Tail water purification treatment system for domestic sewage treatment plant

Abstract

The utility model belongs to the field of domestic sewage treatment equipment, and particularly discloses a tail water purification treatment system of a domestic sewage treatment plant, which comprises a filter tank and a filter, the filter tank is divided into an inner tank and an outer tank, the inner tank is fixedly connected inside the outer tank, the edge of the inner tank is lower than that of the outer tank, and the bottom of the inner tank is fixedly connected with a water inlet head. The lower part of the outer tank is fixedly connected with a supporting grid, a zeolite filtering layer is stacked on the supporting grid, the bottom of the supporting grid is communicated with a first water outlet pipe, the first water outlet pipe is communicated with a filter, and the bottom of the filter is communicated with an ultraviolet water purifier. The inner pool is arranged, the pebble layer is arranged in the inner pool, the flow velocity of water can be reduced by utilizing the pebble layer, meanwhile, small pits are formed in the surfaces of pebbles, sedimentation of impurities in water can be accelerated, the outer pool is arranged, and the zeolite layer is arranged in the outer pool, so that elements such as sulfur and phosphorus in the water can be effectively absorbed and removed.

Description

Technical Field

[0001] This utility model belongs to the field of domestic sewage treatment equipment, specifically a system for purifying and treating effluent from a domestic sewage treatment plant. Background Technology

[0002] Water is a precious resource for humankind. With the development of Chinese society, the amount of domestic water consumption is increasing, resulting in a growing volume of domestic sewage. Domestic sewage typically contains many impurities, harmful substances, bacteria, viruses, and other pollutants. During the treatment process at sewage treatment plants, these are removed through filtration and aeration. However, the treated effluent still contains impurities such as sludge and bacteria. Furthermore, the sulfur and phosphorus elements in the chemicals added during the initial treatment can cause further pollution. Therefore, there is a need to develop a system specifically designed for treating the effluent from domestic sewage treatment plants. Utility Model Content

[0003] To address the above technical problems, this utility model provides a wastewater purification system for domestic sewage treatment plants.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is as follows: a wastewater treatment system for a domestic sewage treatment plant, including a filtration tank and a filter. The filtration tank is divided into an inner tank and an outer tank. The inner tank is fixedly connected to the inside of the outer tank. The edge of the inner tank is lower than the edge of the outer tank. An inlet head is fixedly connected to the bottom of the inner tank. The inlet head is connected to an inlet pipe. A pebble filter layer is provided in the inner tank. A support grid is fixedly connected to the lower part of the outer tank. A zeolite filter layer is piled on the support grid. A first outlet pipe is connected to the bottom of the support grid. The first outlet pipe is connected to the filter. A second outlet pipe is connected to the bottom of the filter. The end of the second outlet pipe is connected to an ultraviolet water purifier.

[0005] Furthermore, a water passage valve is connected to the side wall of the inner pool.

[0006] Furthermore, the water valve is a solenoid valve.

[0007] Furthermore, a first water pump is installed on the inlet pipe, a second water pump is installed on the first outlet pipe, and a third water pump is installed on the second outlet pipe.

[0008] Furthermore, the filter contains an activated carbon layer.

[0009] This utility model has the following advantages compared with the prior art:

[0010] This invention includes an inner pool with a pebble layer to reduce water flow rate, and the small pits on the pebble surface accelerate the settling of impurities in the water. An outer pool with a zeolite layer effectively absorbs sulfur, phosphorus, and other elements from the water. An activated carbon layer effectively adsorbs organic matter from the water. An ultraviolet (UV) water purifier uses ultraviolet light to kill bacteria and viruses in the water, thus maximizing the elimination of most harmful substances in the effluent. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the filter tank structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the top structure of the filter tank of this utility model.

[0014] The components are: 1. Inner pool, 2. Outer pool, 3. Pebble filter layer, 4. Zeolite filter layer, 5. Support grid, 6. Water valve, 7. Inlet pipe, 8. First water pump, 9. Inlet head, 10. First outlet pipe, 11. Second water pump, 12. Filter, 13. Activated carbon layer, 14. Third water pump, 15. Second outlet pipe, and 16. Ultraviolet water purifier. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] like Figure 1 , Figure 2 , Figure 3 The wastewater treatment system shown includes a filtration tank and a filter 12. The filtration tank is divided into an inner tank 1 and an outer tank 2. The inner tank 1 is fixedly connected to the interior of the outer tank 2. The edge of the inner tank 1 is lower than the edge of the outer tank 2. When the wastewater passes the edge of the inner tank 1, an inlet head 9 is fixedly connected to the bottom of the inner tank 1. The inlet head 9 is connected to an inlet pipe 7. The inlet pipe 7 is located at the bottom of the filtration tank and can be buried underground depending on the height of the filtration tank. A pebble filter layer 3 is provided in the inner tank 1. A support grid 5 is fixedly connected to the bottom of the outer tank 2. A zeolite filter layer 4 is piled on the support grid 5. The bottom of the support grid 5 is connected to a first outlet pipe 10, which is connected to the filter 12. The bottom of the filter 12 is connected to a second outlet pipe 15, and the end of the second outlet pipe 15 is connected to an ultraviolet water purifier 16.

[0017] It should be noted that the ultraviolet water purifier 16 is an existing device. This technology only applies its function and does not change its structure. Therefore, its structure will not be described in detail.

[0018] To improve water flow efficiency, a water flow valve 6 is connected to the side wall of the inner pool 1. The height of the water flow valve is higher than that of the pebble filter layer 3 and the zeolite filter layer 4.

[0019] For ease of water flow control, water flow valve 6 is a solenoid valve.

[0020] To control the flow of water, a first water pump 8 is installed on the inlet pipe 7, a second water pump 11 is installed on the first outlet pipe 10, and a third water pump 14 is installed on the second outlet pipe 15.

[0021] To improve filtration efficiency, an activated carbon layer 13 is provided inside the filter 12. A grid is installed inside the filter 12 to support the activated carbon layer 13 and facilitate its replacement.

[0022] The specific working process of this utility model is as follows:

[0023] During operation, the first water pump 8 is turned on, and the tailwater enters the inlet head 9 from the inlet pipe 7 and then enters the inner pool 1 from the inlet head 9. It accumulates in the inner pool 1 and removes the sludge in the water by settling. At the same time, the pebbles in the pebble filter layer 3 accelerate the sedimentation of the sludge in the water. The settled water will flow from the edge of the inner pool 1 to the outer pool 2. The zeolite filter layer 4 in the outer pool 2 filters out elements such as sulfur and phosphorus in the water. The filtered tailwater is sent to the filter 12 through the first outlet pipe 10. Then, the activated carbon layer 13 adsorbs the organic matter in it. The adsorbed tailwater is then killed by the ultraviolet water purifier 16.

[0024] When there is too much water in the inner pool 1 and the water is clear, open the water passage valve 6 to improve the efficiency of water passage.

Claims

1. A wastewater treatment system for a domestic sewage treatment plant, comprising a filter tank and a filter (12), characterized in that, The filter pool is divided into an inner pool (1) and an outer pool (2). The inner pool (1) is fixedly connected to the inside of the outer pool (2). The edge of the inner pool (1) is lower than the edge of the outer pool (2). The bottom of the inner pool (1) is fixedly connected to an inlet head (9). The inlet head (9) is connected to an inlet pipe (7). A pebble filter layer (3) is provided in the inner pool (1). A support grid (5) is fixedly connected to the lower part of the outer pool (2). A zeolite filter layer (4) is piled on the support grid (5). The bottom of the support grid (5) is connected to a first outlet pipe (10). The first outlet pipe (10) is connected to the filter (12). The bottom of the filter (12) is connected to a second outlet pipe (15). The end of the second outlet pipe (15) is connected to an ultraviolet water purifier (16).

2. The wastewater treatment system for a domestic sewage treatment plant as described in claim 1, characterized in that: A water valve (6) is connected to the side wall of the inner pool (1).

3. The wastewater treatment system for a domestic sewage treatment plant as described in claim 2, characterized in that: The water valve (6) is a solenoid valve.

4. The wastewater treatment system for a domestic sewage treatment plant as described in claim 1, characterized in that: A first water pump (8) is installed on the inlet pipe (7), a second water pump (11) is installed on the first outlet pipe (10), and a third water pump (14) is installed on the second outlet pipe (15).

5. The wastewater treatment system for a domestic sewage treatment plant as described in claim 1, characterized in that: The filter (12) is provided with an activated carbon layer (13).

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