Offer

Highway settling tanks

Usage and Operation

Highway settling tanks are used to separate and stop sludge and petroleum-derived substances in the case of accidental spillage of large quantities of fuels. Separation of sludge is achieved by aiming the flow of sewage downwards at the inlet, reducing flow rates and gravity sedimentation. Separation of oil derivatives is achieved through floating gravity. Highway settling tanks are used primarily to pretreat rainfall sewage from roads and communication nodes, in areas at risk of accidental fuel spills from cisterns.

Construction

Highway settling tanks are made of precast concrete, reinforced concrete or plastic. Sewage enters the tanks through the inlet bend and is distributed through the entire tank. It then flows under the section which stops petroleum derived pollutants and is directed to the siphoned outflow. Highway settling tanks are equipped with a  float closure which serves as a protection not only against the release of pollutants into drain, but also in the case of a large inflow of petroleum derivatives. For the largest devices where the frames are delivered in elements  (B in the type of device), the equipment is assembled on construction site. Optionally, highway settling tanks can be equipped in grease level sensors.