ABSTRACT

When the inevitable generation of waste is considered as hazardous to health, damaging ecosystem to our environment, it is important to develop an innovative technologies to remediate pollutant sources for the safety and environmental protection. The development of adsorption technique for the reduction of extremely effective pollutants in this regard. Green mussel and zeolite mixing media were investigated for the reduction of the concentration of organic constituents (COD) and ammoniacal nitrogen from leachate. The leachate treatability was analyzed under various stages of treatment parameter, namely mixing ratio, shaking speed, contact time, and pH. Both adsorbent were sieve values in between 2.00–3.35 mm particle size. The optimum pH, shaking speed, contact time, and mixing ratio were determined. Leachate samples were collected from influent untreated detention pond at Simpang Renggam landfill site in Johor, Malaysia. The result of leachate characterization properties revealed that non-biodegradability leachate with higher concentrations of COD (1829 mg/L), ammoniacal nitrogen (406.68 mg/L) and biodegradability value (0.08) respectively. The optimal reduction condition of COD and ammoniacal nitrogen was obtained at 200 rpm shaken speed, 120 minute shaken time, optimum green mussel and zeolite mix ratio was 2.0:2.0, and pH 7. The isothermic study of adsorption shows that Langmuir is best suited for experimental results in terms of Freundlich model. The mixing media also provided promising results to treating leachate. This would be greatly applicable in conventionally minimizing zeolite use and thereby lowering the operating cost of leachate treatment.

Implications: The concentration of organic constituents (COD) and ammoniacal nitrogen in stabilized landfill leachate have significant strong influences of human health and environmental. The combination of mixing media green mussel and zeolite adsorbent COD and ammoniacal nitrogen reduction efficiency from leachate. This would be greatly applicable in future research era as well as conventionally minimizing high cost materials like zeolite use and thereby lowering the operating cost of leachate treatment.

摘要

当不可避免的废物产生被认为对健康有害，对我们的环境造成破坏生态系统时，开发一种创新技术来修复污染源以确保安全和环境保护是很重要的。吸附技术的发展对减少这方面的污染物极为有效。研究了青口贝和沸石混合介质降低渗滤液中有机成分 (COD) 和氨氮的浓度。在处理参数的不同阶段，即混合比、摇动速度、接触时间和pH下，分析了渗滤液的可处理性。两种吸附剂的筛分值都在 2.00–3.35 mm 粒径之间。确定了最适pH、振荡速度、接触时间和混合比。渗滤液样本是从马来西亚柔佛州新邦令甘垃圾填埋场未经处理的流入水池中收集的。渗滤液表征结果表明，非生物降解渗滤液的COD（1829 mg/L）、氨氮（406.68 mg/L）和生物降解值（0.08）分别较高。COD和氨氮的最佳还原条件为摇床转速200 rpm，摇床时间120 min，最佳青贻贝和沸石混合比为2.0:2.0，pH 7。吸附等温研究表明Langmuir最适合Freundlich模型的实验结果。混合介质还为处理渗滤液提供了有希望的结果。

启示：稳定的垃圾填埋场渗滤液中有机成分 (COD) 和氨氮的浓度对人类健康和环境具有显着的强烈影响。混合介质青贻贝和沸石吸附剂 COD 的组合以及渗滤液中氨氮的降低效率。这将极大地适用于未来的研究时代，以及传统上最大限度地减少高成本材料（如沸石）的使用，从而降低渗滤液处理的运营成本。