SYSTEM FOR DISCHARGE AND CLEANING OF SURFACE RUN- OFF Russian patent published in 2003 - IPC

FIELD: construction engineering; discharge and cleaning of surface run-off from roads and construction platforms. SUBSTANCE: system includes water drainage conduit, settling chamber divided into fine and coarse cleaning sections, biological pond consisting of shallow-water bioplateau and deep-water basin, filtering chamber located after deep-water basin and separated from it by filtering dam; proposed system is also provided with discharge conduit and additional filtering chambers: one filtering chamber is located in settling chamber between coarse and fine cleaning sections and other filtering chamber is located in front of bioplateau; each additional filtering chamber includes filtering material laid in layers at reduced filtering factor of each subsequent layer relative to previous one; filtering factor of each layer of chamber is no less than 1 m/day. EFFECT: simplified construction; improved quality of cleaning. 4 cl, 1 dwg