Patent ID: 6248369
Filing Date: 2001-06-19
Classification: A01N,C02F

Abstract:
A method of controlling algae in a municipal water plant, comprising the steps of:passing raw water to a clarifier; andadding an effective amount of an algicide-flocculant solution to the clarifier, where the algicide-flocculant solution is mixed substantially uniformly with the incoming raw water, wherein (i) the algicide-flocculant solution comprises 25-50 wt % acidic flocculant, 0-10 wt % polymer flocculant aid, an algicide consisting essentially of copper having a concentration of 0.025-1.25 wt % in the form of a water soluble copper salt, balance water, and (ii) said effective amount of the algicide-flocculant solution is an amount sufficient to kill algae in the clarifier and to coagulate and/or flocculate particulates in the raw water that is in the clarifier.