摘要
结合有机废弃物资源化利用的特点,进行了污泥与绿化植物废弃物堆肥实验,以探讨其中多环芳烃的降解状况,为其更好的资源化利用提供坚实的证据。研究表明,污泥与绿化植物废弃物物堆肥腐熟时,16种优控多环芳烃的总量由原来的6.225 mg/kg降到了3.202 mg/kg,降解率达到了48.57%,并且堆肥后满足了欧洲联盟规定的多环芳烃农用限值6 mg/kg。就单个多环芳烃化合物而言,环数越少降解效果越好,分析其原因可能与PAHs所含苯环多少以及其分子量大小有关。
In the light of utilization of organic waste resource,a composting process of mixture of sewage sludge and greenery waste was carried out to study the degradation of polycyclic aromatic hydrocarbons（PAHs）,which would provide clear evidence for the practice.Results indicated that total content of 16 priority PAHs in the maturation phase decreased to 3.202 mg/kg from the original 6.225 mg/kg,with degradation rate about 48.57%,and final PAHs content satisfied the accepted European Union cut-off limits for sludge to be considered safe for agricultural application set at 6 mg/kg.As far as an individual PAHs was concerned,PAHs containing fewer aromatic rings were easier to be degraded,which might be because the tendency of bioavailability of various PAH compounds during composting is strongly related to number of aromatic rings,molecular weight and structure.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2011年第1期114-116,175,共4页
Environmental Science & Technology
基金
上海市建设委员会绿化管理局专项资助项目(ZXD50205)
上海市建设科技委项目资助(重科2008-006)
关键词
污泥
绿化植物废弃物
多环芳烃
堆肥
sewage sludge
greenery waste
polycyclic aromatic hydrocarbons（PAHs）
composting
