Downflow Denitrification Floating Island

Abstract

The invention discloses a downward-flow denitrification floating island which comprises a suspension system, a stabilization system and a microbial denitrification system, wherein the suspension system comprises PVC (polyvinyl chloride) pipes (5) with the diameter of 300 mm and PVC pipes (6) with the diameter of 200 mm; the stabilization system is located in the position 1,000 mm under the suspension system, adopts a square stainless steel frame (2) with hollow inside and is connected with PVC floating balls (1) through floating ball ropes (9), the external side length of the frame is 6,000 mm, and the internal side length is 3,000 mm; and the microbial denitrification system comprises a PVC box (4), soft filler (10) and a supporting layer (11), each of the bottom length and bottom width of the PVC box (4) is 3,000 mm, the height is 5,300 mm, the upper end is open, the top end is 300 mm higher than each PVC pipe (5), and the part, in the position 1,000 mm below the water surface, of the PVC box is connected with the internal sides of the stainless steel frame (2). The downward-flow denitrification floating island has the following advantages: the structure is compact, and the denitrification efficiency is high; water flows through the soft filler (10) from top to bottom by means of the microbial denitrification system with assistance of the gravity of water body, and power is saved; and the stereoscopic cross-shaped structure of the floating island has high stability and cannot overturn.

Description

technical field [0001] The patent of the invention belongs to the technical field of ecological restoration of water bodies, and specifically relates to a downward flow denitrification floating island, which is especially suitable for ecological restoration of nitrogen pollution in lakes and reservoirs. Background technique [0002] With the further improvement of the degree of domestic industrialization, the further expansion of the scale of urbanization, and the application of a large amount of chemical fertilizers, a large amount of nitrogen-containing substances are directly discharged into the receiving water body or flow into the receiving water body with rainfall runoff, which greatly increases the outbreak probability of eutrophication in the water body and eruption intensity, especially in lakes and reservoirs with poor water mobility. According to the survey, nearly 30% of lakes and reservoirs in my country are in a state of eutrophication, and the scope of eutroph...

AI Technical Summary

Problems solved by technology

However, the above technical structures are complex and the water surface occupies a large area. It is necessary to develop a multi-functional floating island technology with a compact structure and high water purification efficiency.

Images