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Preliminary research on the effect of lime addition on the rheology of sludge

100%

Malczewska B.

Infrastruktura i Ekologia Terenów Wiejskich

2011

nr 11

Samples of excess sludge from wastewater treatment plants were investigated in order to determine the dependence of rheological parameters of sewage sludge on lime addition. Hydration of the sludge is one of its main features which determine sludge management and waste disposal cost. The rheological behavior of sludge is a key characteristic, since it determines the treatment processes. This research has evaluated the use of rheological properties for characterization and control of sludge and lime mixture flow behaviour. A laboratory investigation was conducted using rotating coaxial cylinder and several different gravimetric oncentrations of the investigated sludge. In order to describe the rheological characteristics, the 3-parameter Herschel-Bulkley model was applied. Rheological characterization is of great importance in sludge management, both in terms of biomass dewatering and stabilizing properties, and in terms of design parameters for sludge handling operations.

Wastewater treatment in the Slovak Republic

100%

Namer J., Drtil M., Bodik I., Hutnan M.

Polish Journal of Environmental Studies

1997

tom 06

nr 2

This paper reviews the present status of sewage, wasterwater treatment and water quality management in Slovakia. The impact of discharged wastewater on the quality of receiving waters is presented. Legislation in Slovakia is compared with European legislation concerning water quality effluent standards. Typical treatment methods used are described and the problems of wastewater monitoring discussed. The serious problems with sludge treatment and disposal are analyzed. Possible perspectives with the relation of size of wastewater treatment plants and the requirements of approved effluent standards are indicated. The suggested steps for improving the present situation in this field are presented.

Need of development of innovative methods of cyanobacteria disposal in stagnant waters in custody on water management development in Slovak Republic

80%

Fedorcakova M., Janekova J., Sebo J., Kovac J., Poor P.

Intercathedra

2011

tom 27

nr 1

Contribution is focused on problem of eutrophication of stagnant water, current situation in specified area and existing legislation in water management in Slovak Republic. It describes consequences of eutrophication, current state of natural swimming pools water quality in Slovakia, comprehensively evaluates summer tourist season, natural swimming pools in 2010 and stresses the need of developing new, economically less demanding and environmentally friendly methods that will be effective in fight against excessive growth of cyanobacteria water blooms.

Ograniczanie wyników

1 Infrastruktura i Ekologia Terenów Wiejskich

1 Intercathedra

1 Polish Journal of Environmental Studies

1 Bodik I.

1 Drtil M.

1 Fedorcakova M.

1 Hutnan M.

1 Janekova J.

1 Kovac J.

1 Malczewska B.

1 Namer J.

1 Poor P.

1 Sebo J.

2 2011

1 1997

Wyniki wyszukiwania

Preliminary research on the effect of lime addition on the rheology of sludge

Wastewater treatment in the Slovak Republic

Need of development of innovative methods of cyanobacteria disposal in stagnant waters in custody on water management development in Slovak Republic