Characteristics, source apportionment and health risk assessment of perfluoroalkyl acids in typical drinking water sources of eastern China

Abstract

Perfluoroalkyl acids (PFAAs) have been received considerable attention due to their potential risks on ecological safety and human health. This study detailed the characteristics, source apportionment and health risk assessment...

A review of modified and hybrid anaerobic baffled reactors for municipal wastewater treatment with a focus on emerging contaminants

“…Granules coupling anammox and n-DAMO microorganisms are implemented in the anoxic tank to remove ammonium and dissolved methane in anaerobic effluent, using electron acceptors recirculated from the oxic tank performing nitrification or nitritation. 62 In conclusion, previous studies show that ammonia and nitrogen removal is possible in a modified ABR. An ABR followed by aerobic and anoxic tanks or an MBR with internal recycling can also achieve simultaneous N and P removal of 76% and 84%, respectively.…”

“…This process is therefore an interesting approach to achieve concurrent nitrogen and dissolved methane removal from anaerobic effluents. 62 It appears from Table 2 that municipal wastewater containing typically between 300 and 2914 mg L −1 COD could be treated successfully in ABRs and modified ABRs at HRT ranging from 6 h to 96 hours at a temperature of at least 25 °C. At organic loading rates in the range of 0.15 to 2.43 kg COD m −3 d −1 , the COD removal is generally higher than 80%.…”