Applicated Research Of Lime Softening And Micro Filtration Technology To The Circulating Cooling Sewage Of Power Plant

With the pollution and shortage of water resource being serious day by day, water resource has already become the restriction factor of the power industry. Recycling cooling water takes great proportion in the power plant water dosage, and the recycling cooling water blowdown always lost so much during the process of circulating, that the potential of saving the cooling water was great. Lime softening and Microfiltration were used to treat the Baoding power plant circulating cooling sewage so as to use it for the make-up circulation water. The theory of lime softening and MF was analyzed and experimentation and research was carried through to the actual project. The results of the project showed that lime softening could effectively reduce the rigidity and hardness of the circulating cooling water. At the same time, the MF could mostly wipe off the suspended particles and reduce the content of colloid in the circulating cooling water. The SDI of output water could be ensured fewer than 4. The worked water fufiled the very request of the water quality of the plant.The research and development of this technology will open up a new way in order to solve the water resource of power plant problem of our country.