Enhance cooling-water reuse with sidestream softening

Journal Article · Sat Dec 01 04:00:00 EST 1984 · Power; (United States)

OSTI ID:6451222

Spear, K F; Matson, J V

Sidestream softening can improve the efficiency of closed-cycle cooling and reduce requirements for blowdown and makeup water. The major application for sidestream treatment is to the high-hardness and/or high-silica waters. The medium- and low-hardness areas of the country also have potential application because of the recycling or concentrating of the makeup water by 20 to 50 times. The economics of sidestream softening are influenced by the cost of makeup water quality, cooling-water-inhibitor program, and the effluent treatment costs. The raw water cost should be above 20-30 cents/1000 gal to warrant consideration of the technique. Water that is relatively high in hardness is a good candidate. The big dollar saving is usually in the cost of cooling-water-treatment chemicals. The blow-down contribution to the effluent is eliminated. Thus savings are incurred in operating costs or additional capacity availability. A computer model was developed to compare to economics of sidestream softening with a conventional cooling water system featuring blowdown. 7 references, 5 figures.

• OSTI ID: 6451222
• Journal Information: Power; (United States), Journal Name: Power; (United States) Vol. 128:12; ISSN POWEA
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
CLOSED-CYCLE COOLING SYSTEMS
COMPUTERIZED SIMULATION
COOLING SYSTEMS
ECONOMIC ANALYSIS
ECONOMICS
EFFICIENCY
ENERGY SYSTEMS
RESOURCE CONSERVATION
SCALING
SIMULATION
WATER TREATMENT
WATER USE