Lin Lin, Xiangcheng Kong, Lipeng He, Boya Zhang, Shujuan Liu, Jianliang Xue, Bo Wang, Meng Zheng, Lijun Chen
{"title":"蒸发过程中有机杂质影响下高盐废水多元盐相平衡关系研究","authors":"Lin Lin, Xiangcheng Kong, Lipeng He, Boya Zhang, Shujuan Liu, Jianliang Xue, Bo Wang, Meng Zheng, Lijun Chen","doi":"10.1080/09593330.2025.2549530","DOIUrl":null,"url":null,"abstract":"<p><p>The small amount of organic impurities in the pre-treated saline wastewater will affect the original solubility of the saline wastewater, which is one of the key issues that restrict the evaporation of saline wastewater with near-zero discharge under the working condition. We have investigated the solid-liquid phase equilibrium relationship under typical organic impurities in falling film evaporation tubes with different parameters. Results show the phase diagram of Na<sup>+</sup>, Mg<sup>2+</sup>//Cl<sup>-</sup>-H<sub>2</sub>O in the presence of organic impurities belongs to the phase diagram of a simple system. The phase diagram contains a co-saturation point, two single-variable curves and four crystallization zones. In addition, the overall change in the solubility of the ternary system of Na<sup>+</sup>, Mg<sup>2+</sup>//Cl<sup>-</sup>-H<sub>2</sub>O under organic impurities was not significant with the increase in temperature. However, the solubility of MgCl<sub>2</sub> was more affected by temperature and increased by 5.67% when the temperature increased from 303.15 K to 373.15 K. This study provides a theoretical basis for rational control of salt scaling in the evaporation process of coal chemical industry. It is important to ensure the efficient operation of the evaporator, realize the recycling of inorganic salt products, and ultimately achieve the goal of 'near-zero discharge'.</p>","PeriodicalId":12009,"journal":{"name":"Environmental Technology","volume":" ","pages":"1-9"},"PeriodicalIF":2.0000,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study on multivariate salt phase equilibrium relationship of high-salt wastewater under the influence of organic impurities in evaporation process.\",\"authors\":\"Lin Lin, Xiangcheng Kong, Lipeng He, Boya Zhang, Shujuan Liu, Jianliang Xue, Bo Wang, Meng Zheng, Lijun Chen\",\"doi\":\"10.1080/09593330.2025.2549530\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The small amount of organic impurities in the pre-treated saline wastewater will affect the original solubility of the saline wastewater, which is one of the key issues that restrict the evaporation of saline wastewater with near-zero discharge under the working condition. We have investigated the solid-liquid phase equilibrium relationship under typical organic impurities in falling film evaporation tubes with different parameters. Results show the phase diagram of Na<sup>+</sup>, Mg<sup>2+</sup>//Cl<sup>-</sup>-H<sub>2</sub>O in the presence of organic impurities belongs to the phase diagram of a simple system. The phase diagram contains a co-saturation point, two single-variable curves and four crystallization zones. In addition, the overall change in the solubility of the ternary system of Na<sup>+</sup>, Mg<sup>2+</sup>//Cl<sup>-</sup>-H<sub>2</sub>O under organic impurities was not significant with the increase in temperature. However, the solubility of MgCl<sub>2</sub> was more affected by temperature and increased by 5.67% when the temperature increased from 303.15 K to 373.15 K. This study provides a theoretical basis for rational control of salt scaling in the evaporation process of coal chemical industry. It is important to ensure the efficient operation of the evaporator, realize the recycling of inorganic salt products, and ultimately achieve the goal of 'near-zero discharge'.</p>\",\"PeriodicalId\":12009,\"journal\":{\"name\":\"Environmental Technology\",\"volume\":\" \",\"pages\":\"1-9\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2025-08-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Technology\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://doi.org/10.1080/09593330.2025.2549530\",\"RegionNum\":4,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Technology","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1080/09593330.2025.2549530","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
Study on multivariate salt phase equilibrium relationship of high-salt wastewater under the influence of organic impurities in evaporation process.
The small amount of organic impurities in the pre-treated saline wastewater will affect the original solubility of the saline wastewater, which is one of the key issues that restrict the evaporation of saline wastewater with near-zero discharge under the working condition. We have investigated the solid-liquid phase equilibrium relationship under typical organic impurities in falling film evaporation tubes with different parameters. Results show the phase diagram of Na+, Mg2+//Cl--H2O in the presence of organic impurities belongs to the phase diagram of a simple system. The phase diagram contains a co-saturation point, two single-variable curves and four crystallization zones. In addition, the overall change in the solubility of the ternary system of Na+, Mg2+//Cl--H2O under organic impurities was not significant with the increase in temperature. However, the solubility of MgCl2 was more affected by temperature and increased by 5.67% when the temperature increased from 303.15 K to 373.15 K. This study provides a theoretical basis for rational control of salt scaling in the evaporation process of coal chemical industry. It is important to ensure the efficient operation of the evaporator, realize the recycling of inorganic salt products, and ultimately achieve the goal of 'near-zero discharge'.
期刊介绍:
Environmental Technology is a leading journal for the rapid publication of science and technology papers on a wide range of topics in applied environmental studies, from environmental engineering to environmental biotechnology, the circular economy, municipal and industrial wastewater management, drinking-water treatment, air- and water-pollution control, solid-waste management, industrial hygiene and associated technologies.
Environmental Technology is intended to provide rapid publication of new developments in environmental technology. The journal has an international readership with a broad scientific base. Contributions will be accepted from scientists and engineers in industry, government and universities. Accepted manuscripts are generally published within four months.
Please note that Environmental Technology does not publish any review papers unless for a specified special issue which is decided by the Editor. Please do submit your review papers to our sister journal Environmental Technology Reviews at http://www.tandfonline.com/toc/tetr20/current