Method and device for gas floating isolation enrichment of water-blooming cyanobacteria

Abstract

The invention discloses a method and device for gas floating isolation enrichment of water-blooming cyanobacteria. The method includes the steps that A, gas floating isolation cyanobacteria collecting is carried out, wherein a flexible pipe is inflated to upwards float, a gas floating isolation strip is formed, a cyanobacteria collecting zone is formed on a bank zone, and cyanobacteria-laden water and cyanobacteria slurry in the zone are harvested through a cyanobacteria collecting machine in a concentrated manner; B, sinking for natural cyanobacteria collecting is carried out, wherein after cyanobacteria harvesting is completed, the flexible pipe is deflated to sink, water surface landscapes are recovered, and meanwhile the cyanobacteria is naturally enriched to the bank zone again until the cyanobacteria water concentration reaches the harvesting condition; and C, the flexible pipe achieves flotation and sinking through one of the three manners. After the flexible pipe and a bottom sinking stone cage are wrapped with flexible waterproof cloth, a bag-seaming machine is used for seaming to achieve connection with the flexible waterproof cloth, the stone cage sinks to a water / sediment interface, an inflation sealing valve and a deflation sealing valve are installed at the two ends or one end of the flexible pipe, and the inflation sealing valve is connected with an air compressor. The method is practical, operation is easy and convenient, the requirement of concentrated harvesting of cyanobacteria collecting equipment is met, the cyanobacteria collecting zone can be rapidly formed, and the water-blooming cyanobacteria in a lake water body can be harvested in large scale.

Description

technical field [0001] The invention belongs to the technical field of isolation and enrichment of water body algae and environmental protection, and more particularly relates to a method for isolation and enrichment of cyanobacteria by using a flexible tube to inflate and float up. At the same time, it also relates to a device for isolating and enriching blue-green algae by inflating and floating a flexible tube, which can quickly form an algae-collecting area, and is especially suitable for large-scale collection of blooming blue-green algae in lake water bodies. Background technique [0002] There are currently many mechanical harvesting methods for removing cyanobacteria blooms in lakes. Mechanical algae harvesting is a physical method that can directly remove cyanobacteria blooms on the lake surface without any negative impact on the water ecosystem. But no matter which method is used, in order to improve efficiency and save costs, the algae water harvested mechanically...

AI Technical Summary

Problems solved by technology

However, no matter which method is used, the speed of the transfer of cyanobacteria in the water to the equipment cannot keep up with the harvesting speed of the equipment, resulting in a large amount of algae water with low algae concentration being absorbed by the equipment during harvesting, which greatly reduces the harvesting of the equipment efficiency

For a long time, this problem has plagued the operation of cyanobacteria harvesting equipment

In addition, using the natural characteristics of blooming cyanobacteria to gather in the coastal zone with the wind direction, in actual operation, bell mouth devices are often used to divert and collect algae, or traps are used to enrich and capture blooming cyanobacteria (such as patent CN201010285071.2), mainly The purpose is to make the mechanical harvesting work more efficiently. However, these devices will greatly affect the water surface landscape when they are idle, and the devices are easily damaged when encountering strong winds and waves.

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