Underground sewage collection system for industrial park

Abstract

The utility model discloses a buried sewage collection system for an industrial park, belongs to the technical field of sewage treatment, and solves the problems of complicated facilities and unsmooth sewage flow in overhead laying of a wastewater pipeline. An underground pipe gallery is arranged between a sewage discharge enterprise and a sewage treatment plant, a sewage pipeline of the sewage discharge enterprise is erected in the underground pipe gallery through a pipeline support, water collecting pits are arranged at the bottom of the underground pipe gallery at intervals, and inspection wells are arranged above the underground pipe gallery at intervals. Exhaust valve wells are arranged on the underground pipe gallery at intervals and connected with ventilation pipes, the ends of the ventilation pipes are located above the ground, and inspection well lids are arranged at the tops of the exhaust valve wells. A traditional waste water pipeline overhead laying mode is improved into a buried mode, the waste water pipeline is arranged in the underground pipe gallery, the problem that the pipeline is frozen in winter can be avoided, and operation cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically relating to a buried wastewater collection system for industrial parks. Background Technology

[0002] The wastewater from enterprises in industrial parks has a complex composition and varying concentrations. Effective collection of this discharged wastewater is a prerequisite for ensuring the stable operation of the park's wastewater treatment plant. To regulate enterprise wastewater discharge and prevent illegal or incomplete discharge, newly built industrial parks generally adopt a "one enterprise, one pipe, overhead laying" wastewater collection method.

[0003] This model requires the construction of an overhead support structure, resulting in a large initial investment and high requirements for pipe performance. In cold northern regions, winter icing is a concern, necessitating heat tracing and insulation measures, leading to higher operating costs. Furthermore, to ensure smooth traffic flow within the park, overhead pipes crossing roads and company entrances require elevated steel trusses, which can obstruct sewage flow. Utility Model Content

[0004] The purpose of this utility model is to provide an underground sewage collection system for industrial parks to solve the problems of complex facilities and poor sewage flow associated with overhead wastewater pipelines.

[0005] The technical solution of this utility model is: an underground sewage collection system for industrial parks, wherein an underground pipe gallery is provided between the sewage discharge enterprise and the sewage treatment plant, the sewage pipe of the sewage discharge enterprise is erected in the underground pipe gallery through pipe supports, a water collection pit is set at intervals at the bottom of the underground pipe gallery, an inspection well is set at intervals above the underground pipe gallery, an exhaust valve well is set at intervals in the underground pipe gallery, the exhaust valve well is connected to a vent pipe, the end of the vent pipe is located above the ground, and an inspection well cover is provided on the top of the exhaust valve well.

[0006] As a further improvement of this utility model, the vent pipe is connected to a deodorizing device, and the deodorizing device is connected to an external exhaust pipe.

[0007] As a further improvement of this utility model, the end of the external exhaust pipe is provided with a louvered air outlet.

[0008] As a further improvement of this utility model, a grid cover plate is provided on the top of the water collection pit.

[0009] As a further improvement of this utility model, the bottom of the underground utility tunnel slopes towards the water collection pit.

[0010] As a further improvement of this utility model, a pad is provided at the bottom of the sewage pipe, and the sewage pipe is fixed to the pipe support by pipe clamps.

[0011] As a further improvement of this utility model, the pipe support is set on the left and right side walls of the underground pipe gallery. The pipe support has multiple layers, and the sewage pipes are arranged on the pipe support from top to bottom in order of increasing pipe diameter.

[0012] As a further improvement of this utility model, lighting is provided in the underground utility tunnel, and the lighting is connected to a photovoltaic device via a cable.

[0013] As a further improvement of this utility model, a pipe vent is provided at the raised or flat section of the sewage pipe, the pipe vent is located in the vent valve well, and the pipe vent is equipped with an vent valve; at low points in the sewage pipe, a drain pipe is provided at intervals, and the drain pipe is equipped with a drain valve.

[0014] As a further improvement of this utility model, maintenance valves are installed at intervals in the sewage pipeline; expansion joints are installed at intervals in the sewage pipeline.

[0015] The beneficial effects of this utility model are as follows: This utility model improves upon the traditional overhead laying method of wastewater pipelines by burying them underground. By placing the wastewater pipelines within an underground utility tunnel, the problem of pipeline freezing in winter can be avoided, reducing operating costs. The wastewater pipelines are laid in the underground utility tunnel using pipe supports to prevent water immersion, and the multi-layered laying method minimizes the footprint and maximizes the utilization of underground space. This utility model incorporates a sump pit within the underground utility tunnel. On one hand, in the event of a leak, the wastewater can be collected and treated in the sump pit. On the other hand, during accident repairs, the wastewater discharged from the pipeline can be collected and treated in the sump pit. This utility model also includes an inspection well and vent pipe within the underground utility tunnel for convenient personnel inspection and maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is the internal plan layout of the underground utility tunnel in this utility model;

[0018] Figure 3 This is a schematic diagram of the pipe support structure in this utility model;

[0019] Figure 4 This is a schematic diagram of the drain pipe in this utility model.

[0020] In the diagram: 1 is an underground utility tunnel; 1-1 is an exhaust valve well; 1-2 is a vent pipe; 2 is a sewage pipe; 3 is a pipe support; 3-1 is a pipe clamp; 3-2 is a pad; 4 is a pipe exhaust pipe; 4-1 is an exhaust valve; 5 is an expansion joint; 6 is a maintenance valve; 8 is a drain pipe; 8-1 is a drain valve; 9 is a photovoltaic device; 9-1 is a cable; 10 is a lighting fixture; 11 is a deodorization device; 11-1 is an external exhaust pipe; 11-2 is a louvered air outlet; 12 is an inspection well; 13 is a sump pit; 14 is a grating cover. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1-4 As shown, an underground sewage collection system for an industrial park includes an underground pipe gallery 1 between the discharging enterprise and the sewage treatment plant. The sewage pipe 2 of the discharging enterprise is installed in the underground pipe gallery 1 through pipe supports 3. At regular intervals, a sump pit 13 is set at the bottom of the underground pipe gallery 1. An inspection well 12 is set every 50-100m above the underground pipe gallery 1. The inspection well 12 is equipped with a lockable manhole cover. An exhaust valve well 1-1 is set every 500m in the underground pipe gallery 1. The exhaust valve well 1-1 is connected to a vent pipe 1-2. The end of the vent pipe 1-2 is located above the ground. An inspection well cover is set on the top of the exhaust valve well 1-1.

[0023] Ventilation pipe 1-2 is connected to deodorization device 11, and deodorization device 11 is connected to external exhaust pipe 11-1.

[0024] The external exhaust pipe 11-1 is led to a position 3m above the ground, and the end is equipped with a rainproof louvered air outlet 11-2 and a toxic and harmful gas alarm device.

[0025] The top of the water collection pit 13 is equipped with a hot-dip galvanized steel grating cover 14.

[0026] The bottom of the underground utility tunnel 1 slopes toward the sump pit 13 at a gradient of not less than 2‰.

[0027] The bottom of the sewage pipe 2 is equipped with a rubber pad 3-2, and the sewage pipe 2 is fixed to the pipe support 3 by pipe clamp 3-1.

[0028] Pipe supports 3 are installed on the left and right side walls of the underground pipe gallery 1. Pipe supports 3 have multiple layers. Sewage pipes 2 are arranged on pipe supports 3 from top to bottom in order of increasing pipe diameter.

[0029] The underground utility tunnel 1 is equipped with lighting fixtures 10, which are connected to a photovoltaic device 9 via cable 9-1. The lighting fixtures 10 are powered by the photovoltaic device 9.

[0030] A vent pipe 4 is installed at the raised or flat section of the sewage pipe 2. The vent pipe 4 is located in the vent valve well 1-1 and is equipped with an vent valve 4-1. Drain pipes 8 are installed at intervals at the low-lying sections of the sewage pipe 2 and are equipped with drain valves 8-1.

[0031] The sewage pipeline 2 is equipped with maintenance valves 6 every 1000m to meet maintenance needs under accident conditions; the sewage pipeline 2 is equipped with expansion joints 5 every 200~300m to buffer the thermal expansion and contraction, settlement deformation and vibration of the sewage pipeline 2.

[0032] The top of the underground utility tunnel 1 is located below the local frost line, and it is laid under the green belt or sidewalk near the sewage discharge outlets of enterprises in the park, extending from the sewage discharge enterprises to the park's sewage treatment plant. Sewage pipes 2 are installed on both sides of the underground utility tunnel 1, with a reserved inspection passage in the middle; the inspection passage is not less than 1 meter wide and the clearance is not less than 2 meters to meet the needs of personnel passage.

[0033] Wastewater pipeline 2 adopts a one-enterprise-one-pipe wastewater collection model, with each dedicated pipe connected to a single or multiple sewage discharge enterprises of the same type, allowing for staggered discharge times and effectively monitoring the illegal discharge and leakage behaviors of enterprises in the park.

[0034] The base slab and side walls of the underground utility tunnel 1 are constructed of cast-in-place reinforced concrete, while the top slab can be a precast concrete cover. The area above the top slab can be a green belt or sidewalk. Sewage pipes 2 are made of corrosion-resistant plastic pipes, with the pipe diameter determined based on the company's drainage volume, generally DN50~DN200. Companies of the same type can share a single pipe for staggered discharge. Pipe supports 3 can be made of steel or cast iron, with a spacing of 0.3~0.5 meters between each layer. Each pipe support 3 can accommodate 2~4 sewage pipes 2 arranged side-by-side.

[0035] The exhaust valve well 1-1 transports the odorous gas to the deodorization equipment 11 for treatment through the vent pipe 1-2, and then discharges it through the external exhaust pipe 11-1, thus preventing the toxic and harmful gases in the sewage pipe 2 from being directly discharged into the atmosphere and polluting the environment.

[0036] During accident repairs, maintenance valve 6 is closed, and drain valve 8 is opened to drain the sewage in sewage pipe 2 into collection pit 13. The wastewater in collection pit 13 can be pumped by tanker truck and sent to the industrial park's sewage treatment plant for disposal.

Claims

1. An industrial park buried sewage collection system, characterized in that: An underground pipe gallery (1) is arranged between a sewage discharge enterprise and a sewage treatment plant, a sewage pipeline (2) of the sewage discharge enterprise is arranged in the underground pipe gallery (1) through a pipeline support (3), a water collecting pit (13) is arranged at the bottom of the underground pipe gallery (1) at intervals, a patrol well (12) is arranged above the underground pipe gallery (1) at intervals, an exhaust valve well (1-1) is arranged in the underground pipe gallery (1) at intervals, the exhaust valve well (1-1) is connected with a vent pipe (1-2), the vent pipe (1-2) is arranged above the ground, and a patrol well cover is arranged at the top of the exhaust valve well (1-1).

2. An industrial park buried sewage collection system according to claim 1, characterized in that: The vent pipe (1-2) is connected with a deodorization device (11), and the deodorization device (11) is connected with an external exhaust pipe (11-1).

3. An industrial park buried sewage collection system according to claim 2, characterized in that: The external exhaust pipe (11-1) is provided with a louvered air outlet (11-2) at the end.

4. An industrial park buried sewage collection system according to any one of claims 1-3, characterized in that: The water collecting pit (13) is provided with a grating cover plate (14) at the top.

5. An industrial park buried sewage collection system according to claim 4, characterized in that: The bottom of the underground pipe gallery (1) is inclined to the water collecting pit (13).

6. An industrial park buried sewage collection system according to claim 5, characterized in that: The sewage pipeline (2) is provided with a cushion block (3-2) at the bottom, and the sewage pipeline (2) is fixed on the pipeline support (3) through a pipe clamp (3-1).

7. An industrial park buried sewage collection system according to claim 6, characterized in that: The pipeline support (3) is arranged on the left and right side walls of the underground pipe gallery (1), the pipeline support (3) is provided with multiple layers, and the sewage pipeline (2) is arranged on the pipeline support (3) from top to bottom in the order of pipe diameter from small to large.

8. An industrial park buried sewage collection system according to claim 7, characterized in that: The underground pipe gallery (1) is provided with a lighting lamp (10), and the lighting lamp (10) is connected with a photovoltaic device (9) through a cable (9-1).

9. An industrial park buried sewage collection system according to claim 8, characterized in that: A pipeline exhaust pipe (4) is arranged at the raised position or gentle section of the sewage pipeline (2), the pipeline exhaust pipe (4) is arranged in the exhaust valve well (1-1), and an exhaust valve (4-1) is arranged on the pipeline exhaust pipe (4); a drain pipe (8) is arranged at the low-lying position of the sewage pipeline (2) at intervals, and a drain valve (8-1) is arranged on the drain pipe (8).

10. An industrial park buried sewage collection system according to claim 9, characterized in that: The sewage pipeline (2) is provided with a maintenance valve (6) at intervals; and the sewage pipeline (2) is provided with an expansion joint (5) at intervals.

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