{"title":"典型工业废水处理工艺中的盐暴露和减排策略","authors":"Xiong Ke, Huiling He, Zhi Qin, Tuo Wei, Acong Chen, Qing Wang, Guanglei Qiu, Chaohai Wei","doi":"10.1016/j.jclepro.2024.144470","DOIUrl":null,"url":null,"abstract":"Zero-discharge industrial wastewater treatment is an inevitable goal that enterprises seek for the green and sustainable development. However, the generation and treatment of mixed salt present an enormous challenge. This study, taking the practical case of coking wastewater treatment, analyzes the influencing factors of salt and proposes a load salt reduction strategy. The results show that chemical oxygen demand (COD) is the main factor for the change in salt content. When the influent COD of coking wastewater is 3863.93 ± 466.61 mg/L, the relationship between salt reduction (y) and the COD change rate (x) in the treatment process follows the ExpGro1 natural exponential function: y = -2.2378 × exp (-x/17.0839) + 2.2570, with a fitting degree of 0.9938. In the case where the economic and environmental benefits of this strategy are positive (with a maximum COD reduction of 0.5796 kg/m<sup>3</sup>), every 1.0 kg/m<sup>3</sup> reduction in COD will result in a reduction of 2.5002 ± 0.2980 mS/cm·m<sup>3</sup> in salinity, 3.7391 ± 0.9245 CNY/m<sup>3</sup> in operating costs, and 1.4989 ± 0.6509 kg CO<sub>2</sub>/m<sup>3</sup> in carbon emissions. Moreover, this study proves that the adsorption - oxic / hydrolytic & heterotrophic denitrification / oxic (A-OHO) process can effectively reduce the load salt. Other salt reduction strategies (technology salt reduction and cycle salt reduction) and the concept of strategic cooperative operation are also further explored.","PeriodicalId":349,"journal":{"name":"Journal of Cleaner Production","volume":"21 1","pages":""},"PeriodicalIF":9.7000,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Salt Exposure and Emission Reduction Strategies in Typical Industrial Wastewater Treatment Processes\",\"authors\":\"Xiong Ke, Huiling He, Zhi Qin, Tuo Wei, Acong Chen, Qing Wang, Guanglei Qiu, Chaohai Wei\",\"doi\":\"10.1016/j.jclepro.2024.144470\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Zero-discharge industrial wastewater treatment is an inevitable goal that enterprises seek for the green and sustainable development. However, the generation and treatment of mixed salt present an enormous challenge. This study, taking the practical case of coking wastewater treatment, analyzes the influencing factors of salt and proposes a load salt reduction strategy. The results show that chemical oxygen demand (COD) is the main factor for the change in salt content. When the influent COD of coking wastewater is 3863.93 ± 466.61 mg/L, the relationship between salt reduction (y) and the COD change rate (x) in the treatment process follows the ExpGro1 natural exponential function: y = -2.2378 × exp (-x/17.0839) + 2.2570, with a fitting degree of 0.9938. In the case where the economic and environmental benefits of this strategy are positive (with a maximum COD reduction of 0.5796 kg/m<sup>3</sup>), every 1.0 kg/m<sup>3</sup> reduction in COD will result in a reduction of 2.5002 ± 0.2980 mS/cm·m<sup>3</sup> in salinity, 3.7391 ± 0.9245 CNY/m<sup>3</sup> in operating costs, and 1.4989 ± 0.6509 kg CO<sub>2</sub>/m<sup>3</sup> in carbon emissions. Moreover, this study proves that the adsorption - oxic / hydrolytic & heterotrophic denitrification / oxic (A-OHO) process can effectively reduce the load salt. Other salt reduction strategies (technology salt reduction and cycle salt reduction) and the concept of strategic cooperative operation are also further explored.\",\"PeriodicalId\":349,\"journal\":{\"name\":\"Journal of Cleaner Production\",\"volume\":\"21 1\",\"pages\":\"\"},\"PeriodicalIF\":9.7000,\"publicationDate\":\"2024-12-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Cleaner Production\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.1016/j.jclepro.2024.144470\",\"RegionNum\":1,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Cleaner Production","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1016/j.jclepro.2024.144470","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
Salt Exposure and Emission Reduction Strategies in Typical Industrial Wastewater Treatment Processes
Zero-discharge industrial wastewater treatment is an inevitable goal that enterprises seek for the green and sustainable development. However, the generation and treatment of mixed salt present an enormous challenge. This study, taking the practical case of coking wastewater treatment, analyzes the influencing factors of salt and proposes a load salt reduction strategy. The results show that chemical oxygen demand (COD) is the main factor for the change in salt content. When the influent COD of coking wastewater is 3863.93 ± 466.61 mg/L, the relationship between salt reduction (y) and the COD change rate (x) in the treatment process follows the ExpGro1 natural exponential function: y = -2.2378 × exp (-x/17.0839) + 2.2570, with a fitting degree of 0.9938. In the case where the economic and environmental benefits of this strategy are positive (with a maximum COD reduction of 0.5796 kg/m3), every 1.0 kg/m3 reduction in COD will result in a reduction of 2.5002 ± 0.2980 mS/cm·m3 in salinity, 3.7391 ± 0.9245 CNY/m3 in operating costs, and 1.4989 ± 0.6509 kg CO2/m3 in carbon emissions. Moreover, this study proves that the adsorption - oxic / hydrolytic & heterotrophic denitrification / oxic (A-OHO) process can effectively reduce the load salt. Other salt reduction strategies (technology salt reduction and cycle salt reduction) and the concept of strategic cooperative operation are also further explored.
期刊介绍:
The Journal of Cleaner Production is an international, transdisciplinary journal that addresses and discusses theoretical and practical Cleaner Production, Environmental, and Sustainability issues. It aims to help societies become more sustainable by focusing on the concept of 'Cleaner Production', which aims at preventing waste production and increasing efficiencies in energy, water, resources, and human capital use. The journal serves as a platform for corporations, governments, education institutions, regions, and societies to engage in discussions and research related to Cleaner Production, environmental, and sustainability practices.