With pollution of water resource being serious day by day, the shortage of the water resource has already become the restriction factor of the electric industrial development of fire. Because the municipal sewage is because of the stability and dependability of its source, becoming the power plant can utilize one of the sources of water . Under such an backgrounds, this paper go on and leave target of punishing on water with city sewage treatment plant mainly, Regard achieving the purpose back to using in the circulation cooling water of thermal power plant as, adopt theory analysing and experimental study that the lime technology carries on the degree of depth and deals with, And has carried on successful application in the actual project. Result indicate it is simple, little investment cost technology for lime to deal with, It is fine to produce water result. 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 .
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