Abstract:

To save water and reduce waste water discharge, the circulating discharged water of power plant can be used for desulphurization. Through analyzing the quality of circulating discharged water from a certain power plant, it ensures that the circulation waste water can basically meet the quality requirements of pulping water and waste water treatment water in desulfurization process. Though there is scaling risk if it is used as the flushing water and cooling water, the circulation waste water has been added in scale inhibitor and corrosion inhibitor and keeps flowing, which make it difficult to scale. Taking circulating discharged water as the desulfurization process water, the investment will increase by 100,000 yuan, but the annual cost can be saved by about 4.11 million yuan, and the environmental protecting and economic benefits are prominent.

Key words:

circulating discharged water, desulfurization process water, water quality, environmental protection