Water Contamination from Preparation Plants

The effluents from coal preparation plants and waters draining from plant site surfaces contain fine coal and coal refuse materials in suspension. At older plants, the disposal of effluent continues to present a serious problem as it is becoming increasingly difficult to comply with the standards required by many water authorities and pollution control agencies [20]. New plants, however, are installing more complex clarification facilities, and new plants are designed to operate on a closed circuit to satisfy pollution requirements.

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