Sludge density index (SDI) of effluent treated by improved formula is below 5.0, and it would meet the quality requirement of the influent of following reverse osmosis unit.
经改进配方，处理的排污水的污泥密度指数(SDI)小于5.0，能够满足后续反渗透单元的进水要求。
Based on principle of reverse osmosis and used microcomputer 89c52 as controller, an automatic detection instrument of sludge density index (SDI) of water pollution is designed.
基于反渗透原理，以89c52单片机为控制器，设计了水污染指数中的淤积密度指数(SDI)的自动在线测试装置。
Based on principle of reverse osmosis and used microcomputer 89c52 as controller, an automatic detection instrument of sludge density index (SDI) of water pollution is designed.
基于反渗透原理，以89c52单片机为控制器，设计了水污染指数中的淤积密度指数(SDI)的自动在线测试装置。
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