SEWAGE TREATMENT METHOD Russian patent published in 2004 - IPC

FIELD: treatment of sewage systems including lavatory and sludge remover.

SUBSTANCE: method involves adding precipitating agent selected from iron salt and aluminum salt in sewage supplied to lavatory bowl; water flushing of lavatory bowl; directing sewage, water and precipitating agent into sludge remover through outlet tube extended to sludge remover, precipitating phosphate and binding phosphates with obtaining hydroxide in deposits separated inside sludge remover. If solid substance is used as precipitating agent it may be suspended to lavatory bowl rim. Liquid precipitating agent may be distributed in doses into lavatory bowl during flushing thereof with the use of flushing means or by reducing water level when flushing lavatory bowl. Sewage is directed to sludge remover through outlet pipe connected to low part of sludge removal under outlet orifice thereof. Iron and aluminum salts are selected from group including sulfates, chlorides and nitrates thereof.

EFFECT: possibility of precipitating phosphate and binding organic substance presented in waste water.

6 cl, 1 dwg