Water purifying technology for large-scale floating plant cultivation project of lake river mouth surface

Abstract

The invention discloses a maturity process and a packaged technology for purifying water in a lake-river-mouth on-scale floating plant cultivation project. The main body comprises an outside protective cloth water barricading, a floating blanket type wave absorption zone, a floating plant purification area, an inboard water distribution barricading, an aeration deodorization reoxygenation zone and a submerged plant purification area. By the outside protected water distribution barricading and the floating blanket type wave absorption zone, boundaries of a project area are controlled, the water flow exchange between the water body in the project area and the lake surface is obstructed and storms is resisted; by the outside protected water distribution barricading and the inboard water distribution barricading, the inflow and outflow of the water of the project area are controlled, thereby even water distribution and uniform water power residence time are achieved; the main process unit for water purification is formed through cultivating floating plants on scale on large cage carriers with the biserial emplacement and the elastic mooring at the bottom of the lake; through deodorization and reoxygenation in the aeration zone, and oxygenation and purification in the submerged plant purification area, the odor in the water is eliminated and the water is resumed to the oxygenation state, the effects of the floating plant purification area to the downstream water body and surrounding environment are eliminated. The maturity process and the packaged technology can be used to control the related pollution among water bodies including rivers flowing into lakes pollution control, water flow flowing out of lakes pollution control, water purification of lake coastwise sewage discharge points, water purification of lake coastwise intake points (water resources area) and others, and have the remarkable efficacies of eliminating alga, nitrogen, phosphorus.

Description

Technical field: [0001] Water environmental engineering. The invention relates to a complete set of technology for water quality purification engineering of estuary water surface, including boundary protection, flow field control, large-area floating plant breeding, natural water aeration and deodorization, oxidation and purification of submerged plant areas, etc., and is suitable for entering and exiting rivers in lakes A temporary water purification project will be constructed on the water surface of the estuary area to remove the algae and various pollutants in the natural water flow, and control the joint pollution between the surface water bodies. This engineering technology can also be used for water quality purification at lakeshore sewage discharge points or water quality protection at water intakes (especially pollution protection of floating cyanobacteria). Background technique: [0002] The river into the lake collects non-controllable non-point source pollutants and r...

AI Technical Summary

Problems solved by technology

However, its limitations lie in that the scale of constructed wetlands occupied by land is strictly limited by the available land area, and there is a height difference between the constructed wetlands and the river surface, driving the operation of the constructed wetlands still requires a large water level difference, and water lifting has caused relatively large water level differences. High operating energy consumption and cost; most of the rivers have been highly artificial, the width of the river is very limited and designed strictly according to the needs of flood discharge, the scale of ecological floating beds or floating plants on the water surface of the river is very limited, and there are problems hindering flood discharge, purification facilities and It may be destroyed by floods, and the floating plants will escape the whole lake, which has a greater ecological risk; most of the lakes and embankments in my country are artificially artificial, and natural estuary wetlands rarely exist

In order to reduce the impact of cyanobacteria in Taihu Lake on the Meiyuan Water Plant, Wuxi City once built bamboo fences to raise water hyacinths on the water surface of the estuary of Dushan Port where the water intake is located. rotting and decomposing, causing serious water pollution

So far, no large-scale, process-oriented and engineering-based water purification technology for estuary lake surface has been seen.

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