The invention belongs to the technical field of water treatment, and provides a method and system for high-efficiency treatment of alkaline wastewater. The high-efficiency system for cold-rolling alkaline wastewater sequentially comprises a water inlet pump, a pH regulating tank, a deep aeration biofilm biochemical tank, modified fillers, a primary lift pump, an adsorption tower, modified vermiculite adsorbent and a water outlet pump. The deep aeration biofilm biochemical tank is internally filled with modified fillers at a filling rate of 35–45%, and the adsorption tower is internally filled with modified vermiculite adsorbent accounting for 85–90% of the total volume of the tower. The system of the invention solves the environmental pollution caused by cold-rolling alkaline wastewater discharge, belonging to a green and environmentally friendly iron and steel production process. It effectively solves the problems of COD and heavy metals in cold-rolling alkaline wastewater with low-cost green water treatment technology, thus achieving both economic and environmental benefits with good social and environmental benefits.

지역번호: CN

신청 번호: CN202010592860.4