Method for effectively controlling algal blooms by utilizing microbes

Abstract

The invention relates to a method for effectively controlling algal blooms by utilizing microbes, which comprises the steps: four different physiological groups of microbes which are bacillus, acinetobacter, denitrifying bacterium and photosynthetic bacterium are mixed to form a mixed bacteria culture according to the volume ratio of 1 to 3 : 1 to 4: 1.7 to 6: 1 to 5; and bacteria addition treatment is carried out for one time every seven days according to 0.05 to 0.2per mill of addition volume of the volume of a treated water body by a continuous bacteria addition method. The mixed bacteria culture can simultaneously purify and treat various pollutants in eutrophic water body, has strong adaptability, can quickly form dominant microflora in water body, lead all pollutant indexes of purified and treated eutrophic water body to be obviously reduced and have good removal effect and higher removal rate, wherein in eutrophic water body, the removal rate of TN reaches 83.1 to 84.4%, the removal rate of TP reaches 86.7 to 92.1%, the removal rate of COD reaches 76.9 to 82.9 %, and the removal rate of Chla reaches 87.2 to 90.4%. The purification method is simple to operate and has low operating cost, is safe and reliable, can maintain water quality of water body for long term and has good economic, ecological and social benefits.

Description

technical field

[0001] The invention relates to a method for controlling algae blooms, in particular to a method for effectively controlling algae blooms by using microorganisms, which is suitable for purification treatment of eutrophic water bodies. Background technique

[0002] At present, the phenomenon of eutrophication in my country's water bodies is common, and the direct consequences are deterioration of water quality, foul smell of water, excessive algae growth, decline of biodiversity, frequent occurrence of algae blooms, serious impact on water quality, and threats to human health. In recent years, although great progress has been made in blocking sources and intercepting pollution, from the analysis of eutrophication degree, the nutrient status index of each water body is still higher than before. It can be seen that the control of water eutrophication by controlling the input of exogenous nitrogen and phosphorus has not achieved ideal results in a short period of...