The Feasibility Studies Of The Waster Water Treatment Of The Chongqing Steel Making Corp,.

The CSMS (Chongqing Steel Making Corp.) will be relocated to JiangNa of Chang Shou district of ChongQing. It will acquire advanced equipments and adopt new technologies to reduce energy consumption and be more environmental friendly, which will provide the strength for the growth of the business. In the first stage of the project, two new plants, 1780mm width continuous hot roll and 4100mm width thick plate, will be built. The feasibility studies of the waster water treatment of the two plants suggest a plan that will achieve zero waste water by recycling the process water.Process water is used in steel making to cool equipment and rolled stuffs The oxidized steel scraps, waster grease, etc, will contaminate the process water. Lots of researches had been done on recycling the process water for steel making process. This paper iterated the problems in traditional water treatment technologies;i.e. deteriorate water quality, high expanses and environment contaminations. Three new technologies developed since 1990s has been compared. They have advantages in quality of treated water, facility area occupancy, and needed capital. The paper reaches the conclusion that rare-earth magnetic separation will economically be the best choice.This paper focus on the estimating of investments in each section, analyzing profitability, solvency, risk assessment, and finalized with benefits evaluation. The analyses are based on data from balance sheet, cash flows and income statement. The paper details in calculation of IRR(Internal Rate of Return),NPV(Net Present Value),RIO(Rate of Return of Investment),and PP(Payback Period),etc which covers both static and dynamic financial indexes.