CN212610105U

CN212610105U - Improvement SBR sewage treatment plant

Info

Publication number: CN212610105U
Application number: CN202020490124.3U
Authority: CN
Inventors: 张�杰; 黄崇鸿; 胡天意
Original assignee: Shuiyi Holding Group Co ltd
Current assignee: Shuiyi Environmental Protection Group Co ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-02-26
Anticipated expiration: 2030-04-07

Abstract

The utility model provides an improvement SBR sewage treatment plant, it is including taking the sediment equalizing basin that separates of elevator pump, and its rear end connects gradually two sets of SBR ponds, coagulation tank, one-level sedimentation tank, second grade sedimentation tank, the filler filtering pond of connecting in parallel, the SBR pond does not have the hydrophone of straining, realizes producing water through the water-lifting mode promptly, and the top sets up the triangle weir all around and collects the SBR and goes out the water, sets up the fixed filler subassembly of mobile cuboid form in the pond, hangs soft combined filler, but filler filtering pond adopts modularization, quick replacement structure, can come out water standard replacement to different depth processing unit. The novel intelligent control sewage treatment system has the advantages of simple hydraulic structure, less power equipment, less fault points, low operation energy consumption, low maintenance cost, convenience in use, long service life, modularization, flexible combination and full automation.

Description

Improvement SBR sewage treatment plant

Technical Field

The utility model relates to a water treatment technical field especially relates to an improvement SBR sewage treatment plant.

Background

The overall process used in the existing village and town sewage treatment facilities in China is similar to the urban sewage treatment facilities and is based on different combinations of physicochemical treatment, biochemical treatment and natural ecological treatment. In the existing town sewage treatment process technology in China, the main problems related to the activated sludge method are as follows: AO and its various modification processes (e.g., A2O, oxidation ditch, SBR, etc.); the process technologies related to the biofilm method mainly comprise: biofilters, MBBR (Moving Bed Biofilm Reactor), biological contact oxidation, biological rotating disks, and the like; the process technology related to the natural ecological method technology mainly comprises the following steps: artificial wetlands, stabilization ponds and the like; in addition, there are anaerobic technology, membrane treatment technology typified by MBR, and the like.

According to the research results of village sewage treatment technologies published by department related to residential buildings, 52 treatment technologies are involved in researched village sewage treatment facilities, wherein the maximum treatment technology is 25% of the total treatment technologies by adopting a biomembrane method; compared with the traditional activated sludge method, the biofilm method has the advantages of stable operation with impact load resistance, strong denitrification efficiency, strong impact load resistance, economy, energy conservation, no sludge bulking problem, low sludge yield and the like, so the biofilm method is more suitable for sewage treatment of villages and towns.

The traditional Sequencing Batch Reactor (SBR) can realize the processes of nitration, denitrification, phosphorus absorption, phosphorus release and the like in one reactor, thereby obtaining certain denitrification and phosphorus removal effects. However, due to different environmental conditions, contradiction of sludge age, and mutual influence among products, SBR has a difficult effect of removing nitrogen and phosphorus. Researches show that the biomembrane carrier is easy to enrich ammonia oxidizing bacteria, and can improve 50% of Sludge Retention Time (SRT), which provides a solution for the contradiction problem of sludge age of the denitrification and dephosphorization microorganisms in the same reactor. And secondly, because the biological membrane has spatial heterogeneity, the oxygen concentration is changed in a certain gradient in the mass transfer direction, different types of microorganisms have the opportunity to select favorable space for survival and propagation, and the oxygen concentration gradient also provides favorable environmental conditions for synchronous nitrogen and phosphorus removal, which indicates that the biological membrane has favorable application potential of nitrogen and phosphorus removal.

Aiming at the characteristics of multiple points and wide range of village and town sewage, incomplete pipe network matching, difficult collection and the like, the advantage of distributed sewage treatment is more prominent. The development of practical technology and the transformation of high-efficiency and low-consumption integrated equipment have become necessary trends. The technology and equipment need to meet the following points: firstly, various pollutants are efficiently treated, the effluent is stably discharged up to the standard, and the recycling of sewage in villages and towns can be preferably realized; secondly, the treatment equipment is simple, the occupied area of the equipment is small, the investment cost is low, and the operation cost is low; thirdly, the operation is simple and convenient, the objective requirement of professional talent management and maintenance is avoided, the automation degree is high, and the best degree can reach the unmanned management degree. Therefore, the development of an integrated device with low energy consumption and high integration degree by combining the traditional SBR process and the biofilm process has important significance.

Disclosure of Invention

The utility model discloses based on the advantage of IFAS technology and SBR technology, development is applicable to among the distributed sewage treatment has high-efficient synchronous nitrogen and phosphorus removal function, low, the improvement SBR sewage treatment plant and method of modularization integrated form of working costs. The utility model discloses the sewage treatment plant who creates, the advantage is complementary, and the intention is novel, design benefit. The utility model aims to solve the problems that the oxygen dissolving device comprises a slag separation regulating reservoir with a lift pump, and two sets of SBR pools, a coagulation pool, a first-level sedimentation pool, a second-level sedimentation pool and a filler filter pool which are connected in parallel are sequentially connected at the rear end of the regulating reservoir, a water inlet of the regulating reservoir is provided with a basket fine grid for intercepting fine suspended matters and particles, the bottom of the regulating reservoir is also provided with a perforated pipe aerator for regular stirring, water flows into the SBR pools through a water passing partition plate arranged at the bottom between the regulating reservoir and the SBR pools, a micropore aeration disc is uniformly arranged at the bottom of the SBR pools for oxygenating the aeration to ensure the dissolved oxygen in the activated sludge treatment process, the bottom of the SBR pools is also provided with a transverse water distribution pipe which is connected with a water inlet pipe vertically arranged at the center, the top of the water inlet pipe is provided with a water outlet pipe, the water in the water distribution pipe flows into the water, and then the water flows out of the water outlet pipe at the top in a mode of passing through the top water from the water inlet pipe, a first triangular weir for collecting the top water is arranged around the top, one side of the triangular weir is connected with a coagulation basin, the other side of the coagulation basin is connected with a first-level sedimentation basin through a water hole at the middle bottom, the top of the first-level sedimentation basin is provided with a second triangular weir, the second triangular weir enters the second-level sedimentation basin through a water passage, the second-level sedimentation basin is connected to the filler filter basin through a weir plate, a filter basin is arranged in the filler filter basin, the bottom of the water distribution basin is provided with a filter basin treatment area, the top of one side of the filter basin treatment area is provided with a third triangular weir, and an immersion type liquid level meter is arranged in the regulating basin and the SBR basin and.

Preferably, the method comprises the following steps: the SBR tank is square in section, the four water distribution pipes are arranged along the diagonal direction in the tank, and water outlets of the water distribution pipes are downward at 90 degrees, so that a sludge layer is prevented from being stirred when water enters.

Preferably, the method comprises the following steps: the elevator pump advances water piping connection to central inlet tube top, upper portion sets up the backward flow mouth in the central inlet tube, prevents that pond mud from backward flowing to the equalizing basin.

Preferably, the method comprises the following steps: the SBR tank is internally provided with a movable cuboid fixed packing assembly, the packing assembly is composed of fixed packing frames which are uniformly distributed, hanging ropes which are uniformly distributed are arranged in the fixed packing frames, the packing which is uniformly distributed is hung on the hanging ropes, the packing is soft combined packing, semicircular hoisting ears which are used for facilitating hoisting are arranged at the top of the packing frames, stair-shaped fixed feet are arranged on two sides of the bottom of the fixed packing frames, and the fixed feet are fixed on the bottom edge of the SBR tank.

Preferably, the method comprises the following steps: the rectangular aerator consisting of perforated aeration pipes is hung at a certain height in the coagulation tank, and is supplied with air by an electromagnetic diaphragm air pump, so that the rapid mixing of the dephosphorization agent and the produced water is met through air stirring.

Preferably, the method comprises the following steps: the bottom of the first-level sedimentation tank and the bottom of the second-level sedimentation tank are both processed into a conical sludge hopper which forms an angle of 45 degrees with the horizontal plane, and the bottom of the sludge hopper is provided with a sludge discharge pipe which is connected out of the equipment and used for discharging sludge regularly through an electric valve or a manual butterfly valve. The secondary sedimentation tank is provided with a detachable inclined plate/inclined pipe, so that the sedimentation effect is improved.

Preferably, the method comprises the following steps: the filler filter tank is used for treating water by bottom water inlet and upflow, the bottom of a filter tank treatment area is respectively provided with a bottom stainless steel partition plate, a filler bearing layer, filler/filter materials and a top stainless steel partition plate from bottom to top, a rectangular aerator consisting of perforated aeration pipes is arranged between the bottom stainless steel partition plate and the filler bearing layer, the aerator is connected to an aeration pipe on the wall of the tank through electromagnetic diaphragm air pump air supply, and the filler/filter materials in the filter tank are subjected to air backwashing at regular intervals. And a backwashing drainage pump is arranged at the bottom of the filler filter tank, backwashing is periodically carried out, backwashing liquid is discharged into the regulating tank through the backwashing drainage pump after the gas backwashing, and the filter tank enters the next water inlet process after being emptied.

Preferably, the method comprises the following steps: the filler/filter material in the filler filter tank is filled into a filter material container processed by a stainless steel perforated plate, semicircular hoisting lugs for facilitating hoisting are arranged on two sides of the top of the filter material container, and manual convenient replacement of the filter material can be realized. The filler/filter material is in a modularized mode, can be replaced by quartz sand/activated carbon to form a sand filter/activated carbon filter, can be replaced by a volcanic filter material to form a biological aerated filter or a denitrification filter, and can be replaced by a sulfur composite filter material to form an autotrophic denitrification filter, so that different sewage treatment discharge standards are met, and the filter is flexibly combined.

The utility model has the advantages of it is following: 1. the SBR process and the IFAS process are coupled, the characteristics of uniform and complete mixing of a sequencing batch reactor and the characteristics of efficient denitrification and high impact load resistance of the IFAS process are fully exerted, and meanwhile, a coagulation sedimentation unit and an advanced treatment filter unit are integrated in the device, so that the denitrification and dephosphorization of the process are well realized, and the requirements of different effluent standards can be met. 2. The SBR process without the decanter adopts a top water production mode, has a simple hydraulic structure, uses less power equipment, has less operation fault points, saves the operation and maintenance cost, saves the operation period by more than 14 percent compared with the traditional SBR process, improves the volume utilization rate by more than 20 percent, and saves the operation power consumption by about 24 percent. And 3, a movable fixed filling support is adopted in the SBR tank, the biological membrane biomass is large, the microbial structure is rich, sludge is not easy to run off, a space can be provided for the production activity of microorganisms, and the movable filling support is easy to maintain. 4. The filler filter unit adopts a modularized and quick replaceable structure, can be replaced by fillers of different depth treatment units according to different water outlet standards, and has flexible application mode and wide application range. 5. The utility model discloses a PLC intelligent control realizes unmanned on duty, regularly patrols and examines to reduce human factor's interference.

Drawings

Fig. 1 is a schematic top view of the present invention.

Fig. 2 is a schematic sectional view of the structure of the present invention.

Fig. 3 is a schematic sectional view of the structure of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings: 1-3, an improved SBR sewage treatment device comprises a slag separation regulating reservoir 2 with a lift pump, wherein a water inlet of the regulating reservoir is provided with a basket fine grid for intercepting fine suspended matters and particles, a pressure immersion type liquid level meter 29 is arranged for monitoring and controlling liquid level, the bottom of the regulating reservoir is subjected to timed aeration stirring by a perforated pipe aerator 26, a water inlet end is welded with a water separation plate 1, and the bottom of the regulating reservoir is subjected to water passing so as to realize the slag separation of floating objects; the rear end of the device is sequentially connected with two sets of SBR tanks 3 and 4 which are connected in parallel, a coagulation tank 11, a first-stage sedimentation tank 10, a second-stage sedimentation tank 9 and a filler filter tank 6,

microporous aeration discs

24 and 25 are uniformly distributed at the bottom of the SBR reaction tank to oxygenate the aeration, dissolved oxygen in the activated sludge treatment process is ensured, a lifting pump water outlet pipe 14 is arranged at the same time, an SBR central water inlet pipe 15 and a water distribution pipe 12 at the bottom of the water inlet pipe are arranged at the center of a square tank, the lifting pump enters the bottom of the SBR tank through the lifting pump water inlet pipe 14, the central water inlet pipe 15 and the water distribution pipe 12, water production is realized through a water jacking mode, a triangular weir 13 is arranged at the periphery of the top to collect SBR effluent, immersion type

liquid level meters

27 and 28 are arranged to monitor and control the liquid level, after entering the coagulation and dephosphorization agent and the SBR effluent are rapidly stirred, the coagulation and the effluent enter, the effluent enters the secondary sedimentation tank 9 through the water passage 8 after passing through the top effluent triangular weir, the effluent after secondary sedimentation treatment enters the filler filter 6 through the weir plate 16, and the effluent enters the filter treatment zone after passing through the filter water distribution tank 7 and the water distribution zone at the bottom of the filler for treatment, and the effluent is collected by the top triangular weir 5 at one side.

As shown in figure 1, the sections of the SBR tanks 3 and 4 are square, the four water distribution pipes 12 are arranged along the diagonal direction in the tank, and the water outlets of the water distribution pipes are downward at 90 degrees, so that a sludge layer is prevented from being stirred when water enters.

As shown in figure 2, the water inlet pipe 14 of the lift pump is connected to the top of the central water inlet pipe 15, and the middle upper part of the central water inlet pipe is provided with a backflow port 30 to prevent sludge in the tank from flowing back to the regulating tank.

Fig. 3 shows, be equipped with the fixed filler subassembly 31 that is mobile and cuboid form in the SBR pond, the filler subassembly is the fixed filler frame of evenly arranging and constitutes, the inside of fixed filler frame is equipped with the rope of hanging of evenly arranging to hang the filler of evenly arranging on hanging the rope, it packs 32 for soft combination, the top of filler frame is equipped with the semicircle shape hoist and mount ear that is used for making things convenient for hoist and mount to use, fixed filler frame bottom both sides are equipped with the fixed foot of stair form, fixed foot is fixed on SBR pond base.

A rectangular aerator consisting of perforated aeration pipes is hung at a certain height in the coagulation tank 11, an electromagnetic diaphragm air pump supplies air, and the rapid mixing of a dephosphorization agent and produced water is met through air stirring.

As shown in figure 1, the bottoms of the first-stage sedimentation tank 10 and the second-stage sedimentation tank 9 are processed into

conical sludge hoppers

17 and 18 which form a 45-degree angle with the horizontal plane, the bottoms of the sludge hoppers are provided with sludge discharge pipes which are connected out of the equipment, and sludge is periodically discharged through an electric valve or a manual butterfly valve. The secondary sedimentation tank 9 is provided with a detachable inclined plate/inclined pipe, so that the sedimentation effect is improved.

As shown in figure 3, the filler filter 6 is used for treating effluent by bottom water inflow and upflow, the bottom of the filter treatment zone is respectively provided with a bottom stainless steel clapboard 21, a filler bearing layer 23, a filler/filter material 19 and a top stainless steel clapboard from bottom to top, a rectangular aerator 22 consisting of perforated aeration pipes is arranged between the bottom stainless steel clapboard and the filler bearing layer, air is supplied by an electromagnetic diaphragm air pump, the aerator is connected to an aerator through an aeration pipe 20 on the wall of the filter, and the filler/filter material in the filter is subjected to air backwashing at regular intervals. And a backwashing drainage pump is arranged at the bottom of the filler filter tank, backwashing is periodically carried out, backwashing liquid is discharged into the regulating tank through the backwashing drainage pump after the gas backwashing, and the filter tank enters the next water inlet process after being emptied.

The filler/filter material 19 in the filler filter tank is filled into a filter material container processed by a stainless steel perforated plate, semicircular hoisting lugs for facilitating hoisting are arranged on two sides of the top of the filter material container, and manual convenient replacement of the filter material can be realized. The filler/filter material is in a modularized mode, can be replaced by quartz sand/activated carbon to form a sand filter/activated carbon filter, can be replaced by a volcanic filter material to form a biological aerated filter or a denitrification filter, and can be replaced by a sulfur composite filter material to form an autotrophic denitrification filter, so that different sewage treatment discharge standards are met, and the filter is flexibly combined.

A method for improving SBR sewage treatment comprises the following steps:

a. sewage enters the regulating tank through the collecting pipeline, particles and suspended matters in water are intercepted through the fine grids and the sediment, the treated sewage enters the regulating tank through the bottom partition plate to be homogenized and equalized, and then the sewage is lifted by the lifting pump to enter the secondary treatment system.

b. The sewage enters two sets of SBR tanks which are operated in parallel through a water distributor positioned in the center of the tank and the bottom of the tank respectively to realize biochemical degradation and precipitation separation of the sewage, then the sewage sequentially passes through a coagulation tank to be added with drugs, stirred and coagulated, and after the precipitation and precipitation separation of a primary sedimentation tank and a secondary sedimentation tank, the sewage is deeply treated by a filler filter tank, and then the effluent reaching the standard is collected and discharged through a top water collection triangular weir.

c. The filler filter tank is periodically subjected to air backwashing, and backwashing wastewater flows back to the regulating tank; the residual sludge in the SBR tank, the primary sedimentation tank and the secondary sedimentation tank is automatically/manually discharged into a sludge digestion tank from a sludge discharge pipe at regular intervals to reduce the organic sludge, and then is discharged into a sludge storage tank to be transported outwards at regular intervals.

In the step bThe SBR operation logic is water inlet, reaction, aeration and precipitation, the operation time sequence is respectively that water is inlet for 40-60 min, the reaction and aeration time is 80-120 min, the precipitation time is 40-60 min, the SBR periodic water discharge ratio is about 30%, and the designed sludge age is 9-12 d. The surface load of the primary sedimentation tank is 9.67-12.09 m³/m²H, the surface load of the secondary sedimentation tank is 4.84-6.04 m³/m²H, the surface load of the filler filter is 3.22-4.03 m³/m²·h。

Claims

1. An improved SBR sewage treatment device comprises a slag separation regulating reservoir with a lift pump, and two sets of SBR pools, a coagulation pool, a first-level sedimentation pool, a second-level sedimentation pool and a filler filter pool which are connected in parallel are sequentially connected at the rear end of the regulating reservoir, and is characterized in that a water inlet of the regulating reservoir is provided with a basket fine grid for intercepting fine suspended matters and particles, the bottom of the adjusting reservoir is also provided with a perforated pipe aerator for timing stirring, water flows into the SBR pools through a water passing partition plate arranged at the bottom between the regulating reservoir and the SBR pools, a microporous aeration disc is uniformly distributed at the bottom of the SBR pools to oxygenate the aeration, so that dissolved oxygen in the activated sludge treatment process is ensured, the bottom of the SBR pools is also provided with a transverse water distribution pipe which is vertically arranged at the water distribution pipe connection center, the top of the water inlet pipe is provided with a water outlet pipe, the water in the water distribution pipe flows into the water inlet pipe through the lift pump, and flows out the water from the water outlet pipe, and be equipped with the first triangle weir of collecting the top water all around at the top, the coagulating basin is connected to one side of triangle weir, and the opposite side of this coagulating basin is connected the one-level sedimentation tank through the water hole of crossing of middle bottom, the top of one-level sedimentation tank is equipped with second triangle weir, and second triangle weir gets into through water passageway in the second grade sedimentation tank, the second grade sedimentation tank is connected to through the weir plate filler filtering pond is equipped with filtering pond water distribution tank in this filler filtering pond, and the bottom of water distribution tank is equipped with a filtering pond treatment area, one side top of filtering pond treatment area is equipped with third triangle weir, all be equipped with the formula level gauge that soaks in equalizing basin and the SBR pond for monitoring and control liquid level.

2. The improved SBR sewage treatment device of claim 1 wherein the cross section of the SBR tank is square, the number of the water distribution pipes is four, each water distribution pipe is arranged along the diagonal direction in the tank, and the water outlets of the water distribution pipes are downward at 90 degrees to prevent the sludge blanket from being stirred when water enters.

3. The improved SBR sewage treatment device of claim 1 wherein said outlet pipe is connected to the top of an inlet pipe, and a backflow port is disposed at the middle upper part of said inlet pipe to prevent sludge in the tank from flowing back to the regulation tank.

4. The improved SBR sewage treatment device of claim 1, wherein the SBR tank is internally provided with movable and cuboid fixed packing components, the packing components are composed of fixed packing frames which are uniformly distributed, hanging ropes which are uniformly distributed are arranged in the fixed packing frames, the hanging ropes are hung on the hanging ropes, the packing components are soft combined packing, the top of each packing frame is provided with semicircular hoisting ears for facilitating hoisting, two sides of the bottom of each fixed packing frame are provided with stair-shaped fixing feet, and the fixing feet are fixed on the bottom edge of the SBR tank.

5. The improved SBR sewage treatment device of claim 1, wherein a rectangular aerator consisting of perforated aeration pipes is arranged in the coagulation basin in a hanging manner, and the aerator is supplied with air by an electromagnetic diaphragm air pump and can rapidly mix the phosphorus removal agent and the produced water by air stirring.

6. The improved SBR sewage treatment device of claim 1, wherein the bottoms of the primary sedimentation tank and the secondary sedimentation tank are both arranged into a conical sludge hopper which forms an angle of 45 degrees with the horizontal plane, the bottoms of the sludge hopper are provided with sludge discharge pipes which are connected out of the device and used for periodically discharging sludge through an electric valve or a manual butterfly valve, and the secondary sedimentation tank is provided with a detachable inclined plate or an inclined pipe, so that the sedimentation effect can be improved.

7. The improved SBR sewage treatment device of claim 1, wherein the filler filter tank is used for treating the effluent by bottom water inflow and upflow, the bottom of the filter tank treatment zone is respectively provided with a bottom stainless steel clapboard, a filler bearing layer, filler/filter material and a top stainless steel clapboard from bottom to top, a rectangular aerator consisting of perforated aeration pipes is arranged between the bottom stainless steel clapboard and the filler bearing layer, the aeration pipes on the tank wall are connected into the aerator through an electromagnetic diaphragm air pump for air supply, the filler/filter material in the filter tank is periodically subjected to air backwashing, and the bottom of the filler filter tank is provided with a backwashing drainage pump for periodically backwashing.

8. The improved SBR sewage treatment device as claimed in claim 7, wherein the filler in the filler filter tank is filled into a filter material container processed by a stainless steel perforated plate, semicircular hoisting lugs for facilitating hoisting are arranged on two sides of the top of the filter material container, so that manual and convenient replacement of the filter material can be realized, the filler can be replaced into a sand filter tank using quartz sand, an activated carbon filter tank using activated carbon, an aeration biological filter tank using volcanic rock filter material, a denitrification filter tank, and an autotrophic denitrification filter tank using sulfur composite filter material.