| Pretreatment of metallurgical sewage via vacuum distillation driven by low-temperature exhausted gas from steel plants | |
| Alternative Title | Pretreatment of metallurgical sewage via vacuum distillation driven by low-temperature exhausted gas from steel plants |
| Wang Lianyong1; Liu Chao2; Ye Zhu1; Sun Wenqiang1 | |
| 2018 | |
| Source Publication | JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
 |
| ISSN | 1006-706X |
| Volume | 25Issue:3Pages:291-297 |
| Abstract | The metallurgical sewage has very complex component and a significant environmental perniciousness and needs high treatment costs. In addition, too much low-temperature waste heat is emitted owing to the lack of suitable users. Considering these concerns, a low-temperature-driven pretreatment method via vacuum distillation was proposed to treat the sewage from the metallurgical production. It uses the sensible heat carried by low-temperature exhausted gases to drive the distillation of sewage. The distilled water can be reused into the process as new water supply, while the enriched wastewater is discharged into the sewage treatment center for subsequent treatment. Converter dust removal sewage was chosen to perform an experimental observation. The variations of chemical oxygen demand, ammonia nitrogen, suspended solids, electrical conductivity, and pH of the condensate under different vacuum degrees and evaporation rates were mainly investigated. It can be found that the quality of the condensate gets better under certain conditions, which validates the feasibility of the proposed approach. Furthermore, by comprehensively analyzing the water quality indices and their influencing factors, the optimal vacuum degree was suggested to be controlled between 0.07 and 0.09 MPa, and the best evaporation rate was between 40 and 60%. |
| Other Abstract | The metallurgical sewage has very complex component and a significant environmental perniciousness and needs high treatment costs. In addition, too much low-temperature waste heat is emitted owing to the lack of suitable users. Considering these concerns, a low-temperature-driven pretreatment method via vacuum distillation was proposed to treat the sewage from the metallurgical production. It uses the sensible heat carried by low-temperature exhausted gases to drive the distillation of sewage. The distilled water can be reused into the process as new water supply, while the enriched wastewater is discharged into the sewage treatment center for subsequent treatment. Converter dust removal sewage was chosen to perform an experimental observation. The variations of chemical oxygen demand, ammonia nitrogen, suspended solids, electrical conductivity, and pH of the condensate under different vacuum degrees and evaporation rates were mainly investigated. It can be found that the quality of the condensate gets better under certain conditions, which validates the feasibility of the proposed approach. Furthermore, by comprehensively analyzing the water quality indices and their influencing factors, the optimal vacuum degree was suggested to be controlled between 0.07 and 0.09 MPa, and the best evaporation rate was between 40 and 60%. |
| Keyword | WASTE HEAT INDUSTRY WATER Metallurgical sewage Vacuum distillation Low-temperature waste heat Steel plant |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [National Natural Science Foundation of China] ; [China Scholarship Council] ; [Fundamental Research Funds for the China Central Universities] |
| CSCD ID | CSCD:6311128 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/157339 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.东北大学 2.中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Wang Lianyong,Liu Chao,Ye Zhu,et al. Pretreatment of metallurgical sewage via vacuum distillation driven by low-temperature exhausted gas from steel plants[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2018,25(3):291-297. |
| APA | Wang Lianyong,Liu Chao,Ye Zhu,&Sun Wenqiang.(2018).Pretreatment of metallurgical sewage via vacuum distillation driven by low-temperature exhausted gas from steel plants.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,25(3),291-297. |
| MLA | Wang Lianyong,et al."Pretreatment of metallurgical sewage via vacuum distillation driven by low-temperature exhausted gas from steel plants".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 25.3(2018):291-297. |
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