INSTALLATION FOR PURIFICATION OF THE WASTE WATERS Russian patent published in 2007 - IPC C02F3/12 

FIELD: environmental protection; devices for purification of the waste waters.

SUBSTANCE: the invention is pertaining to the devices used for purification of the urban waste waters characterized by the sharp variability of their volumes, contents of the organic pollutions or periodicity of their arrivals. The installation contains the after-purification block, which body is made in the form of the reservoir, inside which there is the inlet baffle chamber with the trash-catching devices, the aerotank and the secondary settling tank. At that the fitting pipe of the recycling water of the aerotank is located inside the body of the inlet baffle chamber, and the fitting pipe of the clarified water of the secondary settling tank is brought out beyond the limits of the body of the inlet baffle chamber. At that the after-purification block contains the located inside the sandy-gravel filter system of the drain pipes connected among themselves by the common manifold, which is connected by the pipe to the reservoir containing the dosing device with the decontamination solution and the fitting pipe of the purified water. The fitting pipes of the recycled water supply rate of the aerotank and clarified water of the secondary settling tank is set from the condition to provide the water aeration both in the inlet baffle chamber and in the after-purification block. The technical result of the invention is the increased quality of the waste waters purification and efficiency of the installation operation due to the waste waters additional saturation with oxygen and the following waste waters after-purifications in sandy-gravel filter.

EFFECT: the invention ensures the increased quality of the waste waters purification, the increased efficiency of the installation operation due to the waste waters additional saturation with oxygen and the following waste waters after-purifications in sandy-gravel filter.

2 cl, 3 dwg