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The Nalco Water Handbook.ISBN: 0070458723Author: ,Publisher: McGraw-Hill ProfessionalSummary:With the nation looking toward a goal of ``zero discharge’’ in water pollutants by the early 1980s, this timely handbook is an ideal source of information for specialists and nonspecialists alike. It provides completely practical data and techniques in the four major water conservation and use areas: (1) water chemistry, sources, and contaminants; (2) unit operations and treatment; (3) industrial and municipal use of water and its disposal; and (4) special technology in water treatment.
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august0120
沙发
总结：1 高压泵在慢开阀、软起动器、变频器中选择一种即可
2006-05-17 15:19:17
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shuimuqgh
板凳
憋压会造成很大的压力啊
2006-05-15 15:42:15
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加载更多2 离心泵短时不怕憋，憋的时间长了泵内水流发热，很危险。
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即使别的没关系，法兰等连接的地方时间长了也容易滋水啊
而且如果用PVC管，那不是更危险了？？
望各位高手指教……
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