Effects of low-concentration Cr(VI) on the performance and the membrane fouling of a submerged membrane bioreactor in municipal wastewater treatment

Taylor & Francis
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Journal Article
Biofouling, 2014, 30 (1), pp. 105 - 114
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The effects of low-concentration Cr(VI) (0.4 mg l-1) on the performance of a submerged membrane bioreactor (SMBR) in the treatment of municipal wastewater, as well as membrane fouling were investigated. Compared with the SMBR for control municipal wastewater, the SMBR for Cr(VI)-containing municipal wastewater had a higher concentration of soluble microbial products (SMP) with lower molecular weights, and smaller sludge particle sizes. Furthermore, low-concentration Cr(VI) induced membrane fouling, especially irreversible membrane pore blocking, which markedly shortened the service life of the membrane.
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