Long-term low intensity aeration reoxygenation polluted river and lake water body treatment method and device thereof

Abstract

The invention discloses a long-term low intensity aeration reoxygenation polluted river and lake water body treatment method and device thereof, relating to the environment protection technical field, in particular to the oxygenation aeration river and lake water pollution treatment technology. The method includes controlling an aeration device arranged in water body according to dissolved oxygen concentration in river or lake water body and concretely includes measuring dissolved oxygen DO in river or lake water, opening the aeration device to operate when the dissolved oxygen DO is less than 0.8mg / L and closing the aeration device when the dissolved oxygen DO is more than 1.5mg / L. The device is a dissolved oxygen automatic controller the monitoring end of which is arranged in the river or lake water, the control terminal is connected with the power control terminal of the aeration device, and the aeration device is arranged in river or lake water. Through implementation, the invention has the beneficial effect that removing effect of water body on pollutant is remained while the aims of reducing energy consumption and saving water body treatment operation cost are achieved by controlling relatively low dissolved oxygen concentration in water body. The invention has more popularized value in rural and remote areas where energy source is relatively tight.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to an oxygenation and aeration technology for purifying water quality pollution of river courses and lakes in the discipline of environmental engineering. Background technique [0002] Since the 1960s and 1970s, the eutrophication of lakes and rivers has become a very serious environmental problem faced by the whole world. At present, experts from all over the world use various methods to solve the increasingly serious water pollution problems of rivers and lakes. Among them, artificial aeration and reoxygenation technology, as a water pollution control technology with low investment and quick results, has been successfully applied in many lakes and rivers. Ecological restoration and ecological improvement projects. However, in conventional aeration treatment projects, it is generally required that the DO in water reaches 2mg / L or even higher (for example, fishery water requ...

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Problems solved by technology

[0003] The present invention solves the problem that constant aeration will cause excessive aeration and waste electric energy; it also needs to prevent insufficient aeration from being unfavorable to water body pollution control; A long-term low-intensity aeration and re-oxygenation method for treating polluted water in rivers and lakes and its device

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