Evaluating and improving the efficiency of drinking water treatment plants for surface water by using natural coagulants.

Alum application in water treatment as a coagulant facility is a linked to long-term human health problems. Also, using alum to purify water for human consumption is not cheap. Moringa oleifera seed powder (a natural plant coagulant) was tested as a potential alternative to alum dosage in water treatment to remove turbidity at the Water Treatment Plant project 6 in Diwaniyah Governorate, Iraq. Samples were taken from the Diwaniyah River for this study, in addition to the flash mixing basin and storage water from the Water Treatment Plant Project 6 in Diwaniyah Governorate. Tests were conducted for four months with turbidity values spanning 20–50 NTU the study found that replacing alum with Moringa oleifera seed (a tree that grows naturally in Diwaniyah Governorate, Iraq) did not have any negative impact on human health and removed turbidity from drinking water with a high efficiency of about 88.22%. Most of the time, the turbidity was low enough to meet the standards of Iraqi Drinking Water Standard No. 417 of 2001. [ABSTRACT FROM AUTHOR]