Green rainwater collection and sewage interception system for building districts

Abstract

The invention discloses a green rainwater collection and sewage interception system for building districts, which comprises a plurality of subsystems which are serially connected and arranged in a low-altitude greenbelt in a district. Each subsystem comprises a sewage interception infiltration subsystem and route infiltration drainage subsystem. Rainwater flowing in the system is subjected to accumulation, storage, infiltration, detaining and energy dissipation, and amount of thermal rainwater discharge is reduced greatly. When permeating a permeable filling layer, a water-holding garden planting soil layer, a filling layer of the water-holding garden planting soil layer, a filling layer of a filling well and the like outside the system, the rainwater is adsorbed, infiltrated and held, and pollutant carried by the rainwater is removed effectively. Amount and quality of collected water are controlled at the terminal of the system, and the terminal rainwater can be collected for reuse or drained into a municipal rainwater network. In addition, flowing time of the rainwater in drainage is prolonged, urban rainwater flood peaks can be lowered, urban living environment can be beautified, and natural hydrographic cycle balance can be maintained.

Description

technical field [0001] The invention belongs to the technical fields of municipal engineering and environmental protection, and in particular relates to a rainwater collection and interception system for a green building community. Background technique [0002] Rainwater is an important link in the urban water cycle and regional water cycle system, and plays an extremely critical role in regulating and supplementing regional water resources and improving the ecological environment. China is currently in the stage of rapid urbanization. With the improvement of urbanization level and rapid economic development, the problem of urban rainwater is becoming more and more prominent. The main manifestations are: serious pollution of rainwater runoff; increased risk of urban flood disasters; massive loss of rainwater resources; serious damage to the urban ecological environment, etc. Many of the planning and design of urban drainage systems in our country still only stay on how to d...

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Problems solved by technology

The application of storm runoff control in my country is still limited to some areas of the city, and the scope of application is small, and the application level of planning and design tools supported by advanced technology is low or not applied, resulting in the effect of engineering application is not obvious

At the level of urban planning, there is no specific urban storm runoff management plan aimed at flood control, water quality protection, and landscape comprehensive effects, and comprehensive control of storm runoff is rarely considered in urban master planning

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