Advanced Treatment of Campus Sewage
by MV/UV/O 3 for Water Reclamation
Shengying Gong, Yanting Wang and Jie Fu
Abstract The microwave/electrodeless ultraviolet/ozone (MV/UV/O 3 ) system was
designed to deeply treat the outflow from the membrane bioreactor (MBR) process
to meet the requirements for campus water reclamation. The effects of microwave
power and UV intensity were studied by using factor experiments to find the relatively optimum technical parameters for disinfection, decolorization and deodorization. As the power of microwave raised from 300 to 450 W, the efficiencies of
disinfection, decolorization, and deodorization were significantly increased; however, continuously increasing the microwave power to 600 W, the increased trend of
treatment efficiency would be largely retarded. Similarly, the treatment efficiency of
MV/UV/O 3 system fiercely increased with increasing the UV light intensity from
0.52 to 1.04 mW/cm
2 , and then slowly climbed when further increasing the UV light
intensity to 1.56 mW/cm
2 . Therefore, 300 W of microwave power and 1.04 mW/cm
2
of UV light intensity (2 lamps) are the optimal parameters. Overall, MV/UV/O 3 is
an effective process to guarantee the effluent quality to meet the requirements of
reclaimed water for miscellaneous use in campus.
Keywords Campus water reclamation · Microwave · Electrodeless ultraviolet ·
Disinfection · Ozone · Decolonization
1 Introduction
Water is of vital importance to life, it covers about 70% of the terrestrial crust,
while only 2.5% of total water, which is considered as fresh water, is available
for life forms (Gleick 1993). With the rapid development of both our society and
the constant changes of the natural environment, the water source has been dwindled
sharply and water quality is continuously degrading (Fu et al. 2017; Worrall and Burt
2009). Water shortage has become a prominent problem that restricts the sustainable
development of human society and the improvement of the ecological environment.
S. Gong · Y. Wang · J. Fu (B)
Department of Environmental Science & Engineering, Fudan University, Shanghai 200438, China
e-mail: jiefu@fudan.edu.cn
© Springer Nature Singapore Pte Ltd. 2020
A. Z. Yaser (ed.), Green Engineering for Campus Sustainability,
https://doi.org/10.1007/978-981-13-7260-5_16
245
by MV/UV/O 3 for Water Reclamation
Shengying Gong, Yanting Wang and Jie Fu
Abstract The microwave/electrodeless ultraviolet/ozone (MV/UV/O 3 ) system was
designed to deeply treat the outflow from the membrane bioreactor (MBR) process
to meet the requirements for campus water reclamation. The effects of microwave
power and UV intensity were studied by using factor experiments to find the relatively optimum technical parameters for disinfection, decolorization and deodorization. As the power of microwave raised from 300 to 450 W, the efficiencies of
disinfection, decolorization, and deodorization were significantly increased; however, continuously increasing the microwave power to 600 W, the increased trend of
treatment efficiency would be largely retarded. Similarly, the treatment efficiency of
MV/UV/O 3 system fiercely increased with increasing the UV light intensity from
0.52 to 1.04 mW/cm
2 , and then slowly climbed when further increasing the UV light
intensity to 1.56 mW/cm
2 . Therefore, 300 W of microwave power and 1.04 mW/cm
2
of UV light intensity (2 lamps) are the optimal parameters. Overall, MV/UV/O 3 is
an effective process to guarantee the effluent quality to meet the requirements of
reclaimed water for miscellaneous use in campus.
Keywords Campus water reclamation · Microwave · Electrodeless ultraviolet ·
Disinfection · Ozone · Decolonization
1 Introduction
Water is of vital importance to life, it covers about 70% of the terrestrial crust,
while only 2.5% of total water, which is considered as fresh water, is available
for life forms (Gleick 1993). With the rapid development of both our society and
the constant changes of the natural environment, the water source has been dwindled
sharply and water quality is continuously degrading (Fu et al. 2017; Worrall and Burt
2009). Water shortage has become a prominent problem that restricts the sustainable
development of human society and the improvement of the ecological environment.
S. Gong · Y. Wang · J. Fu (B)
Department of Environmental Science & Engineering, Fudan University, Shanghai 200438, China
e-mail: jiefu@fudan.edu.cn
© Springer Nature Singapore Pte Ltd. 2020
A. Z. Yaser (ed.), Green Engineering for Campus Sustainability,
https://doi.org/10.1007/978-981-13-7260-5_16
245