李鑫^1,,
汪毅^1,,
马颖²,
丁志斌¹,
陈晓¹,
董瑞程¹
1.陆军工程大学国防工程学院，南京 210007
2.91053部队，北京 100070
基金项目: 国家重点研发计划项目2017YFC0506304
军队后勤重点科研项目BY115C002国家重点研发计划项目(2017YFC0506304)
军队后勤重点科研项目(BY115C002)

Change regularity and disinfection strategy of storage water quality based on biological stability

LI Xin^1,,
WANG Yi^1,,
MA Ying²,
DING Zhibin¹,
CHEN Xiao¹,
DONG Ruicheng¹
1.College of Defense Engineering, Army Engineering University of PLA, Nanjing 210007, China
2.1053 Troops, Beijing 100070, China

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摘要:通过对贮存水中可同化有机碳(AOC)、微生物再生长潜能(BRP)及细菌总数(HPC)等微生物指标变化规律的了解，探究饮用水贮存过程中细菌二次生长、生物稳定性下降等问题。结果表明：在贮存过程中，HPC呈现先上升后下降的趋势；而AOC及BRP则在贮存初期(2 d内)出现上升，后基本保持稳定。通过向贮存水中投加不同浓度的氯或氯胺，研究了不同种类、不同浓度的消毒剂对贮存水HPC的影响及其衰减速率的变化规律。结果表明：随着氯或氯胺初始投加量的增加，HPC开始增加及达到峰值所需时间延长，且HPC峰值下降；当氯或氯胺初始投加量达到1.0 mg·L-1以上，贮存水中氯残留量>0.05 mg·L-1或氯胺残留量>0.5 mg·L-1时，即可保证贮存过程HPC-1。与氯消毒相比，氯胺消毒剂的衰减速率更为缓慢，可长期维持贮存水中较高的消毒剂残留，进而控制贮存水中HPC处于相对较低的范围，更有利于保证贮存水生物的稳定性。
关键词: 贮存水水质变化规律/
可同化有机碳/
微生物生长潜力/
消毒剂残留/
消毒剂投放策略

Abstract:In this study, the change regulations of microbial indicators such as assimilable organic carbon (AOC), bacterial regrowth potential (BRP) and heterotrophic plate count (HPC) in storage water were determined, and the problems of bacteria secondary growth and biological stability decrease were investigated. The results showed that during the storage process, HPC presented an initial increase and then decrease trend, while AOC and BRP increased during the initial stages of storage (within 2 days), and maintained stable afterwards. Through dosing chlorine or chloramine with different concentrations to the storage water, the effects of different disinfectant types and concentrations on HPC and its decay rate were studied. The results showed that with the increase of the initial dosage of chlorine or chloramine, the time for initial increase and approaching peak value of HPC was prolonged, while the HPC peak value decreased. When the initial dosage of chlorine or chloramine was no less than 1.0 mg·L-1, then the residual contents of chlorine or chloramine in the storage water remained greater than 0.05 mg·L-1 or 0.5 mg·L-1, respectively, HPC could maintain less than 100 CFU·mL-1 during storage process. Compared with chlorine disinfection, the chloramine disinfectant demonstrated a slower decay rate and maintained a higher disinfectant residue in the storage water for a long time, which could control HPC in a relatively low range and ensure the biological stability of storage water.
Key words:change regularity of storage water quality/
assimilable organic carbon/
bacterial regrowth potential/
residual of disinfectant/
disinfectant addition strategy.

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刊出日期:2019-03-14

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基于生物稳定性的贮存水水质变化规律及消毒策略

李鑫^1,,
汪毅^1,,
马颖²,
丁志斌¹,
陈晓¹,
董瑞程¹
1.陆军工程大学国防工程学院，南京 210007
2.91053部队，北京 100070
基金项目: 国家重点研发计划项目2017YFC0506304 军队后勤重点科研项目BY115C002国家重点研发计划项目(2017YFC0506304) 军队后勤重点科研项目(BY115C002)
关键词: 贮存水水质变化规律/
可同化有机碳/
微生物生长潜力/
消毒剂残留/
消毒剂投放策略
摘要:通过对贮存水中可同化有机碳(AOC)、微生物再生长潜能(BRP)及细菌总数(HPC)等微生物指标变化规律的了解，探究饮用水贮存过程中细菌二次生长、生物稳定性下降等问题。结果表明：在贮存过程中，HPC呈现先上升后下降的趋势；而AOC及BRP则在贮存初期(2 d内)出现上升，后基本保持稳定。通过向贮存水中投加不同浓度的氯或氯胺，研究了不同种类、不同浓度的消毒剂对贮存水HPC的影响及其衰减速率的变化规律。结果表明：随着氯或氯胺初始投加量的增加，HPC开始增加及达到峰值所需时间延长，且HPC峰值下降；当氯或氯胺初始投加量达到1.0 mg·L-1以上，贮存水中氯残留量>0.05 mg·L-1或氯胺残留量>0.5 mg·L-1时，即可保证贮存过程HPC-1。与氯消毒相比，氯胺消毒剂的衰减速率更为缓慢，可长期维持贮存水中较高的消毒剂残留，进而控制贮存水中HPC处于相对较低的范围，更有利于保证贮存水生物的稳定性。

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