WATER TREATMENT BY MULTISTAGE FILTRATION SYSTEM WITH NATURAL COAGULANT FROM Moringa oleifera SEEDS

Author(s)

Franco, Monalisa ; Silva, Gabriela K. E. ; Paterniani, Jose E. S.

• Document type: Journal article
• Source: Engenharia Agrícola; v. 32, n. 5, p. 9-pg., 2012-09-01.

Abstract

This study presents an evaluation of a pilot multistage filtration system (MSF) with different dosages, 131 mg L-1 and 106 mg L-1, of the natural coagulant extracted from Moringa oleifera seeds in pre-filtration and slow filtration stages, respectively. The system was comprised by a dynamic pre-filter unit, two upflow filters in parallel and four slow filters in parallel, and in one of the four filters had the filter media altered. The performance of the system was evaluated by monitoring some water quality parameters such as: turbidity, apparent color and slow filter load loss. The stages that have received the coagulant solution had better treatment efficiency compared with the steps without it. However, the direct application of the coagulant solution in the slow filter caused rapid clogging of the non-woven blanket and shorter career length. (AU)

• FAPESP's process: 07/57675-9 - Use of coagulant extracted from Moringa oleifera seed as auxiliary in water treatment by multistage filtration system
• Grantee: Monalisa Franco
• Support Opportunities: Scholarships in Brazil - Master