Can high rate algal ponds be used as post-treatment of UASB reactors to remove micropollutants?
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hdl:2117/181242
Document typeArticle
Defense date2020-06
Rights accessRestricted access - publisher's policy
(embargoed until 2022-01-23)
Abstract
The present study evaluated the removal capacity of a UASB-HRAP treatment system, combining anaerobic and microalgae-based, aerobic treatment, for eleven organic micropollutants present in raw sewage, including pharmaceuticals, estrogens and xenoestrogens. The UASB reactor and the HRAP were operated at a hydraulic retention time (HRT) of 7 h and 8 days, respectively. Influent and effluent samples from the UASB and HRAP were collected periodically. All the target compounds were detected in raw sewage, with an occurrence ranging from 70 to 100%. Removal rates in the UASB reactor were generally incomplete, ranging from no removal (-25.12% for the hormone EE2-ethinylestradiol) to 84.91% (E2 - estradiol). However, the overall performance of the UASB + HRAP system was highly efficient for the majority of the compounds, with removal rates ranging from 64.8% (ibuprofen) to 95% (estrone). Gemfibrozil and bisphenol A were the only exceptions, with overall removal rates of 39% and 43%, respectively. Hormones were the compounds with the highest removal rates in the system.
CitationVassalle, L. [et al.]. Can high rate algal ponds be used as post-treatment of UASB reactors to remove micropollutants?. "Chemosphere", Juny 2020, vol. 248, p. 125969:1-125969:9.
ISSN0045-6535
Publisher versionhttps://www.sciencedirect.com/science/article/pii/S0045653520301612
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