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zero liquid discharge techniques zldThis paper describes the study to the existing iron removal procedures as well as experimental work towards improving removal of liquified as well as particle iron. The study was accomplished 10 at groundwater treatment plant consisting of aeration, fast sand filtering and also tower oygenation. The study has two parts:A fragment finger print of the treatment, causing a metrology of bits breaking through the quick sand filtering. Little column experiments on the oxidation as well as filterability of iron. The fingerprint showed that operational occasions such as changing on/off of filters and also backwashing have a substantial influence on the quantity concentration of fragments breaking through the filter. A regularity plot of the various size varieties of particles suggests that generally the filterability of the middle size varieties (2– 7 µm) of bits was affected by switching over a filter on/off.