Biological contact oxidation and artificial wetland combined treatment system for grey water of residential area

Abstract

The invention relates to a biological contact oxidation and artificial wetland bioecological combined treatment system for the grey water of a residential area. The system consists of a biological contact oxidation pre-treatment device and an artificial wetland post-treatment device. The system treats the grey water of the residential area and recycles the treated water as the water for landscapes of environment-friendly buildings by using biological contact oxidation and artificial wetland combined technology as the technical core; and the water quality of the outlet water reaches the restrictive control index TN of the standard for landscape recycled water. For the grey water of the residential areas of different concentrations, the system can meet the requirements of the landscape recycling standard on the outlet water by adjusting the operating mode of the combined technology: an intermittent operating mode is used for the grey water of the residential areas of high pollution concentration; a continuous aeration operating mode of low gas-water ratio is used for the grey water of the residential areas of low pollution concentration; the treated grey water can be used as the water for the landscapes of the environment-friendly buildings; and the system has a simple structure and low operating cost and is a practical and feasible technical system for the treatment of the grey water of the residential areas suitable for the conditions of China.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a combined treatment system of biological contact oxidation and artificial wetland for gray water treatment in a residential area. Background technique [0002] In recent years, with the development of my country's urbanization and the improvement of residents' living standards, on the one hand, the cost of sewer pipe network laying for centralized sewage treatment has increased, making it a common practice to establish decentralized sewage treatment devices in newly built communities and reuse treated water on site. It is an important means, and it has very good social, economic and environmental benefits; on the other hand, the corresponding improvement of people's living environment requirements makes the waterscape of the community gradually become an important part of the green building community, and the waterscape residence is also more and more popular....

AI Technical Summary

Problems solved by technology

[0009] The present invention aims at the problems existing in the gray water treatment method and system for green building landscape reuse in the existing community, as well as the inapplicability to my country’s national conditions, and proposes a combination of biological contact oxidation and artificial wetland for gray water treatment in the community. The treatment system realizes the optimal combination of biological and ecological joint regulation and control through load matching, effectively and stably treats the gray water in the community and uses it as green building landscape reuse water, which can not only maximize the treatment potential of the constructed wetland, but also meet the requirements of the corresponding biological contact oxidation pool. Optimum working conditions, while reducing the energy consumption of the biological contact oxidation tank, realizing the joint regulation of biological ecological water quality and water quantity of the biological contact oxidation method + artificial wetland, the treatment effect is less affected by the water quality, the system is simple, and the operating cost is low

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