CN111663630A - A side wall type sewage interception bucket device and sewage interception system suitable for horizontal mixed flow outlet in culvert - Google Patents

Abstract

The invention provides a side wall type sewage intercepting hopper device suitable for a horizontal mixed flow discharge port in an underground channel and a sewage intercepting system, wherein a sewage intercepting hopper (3) is arranged on the side wall of the underground channel (1), the first side of the sewage intercepting hopper (3) is fixed with the side wall of the underground channel (1) through a first connecting position (12), an input interface pipe (22) is arranged on the first side of the sewage intercepting hopper (3) and is communicated with the horizontal mixed flow discharge port (2) through the input interface pipe (22), an overflow port (10) is arranged on the second side of the sewage intercepting hopper (3), and a sewage intercepting pipeline (14) is connected below the sewage intercepting hopper (3) through an interface (20); the invention creates a new sewage interception mode, and the sewage interception device is used for intercepting the sewage in the horizontal mixed flow discharge port on the inner side of the underdrain, so that the problem of serious pollution in the underdrain is effectively solved, the structure is simple, the assembly is convenient, and the maintenance and management work is basically not needed in the use process.

Description

A side wall type sewage interception bucket device suitable for horizontal mixed flow outlet in underdrain and sewage interception system

technical field

The invention relates to the technical field of sewage treatment, in particular to a sidewall type sewage interception bucket device and a sewage interception system suitable for a horizontal mixed flow outlet in an underdrain.

Background technique

The central area of the city is called a high-density built-up area due to its dense population and high urban building density. A major feature of the drainage system in the high-density built-up area of the first-tier cities in southern my country is that the underdrain water system is developed, and most of the drainage systems are located below the main roads of the city. , dominated by culverts. The drainage system of the old community in the underdrain watershed in the high-density built-up area has the following characteristics: (1) Mixed flow of rain and sewage in the riser; (2) The existing municipal main pipes have small diameters, and there are rain and sewage staggered connections, pipeline siltation, downslope and sewage overflow. (3) The houses on both sides of the culvert are close to the canal, and there is no condition for laying sewage pipes. The residents of the restaurants and shops on both sides of the strait, and residents of urban villages directly enter the culvert through the rainwater outlet or the holes they cut. (4) The properties above the culvert are dense, and most of the sewage is directly discharged into the culvert. For a long time, the culvert could not be effectively controlled, the river channel in the hidden culvert section was seriously silted up, and a large amount of pollutants were discharged into the river channel, causing the river channel to be black and smelly, which seriously affected the living environment of nearby residents and the ecological environment of the river basin;

Considering the particularity of culverts in high-density built-up areas, some culverts are all urban trunk roads, and it is extremely difficult to relieve traffic. In addition, the culverts have a long history, and the properties on top of them are dense. The houses on both sides of the culverts are built adjacent to the canals, and there are no construction conditions on both sides of the culverts. At the same time, the subway lines near some culverts are dense, and the subway lines nearby run through each other, and the construction of sewage interception pipelines has a great impact on the subway. Considering the multiple external factors of the culvert, there is no possibility of implementing sewage interception pipelines on both sides of the culvert. Therefore, it is urgent to develop a device for intercepting sewage in the culvert.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a sidewall type sewage interception bucket device and a sewage interception system suitable for the horizontal mixed flow outlet in the underdrain. The present invention creates a new sewage interception method. The sewage in the horizontal mixed flow outlet is intercepted, which effectively solves the problem of serious pollution in the underdrain. The structure is simple, the assembly is convenient, and maintenance and management work is basically unnecessary during use.

For this reason, the present invention adopts the following technical solutions:

A sidewall type sewage interceptor device suitable for horizontal mixed flow discharge in an underdrain is characterized in that a sewage interception bucket is arranged on the sidewall of the underdrain, and the first side of the sewage interception bucket is connected to the sidewall of the underdrain through a first connection part. Fixed, the first side of the sewage interception bucket is provided with an input interface pipe, which is communicated with the horizontal mixed flow outlet through the input interface pipe, the second side of the sewage interception bucket is provided with an overflow port, and the bottom of the sewage interception bucket is connected with a sewage interception pipeline through the interface.

Further: the sewage interception pipeline includes a vertical section sewage interception pipeline connected with the bottom of the sewage interception bucket, and a horizontal section sewage interception pipeline is arranged below the vertical section sewage interception pipeline.

Further: the outer side of the vertical section sewage interception pipeline is fixed to the bracket through a circular hoop, and the bottom of the bracket and the horizontal section sewage interception pipeline are fixed by square-coated concrete.

Further: the shape of the dirt intercepting bucket is the upper cylindrical buffer space and the lower conical; the input interface pipe is arranged on the upper part of the first side of the upper cylindrical buffer space, and the overflow port is arranged on the second side of the upper cylindrical buffer space. The upper part of the side, the second side is one of the side surfaces of the upper cylindrical buffer space except the first side.

Further: the side wall of the underdrain is provided with a connection cavity formed by chiseling around the horizontal mixed flow outlet, the input interface pipe is buried in the side wall of the connection cavity, and the horizontal mixed flow outlet penetrates the side wall of the underdrain and the input interface. The pipes are sealed and connected; the embedded section of the input interface pipe is provided with the first connection part; the connection cavity is filled with micro-expanded concrete.

Further: a gap filling material is arranged between the horizontal mixed flow outlet and the sewage intercepting bucket.

Further: a support pipe is sleeved on the outer surface of the sewage interception pipe.

Further: the diameter of the overflow port is larger than that of the horizontal mixed flow outlet.

The present invention provides a sewage interception system, which is characterized in that it includes any of the aforementioned sidewall type sewage interception bucket devices based on the horizontal mixed flow outlet in the underdrain. The pipelines are connected section by section through the sewage inspection well, the surface of the sewage conveying pipeline is provided with a concrete protective cover, and the bottom of the sewage interception pipeline is connected with the side wall of the sewage inspection well;

When the dry season or the rainfall intensity is small, the water volume of the horizontal mixed flow outlet is small, and the amount of sewage entering the sewage interception bucket from the horizontal mixed flow outlet is small, and the sewage will preferentially enter the sewage conveying pipeline through the sewage interception pipeline;

When the rainfall intensity is large, the water volume of the horizontal mixed flow outlet is large, and the amount of sewage entering the sewage interception bucket from the horizontal mixed flow outlet is large. At this time, a combined overflow occurs, and the sewage and the dirty initial rainwater are intercepted by the sewage interception bucket. into the sewage pipeline;

When the sewage and the dirty initial rainwater enter the sewage conveying pipe, the later stage rainwater and sewage mixture with better water quality overflows, overflows into the underdrain through the overflow port on the side of the sewage interceptor, and finally discharges directly into the water body along with the underdrain. middle.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention creates a new way of intercepting sewage under the condition that there is no sewage interception pipeline construction on both sides of the underdrain. The sewage interception device is used to intercept the sewage in the horizontal mixed flow outlet on the inner side of the underdrain, effectively solving the problems in the underdrain. The problem of serious pollution is easy to manufacture, easy to install in culverts, easy to integrate into the sewage interception system, and low cost, without electricity and without any sophisticated facilities, and basically does not require maintenance and management during use.

2. Due to the difficulties of high toxic gas content, serious aging of the structure of the underdrain, difficulty in excavating the work hole for traffic relief, and limited space in the construction of the underdrain in the high-density built-up area, it is impossible to set up an interception well inside the interception well provided by the present invention. The bucket has the advantages of simple structure, small volume and convenient assembly, which can shorten the construction time, and can be applied to the interception of sewage in the underdrain, and has strong practicability.

Description of drawings

Fig. 1 is the top view of the sewage interception system in the underdrain of the present invention;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is the structural representation of intercepting bucket;

Fig. 5 is a partial cross-sectional view of the choke bucket.

The signs in the drawings are: 1-underdrain; 2-horizontal mixed flow outlet; 3-sewage intercepting hopper; 4-sewage inspection well; 5-sewage conveying pipeline; 6-micro-expanded concrete; 7-filling material; 8- Bracket; 9-Concrete protective cover; 10-Overflow port; 11-Circle hoop; 12-First connection part; 13-Square clad concrete; 14-Sewage interception pipeline; 15-Vertical interception pipeline; 16-Horizontal section Sewage interception pipeline; 17-support pipe; 18-well cover; 19-upper cylindrical buffer space; 20-interface; 21-connection cavity; 22-input interface pipe; 23-lower conical; 24-steel wing ring.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.

As shown in Fig. 1-Fig. 5, the present invention provides a side wall type sewage interceptor device suitable for horizontal mixed flow discharge in an underdrain. A sewage interception bucket 3 is arranged on the side wall of the underdrain 1. One side is fixed with the side wall of the underdrain 1 through the first connection part 12, the first side of the sewage interception bucket 3 is provided with an input interface pipe 22, and the input interface pipe 22 is communicated with the horizontal mixed flow outlet 2, and the second side of the sewage interception bucket 3 is connected. An overflow port 10 is provided on the side, and a sewage interception pipeline 14 is connected to the lower part of the sewage interception bucket 3 through the interface 20 .

The sewage intercepting pipeline 14 includes a vertical sewage intercepting pipeline 15 connected to the bottom of the sewage intercepting bucket 3. Below the vertical sewage intercepting pipeline 15 is a horizontal sewage intercepting pipeline 16. The slope of the horizontal sewage intercepting pipeline 16 relative to the horizontal plane is 1%.

The outer side of the vertical section sewage interception pipeline 16 is fixed to the bracket 8 through a circular hoop 11, and the circular hoop 11 is made of steel bars with a diameter of 16 mm. It consists of three parts: upright pole, horizontal bracing and diagonal bracing, which must be hoisted into the culvert after welding is completed outside the culvert 1, and the materials are all angle steel.

The shape of the interceptor 3 is an upper cylindrical buffer space 19 and a lower conical 23; the input interface pipe 22 is arranged on the upper part of the first side of the upper cylindrical buffer space 19, and the overflow port 10 is arranged in the upper cylindrical buffer The upper part of the second side of the space 19, the second side is one of the side surfaces of the upper columnar buffer space 19 except the first side.

The side wall of the underdrain 1 is provided with a connecting cavity 21 formed by chiseling around the horizontal mixed flow outlet 2, the input interface pipe 22 is buried in the side wall of the connecting cavity 21, and the horizontal mixed flow outlet 2 penetrates the side of the underdrain 1. The wall is sealingly connected with the input interface pipe 22 ; the first connection part 12 is provided in the embedded section of the input interface pipe 22 ; the connection cavity 21 is filled with micro-expanded concrete 6 . The limited expansion rate of micro-expanded concrete is ≥0.025%, and the dosage of expansion agent per cubic meter of concrete is 40kg.

A steel wing ring 24 is fixed on the outer wall of the dirt intercepting bucket 3 , and there is a micro-expanded concrete 6 between the steel wing ring 24 and the connecting cavity 21 , and the steel wing ring 12 limits the dirt intercepting bucket 3 .

A joint filling material 7 is arranged between the horizontal mixed flow outlet 2 and the sewage intercepting bucket 3, and the joint filling material 7 is asphalt hemp.

A support pipe 17 is sleeved on the outer surface of the sewage interception pipe 14 , and the materials of the support pipe 17 and the sewage interception bucket 3 are galvanized steel pipes.

The diameter of the overflow port 10 is larger than that of the horizontal mixed flow outlet 2 .

In the sewage interception system provided by the present invention, the bottom of the underdrain 1 is provided with a sewage conveying pipeline 5, and the outlet end of the sewage conveying pipeline 5 is connected to the lifting pump station, so as to convey the sewage to the sewage treatment plant, and the sewage conveying pipeline 5 passes through the sewage The inspection wells 4 are connected section by section, the surface of the sewage conveying pipeline 5 is provided with a concrete protective cover 9 , and the bottom of the sewage interception pipeline 14 is communicated with the side wall of the sewage inspection well 4 ; As a whole, the top of the sewage inspection well 4 is provided with a well cover 18;

When the dry season or rainfall intensity is small, the water volume of the horizontal mixed flow outlet 2 is small, and the amount of sewage entering the sewage interceptor 3 from the horizontal mixed flow outlet 2 is small. At this time, the fullness of sewage in the sewage interception bucket 3 is small, and the sewage will It preferentially enters the sewage conveying pipeline 5 through the sewage interception pipeline 14, and finally enters the sewage treatment plant;

When the rainfall intensity is large, the water volume of the horizontal mixed flow outlet 2 is large, the amount of sewage entering the sewage interception bucket 3 from the horizontal mixed flow outlet 2 is large, and the fullness of the sewage in the sewage interception bucket 3 is also large, and a confluence occurs at this time. Control overflow, sewage and dirty initial rainwater are intercepted by sewage interceptor 3 and enter into sewage conveying pipeline 5;

When the sewage and the dirty initial rainwater enter the sewage conveying pipe 5, the later stage rainwater and sewage mixture with better water quality overflows, and flows into the underdrain 1 through the overflow port 10 on the side of the sewage interceptor 3, and finally flows with the underdrain. 1 Discharge directly into the body of water.

In implementation, the horizontal mixed flow outlet 2 is a rain-sewage confluence pipe and the diameter value is generally 200<D1≤600.

The interception bucket 3 of the present invention can adapt to the fluctuation of the sewage discharge amount of the horizontal mixed flow outlet 2, so that when the sewage discharge amount of the horizontal mixed flow outlet 2 fluctuates within a reasonable range, the sewage can be intercepted by the interception bucket 3 and discharged into the sewage conveying pipeline 5. However, after the first rain, the large flow of rain and sewage mixed flow, the water quality is relatively good, will be discharged into the underdrain through the overflow port to avoid increasing the unnecessary load of the sewage treatment plant.

In practice, the interception bucket 3 is welded by galvanized steel pipes with a wall thickness of 10 mm, the upper part is a cylindrical buffer space 19, and the overflow port 10 on the side thereof is arranged in a circular shape, in order to ensure the interception effect and avoid sewage For overflow, it is recommended that the optimal overflow port diameter is (D1+10) mm, and the lower part of the sewage interceptor 3 is conical 23 . Carry out artificial drilling around the horizontal mixed flow outlet 2 on the side wall of the underdrain 1. Note that the steel bars of the original underdrain 1 cannot be cut off during the cutting process. To prevent sewage leakage, asphalt is used in the interception bucket 3 and the horizontal mixed flow outlet 2. Fill the joints with hemp silk, and then repair the side walls of the underdrain with micro-expanded concrete 6.

避免因管径过小造成溢流严重，从而污染水体，同时避免因管径过大，导致进入污水处理厂的水量增加，加大污水处理厂的运行负荷。In implementation, the sewage interception pipe 14 is a UPVC pipe, and the outer support pipe 17 is covered. The recommended optimal diameter of the sewage interception pipe 14 is:

Avoid serious overflow caused by too small pipe diameter, thereby polluting the water body. At the same time, avoid the increase of water entering the sewage treatment plant due to the large diameter of the pipe, and increase the operating load of the sewage treatment plant.

In implementation, the sewage inspection well 4 is a concrete well, the outer wall is a rectangular setting, and the inner wall is a plastic finished circular shape, which is close to the side wall of the underdrain 1, the sewage inspection well 4 is connected to the sewage conveying pipeline 5, and the sewage conveying pipeline 5 is connected to the underdrain along the 1. Lay in parallel direction, and use concrete protective cover 9 for pouring protection on the outside. The diameter of the inner wall of the sewage inspection well 4 should be larger than that of the sewage conveying pipeline 5, and the distance between the bottom of the sewage conveying pipeline 5 and the bottom of the sewage inspection well 7 should not be greater than 10 cm.

The above embodiment is only a preferred technical solution of the present invention. Those skilled in the art should understand that the technical solutions or parameters in the embodiments can be modified or replaced without departing from the principle and essence of the present invention. should be included within the protection scope of the present invention.

Claims (9)

1. a side wall type sewage intercepting bucket device suitable for horizontal mixed flow discharge in the underdrain, is characterized in that: the underdrain (1) side wall is provided with the sewage intercepting bucket (3), and the first sewage intercepting bucket (3) is provided with the The side through the first connection part (12) is fixed with the side wall of the underdrain (1), and the first side of the sewage interception bucket (3) is provided with an input interface pipe (22), which passes through the input interface pipe (22) and the horizontal mixed flow outlet ( 2) Connected, an overflow port (10) is arranged on the second side of the sewage intercepting bucket (3), and a sewage intercepting pipeline (14) is connected to the lower part of the sewage intercepting bucket (3) through the interface (20). 2. A sidewall type sewage interceptor device suitable for a horizontal mixed flow outlet in an underdrain according to claim 1, characterized in that: the sewage interception pipeline (14) comprises a sewage interception hopper (3) at the bottom. The connected vertical section sewage interception pipeline (15) is provided with a horizontal section sewage interception pipeline (16) below the vertical section sewage interception pipeline (15). 3. A sidewall type sewage interceptor device suitable for horizontal mixed flow outlet in an underdrain according to claim 2, characterized in that: the outer side of the vertical section sewage interception pipeline (16) is fixed by a circular hoop (11). On the bracket (8), the bottom of the bracket (8) and the horizontal section sewage interception pipeline (16) are fixed by the square-wrapped concrete (13). 4. A sidewall type dirt interceptor device suitable for horizontal mixed flow outlet in an underdrain according to claim 1, characterized in that: the shape of the dirt interceptor (3) is an upper cylindrical buffer space (19) , the lower conical shape (23); the input interface pipe (22) is arranged on the upper part of the first side of the upper cylindrical buffer space (19), and the overflow port (10) is arranged on the second side of the upper cylindrical buffer space (19) The upper part of the side, the second side is one of the side surfaces of the upper cylindrical buffer space (19) except the first side. 5. A side wall type sewage interceptor device suitable for horizontal mixed flow outlet in an underdrain according to claim 1, characterized in that: the side wall of the underdrain (1) is provided around the horizontal mixed flow outlet (2). There is a connecting cavity (21) formed by chiseling, the input interface pipe (22) is buried in the side wall of the connecting cavity (21), and the horizontal mixed flow outlet (2) penetrates the side wall of the underdrain (1) and the input interface The pipe (22) is sealed and connected; the first connection part (12) is provided in the embedded section of the input interface pipe (22); the connection cavity (21) is filled with micro-expanded concrete (6). 6. A sidewall type sewage interceptor device suitable for a horizontal mixed flow outlet in an underdrain according to claim 1, characterized in that: between the horizontal mixed flow outlet (2) and the sewage interception bucket (3) A caulking material (7) is provided. 7. A sidewall type sewage interceptor device suitable for horizontal mixed flow outlet in an underdrain according to claim 1, characterized in that: the outer surface of the sewage interception pipeline (14) is sleeved with a support pipe (17) . 8. A sidewall type sewage interceptor device suitable for a horizontal mixed flow outlet in an underdrain according to claim 1, characterized in that: the diameter of the overflow outlet (10) is larger than that of the horizontal mixed flow outlet (2) caliber. 9. A sewage interception system, characterized in that it comprises the sidewall type sewage intercepting bucket device according to any one of claims 1-8, and the bottom of the underdrain (1) is provided with a sewage conveying pipe (5), which conveys sewage. The pipeline (5) is connected section by section through the sewage inspection well (4), the surface of the sewage conveying pipeline (5) is provided with a concrete protective cover (9), and the bottom of the sewage interception pipeline (14) is communicated with the side wall of the sewage inspection well (4); The square-wrapped concrete (13) protecting the sewage interception pipeline (14) and the concrete protective cover (9) are poured into one body; When the dry season or the rainfall intensity is low, the water volume of the horizontal mixed flow outlet (2) is small, the amount of sewage entering the sewage interception bucket (3) from the horizontal mixed flow outlet (2) is small, and the sewage will preferentially pass through the sewage interception pipe (14) into the sewage pipeline (5); When the rainfall intensity is large, the amount of water in the horizontal mixed flow outlet (2) is large, and the amount of sewage entering the sewage interception bucket (3) from the horizontal mixed flow outlet (2) is large. The dirty initial rainwater is intercepted by the sewage intercepting bucket (3) and enters the sewage conveying pipeline (5); When the sewage and the dirty initial rainwater enter the sewage conveying pipe (5), the later rainwater and sewage mixture with better water quality overflows, and flows into the underdrain through the overflow port (10) on the side of the sewage interceptor (3). (1), and finally discharged directly into the water body along with the culvert (1).

Images