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| Optimization and Improvement of Stability on the Papermaking Wastewater Reuse System |
| Received:October 08, 2021 |
| DOI：10.11980/j.issn.0254-508X.2022.01.018 |
| Key Words:papermaking wastewater double-membrane reuse improvement |
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| Abstract:The second-phase reclaimed water reuse system of the enterprise was improved. The original biochemical treatment system （A/O） was transformed to two-stage treatment to reduce the concentration of pollutants in the biochemical effluent and stabilize the CODCr of effluent at about 100 mg/L. The waste water from original low-concentration direct-draining pipe network was reused， which was used as one of the influent water sources of the second-stage ultrafiltration system after A/O treatment for twice. The original Fenton process in the first phase and the pretreatment of reclaimed water in the second phase were improved to the activated carbon powder adsorption process. The results showed that the equipment investment cost of optimization of the first phase system and new construction of the second phase system was about ¥12.2 million， civil construction cost of which was about ¥9.07 million， and the actual operating cost （excluding labor costs） of which was about ¥2.45/t. |
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