Energy -concerving and environment -protective type heavy metal sewage treatment plant

The utility model provides an energy -concerving and environment -protective type heavy metal sewage treatment plant, includes the preliminary treatment pond, be equipped with a (mixing) shaft in the preliminary treatment pond, the (mixing) shaft is connected with the motor that is located preliminary treatment pond top, still be equipped with a plurality of puddlers on the (mixing) shaft, evenly be equipped with a plurality of stirring vane on the puddler, be equipped with a plurality of left baffles and right baffle in the preliminary treatment pond, left side baffle below slope right sets up, and the left side wall fixed connection in left baffle left end and preliminary treatment pond, and the right side wall in left baffle right -hand member and preliminary treatment pond leaves the clearance, baffle below slope left in the right side sets up. The beneficial effects of the utility model are that added blue alga and flocculating agent in sewage, its purifying effect is good, be equipped with the filler in