The effect of membrane unit construction, membrane aeration, back washing, and chemical cleaning on membrane fouling was investigated.
研究了膜组件构造、膜曝气、反冲洗和化学清洗对膜污染的影响。
Through comparison of steel and thermal system between supercritical and ultra supercritical units, the principles of ultra supercritical unit chemical cleaning are explained.
通过对超临界和超超临界机组使用钢材和热力系统的对比，说明了超超临界机组的化学清洗原则。
Two controlled circulation boilers were installed in Dagang Power Plant technique updating engineering. Chemical cleaning was achieved before start of the boiler unit.
大港发电厂技改工程安装两台强制循环汽包锅炉，机组启动前进行了化学清洗。
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