Transportation and surface runoff treatment

Surface water runoff are characterized by specific physicochemical composition, which depends on the area of water disposal. Surface runoff in Russia and other foreign countries characterized by high concentration of suspended solids, petroleum products, high chemical oxygen demand and etc. This article provides data about foreign and Russian compact filters. Filters are installed in the water receiving sumps of the storm sewage system. Analysis of efficiency of different filter construction has been conducted. As a result of this analysis it is determined, that its efficiency, purification capacities and resource are highly limited, while its operating costs are quite high. Stationary surface runoff treatment plants are more reliable, and allow to reach purification level, which is required to dispose surface runoff into water objects. Composition of treatment plants depends on amount of surface runoff and transportation conditions. This article provides results of visual observation of sewer collectors condition, which are used to transport surface runoff to treatment plants, and its common defects. This article also provides results of study of structure and composition of sediment, which is found inside the sewage collector. It is determined, that size of sediment particles equals to 3-4 mm and its density - 2.3 g/sm³. Main elements of the sediment are silicon and oxygen, but there are aluminum, calcium and sodium additives.