近几年，被称为“白色污染”的塑料方便袋，给城市排水造成极大的危害。塑料方便袋抗腐蚀性极强，又有很强的纤维韧性，真是撕不烂扯不断，一剐一大溜，一糊一大片。机泵叶轮常被堵得严严实实，使水泵一点水都排不出去。拦得格栅常被其称得满满的，使格栅两边产生活差，进而被污 In recent years, plastic convenience bags, known as “white pollution,” have caused great damage to urban drainage. The plastic bag is highly resistant to corrosion and has a strong fiber toughness. It is really tearing, tearing, and tearing. The impeller of the pump is often blocked so that the pump does not drain out. Trapped grills are often referred to as full, causing liveness on both sides of the grille, which in turn is contaminated.