Ro plant, water treatment plant (wtp), sewage treatment plant (stp) with adsorbent and media based (fixed and floating) systems, dissolved air flotation (daf), sequence batch reactors and membrane bio reactors, packaged sewage treatment plants, filter press and bio gas plants, effluent treatment plant (etp), nano filtration system, tubular membrane filtration system, waste water recycling and zero discharge (reject management) plants.