التفاصيل البيبلوغرافية
| العنوان: |
Improvement of an integrated system of membrane bioreactor and worm reactor by phosphorus removal using additional post-chemical treatment. |
| المؤلفون: |
Jia Liu, Wei Zuo, Yu Tian, Jun Zhang, Hui Li, Lipin Li |
| المصدر: |
Water Science & Technology; 2016, Vol. 74 Issue 9, p2202-2210, 9p |
| مصطلحات موضوعية: |
CHEMICAL treatment of industrial wastes, WASTEWATER treatment, MEMBRANE reactors, PHOSPHORUS in water, WORMS |
| مستخلص: |
A membrane bioreactor (MBR) coupled with a worm reactor (SSBWR) was designed as SSBWR-MBR for sewage treatment and excess sludge reduction. However, total phosphorus (TP) release caused by worm predation in the SSBWR could increase the effluent TP concentration in the SSBWR-MBR. To decrease the amount of TP excreted, chemical treatment reactor was connected after the SSBWRMBR to remove the excess phosphorus (P). The effects of chemical treatment at different time intervals on the performance of the SSBWR-MBR were assessed. The results showed that a maximum TP removal efficiency of 21.5±1.0% was achieved in the SSBWR-MBR after chemical treatment. More importantly, a higher sulfate concentration induced by chemical treatment could promote TP release in the SSBWR, which provided further TP removal from the SSBWR-MBR. Additionally, chemical oxygen demand (COD) removal efficiency of the SSBWR-MBR was increased by 1.3% after effective chemical treatment. In the SSBWR-MBR, the chemical treatment had little effects on NH3-N removal and sludge production. Eventually, chemical treatment also alleviated the membrane fouling in the SSBWR-MBR. In this work, the improvement on TP, COD removal and membrane fouling alleviation was achieved in the SSBWR-MBR using additional chemical treatment. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
