A method for reducing water eutrophication

Abstract

The invention relates to water eutrophication, in particular to a method for reducing water eutrophication. The method includes the following steps: a. soil test: the agricultural technical department collects a soil sample per 200-300 mu according to the soil condition in different districts, and the soil samples are processed and then send to a laboratory for analyzing the content of soil nutrient; b. formula: according to the result of soil analysis and the fertilizer requirement of different crops, reasonable formulas are made; c. production: fertilizer enterprises produce special fertilizers for different soil and different crops according to the formulas; d. supply: according to sale strategy, fertilizer enterprises employ general agents in certain districts for selling fertilizer; e. fertilization: peasants purchase the special fertilizers in the designated agent sales fertilizer site and carry out fertilizer application under the direction of agricultural technicians. In the method of the invention for reducing water eutrophication, the special fertilizer is applied according to different soil and different crops, and the amount of used nitrogen and phosphorus fertilizer can be reduced, thus reducing the nutriment input from outside as well as the enrichment of nutriment in water.

Description

A method for reducing eutrophication in water body technical field The invention relates to water eutrophication, in particular to a method for reducing water eutrophication. Background technique Eutrophication refers to that under the influence of human activities, a large amount of nutrients such as nitrogen and phosphorus required by organisms enter slow-flowing water bodies such as lakes, estuaries, and bays, causing algae and other plankton to multiply rapidly, and dissolved oxygen in water bodies The amount of water has declined, the water quality has deteriorated, and fish and other organisms have died in large numbers. Under natural conditions, lakes also transition from oligotrophic to eutrophic, but this natural process is very slow. However, the eutrophication caused by the artificial discharge of industrial wastewater and domestic sewage containing nutrients can appear in a short period of time. When eutrophication occurs in water bodies, phytoplankton algae ...

AI Technical Summary

Problems solved by technology

This brings difficulties to the control of pollution sources; ②The high difficulty of nutrient removal, so far no single biological, chemical and physical measures can completely remove nitrogen and phosphorus nutrients from wastewater

The usual secondary biochemical treatment method can only remove 30-50% of nitrogen and phosphorus