Frequent microzooplankton contamination such as rotifers in Chlorella mass culture often causes devastating effects on biomass production. In this study, five surfactants were used to control contamination by a rotifer, Brachionus calyciflorus, in Chlorella pyrenoidosa XQ-20044 cultures. Laboratory results showed that the minimal effective concentrations of surfactants for complete control of B. calyciflorus were 7.5, 10, 10, 10, and 15 mg L⁻¹ for primary alcohol ethoxylate, sodium dodecylbenzene sulfonate, sodium alcohol ether sulfate, coconut diethanolamide, and sodium dodecyl sulfate, respectively. However, only 10 mg L⁻¹ sodium dodecylbenzene sulfonate and 7.5–10 mg L⁻¹ primary alcohol ethoxylate had no negative effects on algal growth. Moreover, in a 5 m² open raceway pond, 10 mg L⁻¹ sodium dodecylbenzene sulfonate ensured swift and total elimination of rotifers, while the final dry weight of the algae reached >0.74 g L⁻¹ whereas the cost of using sodium dodecylbenzene sulfonate was only $ 0.014. The results of this study indicated that sodium dodecylbenzene sulfonate approach is fast-acting, highly effective, and a low-cost treatment. Therefore, sodium dodecylbenzene sulfonate has great potential for biological contamination control in microalgae mass culture without a negative impact on algal growth.

小球藻大量培养中常见的微浮游动物污染，例如轮虫，通常对生物量产生破坏性影响。在这项研究中，5种表面活性剂是由一个轮虫，用来控制污染臂轮虫，在蛋白核小球藻XQ-20044培养物。实验室结果表明，完全控制花椰菜的表面活性剂的最低有效浓度为伯醇乙氧基化物，十二烷基苯磺酸钠，醇醚硫酸钠，椰子二乙醇酰胺和7.5、10、10、10和15 mg L ^-1。十二烷基硫酸钠。但是，只有10 mg L ^-1十二烷基苯磺酸钠和7.5–10 mg L^-1伯醇乙氧基化物对藻类的生长没有负面影响。此外，在一个5 m ^2的开放水道池塘中，10 mg L ^-1十二烷基苯磺酸钠确保迅速且完全消除轮虫，而藻类的最终干重达到> 0.74 g L ^-1，而使用十二烷基苯磺酸钠的成本仅售$ 0.014。这项研究的结果表明，十二烷基苯磺酸钠法是一种速效，高效且低成本的治疗方法。因此，十二烷基苯磺酸钠在微藻大规模培养中具有巨大的生物污染控制潜力，不会对藻类的生长造成负面影响。