Combined high-efficiency river water quality purification process

Abstract

The invention provides a combined high-efficiency river water quality purification process, which comprises the following steps of: purifying the water quality in rivers by simultaneously adopting an immersed biological filter bed and a microbial method, establishing an aquatic plant floating island and stocking filter-feeding fishes and zoobenthos. In the process, the water quality is purified by fully utilizing microorganisms, aquatic plants and animals in a system, the living conditions of aquatic organisms in the rivers are improved and simultaneously the effect of optimizing landscape is achieved.

Description

technical field [0001] The invention belongs to the field of ecological restoration of water environment, and in particular relates to a water purification process, in particular to a combined high-efficiency river water purification process. Background technique [0002] With the development of industrialization and the improvement of people's material living standards, the discharge of a large amount of industrial wastewater and domestic sewage has caused varying degrees of pollution to the water environment. Eutrophication of water bodies is currently a national water environment problem. Therefore, rivers and lakes The water purification of reservoirs has also become a research hotspot in recent years. [0003] The biofilm method refers to making the microbial population attach to the surface of some carriers in the form of a film. Through contact with sewage, the microorganisms on the biofilm absorb the organic matter in the sewage as nutrients and assimilate it, thereb...

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Problems solved by technology

The submerged biological filter bed is one of the main process forms of the biofilm method. It has the characteristics of less investment in infrastructure, low energy consumption and operating costs, simple operation, and easy maintenance. and other substances have a good removal effect, but the phosphorus removal effect is poor, and other methods need to be combined to purify the water quality

[0004] The biological bacterial agent method uses biological bacterial agents to purify water. The biological bacterial agents contain various bacterial flora, enzymes that degrade pollutants and nutrients that promote microbial growth, which can accelerate the growth of microorganisms and the evolution of organisms in the process of water purification. It can promote the degradation of organic matter in water, can significantly remove pollutants such as ammonia nitrogen and phosphorus, can significantly increase dissolved oxygen in water, and improve water transparency, but it is easy to be lost in water. It also needs to be combined with other methods to purify water quality

[0005] Aquatic plant floating islands are aquatic plants cultivated on floating bodies, through the action of plants and microorganisms on roots, etc., directly absorb nutrients and other pollutants from the water body, and remove eutrophication such as nitrogen and phosphorus in the water body and reduce The content of various pollutants in the water body plays an important role in achieving the purpose of water purification. At the same time, the growth of aquatic plants and algae forms competition, inhibiting algae from photosynthesis, etc., thereby inhibiting or reducing the probability of "water blooms", but the floating island The purification effect is limited, and it has limitations for the purification effect of water bodies in deeper waters

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