Pre-evaporative fenton remediation of treated municipal wastewater for reuse purposes.
The present study explored the application of evaporative technology as an alternative desalination technique for wastewater treatment plant effluent. In the experiments carried out, it was shown that evaporation allowed for extensive decontamination of wastewater treatment plant effluent as most inorganic and organic contaminants were completely removed. Ammonia could be retained in the concentrate when pH was adjusted to values lower than 4; however this led to increased nitrite volatility due to the formation of nitric oxide. Using an electronic nose, it was observed that evaporation gave rise to a change in odour quality and quantity due to volatilisation of the volatile organic compounds present in the effluent. Remediation of these components was carried out by Fenton oxidation prior to evaporation. A high removal was observed under the applied conditions of Fe2+ = 25 mg l-1, H2O2 = 50 mg l-1, pH = 3 and a reaction time of 2 hours.
Van Hege
K
K
Laboratory for Microbial Ecology and Technology (LabMET), Ghent University, Coupure Links 653, B-9000 Ghent, Belgium.
Dewettinck
T
T
Verstraete
W
W
D003247:Conservation of Natural Resources; D004581:Electronics; D009812:Odorants / Q000032:analysis; D009930:Organic Chemicals; D010084:Oxidation-Reduction; D012965:Sodium Chloride / Q000737:chemistry*; D014835:Volatilization; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*
D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; D012965:Sodium Chloride