Abstract: Apparatus and method for injecting media purifying mixtures into process equipment in precise, discrete, volumetric quantities. Purifying mixtures may be added at selectively determinable time intervals, or responsive to an operating characteristic of the system. The total amount of purifying material may be accurately controlled by varying the number of fixed volumetric units injected, or by varying the concentration of the purifying material in the mixture. The apparatus includes provision to assist injection of said units into said process equipment, while providing apparatus and methods to prevent the supply lines from clogging.

Abstract: A continuous plating bath treatment system directs contaminated plating solution through a specially prepared filter medium and returns the filtered solution to service. The filter medium is a calendered polyester material provided in continuous roll form and is automatically replaced at regular intervals. As a new filter medium segment is drawn into position, a layer of carbon is deposited thereon to provide a chemical filtering element, thus providing chemical and mechanical filtration. Carbon is supplied from a supply hopper by vibrators; adjusting the rate at which vibration occurs conveniently allows adjustment of the volumetric flow of carbon. A support platform is included to hold the filter medium in a substantially horizontal orientation to receive the additional filter material. A reel mechanism collects spent segments of filter medium for ease of disposal or possible recycling.

Abstract: A continuous plating bath treatment system directs contaminated plating solution through a specially prepared filter medium and returns the filtered solution to service. The filter medium is a calendered polyester material provided in continuous roll form and is automatically replaced at regular intervals. As a new filter medium segment is drawn into position, a layer of carbon is deposited thereon to provide a chemical filtering element, thus providing chemical and mechanical filtration. Carbon is supplied from a supply hopper by vibrators; adjusting the rate at which vibration occurs conveniently allows adjustment of the volumetric flow of carbon.