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The treatment of a fertilizer company's effluent was evaluated using lime and electrodialysis reversal (EDR) for phosphate removal, water and chemical recovery, and effluent Phosphate could be reduced from 3 800 to less volume reduction. than 50 mg/l at pH 8.5 with lime: however, phosphate removal from the lime treated effluent using EDR was poor (75% removal). The EDR product water complied with the requirements for cooling tower make-up except for TDS and phosphates. However, the required specifications should be met using 10 stage EDR. In addition, plant nutrients

Lime treatment is effective for phosphate removal. However, better phosphate removals should be obtained with lime and ferric chloride. EDR treatment of the effluent should be successful for water and chemical recovery and effluent volume reduction. Membrane scaling and/or fouling was virtually absent.