Rekayasa alat penyaring limbah cair model screw conveyor (Studi kasus: Laboratorium pengembangan penyamakan dan pengolahan limbah kulit Balai Besar Kulit, Karet, dan Plastik)

Tanning industry produces large amounts of wastewater which contains much solid particles. If left unchecked, the solids can block the pipe and damage equipments of wastewater treatment plant.Hence, the suspended fine solid must be separated from the wastewater. This engineering activity has generated screw conveyor models for wastewater filter. The specifications of the filter are screw diameter 300 mm, pitch distance 150 mm, shaft diameter 25.4 mm, screw length 1200 mm, tilt angle 250, and screw actual capacity 42.237,99 kg/hour. Propulsion system comprising an inverter, 3 phase, 1 hp electric motors; and gear box. The advantages of this equipment are the effectiveness of filtering up to 90 %, easy operation and maintenance, and the filtered solid is in half dried conditions, so it is easy to store and transport.