Biological drainage treatment device

Abstract

The invention provides a biological drainage treatment device. The biological drainage treatment device comprises a device body provided with a filter unit. The device body comprises a frame provided with an accommodating cavity. The filter unit is arranged in the accommodating cavity. The filter unit includes a first filter unit filled with volcanic-rock filter materials. The biological drainage treatment device has the advantages that the defect that a traditional biological treatment device is low in pollution load is overcome; the first filter unit is filled with the volcanic-rock filter materials which are good in a biochemical stability, resistant to corrosion, high in absorption quantity and fast in absorption; aquatic plants planted on a second filter unit, algae in a third filter unit and a microbial-symbiosis biological dynamic regulating system in a fourth unit allow the plants and microorganisms to be coordinated, sewage purification load capacity is strengthened, and the biological drainage treatment device is high in industrial value.

Description

technical field [0001] The invention relates to the technical field of water pollution control, and more specifically, relates to a biological drainage treatment device. Background technique [0002] my country's water environment is facing various pressures such as water pollution, water resource shortage, and flood disasters. Water pollution has exacerbated the shortage of water resources, and the destruction of the water ecological environment has led to frequent floods. According to the 1999 Bulletin on the State of the Environment in China, the groundwater in my country's seven major water systems, major lakes, coastal waters and some areas has been polluted to varying degrees. Rivers are dominated by organic pollution, and the main pollutants are ammonia nitrogen, biochemical oxygen demand, permanganate index, and volatile phenol; lakes are characterized by eutrophication, and the main pollution indicators are total phosphorus, total nitrogen, and chemical oxygen dema...

AI Technical Summary

Problems solved by technology

[0005] 1. In the process of urbanization, the sewage pipeline system is not perfect, the diversion of rain and sewage is not complete, and the sewage interception is not complete. With the continuous increase of sewage discharge, the sewage treatment capacity has not increased synchronously, causing urban water bodies to become pollutants in disguise. And beyond its self-purification capacity, the water quality is getting worse

[0006] 2. The ecological water system has been completely destroyed. To restore the self-purification ability of the river, it is necessary to carry out ecological restoration and reconstruction

[0007] 3. Urban river gushing water itself has the characteristics of small catchment area, less exchanged water volume and weak regulation ability, and because the water body is closely connected with the surrounding residential environment, the risk of pollution is high, the ecosystem is fragile, and pollution is prone to occur

[0008] 4. The sewage outlet of the ditch is connected to the urban rainwater discharge, and the pollution generated in the initial stage of rainwater washing will lead to river pollution

The current chemical method is expensive to treat, and the overall processing equipment is relatively large

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