In-situ water restoration method and corresponding in-situ water restoration system

Abstract

The invention relates to an in-situ water body restoration method and a corresponding in-situ water body restoration system. The method is to arrange a packing layer under the bottom mud, the bottom mud is laid on the top of the packing layer, and the bottom of the packing layer is provided with a mud drainage pipe, and the bottom mud drainage is carried out through the mud drainage pipe, so that The water body above the bottom mud moves downward as a whole to form a water flow passing through the bottom mud, thereby increasing the oxygen content in the bottom mud and everywhere in the vertical direction of the water body. The system includes a packing layer laid on the foundation of the water body and bottom mud laid on the packing layer. The lower part of the packing layer is equipped with a mud drainage pipe, and the packing layer is divided into packing water collecting layer, packing purification layer and packing filter layer. The invention can improve the self-purification ability of the water body, especially the purification ability of the sediment at the bottom of the water body, increase the environmental capacity of the water body, reduce the corresponding pollution control cost, and reduce or fundamentally eliminate the need for bottom mud dredging.

Description

technical field [0001] The invention relates to an in-situ water body restoration method, and also provides an in-situ water body restoration system adopted or used to realize the method, which belongs to the technical field of water pollution control and environmental protection. Background technique [0002] With the rapid economic development, the problem of environmental pollution will become increasingly serious, especially water pollution, which is the most important environmental problem in my country, has always been the top priority of the government's environmental protection work. Since the reform and opening up, the country has invested huge sums of money in the restoration and treatment of urban water bodies, and good results can only be achieved for a period of time. However, water pollution is repetitive. With the change of time and the development of surrounding water bodies, more and more water bodies have re-deteriorated, making water body management more ...

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Problems solved by technology

[0003] Among them, an important problem is the continuous deposition of sediment and other forms of pollutants in the water body. The water body is continuously deposited and polluted by point sources, internal sources, and surface sources, which makes the water quality exceed the self-purification capacity over time, resulting in The water quality deteriorates, and even black and odorous water bodies are formed. Generally, the sediment of the water system needs to be dredged every 4-8 years. With the increase of water pollutants or ecological imbalance, the water body is constantly replaced. Generally, the water body of the water system is replaced once a year. -2 times

There are a number of technologies for enhancing the effect of water purification, such as artificial wetlands, construction of water ecological balance (microbes, animals, plants, etc.), aeration devices, floating island technology, sediment dredging, water recycling technology and underwater forests, etc. , but these single technologies can often only alleviate the deterioration of water quality locally, and lack effective, economical and effective treatment methods for the continuous deposition of sediment pollutants

For example, artificial wetlands only guarantee the purification of water quality, but the purified water re-enters the water system and re-contaminates, which cannot fundamentally solve the self-purification ability of the water system; another example is sediment dredging. With the precipitation of pollution sources such as air, soil, water, and plants, the river bed needs to be repaired at intervals The bottom mud cannot solve the problem of river bed restoration from the root cause, especially the dredging process of the bottom mud often seriously damages the original ecology, and the disposal of the cleared sludge is also a difficult problem

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