4暖通与空调制冷水处理的有关设计规范4.1应严格执行水处理的三个技术法规国家技术监督局发布的2001年版中华人民共和国国家标准“工业锅炉水质”（gb1576-2001）、1995年版中华人民共和国国家标准“工业循环冷却水处理设计规范”（gb50050-95）及“工业循环水冷却设计规范”（gb/t50102-2003），是本行业水处理的技术法规，应当认真贯彻执行。4.2新标准放宽了给水硬度指标新标准“工业锅炉水质”（gb1576-2001）中,对热水锅炉给水采用化学药剂处理水的工艺放宽了给水的硬度。原标准gb1576-1991中规定给水硬度≤4mmol/l，新标准gb1576-2001中规定给水硬度≤6mmol/l。

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而我国大部分地区的自来水的硬度均为6mmol/l左右(天津滦河水的硬度约3.4 mmol/l,ph=7，溶解氧10mg/l)。这对以水为载体的供暖、空调制冷循环水系统，为采用化学药剂水处理方法创造了十分有利的条件。也就是说，中国大部分地区的热水供暖系统、空调冷热水系统完全可以采用化学药剂处理水。因为这样就可减少以去除水的硬度为主要目的而采取钠离子交换方法，致使每年产生大量的、数以万吨的废盐液污染地下水的问题。5暖通与空调制冷水处理设计要点5.1收集有关水质资料在进行水处理设计时,应首先收集系统用水的水质资料,如：硬度、ph值、溶解氧、氯离子浓度、溶解固形物（或含盐量）、悬浮物等。以便为工程设计中设法解决循环水系统普遍存在的腐蚀或结垢现象提供基础数据。

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