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| Study on Aerobic Biodegradation and Drying Treatment of Papermaking Sludge |
| Received:January 17, 2023 |
| DOI：10.11980/j.issn.0254-508X.2023.09.018 |
| Key Words:papermaking sludge aerobic biodegradation drying resource |
| Fund Project:河南省重大科技专项（181100310100）；河南省科学院重大科研项目聚焦项目（220103003）；河南省科学院科技开放合作项目（220903006）。 |
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| Abstract:With the development of the papermaking industry and national increasingly strict requirements for the treatment of the “three wastes”， the disposal of papermaking sludge has become an important issue restricting the clean production and sustainable development of the papermaking industry. In this study， aerobic biodegradation drying process was adopted to reduce and harmlessly treat papermaking sludge. After continuous operation， the results showed that when the bacterial bed temperature was 60~80 ℃ with water content of 24%~40%， the treated sludge with water content of 20%~30% and particle size ≤ 5 mm， was in the form of fine sand particles. After 6 cycles of continuous operation， the sludge reduction rate was 76.4%， fecal coli was negative， and Ascaris lumbricoides eggs were not detected. The sludge treatment of aerobic biodegradation and drying process did not need auxiliary heat， the effect was stable， the treatment cost was low （equivalent sludge treatment cost ￥166.83 /t）， the sludge reduction effect was good， the disposal product was easy to resource utilization， which met the requirements of papermaking enterprises for papermaking sludge disposal. |
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