Manganese - Zeolite Filters
From Water Filters
Manganese zeolite filtering is a chemical treatment which enables to remove substances such as iron and manganese from water.
The treatment is realized with two different techniques: if the main purpose is the removal of iron, the system shall work in CONTINUOUS mode; for the removal of manganese the system shall work in DISCONTINUOUS mode. The water to be treated must be pre-oxidised with potassium permanganate and/or sodium hypochlorite in a tank upstream the equipment. The contact time between the chemical products and the substances to be oxidized shall be at least 20 minutes. The water treated this way enables the oxidation of iron and manganese in the tank, a pump sends the water to the zeolite column. The zeolite filter performs counterflow cleaning with water only, to remove the filtered substances. Il system in discontinuous mode, instead, operates regenerating the zeolites with potassium permanganate. No product shall be added to the water to be treated; the water is directly sent to the filter which oxidizes the iron and/or the manganese directly in the column. The removal of iron and manganese from water brings the zeolites to saturation, the equipment performs regeneration with permanganate to restore the original work conditions. The water which exits loaded with iron and manganese oxides is sent to the discharge. The amount of water produced for each cycle depends on several factors such as: iron and manganese to be treated, diameter of the filter, amount of zeolite used and type of regeneration (continuous or discontinuous).
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