摘要
通过水培试验,研究狐尾藻对生猪养殖场沼液的净化能力,在此基础上分析20、40、60 d 3个不同水力停留时间对狐尾藻生物量、植株养分、水体CODCr、氨氮、硝态氮、亚硝态氮、总磷、溶解氧及pH变化的影响。结果表明:20%~30%沼液可以提高狐尾藻生物量和其体内氮磷钾含量,处理组相比空白组,生物量可以提高1.6~4.9倍、氮磷钾分别可以提高1.5~2.0、1.57~1.90、1.35~1.88倍;狐尾藻对沼液有一定净化能力,当水力停留时间为40 d时,狐尾藻对沼液的处理效果最好,沼液CODCr、氨氮及总磷去除率分别为65.99%、59.54%及90.06%。鉴于此,狐尾藻可作为猪场沼液净化的理想水生植物,具有良好的应用前景。
This study investigated the purification capacity of Myriophyllum spicatum for biogas slurry from pig farms using hydroponics methods. Effects of hydraulic retention on biomass, nutrients, CODcr, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, total phosphorus, dissolved oxygen, and pH were analyzcd over 20, 40 d and 60 d. Results indicated that the proportion of biogas slurry increased the biomass and N, P and K content in 20%-30% ofM. spicatum. Compared with the control group, the biomass in the processing group increased 1.6- 4.9 times; the content of N, P and K increased 1.5 -2.0 times, 1.57-1.90 times and 1.35-1.88 times, respectively. Therefore, M. spicatum was able to purify biogas slurry. The purification of nutrients performed best when the hydraulic retention time was 40 d. The CODa, ammonia nitrogen and total phosphorus removal rate reached 65.99%, 59.54% and 90.06%, respectively. Therefore, M. spicatum is an ideal wetland plant with good potential for wetlands construeted for the biological treatment of biogas slurry from pig farms.
作者
吴晓梅
叶美锋
吴飞龙
黄薇
林代炎
WU Xiao-mei;YE Mei-feng;WU Fei-long;HUANG Wei;LIN Dai-yan(Agricuhural-Engineering Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China;Institute of Quality Standards and Detecting Technology, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China)
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2018年第4期796-803,共8页
Journal of Agro-Environment Science
基金
福建省省属公益类科研院所专项(20151015-1
2017R1014-4)~~
关键词
狐尾藻
沼液
水力停留时间
氨氮
溶解氧
Myriophyllum spicatum
biogas slurry
hydraulic retention time
ammonia nitrogen
dissolved oxygen
