Brine recovery at industrial RO plants: Conceptual process design studies
Brine recovery at industrial RO plants: Conceptual process design studies
复制标题
工业反渗透工厂的盐水回收：概念工艺设计研究
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Rajindar Singh
中科院分区：
文献类型：
--
作者：
Rajindar Singh
用于微咸水（总溶解固体（TDS）1/4 500- 10，000 ppm）脱盐和工业用水（TDS 1/4 100-500 ppm）净化的反渗透（RO）和纳滤（NF）膜设备产生大量的浓缩盐水，这是一个处置问题，特别是当设备位于内陆时。越来越多的工厂需要产生最小的液体排放，以便从当地政府获得工厂运营许可证。由于处理盐水的高成本以及回收和保存水的需要，有时用盐水RO（BRO）系统对初级RO（PRO）废水进行抛光，以回收额外的饮用水并减少盐水流的体积。这样的PRO CARBRO混合系统可以实现高达90%的总产品水回收率（OPWR）。然而，OPWR ≥ 95%是必需的。几个替代NF和RO工艺流程设计开发使用膜制造商的性能预测软件部署从工业PRO拒绝数据。
Reverse osmosis (RO) and nanofiltration (NF) membrane plants used for brackish water (total dissolved solids (TDS) ¼ 500–10,000 ppm) desalination and industrial water (TDS ¼ 100–500 ppm) purification generate large quantities of concentrated brine that is a disposal problem, especially, when the plants are located inland. Increasingly, industrial plants are required to generate minimal liquid discharge in order to obtain plant operating licenses from their local governments. Because of high costs of disposing brine, and the need to reclaim and conserve water, primary RO (PRO) reject water is sometimes polished with a brine RO (BRO) system to recover additional potable water and reduce the volume of brine stream. Such PRO þ BRO hybrid systems can achieve overall product water recoveries (OPWR) of up to 90%. However, OPWR ≥ 95% are required. Several alternate NF and RO process flow designs were developed using membrane manufacturers’ performance projections software deploying reject data from industrial PRO...