Identyfikatory
Warianty tytułu
Efficiency of coagulation sludge dewatering on a filter press
Języki publikacji
Abstrakty
The investigated sludges were produced during alum coagulation and filter backwash. Samples were collected in two Upper-Silesian water treatment plants - the Waterworks of Strumien and the Waterworks of Będzin. The sludge samples were dewatered using a model filter press which made use of rubber membranes to remove residual water. The sludges coming from the two water treatment plants differed in volatile solids content, which ranged from 14 to 20% dry wt. and from 40 to 60% dry wt. for Strumien Waterworks and Będzin Waterworks, respectively. The highest efficiency ofdewatering was obtained by squeezing (with the use of membranes) in the final stage of the press operation cycle. The filtration cakes had a homogeneous structure. The efficiency of thickening and dewatering depended on the composition of the sludge. Thus, the samples collected at the Strumien Waterworks displayed a high mineral matter content. After thickening, water content amounted to 94% to approach 35% afterdewatering on the filter press. The sludge samples coming from the Będzin Waterworks were characterized by a high volatile solids content and a water content of 98% and approximately 60% after thickening and dewatering, respectively. The dewatering process was successfully aided by cation or onion poly electrolytes. The application of lime upgraded the quality of the filtrate from the dewatering process.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
61--64
Opis fizyczny
Bibliogr. 3 poz., rys., tab.
Twórcy
autor
- "Aquacomp" Sp. z o.o. Warszawa, ul.Słomińskiego 1
Bibliografia
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPO2-0005-0054
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