LIMESTONE TREATMENT OF RINSE WATERS FROM HYDROCHLORIC ACID PICKLING OF STEEL

摘要

A facility for disposal of these rinse waters was designed, based on a process developed at bench scale by Armco research scientists. This process utilizes limestone for neutralization plus aeration and sludge recirculation to oxidize ferrous iron and form soluble calcium chloride. This report describes the investigation of process variables at pilot scale and the optimization and demonstration of the process at full scale.nThis report was submitted in fulfillment of Project 12010 DUL under the partial sponsorship of the Environmental Protection Agency.