Alvest - Dairy and Ume Plum Processing Wastewater Treatment System - Brochure

This JA (Japan Agricultural Cooperative) facility is used to collect and process milk, and to process Japanese time plums. The facility intermittently generates high BOD wastewater. To minimize the environmental impact on the ecologically rich rivers and streams of the area, a wastewater treatment system was designed to voluntary standards for BOD of <25 mg/L and for SS ot <5 mg/L. The system also includes a membrane-type sludge concentration tank to reduce the volume of excess sludge. The frequency with which excess sludge is carried away as industrial waste has been reduced to only once every three months.