Advanced wastewater treatment using filamentous algae in raceway ponds with underwater light

IF 2.2 4区工程技术 Q3 ENERGY & FUELS Energy Sources Part A-recovery Utilization and Environmental Effects Pub Date : 2018-11-19 DOI:10.1080/15567036.2018.1549142

K. Min, Jongkeun Lee, K. Park

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引用次数: 9

Abstract

ABSTRACT The current study evaluated nutrient removal efficiency, algae productivity, and economic feasibility related to cultivation of the filamentous algae, Hydrodictyon reticulatum, in a pilot plant-scale raceway pond with underwater light. Following the installation of an underwater light device, removal efficiencies of T-N and T-P increased by 11.0% and 12.3%, respectively. The productivity of algae also increased by 133.8% to 5.81 g/m2∙d. Installation of the underwater light device increased the wastewater treatment capacity by over 3 times in the same area and enabled the removal of nutrients by over 3.5 times and removal of carbon dioxide by an additional 39 tons/yr. Estimates indicated that the cost of wastewater treatment and nutrient removal was reduced by more than 67%, while the production cost of H. reticulatum was reduced by 18% or more. Therefore, underwater light may solve issues related to the need for large sites in existing raceway ponds and enhance the economic efficiency by improving nutrient removal efficiency and productivity.

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利用丝状藻在沟道池中进行水下光深度处理废水

摘要/ ABSTRACT摘要:本研究评估了在一个具有水下光的中试工厂规模的环形池塘中培养丝状藻类(Hydrodictyon reticulatum)的营养去除效率、藻类生产力和经济可行性。安装水下光装置后，T-N和T-P的去除效率分别提高了11.0%和12.3%。藻类的生产力也提高了133.8%，达到5.81 g/m2∙d。安装水下光装置后，同一区域的废水处理能力提高了3倍以上，营养物的去除率提高了3.5倍以上，二氧化碳的去除率提高了39吨/年。估计表明，废水处理和营养物去除的成本降低了67%以上，而网纹草的生产成本降低了18%或更多。因此，水下光可以解决现有回旋池需要大场地的问题，并通过提高养分去除效率和生产力来提高经济效益。

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来源期刊

Energy Sources Part A-recovery Utilization and Environmental Effects 工程技术-工程：化工

CiteScore

4.40

自引率

6.90%

发文量

488

审稿时长

1.7 months

期刊介绍： Energy Sources Part A: Recovery, Utilization, and Environmental Effects aims to investigate resolutions for the continuing increase in worldwide demand for energy, the diminishing accessibility of natural energy resources, and the growing impact of energy use on the environment. You are invited to submit manuscripts that explore the technological, scientific and environmental aspects of: Coal energy sources Geothermal energy sources Natural gas Nuclear energy sources Oil shale energy sources Organic waste from energy use Petroleum Solar energy sources Tar utilization Sand utilization Wind energy.