Nutrients removal and substrate enzyme activities in vertical subsurface flow constructed wetlands for mariculture wastewater treatment: Effects of ammonia nitrogen loading rates and salinity levels

被引：33
|
作者：
Li, Meng [1 ]
Liang, Zhenlin [1 ]
Callier, Myriam D. [2 ]
d'orbcastel, Emmanuelle Roque [3 ]
Sun, Guoxiang [4 ,6 ]
Ma, Xiaona [4 ,5 ]
Li, Xian [4 ,6 ]
Wang, Shunkui [7 ]
Liu, Ying [8 ]
Song, Xiefa [1 ]
机构：
[1] Ocean Univ China, Fisheries Coll, Qingdao 266001, Peoples R China
[2] Univ Montpellier, CNRS, IFREMER, UMR MARBEC,IRD, Chemin Maguelone, F-34250 Palavas Les Flots, France
[3] Univ Montpellier, CNRS, IFREMER, UMR MARBEC,IRD, Ave Jean Monnet,CS 30171, F-34203 Sete, France
[4] Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
[5] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[6] Natl & Local Joint Engn Lab Ecol Mariculture, Qingdao 266071, Peoples R China
[7] Shandong Oriental Ocean Sci Tech Co Ltd, Yantai 264003, Peoples R China
[8] Dalian Ocean Univ, Dalian 116023, Peoples R China
来源：
MARINE POLLUTION BULLETIN | 2018年 / 131卷
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Mariculture wastewater; Constructed wetland; Salicomia bigelovii; Enzyme activity; Nutrients removal; RECIRCULATING AQUACULTURE SYSTEMS; MICROBIAL COMMUNITY; ATLANTIC SALMON; SOIL; GROWTH; PHOSPHORUS; SELECTION; MICROORGANISMS; FERTILIZATION; OPTIMIZATION;
D O I：
10.1016/j.marpolbul.2018.04.013
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study aims to investigate the effects of ammonia nitrogen loading rates and salinity levels on nutrients removal rates and substrate enzyme activities of constructed wetland (CW) microcosms planted with Salicornia bigelovii treating mariculture wastewater. Activities of urease (UA), dehydrogenase (DA), protease (PrA) and phosphatase (PA) were considered. Using principal component analysis (PCA), nutrient removal index (NRI) and enzyme activity index (EM) were developed to evaluate the effects. The results revealed that increasing ammonia nitrogen loading rates had positive effects on nitrogen removal rates (i.e. NH4-N and DIN) and enhanced substrate enzyme activities. Compared with low salinity (i.e. 15 and 22), high salinity levels (i.e. 29 and 36) enhanced nutrients removal rates, DA and UA, but weaken PA and PrA. In conclusion, CW microcosms with Salicornia bigelovii can be used for the removal of nutrients under a range of ammonia nitrogen loadings and high salinity levels.
引用
收藏
页码：142 / 150
页数：9
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