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The scope for potential energy savings in the flocculation process
Author(s) -
Cairns R.,
Sharp E.,
Maher K.,
Jefferson B.
Publication year - 2012
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.2011.00291.x
Subject(s) - flocculation , turbidity , mixing (physics) , coagulation , environmental engineering , environmental science , water treatment , process (computing) , pulp and paper industry , chemistry , engineering , computer science , ecology , biology , physics , psychology , quantum mechanics , psychiatry , operating system
Water treatment plants traditionally use coagulation/flocculation process to remove organics and turbidity particles in drinking water. As a result of the chemical optimisation of the coagulation process having such a strong influence, it is believed that the current hydraulic conditions for flocculation cited under best practice could be out of date. A 450 Mld plant treating upland water was chemically optimised, and it was observed that the total mixing energy input could be reduced by 66% without any detrimental impact upon the clarified water being observed. Under the new mixing regime, energy costs could be reduced by £37 300 pa equating to approximately a 280 t reduction in CO 2 .
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