BIOPOLYMERS CALCIUM CARBONATE COOLING COOLING TOWERS DEPOSITION MEMBRANES POLYMERS REVERSE OSMOSIS SCALING

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Abstract

Scaling and deposition of industrial water systems are real problems faced by plant operators. For reverse osmosis (RO) water systems, scaling or deposition will shorten membrane life and force a facility to prematurely replace RO elements. Unless controlled, continuous membrane scaling and deposition creates on-going maintenance problems and additional operational expenses. Likewise, cooling tower operators must control scaling and deposits to achieve optimum operation. Unless resolved, these problems will impact cooling systems and again cause needless expenses.

One form of scaling faced by operators of industrial water systems comes from calcium carbonate (CaCO3). Sources of deposition may come from clay, silt, corrosion products, and precipitated soluble salts. This article reviews research by the authors to examine the performance several polymer treatments for use as CaCO3 dispersants in industrial water systems. Data presented in the article also offers the authors’ perspective on which type of polymer treatments offer more effective control in industrial water systems.

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