Nitrogen Removal Improvement by Adding Peat in Deep Soil of Subsurface Wastewater Infiltration System
In order to enhance the nitrogen removal, a subsurface wastewater infiltration system (SWIS) was improved by adding peat in deep soil as carbon source for denitrification process. The effects of addition of carbon source in the underpart of the SWIS on nitrogen removal at different influents (with t...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2014-05-01
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| Series: | Journal of Integrative Agriculture |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311913604013 |
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| author | Pei-zhen CHEN Jian-yu CUI Lin HU Miao-zhuang ZHENG Shan-ping CHENG Jie-wen HUANG Kang-guo MU |
| author_facet | Pei-zhen CHEN Jian-yu CUI Lin HU Miao-zhuang ZHENG Shan-ping CHENG Jie-wen HUANG Kang-guo MU |
| author_sort | Pei-zhen CHEN |
| collection | DOAJ |
| description | In order to enhance the nitrogen removal, a subsurface wastewater infiltration system (SWIS) was improved by adding peat in deep soil as carbon source for denitrification process. The effects of addition of carbon source in the underpart of the SWIS on nitrogen removal at different influents (with the total nitrogen (TN) concentration 40 and 80 mg L−1, respectively) were investigated by soil column simulating experiments. When the relatively light pollution influent with 40 mg L−1 TN was used, the average concentrations of NO3−-N and TN in effluents were (4.69±0.235), (6.18±0.079) mg L−1, respectively, decreased by 32 and 30.8% than the control; the NO3−-N concentration of all effluents was below the maximum contaminant level of 10 mg L−1; as high as 92.67% of the TN removal efficiency was achieved. When relatively heavy pollution influent with 80 mg L−1 TN was used, the average concentrations of NO3−-N and TN in effluents were (10.2±0.265), (12.5±0.148) mg L−1 respectively, decreased by 20 and 21.2% than the control; the NO3−-N concentration of all effluents met the grade III of the national quality standard for ground water of China (GB/T 14848-1993) with the values less than 20 mg L−1; the TN removal efficiency of 94.1% was achieved. In summary, adding peat in the underpart of the SWIS significantly decreased TN and NO3−-N concentration in effluents and the nitrogen removal efficiency improved significantly. |
| format | Article |
| id | doaj-art-fa7988af01d14c65b409ca88b675f1ec |
| institution | Kabale University |
| issn | 2095-3119 |
| language | English |
| publishDate | 2014-05-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj-art-fa7988af01d14c65b409ca88b675f1ec2025-08-20T03:58:04ZengKeAi Communications Co., Ltd.Journal of Integrative Agriculture2095-31192014-05-011351113112010.1016/S2095-3119(13)60401-3Nitrogen Removal Improvement by Adding Peat in Deep Soil of Subsurface Wastewater Infiltration SystemPei-zhen CHEN0Jian-yu CUI1Lin HU2Miao-zhuang ZHENG3Shan-ping CHENG4Jie-wen HUANG5Kang-guo MU6College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P.R.China; CHEN Pei-zhen, Mobile: 15822916682College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P.R.ChinaCollege of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P.R.China; National Energy R&D Center for Non-Food Biomass of China, China Agricultural University, Beijing 100193, P.R.China; Correspondence HU Lin, Tel: +86-10-62733729College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P.R.ChinaCollege of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P.R.ChinaCollege of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P.R.ChinaCollege of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P.R.ChinaIn order to enhance the nitrogen removal, a subsurface wastewater infiltration system (SWIS) was improved by adding peat in deep soil as carbon source for denitrification process. The effects of addition of carbon source in the underpart of the SWIS on nitrogen removal at different influents (with the total nitrogen (TN) concentration 40 and 80 mg L−1, respectively) were investigated by soil column simulating experiments. When the relatively light pollution influent with 40 mg L−1 TN was used, the average concentrations of NO3−-N and TN in effluents were (4.69±0.235), (6.18±0.079) mg L−1, respectively, decreased by 32 and 30.8% than the control; the NO3−-N concentration of all effluents was below the maximum contaminant level of 10 mg L−1; as high as 92.67% of the TN removal efficiency was achieved. When relatively heavy pollution influent with 80 mg L−1 TN was used, the average concentrations of NO3−-N and TN in effluents were (10.2±0.265), (12.5±0.148) mg L−1 respectively, decreased by 20 and 21.2% than the control; the NO3−-N concentration of all effluents met the grade III of the national quality standard for ground water of China (GB/T 14848-1993) with the values less than 20 mg L−1; the TN removal efficiency of 94.1% was achieved. In summary, adding peat in the underpart of the SWIS significantly decreased TN and NO3−-N concentration in effluents and the nitrogen removal efficiency improved significantly.http://www.sciencedirect.com/science/article/pii/S2095311913604013peat additionnitrogen removal efficiencydenitrificationsubsurface wastewater infiltration system |
| spellingShingle | Pei-zhen CHEN Jian-yu CUI Lin HU Miao-zhuang ZHENG Shan-ping CHENG Jie-wen HUANG Kang-guo MU Nitrogen Removal Improvement by Adding Peat in Deep Soil of Subsurface Wastewater Infiltration System Journal of Integrative Agriculture peat addition nitrogen removal efficiency denitrification subsurface wastewater infiltration system |
| title | Nitrogen Removal Improvement by Adding Peat in Deep Soil of Subsurface Wastewater Infiltration System |
| title_full | Nitrogen Removal Improvement by Adding Peat in Deep Soil of Subsurface Wastewater Infiltration System |
| title_fullStr | Nitrogen Removal Improvement by Adding Peat in Deep Soil of Subsurface Wastewater Infiltration System |
| title_full_unstemmed | Nitrogen Removal Improvement by Adding Peat in Deep Soil of Subsurface Wastewater Infiltration System |
| title_short | Nitrogen Removal Improvement by Adding Peat in Deep Soil of Subsurface Wastewater Infiltration System |
| title_sort | nitrogen removal improvement by adding peat in deep soil of subsurface wastewater infiltration system |
| topic | peat addition nitrogen removal efficiency denitrification subsurface wastewater infiltration system |
| url | http://www.sciencedirect.com/science/article/pii/S2095311913604013 |
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