流化床生物反应器中蒸馏废水生物甲烷化的数学建模

S. M. Hossain, M. Das
{"title":"流化床生物反应器中蒸馏废水生物甲烷化的数学建模","authors":"S. M. Hossain, M. Das","doi":"10.3329/CERB.V14I1.4224","DOIUrl":null,"url":null,"abstract":"An anaerobic fluidized- bed reactor was designed to treat distillery wastewaters for biogas generation using actively digested aerobic sludge of a sewage plant. The optimum digestion time was 8 h and optimum initial pH of feed was observed as 7.5 respectively. The optimum temperature of feed was 40°C and optimum feed flow is 14 L/ min with maximum OLR was 39.513 kg COD m -3 h -1 respectively. The OLR was calculated on the basis of COD inlet in the bioreactor at di\u000berent flow rates. Maximum CH 4 gas concentration was 63.56 % (v/v) of the total (0.835 m 3 /kg COD m -3 h -1 ) biogas generation, corresponding to 0.530 m 3 /kg COD m -3 h -1 at optimum digestion parameters. Maximum COD and BOD reduction of the distillery wastewaters were 76.82% (w/w) and 81.65% (w/w) with maximum OLR of 39.513 kg COD m -3 h -1 at optimum conditions respectively. The rate constant ( k ) was measured as 0.31 h -1 in fluidized-bed bioreactor and followed a first order rate equation. The specific growth rate ( μ ) was 0.99 h -1 and maximum sp. growth rate ( μ max ) was 1.98 h -1 respectively. The bacterial yield coefficient ( Y ) was determined as 0.319 /kg COD m -3 h -1 at optimum parameters. The studies also dealt with the mathematical modeling of the experimental data on biomethanation and suggested modeling equations relating to kinetic parameter (rate constant, k ), maximum specific growth rate ( μ max ) with respect to COD (substrate) removal. The mathematical model was also analyzed for hydrodynamic pressure ( Δp ) vs feed flow ( u ) and hydrodynamic pressure ( Δp ) with respect to CH 4 gas yields. The linear and non-linear equations which fitted the models were obtained. Keywords: Biomethanation, anaerobic, optimum condition, modeling DOI = 10.3329/cerb.v14i1.4224 Chemical Engineering Research Bulletin 14 (2010) 37-43","PeriodicalId":9756,"journal":{"name":"Chemical Engineering Research Bulletin","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2010-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Mathematical Modeling of Distillery Wastewater Biomethanation in Fluidized-bed Bioreactor\",\"authors\":\"S. M. Hossain, M. Das\",\"doi\":\"10.3329/CERB.V14I1.4224\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An anaerobic fluidized- bed reactor was designed to treat distillery wastewaters for biogas generation using actively digested aerobic sludge of a sewage plant. The optimum digestion time was 8 h and optimum initial pH of feed was observed as 7.5 respectively. The optimum temperature of feed was 40°C and optimum feed flow is 14 L/ min with maximum OLR was 39.513 kg COD m -3 h -1 respectively. The OLR was calculated on the basis of COD inlet in the bioreactor at di\\u000berent flow rates. Maximum CH 4 gas concentration was 63.56 % (v/v) of the total (0.835 m 3 /kg COD m -3 h -1 ) biogas generation, corresponding to 0.530 m 3 /kg COD m -3 h -1 at optimum digestion parameters. Maximum COD and BOD reduction of the distillery wastewaters were 76.82% (w/w) and 81.65% (w/w) with maximum OLR of 39.513 kg COD m -3 h -1 at optimum conditions respectively. The rate constant ( k ) was measured as 0.31 h -1 in fluidized-bed bioreactor and followed a first order rate equation. The specific growth rate ( μ ) was 0.99 h -1 and maximum sp. growth rate ( μ max ) was 1.98 h -1 respectively. The bacterial yield coefficient ( Y ) was determined as 0.319 /kg COD m -3 h -1 at optimum parameters. The studies also dealt with the mathematical modeling of the experimental data on biomethanation and suggested modeling equations relating to kinetic parameter (rate constant, k ), maximum specific growth rate ( μ max ) with respect to COD (substrate) removal. The mathematical model was also analyzed for hydrodynamic pressure ( Δp ) vs feed flow ( u ) and hydrodynamic pressure ( Δp ) with respect to CH 4 gas yields. The linear and non-linear equations which fitted the models were obtained. Keywords: Biomethanation, anaerobic, optimum condition, modeling DOI = 10.3329/cerb.v14i1.4224 Chemical Engineering Research Bulletin 14 (2010) 37-43\",\"PeriodicalId\":9756,\"journal\":{\"name\":\"Chemical Engineering Research Bulletin\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2010-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Engineering Research Bulletin\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3329/CERB.V14I1.4224\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Research Bulletin","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3329/CERB.V14I1.4224","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1

摘要

设计了厌氧流化床反应器,利用某污水厂活性消化好氧污泥处理蒸馏废水产沼气。最佳消化时间为8 h,饲料初始pH为7.5。最佳进料温度为40℃,最佳进料流量为14 L/ min,最大OLR为39.513 kg COD m -3 h -1。OLR是根据不同流量下生物反应器的COD进水量来计算的。在最佳消化参数下,最大甲烷气体浓度为总沼气(0.835 m 3 /kg COD m -3 h -1)的63.56% (v/v),对应于0.530 m 3 /kg COD m -3 h -1。在最佳工艺条件下,蒸馏废水COD和BOD的最大降幅分别为76.82% (w/w)和81.65% (w/w),最大OLR分别为39.513 kg COD m -3 h -1。在流化床生物反应器中测定的速率常数(k)为0.31 h -1,符合一级速率方程。比生长速率(μ)为0.99 h -1,最大sp生长速率(μ max)为1.98 h -1。在最佳工艺条件下,细菌产量系数为0.319 /kg COD m -3 h -1。研究还处理了生物甲烷化实验数据的数学建模,并提出了与动力学参数(速率常数,k)、最大特定生长速率(μ max)有关的COD(底物)去除的建模方程。还分析了动水压力(Δp)与进料流量(u)和动水压力(Δp)对甲烷产气量的数学模型。得到了与模型拟合的线性和非线性方程。关键词:生物甲烷化,厌氧,最佳条件,建模DOI = 10.3329/cerb.v14i1.4224化工研究通报14 (2010)37-43
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mathematical Modeling of Distillery Wastewater Biomethanation in Fluidized-bed Bioreactor
An anaerobic fluidized- bed reactor was designed to treat distillery wastewaters for biogas generation using actively digested aerobic sludge of a sewage plant. The optimum digestion time was 8 h and optimum initial pH of feed was observed as 7.5 respectively. The optimum temperature of feed was 40°C and optimum feed flow is 14 L/ min with maximum OLR was 39.513 kg COD m -3 h -1 respectively. The OLR was calculated on the basis of COD inlet in the bioreactor at di erent flow rates. Maximum CH 4 gas concentration was 63.56 % (v/v) of the total (0.835 m 3 /kg COD m -3 h -1 ) biogas generation, corresponding to 0.530 m 3 /kg COD m -3 h -1 at optimum digestion parameters. Maximum COD and BOD reduction of the distillery wastewaters were 76.82% (w/w) and 81.65% (w/w) with maximum OLR of 39.513 kg COD m -3 h -1 at optimum conditions respectively. The rate constant ( k ) was measured as 0.31 h -1 in fluidized-bed bioreactor and followed a first order rate equation. The specific growth rate ( μ ) was 0.99 h -1 and maximum sp. growth rate ( μ max ) was 1.98 h -1 respectively. The bacterial yield coefficient ( Y ) was determined as 0.319 /kg COD m -3 h -1 at optimum parameters. The studies also dealt with the mathematical modeling of the experimental data on biomethanation and suggested modeling equations relating to kinetic parameter (rate constant, k ), maximum specific growth rate ( μ max ) with respect to COD (substrate) removal. The mathematical model was also analyzed for hydrodynamic pressure ( Δp ) vs feed flow ( u ) and hydrodynamic pressure ( Δp ) with respect to CH 4 gas yields. The linear and non-linear equations which fitted the models were obtained. Keywords: Biomethanation, anaerobic, optimum condition, modeling DOI = 10.3329/cerb.v14i1.4224 Chemical Engineering Research Bulletin 14 (2010) 37-43
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信