The Feasibility Research on Reusing High Salinity Wastewater as a Plant Nutrient Medium for Plant Hydroponics in CELSS  

作　　者：Liangchang Zhang Yurong Xue You Wang Chengbo Zhan Weidang Ai Xingyan Wang 

机构地区：[1]National Key Laboratory of Human Factors Engineering,China Astronaut Research and Training Center,Beijing 100094,China [2]Department of Environmental Science and Engineering,College of Environment and Resources,Xiangtan University,Xiangtan 411105,China [3]Space Institute of Southern China,Shenzhen 518117,China

出　　处：《Space(Science & Technology)》2022年第1期370-380,共11页空间科学与技术（英文）

基　　金：supported by the Foundation of National Key Laboratory of Human Factors Engineering(Grant No.SYFD061908 and 6142222200710).

摘　　要：The reuse of wastewater is a key problem in controlled ecological life support system(CELSS).In this study,the feasibility to reuse the treated wastewater(including sanitary wastewater and urine wastewater)as a plant hydroponic medium was verified.Two salt-tolerant plants,apium graveolens Linn(celery)and mesembryanthemum cordifolium L.F.(cordifolium),were cultivated with the reused medium or Hoagland nutrient solution,and the characteristics of crop growth,hydroponic medium composition,and elements absorption by plants were investigated.The results showed that the reused medium replenished with micronutrient elements could maintain the normal growth of cordifolium and celery crops.The biomass productivity of cordifolium cultivated by the recycled medium(121.53 g FW/strain)was higher than that cultivated by Hoagland nutrient solution(98.33 g FW/strain).The nutrient elements accumulation in plant dry mass indicated that plants could effectively utilize the recycled mineral elements in wastewater,and cordifolium exhibited better stability and adaptability to salt-induced environment.The absorption capacity of Na and Cl elements in cordifolium cultivated within the reused medium was the highest,which was 4.54%DW and 2.63%DW,respectively.This study demonstrated the feasibility to directly reuse domestic wastewater as the main ingredient for plant hydroponics,which could provide insights into design and operation of plant hydroponics system and water circulation system in CELSS.

关 键 词：WASTEWATER PLANT utilize 

分 类 号：X703[环境科学与工程—环境工程]