Addition method for enhancing algae removal effect of allelochemicals

Abstract

The invention discloses an addition method for enhancing the algae removal effect of allelochemicals, and the method comprises the following steps of: A, adding allelochemicals with algal inhibiting activity into eutrophication water containing water bloom algal in a dosage of 40-60mg in a range of per cubic meter; B, adding in a manner of intermittently adding for 9-11 times from 8 a.m. to 8 p.m. in the daytime everyday and continuously adding for 5 days; and C, controlling the intermittent time for addition each time in 0.9-1.1 hours. On the premise of obviously reducing the single adding amount of the allelochemicals, the method can be used for more lastingly and effectively inhibiting the growth of the water bloom algal, preventing and controlling the outbreak of the water bloom in the eutrophication water, playing a role of flexibly, safely and effectively protecting functional waters such as water source regions, scenic waters, aquatic waters and the like, obviously enhancing the algae removal effect of the allelochemicals, realizing the efficient algae removal of the low dosage of the allelochemicals and promoting the application prospect of the allelopathy algae control technology.

Description

technical field [0001] The invention belongs to the technical field of ecological algae control, and relates to a dosing method capable of enhancing the algicidal effect of allelochemicals. The high-efficiency algae control can be realized by intermittently dosing allelochemicals multiple times at low doses. Background technique [0002] At present, the existing methods for controlling algae in eutrophic water mainly include physical methods, chemical methods and biological methods, among which physical methods specifically include mechanical or manual salvage, clay flocculation and shading technology, etc., and most of them can directly remove algae in water bodies. Algae does not produce secondary pollution, but it requires expensive expenses, so its application is limited. The traditional chemical method is mainly to spray a certain concentration of sodium hypochlorite, copper sulfate and other chemicals directly to the waters where the algae blooms occur. Some of them w...

AI Technical Summary

Problems solved by technology

However, because the dry plants release a large amount of nutrients into the water while releasing allelochemicals, this method is likely to cause the nutrient level of the water body to increase and the water quality to deteriorate; The improved and synthesized high-efficiency algae-inhibiting allelochemicals are directly added to the water body where the algae bloom outbreak occurs to achieve the purpose of rapid control of algae blooms, but the search for efficient algae-inhibiting allelochemicals is the key

Among the allelopathic algae-inhibiting substances extracted from the body or secretions of aquatic plants, the effective algae-inhibiting concentration of the most active allelochemical is also at the mg / L level, which is not far from the effective algae-inhibiting dose of traditional chemical algicides. If such a large amount of water is added to the water body, although algal blooms can be controlled to a certain extent, it may also cause safety hazards due to the large amount of allelochemicals added at one time, exceeding the degradation, decomposition and transformation capabilities of the water environment itself within a certain period of time.