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| Practical Case of Wastewater Treatment and Recycling of a Paper Mill |
| Received:July 26, 2019 |
| DOI：10.11980/j.issn.0254-508X.2019.12.013 |
| Key Words:pulping and paper wastewater treatment reuse of reclaimed water |
| Author Name | Affiliation | Postcode | | DING Shaofeng | Beijing Guodian Futong Science and Technology Development Co., Ltd.， Beijing, 100070
Nanri Group Corporation/State Grid Electric Power Research Institute， Nanjing, Jiangsu Province, 210003 | 210003 | | ZHANG Meng | Beijing Guodian Futong Science and Technology Development Co., Ltd.， Beijing, 100070
Nanri Group Corporation/State Grid Electric Power Research Institute， Nanjing, Jiangsu Province, 210003 | 210003 | | FU Dayong | Beijing Guodian Futong Science and Technology Development Co., Ltd.， Beijing, 100070
Nanri Group Corporation/State Grid Electric Power Research Institute， Nanjing, Jiangsu Province, 210003 | 210003 | | SU Wei | Beijing Guodian Futong Science and Technology Development Co., Ltd.， Beijing, 100070
Nanri Group Corporation/State Grid Electric Power Research Institute， Nanjing, Jiangsu Province, 210003 | 210003 |
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| 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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