Evaluation of a carbon felt amended anaerobic baffled reactor for rural blackwater treatment
This study assessed the ability of a carbon-felt amended anaerobic baffled reactor to treat blackwater(separately collected toilet wastewater)at ambient temperature,gradually shortening the hydraulic retention time(HRT)to explore its maximum performance.The results showed that under conditions of HRT at 1.45d and an organic loading rate of 2.94kg COD/m3/d,the maximum methane yield achieved was(417±59)NL CH/(m3·d),with a methanization rate of(40.5±5.02)％and a total COD removal rate of(79.08±7.24)％.The addition of carbon felt specifically enriched the genus Methanospirillum,realizing high efficiency through the domination of hydrogenotrophic methanogenesis pathway.This reactor demonstrated excellent organic matter treatment efficiency,high methane yield,and high-quality biogas at room temperature.The effluent contained a larger proportion of nutrients that plants can directly absorb,with the advantage of being simple-to-operate and easy-to-maintain,showing good potential for practical application in rural areas.
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维普
