Seawater desalination based on humidification-dehumidification (HDH) process is a competitive method to obtain fresh water from sea and brackish water that can be naturally coupled with renewable energy. Compared with the traditional seawater desalination technologies, such as reverse osmosis (RO), multi-stage flash (MSF), low-temperature multi-effect distillation (LT-MED) and mechanical vapor compression (MVC), HDH process shows the benefits of simpler configuration, relatively lower working temperature, milder evaporation, easier control and atmospheric operation. This paper presents an elaborate review on the progress of HDH desalination technology. From an implemented perspective, prompting the HDH desalination system produce fresh water efficiently, stably and continuously is a major concern. Efforts to improve the system performance and stability as well as reducing the energy consumption are reviewed and evaluated on the basis of the introduced system configurations and state variations of process air during HDH process. The paper also provides an overview on the concerned issues, which indicate that new types of humidifying and dehumidifying process to improve the heat recovery efficiency and thermally balanced cycles are the methods with great potential for system performance improvement. Furthermore, some possibilities for further improving HDH desalination system, to promote the development of this technology are also proposed and discussed.

基于加湿-除湿（HDH）工艺的海水淡化是一种从海水和微咸水中获取淡水的竞争方法，可以自然地与可再生能源耦合。与反渗透（RO）、多级闪蒸（MSF）、低温多效蒸馏（LT-MED）和机械蒸汽压缩（MVC）等传统海水淡化技术相比，HDH工艺显示出配置更简单，工作温度相对较低，蒸发更温和，更易于控制和常压操作。本文对HDH海水淡化技术的进展进行了详细的回顾。从实施的角度来看，促使HDH海水淡化系统高效、稳定、持续地生产淡水是一个主要问题。根据介绍的系统配置和HDH工艺过程中工艺空气的状态变化，对提高系统性能和稳定性以及降低能耗的努力进行了审查和评估。本文还对相关问题进行了概述，表明新型加湿和除湿工艺以提高热回收效率和热平衡循环是系统性能提升潜力巨大的方法。此外，还提出并讨论了进一步改进HDH海水淡化系统以促进该技术发展的一些可能性。本文还对相关问题进行了概述，表明新型加湿和除湿工艺以提高热回收效率和热平衡循环是系统性能提升潜力巨大的方法。此外，还提出并讨论了进一步改进HDH海水淡化系统以促进该技术发展的一些可能性。本文还对相关问题进行了概述，表明新型加湿和除湿工艺以提高热回收效率和热平衡循环是系统性能提升潜力巨大的方法。此外，还提出并讨论了进一步改进HDH海水淡化系统以促进该技术发展的一些可能性。