Description

Carbon Filtration is part of the water purification Pre-Treatment (Before Reverse Osmosis). The Carbon Filtration System works through adsorption to remove free chlorine and chloramines from the Municipal incoming water supply. The system protects the RO and most importantly, the Patients on Hemodialysis, from Chlorine and Chloramines. The system consists of at least 2 properly sized pressure vessels (tanks) which are filled with predetermined volumes of carbon. The tanks are connected in series with tank #1 adsorbing the entire load (worker) and tank #2 performing a polishing task (polisher) while providing back-up capability.

Carbon filtration is based upon a naturally occurring phenomenon called adsorption, in which molecules of a liquid or gas are trapped by either the external or internal surface of a solid. Activated carbon has a very high internal surface area and thus is an ideal material for adsorption. Raw water quality can be improved with the removal of trace components.

Carbon filters are backwashed periodically (every other day) to expose new adsorption sites in the media. After backwash, a down-flow rinse prepares the media for service.

Carbon filtration consist of at least 2 properly sized pressure vessels (tanks) which are filled with predetermined volumes of carbon. In most systems, two properly sized, backwashable carbon filters are connected in series with tank #1 adsorbing the entire load (worker) and tank #2 performing a polishing task (polisher) while providing a back-up capability.

Each carbon filter in the system has a 7 day calendar time clock to control backwashing. The controller can be set to backwash at pre-set times on specific days, giving the user maximum flexibility. The controller has an interlock feature to prevent the RO from running during the backwash cycle. When backwashing the RO will not run due to the interlock.

The carbon selected is of the highest quality available and meets our demanding specifications for chlorine/chloramine removal. The carbon is granular activated, acid washed, and designed for the purification of aqueous liquids which may be sensitive to acid soluble constituents such as iron.