A facility for intercepting sewage in a river or creek
By setting up small square wells and installing main sewage interception pipes on the banks of rivers and canals, the problems of blockage and difficult maintenance of traditional river and canal sewage interception facilities have been solved, achieving convenient and efficient construction and low-cost pipeline maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOHYDRO BUREAU 11 CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-16
AI Technical Summary
Traditional sewage interception facilities in rivers and canals are prone to clogging, and the placement of inspection wells on rivers and canals makes maintenance difficult and costly.
Small square wells are installed on the banks of the river, with grates to intercept fecal solids. Sewage flows into the main interceptor pipe through a connecting pipe. The main pipe is installed on pine stakes by hanging pipes. Inspection wells are located on the bank for easy maintenance.
It reduces the risk of blockage in the main sewer interceptor, simplifies pipeline maintenance, and lowers construction and maintenance costs.
Smart Images
Figure CN224363414U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of municipal sewage treatment, and more particularly to a facility for intercepting sewage in a river. BACKGROUND
[0002] In municipal engineering, houses are densely distributed along the river of the city, and there are a large number of direct discharge outlets. Direct discharge leads to serious pollution of the river, and an effective method is to set up sewage interception facilities at the river.
[0003] The traditional sewage interception system is to set up a sewage interception main pipe along the river, which is enclosed by concrete or erected by setting up a support pier. An inspection well is usually set up every 30m, and the sewage outlet on the bank is directly connected to the inspection well to collect sewage.
[0004] The main problems of this type of sewage interception system are:
[0005] 1. Most of the direct discharge outlets do not pass through septic tanks, and there are a large number of fecal solids, which are easy to block the main pipe.
[0006] 2. The inspection well is arranged on the river, which is difficult to maintain, and the weight of the inspection well is large, and the cost of processing on the deep silt layer foundation is too high.
[0007] In order to solve the problems of limited space for constructing sewage interception facilities along the river, difficulty in burying the pipe, and difficulty in maintenance, a new facility for intercepting sewage in the river is needed to improve the construction efficiency and make the maintenance relatively convenient. CONTENT OF THE UTILITY MODEL
[0008] The utility model aims at the deficiencies of the prior art, and provides a facility for intercepting sewage in a river, which is fast and efficient in construction, not easy to block the pipe, and convenient to maintain.
[0009] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of: a facility for intercepting sewage in a river, comprising a sewage interception main pipe, a plurality of small square wells, a plurality of connecting pipes and a plurality of household sewage pipes;
[0010] The small square well is arranged on the bank of the river, one end of the small square well is provided with a sewage inlet for connecting at least one household sewage pipe, the other end of the small square well is provided with a sewage outlet for connecting the connecting pipe, and a grid is arranged in the small square well to separate the sewage inlet and the sewage outlet.
[0011] A plurality of connecting pipes are connected to the sewage interception main pipe at different positions, and an inspection well is arranged at the connection between the sewage interception main pipe and each connecting pipe.
[0012] Preferably, the inspection well is located on the bank.
[0013] Preferably, the main sewage interceptor is installed by hanging a pipe over the river.
[0014] Preferably, pine stakes are driven into the riverbank, with the bottom of the pine stakes extending below the riverbed elevation line, and the main sewage interceptor is mounted on the top of the pine stakes.
[0015] Preferably, the upper part of the pine pile, extending beyond the water level, is fitted with a steel pipe sleeve.
[0016] Preferably, the main interceptor pipe is a DN200 galvanized steel pipe, and the sections of the main interceptor pipe are connected by flanges. The sealing surface of the flange connection is coated with lead oil for sealing. The main interceptor pipe is installed on the top of the pine pile by steel reinforcement clamps.
[0017] Preferably, the inlet of the small square well is set higher than the outlet.
[0018] Preferably, the surface of the small square well is constructed of solid concrete bricks with a thickness of ≥150mm, and the bottom of the small square well is provided with a crushed stone pad layer and a concrete pouring base slab from bottom to top.
[0019] Preferably, the inner and outer surfaces of the small square well are provided with a mortar plaster layer with a thickness of ≥10mm.
[0020] Preferably, the grating is made of fiberglass, the grating is located on the side near the sewage outlet, and a manhole cover is installed on the top of the small square well.
[0021] This utility model has substantial features and advancements compared to existing technologies. Specifically, it changes the traditional concept of setting up main sewage interception pipes. For river areas with numerous houses, several small square wells are pre-installed on the bank. The houses on the riverbank are divided into several groups according to their geographical location, and each group is connected to a nearby small square well. The small square wells are equipped with grates to intercept fecal solids. The filtered sewage is collected from the connecting pipe into the main sewage interception pipe, which is then connected to the municipal pipe network for unified management. This can significantly reduce the sewage interception pressure on the main sewage interception pipe. The entire sewage interception facility is constructed on the bank, which is convenient, efficient, and less prone to pipe blockage.
[0022] Staff need to regularly inspect and dredge the small square wells on the bank to prevent blockages. Compared with the traditional solution of setting up a sewage interception system in the river channel, the management and maintenance pressure is distributed and the management and maintenance difficulty is lower. Attached Figure Description
[0023] Figure 1 This is a general schematic diagram of a facility for intercepting sewage in rivers and canals according to this utility model.
[0024] Figure 2 This is a plan view of a small square well used in a sewage interception facility for rivers and canals, as described in this utility model.
[0025] Figure 3 This is an elevation view of a small square well in a facility for intercepting sewage in rivers and canals, which is part of this utility model.
[0026] Figure 4 This is a diagram showing the arrangement of pine piles in a facility for intercepting sewage in a river channel, as described in this utility model.
[0027] In the diagram: 1. Intercepting main pipe; 2. Small square well; 3. Connecting pipe; 4. Outlet sewage pipe; 5. River / channel; 11. Pine stake; 12. Steel pipe sleeve; 21. Sewage inlet; 22. Sewage outlet; 23. Bar screen. Detailed Implementation
[0028] The technical solution of this utility model will be further described in detail below through specific embodiments.
[0029] like Figures 1-4 As shown, a facility for intercepting sewage in rivers and canals includes a main sewage interception pipe 1, several small square wells 2, several connecting pipes 3, and several sewage outlet pipes 4.
[0030] The small square well 2 is set on the bank of the river 5. One end of the small square well 2 is provided with a sewage inlet 21 for connecting at least one sewage pipe 4. The other end of the small square well 2 is provided with a sewage outlet 22 for connecting a connecting pipe 3. A grid 23 is provided in the small square well 2 to isolate the sewage inlet 21 and the sewage outlet 22.
[0031] Several connecting pipes 3 are connected to the main sewage interception pipe 1 at different locations. Inspection wells are provided at the connection points between the main sewage interception pipe 1 and each connecting pipe 3. The inspection wells are located on the shore and are used for maintenance of the connection points.
[0032] In this embodiment, the main sewage interception pipe 1 is set up according to the distribution direction of the upstream and downstream of the river. According to the distribution of buildings on the bank, several small square wells are set up along the upstream and downstream direction. Each small square well is responsible for connecting to the sewage outlet pipe 4 of a certain area. Each sewage outlet pipe 4 is then connected to the main sewage interception pipe 1 to achieve diversion.
[0033] The sewage discharged from the sewage pipe 4 includes a mixture of fecal solids and sewage containing household waste. This waste first flows into the small square well 2, where the fecal solids are intercepted by the screen 23, and the sewage flows into the intercepting main pipe 1 through the connecting pipe 3.
[0034] The inlet 21 of the small square well 2 is set higher than the outlet 22. To ensure the structural strength of the small square well, the well surface of the small square well 2 is constructed with solid concrete bricks with a thickness of ≥150mm. The bottom of the small square well is provided with a crushed stone pad and a concrete pouring base slab from bottom to top. The inner and outer sides of the well are provided with a mortar plaster layer with a thickness of ≥10mm.
[0035] The grating 23 is made of fiberglass and is located near the sewage outlet. The top of the small square well is covered with a well cover for routine inspections, maintenance, and dredging.
[0036] The main sewage interceptor 1 is installed by hanging a pipe on the river channel. Specifically, in this embodiment, pine stakes 11 are driven into the river channel. The bottom of the pine stakes 11 extends below the bottom elevation line of the channel. The pine stakes are selected with a length greater than 6m and a tail diameter of about 120mm. The upper part of the pine stakes 11, which extends beyond the water level line, is fitted with a steel pipe sleeve 12. The main sewage interceptor 1 is a DN200 galvanized steel pipe. The sections of the main sewage interceptor 1 are connected by flanges. The sealing surface of the flange connection is coated with lead oil for sealing.
[0037] The main sewage interceptor 1 is fixed to the top of the pine pile with steel bars to achieve the pipe hanging connection.
[0038] The main sewage interceptor 1 is then connected to the municipal pipeline network via a booster pump station.
[0039] This plan was tested in the downstream remediation project of Zhuwu Canal in Xiangzhou District. Zhuwu Canal, located in the middle section of Guangchang Community, flows through the natural villages of Zhuwu, Danshui, Qichang, and Guandian. Running north-south, it extends 1.6 kilometers from Zhuwu and Danshui in the south to the Qichang sluice gate in the north. Zhuwu Canal suffers from prominent problems such as illegal occupation and construction, illegal enclosure and blockage, and illegal dumping and discharge, resulting in severe pollution of the canal water quality from direct sewage discharge, domestic waste, and livestock and poultry waste. To address the problem of direct sewage discharge from Zhuwu Canal, this remediation project, in conjunction with the distribution of newly built sewage pumping stations, constructs DN200 interceptor sewer pipes along the river. All sewage from direct discharge points in Zhuwu Canal will be collected and pumped to four sewage lifting pumping stations, ultimately being transferred to the existing DN400 main sewage pipe on Zhuhai Avenue.
[0040] The system connects direct discharge outlets along the riverbank to a sewage interception system via small square wells and connecting pipes. Since its completion, the system has been operating well, and the river water quality has significantly improved. This system moves the small square wells to the bank for easier maintenance, and provides inspection ports at the main pipe connection for unblocking clogs. Routine maintenance only requires periodic cleaning of the small square wells, solving the inconvenience of maintenance associated with traditional methods that placed inspection wells on the riverbank. This significantly reduces maintenance costs.
[0041] Finally, it should be noted that: the preferred embodiments of this patent have been described in detail above, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.
Claims
1. A facility for intercepting sewage in rivers and canals, characterized in that: It includes the main sewage interception pipe, several small square wells, several connecting pipes, and several sewage outlet pipes; The small square well is set on the bank of the river. One end of the small square well is provided with a sewage inlet for connecting at least one sewage pipe to the household. The other end of the small square well is provided with a sewage outlet for connecting a connecting pipe. A screen is set in the small square well to isolate the sewage inlet and the sewage outlet. Several connecting pipes are connected to the main sewage interception pipe at different locations, and inspection wells are provided at the connection points between the main sewage interception pipe and each connecting pipe.
2. The facility for intercepting sewage in rivers and canals according to claim 1, characterized in that: The inspection well is located on the shore.
3. The facility for intercepting sewage in rivers and canals according to claim 2, characterized in that: The main sewage interceptor is installed by hanging a pipe over the river.
4. The facility for intercepting sewage in rivers and canals according to claim 3, characterized in that: Pine stakes are driven into the riverbank, with the bottom of the stakes extending below the riverbed elevation line, and the main sewage interceptor is attached to the top of the stakes.
5. The facility for intercepting sewage in rivers and canals according to claim 4, characterized in that: The upper part of the pine pile, extending beyond the waterline, is fitted with a steel pipe sleeve.
6. The facility for intercepting sewage in rivers and canals according to claim 5, characterized in that: The main interceptor pipe is a DN200 galvanized steel pipe. The sections of the main interceptor pipe are connected by flanges. The sealing surfaces of the flanges are coated with lead oil for sealing. The main interceptor pipe is installed on the top of the pine pile by steel reinforcement clamps.
7. The facility for intercepting sewage in rivers and canals according to any one of claims 1-6, characterized in that: The inlet of the small square well is set higher than the outlet.
8. The facility for intercepting sewage in rivers and canals according to claim 7, characterized in that: The surface of the small square well is constructed of solid concrete bricks with a thickness of ≥150mm. The bottom of the small square well is provided with a crushed stone pad layer and a concrete pouring base slab from bottom to top.
9. The facility for intercepting sewage in rivers and canals according to claim 8, characterized in that: The inner and outer surfaces of the small square well are all covered with a mortar plaster layer with a thickness of ≥10mm.
10. The facility for intercepting sewage in rivers and canals according to claim 9, characterized in that: The grating is made of fiberglass and is located on the side near the sewage outlet. A manhole cover is installed on the top of the small square well.