Abstract：
In this study, we examined the modulation of algae removal and algal organic matter (AOM) chemistry by potassium permanganate and poly-aluminum chloride (KMnO4-PAC) in simulated karst water. Specifically, we verified the compositional changes of AOM sourcing from Chlorella sp. and Pseudanabaena sp. in response to the presence of divalent ions (Ca2+ and Mg2+). Aromatic protein and soluble microbial products were identified as the primary AOM components. Divalent ions accelerated dissolved organic carbon (DOC) and UV254 removal, particularly with Pseudanabaena sp. greater than Chlorella sp. (P < 0.05). Surface morphology analysis manifested that the removal of filamentous Pseudanabaena sp. was more feasible in comparison to globular Chlorella sp.. Our results highlight the significance of divalent ions in governing chemical behaviors and subsequent removal of both algae and AOM. This study upscales the understanding of the interactions among divalent ions, algae and AOM during preoxidation and coagulation process in algae-laden karst water.
摘要：
在这项研究中,我们研究了高锰酸钾和聚氯化铝（KMnO4-PAC）在模拟岩溶水中对藻类去除和藻类有机物（AOM）化学的调节。具体来说,我们验证了小球藻来源AOM的组成变化。和伪anabaenasp.响应于二价离子(Ca2+和Mg2+)的存在。芳香族蛋白质和可溶性微生物产物被鉴定为主要的AOM组分。二价离子加速溶解有机碳(DOC)和UV254的去除,特别是与Pseudanabaenasp。大于小球藻sp。(P<0.05)。表面形态分析表明，去除了丝状假单胞菌。与球状小球藻相比更可行。.我们的结果强调了二价离子在控制化学行为以及随后去除藻类和AOM方面的重要性。这项研究提高了对二价离子之间相互作用的理解，含藻岩溶水中预氧化和混凝过程中的藻类和AOM。
