A Preliminary Study on the Use of Xylit as Filter Material for Domestic Wastewater Treatment
2021
Marcin Spychała | Tadeusz Nawrot | Radosław Matz
The aim of the study was to verify two morphological forms (“angel hair” and “scraps”) of xylit as a trickling filter material. The study was carried out on two types of polluted media: septic tank effluent (STE) and seminatural greywater (GW). The basic wastewater quality indicators, namely, chemical oxygen demand (COD), biochemical oxygen demand (BOD<sub>5</sub>), total suspended solids (TSS), ammonium nitrogen (N<sub>NH4</sub>), and total phosphorus (P<sub>tot</sub>) were used as the indicators of treatment efficiency. Filtering columns filled with the investigated material acted as conventional trickling filters at a hydraulic load of 376–472 cm<sup>3</sup>/d during the preliminary stage, 198–245 cm<sup>3</sup>/d during stage I, and 184–223 cm<sup>3</sup>/d during stage II. The removal efficiency of the two morphological forms of xylit did not differ significantly. The average efficiencies of treatment were as follows: for COD, over 70, 80, and 85% for preliminary stage, stage I and stage II, respectively; for BOD<sub>5</sub>, 77–79% (preliminary stage); for TSS, 42% and 70% during the preliminary stage, and 88, 91, and 65% during stage I; for N<sub>NH4</sub>, 97–99% for stage I and 36–49% for stage II; for P<sub>tot</sub>, 51–54% for stage I and 52–56% for stage II. The study demonstrated that xylit was a material highly effective in wastewater quality indicators removal, even during the initial period of its use.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Directory of Open Access Journals