摘要
采用室内模拟方法,以自来水为对照,研究了再生水、城市综合污水及含油污水短期浇灌对长期污灌区土壤的土壤酶及土壤微生物量碳(SMBC)的影响,探讨了再生水浇灌是否会在一定程度上有利于受污染土壤的肥力和质量的恢复。结果表明,再生水浇灌和自来水浇灌类似,可在一定程度上提高受污染土壤的土壤酶(包括过氧化氢酶、多酚氧化酶和脲酶)活性及SMBC,促进土壤中石油烃污染物的降解,在一定程度上有利于受污染土壤的肥力和质量的恢复;污水浇灌不利于受污染土壤中石油烃污染物的降解,含油污水浇灌使土壤中石油烃污染物有一定程度的积累;污水浇灌和含油污水浇灌对受污染土壤的土壤酶及SMBC没有表现出明显的不利影响,反而有一定程度的刺激作用。
Effects of different irrigation water （reclaimed water, wastewater, petroleum-containing wastewater and tap water） used for 90 days on soil enzyme and soil microbial biomass carbon （SMBC） from a long-term wastewater irrigation kaleyard were investigated by indoor simulation method. The purpose was to understand whether irrigation with reclaimed water could benefit the remediation of contaminated agricultural soil＇s fertility and quality. The results showed no significant difference between the reclaimed water and tap water irrigated on the contaminated kaleyard soil. Reclaimed water could lead to the increase of soil enzyme activities （catalase, polyphenol oxidase and urease） and SMBC. and it could accelerate the degradation of petroleum hydrocarbon in the contaminated kaleyard soil. It indicated that irrigation with reclaimed water could benefit the remediation of contaminated soil＇s fertility and quality. Wastewater had no significant effect on activities of catalase and polyphenol oxidase, but could increase the urease activity. It also led to a increase of SMBC. Wastewater could not accelerate the degradation of petroleum hydrocarbon in the contaminated soil. Petroleum-containing wastewater Could also lead to the increase of soil enzyme activities （catalase, polyphenol oxidase and urease） and SMBC, but it resulted an accumulation of petroleum hydrocarbon content in the contaminated soil.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2008年第6期2227-2232,共6页
Journal of Agro-Environment Science
关键词
再生水
浇灌
石油烃
土壤酶活性
土壤微生物量碳
reclaimed water
irrigation
petroleum hydrocarbon
soil enzyme activity
SMBC
