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Influence of selected changes in wastewater dosing mode to a sequencing batch reactor, on the efficiency of dairy wastewater treatment

100%

Janczukowicz W.

tom 12

Effect of constant magnetic field (CMF) with various values of magnetic induction on effectiveness of dairy wastewater treatment under anaerobic conditions

84%

Zielinski M. , Debowski M. , Krzemieniewski M. , Dudek M. , Grala A.

Polish Journal of Environmental Studies

2014

tom 23

nr 1

This study was undertaken in order to determine the effects of the constant magnetic field (CMF) on the effectiveness of dairy wastewater treatment under anaerobic conditions. It demonstrated that increasing the value of the magnetic flux in the analyzed range resulted in an increasing effectiveness of the fermentation process. Magnets with induction of 0.38 [T] elicited significant changes in the analyzed parameters of methane fermentation. The magnetic field (MF) was observed to positively affect the sedimentation process of anaerobic sludge, reduced COD concentration in the effluent, and biogas production rate. In the most effective variant, the content of suspended matter in the treated wastewaters was reduced by 26.1% and the effectiveness of COD removal increased by 14.0%, compared to the variant without the application of the physical factor. Magnetic induction of 0.431 caused significant changes in the analyzed parameters of the methane fermentation process.

Effect of the constant magnetic field on the composition of dairy wastewater and domestic sewage

67%

Krzemieniewski M. , Debowski M. , Janczukowicz W. , Pesta J.

nr 1

We investigated an effect of the direct impact of a constant magnetic field on wastewater properties modification. Wastewater from two sources (differing in physical and chemical properties) was used in the experiment. Analyses regarded the impact of a constant magnetic field on the properties of wastewater prepared from powdered milk and on the composition of sewage taken directly from municipal sewage system. The experiment was carried out in the laboratory scale with the use of the technological systems comprised of magnetic activators of liquids. An obvious and regular reduction was observed in COD (25-55%), chlorides (25–40%), N-NH4 (50-66%), P-PO4 to the values of 3.37-6.00 mg/dm3, and a considerable increase of Fe concentration. The parameters of both magnetically-treated wastewater types were modified to a similar degree and displayed analogous modification tendencies.