沿海火电厂水岛设计及要点分析

火电厂水处理系统采用水岛的建设模式，在更好实现水梯级使用的同时能节省较多的占地面积和设备投资。对于部分以海水淡化系统产水作为全厂工业用水的沿海火电厂来讲，采用水岛的建设模式意义更大。为此，以某沿海火电厂为例，对该类型火电厂水处理系统采用水岛方式设计的思路加以介绍，在占地面积和经济效益方面与分散布置方式进行对比分析，并给出水岛系统设计的注意要点。分析表明，沿海火电厂水岛集中布置比常规分散布置节约20%的占地面积，且可节省大量的公用设备/设施，在提高水务监管水平的同时，可做到减员增效，经济和环保效益显著。

Design and Analysis of Water Island in Coastal Thermal Power Plant

Thermal power plant water treatment system using the water island construction mode in the water is capable of taking better advantage of the cascading water usage while saving more occupied area and equipment investment. For some coastal thermal power plants that rely on seawater desalination as the industrial water for the whole plant, it is of greater significance to apply the construction mode of the water island. Take a coastal thermal power plant as an example, this paper introduces the idea of water island system design for this type of thermal power plant water treatment system, analyzes the layout and decentralized arrangement in terms of area and economic benefits, then points out the items that more attention needs to be given in the design of water island system. The analysis shows that the centralized deployment of water islands in coastal thermal power plants occupies 20% of the floor area less than conventional decentralized arrangements, and it can also save the investment on a large amount of public facilities. Therefore the target to downsize staff and improve economic efficiency is reached while the level of water regulation is enhanced with significant economic and environmental benefits.