Surface water from lakes and rivers requires removal of suspended solids to be suitable for cooling systems or to feed softeners, demineralizers or reverse osmosis units. The convention..
Surface water from lakes and rivers requires removal
of suspended solids to be suitable for cooling systems or to
feed softeners, demineralizers or reverse osmosis units. The
conventional method for removing these suspended solids is
gravity clarification.
Gravity clarifiers rely on chemical coagulants and
flocculants to agglomerate suspended solids large enough to
settle and be removed via blowdown. Surfaces of most
suspended particles are negatively charged, resulting in
particle repulsion. The coagulation process neutralizes this
surface charge. Inorganic coagulant chemicals such as
aluminum sulfate or ferric chloride
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