Mahsa Ghadamzadeh, R. Jalilzadeh yengejeh, Narges Javadzadeh, Azita Koushafar, S. Attarroshan
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引用次数: 0
摘要
背景:本研究调查了四膜微藻去除水产养殖中心废水中硝酸盐的能力。具体而言,本研究旨在调查四膜微藻在实验室条件下的氮减排量。因此,对藻类密度、叶绿素 a、特定生长率、硝酸盐和氨水平进行了调查。研究方法在实验室条件下,以 2000 mL(包括 1900 mL 蒸馏水和 100 mL 原液)的恒定密度种植四膜藻,以研究 15 天的精制效果。在试验步骤中,使用标准方法和紫外分光光度计测定上述因子的浓度。结果显示结果表明,在含有废水的试验工厂中,藻类密度、叶绿素浓度和特定生长率的表现优于其他因素。此外,使用所研究的藻类可使水产养殖中心废水中的氨氮减少 50%,硝酸盐减少 80%。数据模型显示,上述微藻可有效减少水产养殖中心废水中的氮含量达 75%。结论研究结果表明,微藻能减少水产养殖中心废水中的有机物质并将其排放到环境中。
Investigating the Growth Rate of Tetraselmis Algae and its Effect on Nitrogen Removal From Aquaculture Wastewater
Background: This research investigated the ability of Tetraselmis microalgae to remove nitrates from aquaculture centers’ wastewater. Specifically, this study aimed to investigate the amount of nitrogen reduction by Tetraselmis microalgae under laboratory conditions. Therefore, algal density, chlorophyll a, specific growth rate, nitrate, and ammonia levels were investigated. Methods: Tetraselmis microalgae was planted under laboratory conditions with constant density of 2000 mL including 1900 mL of distilled water and 100 mL of stock to investigate the refining effects for 15 days. Along to the test steps, the concentration of the mentioned factors was determined using standard methods and ultraviolet spectrophotometer. Results: The results showed that algal density, chlorophyll concentration, and specific growth rate performed better than others in the pilot plants containing wastewater. Also, use of the studied algae caused a 50% reduction in ammonia and 80% in nitrate from aquaculture center wastewater. The data modeling showed that the above-mentioned microalgae were effective in reduction of nitrogen from aquaculture center wastewater as much as 75%. Conclusion: The results showed that the species can reduce organic substances in the wastewater of aquaculture center and their discharge into the environment.