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Shamim, Shahin
Sewage sludge is a byproduct of wastewater treatment plants. It is a kind of waste. however, it contains several valuable nutrients like phosphorous and nitrogen that are used to rich the soil as a fertilizer compound. On the other hand, it contains
Externí odkaz:
http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-29596
