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在热机械纸厂的废水再利用中,Aspen Plus模拟

Daiane Cristina Diniz Caldeira¹, Cláudio Mudadu Silva², Fábio de Ávila Rodrigues³

¹Departamento de Engenharia Civil and Departamento de Engenharia Florestal, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil

Water science and technology : a journal of the International Association on Water Pollution Research

|August 14, 2023

概括

这项研究表明,在机械纸 (TMP) 生产中再利用经过处理的废水不会损害纸质量. 模拟显示,废水再利用可以显著减少磨坊的淡水消耗.

科学领域:

化学工程是化学工程的重要组成部分.
环境科学环境科学
纸和纸张技术纸和纸张技术

背景情况:

纸和造纸厂消耗大量的淡水.
废水处理和废水再利用对于可持续的工业运作至关重要.
在纸生产中关闭水路可以减少环境影响和运营成本.

研究的目的:

评估在热机械纸 (TMP) 生产中关闭水循环的可行性.
评估再利用经过处理的废水对TMP质量和工艺要素的影响.
为了确定TMP制造中的井水处理废水替代的最佳比例.

主要方法:

模拟使用Aspen Plus®来模拟处理废水再利用的TMP生产.
动态模拟分析不同重复使用百分比 (50%,75%,100%) 的非工艺元素 (NPE) 积累.
实验室漂白试验以评估最终的纸亮度和亮度逆转.

主要成果:

模拟显示了可以控制的,铁和铜度,废水再利用率高达100%.
在所有测试的废水再利用场景中,纸的亮度和亮度逆转仍然与淡水使用相当.
在处理后的废水整合过程中,没有观察到对最终纸质量的显著负面影响.

结论:

在不影响产品质量的情况下,在TMP生产中可以有效地重复使用经过处理的废水.
通过废水再利用关闭水循环,为减少纸厂的水消耗提供了一个可行的策略.
该研究支持在纸和造纸行业实施水回收的环境和经济效益.

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