Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran.
Department of Marine Chemistry, Faculty of Marine Sciences and Technology, North Tehran Branch, Islamic Azad University, Tehran, Iran.
Water Environ Res. 2021 Oct;93(10):2122-2134. doi: 10.1002/wer.1586. Epub 2021 Jun 14.
Fast and proper treatment of dairy wastewater is necessary before discharging it to the environment. In this study, healthy Azolla filiculoides was used to remove pollutants, including phosphorus (P), sodium (Na), chemical oxygen demand (COD), biological oxygen demand (BOD), and total dissolved solids (TDS) of dairy effluent in batch, continuous system, as well as continuous with the slow stirring system. These systems were handmade. The maximum removal efficiency was related to the P, which obtained 66.25% after 12 h in the batch bioreactor system. The highest removal of 13.69% after 21 h was obtained for Na using continuous with a slow stirring method. The highest removal related to the COD and BOD was 33.53% and 29.93% after 18 h, respectively, in continuous with the slow stirring system. TDS removal was achieved 31.44% after 24 h using the batch system. The results of these three systems were compared with each other using a one-way analysis of variance (ANOVA). There was no significant difference between them. Azolla filiculoides is an abundant plant in northern nature that a biosystem was used for optimum usage. It can be used as an efficient, inexpensive, and affordable bioadsorbent for dairy wastewater treatment. PRACTITIONER POINTS: Live Azolla filiculoides was used to remove pollutants. P, Na, BOD, COD, and TDS were removed from dairy wastewater. Batch, continuous, and continuous with the slow stirring systems were used. Live Azolla was an efficient, inexpensive, and affordable bio-adsorbent for dairy wastewater treatment.
在向环境排放之前，必须对奶牛废水进行快速和适当的处理。在这项研究中，使用健康的满江红来去除污染物，包括磷（P）、钠（Na）、化学需氧量（COD）、生物需氧量（BOD）和奶牛废水中的总溶解固体（TDS），采用间歇式、连续式和连续式缓慢搅拌系统。这些系统都是手工制作的。最大去除效率与 P 有关，在间歇式生物反应器系统中，12 小时后 P 的去除效率达到 66.25%。采用连续缓慢搅拌法，Na 的去除率最高，21 小时后达到 13.69%。连续缓慢搅拌系统中，COD 和 BOD 的去除率最高，分别为 18 小时后 33.53%和 29.93%。采用间歇式系统，24 小时后 TDS 的去除率达到 31.44%。使用单向方差分析（ANOVA）比较这三种系统的结果，它们之间没有显著差异。满江红是北方自然中丰富的植物，生物系统被用于最佳利用。它可以作为一种高效、廉价和负担得起的生物吸附剂，用于处理奶牛废水。
注意：在翻译时，保留了英文中的原文序号和缩写，如“P”“Na”“COD”“BOD”“TDS”等。
