| Abstract [eng] |
The agriculture sector is one of the top 3 water polluters. Growing worldwide pressure on water quality, increasing number of water treating and reclamation technologies helps to reduce contaminants in many fields. But agricultural machinery rinse water doesn’t have many options for easily accessible water treatment technologies. Usually, biofilters with biomixture are used for this type of water treatment. However, biofilters could be maintained for a limited time. And there is not much research on biomixture improvements. For this reason, research in this field was investigated. The removal of pesticides using three types of biofilters rinsed with agricultural machinery to rinse wastewater was investigated in the operation of three parallel columns. Column 1 – biomixture; Column 2 – biomixture with activated carbon (AC) layer; Column 3 – biomixture + AC with slow sand filter layer (SSF). The main purpose of the experiment was to determine the best performing column. To evaluate the conditions for the best microbiological performance, influent (from agriculture machinery rinse water) and effluent pH, Turbidity, ATP, Microbiological activity on agar plates and DOC were made. To evaluate the removal performance of pesticides, influent and effluent water samples were analyzed for pesticide concentrations. To evaluate biofiltration stability, influent water samples and 3 effluents of 4 months were analyzed. Taken together, these findings suggest that column 2 had the best conditions for biological activity in biofilter, it also showed highest pesticides removal efficiency and the most robust conditions in overall comparing with other two columns. |
