Abstract: Apparatus and method for converting heat to electrical energy by the use of one or more capacitors having temperature dependent capacitance. The capacitor is cycled between relatively high and relatively low temperatures by successive thermal contact with relatively high and relatively low temperature portions of a heat transfer medium having a temperature gradient therein. Upon heating of the capacitor, the capacitance thereof is reduced, so that a charge therein is caused to expand into associated external circuitry in which it is available to do electrical work. The capacitor is then cooled and recharged and the cycle is repeated. The electrical output of the capacitor results from the regenerative delivery of heat to and removal of heat from the capacitor by the heat transfer medium, and efficient conversion of heat to electric energy is thereby effected.

Abstract: Improved clarity in treated wastewater is achieved by adding a flocculating agent following screening by fine mesh screening means, preferably a centrifugal screen separator. The effectiveness of the separator is improved, in turn, by preceding it in the direction of liquid flow by a corrugated plate interceptor to remove greases and oils. Preferably, fine mesh screening is carried out by two separate screening devices, one being a high liquid volume centrifugal screen strainer, and the other being a mechanically self-cleaned low liquid volume device. Wastewater is delivered to a thickener, preferably a corrugated plate separator, the thickened product being delivered to the low liquid volume device, and the supernatant being delivered to the centrifugal screen strainer. The corrugated plate interceptor not only acts as a thickener, but also eliminates grease and oil, which would interfere with the operation of the centrifugal screen strainer.

Abstract: Improved clarity in treated wastewater is achieved by adding a flocculating agent following screening by fine mesh screening means, preferably a centrifugal screen separator. The effectiveness of the separator is improved, in turn, by preceding it in the direction of liquid flow by a corrugated plate interceptor to remove greases and oils. Preferably, fine mesh screening is carried out by two separate screening devices, one being a high liquid volume centrifugal screen strainer, and the other being a mechanically self-cleaned low liquid volume device. Wastewater is delivered to a thickener, preferably a corrugated plate separator, the thickened product being delivered to the low liquid volume device, and the supernatant being delivered to the centrifugal screen strainer. The corrugated plate interceptor not only acts as a thickener, but also eliminates grease and oil, which would interfere with the operation of the centrifugal screen strainer.

Abstract: Improved clarity in treated wastewater is achieved by adding a flocculating agent following screening by fine mesh screening means, preferably a centrifugal screen separator. The effectiveness of the separator is improved, in turn, by preceding it in the direction of liquid flow by a corrugated plate interceptor to remove greases and oils. Preferably, fine mesh screening is carried out by two separate screening devices, one being a high liquid volume centrifugal screen strainer, and the other being a mechanically self-cleaned low liquid volume device. Wastewater is delivered to a thickener, preferably a corrugated plate separator, the thickened product being delivered to the low liquid volume device, and the supernatant being delivered to the centrifugal screen strainer. The corrugated plate interceptor not only acts as a thickener, but also eliminates grease and oil, which would interfere with the operation of the centrifugal screen strainer.

Abstract: An improved electrode assembly for use in electrolytic flotation for wastewater treatment comprises a series of overlying layers of foraminous mesh arranged in substantially horizontal planes, wherein electrically conductive mesh layers constituting the anode and cathode are maintained in closely spaced relationship with each other, but are prevented from coming into direct contact with each other by one or more insulating mesh layers.