Waste generated during regeneration of Ion Exchanger (IX), used for deionizing water, needs to be neutralized before it can be discharged back to a clean water source. An efficient and novel process is disclosed that minimizes the neutralization volume and chemicals required for pH adjustment. The currently employed neutralization setups in the industry are environmentally unsustainable. Various neutralization setups were studied for treating waste generated from IX regeneration. From the collected plant data, the treatment requirements of waste streams generated during regeneration of IX beds were analyzed. An efficient neutralization setup was developed to lower the operating and capital costs by eliminating the need of some equipment and by lowering the neutralization volume. The new process results in considerable savings compared to currently used processes in the industry and is environmentally benign. The improved neutralization setup proposed in this work has achieved a 63% reduction in volume of IX regeneration waste stream; a 62% reduction in the capital cost; 23% reduction in chemical usage; and a 55% reduction in operating cost. The achieved improvements are quite significant, which are bound to immensely benefit the chemical industries that require demineralized water for their operation.

中文翻译：

---

为扩建化学制造设施而强化离子交换再生产生的废物中和过程

用于去离子水的离子交换器 (IX) 再生过程中产生的废物需要中和，然后才能排放回清洁水源。公开了一种有效且新颖的方法，该方法使pH调节所需的中和体积和化学品最小化。该行业目前采用的中和装置在环境上是不可持续的。研究了用于处理 IX 再生产生的废物的各种中和设置。根据收集的工厂数据，分析了 IX 床再生过程中产生的废物流的处理要求。开发了一种有效的中和装置，通过消除对某些设备的需求和降低中和量来降低运营和资本成本。与业内目前使用的工艺相比，新工艺可节省大量成本，并且对环境无害。在这项工作中提出的改进的中和装置使 IX 再生废物流的体积减少了 63%；资本成本降低 62%；化学品使用量减少 23%；运营成本降低 55%。所实现的改进非常显着，这必将极大地有益于需要软化水进行操作的化学工业。