Simultaneous Treatment of Graywater and Waste Gas in a Biological Trickling Filter

Abstract

Biological processors are typically used in liquid-and gasphase remediation as separately staged systems. This research presents a novel application of a biotrickling filter operated for simultaneous treatment of contaminants present in graywater and waste gas (ammonia and hydrogen sulfide). Liquid-and gas-phase contaminants were monitored via bioreactor influent/effluent samples over the course of a 300-day study. An oxygenbased bioassay was used to determine spatial location of the functional groups involved in the biodegradation of surfactants, dissolved hydrogen sulfide, and ammonium. Results indicated that a biotrickling filter is able to support the wide range of microbial species required to degrade the compounds found in graywater and waste gas, maintaining conversion efficiencies greater than 90% for parent surfactant compounds and waste gas constituents. These results provide evidence of an operational scheme that potentially reduces footprint size and cost of graywater/waste gas biotreatment. Water Environ. Res., 80, 2096Res., 80, (2008.

Digital Proxy of a Bio-Reactor (DIYBOT) combines sensor data and data analytics to improve greywater treatment and wastewater management systems

“…The composition of the GW simulant was based on previous studies 83,84 . SLES, the primary surfactant in the GW, was purchased as STEOL-CS330 (28.8% SLES) from Stepan Co. (Northfield, Illinois), all other compounds for the greywater recipe [85][86][87][88][89] were purchased from Sigma Aldrich (Atlanta, GA).…”