建筑与小区管道直饮水系统技术规程 [附条文说明] CJJ/T110-2017azqpliiyncasdjsxocmrniiimggusdqdvzzghuvw
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5.0.13 不循环的支管长度不宜大于6m。utvnvcvsooxweqjjtshhqtuio
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条文说明:eycrzqvmijh
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5.0.13 支管过长,易形成滞水。管道过长可考虑在支管上安装带止水器的直饮水水表。采用臭氧等会产生浓度扩散的消毒方式时,可延长支管长度。根据上海管道纯净水股份有限公司所做实验,支管长度在15m时,其水质在2d内不变质。本次修订通过深圳深水海纳水务集团有限公司所做实验,并结合工程实际,将支管长度不宜大于3m改为6m,可保证水质在2d内菌落总数及总有机碳(TOC)指标不明显升高,当用户长期未用水时,建议提醒用户使用前应采取放水措施。xaxlyzjntsfvelzmoqqnetyklpuenplkzek
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