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Investigations of re-hydration increase of dried sludge

100%

Wichowski P., Rozbicki T.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

2013

tom 45

nr 2

The main aim of the research was to determine a susceptibility of a dried sludge to a rehydration increase. The paper presents the results of investigations for a sludge which had been dried to ca. 86% of dry mass and stored in an airy place under roof during 2.5 years. As well, trials were carried out for a completely dried sludge (0% of water), stored outside under roof as well as inside in a laboratory room. To determine a maximum level of humidity increase, the results of re-hydration increase were presented for a sludge stored in conditions of capillary ascent. Additionally, a density, porosity and bulk density were determined for the investigated sludge.

Aerobic sludge digestion in the presence of chemical oxidizing agents. Part II. Fenton's reagent

84%

Barbusinski K., Filipek K.

Polish Journal of Environmental Studies

2000

tom 09

nr 3

Aerobic sludge digestion in the presence of Fenton's reagent and hydrogen peroxide was examined. Fenton's reagent considerably improved the aerobic digestion process in comparison with hydrogen peroxide as well as classical aerobic digestion. Application of Fenton's reagent also led to improvement of settling and dewatering properties of sludge and much better clarity of supernatant. Its drawback, however, is the formation of chemical precipitate and an apparent decrease in pH which might inhibit biochemical processes important for aerobic digestion efficiency.

Ograniczanie wyników

1 Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

1 Polish Journal of Environmental Studies

1 Barbusinski K.

1 Filipek K.

1 Rozbicki T.

1 Wichowski P.

1 2013

1 2000

Wyniki wyszukiwania

Investigations of re-hydration increase of dried sludge

Aerobic sludge digestion in the presence of chemical oxidizing agents. Part II. Fenton's reagent