Santos Paula G, Scherer Cíntia M, Fisch Adriano G, Rodrigues Marco Antônio S
Graduation Program in Environmental Quality, Universidade Feevale, Novo Hamburgo 93525-075, Brazil.
Chemical Engineering Department, Universidade Feevale, Novo Hamburgo 93525-075, Brazil.
Membranes (Basel). 2021 Dec 3;11(12):958. doi: 10.3390/membranes11120958.
In the research reported in this paper, membrane distillation was employed to recover water from a concentrated saline petrochemical effluent. According to the results, the use of membrane distillation is technically feasible when pre-treatments are employed to mitigate fouling. A mathematical model was used to evaluate the fouling mechanism, showing that the deposition of particulate and precipitated material occurred in all tests; however, the fouling dynamic depends on the pre-treatment employed (filtration, or filtration associated with a pH adjustment). The deposit layer formed by particles is not cohesive, allowing its entrainment to the bulk flow. The precipitate fouling showed a minimal tendency to entrainment. Also, precipitate fouling served as a coupling agent among adjacent particles, increasing the fouling layer cohesion.
在本文报道的研究中，采用膜蒸馏从浓缩的石化含盐废水中回收水。结果表明，当采用预处理来减轻结垢时，膜蒸馏的应用在技术上是可行的。使用数学模型评估结垢机制，结果表明在所有测试中均发生了颗粒和沉淀物质的沉积；然而，结垢动态取决于所采用的预处理（过滤，或与pH调节相关的过滤）。由颗粒形成的沉积层没有粘性，使得其能够被夹带至主流体中。沉淀结垢显示出最小的被夹带趋势。此外，沉淀结垢充当相邻颗粒之间的耦合剂，增加了结垢层的凝聚力。
