Abstract
The purpose of the this study carried out at the Tiznit wastewater treatment plant (WWTP) is to evaluate the purification performance of the conventional stabilization ponds type process and, on the other hand, to improve the purification performance by using adsorption process based on novel inert natural materials of animal origin. This project is part of a sustainable development approach, aimed to improve the purification performance of WWTP by introducing low-cost, abundant and inexpensive solid inert biomaterials (SIBM). This adsorption process is recognized as one of the best water treatment techniques, more and more works are oriented towards the search for new materials, cheaper and having a good adsorbent potential. The results obtained with decanted raw wastewater (RWWD) and purified wastewater (PWW) are encouraging and show significant purification yields: 52 % and 48 % for sulfate ions and 43 % and 47 % for nitrate ions, respectively, for RWWD and PWW.
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