Abstract: A method for treating water using natural polymers that provide an alternate and improved means to achieve enhanced coagulation is described. A method for removing particles, color, and color from drinking water, comprising adding a primary coagulant such as a natural, cationic polymer like chitosan or a cationic starch and a coagulant aid such as bentonite to drinking water to form a mixture. A preferred concentration weight ratio of natural polymer to clay mineral is between 1:5 and 1:20.A composition for removing particles and color from drinking water is described that includes a natural, cationic polymer coagulant and clay mineral in a total amount effective to coagulate suspended material in the drinking water. The composition includes a weight ratio natural polymer coagulant/clay mineral of between about 1:5 to about 1:20.

Abstract: A multiport diffuser for discharging condenser cooling water from thermal power plants and the like, the diffuser being adapted for installation at the bottom of a large body of water and being operable to discharge the condenser cooling water at that submerged location. The diffuser consists of a main pipe disposed along the bottom of the large body of water and a large number of nozzles oriented at predetermined variable angles to the axis of the main pipe, the angle of orientation being a function of the distance of a particular nozzle away from the longitudinal center of the main pipe and also a function of the half-length of the main pipe.