Post-treatment options for ozonation in tertiary municipal wastewater treatment
Daniel Sauter | Berliner Wasserbetriebe | Germany
In a pilot-scale study different post-treatment options for ozonation in tertiary wastewater treatment are investigated, focusing on organic micropollutant removal by biodegradation in deep-bed filters with different filter media (non-adsorptive media vs. granular activated carbon). Additional analyses of transformation products and microbial parameters will allow for a comprehensive assessment.
O3/BAC versus Chloramines: Innovative Pretreatment to Membranes and Enhanced Energy Efficiency of Potable Reuse Treatment Train
Dr. Robert Shane Trussell | Trussell Technologies, Inc. | United States
This study evaluated a new, innovative biological and organic membrane fouling control in potable reuse using O3/BAC as an alternative to chloramines. The results demonstrated that use of O3/BAC pretreatment offers significant improvements in the operating efficiency of the UF and RO membranes, and the energy-intensive UV/AOP system while continuing to demonstrate high standards of water quality.
Impact of operating conditions of an advanced wastewater treatment plant combining ozonation and granular activated carbon on antibiotic resistant bacteria and antibiotic resistance genes
Katarzyna Slipko | Vienna University of Technology, Institute for Water Quality and Waste Management | Austria
The impact of operating conditions in a full-scale multi-barrier advanced wastewater treatment plant combining ozonation and granular activated carbon on antibiotic resistance (AR) was assessed over one year of monitoring. Further investigations were carried out to reveal the effect of the specific ozone dose on AR. In addition, results were correlated with abatement of organic micropollutants.
Electro-Fenton treatment of real pharmaceutical wastewater: a feasibility study
Dr. Hugo Olvera-Vargas | National University of Singapore | Singapore
This work investigates the applicability of the electro-Fenton process (EF) to the treatment of a real industrial effluent obtained from a pharmaceutical company. The EF reactor was equipped with a conventional carbon brush cathode and two different anodes were compared, namely, a boron doped diamond (BDD) and a Ti/IrO2-RuO2 dimensionally stable anode (DSA).The results demonstrated the potential of EF to treat pharmaceutical effluents for reuse purposes using economically accessible electrode materials. Furthermore, the relevance of EF as a pre-treatment stage to produce biocompatible effluents has been evidenced, as well as the power of BDD to extend the treatment to quasi total mineralization.