Pre-polymerised inorganic coagulants and phosphorus removal by coagulation - A review
Year: 1998
Type: review
Abstract: This paper reviews the use of pre-polymerised inorganic coagulants in water and waste-water treatment, and discusses the remova l of phosphorus by chemical precipitation and coagulation. Commonly used inorganic coagulants are aluminium or iron (III) based salts, but a range of hydrolysed Al/Fe species, and not the Al/Fe salt itself, are responsible for the removal of impurities fr om water. By the development and use of polymeric inorganic coagulants, the coagulation performance can be improved significantly in some cases. Chemical precipitation and coagulation in phosphorus removal are two different processes, with the former related t o the compound solubility and the latter depending on the destabilisation-adsorption mechanism. Presently, there is uncertainty concerning the mechanisms and overall performance of phosphorus removal by pre-polymerised metal coagulants.
Source: Water SA
Authors: Jia‐Qian Jiang, Nigel Graham
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2130055031