聚丙烯工业废水排放的治理措施

在利用间歇式液相本体法工艺生产聚丙烯时,易产生大量废水,包括闪蒸水环真空泵排放水、聚合釜轴封冷却水排放水、聚合升温用热水罐溢流水等。应最大限度地减少废水的排放量。已经采取的废水减排措施包括:对于真空泵逐渐调小供水量(即减少了排放量);将轴封冷却水收回重复利用;维持热水罐的水位稳定,避免产生溢流。采取上述措施在满足生产要求的同时,最大限度地减少了废水排放量。

Some Measures for Controlling Drain off Wastewater Produced from Polypropylene Industry

During production of polypropylene with intermittent liquid-phase mass polymerization, there produced a lot of wastewater containing drain off water from annular pump, chilled water for shaft seal and overflow from hot-water tank. It is necessary to reduce wastewater displacement. Some measures are taken in the production of polypropylene, such as reduction of displacement of wastewater in annular pump, recovery and reuse of chilled water for shaft seal and keeping stable level of heat water tank. In this way, the displacement of wastewater is greatly reduced while meeting the need of polypropylene production.