CN212246646U - Complete device for solving blockage and hardening of biological filter and matched system thereof - Google Patents
Complete device for solving blockage and hardening of biological filter and matched system thereof Download PDFInfo
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- CN212246646U CN212246646U CN202020245315.3U CN202020245315U CN212246646U CN 212246646 U CN212246646 U CN 212246646U CN 202020245315 U CN202020245315 U CN 202020245315U CN 212246646 U CN212246646 U CN 212246646U
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Abstract
The utility model discloses a complete device for solving the blockage and hardening of a biological filter and a matched system thereof, which is formed by sequentially connecting a rotary drum micro-filter, a high-efficiency sedimentation tank, an internal water inlet pore plate grid and a denitrification biological filter in series; adopt the utility model discloses handle, solved the biological filter system at back flush in-process, biological haydite filter material runs off to high-efficient sedimentation tank, blocks up high-efficient sedimentation tank inlet channel, flash mixed district, flocculation reaction zone etc. and leads to the problem of unable normal operating. The filter head of the traditional denitrification biological filter is easy to block due to fibrous impurities by adopting an internal water inlet pore plate grid; the water inlet flow meter is fully utilized, the on-line COD, nitrate nitrogen and total nitrogen monitoring instrument for water inlet of the denitrification biological filter realizes accurate addition of carbon source medicament, the load impact resistance is stronger, the continuous and stable operation of the high-efficiency sedimentation tank is ensured, the effluent of the system is economically and stably discharged up to the standard, and the device has great popularization and application values.
Description
Technical Field
The utility model belongs to the technical field of water pollution control, concretely relates to solve biological filter and supporting system thereof and block up integrated equipment that hardens
Background
With the popularization of urban sewage treatment, the construction of sewage treatment plants is increasingly covered in China. The biological aerated filter has been widely applied to sewage denitrification treatment due to the advantages of small occupied area, low maintenance cost, easy operation, convenient and flexible operation and management and the like. However, with the gradual application of the biological aerated filter, during the back washing process of the biological aerated filter, the filter material is easy to run off, and the back washing wastewater enters the front-section efficient sedimentation tank to block a water inlet pipeline, a rapid mixing zone, a flocculation reaction zone and the like of the efficient sedimentation tank, so that the efficient sedimentation tank cannot normally run, and the running filter material needs to be cleaned by frequent shutdown. The filter head of the biological filter is easy to block due to fibrous impurities, and along with the continuous operation time, the filter has high operation pressure, and the filter material is easy to harden or partially harden. Therefore, a new technical solution needs to be developed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve the above-mentioned problem, provide a solve biological filter and supporting system and block up the integrated equipment that hardens to break through the difficult problem that meets at present. The specific contents are as follows: the utility model provides a solve biological filter and supporting system thereof and block up integrated equipment that hardens which characterized in that: the device is formed by sequentially connecting a rotary drum micro-filter, a high-efficiency sedimentation tank, an internal water inlet pore plate grid and a denitrification biological filter in series; the upper water outlet of the high-efficiency sedimentation tank is connected with the upper water distribution channel of the denitrification biological filter; the high-efficiency sedimentation tank comprises a PAC dephosphorization dosing system and a PAM dosing system; a carbon source dosing system is arranged at the water inlet section of the denitrification biological filter; the denitrification biological filter also comprises an air-water backwashing system.
The aperture of the rotary drum micro-filter is not more than 2 mm.
The aperture of the internal water inlet pore plate grid is not more than 1 mm.
The high-efficient sedimentation tank constitute by flash mixed district, flocculation reaction district, transition district, sedimentation disengagement zone, sludge concentration district, surplus sludge discharge system, the flash mixed district is equipped with fast muddy agitator, the flocculation reaction district is equipped with mixes agitator, water conservancy diversion bucket slowly, the transition district is equipped with the barricade, the sedimentation disengagement zone is equipped with skimming pipe, mud scraper, pipe chute, the sludge concentration district is equipped with surplus sludge discharge system.
The denitrification biological filter comprises a water distribution area, a bearing layer, a ceramsite filter material reaction layer, a clear water area, a water outlet channel and a water outlet pipeline from bottom to top in sequence, wherein a long-handle filter head and a filter plate are arranged in the water distribution area, and the bearing layer and the ceramsite filter material reaction layer are arranged on the long-handle filter head and the filter plate.
The thickness of the ceramsite filter layer of the denitrification biological filter is 1.5-4.0 m, and the diameter of the ceramsite is 3-9 mm.
The gas-water backwashing system comprises a backwashing fan, a backwashing water pump, a water distribution pipeline and a gas distribution pipeline; the back washing fan, the back washing water pump and the regulating valve are connected with the program automatic control system.
The water inlet end of the high-efficiency sedimentation tank is provided with a water inlet flow meter; an online COD, nitrate nitrogen and total nitrogen multifunctional monitoring instrument is arranged in the water inlet end of the denitrification biological filter.
The utility model discloses a rotary drum micro-filter has solved the biological filter system at back flush in-process, and biological haydite filter material runs off to high-efficient sedimentation tank, blocks up high-efficient sedimentation tank inlet channel, flash mixed district, flocculation reaction zone etc. and leads to the problem of unable normal operating. The filter head of the traditional denitrification biological filter is easy to block due to fibrous impurities by adopting an internal water inlet pore plate grid; the water inlet flow meter is fully utilized, the on-line COD, nitrate nitrogen and total nitrogen monitoring instrument for water inlet of the denitrification biological filter realizes accurate addition of carbon source medicament, the load impact resistance is stronger, the continuous and stable operation of the high-efficiency sedimentation tank is ensured, the effluent of the system is economically and stably discharged up to the standard, and the device has great popularization and application values.
Drawings
FIG. 1 is a flow chart of a complete equipment for solving the problem of blockage and hardening of a biological filter and a supporting system thereof. Fig. 2 is a schematic structural view of a complete set of devices for solving the problem that the biological filter and the supporting system thereof are hardened due to blockage.
Wherein: 1. a water inlet pipeline, 2, a rotary drum micro-filter, 3, a high-efficiency sedimentation tank, 4, a rapid mixing zone, 5, a flocculation reaction zone, 6, a transition zone (enhanced flocculation), 7, a sedimentation separation zone, 8, a sludge concentration zone, 9, a rapid mixing stirrer, 10, a slow mixing stirrer, 11, a mud scraper, 12, a guide cylinder, 13, a skimming pipe, 14, a retaining wall, 15, an inclined pipe, 16, a mud discharge valve, 17, a mud discharge pipeline, 18, a PAC dephosphorization dosing system, 19, a PAM dosing system, 20, an inner water inlet orifice grating, 21, a denitrification biological filter, 22, a water distribution zone, 23, a support layer, 24, a ceramsite filter material reaction layer, 25, a clear water zone, 26, a back flush outlet channel, 27, a back flush filter, a long handle filter head, 28, a filter plate, 29, a back flush outlet valve, 30, a back flush outlet pipeline, 31, a water pump, 32, a water inlet pipe, 33 and a water inlet valve, 34. the system comprises a back flush fan, 35, a back flush air inlet pipe, 36, a back flush air inlet valve, 37, a carbon source dosing system, 38, an inlet water flow meter, 39, an on-line COD (chemical oxygen demand), nitrate nitrogen and total nitrogen multifunctional monitoring instrument, 40, a program automatic control system, 41, a control cable, 42 and a water outlet pipeline
Detailed Description
The present invention will be further explained with reference to fig. 1 and 2 below:
the utility model provides a solve biological filter and supporting system thereof and block up integrated equipment that hardens which characterized in that: the device is formed by sequentially connecting a rotary drum micro-filter (2), a high-efficiency sedimentation tank (3), an internal water inlet pore plate grid (20) and a denitrification biological filter (21) in series; the water outlet at the upper part of the high-efficiency sedimentation tank (3) is connected with a water distribution channel at the upper part of the denitrification biological filter (21); the high-efficiency sedimentation tank (3) comprises a PAC dephosphorization dosing system (18) and a PAM dosing system (19); a carbon source dosing system (37) is arranged at the water inlet section of the denitrification biological filter (21); the denitrification biological filter (21) also comprises an air-water backwashing system.
The aperture of the rotary drum micro-filter (2) is not more than 2 mm.
The aperture of the internal water inlet pore plate grid (20) is not more than 1 mm.
High-efficient sedimentation tank (3) constitute by flash mixed district (4), flocculation reaction district (5), transition district (intensification flocculation) (6), sedimentation disengagement district (7), sludge concentration district (8), surplus sludge discharge system, flash mixed district (4) is equipped with mixes agitator (9) soon, flocculation reaction district (5) is equipped with mixes agitator (10), draft tube (12) slowly, transition district (intensification flocculation) (6) is equipped with barricade (14), sedimentation disengagement district (7) are equipped with skimming pipe (13), mud scraper (11), pipe chute (15), sludge concentration district (8) are equipped with surplus sludge discharge system.
The denitrification biological filter (21) is sequentially composed of a water distribution area (22), a bearing layer (23), a ceramsite filter material reaction layer (24), a clear water area (25), a water outlet channel (26) and a water outlet pipeline (42) from bottom to top, wherein a long-handle filter head (27) and a filter plate (28) are arranged in the water distribution area (22), and the bearing layer (23) and the ceramsite filter material reaction layer (24) are arranged on the long-handle filter head.
The thickness of the ceramsite filter material layer (24) of the denitrification biological filter (21) is 1.5-4.0 m, and the diameter of the ceramsite is 3-9 mm.
The gas-water backwashing system comprises a backwashing fan (34), a backwashing water pump (31), water distribution and gas distribution pipelines (32, 35); the back washing fan (34), the back washing water pump (31) and the regulating valves (36 and 33) are connected with a program automatic control system (40).
And a water inlet flow meter (38) is arranged at the water inlet end of the high-efficiency sedimentation tank (3). An on-line COD, nitrate nitrogen and total nitrogen multifunctional monitoring instrument (39) is arranged in the water inlet end of the denitrification biological filter (21).
A treatment process of a complete set of devices for solving the blockage and hardening of a biological filter and a matched system thereof comprises the following treatment steps:
(1) the method comprises the following steps that (1) pretreated raw sewage (coarse/fine grids) is firstly subjected to rotary drum micro-filtration (2) to intercept substances such as fine suspended matters, fibers, paper pulp, algae and biological ceramsite which is washed away by backwashing of a filter tank, so that solid-liquid two-phase separation is realized, and the situation that a biological ceramsite filter material is lost to a high-efficiency sedimentation tank (3) to block a water inlet pipeline, a rapid mixing zone (4), a flocculation reaction zone (5) and the like of the high-efficiency sedimentation tank (3) to cause abnormal operation is prevented in the backwashing process of a biological filter tank system; the treated effluent enters a high-efficiency sedimentation tank (3);
(2) adding iron salt or aluminum salt into a rapid mixing zone (4) of a high-efficiency sedimentation tank (3), adding PAM into a flocculation reaction zone (5), after passing through the rapid mixing zone (4), the flocculation reaction zone (5), a transition zone (reinforced flocculation) (6) and a sedimentation separation zone (7), HRT 20-45 min, and the ascending flow rate is 6-30 m/h, so that the chemical phosphorus removal reaction (TP < 1.0mg/L) is completed, and after passing through a sludge concentration zone (8) and a residual sludge discharge system, the concentrated sludge is subjected to partial reflux, and the residual sludge is periodically discharged, so that the removal effect of suspended matters in water is realized; the effluent of the high-efficiency sedimentation tank (3) automatically flows through an internal water inlet pore plate grid (20);
(3) the inner water inlet pore plate grid (20) intercepts all fibrous substances and impurities to prevent the fibrous substances from causing the blockage of a long handle filter head (27) at the bottom of the subsequent denitrification biological filter (21), and the treated effluent enters the denitrification biological filter (21);
(4) the denitrification and the removal of biochemical organic matters are completed in the denitrification biological filter (21); the program automatic control system (40) automatically controls the optimal carbon source dosage according to the data of total nitrogen, nitrate nitrogen, COD (39) and a water inflow flowmeter (38) in the collected wastewater; a large amount of denitrifying microbial films are attached to a biological filter material layer (24) in the denitrifying biological filter (21), denitrification is completed through denitrification, and the filtering speed of the denitrifying biological filter is controlled to be 8-20 m/h; the backwashing is carried out by adopting a 'precipitation level + gas-water combination method', the backwashing period is 12-24 h, wherein the gas washing is 12-30L per square meter S, and the water washing is 4-6L per square meter S.
The utility model discloses a rotary drum micro-filter (2) have solved biological filter system at back flush in-process, and biological haydite filter material runs off to high-efficient sedimentation tank (3), blocks up high-efficient sedimentation tank (3) inlet channel, flash mixed district (4), flocculation reaction district (5) etc. and leads to the problem of unable normal operating. The internal water inlet pore plate grating (20) is adopted, so that the problem that the filter head of the traditional denitrification biological filter (21) is easy to block due to fibrous impurities is thoroughly solved; the carbon source medicament is accurately added by fully utilizing the inflow flowmeter (38) and the online COD, nitrate nitrogen and total nitrogen monitoring instrument (39) for inflow of the denitrification biological filter (21), the load impact resistance is stronger, the continuous and stable operation of the high-efficiency sedimentation tank is ensured, the effluent of the system is economically and stably discharged after reaching the standard, and the method has great popularization and application values.
Example 1:
the standard extraction wastewater of a certain sewage treatment plant in Henan province has the treatment flow of 50000m3After pretreatment (coarse/fine grid)Before raw sewage enters the process device for treatment, the indexes of pollutants are as follows: COD 200mg/L, BOD5100mg/L, TN 35mg/L, SS 150mg/L, TP 2.5mg/L, nitrate 27 mg/L; after the treatment by the process, the effluent quality indexes are as follows: COD 35mg/L, BOD5＝15mg/L，SS＝10mg/L， TN＝11mg/L，TP＝0.2mg/L。
Example 2:
a municipal sewage treatment plant in Liuan City of Anhui province, with a treatment flow of 10000m3And d, the indexes of pollutants before the raw sewage after pretreatment (coarse/fine grids) enters the process are as follows: 300mg/L of COD, BOD5140mg/L, SS 210mg/L, TN 40mg/L, nitrate 30 mg/L; after the treatment of the process device, the effluent quality indexes are as follows: COD 35mg/L, BOD5＝8mg/L，SS＝15mg/L，TN＝12mg/L。
Example 3:
the treatment flow of a certain municipal sewage treatment plant is 100000m3And d, the indexes of pollutants before the raw sewage after pretreatment (coarse/fine grids) enters the process are as follows: 300mg/L of COD, BOD5140mg/L, 210mg/L SS, 40mg/L TN and 20mg/L ammonia nitrogen; after the treatment of the process device, the effluent quality indexes are as follows: COD 35mg/L, BOD5＝8mg/L，SS＝10mg/L，TN＝22mg/L。
The utility model discloses a rotary drum micro-filter has solved the biological filter system at back flush in-process, and biological haydite filter material runs off to high-efficient sedimentation tank, blocks up high-efficient sedimentation tank inlet channel, flash mixed district, flocculation reaction zone etc. and leads to the problem of unable normal operating. The filter head of the traditional denitrification biological filter is easy to block due to fibrous impurities by adopting an internal water inlet pore plate grid; the water inlet flow meter is fully utilized, the on-line COD, nitrate nitrogen and total nitrogen monitoring instrument for water inlet of the denitrification biological filter realizes accurate addition of carbon source medicament, the load impact resistance is stronger, the continuous and stable operation of the high-efficiency sedimentation tank is ensured, the effluent of the system is economically and stably discharged up to the standard, and the device has great popularization and application values.
The above-mentioned embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (8)
1. The utility model provides a solve biological filter and supporting system thereof and block up integrated equipment that hardens which characterized in that: the device is formed by sequentially connecting a rotary drum micro-filter, a high-efficiency sedimentation tank, an internal water inlet pore plate grid and a denitrification biological filter in series; the upper water outlet of the high-efficiency sedimentation tank is connected with the upper water distribution channel of the denitrification biological filter; the high-efficiency sedimentation tank comprises a PAC dephosphorization dosing system and a PAM dosing system; a carbon source dosing system is arranged at the water inlet section of the denitrification biological filter; the denitrification biological filter also comprises an air-water backwashing system.
2. The complete equipment for solving the blockage and hardening of the biofilter and the matched system thereof according to claim 1, wherein: the aperture of the rotary drum micro-filter is not more than 2 mm.
3. The complete equipment for solving the blockage and hardening of the biofilter and the matched system thereof according to claim 1, wherein: the aperture of the internal water inlet pore plate grid is not more than 1 mm.
4. The complete equipment for solving the blockage and hardening of the biofilter and the matched system thereof according to claim 1, wherein: the high-efficient sedimentation tank constitute by flash mixed district, flocculation reaction district, transition district, sedimentation disengagement zone, sludge concentration district, surplus sludge discharge system, the flash mixed district is equipped with fast muddy agitator, the flocculation reaction district is equipped with mixes agitator, water conservancy diversion bucket slowly, the transition district is equipped with the barricade, the sedimentation disengagement zone is equipped with skimming pipe, mud scraper, pipe chute, the sludge concentration district is equipped with surplus sludge discharge system.
5. The complete equipment for solving the blockage and hardening of the biofilter and the matched system thereof according to claim 1, wherein: the denitrification biological filter comprises a water distribution area, a bearing layer, a ceramsite filter material reaction layer, a clear water area, a water outlet channel and a water outlet pipeline from bottom to top in sequence, wherein a long-handle filter head and a filter plate are arranged in the water distribution area, and the bearing layer and the ceramsite filter material reaction layer are arranged on the long-handle filter head and the filter plate.
6. The complete equipment for solving the blockage and hardening of the biofilter and the matched system thereof according to claim 1, wherein: the thickness of the ceramsite filter layer of the denitrification biological filter is 1.5-4.0 m, and the diameter of the ceramsite is 3-9 mm.
7. The complete equipment for solving the blockage and hardening of the biofilter and the matched system thereof according to claim 1, wherein: the gas-water backwashing system comprises a backwashing fan, a backwashing water pump, a water distribution pipeline and a gas distribution pipeline; the back washing fan, the back washing water pump and the regulating valve are connected with the program automatic control system.
8. The complete equipment for solving the blockage and hardening of the biofilter and the matched system thereof according to claim 1, wherein: the water inlet end of the high-efficiency sedimentation tank is provided with a water inlet flow meter; an online COD, nitrate nitrogen and total nitrogen multifunctional monitoring instrument is arranged in the water inlet end of the denitrification biological filter.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111170591A (en) * | 2020-03-03 | 2020-05-19 | 安徽绿衡环保科技有限公司 | Complete device for solving blockage and hardening of biological filter and matched system thereof and treatment process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111170591A (en) * | 2020-03-03 | 2020-05-19 | 安徽绿衡环保科技有限公司 | Complete device for solving blockage and hardening of biological filter and matched system thereof and treatment process thereof |
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