Clean water startup Ostara has built a new sewage treatment technology that reduces water pollution and saves moneyIt may be tricky to see dollar signs or green qualities when you think about sewage, but Vancouver-based company Ostara has found a way to connect the three by pulling commercial value from waste water. Its technology harvests phosphorus and ammonia from municipal sewage treatment plants and turns it into fertilizer pellets. The proc ...
http://www.theguardian.com/sustainable-business/value-sewage-technolog
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