Page 77 - Bluebook Sereco english

Sand - Grease removers

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The process for sand and grease removal in a civil or formation of foams as they perform a preliminary aer-
industrial water treatment plant is usually placed just ation of the sewages. The specific sheets give any infor-
downstream the screening unit and before the depu- mation required for a correct dimensioning and selec-
ration treatments. A sand trap which operates per- tion of the sand-grease remover which better complies
fectly results in minimize the occurrence of clogging with the specific requirements.
and wearing problems for the pumps, if any, installed Any models are sized for a sewage flow, at the normal
downstream. operating conditions, that allows the precipitation and
The range of the products proposed for the sand and extraction of the only sands.
grease removal allows the removal of sands from We wish to point out that the sand removal and
sewage and the possibility to discharge them with a degreasing process can also be carried out directly by
high percentage of dry product and minimum quanti- the compact sewage pre-treatment station FCSDS
ty of organic substance; as regards several type of sand type, whose description is given in the specific sec-
traps, the contemporaneous removal and elimination tion. Moreover, the removal of floating oil and grease
of oily substances and greases are carried out. This spe- can be also carried out by means of different equip-
cial treatment, beside reducing the organic load for the ment of SERECO production, such as RC chain
subsequent treatment processes, noticeably reduces the scrapers, etc.