CN112551812B - A water quality treatment device and water quality treatment method - Google Patents

Abstract

The invention discloses a water quality treatment device, which comprises a sewage collecting tank, a multi-stage filtering device, a sediment sedimentation tank, a hydrolysis acidification tank, a biological contact oxidation tank and a disinfection tank, wherein the sewage collecting tank is connected with the multi-stage filtering device through a pipeline; the multistage filtering device comprises a fixed seat and a plurality of layers of horizontally arranged filter screen assemblies, wherein the upper part of the fixed seat is provided with a water inlet opening, and the side part of the fixed seat is provided with a plurality of slag outlets from top to bottom; each filter screen assembly comprises a filter screen belt and a rotating roller, and the filter screen belt is wound on the rotating roller; the filter screen components are arranged at intervals from top to bottom in sequence, and the mesh number of the filter screen belts of the filter screen components from top to bottom is increased in sequence; the upper surface of each filter screen belt moves from the inner cavity of the fixed seat to the slag outlet direction; and a slag removing brush in contact with the lower surface of the filter screen belt is arranged below each slag outlet. Therefore, the filter screen assemblies in different combinations can be matched to meet different filtering requirements, and the device can keep a high-efficiency filtering state due to the self-cleaning of the filter screen.

Description

A water quality treatment device and water quality treatment method

technical field

The invention relates to the field of sewage treatment, in particular to a water quality treatment device and a water quality treatment method.

Background technique

Sewage (sewage) usually refers to certain polluted discharge water from domestic and production, which has lost its original function. It is due to the addition of new substances into the water or changes in external conditions that cause the water to deteriorate and cannot continue to maintain its original function. Sewage mainly includes domestic sewage, industrial wastewater and initial rainwater.

Due to the random discharge of urban domestic sewage into the drainage ditch, the water body is seriously polluted, the animals and plants in the water body disappear, the water body loses its purification ability, and urban water body pollution is imminent.

Most of the existing sewage treatment methods use coarse screens and fine screens to initially block the solid waste in the water body, but as the solid waste increases, the solid waste will block the screen opening, and if the workers do not clean it in time, it will cause water flow Unsmooth, affecting the progress of sewage treatment.

In view of this, the applicant conducted in-depth research on the above-mentioned defects in the prior art, and this case arose.

Contents of the invention

The main purpose of the present invention is to provide a water quality treatment device and a water quality treatment method, which has the characteristics of reducing the impact of solid waste on sewage treatment and improving the efficiency of water quality treatment.

In order to achieve the above object, the solution of the present invention is:

A water quality treatment device, which includes a sewage collection tank, a multi-stage filter device, a sedimentation tank, a hydrolysis acidification tank, a biological contact oxidation tank and a disinfection tank arranged in sequence; the sewage collection tank and the multi-stage filter device There is a water delivery pipe between the input ports;

The multi-stage filter device includes a fixed seat and filter screen assemblies arranged horizontally on several layers of the frame body, the upper part of the fixed seat has a water inlet opening, and the side part of the fixed seat is provided with several outlets from top to bottom. Slag port; each of the filter screen components includes a filter screen belt and a rotating roller, and the filter screen belt is wound on the rotating roller; the filter screen components are arranged at intervals from top to bottom, and from top to bottom The number of mesh belts of the filter screen assembly increases sequentially; the outlet of the water delivery pipe of the sewage collection tank is arranged above the uppermost filter screen assembly; each of the filter screen assemblies is suspended outside the slag outlet and The upper surface of each filter belt moves from the inner cavity of the fixed seat to the direction of the slag outlet; a slag removal brush is provided below each of the slag outlets in contact with the lower surface of the filter belt;

A water outlet is provided at the lower end of the fixing seat, and a sedimentation tank is provided below the water outlet.

Further, the slag removal brush has a brush seat fixed on the fixed seat and a brush head detachably arranged on the brush seat, and the brush seat is provided with a push-off limit seat, and the push-off limit seat The bottom of the seat is provided with a spring, and the brush head is clamped on the fixed seat, and the abutting limit seat lowers the brush head to the direction of the filter belt under the action of the spring; the brush head is provided with a T-shaped card seat, A T-shaped card slot is arranged on the brush base, and the T-shaped card seat is clamped on the T-shaped card slot.

Further, the outer wall of the fixing seat below each of the slag removal brushes is provided with a collection pool for collecting the solid waste brushed off by the corresponding slag removal brush.

Further, on the outer wall of the fixed seat below the bottommost slag removal brush, a collection pool for collecting the solid waste brushed off by the slag removal brush is provided; a detachable door panel is provided on the collection pool.

Further, the rotating roller includes a driving roller, a driven roller and two supporting rollers arranged in the middle of the filter belt, and the driving roller, the driven roller and the supporting roller are all parallel-rotating and arranged on a fixed seat; all driving rollers It is arranged on the same side; all driving rollers are provided with sprockets, and two adjacent driving rollers are connected by chains; the fixed seat is also provided with a driving motor for driving the driving rollers to rotate.

Further, all driving rollers are wound on the same chain; a tensioning sprocket is arranged between two adjacent driving rollers.

Further, a swirl device is formed at the lower end of the fixed seat, and the swirl device includes an inclined surface at the bottom of the inner cavity of the fixed seat, a swirl tube connected to the lowest point of the inclined surface, and a water tank connected to the outlet of the swirl tube; The water outlet is formed in the middle part of the lower end of the water tube; the height from the inlet to the outlet of the swirl tube decreases gradually.

Further, the inclined surface has a first inclined surface and a second inclined surface, and the swirl tube has a first swirl tube and a second swirl tube.

Further, a generator is arranged in the water outlet, and the rotating shaft of the generator is equipped with power generation blades that can be impacted by the water flow to rotate, and the generator is connected to a storage battery, and the storage battery is connected to a driving motor; the driving motor is also A controller for controlling the rotation of the drive motor is connected.

Further, a sediment discharge partition and a filter screen partition are set in the sediment settlement tank, and the water outlet of the fixed seat is located above the sediment settlement area between the sediment discharge partition and the filter screen partition; A settling tank outlet is provided on the side of the screen partition away from the sediment discharge partition; a detachable sealing plug is provided on the settling tank outlet.

A water quality treatment method, wherein, comprising the following steps:

① Sewage collection: collect sewage to the sewage collection pool through the pipe network;

②Multi-stage filtration to remove slag; use multi-stage filter device to remove slag from the sewage input from the sewage collection tank, and remove solid waste in the sewage;

③Sedimentation: Set aside the multi-stage filtered sewage; open the sealing plug after standing, and the sewage in the sedimentation tank will be discharged from the outlet of the sedimentation tank through the filter screen partition;

④ Hydrolytic acidification: inject the sewage discharged from the sedimentation tank into the hydrolytic acidification tank; through the action of facultative microorganisms, hydrolyze part of the macromolecular organic matter;

⑤ Biological oxidation treatment: inject the hydrolyzed and acidified sewage into the biological contact oxidation tank, generate microbubbles through the microporous aeration device, cultivate aerobic microorganisms, and remove most of the organic substances in the wastewater;

⑥ Disinfection and discharge, the water after biological oxidation treatment is disinfected through the disinfection tank, and discharged after being tested.

After adopting the above structure, the present invention relates to a water quality treatment device and a water quality treatment method:

1. By setting a multi-layer filter screen assembly and gradually increasing the mesh number of the filter screen from top to bottom, like this, the solid waste in the sewage that is transported from the sewage collection tank to the multi-stage filter device will be eliminated The multi-layer filter screen assembly is used for blocking, wherein the larger solid waste will be blocked on the upper layer, and the smaller solid waste will be blocked on the upper surface of the lower layer of the filter screen assembly.

2. The solid waste collected on the upper surface of the filter screen assembly is transported to the outside of the slag outlet along with the rotation of the filter screen belt on the rotating roller, and then is brushed off by the slag removal brush. The brushed solid waste can be collected separately through the collection pools corresponding to the filter screen assemblies one by one, or can be collected through a large collection pool for all the brushed solid wastes on the filter screen assemblies, and then removed together.

3. The swirl device increases the speed of the water flow from top to bottom, which is beneficial to reduce sediment deposition on the bottom of the inner cavity of the fixed seat, and at the same time, due to the increased water flow speed, it can drive the power generation blades to rotate at a high speed, and then causing the generator to generate electricity. The generated electric energy can be stored by the battery for the intermittent operation of the drive motor.

4. The driving motor drives the driving roller through a chain, thereby reducing the number of motors and making the structure of the device more compact.

Compared with the prior art, the present invention realizes the collection of solid waste such as leaves and plastic fragments on the filter screen assembly by setting a multi-stage filter screen assembly for intermittent rotation, so as to avoid causing damage to the subsequent work of sewage treatment equipment. The impact ensures the normal operation of the overall sewage treatment plant.

Description of drawings

Fig. 1 is a schematic flow diagram of a water quality treatment device according to the present invention.

Fig. 2 is a structural schematic diagram of a multi-stage filtering device in the present invention.

Fig. 3 is a cross-sectional view of a multistage filter device in the present invention.

Fig. 4 is a cross-sectional view of another viewing angle of the multi-stage filtering device in the present invention.

Fig. 5 is a schematic structural view of the slag removal brush in the present invention.

Fig. 6 is an exploded view of the slag removal brush in the present invention.

Fig. 7 is a partial view of the power output assembly of the multi-stage filter device.

Fig. 8 is a partial view of the filter screen assembly in the present invention.

Figure 9 is a schematic diagram of the installation of the tensioning sprocket.

Fig. 10 is a process diagram of a water quality treatment method in the present invention.

In the picture:

Sewage collection pool 100; hydrolytic acidification pool 200; biological contact oxidation pool 300;

Disinfection pool 400; multi-stage filter device 1; fixed seat 11;

Screen assembly 12; Chain 13; Drive motor 14;

Swirl device 15; generator 16; power generation blade 17;

Water inlet opening 111; slag outlet 112; water outlet 113; collection pool 114;

Door panel 115; inclined surface 116; swirl pipe 117; water tube 118;

Filter belt 121; Rotating roller 122; First inclined surface 1161; Second inclined surface 1162;

The first swirl tube 1171; the second swirl tube 1172; the driving roller 1221; the driven roller 1222;

Support roller 1223; Sprocket 1224; Tensioning sprocket 1225; Water pipe 2;

Slag removal brush 3; brush seat 31; brush head 32; abutting limit seat 311; spring 312;

T-shaped card slot 313; T-shaped card seat 321; sediment settlement tank 4; sediment discharge partition 41;

Screen separator 42; sedimentation tank outlet 43; sealing plug 44.

detailed description

In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.

As shown in Figures 1 to 3, it is a water quality treatment device related to the present invention, which includes a sewage collection tank 100, a multi-stage filter device 1, a sedimentation tank 4, a hydrolytic acidification tank 200, a biological Contact oxidation tank 300 and disinfection tank 400; a water delivery pipe 2 is provided between the sewage collection tank 100 and the input port of the multi-stage filter device 1; the multi-stage filter device 1 includes a fixed seat 11 and a frame Several layers of filter screen assemblies 12 are arranged horizontally, the upper part of the fixed base 11 has a water inlet opening 111, and the side part of the fixed base 11 is provided with several slag outlets 112 from top to bottom; each of the filter screens The assembly 12 includes a filter belt 121 and a rotating roller 122, the filter belt 121 is wound on the rotating roller 122; the filter assembly 12 is arranged at intervals from top to bottom, and the filter assembly is The number of meshes of the filter belt 121 of 12 increases successively; the outlet of the water delivery pipe 2 of the sewage collection tank 100 is arranged above the uppermost filter screen assembly 12; each of the filter screen assemblies 12 hangs over the slag outlet 112 and the upper surface of each filter belt 121 moves toward the slag outlet 112 from the inner cavity of the fixed seat 11; each of the slag outlets 112 is provided with a bottom contact with the lower surface of the filter belt 121 A slag removal brush 3 ; a water outlet 113 is provided at the lower end of the fixed seat 11 , and a sediment settlement tank 4 is provided below the water outlet 113 .

By arranging a multi-layer filter screen assembly 12 and gradually increasing the mesh number of the filter screen from top to bottom, like this, the solid waste in the sewage that is transported to the multi-stage filter device 1 from the sewage collection tank 100 will be reduced Blocked by the multi-layer filter screen assembly 12, wherein the larger solid waste will be blocked on the upper layer, and the smaller solid waste will be blocked on the upper surface of the filter screen assembly 12 of the lower layer. Moreover, with the rotation of the filter screen, the filter residue filtered out from each layer will be transported to the slag outlet 112 and poured out, and the dirt adhered to the surface of the filter screen will be brushed out by the slag removal brush 3. Therefore, multi-stage filtration Device 1 has a higher efficiency.

Preferably, as shown in Figure 5 and Figure 6, the slag removal brush 3 has a brush seat 31 fixed on the fixed seat 11 and a brush head 32 detachably arranged on the brush seat 31, the brush seat 31 is provided with a top limit seat 311, the bottom of the top limit seat 311 is provided with a spring 312, the brush head 32 is clamped on the fixed seat 11, and the top limit seat 311 acts on the The lower brush head 32 pushes against the screen belt 121 direction; the brush head 32 is provided with a T-shaped card seat 321, and the brush seat 31 is provided with a T-shaped card slot 313, and the T-shaped card seat 321 is stuck on the on the T-shaped slot 313 . By setting the detachable slag brush, the loss of the filter belt 121 can be effectively reduced, and the efficiency of the filter belt 121 will not be reduced due to being blocked as time goes on. At the same time, the detachable setting is also convenient for the operator to install and maintain.

Preferably, a collection pool 114 for collecting the solid waste brushed off by the corresponding slag removal brush 3 is provided on the outer wall of the fixing seat 11 below each slag removal brush 3 . On the outer wall of the fixed seat 11 below the lowermost slag removal brush 3, a collection pool 114 for collecting the solid waste brushed off by the slag removal brush 3 is provided; a detachable door panel 115 is provided on the collection pool 114. The solid waste collected on the upper surface of the filter screen assembly 12 is conveyed to the outside of the slag outlet 112 along with the rotation of the filter screen belt 121 on the rotating roller 122 and then is brushed off by the slag removal brush 3 . The brushed solid waste can be collected separately through the collection pool 114 corresponding to the filter screen assembly 12 one by one, and can also be collected through a large collection pool 114 to collect the brushed solid waste on all the filter screen assemblies 12, and then removed at the same time. .

Preferably, the rotating roller 122 includes a driving roller 1221, a driven roller 1222 and two supporting rollers 1223 arranged in the middle of the filter belt 121, and the driving roller 1221, the driven roller 1222 and the supporting roller 1223 are all arranged to rotate in parallel On the fixed seat 11; all driving rollers 1221 are arranged on the same side; all driving rollers 1221 are provided with a sprocket 1224, and two adjacent driving rollers 1221 are connected by a chain 13; The driving motor 14 used to drive the driving roller 1221 to rotate. The driving motor 14 drives the driving roller 1221 through the chain 13, thereby reducing the number of motors and making the structure of the device more compact.

Preferably, as shown in FIG. 9 , all driving rollers 1221 are wound on the same chain 13 ; a tensioning sprocket 1225 is arranged between two adjacent driving rollers 1221 . Make the installation of chain 13 more convenient.

Preferably, a swirl device 15 is formed at the lower end of the fixed seat 11, and the swirl device 15 includes an inclined surface 116 for setting the inner cavity bottom of the fixed seat 11, a swirl tube 117 communicating with the lowest point of the inclined surface 116, and a swirl tube 117 connected to the bottom of the inner cavity of the fixed seat 11. The outlet of the flow pipe 117 communicates with the lower water cylinder 118; the water outlet 113 is formed in the middle of the lower end of the lower water cylinder 118; the height from the inlet to the outlet of the swirl pipe 117 gradually decreases. The inclined surface 116 has a first inclined surface 1161 and a second inclined surface 1162 , and the swirl tube 117 has a first swirl tube 1171 a swirl tube 117 and a second swirl tube 1172 a swirl tube 117 . The swirl device 15 increases the speed of the water flow from top to bottom, which is beneficial to reduce sediment deposition on the bottom of the inner cavity of the fixing seat 11 . The inclined surface 116 at the bottom of the inner cavity of the fixing seat 11 can prevent dirt accumulation and bacterial growth caused by long-term water accumulation at the bottom.

Preferably, the water outlet 113 is provided with a generator 16, the rotating shaft of the generator 16 is equipped with power generation blades 17 that can be impacted by the water flow and rotated, the generator 16 is connected to a storage battery, and the storage battery is connected to the driving motor. 14 is connected; the drive motor 14 is also connected with a controller for controlling the rotation of the drive motor 14. At the same time, due to the increase of water flow velocity, it can drive the power generating blades 17 to rotate at a high speed, and then make the generator 16 generate power. The generated electric energy can be stored by the battery for the intermittent operation of the drive motor 14 . The power generation device can convert a part of the kinetic energy of the water into electric energy and store it in the storage battery; when needed, it can provide electric energy for driving the motor 14, so it is more energy-saving and environmentally friendly.

Preferably, the sedimentation tank 4 is provided with a sediment discharge partition 41 and a filter screen partition 42, and the water outlet 113 of the fixed seat 11 is located between the sediment discharge partition 41 and the filter screen partition 42. Above the sedimentation area; the side of the filter screen partition 42 facing away from the sediment discharge partition 41 is provided with a settling tank outlet 43 ; a detachable sealing plug 44 is set on the settling tank outlet 43 .

A water quality treatment method, wherein, comprising the following steps:

① Sewage collection: collect the sewage to the sewage collection pool 100 through the pipe network;

②Multi-stage filtration for deslagging; adopt multi-stage filtration device 1 to remove slag from the sewage input from the sewage collection tank 100, and remove solid waste in the sewage;

3. Sediment settlement; the sewage after the multi-stage filtration is left still; after standing, the sealing plug 44 is opened, and the sewage of the sediment settlement tank 4 is discharged from the settlement tank outlet 43 through the filter screen partition 42;

④ Hydrolytic acidification: inject the sewage discharged from the sedimentation tank 4 into the hydrolytic acidification tank 200; hydrolyze part of the macromolecular organic matter through the action of facultative microorganisms;

⑤Biological oxidation treatment: inject the hydrolyzed and acidified sewage into the biological contact oxidation tank 300, generate microbubbles through the microporous aeration device, cultivate aerobic microorganisms, and remove most of the organic substances in the wastewater;

⑥ Disinfection and discharge, the water after biological oxidation treatment is disinfected through the disinfection tank 400, and discharged after being tested.

Compared with the prior art, the present invention realizes that the solid waste such as leaves and plastic fragments on the filter screen assembly 12 can be collected by setting the multi-stage filter screen assembly 12 for intermittent rotation, so as to avoid damage to the subsequent sewage treatment equipment. The work has affected the normal operation of the overall sewage treatment plant.

The above-mentioned embodiments and drawings do not limit the form and style of the product of the present invention, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims (5)

1. a water quality treatment device, it is characterized in that, comprises the sewage collection pool that is arranged successively, multi-stage filtering device, sedimentation pond, hydrolysis acidification pond, biological contact oxidation pond and disinfection pond; Described sewage collection pond and described A water delivery pipe is arranged between the input ports of the multistage filter device; The multi-stage filter device includes a fixed seat and filter screen assemblies arranged horizontally on several layers of the frame body, the upper part of the fixed seat has a water inlet opening, and the side part of the fixed seat is provided with several outlets from top to bottom. Slag port; each of the filter screen components includes a filter screen belt and a rotating roller, and the filter screen belt is wound on the rotating roller; the filter screen components are arranged at intervals from top to bottom, and from top to bottom The number of mesh belts of the filter screen assembly increases sequentially; the outlet of the water delivery pipe of the sewage collection tank is arranged above the uppermost filter screen assembly; each of the filter screen assemblies is suspended outside the slag outlet and The upper surface of each filter belt moves from the inner cavity of the fixed seat to the direction of the slag outlet; a slag removal brush is provided below each of the slag outlets in contact with the lower surface of the filter belt; A water outlet is provided at the lower end of the fixing seat, and a sedimentation tank is provided below the water outlet; A collection pool for collecting the solid waste brushed off by the slag removal brush is provided on the outer wall of the fixing seat under the lowermost slag removal brush; A detachable door panel is arranged on the collection pool; The rotating roller includes a driving roller, a driven roller and two supporting rollers arranged in the middle of the filter belt, and the driving roller, driven roller and supporting roller are all parallel-rotating and arranged on a fixed seat; all driving rollers are on the same side setting; all driving rollers are provided with sprockets, and two adjacent driving rollers are connected by chains; the fixed seat is also provided with a drive motor for driving the driving rollers to rotate; The slag removal brush has a brush seat fixed on the fixed seat and a brush head detachably arranged on the brush seat, the brush seat is provided with a top limit seat, and the bottom of the bottom limit seat is A spring is provided, and the brush head is clamped on the fixed seat, and the brush head pushes against the filter belt under the action of the spring; the brush head is provided with a T-shaped card holder, and the A T-shaped card slot is provided on the brush base, and the T-shaped card seat is clamped on the T-shaped card slot; A swirl device is formed at the lower end of the fixed seat, and the swirl device includes an inclined surface provided with the bottom of the inner cavity of the fixed seat, a swirl tube communicated with the lowest point of the inclined surface, and a drain tube communicated with the outlet of the swirl tube; The water outlet is formed in the middle of the lower end of the water tube; the height from the inlet to the outlet of the swirl tube is gradually reduced; A generator is arranged in the water outlet, and the rotating shaft of the generator is equipped with power generation blades that can be impacted by the water flow and rotates. The generator is connected to a battery, and the battery is connected to a driving motor; the driving motor is also connected to a useful A controller for controlling the rotation of the drive motor. 2. A water quality treatment device as claimed in claim 1, wherein all driving rollers are wound on the same chain; a tensioning sprocket is arranged between two adjacent driving rollers. 3. A water quality treatment device as claimed in claim 1, wherein the inclined surface has a first inclined surface and a second inclined surface, and the swirl tube has a first swirl tube and a second swirl tube Tube. 4. A kind of water quality treatment device as claimed in claim 1, it is characterized in that, in the sedimentation tank, a sediment discharge partition and a filter screen partition are arranged, and the water outlet of the fixed seat is located at the sediment discharge partition Above the sedimentation area between the screen partition and the filter screen partition; the side of the filter screen partition away from the sediment discharge partition is provided with a sedimentation tank outlet; a detachable sealing plug is provided on the sedimentation tank outlet. 5. A water quality treatment method, characterized in that, using the water quality treatment device as claimed in claim 4, further comprising the steps of: ① Sewage collection: collect sewage to the sewage collection pool through the pipe network; ②Multi-stage filtration to remove slag; use multi-stage filter device to remove slag from the sewage input from the sewage collection tank, and remove solid waste in the sewage; ③Sedimentation of sediment; the multi-stage filtered sewage is left to stand still; after standing still, the sealing plug is opened, and the sewage in the sedimentation tank is discharged from the outlet of the sedimentation tank through the filter screen partition; ④ Hydrolytic acidification: inject the sewage discharged from the sedimentation tank into the hydrolytic acidification tank; through the action of facultative microorganisms, hydrolyze part of the macromolecular organic matter; ⑤Biological oxidation treatment: inject the hydrolyzed and acidified sewage into the biological contact oxidation tank, generate microbubbles through the microporous aeration device, cultivate aerobic microorganisms, and remove most of the organic substances in the wastewater; ⑥ Disinfection and discharge, the water after biological oxidation treatment is disinfected through the disinfection tank, and discharged after being tested.

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