Mechanisms during suspended solids and phosphate concentration variations in wastewater coagulation process. Issue 19 (1st October 2016)

• Record Type: Journal Article
• Authors: Manamperuma, Lelum Duminda; Ratnaweera, Harsha Chandima; Martsul, A.
• Is Part Of: Environmental technology. Volume 37:Issue 19(2016)
• Page Start: 2405
• Page End: 2413
• Publication Date: 2016-10-01
• Subjects: Coagulants -- coagulation–flocculation -- particles -- phosphates -- coagulation mechanisms; Environmental engineering -- Periodicals; Environmental protection -- Periodicals; 628.05
• DOI: 10.1080/09593330.2016.1150354
• Languages: English
• ISSNs: 0959-3330

Abstract

ABSTRACT: Coagulation–flocculation process is one of the most commonly used treatment process in water and wastewater treatment. Particles (PA) and phosphates (P) removal are the main objectives in wastewater coagulation. There is a general agreement on the dominant mechanism of PA and P removal during coagulation. While it is agreed that the PA and P removal reactions are competitive and takes place simultaneously, there is no clear understanding on the ratio of distribution of coagulants among the PA and P removal. The ratio can be significantly influenced by the content of PA and P, in addition to other water and coagulant quality factors. This paper attempts to provide a qualitative ratio of coagulant distribution based on PA:P proportion in raw water and OH:Al ratio in coagulants.