摘要
生物质炭填料是一种新型填料,明确该填料的物理属性,通过与砾石石英砂填料实验组进行比较,对比吸附生物膜处理人工污水和池塘污水的效果,研究物化性质以及作为基质附着生物膜净水的能力。结果表明:(1)生物质炭填料的主要成分是SiO_(2)和CaCO_(3),无毒无害,比表面积大(8.92 m^(2)/g)。(2)当水温在21℃左右时,仅靠自身理化性质,填料添加量越多降氮磷效果越显著。当添加量为45 g/L时,159 h的氨氮去除率为91.58%;当添加量为20 g/L时,120 h的正磷酸盐去除率为94.12%。(3)15℃左右水温条件下,当两组填料的添加量均为20 g/L时,生物质炭填料组的降氨氮效果优于砾石石英砂组,但砾石石英砂组降低池塘污水化学需氧量的效果稍好。综上,生物质炭填料除自身能降氮磷外,附着生物膜的能力更强,有更好的净水能力,具有良好的应用潜力。
The biochar substrate is a new type of filler.In this study,we detected the physical properties of biochar substrate,and investigated the effect of adsorption biofilm in treating artificial wastewater and pond effluent compared to gravel quartz sand group.The results showed that:(1)the main components are SiO_(2),CaCO_(3) and other carbonates and oxides,which are non-toxic and harmless,and the specific surface area of the biochar substrate is large(8.92 m^(2)/g).(2)when the water temperature is around 21℃,the more substrates added,the more significant the effect of reducing nitrogen and phosphorus.When the added amount was 45 g/L,the removal rate of ammonia nitrogen at 159 h was 91.58%;when the added amount was 20 g/L,the removal rate of orthophosphate at 120 h was 94.12%.(3)at water temperature around 15℃,when the addition amount is 20 g/L,the ammonia nitrogen reduction effect of the group of biochar substrate is better than that of gravel and quartz sand,but the effect of gravel and quartz sand in reducing chemical oxygen demand from pond sewage is better.In summary,in addition to its own ability to reduce nitrogen and phosphorus,the biochar substrate has a stronger ability to attach biofilms,has better water purification capabilities,and has a good potential application.
作者
石文智
江昊飞
李慷
车轩
刘兴国
刘利平
SHI Wenzhi;JIANG Haofei;LI Kang;CHE Xuan;LIU Xingguo;LIU Liping(Shanghai Engineering Research Center of Aquaculture,Shanghai Ocean University,Shanghai 201306,China;Centre for Research on Environmental Ecology and Fish Nutrion of the Ministry of Agriculture and Rural Affairs,Shanghai Ocean University,Shanghai 201306,China;Fishery Machincry and Instrument Research Institute,Chinese Academy of Fishery Sciences,Shanghai 200092,China)
出处
《上海海洋大学学报》
CAS
CSCD
北大核心
2023年第2期429-440,共12页
Journal of Shanghai Ocean University
基金
国家重点研发计划(2019YFD0900303)
上海市科技兴农重点攻关项目(沪农科创字〔2018〕第2-12号)
科技部中国-东盟海上合作基金项目(DF)
关键词
生物质炭填料
生物膜
基质
人工湿地填料
biochar substrate
biofilm
substrate
constructed wetland filler
作者简介
石文智(1995—),男,硕士研究生,研究方向为鱼类生态养殖。E-mail:1029738499@qq.com;通信作者:刘利平,E-mail:lp-liu@shou.edu.cn
