Comprehensive treatment method of landscape water eutrophication and algae overgrowth

Abstract

The invention discloses a comprehensive treatment method of landscape water eutrophication and algae overgrowth. The comprehensive treatment method includes: 1) chemical dephosphorization, namely dephosphorization medicament is added into landscape water body; 2) microorganism purification, namely complex microorganism fungicide composed of primary degradation bacteria and auxiliary degradation bacteria is added into the landscape water body; and 3) aquatic plant auxiliary purification, namely aquatic plants are planted in the landscape water body. The invention has the beneficial effects that three methods of chemical dephosphorization, microorganism purification and aquatic plant restoration are organically integrated, the combination mode of the three methods is adjusted according to the characteristics of high contents of organic matters, nitrogen and phosphorus in eutrophication water body, so as to develop strong points and avoid weakness, and finally poor V type water body is purified to the standard of V type water body; and the landscape water body is effectively purified, and algae growth is controlled, thus solving the problem of water body eutrophication.

Description

technical field [0001] The invention relates to a comprehensive treatment method for landscape water body eutrophication and algae overgrowth. Background technique [0002] As far as the commonness of water pollution is concerned, urban sewage treatment technology can be used to purify landscape water bodies. However, because most of them are moderate to light pollution, with obvious occurrence periods and high aesthetic requirements, it is not suitable to directly use urban sewage treatment technology to control and treat them. In recent years, my country has carried out some active research and attempts on the purification and treatment of sewage ponds and rivers. From the perspective of technical principles, there are mainly three categories: physical methods, chemical methods, and biological-ecological methods. The above three categories of purification technologies all have different advantages and disadvantages. [0003] 1) Physical methods include: [0004] ①Artific...

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Problems solved by technology

[0004] ①Artificial oxygenation: Artificial oxygenation can increase the dissolved oxygen level of water in a short period of time, promote the growth of indigenous microorganisms, enhance the purification function of water itself, eliminate black odor, and reduce water pollution load, but the treatment is not thorough

However, it is not necessarily effective in controlling water pollution, especially eutrophic water, especially when external pollution sources have not been effectively controlled.

[0006] ③Diversion of water for flushing and water exchange and dilution: Water diversion for flushing and water exchange for dilution can transport a large amount of pollutants to the downstream in a short period of time and reduce the concentration of pollutants in the local water body, but this method can only transfer pollutants rather than degrade them , and will pollute the downstream of the basin

However, the dense growth of aquatic plants will cause mosquitoes to grow, and the untimely salvage of plant residues will cause secondary pollution, and the growth of plants is easily affected by the seasons

[0015] ③Constructed wetland technology: The pollution purification process of constructed wetland involves the comprehensive effects of physics, chemistry and biology, which can be used to reduce the pollution load of point and non-point sources such as agriculture, highways and towns, but it occupies a large area and the design and operation parameters are vague. Biological and hydraulic conditions are complex, susceptible to pests and diseases

[0016] ④ Stabilizing pond technology: The stabilizing pond has the advantages of simple structure, low infrastructure operation cost, and high removal efficiency, but there are problems such as large land occupation and serious sediment deposition

[0017] However, there are different advantages and disadvantages in the application of a single technology, so that there are many problems in large-scale promotion. Therefore, using combined technologies to maximize strengths and avoid weaknesses is an inevitable development trend of methods for purifying eutrophic water bodies