Sewage treatment device with multi-stage filtering function

Abstract

The utility model discloses a sewage treatment device with a multi-stage filtering function. The sewage treatment device comprises a precipitation filtering basin, a first water pump, a sterilization tank, a medicament tank, a medicament pumping device, a second water pump and a fine filtering tank, the precipitation filtering tank, the first water pump, the sterilization tank, the second water pump and the fine filtering tank are connected in sequence; the medicament tank is communicated with the sterilization tank through the medicament pumping device; sewage of surface runoff is subjected to secondary sedimentation through the sedimentation and filtration tank, sterilization in the sterilization tank and further filtration through the fine filtration tank, and reclaimed water obtained after sewage purification is stored in a tank body of the fine filtration tank; sewage is subjected to multi-stage purification of the device, and purified reclaimed water can be used for toilet flushing, vehicle flushing, greening irrigation and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment equipment, and in particular relates to a sewage treatment device with a multi-stage filtering function. Background Art

[0002] Open spaces such as city squares will generate surface runoff during the rainy season. In areas with hardened ground, surface runoff is difficult to penetrate and needs to be discharged through the municipal sewage network. However, heavy rainfall will mix with a large amount of impurities to clog the network, resulting in untimely drainage.

[0003] At present, some areas will recycle surface runoff sewage through sewage treatment plants. However, the multiple filters in the sewage treatment plants are usually set horizontally. This method has a poor filtering effect. There are still many impurities in the water. The sewage filtration treatment is poor, which affects the reuse of sewage and wastes resources. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and provide a sewage treatment device with multi-stage filtration function.

[0005] A sewage treatment device with multi-stage filtration function comprises: a sedimentation and filtration tank, a first water pump, a sterilization tank, a chemical tank, a chemical pump, a second water pump, and a fine filter tank; the sedimentation and filtration tank, the first water pump, the sterilization tank, the second water pump, and the fine filter tank are connected in sequence, and the chemical tank is connected to the sterilization tank via the chemical pump; surface runoff sewage is secondary precipitated in the sedimentation and filtration tank, sterilized in the sterilization tank, and further filtered in the fine filter tank, and the regenerated water after sewage purification is stored in the tank body of the fine filter tank.

[0006] The sedimentation and filtration tank is provided with a partition, which divides the sedimentation and filtration tank into a first sedimentation chamber and a second sedimentation chamber; a liquid collecting pipe and a water outlet pipe are respectively provided on both sides of the sedimentation and filtration tank; a siphon is provided on the partition; a discharge pipe is provided below the liquid collecting pipe; a discharge valve is provided on the discharge pipe; surface runoff sewage is precipitated in the first sedimentation chamber and then flows into the second sedimentation chamber through the siphon.

[0007] The lower ends of the first sedimentation chamber and the second sedimentation chamber are both provided with a slag collecting trough; a slag trough door is provided on one side of the slag collecting trough; the slag collecting trough is arranged at the lowest point of the liquid level in the sedimentation and filtration tank.

[0008] The sterilization tank includes: a sterilization tank body, a sterilization tank bracket, a sterilization tank cover, a stirring rod, and a stirring rod driving motor; a sterilization tank liquid inlet pipe and a sterilization tank liquid outlet pipe are respectively provided on one side of both sides of the sterilization tank body; the outlet pipe is connected to the sterilization tank liquid inlet pipe through a first water pump; the sterilization tank body is fixed on the sterilization tank bracket; the sterilization tank cover is flange-connected to the top of the sterilization tank body; the stirring rod shaft is connected to the sterilization tank body; the stirring rod driving motor is arranged at the bottom of the sterilization tank body shell; the stirring rod is driven to rotate by the stirring rod driving motor.

[0009] The medicine tank is connected with the medicine injection nozzle pipeline through the medicine pump; the medicine tank stores anaerobic sterilization solvent, and the anaerobic sterilization solvent is injected into the sterilization tank body through the medicine pump.

[0010] The anaerobic sterilization solvent is hydrogen peroxide or sodium hypochlorite solvent.

[0011] The fine filter tank includes: a fine filter tank body, a fine filter tank bracket, a fine filter tank cover, a fine filter element, a filter element cover, and a spring; the fine filter tank body is fixed on the fine filter tank bracket; the fine filter tank cover is flange-connected to the fine filter tank body; a fine filter tank water inlet pipe is provided below the fine filter tank body; a fine filter tank water outlet pipe is provided on the side wall of the fine filter tank body; a fine filter tank water inlet is provided at the bottom inner side of the fine filter tank body, and the fine filter tank water inlet is connected to the fine filter tank water inlet pipe; the lower end of the fine filter element is connected to the fine filter tank water inlet stop; the filter element cover is fixed to the top of the fine filter element; the inner diameter of the lower end of the fine filter element housing is provided with a filter element water inlet hole; a filter core material is provided between the filter element water inlet hole and the filter element cover; a number of filter element water outlets are provided on the side of the filter element cover; the spring is resting between the top of the fine filter element and the inner side of the fine filter tank cover.

[0012] The filter core material comprises: PP filter cotton, activated carbon particles, and water filter ceramic particles; the PP filter cotton, activated carbon particles, and water filter ceramic particles are stacked in sequence from bottom to top in the fine filter core housing.

[0013] The present technical solution provides a sewage treatment device with a multi-stage filtration function, which includes: a sedimentation and filtration tank, a first water pump, a sterilization tank, a medicine tank, a medicine pump, a second water pump, and a fine filter tank; the sedimentation and filtration tank, the first water pump, the sterilization tank, the second water pump and the fine filter tank are connected in sequence, and the medicine tank is connected to the sterilization tank through the medicine pump; the surface runoff sewage is secondary precipitated in the sedimentation and filtration tank, sterilized in the sterilization tank and further filtered in the fine filter tank, and the sewage undergoes multi-stage purification of the device, and the purified recycled water is stored in the tank body of the fine filter tank; the purified recycled water can be used for toilet flushing, vehicle flushing and green irrigation, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall schematic diagram of a sewage treatment device with multi-stage filtration function of the utility model;

[0015] Figure 2 This is a partial cross-sectional view of a sedimentation and filtration tank of a sewage treatment device with a multi-stage filtration function according to the present invention;

[0016] Figure 3 This is a partial cross-sectional view of a sterilization tank of a sewage treatment device with multi-stage filtration function according to the present invention;

[0017] Figure 4 This is a partial cross-sectional view of a fine filter tank of a sewage treatment device with multi-stage filtration function according to the present invention;

[0018] Figure 5 This is a cross-sectional view of the structure of a fine filter element of a sewage treatment device with multi-stage filtration function in the utility model;

[0019] In the figure: 1, sedimentation and filtration tank; 11, partition; 12, first sedimentation chamber; 13, second sedimentation chamber; 141, first slag collecting tank; 142, first slag collecting tank door; 143, second slag collecting tank; 144, second slag collecting tank door; 15, liquid collecting pipe; 16, discharge pipe; 161, discharge valve; 17, siphon; 18, water outlet pipe; 19, filter tank cover; 191, sealing notch; 2, first water pump; 3, sterilization tank; 31, sterilization tank body; 311, sterilization tank liquid inlet pipe; 312, sterilization tank liquid outlet pipe; 3121, water diversion pipe; 32, sterilization tank bracket; 33, sterilization Bacteria tank cover; 331, drug injection nozzle; 332, first pressure relief valve; 34, stirring rod; 35, stirring rod drive motor; 4, medicine tank; 5, drug pump; 6, second water pump; 7, fine filter tank; 71, fine filter tank body; 711, fine filter tank water inlet pipe; 712, fine filter tank water outlet pipe; 713, filter element docking concave stopper; 72, fine filter tank bracket; 73, fine filter tank cover; 74, fine filter element; 741, docking convex stopper; 742, filter element water inlet hole; 743, PP filter cotton; 744, activated carbon granules; 745, water filtration ceramic granules; 75, filter element cover; 76, spring. DETAILED DESCRIPTION

[0020] The technical solution will be further clearly and completely described below in conjunction with the accompanying drawings of the technical solution. The described embodiments are only a part of the technical solution, not all embodiments. Based on the technical solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this utility model. Example

[0021] See also Figures 1 to 5 As shown, a sewage treatment device with multi-stage filtration function includes: a sedimentation and filtration tank 1, a first water pump 2, a sterilization tank 3, a medicine tank 4, a medicine pump 5, a second water pump 6, and a fine filter tank 7;

[0022] The sedimentation and filtration tank 1 , the first water pump 2 , the sterilization tank 3 , the second water pump 6 and the fine filtration tank 7 are connected in sequence, and the medicine tank 4 is connected to the sterilization tank 3 through the medicine pump 5 .

[0023] The sedimentation and filtration tank 1 is provided with a partition 11, which divides the sedimentation and filtration tank 1 into a first sedimentation chamber 12 and a second sedimentation chamber 13;

[0024] The sedimentation and filtration tank 1 is provided with slag collecting troughs on both sides of the lower end; the slag collecting troughs are divided into a first slag collecting trough 141 and a second slag collecting trough 143; the first slag collecting trough 141 is provided at the lowest point of the liquid level in the first sedimentation chamber 12; the second slag collecting trough 143 is provided at the lowest point of the liquid level in the second sedimentation chamber 13; a first slag trough door 142 is provided on one side of the first slag collecting trough 141; a second slag trough door 144 is provided on one side of the second slag collecting trough 143;

[0025] The sedimentation and filtration tank 1 is further provided with: a liquid collecting pipe 15, a drainage pipe 16, a siphon pipe 17, a water outlet pipe 18, and a filter tank cover 19; the liquid collecting pipe 15 is provided at the upper end of one side of the sedimentation and filtration tank 1; the drainage pipe 16 is provided below the liquid collecting pipe 15; the siphon pipe 17 is provided on the partition 11;

[0026] The drain pipe 16 is provided with a drain valve 161; the drain valve 161 is connected to the end flange of the drain pipe 16;

[0027] The siphon 17 is an N-shaped tube, and the highest liquid point of the siphon 17 is lower than the height of the liquid inlet of the collecting pipe 15; the siphon water inlet 171 at one end of the siphon 17 is in the middle of the first sedimentation chamber 12; the siphon water inlet 171 is provided with a filter 172; the siphon water outlet 173 at the other end of the siphon 17 is below the second sedimentation chamber 13;

[0028] The height of the siphon pipe water outlet 173 is lower than the height of the siphon pipe water inlet 171;

[0029] The outlet pipe 18 is provided above the inner wall of the sedimentation and filtration tank 1; one end of the outlet pipe 18 is provided with an outlet pipe water inlet 181, and the outlet pipe water inlet 181 is provided in the middle of the second sedimentation chamber 13;

[0030] A sealing notch 191 is provided below the filter pool cover 19 ; the filter pool cover 19 is fixed to the top of the sedimentation filter pool 1 ; the sealing notch 191 is butted against the edge of the upper end of the sedimentation filter pool 1 .

[0031] The sterilization tank 3 includes: a sterilization tank body 31, a sterilization tank bracket 32, a sterilization tank cover 33, a stirring rod 34, and a stirring rod driving motor 35;

[0032] The sterilization tank body 31 is fixed on the sterilization tank bracket 32; the sterilization tank cover 33 is connected to the top flange of the sterilization tank body 31; the stirring rod 34 is axially connected to the sterilization tank body 31; the stirring rod drive motor 35 is provided at the bottom of the outer shell of the sterilization tank body 31; the stirring rod 34 is driven to rotate by the stirring rod drive motor 35;

[0033] A sterilizing tank liquid inlet pipe 311 is provided on one side of the sterilizing tank body 31, and the water outlet pipe 18 is connected to the sterilizing tank liquid inlet pipe 311 through the first water pump 2; a sterilizing tank liquid outlet pipe 312 is provided on the other side of the sterilizing tank body 31; the sterilizing tank liquid inlet pipe 311 is located at the upper end of the inner side of the sterilizing tank body 31; a water inlet pipe 3121 is provided at one end of the sterilizing tank liquid outlet pipe 312; the water inlet pipe 3121 is located at the lower inner side of the sterilizing tank body 31;

[0034] The sterilization tank cover 33 is provided with a drug injection nozzle 331 and a first pressure relief valve 332 ; the drug injection nozzle 331 is located in the middle of the sterilization tank cover 33 ; the first pressure relief valve 332 is located on one side of the drug injection nozzle 331 .

[0035] The medicine tank 4 is connected to the medicine injection nozzle 331 through the medicine pump 5; the medicine tank 4 stores the anaerobic sterilization solvent;

[0036] The pump 5 is a peristaltic pump, and the medicine tank 4 injects the anaerobic sterilization solvent into the sterilization tank body 31 through the pump 5; the stirring rod 34 increases the fusion degree of the anaerobic sterilization solvent and the sewage;

[0037] The anaerobic sterilization solvent is hydrogen peroxide or sodium hypochlorite solvent.

[0038] The fine filter tank 7 includes: a fine filter tank body 71, a fine filter tank bracket 72, a fine filter tank cover 73, a fine filter element 74, a filter element cover 75, and a spring 76;

[0039] The fine filter tank body 71 is fixed on the fine filter tank bracket 72; the fine filter tank cover 73 is flange-connected to the fine filter tank body 71; the top of the fine filter element 74 is provided with an internal thread, and the lower part of the filter cover 75 is provided with an external thread, and the lower end of the filter cover 75 is threadedly locked and fixed to the top of the fine filter element 74; the spring 76 is pressed between the top of the fine filter element 74 and the inner side of the fine filter tank cover 73;

[0040] A fine filter tank water inlet pipe 711 is provided below the fine filter tank body 71; a fine filter tank water outlet pipe 712 is provided on the side wall of the fine filter tank body 71; a fine filter tank water inlet is provided at the inner bottom of the fine filter tank body 71, and the fine filter tank water inlet is connected to the fine filter tank water inlet pipe 711; a filter element docking concave stop 713 is provided at the fine filter tank water inlet; the filter element docking concave stop 713 is annular; a docking convex stop 741 is provided on the outer diameter of the lower end of the fine filter element 74 housing; the filter element docking concave stop 713 is sealed with the docking convex stop 741;

[0041] The inner diameter of the lower end of the housing of the fine filter element 74 is provided with a filter element water inlet hole 742, and a filter core material is provided between the filter element water inlet hole 742 and the filter element cover 75;

[0042] The filter core material includes: PP filter cotton 743, activated carbon particles 744, and water filter ceramic particles 755; the PP filter cotton 743, activated carbon particles 744, and water filter ceramic particles 755 are stacked in order from bottom to top in the housing of the fine filter element 74;

[0043] The filter element cover 75 has a filter element screen 751 at the lower end thereof to prevent the filter element material from overflowing; a plurality of filter element water outlets 752 are provided on the side of the filter element cover 75; a spring fixing groove 753 is provided at the top of the filter element cover 75; and the lower end of the spring 76 is fixed in the spring fixing groove 753;

[0044] The lower end of the fine filter element 74 is fixed at the water inlet of the fine filter tank; the filter element cover 75 filters and purifies the sterilized sewage through PP filter cotton 743, activated carbon particles 744 and water filtering ceramic particles 755 step by step, and the recycled water after sewage purification is stored in the fine filter tank body 71.

[0045] Working principle:

[0046] Surface runoff is introduced into the first sedimentation chamber 12 of the sedimentation and filtration tank 1 through the collecting pipe 15; the sewage is precipitated in the first sedimentation chamber 12; when the sewage in the first sedimentation chamber 12 reaches the sewage interface, the precipitated sewage is introduced into the second sedimentation chamber 13 through the siphon 17 for further precipitation; the sediment in the first sedimentation chamber 12 can be discharged from one side of the first slag collecting tank 141; the sediment in the second sedimentation chamber 13 can be discharged from one side of the second slag collecting tank 143; the sewage in the second sedimentation chamber 13 is pumped into the sterilization tank 3 by the first water pump 2, where the sewage is sterilized with an anaerobic sterilization solvent; the sterilized sewage is pumped into the fine filter tank 7 by the second water pump 6; the water inlet of the fine filter tank 7 is provided with a fine filter element 74; driven by the second water pump 6, the sterilized sewage is filtered step by step through the PP filter cotton 743, activated carbon particles 744 and water filtering ceramic particles 755 in the fine filter element 74; the recycled water after sewage purification is stored in the fine filter tank body 71 for wide reuse.

Claims

1. A sewage treatment device with multi-stage filtration function, comprising: Sedimentation and filtration tank (1), first water pump (2), sterilization tank (3), medicine tank (4), medicine pump (5), second water pump (6), fine filter tank (7); characterized in that: the sedimentation and filtration tank (1), first water pump (2), sterilization tank (3), second water pump (6) and fine filter tank (7) are connected in sequence, and the medicine tank (4) is connected to the sterilization tank (3) through the medicine pump (5); the surface runoff sewage is secondary precipitated through the sedimentation and filtration tank (1), sterilized in the sterilization tank (3) and further filtered in the fine filter tank (7), and the regenerated water after sewage purification is stored in the fine filter tank body (71).

2. The sewage treatment device with multi-stage filtration function according to claim 1, characterized in that: The sedimentation and filtration tank (1) is provided with a partition (11), which divides the sedimentation and filtration tank (1) into a first sedimentation chamber (12) and a second sedimentation chamber (13); a liquid collecting pipe (15) and a water outlet pipe (18) are respectively provided on both sides of the sedimentation and filtration tank (1); a siphon (17) is provided on the partition (11); a discharge pipe (16) is provided below the liquid collecting pipe (15); a discharge valve (161) is provided on the discharge pipe (16); surface runoff sewage is precipitated in the first sedimentation chamber (12) and then flows into the second sedimentation chamber (13) through the siphon (17).

3. The sewage treatment device with multi-stage filtration function according to claim 2, characterized in that: A slag collecting trough is provided at the lower end of each of the first sedimentation chamber (12) and the second sedimentation chamber (13); a slag collecting trough door is provided on one side of the slag collecting trough; and the slag collecting trough is located at the lowest point of the liquid level of the sedimentation and filtration tank (1).

4. The sewage treatment device with multi-stage filtration function according to claim 3, characterized in that: The sterilizing tank (3) comprises: a sterilizing tank body (31), a sterilizing tank bracket (32), a sterilizing tank cover (33), a stirring rod (34), and a stirring rod driving motor (35); a sterilizing tank liquid inlet pipe (311) and a sterilizing tank liquid outlet pipe (312) are respectively provided on one side of both sides of the sterilizing tank body (31); the outlet pipe (18) is connected to the sterilizing tank liquid inlet pipe (311) through a first water pump (2); the sterilizing tank body (31) is fixed on the sterilizing tank bracket (32); the sterilizing tank cover (33) is flange-connected to the top of the sterilizing tank body (31); the stirring rod (34) is axially connected to the sterilizing tank body (31); the stirring rod driving motor (35) is provided at the bottom of the outer shell of the sterilizing tank body (31); and the stirring rod (34) is driven to rotate by the stirring rod driving motor (35).

5. The sewage treatment device with multi-stage filtration function according to claim 4, characterized in that: The medicine tank (4) is connected to the medicine injection nozzle (331) through the medicine pump (5); the medicine tank (4) stores anaerobic sterilization solvent, and the anaerobic sterilization solvent is injected into the sterilization tank body (31) through the medicine pump (5).

6. The sewage treatment device with multi-stage filtration function according to claim 5, characterized in that: The anaerobic sterilization solvent is hydrogen peroxide or sodium hypochlorite solvent.

7. The sewage treatment device with multi-stage filtration function according to claim 6, characterized in that: The fine filter tank (7) comprises: a fine filter tank body (71), a fine filter tank bracket (72), a fine filter tank cover (73), a fine filter filter element (74), a filter element cover (75), and a spring (76); the fine filter tank body (71) is fixed on the fine filter tank bracket (72); the fine filter tank cover (73) is flange-connected to the fine filter tank body (71); a fine filter tank water inlet pipe (711) is provided below the fine filter tank body (71); a fine filter tank water outlet pipe (712) is provided on the side wall of the fine filter tank body (71); a fine filter tank inlet pipe (711) is provided on the inner bottom of the fine filter tank body (71). The water inlet of the fine filter tank is connected to the fine filter tank water inlet pipe (711); the lower end of the fine filter element (74) is connected to the fine filter tank water inlet stopper; the filter element cover (75) is fixed to the top of the fine filter element (74); the inner diameter of the lower end of the fine filter element (74) housing is provided with a filter element water inlet hole (742); a filter core material is provided between the filter element water inlet hole (742) and the filter element cover (75); a plurality of filter element water outlets (752) are provided on the side of the filter element cover (75); and the spring (76) is abutted between the top of the fine filter element (74) and the inner side of the fine filter tank cover (73).

8. The sewage treatment device with multi-stage filtration function according to claim 7, characterized in that: The filter core material comprises: PP filter cotton (743), activated carbon particles (744), and water filter ceramic particles (745); the PP filter cotton (743), activated carbon particles (744), and water filter ceramic particles (745) are stacked in sequence from bottom to top in the housing of the fine filter element (74).

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