论文部分内容阅读
废弃物可以分为两类,一类是属於固体的,叫做垃圾;一类是属於液体的,称为污水。无法和液体分离开的固体废物,则属於污水的范围之内。所以简单地说,污水是一切液体废物和无法与液体分离的固体废物的总称。如果把污水的范围再明确地归并一下,又可以概括为雨水、粪水和废水三种。雨水是指落到地面以后的雨水和雪水,在污水里占的比例最大,但污浊程度较轻,只要能加以适当的排泄,不使停积泛滥,对于人类的损害不大。粪水是指粪池内流
Wastes can be divided into two categories. One is solids, called rubbish, and the other is liquids, called sewage. Solid waste that cannot be separated from the liquid falls within the scope of the sewage. So simply speaking, sewage is the general term for all liquid wastes and solid wastes that cannot be separated from liquids. If the scope of the sewage is clearly merged, it can be summarized as rainwater, manure and wastewater. Rainwater refers to the rainwater and snow water that fall after the ground. The largest proportion is in sewage, but the degree of pollution is light, so long as it can be properly excreted without stopping the flooding, the damage to humans is not great. Manure water refers to the flow in the septic tank