生活垃圾堆放场和填埋场矿化垃圾中磷的形态及其磷素活化

PHOSPHORUS FRACTIONS AND ACTIVATION IN AGED REFUSE FROM MUNICIPAL SOLID WASTE DUMPLING SITE AND LANDFILL

采用修正的Hedley磷素分级方法研究了生活垃圾堆放场和填埋场矿化垃圾中磷的形态分布,同时研究了鸡粪(含磷较高)和稻草(含磷较低)两种典型有机物料对矿化垃圾中不同形态磷的活化效应.结果表明,生活垃圾堆放场和填埋场矿化垃圾中,不同形态磷的含量表现出相似的趋势,仅树脂交换态磷和浓盐酸磷的含量存在明显差异;以氢氧化钠磷和磷灰石型磷构成的中度活性磷均为生活垃圾堆放场和填埋场矿化垃圾中磷的主要赋存形态,分别占各自总磷的78%和74.9%,表明矿化垃圾中磷素具有高效利用的潜能.鸡粪和稻草均能显著活化矿化垃圾中的磷,而且鸡粪的磷活化效果优于稻草;氢氧化钠磷、磷灰石型磷和浓盐酸磷是矿化垃圾中活化磷的主要来源.

A modified Hedley phosphorus（P） fractionation method was used to investigate the quantities and proportions of P fractions in aged refuse from municipal solid waste（MSW） dumpling site and landfill.The activation effects of chicken manure（high P content） and straw（low P content） on different P forms were also studied.The results showed that the P fractions in aged refuse from MSW dumpling site and landfill had a similar distribution,and only the anion exchange resin extracted P and the concentrated HCl-extractable P were notably different.The moderately available P（sum of hydroxide and dilute acid fractions） was the predominant forms and accounted for 78% and 74.9% of total P in aged refuse from MSW dumpling site and landfill,respectively,indicating that the phosphorus in aged refuse had the potential of high-efficacy utilization.The chicken manure and straw had significant activation effects on the phosphorus in aged refuse,and the former was superior to the latter in P-activation.It was found that NaOH-P,phoosphoriee P and concentrated HCl-extractable P were main sources of activitable P in aged refuse.