Ion Exchange [India] Ltd supplies Packaged Sewage Treatment Plant. Ion Exchange [India] Ltd. Is ISO 9001:2000 certified. INDION Packaged Sewage Treatment Plant [NGPSTP] incorporates unique combination of lamella plate technology and aeration that results in a ready-to-operate pre-fabricated solution. The lamella plates in the tank aid in reducing the suspended solids by 75% and the BOD by 25% after which it goes through aerobic treatment. The Packaged Sewage Treatment Plant is available in a modular design with capacities from 10 -100 m3/day. The plant requires minimum power and chemicals and is ideal for hotels, restaurants, holiday resorts, golf and country clubs, housing complexes, townships, national parks, industrial estates and existing plant up-gradation.