POSCO WATER TREATMENT MANAGEMENT FOR SUSTAINABLE INDUSTRY

Posted on 08 February 2013
 

POSCO WATER TREATMENT MANAGEMENT FOR SUSTAINABLE INDUSTRY
In POSCO, The waste water generated from steel-making processes goes through primary waste water treatment plants installed at each unit, and 98% or more treated water is re-used. Water that is not recycled during the steel-making procedures undergoes secondary treatment at the Final Waste Water Treatment facilities to be re-used for cleaning roads inside the mill and sprinkling at material yards to reduce dust. Lastly, the remaining portion is discharged to the nearby ocean. POSCO has various water treatment facilities for supply water, waste water from individual process, final waste water, rainwater, and sewer. In Pohang Works, there are two waste water treatment systems including Primary Waste Water Treatment (WWT) and Final WWT. Waste water generated from Coke, BF, FINEX, and STS unit goes through the preliminary treatment by each unit. The last treatment is carried out in the Final WWT, which is composed of Iron & Steel Making Area Treatment Facility and Rolling Area Treatment Facility. Aiming to reduce Total-Nitrogen (T-N), POSCO has brought in a facility for denitrification of discharged water using microorganism in the coke oven and stainless steel plants. Furthermore, additional Hydrochloric Acid Facilities (HAF) have been constructed for a drastic decrease in T-N in stainless steel plants. To reinforce the existing waste water treatment facilities in coke oven plants, activated carbon adsorption facility with an average daily capacity of 7,000 m3 was built in 2002. In 2006, POSCO constructed biological treatment facility with an average daily capacity of 12,000 m3 in iron-making plants. 2010 SEAISI Seminar

 

Download




«  Back

Copyright © 2016 SEASI Site. All Rights Reserved.