Characterization of a hybrid powdered activated carbon-dynamic membrane bioreactor (PAC-DMBR) process with high flux by gravity flow: Operational performance and sludge properties
发布时间：2024-08-09
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- 所属单位：
- 环境与市政工程学院
- 发表刊物：
- Bioresource Technology
- 关键字：
- 中文关键字：PAC-DMBR；粉末活性炭；污水处理；污泥特性；过滤阻力，英文关键字：PAC-DMBR hybrid process; Powdered activated carbon
- 摘要：
- Three PAC-DMBRs were developed for wastewater treatment under different PAC dosages with biomass concentrations averaged at 2.5, 3.5 and 5.0 g/L. The DMBRs could be continuously operated at 40–100 L/m2 h, while higher fluxes were obtained within the PAC-DMBRs with hydraulic retention times varying in 4–10 h. A dose of 1 g/L PAC brought about obvious improvement in the sludge particle size distribution, settling, flocculating and dewatering properties due to the formation of biological PAC, and the sludge properties were further improved at a higher PAC dose (3 g/L). The addition of PAC notably shortened the DM formation time after air backwashing and enhanced pollutant removal. Moreover, under a long solid retention time (approximately 150 d), the concentrations of both soluble and bound extracellular polymeric substances (EPS) decreased substantially because of the adsorption and biodegradation effects of the biological PAC. No obvious impact on biomass activity was observed with PAC addition.
- 备注：
- 胡以松
- 合写作者：
- 孙琪媛,HuuHaoNgo,于真真,唐嘉陵
- 第一作者：
- 张琼华,王晓昌,胡以松
- 论文类型：
- 期刊论文
- 卷号：
- 卷：223
- 期号：
- 期：
- 页面范围：
- 页：65-73
- 是否译文：
- 否
- 发表时间：
- 2017-01-01