曝光台

无环保审批手续污染环境 关闭!;杨贾村6家小造纸厂污染 拆除!;科森电器噪声、粉尘污染环境 停工!;十几家炼油厂污染大气 取缔!     

造纸烘缸爆炸事故的技术分析

2008年初．某市一造纸厂造纸车间发生爆炸事故,无人员伤亡,但停产一个月,经济损失近三十万元,缸体从齿轮传动左侧周向断裂,炸成两段,大端落在机位左侧3米处,小端落在机位右侧2米处,造纸机架被炸塌。     

黑液木质素的提取及其工业利用

1986年，我们在已有的研究结果基础上．提出了通过木质索工业利用的途径来治理造纸厂蒸煮黑液的技术路线，提出这一技术路线的基本考虑是：     

A comparative study of biopolymers and alum in the separation and recovery of pulp fibres from paper mill effluent by flocculation

Recovery of cellulose fibres from paper mill effluent has been studied using common polysacchatides or biopolymers such as Guar gum, Xanthan gum and Locust bean gum as flocculent. Guar gum is commonly used in sizing paper and routinely used in paper making. The results have been compared with the performance of alum, which is a common coagulant and a key ingredient of the paper industry. Guar gum recovered about 3.86 mg/L of fibre and was most effective among the biopolyrners. Settling velocity distribution curves demonstrated that Guar gum was able to settle the fibres faster than the other biopolymers; however, alum displayed the highest particle removal rate than all the biopolymers at any of the settling velocities. Alum, Guar gum, Xanthan gum and Locust bean gum removed 97.46%, 94.68%, 92.39% and 92.46% turbidity of raw effluent at a settling velocity of 0.5 cm/min, respectively. The conditions for obtaining the lowest sludge volume index such as pH, dose and mixing speed were optimised for guar gum which was the most effective among the biopolymers. Response surface methodology was used to design all experiments, and an optimum operational setting was proposed. The test results indicate similar performance of alum and Guar gum in terms of fioc settling velocities and sludge volume index. Since Guar gum is a plant derived natural substance, it is environmentally benign and offers a green treatment option to the paper mills for pulp recycling.     

晨鸣鼎力打造绿色纸业

日前，集制浆造纸于一体的大型企业集团——山东晨鸣纸业集团又一投资5300万元的年产10万吨有机肥项目投产，日消化污泥600立方米，木屑200立方米，这一工艺将全部消化造纸中段水所生产的污泥，解决我国造纸厂难以解决的污泥处置问题。     

造纸厂黑液用于沥青乳化剂的开发与应用

利用黑液中木质素生产沥青乳化剂始于美国，发表的资料也较多。我国对沥青乳化剂的研究较世界先进国家晚了约30年，70年代末开始起步，1985年以后才推广并逐渐为用户接受。