Village and urban community landscape water body purification system

Abstract

The invention discloses a village and urban community landscape water body purification system. The system comprises a trench revetment, a sewage interception fence device, a sewage suction and drainage system, a rectification fence, a combined biological filler porous mesh cage, an aeration device, a water impeller and a landscape system. Terrestrial surface runoff sewage intercepted by the system and concentrated water led out from the bottom layer of a water body can continuously flow through a porous mesh cage biological filler continuum in the trench revetment water body purification system in a horizontal plug flow mode to be purified in the contact process with a surface biological membrane, and purified tail water automatically flows into the water body to serve as ecological supplementary water. Gravels or other solid biological fillers can be filled in a hollow pit of a groove revetment concrete prefabricated member revetment body to plant aquatic plants, and a trestle or a hydrophilic platform can be erected above the groove revetment solid concrete prefabricated member revetment body to form a landscape system together with the aquatic plants. The trench revetment waterbody purification system is flexible and changeable to implement and is easy to coordinate with the landscape environment around the water body.

Description

technical field [0001] The invention relates to the technical field of water environment treatment, and more specifically relates to a landscape water purification system for villages and urban communities. Background technique [0002] Water is an important natural resource, economic resource, social resource and ecological basic element for urban development, and plays an important role in maintaining urban ecological functions, security and stability. In the process of rapid urbanization and industrialization, due to the serious lag of urban infrastructure construction, some urban rivers have become the main channels for centralized sewage discharge of industrial wastewater, domestic sewage and farmland backwater. The pollutant discharge volume is large and the spatial distribution is concentrated. If the ratio is high, the self-purification ability of the water body is weak, and it is easy to cause hypoxia and eutrophication, forming black and odorous water bodies. Urba...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned river restoration technology has gradually shown some limitations in the application process: the aeration and reoxygenation technology itself cannot remove pollutants, and it needs to be combined with enhanced biological treatment technology to play a purifying and repairing role by relying on the adsorption and degradation capabilities of microorganisms. Reoxygenation techniques are often not synergistically combined with efficient biological treatment techniques, so aerated reoxygenation techniques are used with limited effectiveness

Ecological floating islands rely on plant roots to intercept and absorb pollutants, and their treatment efficiency is low and affected by seasons. Pollutants in water cannot be effectively treated in seasons when aquatic plant biomass grows slowly.

Due to the rapid consumption of dissolved oxygen in the local water body, the biofilm repair technology cannot be replenished in time, and the oxygen content is insufficient, which affects the quality of the microbial film. Contact time, resulting in lower processing efficiency

The sediment solidification technology uses chemicals to fix the pollutants in the sediment, which does not effectively degrade the pollutants. Under the influence of temperature changes and water volume changes, the deposited sediment will appear muddy, making Deposited pollutants re-enter the water body, aggravating the degree of pollution

[0006] To sum up, these methods have many shortcomings such as large area, high project investment, poor process adaptability, low facility reliability, unstable purification effect, easy to cause secondary pollution, and difficult long-term maintenance and management of water quality.

These deficiencies all affect and limit the effect of water environment quality maintenance and water environment management in villages and cities