Ljungstrom air preheater is important equipment to recover waste heat and improve heat exchange efficiency for thermal power plant, steel industry and chemical industry.
容克式空气预热器是热力发电厂、钢铁和化工行业回收余热，提高换热效率的重要设备。
The onsite visit to large scale coal chemical waste water treatment zero emission plant will be arranged.
会议还将安排对大型煤化工水处理零排放装置的参观考察。
Coulostatic method has been adopted to determine chemical OxygenDemand (COD) in the waste water of Petrochemical Plant of Daqing Petroleum Administration.
大庆油田化工总厂废水中化学需氧量(COD)的测定采用库仑法。
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