| 摘要 |
PROBLEM TO BE SOLVED: To restore a natural ecological system by converting nutritious components eluted from bottom sludge in a reduced state into inactive substances by using a purifying agent prepared by mixing an oxidation promoter and sodium silicate in an appropriate ratio. SOLUTION: A purifying agent for lakes, marshes, and others comprises an oxidation promoter and sodium silicate as an additive, the mixing ratio of which is about 50%. In the promoter, 500-1,000 g of pure water, 25-50 g of ammonium persulfate, 25-50 g of calcium nitrate, 2-4 g of phosphonic acid, and 15-30 g of dilute sulfuric acid are mixed. In place of ammonium sulfate which is used as a component of the promoter, sodium persulfate and hydrogen peroxide can be used. By injecting an appropriate amount of the purifying agent directly at each time into lake bottom sludge, the sludge is reformed fundamentally so that lake water can be clarified while the original self- purifying capacity of a lake is being restored. |
