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| The startup of simultaneous anammox and denitrification process atdifferent operational phases of anammox |
| LI Dong1, YANG Qiao-yun1, ZENG Hui-ping1, ZHANG Jie1,2 |
1. Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China;
2. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China |
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Abstract In order to start up astable simultaneous anammox and heterotrophic denitrification process to treat domestic sewage, the experiment was carried out at different ammonia nitrogen removal of the load (ANR). During the operation period, the variation of ammonia nitrogen (NH4+-N)nitrite nitrogen (NO2--N) and nitrate nitrogen (NO3--N) and dynamics activities of functional microbes were investigated to elaboratemain factors for the SAD process. The results showed that the reactor could treat domestic wastewater containing 100~150mg/L COD when the ANR was during 0.27~0.40kg/(μ3·d) and it could treat domestic wastewater containing 100~200mg/L COD stably when the ANR was 0.85kg/(m3·d) The reactor could start up stable SAD process if the ratioof ananmmox bacteria dynamics activity (μNH4+-N)with heterotrophicbacteria (μCOD)and denitrificationbacteria (μNH3--N) was within reasonable limits.The anammox bacteria activity was increased ,meanwhile the heterotrophicbacteria and denitrificationbacteriaactivity were decreased when the hydraulic retention time (HRT) was reduced. According to the cycle experiments,the simultaneous anammox and partial denitrification process
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Received: 06 October 2016
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