CN112064769A - A coupled rainwater pipe network optimization structure - Google Patents

Abstract

The application provides an optimized structure of a coupled rainwater pipe network, which belongs to the field of municipal construction. It includes a water collection well and a solid-liquid separation well; the water collection well and the solid-liquid separation well are connected through a large-diameter rainwater drainage pipeline; the outer side of the solid-liquid separation well is connected with an outer water collection tank, and the outer side of the outer water collection tank is connected with a Z-shaped large-diameter. Rainwater drainage pipes. The device effectively increases the rainwater flux and rainwater storage capacity, and at the same time, the rainwater suspended matter separation effect is obvious, which greatly reduces the risk of rainwater flooding and rainwater pollution in the city, and reduces the load of municipal sewage treatment facilities.

Description

A coupled rainwater pipe network optimization structure

technical field

The present application relates to the field of municipal construction, in particular to an optimized structure of a coupled rainwater pipe network.

Background technique

As an important resource for human survival and development, water has an inseparable relationship with the development of urbanization. As the basis for the existence and development of cities, urban water systems are the carrier of shaping the urban landscape space environment and an important symbol of urban taste. . The urban water system problem reflected in the beautiful urban background is first of all "lack of water security". The rapid development of cities has caused land subsidence and urban waterlogging. The main reason is that the rapid development of cities has destroyed the natural pattern of the surface and the natural water cycle. The rapid development of the city also indirectly affects the precipitation pattern over the city, causing the "heat island effect" and "turbidity island effect" within the city, coupled with the imperfect urban drainage system, The ground knot is now serious, and it is necessary to catch every rain. It is not a new thing for cities to look at the sea, and sponge city, as a low-impact development model, has also entered the process of urban development because of this social background.

Sponge city is a sustainable urban construction model described from the perspective of urban stormwater management, and how to improve the effect of urban sewage purification and rainwater utilization is imminent.

SUMMARY OF THE INVENTION

One of the objectives of the present application is to provide an optimized structure of a coupled rainwater pipe network, which aims to improve the existing problems of urban sewage discharge and poor utilization effect.

The technical solution of this application is:

其中，Q₁为建设地区三年均降雨量，L₁为建设地区服务范围内的雨水管网总长度，Kz的范围为1.1～1.3。A coupled rainwater pipe network optimization structure includes a water collection well and a solid-liquid separation well; the water collection well and the solid-liquid separation well are communicated with a large-diameter rainwater drainage pipe; the outer side of the solid-liquid separation well is communicated with an external A water collection tank, the outer side of the outer water collection tank is connected with a Z-shaped large-diameter rainwater drainage pipeline; the diameter of the large-diameter rainwater drainage pipeline is in the range of

Among them, Q1 is the three _- year average rainfall in the construction area, L1 is the total length of the rainwater pipe network within the service area _of the construction area, and the range of Kz is 1.1 to 1.3.

As a technical solution of the present application, a rainwater grate is installed above the inside of the water collection well, and a fine grating is fixedly arranged below the rainwater grate; the thickness of the fine grating is greater than or equal to 10 mm, and the aperture is 5~ 10mm.

As a technical solution of the present application, the solid-liquid separation well is sequentially provided with rainwater grate, fine grille, clear water collection tank, multi-layer inclined plate, baffle plate and sludge settling chamber from top to bottom; The inclined plate is arranged obliquely between the baffle plate and the clean water collection tank; the bottom of the sludge settling chamber is in the shape of an inverted trapezoid, and is connected to a sewage pump through a sewage pipe.

As a technical solution of the present application, the inclination angle of the multi-layered inclined plates is 50°-60°, the length of the single-layered inclined plates is 0.8-1.0 m, and the distance between the adjacent inclined plates is 80mm to 100mm, and the top of the inclined plate is set toward the direction of the solid-liquid separation well and an inner side wall of the water collection well.

As a technical solution of the present application, the value of the well cross-sectional area reconstruction of the solid-liquid separation well is Q ₁ /v _max ～Q ₁ /v _min , wherein Q ₁ is the regional average rainfall in three years, and v _min ～ The value range of _vmax is the range of the upward flow velocity of the inclined plate from 0.4mm/s to 0.6mm/s; the well depth stimulation condition of the solid-liquid separation well needs to satisfy the h _{well depth stimulation range} ≥ H _standard + 1m, the solid-liquid separation well The liquid separation well is added to control the liquid level treatment load q to be 6-10 m ³ /m ² ·h.

As a technical solution of the present application, an overflow port is opened on one side of the clean water collection tank, and is communicated with the outer water collection tank through the overflow port.

As a technical solution of the present application, the diameter of the sewage pipe is greater than or equal to 200 mm.

As a technical solution of the present application, the materials of the large-diameter rainwater drainage pipe, the Z-shaped large-diameter rainwater drainage pipe, and the sewage pipe include anti-seepage materials.

As a technical solution of the present application, the large-diameter rainwater drainage pipeline and the Z-shaped large-diameter rainwater drainage pipeline have the same pipe diameter.

Beneficial effects of this application:

In the optimized structure of the coupled rainwater pipe network of the present application, by increasing the pipe diameter of the urban rainwater drainage pipeline, and adding a solid-liquid separation well at the end of the area to realize solid-liquid separation by using the inclined plate precipitation structure, and in the solid-liquid separation well The fine grille is added inside, so as to realize the overall increase of rainwater flux, the increase of rainwater storage, and the obvious increase of the separation of rainwater suspended matter in the rainwater storage system. The normal transmission and discharge of rainwater inside the city greatly reduces the risk of rainwater flooding and rainwater pollution in the city, and reduces the treatment load of municipal sewage treatment facilities.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic diagram of an optimized structure of a coupled rainwater pipe network provided by an embodiment of the present application.

Icons: 1-optimized structure of coupled rainwater pipe network; 2-water collection well; 3-solid-liquid separation well; 4-large-diameter rainwater drainage pipe; 5-external collection tank; 6-Z large-diameter rainwater drainage pipe; 7-rainwater Grate; 8-fine grille; 9-clean water collection tank; 10-inclined plate; 11-blocker; 12-sludge settling chamber; 13-overflow port; 14-sewage pipe.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. The components of the embodiments of the present application generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Thus, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but is merely representative of selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or is usually placed when the product of the invention is used. The orientation or positional relationship is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.

Furthermore, in this application, unless otherwise expressly specified and limited, a first feature above or below a second feature may include the first and second features being in direct contact, or may include that the first and second features are not directly in contact with each other. The contact is made through additional features between them. Also, the first feature being above, above and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is below, below and below the second feature includes the first feature is directly below and diagonally below the second feature, or simply means that the first feature level is smaller than the second feature.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "arranged", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

Example:

Please refer to FIG. 1, the present application provides a coupled rainwater pipe network optimization structure 1, including a water collection well 2 and a solid-liquid separation well 3; wherein, between the bottom of the water collection well 2 and the solid-liquid separation well 3, a large-diameter rainwater drainage pipeline passes through 4 is connected; the outer side of the solid-liquid separation well 3 is communicated with an outer water collecting tank 5, and the outer side of the outer water collecting tank 5 is connected with a Z-shaped large-diameter rainwater drainage pipe 6. Large-diameter rainwater drainage pipeline 4 and Z-type large-diameter rainwater drainage pipeline 6 are designed with a maximum liquid level difference based on regional precipitation to increase rainwater storage.

The water collection well 2 is a water collection well 2 that conforms to the municipal construction specifications, and the solid-liquid separation well 3 can achieve the effect of increasing the regional rainwater flux, delaying the rainwater evaporation time and indirectly adjusting the urban microclimate to a certain extent.

Further, in this embodiment, a rainwater grate 7 is fixedly installed above the inside of the water collecting well 2, a water inlet hole is opened on the rainwater grate 7, and a fine grille 8 is fixed at 100-200 mm below the rainwater grate 7; The thickness of the fine grating 8 is greater than or equal to 10 mm, and the aperture is 5-10 mm. The fine grating 8 is used to preliminarily filter the floating objects carried in the rainwater runoff.

At the same time, the solid-liquid separation well 3 is sequentially provided with rainwater grate 7, fine grille 8, clean water collection tank 9, multi-layer inclined plate 10, baffle plate 11 and sludge settling chamber 12 from top to bottom, and the sludge settling chamber 12 At the bottom of the solid-liquid separation well 3, it is communicated with the water collection well 2 through the large-diameter rainwater drainage pipeline 4; at the same time, the multi-layer inclined plates 10 are obliquely arranged between the baffle plate 11 and the clean water collection tank 9, and the inclined plate 10 The distance of the supernatant liquid is not less than 1.0m, and the lower part is not less than 1.0m from the bottom of the sludge settling chamber 12; the bottom of the sludge settling chamber 12 is in the shape of an inverted trapezoid, and the sludge settling chamber 12 is convenient for the sedimentation of suspended solids in rainwater, and A movable sewage pump with a lift of 6-10m, namely a screw pump or a submersible sewage pump, is installed on the ground of the solid-liquid separation well 3 to regularly clean up the suspended solids in the sludge settling chamber 12 and the rainwater in the regulation and storage system. reuse. At the same time, it is necessary to control the liquid surface load of the solid-liquid separation well 3 to be 6-12 m ³ /m ² ·h to separate the suspended matter of the rainwater in the rainwater storage system in this system.

The location of the solid-liquid separation well 3 is increased at the end of the region, and is divided into a comprehensive solid-liquid separation well 3 at the regional confluence (the lowest terrain) according to the regional topographic contour line, which can reduce the amount of reconstruction work for the municipal water collection well 2.

It should be noted that, in this embodiment, the inclination angle of the multi-layer inclined plates 10 is 50°-60°, the length of the single-layer inclined plates 10 is 0.8-1.0 m, and the distance between the adjacent inclined plates 10 is 80 mm. ~100mm, and the top of the inclined plate 10 is set toward the direction of the solid-liquid separation well 3 close to an inner side wall of the water collection well 2 .

The value of the well cross-sectional area reconstruction of the solid-liquid separation well 3 is limited to Q ₁ /v _max ～Q ₁ /v _min , where Q ₁ is the regional average rainfall in three years, and the value range of v _min ～v _max is the inclined plate The range of the rising flow rate of 10 is 0.4mm/s～0.6mm/s; the well depth stimulation conditions must be satisfied: _{the depth range of the well depth of the h well} ≥ H _standard + 1.0m, among which, the H _standard is the standard well depth of the municipal water collection well, and the solid-liquid separation well is 3 The additional control liquid level treatment load q is 6 to 10 m ³ /m ² ·h.

At the same time, an overflow port 13 is opened on one side of the clean water collection tank 9, which is communicated with the outer water collection tank 5 through the overflow port 13;

It should be noted that, in this embodiment, the diameter of the sewage pipe 14 is greater than or equal to 200mm, and the sewage pipe 14 should reserve an outlet on the ground, so as to facilitate the subsequent use of a small movable pump on the ground to process the sludge inside the system or reuse it rainwater.

It should be noted that, in this embodiment, the materials of the large-diameter rainwater drainage pipe 4 , the Z-shaped large-diameter rainwater drainage pipe 6 and the sewage pipe 14 include anti-seepage materials. In addition, the large-diameter rainwater drainage pipe 4 and the Z-shaped large-diameter rainwater drainage pipe 6 may have the same pipe diameter, and both use pipes with enlarged pipe diameters for drainage, which can effectively increase the rainwater flux.

的范围中取最大值，其中，Q₁为建设地区三年均降雨量，L₁为建设区域汇水面积的雨水管网总长度，Kz的大小视建设区域汇水面积、建筑密度情况、地形坡度、地面覆盖以及区域气候特征等确定，取值控制在1.1～1.3之间。Further, the setting of the rainwater collection pipe network is low-in and high-out according to the overflow mode, and the pipe diameters of the large-diameter rainwater drainage pipes 4 and Z-type large-diameter rainwater drainage pipes 6 cannot exceed the rainwater pipes ( (full flow) the corresponding pipe diameter at the minimum design flow rate. The diameters of the large-diameter rainwater drainage pipes 4 and Z-type large-diameter rainwater drainage pipes 6 are controlled to be

Take the maximum value in the range of , where Q ₁ is the average rainfall of the construction area in three years, L ₁ is the total length of the rainwater pipe network in the catchment area of the construction area, and the size of Kz depends on the catchment area, building density, and terrain slope of the construction area. , ground coverage and regional climate characteristics, etc., and the value is controlled between 1.1 and 1.3.

According to the structure in this device, it is specifically implemented, and the implementation process is as follows:

1. Calculation of the average annual rainfall in the construction area:

According to the value of the three-year average rainfall in the construction area, Q ₁ is selected, and multiplied by the design variation coefficient Kz=1.1-1.3, the annual average rainfall Q in the construction area is obtained;

2. Statistical summary data L ₁ of the length of the rainwater pipe network within the service area of the construction area;

3. Calculate the cross-sectional area S=Q/L ₁ =(Kz×Q ₁ )/L ₁ of the large-diameter rainwater drainage pipe 4 of the water collection well 2, and then obtain the large-diameter rainwater drainage pipe 4 of the water collection well 2, Z-shaped large Diameter of rainwater drainage pipe 6

的管径范围进行对比，且在满足规范的同时该区间取管径最大值；4, the pipe diameter d and the value range of the large-diameter rainwater drainage pipeline 4 and Z-type large-diameter rainwater drainage pipeline 6 obtained above are:

The range of pipe diameter is compared, and the maximum pipe diameter is taken in this interval while meeting the specification;

5. Calculate Q according to the rainwater flux, and design the sedimentation structure of the internal inclined plate 10 in the solid-liquid separation well 3 with a liquid surface load of 6.0-12 m ³ /m ² ·h, which has the effect of purifying rainwater. The inclination angle of the sludge settling chamber 12 at the bottom is set in the range of 50 to 55°. The function of the sludge settling chamber 12 is to collect the suspended solids precipitated by rainwater on the one hand, and to facilitate the cleaning and reuse of the solid-liquid separation well 3 in the later stage on the other hand. drainage of water;

6. The bottom of the clear water collecting tank connected to the solid-liquid separation well 3 is the bottom elevation of the front end of the Z-type large-diameter drain pipe;

7. On the premise of meeting the regional average annual rainfall storage capacity, set up a clean water overflow port 13 and an external water collecting tank 5 at a depth of not less than 700mm from the buried pipe on the ground, and set up a sludge discharge and pumping pump above the ground to reduce manual dredging and maintenance works, and at the same time reuse the rainwater stored in the water collection well 2 to save water resources;

It should be noted that, in this embodiment, the dual-purpose nozzle for sewage discharge (water intake) needs to be at a certain distance from the bottom of the solid-liquid separation well 3 to prevent blockage of the pump inlet, thereby affecting the service life of the ground pump.

On the whole, the device can effectively reduce the construction volume of the underground water storage tank, and can increase the amount of rainwater infiltration. At the same time, by transforming the water level difference of the rainwater pipe network, the diameter of the rainwater drainage pipe can be enlarged, and the solid-liquid separation well 3 and the water collection tank can be added. By means of other means, the storage capacity of rainwater has been increased, and the water quality of externally discharged rainwater has been purified at the same time. Compared with the original municipal rainwater pipe network, it increases the rainwater flux, delays the evaporation of rainwater, and indirectly alleviates the urban heat island effect; after optimizing the rainwater pipe network system, the rainwater storage capacity is increased, the risk of urban waterlogging is reduced, and the water volume of urban reuse water is increased. Greatly saves water resources; by adding fine grids 8 in the water collection well 2 and the solid-liquid separation well 3 added at the end and adding a precipitation structure of the inclined plate 10 in the solid-liquid separation well 3, the rainwater is separated from coarse to fine. The floating and suspended solids in the water tank initially purify the water quality of rainwater, reduce the pollution risk of initial rainwater discharge, and also reduce the workload of municipal treatment facilities.

In the coupling-type rainwater pipe network optimization structure 1 of the present application, by increasing the pipe diameter of the urban rainwater drainage pipeline, and adding a solid-liquid separation well 3 at the end of the area, the solid-liquid separation well 3 is realized by using the precipitation structure of the inclined plate 10. The fine grille 8 is added inside the liquid separation well 3, so as to realize the increase of the rainwater flux, the increase of the rainwater storage amount and the obvious increase of the separation amount of the rainwater suspended matter inside the rainwater storage system. The gap between the lines can be used for the normal transmission and discharge of urban rainwater, which greatly reduces the risk of rainwater flooding and rainwater pollution in the city, and reduces the treatment load of municipal sewage treatment facilities.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims (9)

1. A coupling rainwater pipe network optimization structure is characterized by comprising a water collecting well and a solid-liquid separation well; the water collection well is communicated with the solid-liquid separation well through a large-caliber rainwater drainage pipeline; the outer side of the solid-liquid separation well is communicated with an outer water collecting tank, and the outer side of the outer water collecting tank is connected with a Z-shaped large-caliber rainwater drainage pipeline; the pipe diameter range of the large-diameter rainwater drainage pipeline is

Wherein Q is₁For the construction of the area, the rainfall is equal in three years, L₁The Kz range is 1.1-1.3 for the total length of the rainwater pipe network in the service range of the construction area.

2. The coupling type rainwater pipe network optimizing structure of claim 1, wherein a rainwater grate is installed above the interior of the water collection well, and a fine grid is fixedly arranged below the rainwater grate; the thickness of the fine grid is greater than or equal to 10mm, and the aperture is 5-10 mm.

3. The optimization structure of the coupling type rainwater pipe network according to claim 1, wherein the solid-liquid separation well is provided with a rainwater grate, a fine grid, a clear water collecting tank, a plurality of layers of inclined plates, a flow baffle plate and a sludge settling chamber from top to bottom in sequence; the plurality of layers of inclined plates are obliquely arranged between the flow baffle and the clean water collecting tank; the bottom of the sludge settling chamber is of an inverted trapezoid structure and is connected to a sewage pump through a sewage discharge pipe.

4. The coupling-type rainwater pipe network optimization structure of claim 3, wherein the inclination angle of the plurality of layers of inclined plates is 50-60 degrees, the length of the single layer of inclined plates is 0.8-1.0 m, the distance between the adjacent inclined plates is 80-100 mm, and the top of each inclined plate is arranged towards the direction of one inner side wall of the solid-liquid separation well close to the water collection well.

5. The optimization structure of the coupling-type rainwater pipe network according to claim 3, wherein the well cross-sectional area of the solid-liquid separation well is modified to be Q₁/v_max～Q₁/v_minWherein Q is₁The rainfall is the three-year average rainfall of the construction area; v. of_min～v_maxThe value range of (A) is the ascending flow velocity of the inclined plate, and the range of (A) is 0.4 mm/s-0.6 mm/s; the well depth transformation condition of the solid-liquid separation well needs to satisfy h_{Depth of wellScope of modification}≥H_{Sign board}+1m, wherein H_{Sign board}The standard well depth of the municipal water collection well; the solid-liquid separation well is additionally provided with a liquid level control treatment load q of 6-10 m³/m²·h。

6. The optimization structure of the coupled rainwater pipe network of claim 3, wherein an overflow port is opened at one side of the clean water collecting tank and is communicated with the outer water collecting tank through the overflow port.

7. The coupling-type rainwater pipe network optimized structure of claim 3, wherein the pipe diameter of the sewage draining pipe is greater than or equal to 200 mm.

8. The coupled rainwater pipe network optimized structure of claim 3, wherein the large-caliber rainwater drainage pipeline, the Z-shaped large-caliber rainwater drainage pipeline and the sewage discharge pipe are made of impermeable materials.

9. The coupled rainwater pipe network optimized structure of claim 1, wherein the large-caliber rainwater drainage pipeline and the Z-shaped large-caliber rainwater drainage pipeline have the same pipe diameter.

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