In-situ repair method for deep water type water body

Abstract

The invention discloses an in-situ repair method for a deep water type water body. The repair method comprises the following steps: introducing air into incompletely closed space with certain volume in the middle and upper part of the deep water type water body, so that air and the water body form an air-water mixture; and in a floating process of the air-water mixture, driving a water-sludge mixture at the bottom of the water body to ascend into the space through a communicating device. The in-situ repair method for the deep water type water body can perform in-situ repair on the sludge at the bottom of the deep water type water body; the water body is not required to be subjected to replacing and dredging operation in repairing, and secondary pollution is avoided after the water body isrepaired.

Description

technical field [0001] The invention belongs to a water pollution treatment method. Background technique [0002] At present, there are a large number of water bodies in our country with various types of pollution. For example, more than 93% of the park water bodies are eutrophic, and more than 85% of the lakes are eutrophic. There are nearly 2,000 rivers in cities above the prefecture level in the country. The problem not only seriously affects the image of the city, but also seriously damages the urban living environment and people's physical and mental health. [0003] Treatment methods for water body pollution in the prior art include physical methods, chemical methods, and biological methods. Use physical methods such as water purification equipment to purify and replace water bodies; introduce oxygen into water bodies; increase water circulation; add chemical and biological reagents to water bodies for purification, etc. Among them, the treatment method of adding che...

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Problems solved by technology

Among them, the treatment method of adding chemical and biological reagents may further damage the water ecosystem and bring new hazards such as secondary pollution; the method of using water purification equipment to purify and replace water usually consumes a lot of energy and resources, and is only suitable for a single Decontamination treatment, the treatment effect is difficult to maintain continuously; the method of increasing water circulation and introducing oxygen into the water is usually low in treatment efficiency, long in treatment cycle, and poor in treatment effect

[0004] Other water body purification methods or equipment used in the prior art usually have one or more of the above-mentioned problems, and more generally have the following difficult problems: the coverage is shallow, and only the water body in the middle and upper part of the water area can be treated. There is nothing that can be done for deeper water bodies; it can only purify the water body, but does not improve the ecological purification ability of the water body; usually only fixed-point operations, the coverage is small, and multi-point simultaneous operations or mobile operations are not possible

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