Using the Method of Phyto-testing to Determine the Hazard Class of Waste

Abstract

The application of the method of phyto-testing to determine the hazard class of the waste (waste activated sludge from sludge beds, sawdust from natural acacia wood, beer malt spent, fresh chicken dung, sunflower husk), subjected to storage for several months. The values of the minimum effective (threshold) dilution, which has the effect of inhibiting root growth by 20 %, and the values of medium-effective dilution, inhibiting growth by 50 % compared to distilled water were determined. For sunflower husk and beer malt spent, a contradiction was established between the approved hazard class according to the FCCW and a certain hazard class according to the method of MP 2.1.7.2297-07, which indicates a change in the chemical composition of the waste that has been stored for a long period of time.