Aquatic air curtain intercepting method and device

Abstract

The invention discloses a method and a device for intercepting floating pollutants in a low-flow water body by using aquatic air curtain. The aquatic air curtain device consisting of a fan, a gas pipeline, a U-shaped drainage tail pipe, a branched pipe interface, a micropore aeration branched pipe and the like is horizontally arranged at the depth of about 1.5 meters under the water surface in a water bottom fixed mode or a water surface suspension mode, and vertical rising curtain gas-water flow is formed in the water body by strip micropore aeration to cut off wind-generated laminar flow of the surface of the water body and intercept floating blue algae and garbage sundries carried by the wind-generated laminar flow on the windward or upstream side. An 'invisible' water body floating pollutant intercepting defense line can be built by using the technology and is used for intercepting, guiding and enriching the pollutants such as floating algae, greasy dirt, garbage sundries, weeds and the like in the low-flow water bodies of inland lakes, reservoirs, ponds and the like, in particular intercepting the floating pollutants such as water intakes of urban waterworks. The building expense of the 1km aquatic air curtain intercepting facility is less than 1 million yuan, the running power is less than 20kw, and the aquatic air curtain intercepting facility can be started and closed at any time as required, is not affected by wind waves and ships, does not affect water flow, water quality, water body landscape and ecology, and has over 10 years of service life.

Description

Technical field: [0001] Water environment engineering technology. The invention relates to a method and device for blocking pollution by an air curtain in water, which is suitable for blocking, diversion and enrichment of floating algae and garbage debris in inland low-velocity water bodies (lakes, reservoirs), and has the functions of protecting target water areas and preventing floating. It can be used as an auxiliary means to enrich and remove cyanobacteria and garbage and debris on the water surface, especially for the pollution blocking of urban tap water intake. Background technique: [0002] The cyanobacterial disaster caused by water eutrophication seriously endangers many lakes and reservoirs. The disaster is characterized by "edge effect". The disaster mechanism is caused by the floating, migration and accumulation of cyanobacteria under mild climate conditions (wind speed <4m / s). Blocking and removing the cyanobacteria drift path can effectively prevent the oc...

AI Technical Summary

Problems solved by technology

In lakes with serious eutrophication problems such as Taihu Lake, Chaohu Lake, and Dianchi Lake, various fence (fenced) technologies are used to block blue-green algae. Their effectiveness is certain, but they hinder traffic, affect landscape, block water flow, and affect ecology , Polluted water quality and other negative effects strictly limit its applicability, and the fence (enclosed) on the large lake is easily damaged by wind and waves (especially typhoon), the construction and maintenance costs are high, and the reliability is relatively poor

The interception of floating garbage in water generally adopts the blocking method, which is prone to blockage, which not only blocks the water flow but also is difficult to clean up

Images