现代煤化工废水近零排放技术集成与优化建议

文章介绍了现代煤化工产业的发展现状及其面临的环境挑战，并对现代煤化工废水组成及特性进行了分析。通过对有机废水和含盐废水进行分类收集、分质处理、分级回用，现代煤化工废水处理系统从重视单元技术发展为统筹考虑工艺衔接和源头治理的关键技术集成，形成了废水预处理-生化处理-再生水回用-含盐废水膜处理-蒸发结晶处理的基本技术框架。同时，针对现代煤化工项目废水处理系统实际运行中出现的问题进行分析，提出解决思路，优化技术集成，进一步破解现代煤化工废水近零排放的技术瓶颈，降低废水近零排放的经济成本并提高运行稳定性。

RECOMMENDATIONS ON INTEGRATION AND OPTIMIZATION OF NEAR-ZERO DISCHARGE TECHNOLOGY FOR WASTEWATER FROM MODERN COAL CHEMICAL INDUSTRY

This paper introduced the development status and environmental challenges of modern coal chemical industry, and analyzed the composition and characteristics of wastewater in modern coal chemical industry. Through the classification and collection, treatment and reuse for organic wastewater and salinity wastewater, the focus of the wastewater treatment system in modern coal chemical industry has evolved from unit technology to key technology integration considering process convergence and control from the source, forming the basic technical framework of Wastewater Pretreatment-Biological Treatment-Reuse of Reclaimed Wastewater-Membrane Treatment of Salinity Wastewater-Evaporative Crystallization Treatment. At the same time, the paper analyzed the problems in the actual operation of wastewater treatment system of modern coal chemical projects, put forward solutions and optimized the integration of the technologies, further broke through the technical bottleneck of near-zero discharge for wastewater in modern coal chemical industry, reduced the economic cost of near-zero discharge, and improved the stability of operation.