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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Production of Biomass (Algae-Bacteria) by Using a Mixture of Settled Swine and Sewage as Substrate
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Production of Biomass (Algae-Bacteria) by Using a Mixture of Settled Swine and Sewage as Substrate

机译：以沉降猪和污水的混合物为底物生产生物质（藻类细菌）

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摘要

This paper presents the use of a mixture of settled swine and sewage as substrate for biomass production, mainly constituted by microalgae Chlorella vulgaris and aerobic bacteria, growing outdoor at different dilution rates in a continuous mode. The experiments were carried out in 16-litre volume laboratory ponds operating at hydraulic retention times (HRT) in a range of 4-14 days equivalent to dilution rates (D) in a range of 0.250-0.071 d~(-1). Total chemical oxygen demand (TCOD), soluble chemical oxygen demand (SCOD), total biochemical oxygen demand (TBOD_5), total suspended solids (TSS), volatile suspended solids (VSS), total Chlorophyll (ΣC), total Kjeldahl nitrogen (TKN), ammonia nitrogen, total phosphorous, orthophosphate and pH were monitored. An empirical relationship between the dilution rate (D) and the removal efficiencies of TCOD, SCOD, TBOD_5, TKN and total phosphorous was found. The occurrence of an inhibition process for TCOD, TBOD_5, TKN and total phosphorous removals was observed. The Andrews kinetic model was successfully applied to these experimental data, while the Monod model was more suitable for studying the variation of the SCOD removal rate with the effluent SCOD concentration. The maximum microalgal biomass productivity was found to be in the range of 93-98 mg VSS_A/L d (37.2-39.2 g/m~2d) at dilution rates in the range of 0.167-0.250 d~(-1), where VSS_A is the concentration of microalgae expressed in VSS. In the case of the bacteria, the productivity increased linearly with the dilution rate being maximum at a D value of 0.25 d~(-1). It was concluded that the mixture of pre-treated swine and sewage used as substrate, contributed to the obtention of a high biomass (microalgae-bacteria) production, providing a simple technology feasible to be applied in developing countries.
机译：本文介绍了使用定居猪和污水的混合物作为生物质生产的基质的方法，该生物质主要由微藻小球藻和需氧细菌组成，并以不同的稀释率在室外连续生长。实验是在16升容量的实验室池塘中进行的，该池塘在4-14天的水力停留时间（HRT）下工作，相当于稀释率（D）在0.250-0.071 d〜（-1）范围内。总化学需氧量（TCOD），可溶性化学需氧量（SCOD），总生化需氧量（TBOD_5），总悬浮固体（TSS），挥发性悬浮固体（VSS），总叶绿素（ΣC），凯氏氮（TKN）监测氨氮，总磷，正磷酸盐和pH。发现了稀释率（D）与TCOD，SCOD，TBOD_5，TKN和总磷的去除效率之间的经验关系。观察到了对TCOD，TBOD_5，TKN和总磷去除的抑制过程的发生。 Andrews动力学模型已成功应用于这些实验数据，而Monod模型更适合于研究SCOD去除率随废水SCOD浓度的变化。发现当稀释率在0.167-0.250 d〜（-1）范围内时，最大微藻生物量生产率在93-98 mg VSS_A / L d（37.2-39.2 g / m〜2d）范围内，其中VSS_A是以VSS表示的微藻浓度。在细菌的情况下，生产率在D值为0.25 d〜（-1）时线性增加，稀释率最大。结论是，将预处理的猪和污水作为底物的混合物有助于获得高生物量（微藻细菌）生产，为在发展中国家中应用简单技术提供了可能。

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