Whey concentration system. While making paneer there is lots of water coming from paneer which contains whey protein.you can't release that waste water to any open place. So you need to treat that waste water in ETP plant. So we have system by which you can earn money from that effluent. You can concentrate that whey protein and by doing spray dryer, you can make powder of that. And you can sell that whey protein powder in very high rate in market If you have any inquiry like this, pls let us know