生物炭制备及其在水处理中的应用  

Preparation of Biochar and its Application in Water Treatment

作　　者：钟文晶 符帝俊 齐丹 刘瑞娜 卢徐节 ZHONG Wenjing;FU Dijun;QI Dan;LIU Ruina;LU Xujie(Hainan Tropical Ocean University,College of Ecological Environment,Sanya 572022,China)

机构地区：[1]海南热带海洋学院生态环境学院,海南三亚572022

出　　处：《水处理技术》2023年第1期26-30,共5页Technology of Water Treatment

基　　金：海南省自然科学基金项目(421MS051);三亚市农业科技创新项目(2019NK04);2021年校级硕士研究生创新项目(RHDYC-202118)(RHDYC-202111)。

摘　　要：在不同热解温度下(300、500、700℃)制备椰壳生物炭,分析其理化性质,研究采用室内模拟实验,测定污水中总氮(TN)、总磷(TP)和氨氮(NH_(4)^(+)-N)含量,探讨不同生物炭投加量(质量分数分别为0、2%、4%、6%和8%)对污水中氮、磷元素的影响。结果表明,污水中投加生物炭对氮、磷元素的去除具有良好的处理效果,投加量为2%、4%、6%和8%与不投加生物炭的对照相比,TP的去除率有效增加9.9%、8.3%、5.6%、8.7%(P<0.05),TN的去除率有效增加2.5%、5.6%、8.5%、16.7%(P<0.05),NH_(4)^(+)-N的去除率有效增加2.2%、2.0%、2.1%、2.7%;该实验中对污水氮磷去除效果最佳的生物炭投加量为2%和8%;投加生物炭能够有效去除污水中TN和TP,是解决目前生活污水处理领域的除磷效率低、成本高、难彻底的问题的有效措施。Pyrolysis of waste biomass into biomass carbon and being applied in urban domestic sewage treatment can not only realize the reasonable disposal and resource utilization of biomass,but also achieve the purpose of"treating waste by waste".In this experiment,coconut shell biochar was prepared at 300℃,700℃)to analyze its physical and chemical properties.Indoor simulation test was used to determine total nitrogen(TN),total phosphorus(TP)and ammonia nitrogen(NH_(4)^(+)-N)content and explore the effect of different biocarbon inputs(0%,2%,4%,4%,6%and 8%respectively).The results show that The addition of biochar has a good treatment effect on the removal of nitrogen and phosphorus elements,Adments were 2%,4%,6%and 8%compared with controls without biochar,The removal rate of total phosphorus was effectively increased by 9.9%,8.3%,5.6%,and 8.7%(P<0.05),The removal rate of total nitrogen was effectively increased by 2.5%,5.6%,8.5%,and 16.7%(P<0.05),The removal rate of ammonia nitrogen was effectively increased by 2.2%,2.0%,2.1%and 2.7%;The amount of the best biocarbon injection for sewage nitrogen and phosphorus removal was 2%and 8%;The addition of biochar can effectively remove TN and TP,from sewage It is an effective measure to solve the problems of low phosphorus removal efficiency,high cost and thorough difficulty in the field of domestic sewage treatment.

关 键 词：生物炭 污水 氮磷去除 以废治废 椰壳 

分 类 号：TQ424[化学工程]