摘要
[目的]研究不同储存条件下再生水水质的变化。[方法]以现行再生水水质标准为参考,以内蒙古师范大学污水处理厂再生水为研究对象,以自来水做对照,对储存于塑料桶、铁桶、水泥蓄水池这3种不同储水设施中的再生水的CODCr、NH3-N、TP、硬度、温度等物理、化学指标进行动态分析。[结果]再生水在3种储水器中存放时,各指标随时间的变化情况因储水器类型和本底水质的不同有一定差异,不同储水设施对再生水的CODCr、TP、硬度、温度这4项指标变化影响显著,而对NH3-N的影响不显著。再生水的CODCr值在水泥池中较稳定,而在塑料桶中变化较大。塑料桶储水器有利于降低再生水的TP和硬度。由于微生物和藻类的代谢,水中NH3-N和TP的变化趋势较为一致。水样的水温和TP、NH3-N;TP和NH3-N、硬度;NH3-N和硬度具有较强的相关性。[结论]不同类型储水器对水质变化影响情况不同,应做更系统的研究。
[Objective]The research aimed to study water quality change of reclaimed water under different storage conditions.[Method]Taking the current recycled water quality standards as reference,reclaimed water in sewage treatment plant of Inner Mongolia Normal University as the research object,and tap water as control,dynamic analyses on physical and chemical indexes of the reclaimed water which was stored in plastic barrel,metal pail and cement reservoir were conducted. These indicators included CODCr,NH3-N,TP,hardness and temperature. [Result]When reclaimed water was stored in three water reservoirs,change of each index with time had certain difference due to the various water reservoir types and the background water quality. Different water storage facilities had significant influences for CODCr,TP,hardness and temperature changes of reclaimed water,but the impact was not significant for NH3-N. The CODCrvalue of recycled water was more stable in concrete pond,while largely changed in the plastic bucket. Plastic bucket water reservoir was beneficial to reduce TP and hardness of reclaimed water. Since the metabolism of microorganism and algae,the change trends of NH3-N and TP in water were consistent. The correlations of water sample temperature TP,water temperature NH3-N,TP NH3-N,TP hardness,NH3-N hardness were very strong.[Conclusion]In short,different types of water storage devices had different impacts on water quality changes. We should do more systematic study.
出处
《安徽农业科学》
CAS
2015年第4期258-262,308,共6页
Journal of Anhui Agricultural Sciences
基金
国家自然科学基金项目(51269018)
内蒙古自治区科技计划项目(20110524)
内蒙古自治区高等学校科学研究项目(NJZY13051)
关键词
再生水
储存条件
水质变化
Reclaimed water
Storage condition
Water quality change
