Experimental study on the biological activated carbon-membrane bioreactor for the domestic wastewater treatment of low C/N ratio - Details

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Abstract：

In　order　to　ensure　that　the　MBR　not　only　obtains　high　quality　effluent　but　also　lessen　the　membrane　fouling　to　prolong　the　working　period　of　the　membrane　module,　the　powdered　activated　carbon　(PAC)　was　added　into　the　bioreactor　(the　concentration　of　PAC　was　1　500　mg/L).　And　the　MBR　has　run　continuously　for　120　days　with　constant　temperature　(30°C),　constant　membrane　flux　(7　L/(m2·h))　and　intermittent　pump　(the　outlet　pump　run　for　10　minutes　and　rests　for　3　minutes).　The　experimental　results　showe　that　the　biofilm　on　the　PAC　as　carrier　is　formed,　thus　the　biofilm　and　the　activated　sludge　in　membrane　bioreactor　produce　new　ecosystem　which　can　improve　the　wastewater　removal　efficiency.　In　addition　PAC　changes　the　properties　of　the　mixed　liquor　and　the　structure　of　cake　layer　on　the　surface　of　membrane　module,　and　the　filtration　resistance　is　reduced.　It　is　an　effective　way　to　lessen　membrane　fouling.

Keyword：

Bioreactors Temperature Wastewater treatment Ecosystems Fouling Activated carbon Removal Effluents Biofilms

Author Community：

[ 1 ] [Li, Jun]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Jiang, Ding-Guo]Huairou Water Authority of Beijing, Beijing 101400, China
[ 3 ] [Song, Wei-Hua]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Yang, Xiao-Dong]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China
[ 5 ] [Zhang, Gang]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China
[ 6 ] [Li, Tong]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China