CN111622330A - Novel sponge type gutter inlet for intercepting sewage - Google Patents

Abstract

The invention discloses a novel interception and sewage interception sponge-type rainwater gully, which belongs to the technical field of sponge city drainage. The invention includes a rainwater inlet well room, a sewage interception hanging net, a deflector, a partition plate, a slag collecting basket, a filter material layer, a perforated filter pipe and a rainwater pipe; It is used to filter the rainwater entering the rainwater well chamber from the inlet of the rainwater inlet; the deflector is set under the sewage interception and hanging net, and the deflector is used to guide the rainwater after the primary filtration to flow into the slag collecting basket; At the bottom of the rainwater well chamber, the partition divides the bottom of the rainwater well chamber into an accommodation area and a filter material area. A slag collection basket is placed in the accommodation area for secondary filtration. The perforated filter pipe is arranged at the bottom of the filter material layer, and the perforated filter pipe is used to discharge the rainwater treated by the filter material layer out of the rainwater well chamber; the rainwater pipe is set in the middle of the rainwater well chamber. The invention can effectively intercept and purify the pollutants in the initial rainwater.

Description

A new type of sewage interception sponge-type rainwater outlet

technical field

The invention relates to a rainwater gully, in particular to a novel interception and sewage interception sponge-type rainwater gully, which belongs to the technical field of sponge city drainage.

Background technique

The traditional rainwater outlet only collects and discharges rainwater into the pipe network, without any initial rainwater purification function, which will increase the pollutant load and bring serious pollution to the urban storage water body. When the rainwater enters the gutter, it will cause the gutter to be blocked. When the rainfall is large, it will also cause urban waterlogging, so that the gutter will gradually lose its original function. Therefore, it is of great significance for the improvement of urban water environment to design a rainwater outlet with the function of intercepting sewage and purifying the initial rainwater.

SUMMARY OF THE INVENTION

In view of the problems in the prior art, the present invention provides a novel interception and sewage interception sponge-type gully, which can avoid the risk of clogging of the gully by effectively intercepting pollutants and efficiently purifying the initial rainwater. It plays a role in regulating, storing and purifying the initial rainwater, which can then supplement groundwater, reduce the risk of waterlogging and pollution in the city, and realize the full utilization of water resources, so as to maximize the "seepage, stagnation, storage, purification, use, and drainage of sponge city facilities." " effect.

For realizing the above technical purpose, the technical scheme of the present invention is:

A new type of sewage interception sponge-type rainwater outlet, comprising a rainwater outlet well chamber, a sewage interception hanging net, a deflector, a baffle, a slag collecting basket, a filter material layer, a perforated filter pipe and a rainwater pipe; On the top of the rainwater inlet well chamber, the sewage interception hanging net is used to filter the rainwater entering the rainwater inlet well chamber from the inlet of the rainwater inlet; The last rainwater flows into the slag collecting basket; the separator is arranged at the bottom of the rainwater well chamber, and the separator divides the bottom of the rainwater well chamber into a accommodating area and a filter material area, and a secondary filtration function is placed in the accommodating area. The filter material area is provided with a filter material layer that purifies rainwater; the perforated filter tube is set at the bottom of the filter material layer, and the perforated filter tube is used to discharge the rainwater treated by the filter material layer into the rainwater well. The rainwater pipe is arranged in the middle of the rainwater well room. The present invention has a simple structure, can achieve effective interception of pollutants in the initial rainwater and efficient purification of the initial rainwater, and the purified rainwater can be used to supplement groundwater, thereby realizing full utilization of water resources and maximizing the use of sponge city facilities to "seepage, improve, and clean". The functions of stagnation, storage, purification, utilization, and discharge.

As a preferred solution, the pollution intercepting and hanging net is set as a downwardly curved arc surface. This arrangement can increase the effective area for the primary filtration of rainwater and improve the interception efficiency.

As a preferred solution, the deflector includes two inclined plates, the tops of the two inclined plates are respectively fixed with the two ends of the top of the rainwater well chamber, the two inclined plates are both inclined, and an inverted eighth is formed between the two inclined plates. The slag collecting basket is located just below the inverted figure.

As a further preferred solution, the distance between the bottom ends of the two inclined plates is greater than the maximum length of the slag collecting basket. Such arrangement can facilitate the flexible extraction of the slag collecting basket and facilitate timely cleaning of the pollutants in the slag collecting basket.

As a further preferred solution, the angle between the inclined plate and the wall of the rainwater well chamber ranges from 40° to 50°.

As a preferred solution, the separator is a circumferentially closed separator, and the top of the separator is open.

As a preferred solution, the filter material layer is sequentially arranged from top to bottom with an upper layer of granular filter material, a middle layer of coarse sand filter material, and a bottom layer of fine sand filter material. The particle size of the material is 5-20mm, and the bottom fine sand filter material is 0.5-1mm. This arrangement can purify different types of pollutants in rainwater layer by layer, thereby improving the removal effect of COD, TSS, ammonia nitrogen, total nitrogen, total phosphorus and other pollutants in rainwater, and reducing the pollution load of initial rainwater.

As a further preferred solution, the filter material adopts a modular structure. This arrangement can realize the integrated assembly and filling of the filter material, so as to facilitate its regular replacement or backwash regeneration.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Reference number:

1. Rainwater inlet well room, 2. Sewage interception and hanging net, 3. Baffle plate, 4. Partition plate, 5. Slag collecting basket, 6. Filter material layer, 61. Upper particle filter material, 62. Middle layer coarse sand filter 63. Bottom fine sand filter material, 7. Perforated filter tube, 8. Rainwater pipe

Detailed ways

1, a specific embodiment of the present invention is described in detail, but does not make any limitation to the claims of the present invention.

As shown in Figure 1, a new type of sewage interception sponge-type rainwater inlet includes a rainwater inlet well room, a sewage interception hanging net, a deflector, a baffle, a slag collection basket, a filter material layer, a perforated filter pipe and a rainwater pipe;

The sewage intercepting and hanging net is arranged on the top of the rainwater inlet well room, and the sewage intercepting and hanging net is used to filter the rainwater entering the rainwater inlet well room from the inlet of the rainwater inlet. In order to intercept the large pollutants such as plastic bags, branches and leaves in the rainwater, in order to increase the effective area of the sewage interception hanging net to filter the rainwater at one time, the sewage intercepting hanging net is set as a downward curved arc surface;

The deflector is arranged below the sewage interception and hanging net, and the deflector is used to guide the rainwater after primary filtration into the slag collection basket. Both ends of the top of the well chamber are fixedly connected, and the two inclined plates are set obliquely;

The separator is arranged at the bottom of the rainwater well chamber, the separator is a circumferentially closed separator, the top of the separator is open, and the separator divides the bottom of the rainwater well chamber into a accommodating area and a filter material area, and the accommodating area is There is a slag collecting basket for secondary filtration. The mesh aperture of the slag collecting basket is set to 1-3mm to retain small particle pollutants such as sand and dust that cannot be removed by the fouling and hanging net. The slag collecting basket is located in two inclined blocks. Just below the inverted figure-eight shape formed by the plate, the maximum length of the slag collecting basket is less than the distance between the two inclined plates, so as to facilitate the flexible extraction of the slag collecting basket. The filter material layer, the filter material layer is arranged from top to bottom in order with the upper layer of granular filter material, the middle layer of coarse sand filter material, and the bottom layer of fine sand filter material. Absorb the initial rainwater and purify the rainwater initially. The particle size of the middle layer of coarse sand filter material is 5-20mm. The middle layer of coarse sand filter material can further purify the rainwater and store the initial rainwater. The particle size of the bottom layer of fine sand filter material is 0.5-1mm. In order to facilitate the regular replacement or backwash regeneration of the filter material in the filter material layer, the filter material adopts a modular structure and is assembled and filled in an integrated manner;

The perforated filter pipe is arranged at the bottom of the filter material layer, and the perforated filter pipe is used to discharge the rainwater treated by the filter material layer out of the rainwater well chamber;

The rainwater pipe is arranged in the middle of the rainwater well chamber.

When the rainfall is small, the rainwater entering the rainwater well chamber from the inlet of the rainwater inlet first passes through the sewage interception and hanging net, and the larger pollutants carried by the rainwater scouring the surface are intercepted, and then the rainwater flows into the slag collection basket through the deflector, and cannot be trapped. The small particle pollutants removed by the interception and hanging net are collected by the slag collecting basket and settle to the bottom. With the continuous collection of rainwater in the holding area, the rainwater overflows to the filter material area, and flows through the upper particle filter from top to bottom. Material 5, middle layer coarse sand filter material 6, bottom layer fine sand filter material 7, to remove COD, TSS, ammonia nitrogen, total nitrogen, total phosphorus and other pollutants in rainwater, and finally treated rainwater passes through the perforated filter tube at the bottom of the filter material layer. discharge.

When the rainfall is large, with the continuous collection of rainwater, the rainwater level reaches the location of the rainwater pipe. At this time, part of the rainwater is treated by the filter material layer in the filter material area and then discharged through the perforated filter pipe, and part of the rainwater directly enters the municipal network pipe through the rainwater pipe.

To sum up, the present invention has the following advantages:

(1) The present invention can effectively intercept the pollutants in the initial rainwater by setting the sewage intercepting net and the slag collecting basket at the top and bottom of the rainwater well chamber, wherein the sewage intercepting and hanging net can intercept the plastic bags in the rainwater. , branches and leaves and other large pollutants, the slag collection basket can intercept small particle pollutants such as sand and dust that cannot be removed by the interception and hanging net.

(2) The present invention can not only guide the rainwater after one-time filtering to flow quickly into the slag collecting basket by setting the guide plate matched with the slag collecting basket to improve the interception efficiency of rainwater by the slag collecting basket, but also facilitate the slag collecting. The flexible extraction of the basket facilitates the timely cleaning of contaminants in the slag collecting basket.

(3) The present invention can purify different types of pollutants in rainwater layer by layer by arranging multi-stage filter materials with different particle sizes in the filter material area, wherein the upper particle filter material can quickly absorb the initial rainwater and preliminarily purify the rainwater, The middle layer of coarse sand filter material can further purify the rainwater and store the initial rainwater, while the bottom layer of fine sand filter material deeply purifies the rainwater and supplements the groundwater storage of the initial rainwater, so as to effectively remove the COD, TSS, ammonia nitrogen, total nitrogen, total phosphorus and other pollution in the rainwater reduce the pollution load of initial rainwater. In addition, the filter material in the present invention can adopt a modular structure, which can be assembled and filled in an integrated manner, which is convenient for regular replacement or backwash regeneration.

(4) In the present invention, by setting the perforated filter tube, the external discharge of the purified rainwater can be accelerated, and the flow capacity of the rainwater inlet can be increased.

(5) The present invention can discharge excess rainwater into the municipal network pipe communicated with the rainwater pipe by arranging the rainwater pipe, and by arranging the rainwater pipe in the middle of the rainwater well chamber, the direct discharge of pollutants in the initial rainwater can be avoided, and the high The difference prevents rainwater from being directly discharged into the rainwater pipe and reduces the water load of the municipal network pipe.

It can be understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those of ordinary skill in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effect; as long as it meets the needs of use, it is within the protection scope of the present invention.

Claims (8)

1. a novel interception and sewage interception sponge type rainwater gully, is characterized in that, comprises rainwater gully well room, sewage interception hanging net, deflector, clapboard, slag collecting basket, filter material layer, perforated filter pipe and rainwater pipe; The sewage interception hanging net is installed on the top of the rainwater inlet well room, and the sewage intercepting hanging net is used to filter the rainwater entering the rainwater inlet well room from the inlet of the rainwater inlet. The plate is used to guide the rainwater after primary filtration into the slag collecting basket; the baffle is arranged at the bottom of the rainwater well chamber, and the partition divides the bottom of the rainwater well chamber into a accommodating area and a filter material area, and the accommodating area is placed There is a slag collection basket for secondary filtration, and a filter material layer for purifying rainwater is arranged in the filter material area; the perforated filter tube is arranged at the bottom of the filter material layer, and the perforated filter tube is used to treat the filtered material layer. The rainwater is discharged from the rainwater well room; the rainwater pipe is arranged in the middle of the rainwater well room. 2 . The rainwater outlet according to claim 1 , wherein the sewage intercepting and hanging net is set as a downwardly curved arc surface. 3 . 3. The rainwater inlet as claimed in claim 1, wherein the deflector comprises two inclined plates, the tops of the two inclined plates are respectively fixed with the two ends of the top of the well chamber of the rainwater inlet, and the two inclined plates are respectively fixed. Inclined arrangement, an inverted figure-eight shape is formed between the two inclined plates, and the slag collecting basket is located directly below the inverted figure-of-eight shape. 4. The gully of claim 3, wherein the distance between the bottom ends of the two inclined plates is greater than the maximum length of the slag collecting basket. 5 . The rainwater inlet according to claim 3 , wherein the angle between the inclined plate and the well chamber wall of the rainwater inlet is 40-50°. 6 . 6 . The gully of claim 1 , wherein the partition is a partition closed in the circumferential direction, and the top of the partition is open. 7 . 7. The rainwater inlet as claimed in claim 1, wherein the filter material layer is sequentially arranged with upper layer particle filter material, middle layer coarse sand filter material and bottom layer fine sand filter material from top to bottom, wherein the upper layer particle filter material is The particle size of the material is 25-30mm, the particle size of the middle layer of coarse sand filter material is 5-20mm, and the bottom layer of fine sand filter material is 0.5-1mm. 8. The gully of claim 7, wherein the filter material adopts a modular construction.

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