WASTE WATER TREATMENT APPARATUS MOUNTED IN SEWER MANHOLE Russian patent published in 2015 - IPC E03F5/04 E03F5/14 C02F1/40 B01D17/22 

FIELD: chemistry.

SUBSTANCE: disclosed waste water treatment apparatus includes, mounted in a sewer manhole 8, an open-top settling chamber 1 with a continuous lateral surface 5 and a bottom part 6 and a filtering chamber. The filtering chamber is mounted in the settling chamber such that the bottom parts 12 and 6 thereof are separated from each other, and a gap is formed between the lateral surfaces. The filtering chamber is divided by a continuous partition wall 4 into a lower filtering compartment 3, having a continuous lateral surface 11, and an upper open-top receiving compartment 2, having water passage openings 9 in the lateral surface. The filtering chamber has a bottom part 12 with water passage openings, and a filter material 13. The filter material 13 is placed in the lower compartment 3. Inside the settling chamber 1 and inside the lower compartment 3 of the filtering chamber there is a vertical overflow tube 15, having a continuous lateral surface 16, such that the overflow tube 15 passes through the bottom part 6 of the settling chamber 1 and the bottom part 12 of the lower compartment 3 of the filtering chamber, and its upper open-end portion 17 is located in the lower compartment 3 of the filtering chamber to allow water passing through the filter material 13 to fall into said end portion 17.

EFFECT: longer service life of the filter material before replacement thereof.

2 cl, 1 dwg