CN209797719U - Take sewage treatment system of fiber ball filter back flush - Google Patents

Abstract

The utility model discloses a sewage treatment system with a fiber ball filter for backwashing, which comprises a water collecting tank, a first pH adjustment tank, a flocculation reaction tank, a first sedimentation tank, a fiber ball filter, an anaerobic tank, facultative oxygen tank, aerobic tank, second sedimentation tank, MBR membrane filter tank, disinfection tank and reuse tank, an oil-water separation tank is arranged between the collection tank and the first pH adjustment tank, and the fiber ball filter includes a tank body, The upper side of the tank is provided with a water inlet, the other side is provided with a backwash sewage outlet, the top of the tank is provided with a backwash inlet pipe, and the bottom is provided with a water outlet. The bottom of the tank is provided with support legs, the upper and lower parts of the tank are respectively provided with upper and lower screen plates, between the upper and lower screen plates is a fiber ball filter material filler layer, and the fiber ball filter material filler layer is provided with fibers Ball filter. The utility model can effectively reduce the introduction of invalid sludge, improve the utilization rate of the fiber ball filter, and reduce the secondary pollution of the water body.

Description

A sewage treatment system with fiber ball filter backwashing

technical field

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment system with a fiber ball filter backwashing.

Background technique

Sewage, usually refers to the effluent from living and production that is polluted to a certain extent. The sewage mainly includes domestic sewage, industrial sewage and initial rainwater. The main pollutants in sewage are pathogen pollutants, oxygen-consuming pollutants, plant nutrients and toxic pollutants. Sewage treatment: The process of purifying sewage in order to make it meet the water quality requirements for draining a body of water or for reuse. Sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering and other fields, and is increasingly entering the daily life of ordinary people.

For the current sewage treatment, there are the following problems: 1. The efficiency of sewage treatment is low, and the treatment effect is not ideal; 2. The utilization rate of water after treatment is low; 3. During the treatment process, the filter press produces The waste water is easy to cause secondary pollution, which causes great pollution to the environment, and it is even more impossible to realize the recycling and reuse of industrial water. Therefore, in order to improve the treatment effect and further improve the existing technology, the treated sewage is For reuse, it is necessary to design a sewage treatment system with fiber ball filter backwashing.

Utility model content

The technical problem solved by the present invention is to provide a sewage treatment system with fiber ball filter backwashing to solve the above-mentioned shortcomings in the background technology.

The technical problem solved by the utility model adopts the following technical solutions to realize:

A sewage treatment system with fiber ball filter backwashing, comprising a collection tank, a first pH adjustment tank, a flocculation reaction tank, a first sedimentation tank, a fiber ball filter, an anaerobic tank, a facultative aerobic tank, an aerobic tank, The second sedimentation tank, the MBR membrane filter tank, the disinfection tank and the reuse tank, an oil-water separation tank is arranged between the collecting tank and the first pH adjustment tank, the upper part of the oil-water separation tank is provided with an inclined screen, and the upper side of the oil-water separation tank is provided with an oil-water separation tank. There is an oil discharge pipe. The inlet side of the oil-water separation tank is provided with a collection tank corresponding to the outlet of the inclined mesh. The outlet of the oil-water separation tank is connected to the inlet of the first pH adjustment tank through a pump. There is a first dosing mixer, the outlet of the first pH adjustment tank is connected with the inlet of the flocculation reaction tank, the pipeline connecting the first pH adjustment tank and the flocculation reaction tank is provided with a second dosing mixer, and the outlet of the flocculation reaction tank is provided with a second dosing mixer. It is connected with the inlet of the first sedimentation tank, the outlet of the first sedimentation tank is connected with the water inlet of the fiber ball filter through the liquid inlet pump and the liquid inlet valve, and the water outlet of the fiber ball filter is connected with the inlet of the anaerobic tank through the drain valve. Connection, the outlet of the anaerobic tank is connected with the inlet of the facultative aerobic tank, the outlet of the facultative tank is connected with the aerobic tank, there is an aeration pipe in the aerobic tank, the aeration pipe is connected with the blower, the outlet of the aerobic tank is connected with the second sedimentation tank The inlet of the pool is connected, and the outlet of the second sedimentation tank is connected with the inlet of the MBR membrane filter tank. The MBR membrane filter tank is provided with a flat membrane filter. The outlet of the MBR membrane filter tank is connected to the reuse tank through the disinfection tank. Sterilizing lamp, the fiber ball filter includes a tank body, the upper side of the tank body is provided with a water inlet, the other side is provided with a backwash sewage outlet, the top of the tank body is provided with a backwash water inlet pipe, and the bottom is provided with a water outlet , The upper side of the tank body is provided with manholes, the bottom of the tank body is provided with support legs, the upper and lower parts of the tank body are respectively provided with upper and lower mesh plates, and between the upper and lower mesh plates is a fiber ball filter material The filler layer, the fiber ball filter material is provided with fiber ball filter material in the filler layer.

Further, one end of the backwash water inlet pipe passes through the upper screen, the fiber ball filter material packing layer and the lower screen plate in sequence from top to bottom, and is connected with a water distributor. The other end of the water inlet pipe is connected, the water distributor is a circular structure, and the upper surface of the water distributor is distributed with flushing nozzles.

Further, it also includes a sludge treatment system. The sludge treatment system includes a filter press, a sludge tank, a sludge pump and a sludge main pipe, the sewage outlet of the first pH adjustment tank, the sewage outlet of the flocculation reaction tank, and the first sedimentation tank. The sewage outlet of the second sedimentation tank and the sewage outlet of the MBR membrane filter tank are respectively connected with the sludge main pipe through the sludge branch pipe and the sewage valve, and the outlet of the sludge main pipe is connected with the inlet of the sludge tank through the sludge pump. The outlet of the sludge tank is pumped to the filter press by the pump.

Further, the filtrate outlet of the filter press is connected to the inlet of the sludge tank through a pipeline.

Further, the supernatant of the sludge tank is connected to the sump through a pipeline.

The beneficial effects of the utility model are:

1. By setting the inclined net, it can play the role of preliminary interception and reduce the introduction of invalid sludge.

2. By setting the oil-water separation tank, the oil pollution can be removed and the load of subsequent pollution treatment can be reduced;

3. The second sedimentation tank of the fiber ball filter can backwash the fiber ball filter through the connection of the pipeline, the backwash pump, the backwash valve and the backwash inlet pipe, and the backwashed sewage can pass through the backwash outlet and backwash. The pipe is returned to the top of the inclined net, which saves the water source and improves the utilization rate of the fiber ball filter.

4. After the sludge in the first pH adjustment tank, the flocculation reaction tank, the first sedimentation tank, the second sedimentation tank and the MBR membrane filter tank is filtered by the filter press, the filtrate is returned to the sludge tank, and the supernatant of the sludge tank The filter cake is returned to the sump through the pipeline, and the filter cake is transported out, which reduces the secondary pollution of the water body.

Description of drawings

Fig. 1 is the structural representation of the preferred embodiment of the present utility model;

Fig. 2 is the structural representation of the fiber ball filter in the preferred embodiment of the present utility model;

In the figure, the collection tank 1, the inclined net 2, the collection tank 3, the oil-water separation tank 4, the oil discharge pipe 41, the first pH adjustment tank 5, the flocculation reaction tank 6, the first sedimentation tank 7, the fiber ball filter 8, the blower 9 , anaerobic tank 10, facultative oxygen tank 11, aerobic tank 12, second sedimentation tank 13, MBR membrane filter tank 14, disinfection tank 15, reuse tank 16, filter press 17, sludge tank 18, tank 81 , water inlet 82, water outlet 83, backwash sewage outlet 84, upper screen plate 85, lower screen plate 86, backwash water inlet pipe 87, water distributor 88, flushing nozzle 89, fiber ball filter material 90, manhole 91, support Leg 92, sewage pump 100, pump 101, sludge pump 102, liquid feed pump 103, backwash pump 104, flat membrane filter 140, first dosing mixer 200, second dosing mixer 201, blowdown valve 300 , liquid inlet valve 301, backflush valve 302, liquid discharge valve 303, liquid outlet valve 304, backwash blowdown valve 305, backwash blowdown pipe 400, backwash inlet pipe 401, and sludge manifold 500.

Detailed ways

In order to make it easy to understand the technical means, creation features, achievement goals and effects realized by the present invention, the present invention will be further described below with reference to the specific figures.

Embodiment 1, referring to a sewage treatment system with fiber ball filter backwashing shown in FIG. 1 and FIG. 2, including a water collection tank 1, a first pH adjustment tank 5, a flocculation reaction tank 6, a first sedimentation tank 7, Fiber ball filter 8, anaerobic tank 10, facultative oxygen tank 11, aerobic tank 12, second sedimentation tank 13, MBR membrane filter tank 14, disinfection tank 15 and reuse tank 16, collecting tank 1 and first pH adjustment An oil-water separation pool 4 is provided between the pools 5, the upper part of the oil-water separation pool 4 is provided with an inclined screen 2, an oil discharge pipe 41 is provided on the upper side of the oil-water separation pool 4, and a corresponding inclined screen 2 is provided on the inlet side of the oil-water separation pool 4. The outlet of the collection tank 3, the outlet of the oil-water separation tank 4 is connected to the inlet of the first pH adjustment tank 5 through the pump 101, and the first dosing mixer 200 is provided on the pipeline connecting the oil-water separation tank 4 and the first pH adjustment tank 5, The outlet of the first pH adjustment tank 5 is connected to the inlet of the flocculation reaction tank 6, the pipeline connecting the first pH adjustment tank 5 and the flocculation reaction tank 6 is provided with a second dosing mixer 201, and the outlet of the flocculation reaction tank 6 is connected to the first dosing mixer 201. The inlet of a sedimentation tank 7 is connected, the outlet of the first sedimentation tank 7 is connected with the water inlet of the fiber ball filter 8 through the liquid inlet pump 103 and the liquid inlet valve 301, and the water outlet of the fiber ball filter 8 is connected with the liquid ball filter 8 through the liquid discharge valve 303. The inlet of the anaerobic pool 10 is connected, the outlet of the anaerobic pool 10 is connected with the inlet of the facultative aerobic pool 11, the outlet of the facultative aerobic pool 11 is connected with the aerobic pool 12, and an aeration pipe is arranged in the aerobic pool 12, and the aeration pipe is connected to the aerobic pool 12. The blower 9 is connected, the outlet of the aerobic tank 12 is connected with the inlet of the second sedimentation tank 13, the outlet of the second sedimentation tank 13 is connected with the inlet of the MBR membrane filter tank 14, and the MBR membrane filter tank 14 is provided with a flat membrane filter 140, The outlet of the MBR membrane filter tank 14 is connected to the reuse water tank 16 through the disinfection tank 15. The disinfection tank 15 is provided with an ultraviolet germicidal lamp. The fiber ball filter includes a tank body 81, and the upper side of the tank body 81 is provided with a water inlet 82, the other side is provided with a backwash sewage outlet 84, the top of the tank body 81 is provided with a backwash water inlet pipe 87, the bottom is provided with a water outlet 83, the upper side of the tank body 81 is provided with a manhole 91, and the bottom of the tank body 81 is provided with a manhole 91. There are supporting legs 92, and the upper and lower parts of the tank body 81 are respectively provided with an upper screen 85 and a lower screen 86. Between the upper screen 85 and the lower screen 86 is a fiber ball filter material filler layer, and a fiber ball filter material filler layer. There is a fiber ball filter material 90 inside, and one end of the backwash water inlet pipe 87 passes through the upper screen plate 85, the fiber ball filter material packing layer and the lower screen plate 86 in sequence from top to bottom. The pipeline, the backwash pump 104, and the backwash valve 302 are connected to the other end of the backwash inlet pipe 87. The water distributor 88 is a circular structure. The upper surface of the water distributor 88 is distributed with a flushing nozzle 89, and the backwash sewage outlet 84 passes through The backwashing sewage pipe 400 and the backwashing sewage valve 305 are returned to the top of the inclined screen 2 .

Further, it also includes a sludge treatment system. The sludge treatment system includes a filter press 17, a sludge tank 18, a sludge pump 102, a sludge main pipe 500, a sewage outlet of the first pH adjustment tank 5, and a sewage discharge of the flocculation reaction tank 6. The sewage outlet, the sewage outlet of the first sedimentation tank 7, the sewage outlet of the second sedimentation tank 13 and the sewage outlet of the MBR membrane filter tank 14 are respectively connected with the sludge main pipe 500 through the sludge branch pipe and the sewage valve 300, and the outlet of the sludge main pipe 500 The sludge pump 102 is connected to the inlet of the sludge tank 18, and the outlet of the sludge tank 18 is pumped to the filter press 17 through the pump.

The sewage treatment process of the present utility model is as follows:

After passing through the grille, the sewage flows into the collecting tank 1, and the sewage is lifted to the water tank at the upper end of the inclined net 2 through the sewage pump 100, and then flows laterally to the inclined net from the water tank. Playing the role of preliminary interception, the sewage falls into the oil-water separation tank 3 through the mesh of the inclined net 2, the oil-water separation tank further separates the oil and water, and the oil is discharged to the oil-stain collection bucket through the oil discharge pipe 41 for collection, and the sewage is collected. Entering the first pH adjustment tank 5 through the pump 101 can enter the first pH adjustment tank 5 after dosing and mixing in the first dosing mixer 200, which plays the role of adjusting the pH value. The sewage enters the flocculation reaction tank 6. Coagulants (PAC, PAM) are added in the second dosing mixer 201. Under the action of the coagulants (PAC, PAM), the colloids and fine suspended solids in the sewage are agglomerated into flocs, which are separated, and then the sewage enters the first A sedimentation tank 7 sediments, and the precipitation supernatant enters the fiber ball filter 8 to remove the suspended matter in the sewage; the sewage filtered by the fiber ball filter 8 enters the anaerobic tank 10, the facultative oxygen tank 11, and the Oxygen tank 12, during which biochemical reaction can effectively denitrify, destroy organic matter structure, and achieve the purpose of reducing COD, sewage further enters second sedimentation tank 13, and the supernatant of second sedimentation tank 13 enters MBR membrane filter tank 14 for filtration , the flat membrane filter 140 can effectively intercept and filter refractory organic matter and impurities, and further purify the water quality. After passing through the MBR membrane filter tank 14, the water passes through the disinfection tank 15, and kills bacteria under the action of ultraviolet germicidal lamps. It flows into the recycling pool 16 for use. It is worth noting that the return water tank 16 is connected to the backwash inlet pipe 87 through the pipeline, the backwash pump 104 and the backwash valve 302 to backwash the fiber ball filter. During normal use, the liquid inlet pump 103 and the liquid inlet valve 301 are opened. , the backwash drain valve 305, the backwash pump 104 and the backwash valve 302 are closed; the sewage enters the tank 81 from top to bottom from the water inlet 82, and is filtered by the fiber ball filter material 90, and then discharged to the anaerobic tank 10 from the water outlet 83; During backwashing, close the liquid inlet pump 103 , the liquid inlet valve 301 and the liquid discharge valve 303 , open the backwashing sewage valve 305 , the backwash pump 104 and the backwash valve 302 , and the water in the reuse pool 16 enters through the backwash inlet pipe 401 The water distributor 88 is sprayed upward by the flushing nozzle 89 to realize backwashing. The backwashed sewage is returned to the top of the inclined net 2 through the backwashing sewage outlet 84 and the backwashing sewage pipe 400, which saves the water source; the sludge generated at each stage Both can be connected to the sludge main pipe 500 through the sludge branch pipe and the sewage valve 300. After being filtered by the filter press, the filtrate is returned to the sludge tank 18, and the supernatant of the sludge tank 18 is returned to the collection tank 1 through the pipeline. It can effectively reduce the secondary pollution of water bodies.

The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention The new model will also have various changes and improvements, which all fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. A sewage treatment system with fiber ball filter backwashing, comprising a water collection tank (1), a first pH adjustment tank (5), a flocculation reaction tank (6), a first sedimentation tank (7), a fiber ball filter (8), anaerobic tank (10), facultative oxygen tank (11), aerobic tank (12), second sedimentation tank (13), MBR membrane filter tank (14), disinfection tank (15) and reuse The water pool (16) is characterized in that an oil-water separation pool (4) is arranged between the water collecting pool (1) and the first pH adjustment pool (5), and an inclined net (2) is arranged on the upper part of the oil-water separation pool (4), An oil discharge pipe (41) is provided on the upper side of the oil-water separation tank (4), and a collection tank (3) corresponding to the outlet of the inclined screen (2) is provided on the inlet side of the oil-water separation tank (4). The outlet is connected with the inlet of the first pH adjustment tank (5) through the pump (101), and the pipeline connecting the oil-water separation tank (4) with the first pH adjustment tank (5) is provided with a first dosing mixer (200), The outlet of a pH adjustment tank (5) is connected with the inlet of the flocculation reaction tank (6), and the pipeline connecting the first pH adjustment tank (5) with the flocculation reaction tank (6) is provided with a second dosing mixer (201) , the outlet of the flocculation reaction tank (6) is connected to the inlet of the first sedimentation tank (7), and the outlet of the first sedimentation tank (7) is connected to the fiber ball filter ( 8), the water outlet of the fiber ball filter (8) is connected to the inlet of the anaerobic tank (10) through the drain valve (303), and the outlet of the anaerobic tank (10) is connected to the anaerobic tank (11) The inlet of the facultative aerobic tank (11) is connected with the aerobic tank (12), and an aeration pipe is arranged in the aerobic tank (12), and the aeration pipe is connected with the blower (9). The outlet is connected to the inlet of the second sedimentation tank (13), the outlet of the second sedimentation tank (13) is connected to the inlet of the MBR membrane filter tank (14), and the MBR membrane filter tank (14) is provided with a flat membrane filter (140) , the outlet of the MBR membrane filter tank (14) is connected to the reuse water tank (16) through the disinfection tank (15), the disinfection tank (15) is provided with an ultraviolet germicidal lamp, and the fiber ball filter includes a tank (81), A water inlet (82) is provided on one side of the upper part of the tank body (81), and a backwash sewage outlet (84) is provided on the other side. The top of the tank body (81) is provided with a backwash water inlet pipe (87), and the bottom is provided with The water outlet (83), the upper side of the tank body (81) is provided with a manhole (91), the bottom of the tank body (81) is provided with support legs (92), and the upper and lower sides of the tank body (81) are respectively provided with The upper screen plate (85) and the lower screen plate (86), between the upper screen plate (85) and the lower screen plate (86) is a fiber ball filter material filler layer, and the fiber ball filter material filler layer is provided with a fiber ball filter material (90 ), one end of the backwash water inlet pipe (87) passes through the upper screen (85), the fiber ball filter material packing layer and the lower screen (86) in sequence from top to bottom, and is connected with a water distributor (88), and the reuse pool ( 16) Through the pipeline, backwash pump (104), backwash valve (302) and backwash inlet water The other end of the pipe (87) is connected, the water distributor (88) has a circular structure, and a flushing nozzle (89) is distributed on the upper surface of the water distributor (88). 400) and the backwash drain valve (305) to return to the top of the inclined screen (2). 2. A sewage treatment system with fiber ball filter backwashing according to claim 1, characterized in that it further comprises a sludge treatment system, and the sludge treatment system comprises a filter press (17), a sludge tank ( 18), the sludge pump (102) and the sludge main pipe (500), the sewage outlet of the first pH adjustment tank (5), the sewage outlet of the flocculation reaction tank (6), the sewage outlet of the first sedimentation tank (7), The sewage outlet of the second sedimentation tank (13) and the sewage outlet of the MBR membrane filter tank (14) are respectively connected to the sludge main pipe (500) through the sludge branch pipe and the sewage discharge valve (300). The sludge pump (102) is connected to the inlet of the sludge tank (18), and the outlet of the sludge tank (18) is pumped to the filter press (17) through the pump. 3. A sewage treatment system with fiber ball filter backwashing according to claim 2, characterized in that the filtrate outlet of the filter press (17) is connected to the inlet of the sludge tank (18) through a pipeline. 4. A sewage treatment system with fiber ball filter backwashing according to claim 2, characterized in that the supernatant of the sludge tank (18) is connected to the sump (1) through a pipeline.