CAJ | 학술논문

老龄化垃圾渗滤液具有较高的碱度、离子浓度及高浓度的氨氮、总磷和 COD.采用静态吸附实验研究煤矸石、粉煤灰、磷石膏、高岭土四种基质对垃圾渗滤液中不同污染物的去除效果.结果表明:四种基质的加入均能缓冲渗滤液中的高碱度,其中磷石膏表现出较好的中和效果;粉煤灰、高岭土对溶液的 EC 具有明显的降低效果,同时对氨氮、总磷、COD 表现出较好的去除效果,优于煤矸石和磷石膏.渗滤液中重金属种类繁多,低使用量的基质对重金属表现出较好的去除效果,随着使用量的增加,渗滤液中金属离子浓度逐渐升高或趋于平衡.
노령화랄급삼려액구유교고적감도、리자농도급고농도적안담、총린화 COD.채용정태흡부실험연구매안석、분매회、린석고、고령토사충기질대랄급삼려액중불동오염물적거제효과.결과표명:사충기질적가입균능완충삼려액중적고감도,기중린석고표현출교호적중화효과;분매회、고령토대용액적 EC 구유명현적강저효과,동시대안담、총린、COD 표현출교호적거제효과,우우매안석화린석고.삼려액중중금속충류번다,저사용량적기질대중금속표현출교호적거제효과,수착사용량적증가,삼려액중금속리자농도축점승고혹추우평형.
Aging landfill leachate has high alkalinity, ion concentration and high concentration of ammonia nitrogen, total phosphorus and COD. We take the advantage of coal gangue, coal ash, ardealite and kaolin, to study the effect of different substrates to decontaminate the contaminations in leachate by static adsorption .The results shown that adding the four kinds of substrate can all buffer the alkalinity of the leachate. Among them the ardealite shown the stronger ability to neutralization,. The adding of coal ash and kaolin not only can decrease the concentration of ions significantly, but also the concentration of ammonia nitrogen, total phosphorus and COD, which is better than gangue and ardealite. There are various kinds of heavy metals in the aging leachate and low usage substrates shows a good removal efficiency to heavy metal. But the concentration of heavy metals in the leachate increased gradually and then reached equilibrium when adding the quantity of substrate.