摘要
稳定、多样的河湖水系生态系统恢复和维持难度大。针对北京典型再生水补水型河湖水体富营养化现象,选用火山岩、焦炭、沸石、陶粒、人工草等填料考察其对再生水补水型水体净化效果和物种的形成作用。结果表明:填充陶粒的反应器再生水出水各指标变化最为显著,其氮、磷等营养盐得到了较好地去除。火山岩、焦炭、沸石、陶粒和人工草5种填料附着细菌种属差异较小;附着浮游植物大多以硅藻门为主。5种填料反应器水体中的氮循环转化功能菌数量明显高于无填料反应器,其中陶粒反应器中数量最高,与水化学分析结果相吻合。陶粒对生境修复有着一定的促进作用。
Restoration and maintenance of stable and diverse properties of river and lake eco-system is difficult. According to the eutrophication of Beijing urban river supplemented by reclaimed water, volcanic rocks, coke, zeolite, ceramsite and artificial grass were selected as fillers to investigate their purification effects and mechanism of species formation in water bodies supplemented by reclaimed water. Results indicated that the change of indexes from the ef- fluent of the reactor filled with ceramsite was the most remarkable, and nutrients such as nitrogen and phosphorus were better reduced. Slight difference of attached bacteria species was observed on the surface of the five fillers such as volcanic rocks,coke,zeolite,ceramsite and artificial grass. Most of the phytoplankton species were dominated by dia- toms. The amount of nitrogen cycling transformation functional bacteria from water bodies of five reactors were sig nificantly higher than the reactor without fillers, wherein the amount of ceramsite reactors was the highest,which was consistent with the results of water chemistry analysis. Ceramsite showed promoting effect for habitat restoration.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2017年第10期1122-1126,共5页
Environmental Pollution & Control
基金
北京市科技计划项目(No.Z151100002115008)
国家水体污染控制与治理科技重大专项(No.2014ZX07203-010)
关键词
再生水
填料
物种形成
多样性
reclaimed water
filler
species formation
diversity
