Sewage treatment device

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment device which comprises a sewage pool, the sewage pool is communicated with a settling tank, a clear water section and a sewage section of the settling tank are isolated through a filter, the filter comprises a filter screen layer and a ceramic filter element layer, the clear water section is provided with an overflow port and a backwashing port, and the overflow port is communicated with a water inlet of the clear water pool. A vertical flow sewage cylinder is arranged in the center of the sewage section, one end of a water inlet pipeline is communicated with a water inlet of the settling tank, the other end of the water inlet pipeline extends into the upper end of the vertical flow sewage cylinder, an umbrella-shaped water distributor is arranged below an opening in the lower end of the vertical flow sewage cylinder, and the upper surface of the umbrella-shaped water distributor is a stainless steel plate. And polystyrene particles are filled between the stainless steel plate and the stainless steel mesh. According to the settling tank, the problem of blockage of the filter screen layer is effectively avoided, and the filtering effect is improved, so that the settling efficiency of the settling tank is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely relates to a sewage treatment device. BACKGROUND

[0002] Flocculation sedimentation treatment refers to the water treatment process that the suspended solids and colloidal particles in sewage are caused to coagulate and settle under the interaction of molecular force by adding flocculants, and is a common sewage treatment method. After the sewage is mixed with the flocculants, the sewage enters the sedimentation tank from the water inlet arranged in the middle or lower part of the tank body, and then overflows from the water outlet arranged in the upper part of the tank body, and a filter screen is arranged in the tank body between the water inlet and the water outlet to block the flocculants in the sewage from being discharged from the water outlet. It can be seen that the sedimentation mode of the sedimentation tank mainly depends on the self-settlement of the flocculants and the filtering effect of the filter screen, and when the filter screen is used for a long time and is blocked, the sedimentation tank is difficult to maintain normal operation, and the sedimentation efficiency will be obviously affected.

[0003] On the other hand, the filter screen inside the sedimentation tank is usually made of stainless steel, and usually only one layer of filter screen is arranged, so the filtering effect is relatively limited and the small particles in the sewage cannot be removed well.

[0004] Therefore, the existing sewage treatment device using the flocculation sedimentation treatment method often has the problems of limited sedimentation efficiency and filtering capacity, and it is necessary to provide a sewage treatment device that can further improve the flocculation sedimentation treatment efficiency and effect of sewage. UTILITY MODEL CONTENT

[0005] In view of the technical problems of limited sedimentation efficiency and filtering capacity of the existing flocculation sedimentation device, the utility model provides a sewage treatment device, which sets a double-layer filter, a backwashing pipeline and an improved umbrella-shaped water distributor structure, effectively avoids the blockage problem of the filter screen layer, improves the filtering effect, and improves the sedimentation efficiency of the sedimentation tank.

[0006] The technical scheme of the utility model is as follows:

[0007] The sewage treatment device comprises a sewage pool, a water outlet of the sewage pool is connected with a water inlet of a sedimentation tank through a pipeline, the sedimentation tank comprises a clear water section, a sewage section and a flocculation section from top to bottom, the clear water section and the sewage section are separated by a filter, the filter comprises a filter screen layer and a ceramic filter core layer, the filter screen layer is arranged below the ceramic filter core layer, the filtering precision of the filter screen layer is lower than that of the ceramic filter core layer, the clear water section is provided with an overflow port and a backwashing port, the overflow port is connected with a water inlet of a clear water pool through a pipeline, a water outlet of the clear water pool is connected with the backwashing port through a pipeline, the backwashing port is arranged between the filter screen layer and the ceramic filter core layer, the sewage section is provided with a vertical flow sewage cylinder with a closed upper end and an open lower end, one end of the water inlet pipeline is connected with the water inlet of the sedimentation tank, and the other end of the water inlet pipeline extends into the upper end of the vertical flow sewage cylinder, an umbrella-shaped water distributor is arranged below the open lower end of the vertical flow sewage cylinder, the upper surface of the umbrella-shaped water distributor is a stainless steel plate, the lower surface of the umbrella-shaped water distributor is a stainless steel mesh, polystyrene particles are filled between the stainless steel plate and the stainless steel mesh, and the flocculation section is a conical structure arranged at the bottom of the sedimentation tank.

[0008] Further, the sewage pool is designed to be open, and the outlet ends of PAC (polyaluminum chloride) feeding channels and PAM (polyacrylamide) feeding channels are arranged above the pool opening of the sewage pool.

[0009] Further, the sewage pool is internally provided with a stirring paddle, sewage and PAC and PAM are fully mixed through the stirring action of the stirring paddle, so that the sewage forms better flocculation bodies.

[0010] Further, the bottom of the flocculation section is provided with a flocculation outlet.

[0011] Further, the clear water section, the sewage section and the flocculation section are respectively provided with observation ports.

[0012] Further, a backwashing pipeline is arranged between the filter screen layer and the ceramic filter core layer, one end of the backwashing pipeline is connected with the backwashing port, and the other end of the backwashing pipeline is closed, a row of backwashing spray ports are arranged along the axial direction of the backwashing pipeline, and the water outlet direction of the backwashing spray ports is towards the filter screen layer.

[0013] The beneficial effects of the utility model lie in:

[0014] The utility model discloses a filter screen layer and ceramic filter core layer of different filtering accuracy are set up, realize the double filtration to the undeposited flocculating material in overflow sewage, set up backwash mouth, utilize the clean water of the settlement tank processing to flush the filter screen layer of the easy blockage in practice, solve the problem of slow filtering speed and filter screen layer invalidation caused by filter screen layer blockage, improve the structure of umbrella water distributor, replace the single layer stainless steel plate with the composite structure of upper surface stainless steel plate, lower surface stainless steel net and middle polystyrene adsorption particle filling, on the one hand, retain its flow guide effect to sewage, on the other hand, can pre-adsorb the flocculating material not deposited to flocculating section, thereby reduce the filtering pressure of subsequent filter. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to make the technical scheme of the utility model more clear, the following will briefly introduce the drawings needed to be used in the description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0016] Figure 1 It is the structure schematic view of the sewage treatment device of the utility model embodiment 1.

[0017] Figure 2 It is the cross section schematic view of umbrella water distributor in the utility model embodiment 1.

[0018] In the drawing, 1 is sewage pool, 2 is PAC feed channel, 3 is PAM feed channel, 4 is clean water section, 5 is sewage section, 6 is flocculating section, 7 is filter screen layer, 8 is ceramic filter core layer, 9 is clean water pool, 10 is backwash pipeline, 11 is vertical flow sewage cylinder, 12 is water inlet pipeline, 13 is umbrella water distributor, 14 is stainless steel plate, 15 is stainless steel net, 16 is polystyrene particle. DETAILED DESCRIPTION

[0019] In order to make the purpose, feature, advantage of the utility model more obvious and easy to understand, the following will combine the drawings in the specific embodiment, and the technical scheme in the utility model is described clearly and completely, obviously, the following described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the patent, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the patent protection.

[0020] Embodiment 1

[0021] The sewage treatment device comprises a sewage pool 1, the sewage pool 1 is designed as an open type, the outlet ends of a PAC feeding channel 2 and a PAM feeding channel 3 are arranged above the pool opening of the sewage pool 1 respectively, a stirring paddle is arranged in the sewage pool 1, and the water outlet of the sewage pool 1 is connected with the water inlet of a sedimentation tank through a pipeline;

[0022] The sedimentation tank comprises a clear water section 4, a sewage section 5 and a flocculation section 6 from top to bottom, and observation openings are arranged on the clear water section 4, the sewage section 5 and the flocculation section 6 respectively;

[0023] The clear water section 4 and the sewage section 5 are isolated by a filter, the filter comprises a filter screen layer 7 and a ceramic filter core layer 8, the filter screen layer 7 is arranged below the ceramic filter core layer 8, the filtering precision of the filter screen layer 7 is lower than that of the ceramic filter core layer 8, the filtering precision of the filter screen layer 7 refers to the pore diameter of the filter screen used by the filter screen layer 7, the filtering precision of the ceramic filter core layer 8 refers to the pore diameter of the ceramic filter core used by the ceramic filter core layer 8, that is, the particle size of the flocculation material that can be filtered by the ceramic filter core layer 8 is smaller than that of the flocculation material that can be filtered by the filter screen, so that the small flocculation material that passes through the filter screen layer 7 is further adsorbed;

[0024] The clear water section 4 is provided with an overflow opening and a backwashing opening, the overflow opening is connected with the water inlet of a clear water pool 9 through a pipeline, the water outlet of the clear water pool 9 is connected with the backwashing opening through a pipeline, the backwashing opening is arranged between the filter screen layer 7 and the ceramic filter core layer 8, a backwashing pipeline 10 is arranged between the filter screen layer 7 and the ceramic filter core layer 8, one end of the backwashing pipeline 10 is connected with the backwashing opening, the other end is closed, a row of backwashing spray openings are arranged along the axial direction of the backwashing pipeline 10, and the water outlet direction of the backwashing spray openings is towards the filter screen layer 7;

[0025] The water inlet of the sedimentation tank is located in the sewage section 5, a vertical flow sewage cylinder 11 with a closed upper end and an open lower end is arranged in the center of the sewage section 5, a water inlet pipeline 12 is connected with the water inlet of the sedimentation tank at one end and extends into the upper end of the vertical flow sewage cylinder 11 at the other end, an umbrella-shaped water distributor 13 is arranged below the open lower end of the vertical flow sewage cylinder 11, the vertical flow sewage cylinder 11 and the umbrella-shaped water distributor 13 can be fixedly installed in the sedimentation tank through a support, the upper surface of the umbrella-shaped water distributor 13 is a stainless steel plate 14, the lower surface of the umbrella-shaped water distributor 13 is a stainless steel mesh 15, and polystyrene particles 16 are filled between the stainless steel plate 14 and the stainless steel mesh 15;

[0026] The flocculation section 6 is a conical structure arranged at the bottom of the sedimentation tank, and the flocculation section 6 is provided with a flocculation material outlet at the bottom.

[0027] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wastewater treatment device, comprising a wastewater tank, wherein the outlet of the wastewater tank is connected to the inlet of a settling tank via a pipe, characterized in that, The settling tank consists of a clear water section, a wastewater section, and a flocculation section from top to bottom. The clear water section and the wastewater section are separated by a filter, which includes a filter mesh layer and a ceramic filter element layer. The filter mesh layer is located below the ceramic filter element layer, and its filtration accuracy is lower than that of the ceramic filter element layer. The clear water section has an overflow port and a backwash port. The overflow port is connected to the inlet of the clear water tank through a pipe, and the outlet of the clear water tank is connected to the backwash port through a pipe. The backwash port is located between the filter mesh layer and the ceramic filter element layer. The wastewater section has a vertical wastewater cylinder with a closed top and an open bottom at the center. One end of the inlet pipe is connected to the inlet of the settling tank, and the other end extends into the upper end of the vertical wastewater cylinder. An umbrella-shaped water distributor is located below the lower opening of the vertical wastewater cylinder. The upper surface of the umbrella-shaped water distributor is a stainless steel plate, and the lower surface is a stainless steel mesh. Polystyrene particles are filled between the stainless steel plate and the stainless steel mesh. The flocculation section is a conical structure located at the bottom of the settling tank.

2. The wastewater treatment device as described in claim 1, characterized in that, The wastewater tank is designed to be open, with the outlets of the PAC feed channel and the PAM feed channel located above the opening of the wastewater tank.

3. The wastewater treatment device as described in claim 1, characterized in that, The sewage tank is equipped with a stirring paddle.

4. The wastewater treatment device as described in claim 1, characterized in that, The bottom of the flocculation section is equipped with a flocculant outlet.

5. The wastewater treatment device as described in claim 1, characterized in that, Observation ports are provided in the clear water section, the sewage section, and the flocculation section.

6. The wastewater treatment device as described in claim 1, characterized in that, A backwashing pipe is installed between the filter screen layer and the ceramic filter element layer. One end of the backwashing pipe is connected to the backwash port, and the other end is closed. A row of backwashing spray ports is installed along the axial direction of the backwashing pipe, and the water outlet of the backwashing spray ports is directed towards the filter screen layer.

Images