低温条件下黑藻对模拟污水的净化能力  

The Purification Ability of Hydrilla verticillata on Simulated Wastewater under Low Temperature

作　　者：邹贤[1,2] 高红杰[2] 宋永会[2] 彭剑峰[2] 李蕊[2] 张卉[1] 

机构地区：[1]沈阳化工大学环境与安全工程学院,辽宁沈阳110142 [2]中国环境科学研究院城市水环境科技创新基地,北京100012

出　　处：《环境工程技术学报》2013年第4期305-310,共6页Journal of Environmental Engineering Technology

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07202-005)

摘　　要：选取沉水植物黑藻为研究对象,在实验室内模拟中国北方冬季低温环境(4℃、500～800 lx),研究黑藻的投加量对模拟污水中氮的净化效果及其对水体的影响。结果表明,在试验周期内,黑藻在该低温条件下能维持基本生命活动,通过光合作用可提高水体pH至8.0以上,维持水体DO浓度为3～5mg/L。黑藻投加量为17.5g/L时对NH+4-N和TN的去除效果最佳,最终去除率分别为25.29%和20.97%。投放黑藻后,一方面强化了植物吸收;另一方面,通过改变系统环境,强化了硝化反硝化作用和氨的挥发作用,实现了水体中氮的强化去除。Submerged plant were paid wide attention polluted water body. The purification ability of to by both at home and abroad for its purification capacity on verticillata on simulated wastewater was studied under the temperature of 4 ℃ and the light intensity of 500-800 Ix, and the nitrogen removal effects under different dosages of verticillata in simulated wastewater were investigated. The results showed that Hydrilla verticiUata could maintain life activities in the low temperature conditions water was improved to over 8, and the concentration in the experimental period. Simultaneously, the pH of of dissolved oxygen maintained in 3-5 mg/L by the photosynthesis of Hydrilla verticillata. When the dosage of verticillata was 17.5 g/L, the highest removal rate of NH4^＋ - N and TN could be obtained, being 25.29% and 20.97%, respectively. Due to the addition of Hydrilla verticillata, the plant uptake capacity of nitrogen was intensified, and the nitrification, denitrification and ammonia volatilization were also strengthened due to the change of micro environment of the system, thus realizing intensive removal of nitrogen in the water.

关 键 词：低温 黑藻 污水 NH4^+—N 净化 

分 类 号：X703.1[环境科学与工程—环境工程]