电生化协同蚯蚓生物滤池工艺强化污水污泥稳定化及同步产电。
Bioelectrochemically-assisted vermibiofilter process enhancing stabilization of sewage sludge with synchronous electricity generation.
机构信息
College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan 063000, PR China.
College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan 063000, PR China.
出版信息
Bioresour Technol. 2019 Oct;289:121740. doi: 10.1016/j.biortech.2019.121740. Epub 2019 Jul 2.
Bioelectrochemically-assisted vermifilter (VBF) with sewage sludge as the anode fuel was constructed to accelerate composting of sewage sludge, which could increase the quality of the compost and harvest electric energy in comparison with vermicomposting and electrochemical only. Results revealed that the sludge stabilization with a higher soluble chemical oxygen demand (SCOD) and lower NH-H during 40 days of composting. At the composting, pH, C/N, electrical conductivity (EC) and germination index (GI) results demonstrated that the maturity degree of VBF was higher than that of other VBF. The VBF yielded a voltage of 1.024 V and maximum power density of 105.28 mW/m on 3th day. The bacteria in VBF were richer and higher in terms of diversity than those in other VBF, that was demonstrated that combination vermicomposting and electrochemistry could improve the sludge stabilization degree, accelerate sludge composting process and enhance composting maturity.
采用以污水污泥为阳极燃料的生物电化学辅助蚯蚓过滤器（VBF）来加速污水污泥的堆肥，与蚯蚓堆肥和电化学堆肥相比，这可以提高堆肥的质量并收获电能。结果表明，在 40 天的堆肥过程中，污泥的稳定性更高，可溶性化学需氧量（SCOD）和 NH-H 更低。在堆肥过程中，pH 值、C/N、电导率（EC）和发芽指数（GI）的结果表明，VBF 的成熟度高于其他 VBF。VBF 在第 3 天产生了 1.024 V 的电压和 105.28 mW/m 的最大功率密度。VBF 中的细菌比其他 VBF 更丰富，多样性更高，这表明组合蚯蚓堆肥和电化学可以提高污泥的稳定性，加速污泥堆肥过程并提高堆肥的成熟度。
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