Experimental investigation of a filter with natural sorbent charge for runoff cleaning from heavy metals and petroleum products
| Year | Volume | Issue | Start Page | End Page |
|---|---|---|---|---|
2006 | 14 | 1 | 31 | 36 |
| URI | Access Rights |
|---|---|
| https://hdl.handle.net/20.500.14911/149830 | |
| https://doi.org/10.3846/16486897.2006.9636876 | Viso teksto dokumentas (atviroji prieiga) / Full Text Document (Open Access) |
| https://journals.vgtu.lt/index.php/JEELM/article/view/7916 | Viso teksto dokumentas (atviroji prieiga) / Full Text Document (Open Access) |
| https://talpykla.elaba.lt/elaba-fedora/objects/elaba:6116456/datastreams/MAIN/content |
Atlikti eksperimentiniai sunkiųjų metalų ir naftos produktų šalinimo iš tirpalų kaip sorbentus naudojant gamtinius ceolitą ir vermikulitą tyrimai. Šiam tikslui naudotas sukurto lietaus nuotekų valymo įrenginio maketas. Filtro įkrova – 25 kg gamtinio ceolito ir 2 kg vermikulito. Eksperimentiniam tirpalui paruošti sunaudota 20 l distiliuoto vadens bei 1 g/l sunkiųjų metalų Cu, Pb, Zn, Ni ir Mn bei po 200 ml benzino ir dyzelino. Eksperimentinis tirpalas įpiltas į filtrą per piltuvėlį, tekėjo pro ceolito ir vermikulito sluoksnius. Pirmasis mėginys paimtas iš čiaupo iškarto po tirpalo sąlyčio su filtro įkrova – po 1 min., antrasis – po 5 min., o kiti – po 10, 20, 30, 60, 120, 240, 360 ir 720 min. Filtrato mėginiai analizuoti TOG/TPH analizatoriumi, kuris nustato naftos produktų koncnetraciją tirpale. Didžiausias filtro efektyvumas – 99,7 % pasiektas šalinant naftos produktus. Sunkieji metalai taip pat pašalinti efektyviai (pvz., Pb – 98,6 %).
An experimental investigation on the removal of heavy metals (HM) and petroleum products (PP) from a solution by natural sorbents zeolite and vermiculite was carried out in a laboratory pilot-scaled test bench. For this purpose a model of a runoff filter which was invented by the authors was used. 25 kg of natural zeolite and 2 kg of vermiculite were used for the filter charge. An experimental solution of 20 l contained 1 g/l of HM Cu, Pb, Zn, Ni and Mn nitrates and 200 ml of PP gasoline and diesel. The solution was poured into the filter through a funnel and passed over natural zeolite and vermiculite media. The first sample was taken through a sample mixer tap immediately after the contact of the experimental solution with the charge media, the second sample was taken after 5 min, then after 10, 20, 30, 60, 120, 240, 360 and 720 min. TOG/TPH analyser was used for measuring concentration of filtrate samples. The highest efficiency of 99,7 % was reached for PP removal from water.