Urban static riverway water body remediation method

Abstract

The invention relates to an urban static riverway water body remediation method which comprises the following steps: (1) arranging aeration equipment in a target water body, and keeping the dissolvedoxygen concentration of the water body at 3-4mg / L or above; (2) determining the total water amount of the target water body and the contents of nitrogen, phosphorus and chlorophyll a in the target water body; (3) releasing silver carps and crucian carps into the target water body according to the total water amount and the content of chlorophyll a; (4) fishing after the silver carps and the crucian carps are released for 8-10 months; and (5) releasing a certain amount of similar fishes within one month to two months after fishing, and observing the change condition of the water body. By combining artificial aeration with increasing the number of fishes and aquatic animals in the water body, the water body in a closed waterway is improved. Algae that can be eaten by fishes is added into thewater body, the algae in the water body is reduced, the content of nitrogen and phosphorus in the water body is indirectly reduced, the food chain of a water ecological system is balanced, and the water quality is also improved.

Description

technical field [0001] The invention relates to the technical field of water body ecological restoration methods, in particular to a method for urban static river water restoration. Background technique [0002] Most of the urban rivers are close to closed static or slow-flowing water bodies. At the same time, they have the characteristics of small water area, easy to be polluted, and low water self-purification ability. It is easy to cause eutrophication of water body. At present, the pollution of closed rivers in cities, especially the phenomenon of eutrophication, is relatively prominent. The problem of closed rivers, especially the phenomenon of black and odorous water bodies, has become an urgent problem to be solved, affecting the ecology of water bodies and urban landscapes. Closed rivers are prone to algal blooms. The water body is black and smelly, mosquitoes and flies are breeding, etc., which seriously affect the environment of the surrounding area. [0003] Com...

AI Technical Summary

Problems solved by technology

At present, the pollution of closed rivers in cities, especially the phenomenon of eutrophication, is relatively prominent. The problem of closed rivers, especially the phenomenon of black and odorous water bodies, has become an urgent problem to be solved, affecting the ecology of water bodies and urban landscapes. Closed rivers are prone to algal blooms. The water body is black and smelly, mosquitoes and flies are breeding, etc., which seriously affect the environment of the surrounding area

[0003] Commonly used methods for urban river management include physical methods, chemical methods, biological methods, and ecological methods, etc., but none of them can fundamentally solve the problem of closed rivers, especially the problem of black and odorous water bodies. Therefore, the current treatment of closed rivers has become a New field of sewage treatment