Novel Quantitative Evaluation of Biotreatment Suitability of Wastewater
The development of wastewater treatment industry has gradually entered the high-standard period and the wastewater treatment technology needs to be refined for different types of wastewater. Traditional water quality indicators are not able to explain new problems encountered in the current wastewat...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/7/1038 |
| _version_ | 1797437473519828992 |
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| author | Tianzhi Wang Weijie Wang Hongying Hu Soon-Thiam Khu |
| author_facet | Tianzhi Wang Weijie Wang Hongying Hu Soon-Thiam Khu |
| author_sort | Tianzhi Wang |
| collection | DOAJ |
| description | The development of wastewater treatment industry has gradually entered the high-standard period and the wastewater treatment technology needs to be refined for different types of wastewater. Traditional water quality indicators are not able to explain new problems encountered in the current wastewater treatment process, especially the potential of removing pollutants via biological methods. This research proposed a new method of evaluating the biological treatment process by measuring the oxygen consumption in the biodegradation of pollutants on-the-go and describing the complete biological oxygen consumption process. The biodegradability of wastewater from an actual textile wastewater treatment plant was quantitatively evaluated by analyzing the proportion of different organic pollutions. Results showed that the hydrolytic acidification can improve the biodegradability of textile wastewater by increasing the content of biodegradable organic matter (growth of 86.4%), and air flotation has little effect on the biodegradability of the wastewater. Moreover, the biodegradability of the textile wastewater could be improved by increasing the nitrogen and phosphorus content, which could come from urea and K<sub>2</sub>HPO<sub>4</sub>. Concretely, nitrogen source mainly increases organic matter of rapid bio-treated and organic matter of easy bio-treated by 14.94% and 70.79%, and phosphorus source mainly increases the organic matter of easy bio-treated by 143.75%. We found that the optimum concentration of additional N and P to the textile wastewater was 35 mg/L and 45 mg/L, respectively. This approach holds great application prospects such as risk control, optimizing treatment technology, and management, due to its characteristics of being simple, easy to use, and rapid online implement action. |
| first_indexed | 2024-03-09T11:19:46Z |
| format | Article |
| id | doaj.art-05bb88ed44e649b2bea31f8a2679e0f9 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T11:19:46Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-05bb88ed44e649b2bea31f8a2679e0f92023-12-01T00:19:02ZengMDPI AGWater2073-44412022-03-01147103810.3390/w14071038Novel Quantitative Evaluation of Biotreatment Suitability of WastewaterTianzhi Wang0Weijie Wang1Hongying Hu2Soon-Thiam Khu3School of Environmental Science & Engineering, Tianjin University, Tianjin 300350, ChinaSchool of Environmental Science & Engineering, Tianjin University, Tianjin 300350, ChinaEnvironmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing 100084, ChinaSchool of Environmental Science & Engineering, Tianjin University, Tianjin 300350, ChinaThe development of wastewater treatment industry has gradually entered the high-standard period and the wastewater treatment technology needs to be refined for different types of wastewater. Traditional water quality indicators are not able to explain new problems encountered in the current wastewater treatment process, especially the potential of removing pollutants via biological methods. This research proposed a new method of evaluating the biological treatment process by measuring the oxygen consumption in the biodegradation of pollutants on-the-go and describing the complete biological oxygen consumption process. The biodegradability of wastewater from an actual textile wastewater treatment plant was quantitatively evaluated by analyzing the proportion of different organic pollutions. Results showed that the hydrolytic acidification can improve the biodegradability of textile wastewater by increasing the content of biodegradable organic matter (growth of 86.4%), and air flotation has little effect on the biodegradability of the wastewater. Moreover, the biodegradability of the textile wastewater could be improved by increasing the nitrogen and phosphorus content, which could come from urea and K<sub>2</sub>HPO<sub>4</sub>. Concretely, nitrogen source mainly increases organic matter of rapid bio-treated and organic matter of easy bio-treated by 14.94% and 70.79%, and phosphorus source mainly increases the organic matter of easy bio-treated by 143.75%. We found that the optimum concentration of additional N and P to the textile wastewater was 35 mg/L and 45 mg/L, respectively. This approach holds great application prospects such as risk control, optimizing treatment technology, and management, due to its characteristics of being simple, easy to use, and rapid online implement action.https://www.mdpi.com/2073-4441/14/7/1038wastewater treatmentbiodegradabilityoptimized operating conditionsapplicationhigh standard |
| spellingShingle | Tianzhi Wang Weijie Wang Hongying Hu Soon-Thiam Khu Novel Quantitative Evaluation of Biotreatment Suitability of Wastewater Water wastewater treatment biodegradability optimized operating conditions application high standard |
| title | Novel Quantitative Evaluation of Biotreatment Suitability of Wastewater |
| title_full | Novel Quantitative Evaluation of Biotreatment Suitability of Wastewater |
| title_fullStr | Novel Quantitative Evaluation of Biotreatment Suitability of Wastewater |
| title_full_unstemmed | Novel Quantitative Evaluation of Biotreatment Suitability of Wastewater |
| title_short | Novel Quantitative Evaluation of Biotreatment Suitability of Wastewater |
| title_sort | novel quantitative evaluation of biotreatment suitability of wastewater |
| topic | wastewater treatment biodegradability optimized operating conditions application high standard |
| url | https://www.mdpi.com/2073-4441/14/7/1038 |
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