A case study has been conducted for the recovery of water from complex wastewater at a soluble coffee manufacturing factory. The study has evaluated separation methods for process intervention based on environmental and economic assessments. A novel vibratory field membrane separation was evaluated at the laboratory scale using actual factory wastewater, and was scaled‐up using appropriate design protocols. The recovery of water from an intermediate waste stream proved the most effective, both environmentally and economically. The proposed full‐scale vibratory membrane process recovers 378,541 L of water per day that meets specifications for reuse in the factory cooling tower. The proposed design reduced the daily well freshwater withdrawn by 21% and the amount of wastewater discharged from the factory by 28.5%. Annual operating costs were reduced by 22.5% and total life cycle emissions were reduced by 27.8%. These reductions are mainly the result of the reduced volume of wastewater discharged from the factory and the reduced energy requirement of the on‐site pretreatment processes. Economic assessment showed a net present value after 10 years is $181,100, while the payback time is under 3 years. Overall, the proposed vibratory membrane process used for water recovery presents favorable economics, and significant environmental emission reduction.

中文翻译：

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用于从可溶性咖啡生产废料中回收水的振动纳滤系统的环境和过程评估

在一家可溶性咖啡制造厂进行了一项从复杂废水中回收水的案例研究。该研究评估了基于环境和经济评估的过程干预分离方法。在实验室规模下，使用实际的工厂废水对新型振动场膜分离进行了评估，并使用适当的设计规程进行了放大。从中间废物流中回收水被证明在环境和经济上都是最有效的。拟议的全尺寸振动膜工艺每天可回收378,541升水，该水符合在工厂冷却塔中重复使用的规格。拟议的设计使每日井的淡水抽取量减少了21％，工厂排放的废水量减少了28.5％。年度运营成本减少了22.5％，总生命周期排放减少了27.8％。这些减少的主要原因是工厂排放的废水量减少以及现场预处理过程的能源需求减少。经济评估显示，十年后的净现值为181,100美元，投资回收期不到3年。总体而言，所提出的用于水回收的振动膜工艺具有良好的经济效益，并显着减少了环境排放。而投资回收期不到3年。总体而言，所提出的用于水回收的振动膜工艺具有良好的经济效益，并显着减少了环境排放。而投资回收期不到3年。总体而言，所提出的用于水回收的振动膜工艺具有良好的经济效益，并显着减少了环境排放。