CN204530839U - A kind of Initial Runoff collection and purification reutilizing device - Google Patents

Abstract

The utility model discloses a device for collecting, purifying and reusing primary runoff. It can be used for recovery of initial rainfall runoff. This device includes storage, collection, purification, reuse, activation devices, etc. The storage device includes a collection pipe and a storage container; the purification device consists of a filter layer and a synchronous nitrification and denitrification layer; the recycling device includes a submersible pump, irrigation pipes and irrigation branch pipes; the activation device consists of a grooved pipe and an activator. When it rains, part of the rainfall runoff enters the storage container through the collection pipe, and the other part is purified by the purification device and discharged into the groundwater or river. Nutrients such as nitrogen and phosphorus in rainwater are activated to facilitate the absorption of vegetation, and unused reused water can pass through the purification device again. The device has the advantages of collecting and reusing rainfall runoff, controlling non-point source pollution, activating nutrients beneficial to plant growth in reclaimed water, and saving fertilization costs.

Description

A device for collecting, purifying and reusing primary runoff

technical field

The utility model relates to an initial runoff collection, purification and reuse device, in particular to an initial runoff collection, purification and reuse device.

Background technique

my country is one of the countries with severe shortage of water resources. The per capita water resources are only 1/4 of the world's per capita water resources, and the distribution of my country's water resources is seriously uneven. In recent years, the total water supply in my country is about 550 billion cubic meters, and the agricultural water consumption accounts for about 70% of the total water consumption, of which the agricultural irrigation water consumption accounts for 90% of the total agricultural water consumption. Therefore, it should be fully developed and recycled. All possible water resources, increase the recycling rate of agricultural water use, increase the rate of agricultural irrigation water use, and reduce the total amount of agricultural irrigation water. In the development and utilization of water resources, rainwater is a high-quality water resource that has been neglected for a long time. The total amount of rainwater resources in my country is relatively abundant, and the annual rainfall is about 6 trillion cubic meters. Among them, 3.2 trillion cubic meters permeated into the soil, most of which were absorbed by vegetation and evaporated, and a small part was added to groundwater; while the other 2.8 trillion cubic meters of rainwater formed ground runoff, 2.7 trillion cubic meters converged into Surface water such as rivers and lakes, and a small amount become groundwater. If the initial runoff rainwater resources are utilized, the total amount of water used will be greatly reduced and the utilization rate of water resources will be improved.

In addition, non-point source pollution is also a problem that cannot be ignored. For example, the farmland runoff formed by rainfall causes agricultural N and P non-point source pollution, and the farmland runoff flows into the river water to cause eutrophication of the water body. According to the survey, the loss of nutrient elements N and P in agricultural chemical fertilizers in my country is serious, and the average utilization rate of N and P by crops is only about 35%, and about 2/3 of the remaining part enters the water body through surface runoff and soil infiltration, causing rivers Eutrophication of lake water. Therefore, it is of great practical significance to recycle and utilize runoff resources at the initial stage of development while reducing non-point source pollution.

The patent with the publication number CN102786110 is a method for the control and recycling of farmland nitrogen and phosphorus non-point source pollution. It provides a method for controlling farmland N and P non-point source pollution by using water storage facilities and adsorption units. The invention has the advantages of good purification effect and water resource recycling.

However, this technology only achieves the purpose of pollution prevention and control of farmland N and P elements in storage facilities, and does not pay attention to the purification of farmland runoff that does not enter the storage tank. As a result, the concentration of N and P in the reused water is greatly reduced, and the water is not used as a resource to a large extent. Moreover, the adsorption unit of the facility has limited adsorption capacity and requires frequent maintenance, which requires a large amount of engineering and high cost. The invention patent with the publication number CN101555071 is a technology of artificial wetlands, which provides a method for controlling N and P surface source pollution in farmland in river network areas by using buffer zones. purpose, but does not recycle rainwater resources.

In general, for the control of the same pollutant, the resource recovery plan is the first choice, followed by the treatment plan. Although N and P elements in drainage are pollutants to water bodies, they are essential nutrients to vegetation. Studies have shown that N and P elements in farmland drainage account for 2/3 of the total N and P in fertilization. If this part of nutrients is reused in farmland, it can save farmers 2/3 of fertilizer costs, which has considerable economic benefits. significance. The beneficial effect of the utility model is that the initial rainfall runoff is accumulated, and at the same time, the uncollected and utilized rainwater is purified, thereby reducing the possibility of non-point source pollution. In addition, an activation device is installed in the device, which can release more nutrients that are beneficial to the growth of vegetation when the rainwater is recharged, so as to truly achieve the purpose of saving fertilizer and turning rainwater into resources.

Contents of the invention

In order to solve the problems faced in the background technology, the purpose of this utility model is to provide a device for collecting, purifying and reusing primary runoff.

The technical scheme of the utility model is as follows:

A primary runoff collection, purification and reuse device includes a storage device, a runoff collection device, a recycling device, a cavity, a drainage area, an engineering soil layer, and an activation device;

The storage device includes: a water storage container, a balance pipe, and a ventilation pipe;

The recycling device includes: irrigation branch pipelines, submersible pumps, irrigation pipelines;

The runoff collection device includes: a runoff collection pipe and a filter screen;

The drainage area includes: a purification device and a drainage device;

The purification device includes: synchronous nitrification and denitrification layer, filter layer;

The drainage device includes: drainage filler, drainage pipe;

The activation device includes: a grooved tube, an activator;

The multiple water storage containers in the runoff collection device are connected through balance pipes and ventilation pipes, and the water storage containers are connected to the surface through the runoff collection pipes of the runoff collection device. The drainage area is located in the cavity above the water storage containers. And the filter layer and the synchronous nitrification and denitrification layer are laid in sequence, and the engineering soil layer is laid on the filter layer. The irrigation branch pipeline unit in the recycling device is buried in the engineering soil layer and connected with the irrigation pipeline. The irrigation pipeline is connected to the water storage through the submersible pump. The container is connected, and the grooved pipe of the activation device is arranged at the outlet of the irrigation branch pipe to realize the collection, purification and reuse of rainfall runoff.

Preferably, the grooved tube is provided with an activator, and the activator material is citric acid and ascorbic acid supported on activated carbon.

Preferably, a balance pipe (2) and a ventilation pipe (3) are provided between the water storage containers to balance the water volume among multiple water storage containers.

Preferably, the purification device is composed of a filter layer and a synchronous nitrification and denitrification layer, the material of the filter layer is selected from one or more of fruit shells, straw, activated carbon, and activated alumina, and the material of the synchronous nitrification and denitrification layer is selected from the filling mass Active PVF foam filler with a polymeric porous carrier with a fraction of 8% activated carbon.

Preferably, the drainage device is composed of a drainage filler and a drainage pipe, and the purified rainwater enters the drainage layer and is discharged through the drainage pipe.

Preferably, the drainage filler is gravel, pebble or sand.

Preferably, the runoff collection pipe is provided with a filter screen to filter debris so as not to block the rainwater collection pipe.

The beneficial effect of the utility model is that part of the rainwater is absorbed by the vegetation, and the water purification device finally discharges into rivers, lakes or groundwater without any pollution risk. The other part forms surface runoff, which is stored in the water storage device through the runoff collection device. When water is needed, the pumping equipment is used to pump the stored water to the ground, and after the activation device, it becomes a reused water resource that is more conducive to vegetation growth. pollution of the environment.

The device collects surface runoff through the rainfall runoff collection device and the storage device, which reduces the loss of water resources, and achieves the purpose of rainwater reuse through the recycling device. At the same time, the device improves the nutrient availability of vegetation in the recycled water through the activation device. Concentration, saving the cost of fertilization.

Description of drawings

Fig. 1 is the structural representation of the utility model example 1.

Fig. 2 is the partial enlargement figure of the utility model example 1.

Fig. 3 is the activation device figure of the utility model example 1.

In the figure: water storage container 1, balance pipe 2, ventilation pipe 3, submersible pump 4, drainage filler 5, synchronous nitrification and denitrification layer 6, filter layer 7, drainage pipe 8, irrigation pipe 9, rainwater collection pipe 10, filter screen 11. Activation device 12, concrete cavity 13, irrigation branch pipe 14, engineering soil layer 15, grooved pipe 16, activator 17.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1-3, a device for collecting, purifying and reusing initial runoff includes a storage device, a runoff collecting device, a recycling device, a cavity 13, a drainage area, an engineering soil layer 15, and an activation device 12; the wall of the cavity 13 Paved with concrete.

The storage device includes: a water storage container 1, a balance pipe 2, and a ventilation pipe 3;

The recycling device includes: irrigation branch pipeline 14, submersible pump 4, irrigation pipeline 9;

The runoff collection device includes: a runoff collection pipe 10, a filter screen 11;

The drainage area includes: a purification device and a drainage device;

The purification device includes: synchronous nitrification and denitrification layer 6, filter layer 7;

The drainage device includes: drainage filler 5, drainage pipe 8;

The activation device 12 includes: a grooved pipe 16, an activator 17;

The multiple water storage containers 1 in the runoff collection device are connected through the balance pipe 2 and the ventilation pipe 3, the water storage containers 1 are connected to the ground surface through the runoff collection pipe 10 of the runoff collection device, and the drainage area is located in the cavity 13 above the water storage container 1 In the purification device, the filter layer 7 and the synchronous nitrification and denitrification layer 6 are laid sequentially from top to bottom, and the engineering soil layer 15 is laid above the filter layer 7, and the irrigation branch pipeline unit 14 in the recycling device is buried in the engineering soil layer 15 and It communicates with the irrigation pipeline 9, the irrigation pipeline 9 communicates with the water storage container 1 through the submersible pump 3, and the grooved pipe 16 of the activation device 12 is arranged at the water outlet of the irrigation branch pipeline 14 to realize the collection and purification of rainfall runoff for reuse.

The grooved tube 16 is provided with an activator 17, and the material of the activator 17 is citric acid and ascorbic acid supported on activated carbon.

A balance pipe 2 and a ventilation pipe 3 are provided between the water storage containers 1 to balance the water volume among multiple water storage containers, and the quantity, shape and material of the water storage containers are set according to local actual conditions.

The purification device is composed of a filter layer 7 and a synchronous nitrification and denitrification layer 6. The material of the filter layer 7 is selected from one or more materials with obvious adsorption effects such as fruit shells, straw, activated carbon, and activated alumina. The material of the nitrification layer 6 is the active PVF foam filler filled with a polymer porous carrier with a mass fraction of 8% activated carbon.

The drainage device is composed of a drainage filler 5 and a drainage pipe 8, and the purified rainwater enters the drainage layer and is discharged through the drainage pipe.

The drainage filler 5 is selected from materials with better water permeability such as gravel, pebbles or sand.

The runoff collection pipe 10 is provided with a filter screen 11 to filter debris so as not to block the rainwater collection pipe.

The initial runoff collection and purification reuse method of the device is:

When it rains, part of the rainwater forms runoff and enters the underground water storage container 1 through the runoff collection pipe 10 with a filter screen 11; the other part of the rainwater falls to the ground and flows into the cavity 13 constructed of concrete. The surface vegetation intercepts the flow, and the other part infiltrates into the engineering soil layer 15, and enters the drainage area after being filtered by the engineering soil layer 15. The infiltration water first passes through the filter layer 7, then passes through the synchronous nitrification and denitrification layer 6, and finally passes through the drainage filler 5 for drainage. Pipe 8 is discharged into rivers, lakes or groundwater;

When water is needed, use the submersible pump 4 to draw water from the water storage container 1, and send it to the irrigation branch pipeline 14 on the surface through the irrigation pipeline 9. When the stored rainwater flows out from the water outlet, it is mixed into the activator 17 in the activation device 12. When the rainwater is reused The unabsorbed water enters the filter layer 7 and the synchronous nitrification and denitrification layer 6 of the purification device through the engineering soil layer 15 again, and finally enters the drainage layer 5 and is discharged through the drain pipe 8 .

When it rains, a part of the rainfall forms runoff and directly enters the underground water storage container 1 through the rainwater collection pipe 10 with the filter screen 11 . Another part of the rain falls to the ground and flows into the cavity 13 made of concrete, part of which is intercepted by the vegetation on the ground, and part of it infiltrates into the engineering soil layer 15. composed of drainage areas. The seepage water first passes through the filter layer 7, then through the synchronous nitrification and denitrification layer 6, and finally passes through the better water-permeable drainage area filler 5 and is discharged into rivers, lakes or groundwater through the drain pipe 8.

When water is needed, water is drawn from the water storage container 1 by the submersible pump 4, and sent to the irrigation branch pipeline 14 on the surface through the irrigation pipeline 9. During irrigation, the stored rainwater flows out from the water outlet, and the water is composed of a grooved pipe 16 and an activator 17. The impact of the activation device 12, the rainwater can release more nutrients that are beneficial to the survival and reproduction of microorganisms in the soil, and can promote the growth of plant root nodules, which can promote the conversion of nutrients such as nitrogen and phosphorus in the reuse water by microorganisms and plants in the soil. Absorption. When rainwater is reused, the unabsorbed moisture enters the filter layer 7 and synchronous nitrification and denitrification layer 6 of the purification device through the engineering soil layer 15 again, and finally enters the drainage layer 5 and is discharged through the drain pipe 8. After a series of nitrification-denitrification processes of adsorption, filtration and biotransformation, the content of nitrogen, phosphorus and other substances in the water body is greatly reduced, and the threat of the discharged water body to environmental eutrophication is basically eliminated.

Claims (7)

1. an Initial Runoff collection and purification reutilizing device, is characterized in that: comprise accumulation device, runoff gathering-device, reclamation set, cavity (13), catchment, engineering soil layer (15), activating apparatus (12);

Described accumulation device comprises: tank (1), balance pipe (2), ventilating pipe (3);

Described reclamation set comprises: irrigate lateral (14), submersible pump (4), irrigation conduit (9);

Described runoff gathering-device comprises: runoff collecting pipe (10), filter screen (11);

Described catchment comprises: purifier and dewatering installation;

Described purifier comprises: synchronous nitration and denitrification layer (6), filtration beds (7);

Described dewatering installation comprises: draining filler (5), gutter (8);

Described activating apparatus (12) comprising: grooved pipe (16), activator (17);

Multiple tanks (1) in runoff gathering-device are connected with ventilating pipe (3) by balance pipe (2), tank (1) is communicated to earth's surface by the runoff collecting pipe (10) of runoff gathering-device, catchment is arranged in the cavity (13) of tank (1) top, filtration beds (7) and synchronous nitration and denitrification layer (6) is laid from top to bottom successively in purifier, filtration beds (7) top laying project soil layer (15), irrigation lateral unit (14) in reclamation set to be embedded in engineering soil layer (15) and to be communicated with irrigation conduit (9), irrigation conduit (9) is communicated with tank (1) by submersible pump (3), the grooved pipe (16) of activating apparatus (12) is arranged on irrigates lateral (14) delivery port, realize rainfall runoff collection and purification recycling.

2. Initial Runoff collection and purification reutilizing device as claimed in claim 1, it is characterized in that: described grooved pipe (16) is provided with activator (17), activator (17) material is load citric acid on the activated carbon, ascorbic acid.

3. Initial Runoff collection and purification reutilizing device as claimed in claim 1, is characterized in that: be provided with the water yield between balance pipe (2) and the next balanced multiple tank of ventilating pipe (3) between described tank (1).

4. Initial Runoff collection and purification reutilizing device as claimed in claim 1, it is characterized in that: described purifier is made up of filtration beds (7) and synchronous nitration and denitrification layer (6), one or more in filtration beds (7) material selection shell, stalk, active carbon, activated alumina, synchronous nitration and denitrification layer (6) material selection filling quality mark is the active PVF foam stuffing of the high-molecular porous carrier of 8% active carbon.

5. Initial Runoff collection and purification reutilizing device as claimed in claim 1, is characterized in that described dewatering installation is made up of draining filler (5) and gutter (8), and the rainwater through the cleaning of purification enters drainage blanket, is discharged by gutter.

6. Initial Runoff collection and purification reutilizing device as claimed in claim 5, is characterized in that: described draining filler (5) is rubble, cobble or sandy soil.

7. Initial Runoff collection and purification reutilizing device as claimed in claim 1, is characterized in that: described runoff collecting pipe (10) is provided with filter screen (11), filters foreign material in order to avoid blocking rainwater-collecting pipeline.