Please use this identifier to cite or link to this item:https://hdl.handle.net/20.500.12259/85457
Type of publication: Straipsnis konferencijos medžiagoje kitose duomenų bazėse / Article in conference proceedings in other databases (P1c)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Strusevičius, Zenonas;Strusevičienė, Sigita Marija
Title: Investigations of the application of mineral filtrers for wastewater treatment on a farmstead
Is part of: Research for rural development. , [2007] (2007)
Extent: p. 204-209
Date: 2007
Keywords: Wastewater;Biogenic matter;Filtralite;Zeolite
Abstract: Highly polluted wastewater is formed on private farms. The wastewater contains Ntotal and Ptotal concentrations up to 150 mg l-1 and 30 mg l-1 respectively, which is 2-3 times higher than that contained in domestic wastewater. During the biological treatment of wastewater the removal of organic pollutants (BOD5 -biochemical oxygen demand and SS – suspended solids) is about 96 % and the treatment efficiency satisfies the environment protection standarts. However, the removal of biogenic pollutants is only 55 %, thus the residual pollution with biogenic substances exceeds the maximum allowable rate according to Ntotal and Ptotal for wastewater released into the environment. Currently, different natural and artificial powdery mineral materials (zeolite, filtralite, etc.) containing metals and carbon compounds are transported into Lithuania. Such materials could be used as Ntotal and Ptotal adsorbing filters. In respect of the filter load with pollutants, biologically pre-treated wastewater treatment efficiency of Ntotal and Ptotal was determined to be from 45 to 93 % and from 20 to 78 % respectively. Having filtrated the wastewater through a filter containing 50 % of zeolite and 50 % of filtralite, Ntotal and Ptotal removal efficiency was fluctuating from 18 to 65 % and from 51 to 92 % respectively. Having made the investigations with different loads of minerals, it was determined that Nl removal is more efficient in the zeolite mineral filter, while P removal is more efficient in the filtralite filter. In order to reach the best results of biogenic pollution removal, both mineral mixtures should be used for the load of the filter
Internet: https://hdl.handle.net/20.500.12259/85457
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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