煤炭工程 ›› 2026, Vol. 58 ›› Issue (5): 35-41.doi: 10.11799/ce202605005

• 设计技术 • 上一篇    下一篇

微介质沉淀耦合陶瓷膜在高浊微污染废水再生利用系统中的研究及应用

包 宇,李一龙   

  1. 1.中煤科工集团北京华宇工程有限公司,北京 100120

    2.中国中元国际工程有限公司,北京 100089

  • 收稿日期:2025-10-15 修回日期:2025-12-02 出版日期:2026-05-15 发布日期:2026-05-27
  • 通讯作者: 包宇 E-mail:241746979@qq.com

Application of micro-media precipitation coupled with ceramic membranes in the recycling system of high-turbidity micro-polluted wastewater #br#

  • Received:2025-10-15 Revised:2025-12-02 Online:2026-05-15 Published:2026-05-27

摘要:

火电及煤炭储配产业在“双碳”目标下面临实现高浊微污染废水近零排放与再生利用的政策要求和技术挑战,本文以江西某煤炭储配发电一体化项目为研究对象,针对现有系统存在的处理效能不足、面源污染管控缺失及分质回用能力欠缺等问题,创新提出并实践“微介质沉淀-陶瓷膜”耦合工艺路线,通过微介质“絮核强化”作用加速胶体脱稳与絮体沉降,结合陶瓷膜错流过滤截留微污染物,构建“粗颗粒快速分离-微污染物精准管控”协同体系。运行结果表明:出水水质全面优于《城市污水再生利用 工业用水水质》(GB/T 19923—2024),SS 稳定低于6mg/L、浊度低于3NTUCOD低于15mg/LSS去除率大于99%、浊度达标率100%COD去除率79%,氨氮、总磷去除率分别约30%96%。系统日均处理水量达设计值91%,陶瓷膜平均通量72L/m2·h),反洗频率延长至5~6h。该工艺实现了高浊度废水近零排放与再生水超量回用,降低新鲜水耗量约600m3/d,吨水直接运行成本约1.04元,预计达产后年节约水费约73.6万元,为煤炭行业废水资源化提供了技术示范,兼具环境效益与经济可行性。

Abstract:

Under the "Dual Carbon" goals, the thermal power and coal storage/distribution industries face stringent policy requirements and technical challenges in achieving near-zero discharge and recycling of high-turbidity micro-polluted wastewater. Focusing on an integrated coal storage and power generation project in Jiangxi, this study addresses the limitations of existing systems—such as inadequate treatment efficiency, insufficient non-point source pollution control, and limited capability for graded water reuse—by proposing and implementing an innovative treatment train combining micro-media precipitation with ceramic membrane filtration. The process leverages the "flocculation nucleus enhancement" effect of micro-media to accelerate colloidal destabilization and floc growth, coupled with cross-flow ceramic membrane filtration for precise removal of micro-pollutants. This establishes a synergistic system capable of "rapid coarse-particle separation and precise micro-pollutant control". Operational results demonstrate that the effluent quality consistently surpasses the standards specified in The Reuse of Urban Recycling Water—Water Quality Standards for Industrial Uses(GB/T 19923-2024): suspended solids (SS) remain below 6 mg/L, turbidity under 3 NTU, and chemical oxygen demand (COD) below 15 mg/L. The system achieves SS and turbidity removal rates exceeding 99% and 100% compliance, respectively, along with 79% COD removal. Ammonia nitrogen and total phosphorus are reduced by approximately 30% and 96%, respectively. With a daily treatment capacity reaching 91% of the design value, the ceramic membranes maintain an average flux of 72 LMH, and the backwash interval is extended to 5–6 hours. This integrated process realizes near-zero liquid discharge and high-efficiency recycling of high-turbidity wastewater, reducing freshwater consumption by approximately 600 m3/day. The direct operating cost is estimated at ¥1.04 per cubic meter of water treated, and projected annual savings in water costs amount to approximately ¥736,000 after full-capacity operation. The study provides a technically robust and economically feasible paradigm for wastewater resource recovery in the coal industry, demonstrating significant environmental and economic benefits.

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