Effective shallow floating device on the equipment is an advanced floating system, successfully used in shallow "theory" and "zero velocity" principle, design, coagulation, floating debris, precipitation, left, mud, and is an efficient energy-saving water purification equipment. Widely used in industrial sewage treatment system (e.g., papermaking, foodstuff, electroplating, leather, knitting, printing and dyeing, wool, slaughter, petroleum, chemical industry, etc.), especially suitable for papermaking industry of fiber maintenance, Also can be used for water, water for preprocessing of algae, except (such as material), Can also be used to concentrate the biological sludge disposal.