Filter apparatus

摘要

Filters for separating solids from a liquid are disclosed. A first filter comprises a housing comprising a bottom wall, a side wall having a first end and a second end, and a door disposed along the first and second ends of the side wall and an end of the bottom wall; a first filter medium comprising a bottom panel, a side panel disposed along the side wall, and a flap extendable from the bottom panel outwardly between the door and the bottom wall; and a second filter medium disposed along the door. A second filter comprises a housing comprising a bottom wall and a side wall; a displaceable filter medium disposed along the bottom wall and the side wall of the housing; a first displacement actuator disposed in a space between the housing and the displaceable filter medium; and an air supply for directing air through the displaceable filter medium.

主权项

1. A dewatering and composting filter comprising:
a) a housing comprised of an inlet, a bottom wall, a side wall, and an outlet; b) a first filter medium comprised of a bottom panel disposed along the bottom wall, and a side panel disposed along the side wall; c) a first inflatable bladder disposed between the bottom wall of the housing and the bottom panel of the filter medium, and operable by a first control valve; d) a gas supply including a variable speed fan in communication with a space between the bottom wall of the housing and the first filter medium; e) a first temperature sensor and a first moisture sensor, each of the sensors being contactable with material disposed in a volume enclosed within the housing; and f) a programmable logic controller in electrical communication with the first control valve of the first inflatable bladder, the variable speed fan, the first temperature sensor, and the first moisture sensor; wherein the programmable logic controller includes an algorithm for operating the first inflatable bladder to dewater a sludge separated from a filtrate, and then operating the variable speed fan of the gas supply while receiving signals from the first temperature sensor and the first moisture sensor to convert the sludge to a compost.