disc filter tank 4 and a clean water tank 5 which are sequentially connected through a pipeline, wherein the input end of the water collecting tank 1 is connected with a water source of wastewater to be upgraded through a pipeline, a first lift pump 11 is arranged in the water collecting tank 1, and the output end of the first lift pump 11 is connected with the input end of the filter tank device 2; the filter device 2 consists of a nitrifying biological filter 21, a denitrifying biological filter 22 and a digesting filter 23 which are connected in sequence, backwash water inlets are respectively arranged at the bottom of the nitrifying biological filter 21, the bottom of the denitrifying biological filter 22 and the bottom of the digesting filter 23, and backwash water outlets are respectively arranged at the top of the nitrifying biological filter 21, the top of the denitrifying biological filter 22 and the top of the digesting filter 23; a back flush pump 51 is arranged in the clear water tank 5, the back flush pump 51 is respectively connected with back flush water inlets of the nitrifying biological filter 21, the denitrifying biological filter 22 and the digestion filter 23 through back flush pipelines, and electromagnetic valves are arranged on the back flush pipelines; the automatic backwashing device further comprises an automatic controller, and the electromagnetic valve, the first lifting pump 11 and the backwashing pump 51 are electrically connected to the automatic controller. The motor of the first lift pump 11 and the motor of the backwash pump 51 are electrically connected to an automatic controller, which may be a Programmable Logic Controller (PLC).
A nitrifying biological filter 21 is added at the tail end of the first-stage A process, nitrifying bacteria in the nitrifying biological filter 21 can degrade residual ammonia nitrogen in the wastewater to be subjected to extraction into nitrate or nitrite, so that the content of the ammonia nitrogen in the wastewater to be subjected to extraction can be reduced from 5(8) mg/L to 1mg/L, but the total nitrogen content in the wastewater is not changed; then, the denitrifying bacteria can reduce the nitrate and nitrite into nitrogen, nitric oxide or nitrogen oxide under the anoxic condition through the denitrifying biological filter 22, so that the total nitrogen content can be degraded to be below 1 mg/L; then the residual COD can be degraded through a digestion filter 23; finally, impurities in the water can be removed through the flocculation sedimentation tank 3 and the fiber rotary disc filter tank 4, so that effluent meeting the water quality of earth surface III class can be obtained; meanwhile, the nitrifying biofilter, the denitrifying biofilter and the digestion filter can be subjected to back flushing operation to clean the nitrifying biofilter, the denitrifying biofilter and the digestion filter, so that the nitrifying biofilter, the denitrifying biofilter and the digestion filter can continuously maintain the working performance; in addition, the automatic controller can automatically control the whole system to realize automatic management.
A water distribution area, a filter plate, a filter head and filler are sequentially arranged in the nitrifying biological filter 21 from bottom to top. The denitrification biological filter 22 is internally provided with a water distribution space, a filler, a filter head and a filter plate from top to bottom in sequence. The digestion filter 23 is internally provided with a water distribution area, a filter plate, a filter head and a filler from bottom to top in sequence. The fillers in the nitrifying biological filter 21, the denitrifying biological filter 22 and the digesting filter 23 are any one of ceramsite, volcanic rock, slag, steel slag, coke and HDPE fillers.
The top of the denitrification biological filter 22 is connected with a carbon source feeding box 25 through a pipeline. The carbon source feeding box 25 can be used for supplementing a carbon source into the denitrification biological filter, and the carbon source is easily utilized by denitrifying bacteria in the denitrification biological filter, so that ammonia nitrogen in the wastewater is reduced into nitrogen, nitric oxide or nitrogen oxide; in addition, the carbon source can also provide nutrition for the denitrifying bacteria and ensure the normal growth of the denitrifying bacteria. A flow meter and an electromagnetic valve are arranged on a pipeline between the carbon source feeding box 25 and the denitrification biological filter 22, and are electrically connected with an automatic controller, so that the amount of the carbon source added into the denitrification biological filter 22 can be automatically controlled through the automatic controller, and the electromagnetic valve can be opened according to actual requirements to automatically add the carbon source into the denitrification biological filter 22.
The filter device 2 is a plurality of filter devices arranged in parallel, so the filter devices 2 can work alternately, thereby realizing continuous treatment of wastewater and improving the treatment efficiency, and meanwhile, the denitrification biological filter 22 and the digestion filter 23 in the filter devices 2 can be backwashed alternately, so that enough time can be left for the denitrification biological filter 22 and the digestion filter 23 to wash micro bubbles and prevent filler plate from being washed with high intensity. If the treated water quantity is larger, a plurality of filter tank devices 2 can be grouped, and the groups work alternately.
Further, the flocculation sedimentation tank 3 includes the flocculation sedimentation tank body, inside medicine adding area 31, rapid mixing district 32 and the flocculation district 33 of setting gradually of flocculation sedimentation tank body, the upper end that adds medicine area 31 sets up dephosphorization medicament dosing tank 35 and flocculating agent dosing tank 36. Specifically, the phosphorus removal agent is PAC or PFS, and the flocculating agent is PAM. The drug adding area 31 and the rapid stirring area 32 are both provided with a stirrer 34; a precipitator is arranged in the flocculation zone 33, and a mud scraper is arranged at the bottom in the flocculation zone 33. Specifically, a central rod is arranged in the center of the flocculation area 33, transmission supports are arranged around the central rod, a mud scraper positioned at the bottom of the flocculation area 33 is arranged on the transmission supports, and the mud scraper is close to the bottom of the flocculation area 33, so that sludge at the bottom of the flocculation area 33 can be better cleaned; the top of the central rod is provided with a motor support, and the motor support is provided with a motor connected with the transmission support through a rotating shaft, so that the mud scraper can be operated through the motor. The motor is electrically connected with the automatic controller.
Fibre carousel filtering pond 4 includes the cell body, the cell body comprises pH equalizing basin 41, effluent water sump 42 and clean water basin 43 that connect gradually, communicate each other by the intercommunicating pore between pH equalizing basin 41 and the effluent water sump 42, between effluent water sump 42 and the clean water basin 43, and in be equipped with the pH monitor in the pH equalizing basin 41, the pH monitor is connected in automatic control, so pH value in the real-time supervision pH equalizing basin 41 to be used for adjusting the pH in the pH equalizing basin 41 at any time.
The wastewater treatment system is used for treating first-grade A standard wastewater discharged by a sewage treatment plant, and after entering the wastewater treatment system, the effluent water treated by the nitrification biological filter 21, the effluent water treated by the denitrification biological filter 22, the effluent water treated by the digestion filter 23, the effluent water treated by the flocculation sedimentation tank 3 and the effluent water quality treated by the fiber rotary disc filter 4 are detected in real time so as to know the water quality degradation condition, and the specific conditions are shown in the following table:
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be covered by the present invention within the technical scope of the present invention, and the technical solution obtained by replacing or changing the technical idea of the present invention with equivalents.
Claims (10)
1. The utility model provides a carry waste water treatment system of mark to III class quality of water on earth's surface to sewage treatment plant emission waste water which characterized in that: the system comprises a water collecting tank, a filter tank device, a flocculation sedimentation tank, a fiber rotary disc filter tank and a clean water tank which are sequentially connected through pipelines, wherein the input end of the water collecting tank is connected with a water source of wastewater to be subjected to extraction through a pipeline, a first lifting pump is arranged in the water collecting tank, and the output end of the first lifting pump is connected with the input end of the filter tank device; the filter device consists of a nitrifying biological filter, a denitrifying biological filter and a digesting filter which are connected in sequence, back-flushing water inlets are arranged at the bottom of the nitrifying biological filter, the bottom of the denitrifying biological filter and the bottom of the digesting filter, and back-flushing water outlets are arranged at the top of the nitrifying biological filter, the top of the denitrifying biological filter and the top of the digesting filter; a back washing pump is arranged in the clean water tank, the back washing pump is respectively connected with back washing water inlets of the nitrification biological filter, the denitrification biological filter and the digestion filter through back washing pipelines, and electromagnetic valves are arranged on the back washing pipelines; the automatic backwashing device is characterized by further comprising an automatic controller, wherein the electromagnetic valve, the first lifting pump and the backwashing pump are electrically connected to the automatic controller.
2. The wastewater treatment system for upgrading wastewater discharged from a sewage treatment plant to the surface class III water quality according to claim 1, characterized in that: a water distribution area, a filter plate, a filter head and a filler are sequentially arranged in the nitrification biological filter from bottom to top.
3. The wastewater treatment system for upgrading wastewater discharged from a sewage treatment plant to the surface class III water quality according to claim 1, characterized in that: the denitrification biological filter is characterized in that a water distribution space, a filler, a filter head and a filter plate are sequentially arranged in the denitrification biological filter from top to bottom, and the top of the denitrification biological filter is connected with a carbon source feeding box through a pipeline.
4. The wastewater treatment system for upgrading wastewater discharged from a sewage treatment plant to the surface class III water quality according to claim 1, characterized in that: and a water distribution area, a filter plate, a filter head and a filler are sequentially arranged in the digestion filter from bottom to top.
5. The system for wastewater treatment of wastewater treatment plant discharge water up to surface class III quality according to any one of claims 2 to 4, wherein: the filler is any one of ceramsite, volcanic rock, furnace slag, steel slag, coke and HDPE filler.
6. The wastewater treatment system for upgrading wastewater discharged from a sewage treatment plant to the quality of class III water on the ground surface according to claim 3, wherein: and a flow meter and an electromagnetic valve are arranged on a pipeline between the carbon source feeding box and the denitrification biological filter, and both the flow meter and the electromagnetic valve are electrically connected with the automatic controller.
7. The wastewater treatment system for upgrading wastewater discharged from a sewage treatment plant to the surface class III water quality according to claim 1, characterized in that: aerobic fans are arranged at the top of the nitrification biological filter and the top of the nitrification filter, and back flushing fans are arranged at the top of the denitrification biological filter and the top of the digestion filter.
8. The wastewater treatment system for upgrading wastewater discharged from a sewage treatment plant to the surface class III water quality according to claim 1, characterized in that: the filter device is a plurality of filter devices which are arranged in parallel and can work alternately.
9. The wastewater treatment system for upgrading wastewater discharged from a sewage treatment plant to the surface class III water quality according to claim 1, characterized in that: the flocculation sedimentation tank comprises a flocculation sedimentation tank body, a dosing region, a rapid stirring region and a flocculation region are sequentially arranged in the flocculation sedimentation tank body, a dephosphorization agent dosing tank and a flocculant dosing tank are arranged at the upper end of the dosing region, and stirrers are arranged in the dosing region and the rapid stirring region; a precipitator is arranged in the flocculation area, and a mud scraper is arranged at the bottom of the flocculation area.
10. The wastewater treatment system for upgrading wastewater discharged from a sewage treatment plant to a class III water quality on the ground surface according to claim 9, wherein: the fiber rotary disc filter tank comprises a tank body, wherein the tank body consists of a pH adjusting tank, a sewage tank and a clean water tank which are sequentially connected, and the pH adjusting tank is communicated with the sewage tank and the sewage tank are communicated with the clean water tank through communicating holes; and a pH monitor is arranged in the pH adjusting tank and connected to the automatic controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020660605.4U CN212102498U (en) | 2020-04-27 | 2020-04-27 | Wastewater treatment system for upgrading wastewater discharged by sewage treatment plant to III-class water quality on earth surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020660605.4U CN212102498U (en) | 2020-04-27 | 2020-04-27 | Wastewater treatment system for upgrading wastewater discharged by sewage treatment plant to III-class water quality on earth surface |
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| Publication Number | Publication Date |
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| CN212102498U true CN212102498U (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020660605.4U Active CN212102498U (en) | 2020-04-27 | 2020-04-27 | Wastewater treatment system for upgrading wastewater discharged by sewage treatment plant to III-class water quality on earth surface |
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| CN (1) | CN212102498U (en) |
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- 2020-04-27 CN CN202020660605.4U patent/CN212102498U/en active Active
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Address after: 050000 room 706, block B, white commercial plaza, 105 Huai'an East Road, Yuhua District, Shijiazhuang City, Hebei Province Patentee after: Zhongxia Xujie Construction Technology Co.,Ltd. Patentee after: Hebei topbang Environmental Remediation Technology Co.,Ltd. Address before: 050000 room 706, block B, white commercial plaza, 105 Huai'an East Road, Yuhua District, Shijiazhuang City, Hebei Province Patentee before: HEBEI XUJIE ENVIRONMENTAL ENGINEERING Co.,Ltd. Patentee before: Hebei topbang Environmental Remediation Technology Co.,Ltd. |