CN219156677U - A high-efficiency filtration cycle backflow contact oxidation pond - Google Patents

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a high-efficiency filtration circulation reflux contact oxidation pond, which comprises a filtration unit, wherein the water outlet end of the filtration unit is connected with a circulation reflux oxidation unit for removing pollutants in a water body; the filtering unit comprises a reservoir, a submersible sewage pump is arranged in the reservoir, a filter for removing suspended matters in water is connected to the water outlet end of the submersible sewage pump, and the water outlet end of the filter is communicated with the circulating reflux oxidation unit; the circulating reflux oxidation unit comprises a tank body, the interior of the tank body is divided into a continuous circulating reflux water channel through a partition wall, one end of the water channel, which is close to the filter, is provided with a water inlet, the other end of the water channel is provided with a water outlet, aerobic areas and anaerobic areas which are alternately distributed are arranged in the water channel according to the water flow direction, and an arc-shaped guide wall is arranged at the turning position. The utility model improves the water purification efficiency and the purification effect and reduces the occupied area by carrying out multistage treatment on farmland drainage.

Description

A high-efficiency filtration cycle backflow contact oxidation pond

technical field

The utility model relates to the technical field of sewage treatment, in particular to a high-efficiency filtration cycle backflow contact oxidation pond.

Background technique

It is well known that when the farmland is drained, especially when it rains, the soil will be lost with the surface runoff, which will increase the concentration of particulate matter in the drainage. Therefore, before entering the treatment system, it is usually necessary to set up ecological ditches or sedimentation tanks for sedimentation to reduce the concentration of suspended solids, but this It will lead to easy formation of silt at the bottom of the pond, speed up the dredging cycle, which is not conducive to later operation and maintenance, and will increase the land construction area of the oxidation pond, which increases the difficulty and cost of construction for areas where land resource utilization is tight; The digging volume is large, and the hydraulic retention time is usually more than 2 days, which is easy to generate odor and breed mosquitoes; in addition, the purification effect of only using microorganisms, algae and plants to treat sewage is unstable and has a single function, and the aerobic area of most oxidation ponds, Both the facultative area and the anaerobic area are vertically distributed from top to bottom, and their purification efficiency is low from the perspective of sewage flow, which cannot meet the needs of sewage purification and treatment.

Utility model content

The purpose of this utility model is to solve the disadvantages of poor treatment effect, large floor area, high construction cost and inconvenient operation and maintenance in the prior art, and propose a high-efficiency filter cycle backflow contact oxidation pond.

In order to achieve the above object, the utility model adopts the following technical solutions:

A high-efficiency filtration circulation backflow contact oxidation pond, including a filter unit, the water outlet end of the filtration unit is connected with a circulation backflow oxidation unit for removing pollutants in the water body;

The filter unit includes a reservoir, and a submersible sewage pump is placed inside the reservoir, and a filter for removing suspended matter in the water body is connected to the water outlet of the submersible sewage pump, and the water outlet of the filter is connected to the circulation The backflow oxidation unit is connected, and the bottom of the filter is provided with a sewage outlet;

The circulating reflux oxidation unit includes a pool body, and the inside of the pool body is divided into a waterway for continuous circulation through a partition wall. One end of the waterway near the filter is provided with a water inlet, and the other end is provided with a water outlet. There are alternately distributed aerobic zones and anaerobic zones in the direction, and an arc-shaped diversion wall is installed at the turning point.

Preferably, the effective water depth in the pool is 3-5m, the hydraulic retention time is greater than 10h, the reflux ratio is ≤40%, and emergent plants are planted around the pool.

Preferably, the excavation slope around the pool body is 1:3-1:1, and the aspect ratio of the pool body is not greater than 3:1.

Preferably, the area of the aerobic zone accounts for 40%-60% of the pool body area, and a filler frame is provided in the aerobic zone, and the filler frame is fixed on the bottom of the pool through a steel pipe socket, and several biological filler.

Preferably, an aeration system is installed at the bottom of the aerobic zone, and the aeration system includes an aeration fan and a microporous aeration pan communicated with the aeration fan through pipes.

Preferably, an ecological floating island is provided on the water surface of the anaerobic zone, and aquatic plants are planted on the ecological floating island.

Compared with the prior art, the beneficial effects of the utility model are:

1. The utility model is equipped with a filter unit, which can reduce the impact force of water flow and form a steady flow state, and can efficiently remove a large amount of suspended solids and other solid particles in the water body, reduce the concentration of suspended solids in the water body, and facilitate circulation and reflux oxidation The survival and growth of submerged plants in the unit facilitates the operation and treatment of the subsequent circulation and oxidation unit, thereby improving the efficiency and effect of farmland drainage purification.

2. By adopting the principle of biological contact oxidation method, the utility model constructs a continuous circulation waterway in the circulation backflow oxidation unit, and uses microorganisms to form an aerobic-anaerobic alternately distributed environment in the waterway, which improves the water body purification efficiency and The purification effect also reduces the occupied area, thereby reducing the cost of farmland drainage purification.

3. The utility model can effectively improve the uneven flow rate by installing an arc-shaped diversion wall at the place where the water flow changes direction in the water channel, avoid the vortex in the water channel, ensure the uniform distribution of biological fillers, accelerate the degradation rate of pollutants, and facilitate later maintenance .

Description of drawings

Fig. 1 is the top view structure schematic diagram of the utility model, and the arrow in the figure is the direction of water flow;

Fig. 2 is the structural representation of filter unit in the utility model;

Fig. 3 is a schematic cross-sectional structure diagram of the utility model.

In the figure: 1. Filtration unit; 10. Reservoir; 11. Submersible sewage pump; 12. Filter; 2. Recirculation oxidation unit; 20. Pool body; 21. Waterway; 22. Water inlet; 24. Aerobic zone; 25. Anaerobic zone; 26. Curved diversion wall; 27. Biological filler; 28. Aeration system; 29. Ecological floating island.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Referring to Figures 1-3, a high-efficiency filtration circulation backflow contact oxidation pond includes a filter unit 1 for removing suspended solids in the water body, and the outlet end of the filtration unit 1 is connected to a circulation backflow oxidation pond for removing pollutants in the water body through a pipeline. Unit 2 can quickly and efficiently remove pollutants in farmland drainage, which not only improves the purification efficiency and effect, but also reduces the cost of water purification.

As shown in Figure 2, the filter unit 1 includes a small reservoir 10 for temporarily storing farmland drainage, which is convenient to reduce the impact of water flow and form a steady flow state. A buoy type submersible pump 11 is placed inside the reservoir 10, and the buoy The water outlet of the type submersible sewage pump 11 pumps the water in the reservoir 10 into the fully automatic cleaning filter 12, and through the fully automatic cleaning filter 12, the suspended solids in the farmland drainage are filtered out through the stainless steel mesh, which can be removed. A certain amount of granular phosphorus reduces the concentration of suspended solids in the water, and after filtration, it enters the recirculation oxidation unit 2. Due to the high transparency of the filtered water, it is beneficial to the survival and growth of submerged plants in the recirculation oxidation unit.

The circulating backflow oxidation unit 2 includes a pool body 20. The inside of the pool body 20 is divided into a waterway 21 for continuous circulation and backflow through a partition wall. One end of the waterway 21 near the filter 12 is provided with a water inlet 22, and the other end is provided with a water outlet 23. The water outlet 23 adopts the form of overflow to pass through the water, and set scum baffles, and the water channel 21 is provided with alternately distributed aerobic zones 24 and anaerobic zones 25 according to the direction of water flow, which improves the purification efficiency and effect of water body and reduces the land occupation area, and the water flow diversion is installed with an arc-shaped diversion wall 26 for improving the uneven flow rate of the water body, avoiding the vortex in the water channel, ensuring the uniform distribution of biological fillers, and further improving the purification efficiency and purification effect of the water body.

As shown in Figure 3, the pond body 20 is artificially excavated pond or utilizes natural pond transformation, and the aspect ratio of pond body 20 is not more than 3:1, and the excavation slope around pond body 20 is 1:3-1:1, and the Anti-seepage measures should be taken around the body 20, at the bottom and inside the partition walls. The effective water depth inside the pool body 20 is set to 3-5m, the hydraulic retention time is greater than 10h, and the reflux ratio is less than or equal to 40%. There are emergent plants, and emergent plants include one or a combination of canna, calamus, emperor bamboo grass, reed, and iris.

As shown in Figure 3, the area of the aerobic zone 24 accounts for 40%-60% of the area of the pool body 20, and a filler frame is arranged in the aerobic zone 24, and the filler frame is fixed on the bottom of the pool by a steel pipe socket, and the filler frame is suspended There are several biological fillers 27, and an aeration system 28 is installed at the bottom of the aerobic zone 24. The aeration system 28 adopts a microporous aeration pan, which is connected with an aeration fan through a pipeline.

An ecological floating island 29 is arranged on the water surface of the anaerobic zone 25, and aquatic plants are planted on the ecological floating island 29, and the aquatic plants are one or more combinations of Bala grass, emperor bamboo grass, canna and ryegrass.

When this embodiment is in use, the farmland drainage can reduce the impact force under the action of the small reservoir 10, form a steady flow state, and then flow into the fully automatic cleaning filter 12 through the water outlet of the buoy type submersible sewage pump 11, which can Efficiently remove a large amount of suspended solids and other solid particles in the water body, reduce the concentration of suspended solids in the water body, and the filtered water body enters the recirculation oxidation unit 2, and the sewage is aerated in sections through the biological filler 27, the aeration system 28 and the partition wall , form an aerobic-anaerobic alternate horizontal operating environment, and at the same time, the biological filler 27 provides a carrier for the attachment of microorganisms, microorganisms can degrade organic matter in water, aquatic plants can further absorb pollutants in the water body, and sewage circulates back in the pond for many times After repeated treatment in the aerobic zone and anaerobic zone, the pollutants in the water body can be effectively removed, the purification efficiency and purification effect are enhanced, the hydraulic retention time is short, and the floor area is effectively reduced.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Any equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (6)

1. The efficient filtering circulation reflux contact oxidation pond is characterized by comprising a filtering unit (1), wherein the water outlet end of the filtering unit (1) is connected with a circulation reflux oxidation unit (2) for removing pollutants in a water body;

the filtering unit (1) comprises a water reservoir (10), a submersible sewage pump (11) is arranged in the water reservoir (10), a filter (12) for removing suspended matters in a water body is connected to the water outlet end of the submersible sewage pump (11), and the water outlet end of the filter (12) is communicated with the circulating reflux oxidation unit (2);

the circulating reflux oxidation unit (2) comprises a tank body (20), the interior of the tank body (20) is divided into a continuous circulating reflux water channel (21) through a partition wall, one end of the water channel (21) close to the filter (12) is provided with a water inlet (22), the other end of the water channel is provided with a water outlet (23), aerobic areas (24) and anaerobic areas (25) which are alternately distributed are arranged in the water channel (21) according to the water flow direction, and an arc-shaped guide wall (26) is arranged at the water flow steering position.

2. The efficient filtration circulation reflux contact oxidation pond according to claim 1, wherein the effective water depth in the pond body (20) is 3-5m, the hydraulic retention time is more than 10h, the reflux ratio is less than or equal to 40%, and emergent aquatic plants are planted around the pond body (20).

3. The efficient filtration and recirculation contact oxidation pond according to claim 2, wherein the excavation gradient around the pond body (20) is 1:3-1:1, and the aspect ratio of the pond body (20) is not more than 3:1.

4. The efficient filtration circulation reflux contact oxidation pond according to claim 1, wherein the area of the aerobic zone (24) accounts for 40% -60% of the area of the pond body (20), a filling frame is arranged in the aerobic zone (24), the filling frame is fixed at the bottom of the pond through steel pipe socket joint, and a plurality of biological fillers (27) are suspended on the filling frame.

5. The efficient filtration and recirculation contact oxidation pond according to claim 4, wherein an aeration system (28) is installed at the bottom of the aerobic zone (24), and the aeration system (28) comprises an aeration fan and a microporous aeration disc communicated with the aeration fan through a pipeline.

6. The efficient filtration circulation reflux contact oxidation pond according to claim 1, wherein an ecological floating island (29) is arranged on the water surface of the anaerobic zone (25), and aquatic plants are planted on the ecological floating island (29).

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