School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, S.P.S, Pulau Pinang, Malaysia; Solid Waste Management Cluster, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, S.P.S, Pulau Pinang, Malaysia.
School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, S.P.S, Pulau Pinang, Malaysia; Solid Waste Management Cluster, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, S.P.S, Pulau Pinang, Malaysia.
Waste Manag. 2018 Apr;74:362-372. doi: 10.1016/j.wasman.2018.01.016. Epub 2018 Jan 19.
This study investigated the behavior and mechanisms of cross-linked Durio zibethinus seed starch (CDSS) flocculants for landfill leachate treatment. A physical-chemical treatment method of coagulation-flocculation process and starch modification were implemented in treating stabilized leachate from Matang Landfill, Perak, Malaysia. In practical, the removal performance of color, COD, suspended solid and turbidity for CDSS flocculants were evaluated by combining with primary coagulant of polyaluminium chloride (PAC). In this study, the application of crosslinking modification for Durio zibethinus seed waste starch flocculants showed good improvement. The impurities removal for colour, COD, suspended solid and turbidity were increased by the addition of CDSS flocculants. Furthermore, the average size of the floc was also increased from 60.24 µm to 89.5 µm. Despite, the addition of CDSS flocculants produced a reduction of PAC coagulant from 2700 mg/L to 2200 mg/L, with 500 mg/L reduction on the PAC dosage dependency. Therefore, these results affirmed the potentials of crosslinked modification for Durio zibethinus seed waste starch flocculants in landfill leachate treatment.
本研究考察了交联黄猄蚁种子淀粉（CDSS）絮凝剂用于垃圾渗滤液处理的行为和机制。采用混凝-絮凝工艺的物理化学处理方法和淀粉改性法处理马来西亚霹雳州马塘垃圾填埋场稳定化渗滤液。在实际应用中，通过与聚合氯化铝（PAC）作为初级混凝剂相结合，评估 CDSS 絮凝剂对颜色、COD、悬浮物和浊度的去除性能。在这项研究中，交联改性在黄猄蚁种子废淀粉絮凝剂的应用中表现出了良好的改进。通过添加 CDSS 絮凝剂，去除了颜色、COD、悬浮物和浊度等杂质。此外，絮体的平均粒径也从 60.24 µm 增加到 89.5 µm。尽管添加 CDSS 絮凝剂使 PAC 混凝剂的用量从 2700 mg/L 减少到 2200 mg/L，PAC 用量的依赖性降低了 500 mg/L。因此，这些结果证实了交联改性对黄猄蚁种子废淀粉絮凝剂在垃圾渗滤液处理中的应用潜力。
