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A water quality in-situ restoration system for coastal black and odorous rivers

An in-situ restoration and river course technology, applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve complex water quality and hydrological conditions, offline treatment stays in the laboratory research stage, Problems such as technical difficulty in water quality restoration of heavily polluted rivers

Active Publication Date: 2016-06-15
YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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Problems solved by technology

At present, there are relatively few reports on the restoration technology of heavily polluted coastal black and odorous rivers, and most of them are aimed at the offline treatment of freshwater bodies such as rivers or lakes or remain in the laboratory research stage.
For coastal rivers, due to the influence of tides, the water quality and hydrological conditions are relatively complex (such as strong hydraulic disturbances, etc.), and the high salinity also inhibits the activity of microorganisms and plant growth to a certain extent, so the water quality of heavily polluted coastal rivers There are certain difficulties in the establishment of restoration technology

Method used

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  • A water quality in-situ restoration system for coastal black and odorous rivers
  • A water quality in-situ restoration system for coastal black and odorous rivers

Examples

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Embodiment 1

[0016] A certain river in Weifang, Shandong Province is the main sewage channel of the local municipality, which receives 70% of various types of sewage from the local municipality, with a total of about 70,000 tons per day (of which industrial wastewater accounts for about 40%). Due to year-round pollution, the water body of the river course resembles black ink and emits an unpleasant stench, which directly interferes with the lives of residents around the river course. In addition, the river has been in an anaerobic state for a long time, and the water body is constantly overflowing with air bubbles, especially in high temperature seasons. Although the local government has dredged and scoured the river many times to solve the pollution problem, it has had little effect. In addition, since the river will eventually flow sewage into the Bohai Sea, the discharge of black and odorous water directly threatens the coastal water quality of Laizhou Bay, as well as normal coastal ind...

Embodiment 2

[0025] A certain river course in Yantai, Shandong Province is one of the main scenic river courses built locally. Park-style green belts have been made on both sides of the river course, and even hydrophilic pavilions have been built in some sections of the river course. However, due to the continuous discharge of various types of sewage and waste water on both sides of the river, the water in the river is black and smelly. Therefore, the park-like ecological river has gradually evolved into a black and smelly river that residents avoid. It is also the main breeding ground for mosquitoes in summer. source. The river course not only causes a huge waste of municipal resources, but also directly affects the physical and mental health of residents in the river basin, and directly affects the water environment quality of Yantai's coastal waters.

[0026] In view of the above-mentioned heavily polluted coastal river, various engineering measures in the above-mentioned embodiment 1 w...

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Abstract

The present invention belongs to the technical field of environmental engineering water treatment, particularly to a coast black-odor river channel water quality in-situ remediation system, which comprises: grates and a plurality of dams sequentially arranged in a water quality in-situ remediation river channel along to a water flowing direction, wherein the effluent surfaces of each dam are slopes, multi-stage tapered blocks are arranged on the slopes along the water flowing direction, the bottom portions of the slopes are provided with in-situ aeration biological filtration pools, artificial biological films are arranged in the water areas between the dams, and ecological floating beds are arranged on the water surfaces between the dams. According to the present invention, the water quality pollution indexes in the remedied water body are reduced by more than or equal to 70%, the dissolved oxygen and the transparency of the water body are significantly increased, the black-odor phenomenon is complete removed, and the remedied water body can be used as the landscape water.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering water treatment, in particular to a water quality in-situ restoration system for coastal black and odorous river courses. technical background [0002] With the rapid development of coastal economy, water pollution of coastal rivers has become an important environmental problem in my country and even in the world. The river water is easily polluted by domestic sewage, rainwater, agricultural runoff, and industrial wastewater, resulting in serious deterioration of water quality, black and smelly water, and fish deaths. In northern China, especially in the coastal areas, due to water shortage, most of the rivers are used for agricultural irrigation, especially in the dry season. However, most of these rivers are polluted to varying degrees. Therefore, the remediation of river polluted water has become an important regional and global issue. In situ bioremediation is one of the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 盛彦清孙启耀曲瑛璇李兆冉
Owner YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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