Multi-stage series landscape ecological pond integrating functions of nitrogen and phosphorus removal, reclamation and reuse of sewage

Abstract

The invention provides a sewage deep treatment ecological technology comprising an anoxic deep pond, a filtering barrier, a landscape ecological pond and a terminal purification pond which are sequentially connected. The technology can lead the water quality of outlet water after treatment to achieve the water quality standard for multi-objective reuse and simultaneously provide an artificial landscape water body which meets the environmental aesthetic value by strengthening energy-saving reoxygenation, lichenism, aquatic animal and plant resources, a food chain and other mechanisms of a multi-stage series pond system and carrying out further nitrogen and phosphorus removal and reclamation treatment on urban secondary outlet water.

Description

technical field [0001] The invention relates to an ecological engineering method for advanced treatment of urban secondary effluent by a landscape water type artificially reinforced ecological barrier, belonging to the technical field of water treatment. Background technique [0002] With the rapid development of the economy, people's requirements for the degree of sewage treatment are also increasing. There is still a large gap between the secondary effluent of cities that meet the discharge standards and the receiving water body. If the secondary effluent is directly discharged into the receiving water body, it will not only pollute the receiving water body, but also weaken the water body. Self-cleaning ability. In order to make up for the water quality gap between the urban secondary effluent and the natural water body to achieve the protection effect on the natural water body, it is generally necessary to add a third level of treatment after the traditional secondary tr...

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Problems solved by technology

However, this process is added after the secondary treatment process for advanced treatment. The treatment process is relatively cumbersome, the floor area is increased, and the process produces a lot of sludge and energy consumption is relatively high.

[0004] ②Membrane separation technology is used for advanced treatment, and the effluent water quality is good, but the operation cost is expensive and the energy consumption is large

[0009] Ecological ponds are usually used as secondary treatment of sewage, and are rarely used for advanced treatment of sewage at present. Traditional ecological pond design and operating parameters are not suitable for advanced treatment, and further strengthening of nitrogen, phosphorus and other pollutants is required. At the same time, comprehensive ecological benefits and environmental aesthetic effects should be formed

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