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| Study on Reducing Calcification Risk of Anaerobic Granular Sludge in Waste Water Treatment in a Recycled Papermill |
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| DOI：10.11980/j.issn.0254-508X.2015.02.005 |
| Key Words:waste paper papermaking white water closed circulation granular sludge calcification remove hardness |
| Author Name | Affiliation | | 薛方勤1 | 1.北京国环清华环境工程设计研究院有限公司,北京,100084 | | 孙振亮1,3 | 1.北京国环清华环境工程设计研究院有限公司,北京,100084；3.无锡丰陆环保科技有限公司,江苏无锡,214213 | | 钱明1，4 | 1.北京国环清华环境工程设计研究院有限公司,北京,100084；4.苏州清泽环境技术有限公司,江苏苏州,215131 | | 付宏祥1 | 1.北京国环清华环境工程设计研究院有限公司,北京,100084 | | 赵雪峰1,2 | 1.北京国环清华环境工程设计研究院有限公司,北京,100084；2.清华大学环境学院,北京,100084 |
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| Abstract:A process of primary sedirmentation , anaerobic treatment (IC and UASB), aerobic treatment and chemical coagulation was used for effluent treatment in a recycled paper mill in Jiangsu Province. Water consumption of the mill is below 10t/t product due to its white water is recycling in a rather closure circulation. The high content of calcium from the raw material led to high calcium ion concentration in the waste water. Therefore, the calcification of anaerobic granular sludge was serious in this mill. In this paper, a moderate reduction of hardness method of waste water was adopted to reduce the hazard of calcification of anaerobic granular sludge. Furthermore, the anaerobic process would be operated stably and the cost of replacement of granular sludge would be reduced. |
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