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The Qingxu Fine Chemicals Circular Industry Park was the first in the coking industry to achieve zero wastewater discharge. Author/Source: Coal Chemicals Journal. Date: February 23, 2022. Clicks: 20. Recently, the project for zero wastewater discharge in the coking sector located within the Qingxu Fine Chemicals Circular Industry Park in Shanxi Province entered a stable operation phase, becoming the first in the national coking industry to achieve such zero discharge. In October 2021, the **Central Committee and the State Council issued the \"Opinions on Fully, Accurately, and Comprehensively Implementing the New Development Concept to Advance Work on Reaching Carbon Peaks and Carbon Neutrality.\" As an important link in the coal industry chain, how can the coking industry improve the resource utilization rate and reduce its impact on the environment? Reaching carbon peak and carbon neutrality is a challenge that all enterprises in the industry must overcome. Led by Shanxi Meijin Huasheng Chemical New Materials Co., Ltd., Shanxi Xiaxin New Energy Technology Co., Ltd., and Shanxi Gengyang New Energy Co., Ltd., the Qingxu Fine Chemicals Circular Industry Park has taken the lead in exploring a path of energy conservation, carbon reduction, and green development; a Qingxu Hongbo wastewater treatment plant has been built as part of the infrastructure in this park. The design total treatment capacity of the Qingxu Hongbo wastewater treatment project is 30,000 m3/day, with the designed treatment capacities for Phase I and Phase II being 15,000 m3/day each. Recently, the crystallization and salt separation of coking wastewater has entered a stable operation phase. From the outset of its design, the project was guided by the mission of \"taking coking wastewater treatment to its fullest extent and turning environmental protection into a source of productivity.\" It implements the strategic plans for the development and layout of the environmental protection industry, and is designed and constructed in accordance with the principles of \"high-end, intelligent, green, and integrated\" development, as well as operational standards that emphasize \"first-class equipment, first-class environmental protection practices, and first-class energy efficiency.\" The total design treatment capacity of the project is 30,000 m3/d, and the main treatment process consists of a combination of pre-treatment + biochemical treatment + advanced treatment + reclaimed water treatment (membrane pre-treatment + membrane treatment) + evaporation for salt recovery. The successful implementation of this project marks a true achievement of zero discharge of coking wastewater in the coking industry; it enables resource recycling and sustainable economic development, while also paving the way for energy savings, carbon reduction, and green development in pursuit of carbon peak and carbon neutrality goals.