渗滤液回灌比例对好氧生物反应器填埋场稳定化进程的影响

发布时间：2018-07-24 15:44

【摘要】：为研究回灌比例对好氧生物反应器填埋场稳定化进程的影响,探讨了回灌比例为15%、20%、25%、30%和全回灌(体积分数)时,反应器所产渗滤液及填埋垃圾性质在不同回灌比例下变化的趋势,填埋周期为198 d。结果表明:回灌比例为25%的反应器所产渗滤液中的氨氮于135 d达到GB 16889-2008所规定的垃圾填埋场渗滤液氨氮排放浓度限值,较其他反应器提前3~49 d,整个填埋周期所产还原性有机物较其他回灌量低2.11%~20.16%;且有机垃圾降解速度最快,至填埋结束时,沉降率为75.13%,比其他反应器多0.87%~2.63%,总有机质和纤维素含量分别为48.47%和7.39%,较其他回灌比例分别低0.61%~5.52%和0.2%~0.64%,表明25%的回灌比例有利于快填埋场的稳定化进程。
[Abstract]:In order to study the effect of recharge ratio on stabilization process of aerobic bioreactor landfill site, the tendency of the leachate produced by the reactor and the properties of landfill under different recharge ratios was discussed when the recharge ratio was 15% and 25% and 30% respectively, and the total recharge (volume fraction) was 30%. The landfill period is 198 days. The results showed that the ammonia nitrogen in leachate produced by the reactor with 25% recharge ratio reached the limit of ammonia nitrogen emission from landfill leachate prescribed by GB 16889-2008 in 135 days. Compared with other reactors, the amount of reducing organic matter produced in the whole landfill cycle was 2.11% and 20.16 days earlier than that in other reactors, and the degradation rate of organic waste was the fastest until the end of landfill. The settling rate was 75.13, 0.87% and 2.63 more than other reactors. The total organic matter and cellulose content were 48.47% and 7.39%, respectively, which were 0.61% and 0.22% lower than those of other recharge, indicating that 25% recharge ratio was beneficial to the stabilization process of the fast landfill site.
【作者单位】：西南交通大学生命科学与工程学院;中铁西北科学研究院有限公司西南分院;西南交通大学地球科学与环境工程学院;
【基金】：四川省科技支撑计划项目(2015NZ0097) 甘肃省科技支撑计划项目(1504FKA058)
【分类号】：X705

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