A drain port pretreatment device with zigzag backflow structure

Abstract

The utility model discloses a kind of outlet pretreatment device of adopting zigzag backflow structure, it is related to the technology of governing outlet pollution, including first processing unit and second processing unit of being arranged side by side, the front end of first processing unit is equipped with water inlet tank, the side of water inlet tank is equipped with water inlet, the inside of water inlet is equipped with basket grating, first processing unit is sequentially equipped with first processing area and second processing area along length direction, first processing area is filled with first filler, second processing area is filled with second filler and third filler, the rear end of second processing unit is equipped with water outlet tank, the side of water outlet tank is equipped with water outlet, overflow passage is equipped between first processing unit and second processing unit.The utility model can effectively treat sewage water, so as to carry out black removal and deodorization to the water body of outlet large overflow confluence river.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment technology, specifically relating to the technology for treating sewage discharge from outlets. Background Technology

[0002] River pollution control is one of the major environmental challenges facing the world. In particular, in southeastern my country, the monsoon climate brings concentrated rainfall during certain periods, resulting in severe stormwater and sewage mixing and large overflows, which exacerbates the deterioration of river water quality.

[0003] Due to incomplete separation of rainwater and sewage in some urban river basins, as well as damaged pipelines, rainwater and sewage mix at discharge outlets, resulting in large overflows and deterioration of water quality in river areas.

[0004] Therefore, there is an urgent need for a pretreatment device for discharge outlets to remove blackening and odor from the water that overflows into the river. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a pretreatment device for discharge outlets with a zigzag reflux structure to treat the water flowing into the river from the discharge outlet to remove blackening and odor.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A pretreatment device for a discharge outlet with a zigzag reflux structure includes a first treatment unit and a second treatment unit arranged side-by-side along the width of the device. The first treatment unit has an inlet trough on its outer side along its length, and an inlet on its side, connected to the discharge outlet of a sewage well. A basket grille is provided on the inner side of the inlet. The first treatment unit has a first treatment zone and a second treatment zone arranged sequentially along its length. The first treatment zone is filled with a first filler, the second treatment zone with a second filler, and the second treatment unit with a third filler. The second treatment unit has an outlet trough on its first side along its length, and an outlet on its side, connected to a river. Emergent plants are planted on the upper layer of the first and second treatment units. A flow channel is provided between the first and second treatment units on their second sides along their length.

[0008] Preferably, the first filler is sunflower seed chips; and / or, the second filler is activated carbon; and / or, the third filler is a mixture of ceramsite and volcanic rock.

[0009] Preferably, the first, second, and third fillers are all filled in the form of eco-bags.

[0010] Preferably, the first processing unit and the second processing unit, as well as the first processing area and the second processing area, are separated by partitions.

[0011] Preferably, the partition comprises a frame made of square steel tubing and stainless steel mesh fixed to the frame.

[0012] Preferably, the water outlet tank is provided with a baffle wall on the side near the third treatment unit. The height of the baffle wall is lower than the filling height of the third filler, and there is an interval space between the baffle wall and the third treatment unit.

[0013] Preferably, the upper part of the discharge outlet pretreatment device is equipped with a fence on the first side, the second side and the side near the riverbank, and the fence is equipped with a safety warning sign.

[0014] Preferably, a cover plate is provided above the water inlet tank, the water outlet tank, and the flow passage.

[0015] Preferably, the side wall of the water outlet trough is provided with a ladder.

[0016] Preferably, emergent plants are planted on the outer side of the water outlet of the river channel.

[0017] The present invention adopts the above technical solution and has the following beneficial effects:

[0018] The system adopts a zigzag flow structure, in which the first and second treatment units are arranged side by side, with the inlet and outlet tanks on the same side. A flow channel is provided between the first and second treatment units on their respective sides, so the water flows along the zigzag line and is treated sequentially. This allows the length of the first and second treatment units to be increased within a limited space, and the flow path of the sewage in the pretreatment device at the discharge outlet to be extended. This enables the first and second treatment units to effectively treat the sewage inlet, thereby eliminating blackening and deodorizing of the water flowing into the river from the discharge outlet.

[0019] The basket screen firstly acts as a buffer and regulator for the incoming water, and at the same time, it can trap solid particles (such as stones, branches), hair and fibrous suspended matter in the sewage that are larger than the set size, preventing them from entering the pretreatment device at the outlet and causing blockage.

[0020] The first filler can be sunflower seed chips, which can intercept larger particulate impurities in the water through physical filtration. The second filler can be activated carbon, which has a strong adsorption capacity for residual small particles, pigments, odor substances and some dissolved organic matter in the water. The third filler can be a mixture of ceramsite and volcanic rock, which has a high-efficiency adsorption and chemical precipitation removal capacity for phosphorus in the water, and at the same time has a certain interception effect on fine particles in the water.

[0021] Emergent plants can absorb and accumulate pollutants in water to a certain extent. At the same time, their leaves float on the water surface, which not only beautifies the environment but also further purifies the wastewater.

[0022] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0023] The utility model will be further described below with reference to the accompanying drawings: Figure 1 This is a plan view of the outlet pretreatment device in the embodiment of this utility model; Figure 2 for Figure 1 Sectional view 1-1; Figure 3 for Figure 1 Sectional view 2-2; Figure 4 for Figure 1 Sectional view 3-3; Figure 5 for Figure 1 Sectional view 4-4; Figure 6 for Figure 1 Sectional view 5-5; Figure 7 This is a schematic diagram of the partition in an embodiment of the present utility model; Figure 8 for Figure 1 Enlarged view at point A in the middle; Figure 9 for Figure 2 Enlarged view at point B; Figure 10 This is a schematic diagram of the ladder structure in the embodiment of this utility model; Figure 11 This is a schematic diagram of the installation structure of the basket grille in the embodiment of this utility model; Figure 12 This is a schematic diagram of the installation structure of the basket grille in the embodiment of this utility model; Figure 13 This is a schematic diagram of the installation structure of the basket grille in the embodiment of this utility model; In the diagram: 1. Outlet pretreatment device; 10. Body; 101. Base plate; 102. Side plate; 103. Intermediate partition wall; 104. Tie beam; 11. First treatment unit; 111. First filler; 112. Second filler; 12. Second treatment unit; 121. Third filler; 122. Retaining wall; 123. Drainage pipe; 13. Inlet trough; 131. Installing side column; 132. Flow channel; 14. Outlet trough; 15. Ladder; 151. Outlet; 152. Cover plate; 16. Fence; 17. Partition; 18. Frame; 181. Stainless steel mesh; 182. Angle steel; 183. River channel; 2. Emergent plants; 21. Riverbank; 3. Sewage well; 31. Inlet pipe; 32. Overflow baffle; 33. Crushed stone cushion layer; 34. Wooden pile; 35. Detailed Implementation

[0024] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0025] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0026] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "inner," and "outer," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0029] The pretreatment device for the discharge outlet is installed on the riverbank. The scenario involved in this embodiment is a case where the sewage discharge volume is large, the distance between the discharge outlet and the riverbank is close, but there is not enough length. Therefore, a zigzag recirculation structure is designed to ensure that the water flowing into the river from the discharge outlet can be treated to remove black spots and odors within a limited space.

[0030] like Figures 1 to 13 As shown, a pretreatment device 1 for a discharge outlet with a zigzag reflux structure is installed on a riverbank 3, connecting a sewage well 31 and a river channel 2. The device has a rectangular structure and includes a first treatment unit 11 and a second treatment unit 12 arranged side by side along the width direction of the discharge outlet pretreatment device 1. The length direction of the first treatment unit 11 and the second treatment unit 12 extends along the extension direction of the river channel, that is, assuming that the local extension direction of the river channel is a straight line, the length direction of the first treatment unit 11 and the second treatment unit 12 is parallel to the extension direction of the river channel, and the first treatment unit 11 is located on the side away from the river channel. The first treatment unit 11 has an inlet trough 13 on the outer side of its first length, and an inlet on the side of the inlet trough 13. An inlet pipe 32 is provided between the inlet and the sewage well 31. A basket grille 131 is provided on the inner side of the inlet. The first treatment unit 11 has a first treatment area and a second treatment area in sequence along its length. The first treatment area is filled with a first filler 111, the second treatment area is filled with a second filler 112, and the second treatment unit is filled with a third filler 121. The second treatment unit has an outlet trough 15 on the outer side of its first length, and an outlet 152 is provided on the side of the outlet trough 15. Emergent plants are planted on the upper layer of the first and second treatment units. A flow channel 14 is provided between the second length sides of the first treatment unit 11 and the second treatment unit 12.

[0031] Because of the use of a zigzag reflux structure, that is, the first and second treatment units are arranged side by side, the inlet tank and the outlet tank are located on the same side, and a flow channel is provided between the second side of the length of the first and second treatment units, the water flows along the zigzag line and is treated sequentially. Thus, within a limited space, the length of the first and second treatment units can be increased, and the flow path of the sewage in the pretreatment device at the discharge outlet can be extended, so that the first and second treatment units can effectively treat the sewage inlet, thereby treating the water body flowing into the river from the discharge outlet to remove black spots and odors.

[0032] The influent passes sequentially through a basket screen, the first treatment unit, and the second treatment unit, finally entering the river via an outlet trough, completing the pretreatment process. The basket screen first acts as a buffer and regulator for the influent, while simultaneously trapping solid particles (such as stones and branches), hair, and fibrous suspended matter larger than a set diameter, preventing them from entering the pretreatment unit and causing blockages. The first, second, and third packing materials all utilize existing technologies but are designed specifically for the characteristics of the discharged wastewater. The first packing material effectively filters out larger particles through physical filtration; the second packing material has a strong adsorption capacity for residual fine particles, pigments, odor substances, and some dissolved organic matter; and the third packing material has efficient adsorption and chemical precipitation removal capabilities for phosphorus in the water, while also having some interception effect on fine particles. Therefore, it is possible to eliminate blackening and odor from the large volume of overflowing water flowing into the river from the discharge point.

[0033] The riverbank 3 is provided with a crushed stone cushion layer 34, and the discharge outlet pretreatment device 1 is entirely installed on the crushed stone cushion layer 34. Wooden piles 35 are installed below the crushed stone cushion layer 34 on the side closest to the river channel. The crushed stone cushion layer can play a role in drainage and uniformly distributing pressure, while the wooden piles can ensure stability, enabling it to operate stably in complex environments such as silty geology, ensuring the reliability and continuity of the equipment, and ensuring the safe operation of the equipment in different geological environments.

[0034] In some embodiments, the first filler is sunflower seed chips with a particle size of 5-10 mm and a specific gravity of 1:1.8; the second filler is activated carbon with a particle size of 0.8-1.2 cm and a specific gravity of 1:0.5-0.6; the third filler is a mixture of ceramsite and volcanic rock in a 1:1 ratio, or a commercially available mixture of ceramsite and volcanic rock. The volcanic rock has a particle size of 3-5 cm and a specific gravity of 1:0.75-0.85, while the ceramsite is LMCL phosphorus removal filter media with a particle size of 1.0-2 cm and a specific gravity of 1:1.25. These materials possess a large specific surface area and suitable pore structure, providing excellent attachment and growth sites for denitrifying microorganisms. Microorganisms can form biofilms on their surface and within the pores. This biofilm structure facilitates microbial aggregation and synergistic effects, enhancing the microorganisms' ability to treat nitrogen pollutants. Furthermore, the first, second, and third fillers are all filled in the form of eco-bags.

[0035] In some embodiments, the outlet pretreatment device 1 includes a reinforced concrete body 10, which includes a rectangular base plate 101, side plates 102 surrounding the upper perimeter of the base plate, and a central partition wall 103 located in the middle of the width above the base plate. The side plates on the side of the body facing the river form a slope protection. The central partition wall is used to separate the first treatment unit and the second treatment unit. The length of the central partition wall is such that the first side connects to the side plate on the first side, and the second side has a gap between it and the side plate on the second side, forming a flow passage 14. In addition, tie beams 104 are provided between the top of both sides of the width of the central partition wall and the side plates.

[0036] In addition, partitions 18 are provided on both sides of the length of the first processing unit, and the first processing area and the second processing area are separated by the partitions. Partitions are also provided on both sides of the length of the second processing unit. Each partition 18 includes a frame 181 made of square steel tubing and stainless steel mesh 182 fixed to the frame. The first processing unit has slots, each slot consisting of two rows of angle steel 183 fixed to the bottom of the first processing unit by expansion bolts, with slots formed between adjacent rows of angle steel 183. A retaining wall 122 is provided on the outer side of the first side of the length of the second processing unit, and there is a gap between the retaining wall 122 and the partition on the first side of the length of the second processing unit. The height of the retaining wall is lower than the filling height of the third packing material. The retaining wall serves to block water, ensuring that the overall water level within the device remains stable. Furthermore, a drain pipe 123 is provided at the bottom of the retaining wall to drain water, facilitating maintenance, such as replacing the packing material.

[0037] Furthermore, to ensure pedestrian safety, the upper part of the discharge outlet pretreatment device is equipped with a fence 17 on the first side, the second side, and the side closest to the riverbank, and safety warning signs are affixed to the fence. The fence is at least 1.2 meters high, and safety warning signs are hung in conspicuous locations.

[0038] Furthermore, the inlet tank, outlet tank, and flow channel are all equipped with covers 16 to enhance protection. A ladder 151 is provided on the side wall of the outlet tank for easy maintenance. An overflow baffle 33 is provided near the discharge outlet of the sewage well.

[0039] like Figures 11 to 13 As shown, the basket grille 131 has mounting side posts 132 on both sides. The mounting side posts can be made of angle steel and fixed to the side plate with expansion bolts. Because it is designed as a detachable and washable structure, it facilitates regular cleaning of the intercepted debris, ensuring the filtration effect of the grille.

[0040] Furthermore, emergent plants 21, such as iris, are planted on the outer side of the water outlet of the river channel, which not only beautifies the environment but also further purifies the sewage.

[0041] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. A pretreatment device for an outlet employing a zigzag reflux structure, characterized in that, The device includes a first treatment unit and a second treatment unit arranged side-by-side along the width of the pretreatment device at the discharge outlet. The first treatment unit has an inlet trough on its outer side along its length, and an inlet on its side. The inlet is connected to the discharge outlet of a sewage well. A basket grille is provided on the inner side of the inlet. The first treatment unit has a first treatment area and a second treatment area arranged sequentially along its length. The first treatment area is filled with a first filler, the second treatment area is filled with a second filler, and the second treatment unit is filled with a third filler. The second treatment unit has an outlet trough on its first side along its length, and an outlet on its side. The outlet is connected to a river. Emergent plants are planted on the upper layer of the first and second treatment units. A flow channel is provided between the first and second treatment units on their second sides along their length.

2. The outlet pretreatment device according to claim 1, characterized in that, The first, second, and third packing materials are all filled in the form of eco-bags.

3. The outlet pretreatment device according to claim 2, characterized in that, The first processing unit and the second processing unit, as well as the first processing area and the second processing area, are all separated by partitions.

4. The outlet pretreatment device according to claim 3, characterized in that, The partition includes a frame made of square steel tubes and stainless steel mesh sheets fixed to the frame.

5. The outlet pretreatment device according to claim 1, characterized in that, The water outlet tank is equipped with a baffle wall on the side near the third treatment unit. The height of the baffle wall is lower than the filling height of the third filler, and there is an interval space between the baffle wall and the third treatment unit.

6. The outlet pretreatment device according to claim 1, characterized in that, The upper part of the discharge outlet pretreatment device is equipped with a fence on the first side, the second side and the side near the riverbank, and the fence is equipped with a safety warning sign.

7. The outlet pretreatment device according to claim 1, characterized in that, The inlet tank, outlet tank, and flow channel are all covered with a cover plate.

8. The outlet pretreatment device according to claim 1, characterized in that, The side wall of the water outlet trough is equipped with a ladder.

9. The outlet pretreatment device according to claim 1, characterized in that, Emergent plants are planted on the outside of the water outlet of the river channel.

Images