Background: In the present situation where there is a water shortage globally, nanoparticles can play a vital role in treating wastewater to make it usable for several processes. Industrial wastewater contains numerous heavy metals and associated wastes that enter our food chain by one means or other. This article provides a review of applications of nanoparticles in wastewater treatment and highlights the significance of photocatalytic nanoparticles in general.

Methods: Online journals and books related to wastewater treatment using nanoparticles are reviewed to compile their essentials findings. General mechanisms, applications, limitations, and comparison of photocatalytic nanoparticles are reviewed as well.

中文翻译：

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纳米粒子及其在废水处理中的光催化意义：综述

背景：在目前全球缺水的情况下，纳米颗粒可以在废水处理中发挥至关重要的作用，使其可用于多种工艺。工业废水包含大量的重金属和相关废物，这些废物通过一种或其他方式进入我们的食物链。本文概述了纳米颗粒在废水处理中的应用，并着重强调了光催化纳米颗粒的一般意义。

方法：审查有关使用纳米颗粒处理废水的在线期刊和书籍，以汇编其基本发现。还综述了光催化纳米颗粒的一般机理，应用，局限性和比较。