| 响应面法优化CANON工艺处理猪场沼液脱氮性能研究 |
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| 引用本文： | 王子凌,信欣,刘琴,杨豪,曹惜霜.响应面法优化CANON工艺处理猪场沼液脱氮性能研究[J].环境科学研究,2020,33(10):2326-2334. |
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| 作者姓名： | 王子凌 信欣 刘琴 杨豪 曹惜霜 |
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| 作者单位： | 成都信息工程大学资源环境学院, 四川 成都 610225 |
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| 基金项目： | 四川省教育厅科研项目（No.172A0067）；大学生创新创业训练计划项目（No.201810621056） |
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| 摘 要： | 为了得到全程自养脱氮（completely autotrophic nitrogen removal over nitrite，CANON）工艺处理猪场沼液脱氮性能的最佳工艺条件，以处理实际猪场沼液的连续流CANON工艺为研究对象，采用BBD响应面法优化其关键运行参数，探究了HRT（水力停留时间）、温度和进水ρ（NH4+-N）各因素的交互作用.结果表明:①HRT、温度和进水ρ（NH4+-N）对反应器脱氮效率均有显著影响，且数学模型拟合度良好，各因素对TN、NH4+-N去除率的影响程度由强到弱依次为进水ρ（NH4+-N）> HRT >温度.②通过BBD响应面法获得最佳脱氮条件为HRT 1.35 d、温度34.4℃、进水ρ（NH4+-N）415 mg/L.在接近响应面优化后的条件下进行验证试验，得到出水ρ（NH4+-N）平均值为74.68 mg/L，NH4+-N去除率为83.05%；出水ρ（TN）平均值为108.28 mg/L，TN去除率为73.91%，与模型预测值较接近.研究显示，BBD响应面法能在较少的试验次数下检验影响因素之间的交互作用，可科学地优化CANON工艺处理猪场沼液的脱氮性能.
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| 关 键 词： | 猪场沼液 自养脱氮 全程自养脱氮工艺 响应面法 |
| 收稿时间： | 2019/9/5 0:00:00 |
| 修稿时间： | 2020/5/17 0:00:00 |
Optimization of Denitrification Performance of CANON Process for Treating Anaerobic Digester Liquor of Swine Wastewater by Response Surface Methodology |
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| WANG Ziling,XIN Xin,LIU Qin,YANG Hao,CAO Xishuang.Optimization of Denitrification Performance of CANON Process for Treating Anaerobic Digester Liquor of Swine Wastewater by Response Surface Methodology[J].Research of Environmental Sciences,2020,33(10):2326-2334. |
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| Authors: | WANG Ziling XIN Xin LIU Qin YANG Hao CAO Xishuang |
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| Affiliation: | College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, China |
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| Abstract: | The BBD response surface methodology was used to evaluate the optimal denitrification performance of completely autotrophic nitrogen removal over nitrite (CANON) process for treating anaerobic digester liquor of swine wastewater (ADLSW to obtain the optimum process parameters. The combined effects of hydraulic retention time (HRT), temperature and NH4+-N concentration on the removal of TN and NH4+-N in the CANON process were studied in this work. The results showed that:(1) HRT, temperature and NH4+-N concentration could significantly influence the TN and NH4+-N removal efficiency and the model equation and experimental data correlated well. The influence of experimental factors was examined in this order:NH4+-N concentration > HRT > temperature. (2) The theoretical optimal nitrogen removal conditions were HRT 1.35 d, temperature 34.4℃, and ammonia nitrogen concentration 415 mg/L. A verification experiment was carried out under optimal conditions for 30 d. During the operation period, the average NH4+-N and TN in effluent could reach 74.68 and 108.28 mg/L, respectively. The average NH4+-N removal efficiency and TN removal rate were 83.05% and 73.91%, respectively, which were consistent with the predicted value by the model equation. This indicated that the BBD response surface methodology can test the interaction between the influencing factors in a small number of experiments, and successfully optimize general operation parameters of the CANON processes for the treatment of ADLSW. |
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| Keywords: | anaerobic digester liquor of swine wastewater autotrophic nitrogen removal completely autotrophic nitrogen removal over nitrite response surface methodology |
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