Abstract: A filter (10) includes a receptacle (12) defining a chamber (14). A granular filtering medium (16) is contained in the chamber (14) of the receptacle (12). A disrupter arrangement (18) is mounted in the chamber (14) of the receptacle (12), the disrupter arrangement (18) serving to disrupt agglomeration of the granular filtering medium (16) within the chamber (14) of the receptacle (12).

Abstract: A filtration system (10) includes a filter (12) comprising a receptacle defining a chamber and a granular filtering medium contained in the chamber of the receptacle, the receptacle further defining an opening (22). An injection pump (26) is in communication with the opening (22) for injecting waste water to be treated into the chamber of the receptacle, the injection pump (26) being configured to pump the water into the chamber of the receptacle at a first flow rate. A discharge pump (32) is also in communication with the opening (22) for discharging water from the chamber of the receptacle, the discharge pump (32) being configured to discharge the water from the chamber of the receptacle at a second flow rate which is lower than the first flow rate of the injection pump (26).

Abstract: A filter (10) includes a receptacle (12) defining a chamber (14). A granular filtering medium (16) is contained in the chamber (14) of the receptacle (12). A disrupter arrangement (18) is mounted in the chamber (14) of the receptacle (12), the disrupter arrangement (18) serving to disrupt agglomeration of the granular filtering medium (16) within the chamber (14) of the receptacle (12).

Abstract: The invention provides a process and apparatus for the recovery of heat energy from wastewater. Wastewater, for example grey water from a domestic residence, is introduced to a detention chamber, which provides effective decoupling between the introduction of new wastewater and the demand for heat energy from its ultimate application. A heat exchange surface, in contact with the wastewater on one side and a working fluid on the other, extracts heat from the detention chamber through thermal conduction and the working fluid is transferred, via a heat pump, to a second heat exchange surface. The second heat exchange surface, in contact with the working fluid on one side and heat energy storage media on the other, transfers heat energy to the storage media through conduction. Heat energy can then be extracted from the storage media for applications including heating of potable water, or provision of building heating.