Rainwater treatment and recycling device

Abstract

The utility model discloses a rainwater treating and recycling device which comprises a containing pool, the containing pool comprises a pool wall, a first space for containing a first filtering layer is arranged in one side of the containing pool, a third space for containing filtered clear water is arranged in the pool wall on the side away from the first space, and a second space for containing a second filtering layer is arranged between the first space and the third space. A first through hole communicated with the first space is formed in the pool wall on one side of the first space, a water inlet pipe is installed on the first through hole, an overflow pipe is arranged on the pool wall of the third space, the third space is communicated with the second space at the lower portion, and a third filter layer is laid on the upper portion of the first filter layer and the upper portion of the second filter layer. Pollutants in rainwater are intercepted and treated, the recycling standard and requirement are met, pollution is reduced, the rainwater recycling rate is increased, and economic benefits are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rainwater treatment and discharge, and in particular to an industrial ecological rainwater treatment and recycling device. Background Art

[0002] In the factory rainwater systems of the prior art, such as roadside ditches and drainage networks, only drainage facilities are often considered, hoping to collect rainwater as soon as possible and aggregate it into the nearest rainwater ditch to reduce the drainage and flood control pressure within the factory area. However, this part of rainwater is mixed with pollutants within the enterprise. For example, it generally carries a large amount of organic matter, N, P and other non-point source pollutants to flow outside the factory, causing great pollution to natural rivers. Although rainwater does not contain toxic and harmful substances such as chemicals, pollutants such as organic matter, N, P and other pollutants carried by rainwater on the road surface will inevitably cause pollution to the discharged water body. Moreover, for the coal shed area in the thermal power plant, the rainwater may also carry some coal particles. These particles cannot be decomposed by microorganisms and eventually settle in the municipal water body, causing pollution and damage to the water body. In addition, some departments or units, such as large chemical plants, will carry out planned treatment and discharge of their own rainwater. However, for some enterprises without obvious pollutants, such as thermal power plants, conventional processing plants, etc., they often collect rainwater through rainwater pipes and discharge it into the municipal rainwater network. Eventually, this part of rainwater will still enter the municipal water body, and the recycling rate is low. Utility Model Content

[0003] The utility model is to overcome the shortcomings of the above-mentioned prior art and provide an industrial ecological rainwater treatment and reuse device to intercept and treat pollutants in rainwater to meet the standards and requirements for recycling and reuse, reduce pollution, increase the rainwater recycling rate, and improve economic benefits.

[0004] An industrial ecological rainwater treatment and reuse device comprises a holding pool, the holding pool comprises a pool wall, a space one for placing a filter layer one is provided inside one side of the holding pool, a space three for holding filtered clean water is provided in the pool wall away from the space one, a space two for placing a filter layer two is provided between the space one and the space three, a through hole one connected to the space one is provided on the pool wall on one side of the space one, an inlet pipe is installed on the through hole one, an overflow pipe is provided on the pool wall of the space three, the space three is connected to the space two at the bottom, and the filter layer three is laid on the top of the filter layer one and the filter layer two.

[0005] A filter layer 4 is arranged at the lower part of the filter layer 2.

[0006] A through hole 2 is arranged on the pool wall of the space 3, and a water outlet pipe is installed on the through hole 2.

[0007] The water outlet pipe is connected to a recovery water pump, and the recovery water pump is installed in the inner space of the holding tank.

[0008] A primary support layer is laid between filter layer 1 and filter layer 3; the top of filter layer 3 is at the same height as the top of the pool wall;

[0009] A secondary supporting layer is arranged between the second filter layer and the fourth filter layer.

[0010] The pore diameter of the primary support layer is not greater than the average particle diameter of the filter layer three;

[0011] The pore diameter of the secondary supporting layer is not larger than the average particle diameter of the zeolite layer.

[0012] The first filter layer and the fourth filter layer are pebble layers; the first filter layer adopts a pebble layer with a smaller average particle size, and the fourth filter layer adopts a pebble layer with a larger average particle size than the filter layer.

[0013] The third filter layer is a gravel layer; the first aquatic plant capable of reducing the concentration of pollutants in water is planted on the third filter layer.

[0014] The second filter layer is a zeolite layer; aquatic plants that can improve water quality are planted on the second filter layer.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model passes the intercepted and collected rainwater through primary filtration, biological treatment and secondary filtration, so that it meets the standards and requirements for reuse and can be used as greening water, thereby reducing the pollution of rainwater to municipal water bodies, increasing the rainwater recycling rate and improving economic benefits.

[0017] 2. By setting up an overflow pipe, the excess rainwater during heavy rain can be discharged to the municipal pipeline, protecting the device of the utility model from overflowing rainwater in the factory area.

[0018] 3. The filter layer 1 and the filter layer 4 are pebble layers; the filter layer 1 uses a pebble layer with a smaller average particle size, and the filter layer 4 uses a pebble layer with a larger average particle size than the filter layer. The pebble layer can initially intercept large particles in the rainwater to prevent them from affecting the roots and stems of plants.

[0019] The pore diameter of the primary support layer is not larger than the average particle diameter of the filter layer 3, so as to prevent the filter layer 3 from leaking down to the pebble layer; the pore diameter of the secondary support layer is not larger than the average particle diameter of the zeolite layer, so as to prevent the zeolite layer from leaking down to the filter layer 1. The arrangement of the primary support layer and the secondary support layer can prevent the gravel layer and the zeolite layer from leaking into the pebble layer, so as to ensure the increase of the filtering and water seepage efficiency and effect.

[0020] 4. After rainwater is treated by aquatic plants in the gravel layer, the concentration of pollutants in the water can be greatly reduced. The average particle size of the gravel layer is 5-10mm, the thickness is small, and it is also the initial treatment stage for rainwater. It is suitable for planting some aquatic plants with short roots and low requirements for water quality, such as calamus, etc. At the same time, planting aquatic plants strengthens the filtering effect of rainwater.

[0021] After rainwater is treated by aquatic plants in the zeolite layer, the water quality can be greatly improved, and it can basically meet the water quality requirements for daily watering of greenery and flushing toilets. The average particle size of the zeolite layer is 3-5mm, and the depth is large. The water quality of rainwater passing through the zeolite layer is relatively good, which is suitable for planting aquatic plants with large rhizomes, long branches, and slightly higher water quality requirements, such as Cyperus rotundus. At the same time, the filtration effect of rainwater is enhanced by planting aquatic plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0024] In the figure, 1 is the pool wall, 2 is the filter layer one, 3 is the filter layer three, 4 is the filter layer two, 5 is the space three, 6 is the water inlet pipe, 7 is the aquatic plant one, 8 is the aquatic plant two, 9 is the recovery water pump, 10 is the water outlet pipe, 11 is the overflow pipe, 12 is the primary supporting layer, 13 is the secondary supporting layer, 14 is the cover plate, and is the filter layer four 15. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Combination Figure 1 , an industrial ecological rainwater treatment and reuse device includes a holding pool, the holding pool includes a pool wall 1, a space 1 for placing a filter layer 1 2 is provided inside one side of the holding pool, a space 3 5 for holding filtered clean water is provided in the pool wall 1 away from the side of the space 1, a space 2 for placing a filter layer 2 4 is provided between the space 1 and the space 3, a through hole 1 connected to the space 1 is provided on the pool wall 1 on one side of the space 1, a water inlet pipe 6 is installed on the through hole 1, an overflow pipe 11 is provided on the pool wall 1 of the space 3 5, the space 3 5 is connected to the space 2 at the bottom, and a filter layer 3 3 is laid on the filter layer 1 2 and the filter layer 2 4. By setting the overflow pipe 11, the excess rainwater during heavy rain can be discharged to the municipal pipeline, protecting the device of the utility model from overflowing rainwater in the factory area.

[0027] A filter layer 4 15 is provided at the lower part of the filter layer 2 4.

[0028] A through hole 2 is provided on the pool wall 1 of the space 3 5 , and a water outlet pipe 10 is installed on the through hole 2.

[0029] The outlet pipe 10 is connected to a recovery water pump 9, which is installed in the inner space of the holding tank. The treatment water is collected and recycled by the recovery water pump 9.

[0030] A primary support layer 12 is laid between the filter layer 1 2 and the filter layer 3 3. The filter layer 3 3 is at the same height as the top of the pool wall. The primary support layer 12 is lower than the top of the pool wall.

[0031] A secondary supporting layer 13 is provided between the second filter layer 4 and the fourth filter layer 15 .

[0032] The pore diameter of the primary support layer 12 is not greater than the average particle diameter of the filter layer 3, so as to prevent the filter layer 3 from leaking down to the pebble layer 2.

[0033] The pore diameter of the secondary support layer 13 is not greater than the average particle diameter of the 4 zeolite layers, so as to prevent the 4 zeolite layers from leaking down to the filter layer 2.

[0034] By setting the primary supporting layer 12 and the secondary supporting layer 13, the gravel layer and the zeolite layer can be prevented from leaking into the pebble layer, thereby ensuring increased water seepage efficiency and effect.

[0035] The filter layer 12 and the filter layer 24 15 are pebble layers. The filter layer 12 uses a pebble layer with a smaller average particle size, such as a size of 4-8 mm, and the filter layer 24 15 uses a pebble layer with an average particle size larger than that of the filter layer 12, such as a size of 8-15 mm.

[0036] The pebble layer can initially intercept large particles in the rainwater to prevent them from affecting the roots and stems of plants.

[0037] The filter layer 3 3 is a gravel layer; aquatic plants 7 that can reduce the concentration of pollutants in water are planted on the filter layer 3 3. After rainwater is treated by the aquatic plants 1 in the gravel layer, the concentration of pollutants in the water can be greatly reduced. The gravel layer has an average particle size of 5-10 mm, a small thickness and is also the stage of initial treatment of rainwater. It is suitable for planting some aquatic plants 1 that do not have long roots and do not have high requirements for water quality, such as calamus.

[0038] The filter layer 24 is a zeolite layer. Aquatic plants 28 that can improve water quality are planted on the filter layer 24. After the rainwater is treated by the aquatic plants 2 in the zeolite layer, the water quality can be greatly improved, and can basically meet the water quality requirements for daily watering of greenery and flushing toilets. The average particle size of the zeolite layer is 3-5mm, and the depth is large. The water quality of rainwater passing through the zeolite layer is also relatively good, which is suitable for planting aquatic plants 2 with large rhizomes, long branches, and slightly higher water quality requirements, such as Cyperus rotundus.

[0039] Of course, aquatic plants can be selected but not limited to calamus and Cyperus, and other suitable or equivalent plants can be used. When passing through the gravel layer and the zeolite layer, on the one hand, impurities in the water are intercepted by filtration, and on the other hand, soluble pollutants in the water are treated through the growth of plants.

[0040] After daily rainwater is collected and aggregated through the factory rainwater pipe, it enters the holding pool through the water inlet pipe 6. The rainwater first passes through the filter layer 2, that is, the pebble layer, to intercept the large particles contained in the rainwater, ensuring that the rising rainwater is relatively clean. Rainwater enters filter layer three 3, i.e., gravel layer, through primary support layer 12. Suitable plants such as calamus 7 are planted in the gravel layer. Rainwater flows through calamus 7, etc., i.e., it is ecologically treated by plants. The treated rainwater enters filter layer two 4, i.e., zeolite layer. Suitable plants such as Cyperus rotundus 8 are also planted in the zeolite layer. After secondary treatment by plants such as Cyperus rotundus, it enters clean water area, i.e., space three 5, through secondary support layer 13 and pebble layer. A recycling water pump 9 is provided in the clean water area, which recycles clean water to other water use points through an outlet pipe 10. An overflow pipe 11 is also provided in space three 5 of the clean water area to facilitate the direct discharge of excess rainwater out of the factory. In addition, a cover plate 14 is provided in the clean water area to play a protective and safety role, and to facilitate the lifting and maintenance of the water pump.

[0041] If the rainwater quality is poor and one treatment fails to achieve satisfactory results, the front-end treatment areas can be connected in series, and the desired water quality can be achieved through multiple treatments. The utility model has low operation and maintenance costs, and the planted plants can also achieve the effect of beautiful landscape.

[0042] In the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the purpose of describing the present invention rather than requiring the present invention to be constructed or operated in a specific position, and therefore cannot be understood as a limitation on the present invention. The terms "connected" and "connected" in the present invention should be understood in a broad sense, for example, it can be a connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0043] The above is a preferred embodiment of the present invention, and the description of the specific embodiment is only used to better understand the concept of the present invention. For ordinary technicians in this technical field, several improvements or equivalent substitutions can be made according to the principle of the present invention, and these improvements or equivalent substitutions are also considered to fall within the protection scope of the present invention.

Claims

1. A rainwater treatment and reuse device, comprising a holding pool, the holding pool comprising a pool wall, characterized in that: A space one for placing filter layer one is provided inside one side of the containing pool, a space three for holding filtered clean water is provided in the pool wall on the side away from space one, a space two for placing filter layer two is provided between space one and space three, a through hole one connected to space one is provided on the pool wall on one side of space one, a water inlet pipe is installed on through hole one, an overflow pipe is provided on the pool wall of space three, space three is connected to space two at the bottom, and filter layer three is laid on top of filter layer one and filter layer two.

2. The rainwater treatment and recycling device according to claim 1, characterized in that: A filter layer 4 is arranged at the lower part of the filter layer 2.

3. The rainwater treatment and recycling device according to claim 1, characterized in that: A through hole 2 is arranged on the pool wall of the space 3, and a water outlet pipe is installed on the through hole 2.

4. The rainwater treatment and recycling device according to claim 3 is characterized in that: The water outlet pipe is connected to a recovery water pump, and the recovery water pump is installed in the inner space of the holding tank.

5. The rainwater treatment and recycling device according to claim 2, characterized in that: A primary support layer is laid between filter layer 1 and filter layer 3; the top of filter layer 3 is at the same height as the top of the pool wall; A secondary supporting layer is arranged between the second filter layer and the fourth filter layer.

6. The rainwater treatment and recycling device according to claim 5, characterized in that: The pore diameter of the primary support layer is not greater than the average particle diameter of the filter layer three; The pore diameter of the secondary supporting layer is not larger than the average particle diameter of the zeolite layer.

7. The rainwater treatment and recycling device according to claim 2, characterized in that: The first filter layer and the fourth filter layer are pebble layers; the first filter layer adopts a pebble layer with a smaller average particle size, and the fourth filter layer adopts a pebble layer with a larger average particle size than the filter layer.

8. The rainwater treatment and recycling device according to claim 1, characterized in that: The third filter layer is a gravel layer; the first aquatic plant capable of reducing the concentration of pollutants in water is planted on the third filter layer.

9. The rainwater treatment and recycling device according to claim 1, characterized in that: The second filter layer is a zeolite layer; and aquatic plants capable of improving water quality are planted on the second filter layer.

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