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| 制浆造纸废水处理及中水回用工程实例 |
| Practical Case of Wastewater Treatment and Recycling of a Paper Mill |
| 收稿日期：2019-07-26 |
| DOI：10.11980/j.issn.0254-508X.2019.12.013 |
| 关键词: 制浆造纸 废水处理 中水回用 |
| Key Words:pulping and paper wastewater treatment reuse of reclaimed water |
| 基金项目: |
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| 摘要:国内某新建造纸企业配套废水处理站设计规模60000 m3/d，废水处理采用预处理+好氧生物处理+混凝沉淀+Fenton氧化处理工艺，出水CODCr≤50 mg/L，SS≤13 mg/L，直接进入后续中水回用单元；中水回用单元采用预处理+超滤反渗透工艺进行处理，反渗透出水CODCr≤10 mg/L，TDS≤180 mg/L，系统中水回收率70%，脱盐率97%。回用水送至厂区原水池，为企业新增用水源1512万m3/a，约占企业总用水量的50%，极大地缓解了企业用水压力。 |
| Abstract:The scale of wastewater treatment station in the paper mill was 60000 m3/d. The wastewater treatment adopted the process of pretreatment + aerobic biological treatment + coagulation sedimentation + Fenton oxidation，and the effluent (CODCr≤50 mg/L and SS≤13 mg/L) was subsequently treated by the process of pretreatment + ultrafiltration reverse osmosis process in order to implement recycling. The CODCr of produced water from reverse osmosis was less than 10 mg/L and TDS was less than 180 mg/L. The system recovery rate was 70% and the desalination rate was 97%. The recycled water was sent to the original water pool of the plant, which provided 15.12 million m3 of water per year to the enterprise, accounting for about 50% of the total water consumption of the enterprise, greatly alleviating the pressure of the enterprise's water supply. |
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