Advanced Treatment of Campus Sewage...
257
4.3 Treatment Effect on Water Quality by MW/UV/O 3
Under the operating conditions of 450 W microwave power, two electrodeless UV
lamps (with a UV intensity at 254 nm being 1.04 mW/cm
2 and 2 min reaction time),
the water quality of treated effluent by MW/UV/O 3 reactor is shown in Table 2. The
removal efficiency of bacteria, color, and odor reached over 99%. The total number
of bacteria, chroma and odor threshold of the effluent was kept at a very low level,
which can meet the requirements of reclaimed water for miscellaneous use based on
the standards of China (GB 18918-2002) and USA (EPA-820-F-12-058).
5 Conclusions
This study has demonstrated that MW/UV/O 3 process can effectively remove the
bacteria, color, and odor in the outflow from the MBR process, and the water quality
of the final effluents meets the requirements for miscellaneous use in daily life.
Two important technical parameters, microwave power and UV light intensity, were
optimizing, and the medium values, 450 W and 1.04 mW/cm
2 , are the optimal ones,
under which high efficiencies of disinfection, decolorization, and deodorization can
be achieved with relatively lower energy consumption. The proposed MW/UV/O 3
technology has a high feasibility for the advanced treatment of campus sewage, and
the reclaimed water can be used for multipurpose such as campus miscellaneous
water consumption and scenic environment use. This is an important solution for
sustainable operation and management of green campus.
Acknowledgements This project was supported by POWERCHINA HUADONG Science and
Technology Project (KY2016-02-04), National Natural Science Foundation of China (41701541),
and Shanghai Pujiang Program (17PJ1400900).
References
Agulló-Barceló, M., Polo-López, M. I., Lucena, F., Jofre, J., & Fernández-Ibáñez, P. (2013). Solar
advanced oxidation processes as disinfection tertiary treatments for real wastewater: Implications
for water reclamation. Applied Catalysis, B: Environmental, 136–137, 341–350.
Aieta, E. M., & Berg, J. D. (1986). A review of chlorine dioxide in drinking water treatment.
Journal-American Water Works Association, 78, 62–72.
Al-Shamma’a, A. I., Pandithas, I., & Lucas, J. (2001). Low-pressure microwave plasma ultraviolet
lamp for water purification and ozone applications. Journal of Physics D, 34, 2775.
Bergmann, H., Iourtchouk, T., Schöps, K., & Bouzek, K. (2002). New UV irradiation and direct electrolysis—promising methods for water disinfection. Chemical Engineering Journal, 85, 111–117.
Cecili, A., & Claudio, L. (2003). Wastewater disinfection with PAA and UV combined treat ment:a
pilot plant study. Water Research, 37, 2365–2371.
257
4.3 Treatment Effect on Water Quality by MW/UV/O 3
Under the operating conditions of 450 W microwave power, two electrodeless UV
lamps (with a UV intensity at 254 nm being 1.04 mW/cm
2 and 2 min reaction time),
the water quality of treated effluent by MW/UV/O 3 reactor is shown in Table 2. The
removal efficiency of bacteria, color, and odor reached over 99%. The total number
of bacteria, chroma and odor threshold of the effluent was kept at a very low level,
which can meet the requirements of reclaimed water for miscellaneous use based on
the standards of China (GB 18918-2002) and USA (EPA-820-F-12-058).
5 Conclusions
This study has demonstrated that MW/UV/O 3 process can effectively remove the
bacteria, color, and odor in the outflow from the MBR process, and the water quality
of the final effluents meets the requirements for miscellaneous use in daily life.
Two important technical parameters, microwave power and UV light intensity, were
optimizing, and the medium values, 450 W and 1.04 mW/cm
2 , are the optimal ones,
under which high efficiencies of disinfection, decolorization, and deodorization can
be achieved with relatively lower energy consumption. The proposed MW/UV/O 3
technology has a high feasibility for the advanced treatment of campus sewage, and
the reclaimed water can be used for multipurpose such as campus miscellaneous
water consumption and scenic environment use. This is an important solution for
sustainable operation and management of green campus.
Acknowledgements This project was supported by POWERCHINA HUADONG Science and
Technology Project (KY2016-02-04), National Natural Science Foundation of China (41701541),
and Shanghai Pujiang Program (17PJ1400900).
References
Agulló-Barceló, M., Polo-López, M. I., Lucena, F., Jofre, J., & Fernández-Ibáñez, P. (2013). Solar
advanced oxidation processes as disinfection tertiary treatments for real wastewater: Implications
for water reclamation. Applied Catalysis, B: Environmental, 136–137, 341–350.
Aieta, E. M., & Berg, J. D. (1986). A review of chlorine dioxide in drinking water treatment.
Journal-American Water Works Association, 78, 62–72.
Al-Shamma’a, A. I., Pandithas, I., & Lucas, J. (2001). Low-pressure microwave plasma ultraviolet
lamp for water purification and ozone applications. Journal of Physics D, 34, 2775.
Bergmann, H., Iourtchouk, T., Schöps, K., & Bouzek, K. (2002). New UV irradiation and direct electrolysis—promising methods for water disinfection. Chemical Engineering Journal, 85, 111–117.
Cecili, A., & Claudio, L. (2003). Wastewater disinfection with PAA and UV combined treat ment:a
pilot plant study. Water Research, 37, 2365–2371.