Oil-water separators available include manual and automatic types. The manual oil-water separator is typically suited for smaller capacity applications and requires simple manual maintenance. Its advantages include achieving oil-water separation without power connection, saving energy and reducing emissions, aligning with today's environmental protection philosophy. The automatic oil-water separator requires no manual maintenance, features automatic waste water and sludge discharge, and automatically detects the oil-water interface for oil discharge. Its benefits include eliminating the need for manual maintenance and enabling visual monitoring capabilities. If installed in a basement, it must have lifting functions.