【摘要】 [目的]探讨湿地植物种类、浮床覆盖面积和处理时间3个因素对含抗生素养殖废水净化效果的影响,为高效利用湿地植物浮床技术去除养殖废水中的传统污染物和抗生素提供依据。[方法]分别利用巴拉草（Brachiaria mutica）和短叶茳芏（Cyperus malaccensis Lam. var.brevifolius）构建了植物浮床,每种植物浮床设置了20%,40%,60%这3个水面覆盖面积,监测了植物浮床在不同处理时间对养殖废水中的化学需氧量（COD）、氮磷和磺胺嘧啶的净化效果。[结果]各处理水质各指标随着运行时间持续变好:pH值变中性;溶解氧（DO）含量增加;氧化还原电位（ORP）上升;COD,氨氮（NH₃-N）,总氮（TN）,总磷（TP）和抗生素磺胺嘧啶（SDZ）浓度持续降低;不同植物种类对水体pH值和ORP值,DO和COD的含量无显著影响,但显著影响水体营养盐的去除;巴拉草浮床对水体中NH₃-N,TN和TP的去除效果优于短叶茳芏浮床;两种植物对SDZ的去除效率相当;总体上,60%的覆盖面积更加有利于水体中污染物的去除,但不利于DO扩散。[结论] 60%覆盖面积的巴拉草浮床,在运行47 d时,去除养殖废水中COD（88%）,NH₃-N（97%）,TN（89%）,TP（94%）和SDZ（43%）的效果最好。更多还原

【Abstract】 [Objective] The effects of wetland plant species, plant coverage and treatment time on the purification of antibiotic-containing livestock waste water were investigated in order to provide the basis for utilization of wetland plant floating beds technology to efficiently remove pollutants and antibiotics from livestock waste water. [Methods] Plant floating beds were constructed using Brachiaria mutica and Cyperus malaccensis Lam. var. brevifolius, respectively. Three different plant coverage areas（20%, 40% and 60%） were set for each plant bed. The purification effects of plant floating beds on chemical oxygen demand（COD）, nitrogen, phosphorus and sulfadiazine（SDZ） were monitored at different treatment times. [Results] The water quality was improved with the treatment time: pH value became neutral, dissolved oxygen（DO） content and oxidation reduction potential（ORP） increased, and the concentrations of COD, nutrients and SDZ decreased. Plant species had no significant effect on water pH value, DO, ORP and COD, but had significant effect on water nutrient removal. B. mutica performed better in the removal of ammonia nitrogen（NH₃-N）, total nitrogen（TN） and total phosphorus（TP） than C. malaccensis Lam. var. brevifolius, but no significant difference was found in terms of SDZ removal between the two plant species. In general, plant beds with 60% coverage area was more conducive to the removal of pollutants in water, but was not conducive to DO diffusion. [Conclusion] The floating beds constructed by B. mutica with 60% plant coverage had the best removal efficiencies. After 47 days of operation, the floating bed simultaneously removed 88% of the COD, 97% NH₃-N, 89% TN, 94% TP and 43% of the SDZ in the wastewater.更多还原