加氯水体有机浓集物对团头鲂血液指标的影响

本文对团头鲂２项血液学指标（红细胞数ＲＢＣ和血红蛋白量Ｈｂ）的正常值进行了研究,同时检测了加氯水体中有机浓集物对这２项指标的影响。结果表明,团头鲂血液中ＲＢＣ和Ｈｂ的正常值受生长和水温等因素影响;在相同的试验条件下,加氯水体中的有机浓集物对团头鲂血液ＲＢＣ和Ｈｂ有抑制作用,抑制率分别为４．３％～２６．０％和５．０％～２２．５％,表明此类物质对鱼类正常的生长代谢有一定的危害。     

臭氧化消毒技术在海水消毒中的应用

本文从理论出发，通过大量的小型模拟实验，确立了海水流量、臭氧投加量、消毒时间三者的关系，从而制定了利用臭氧进行海水消毒净化工程的工艺流程。又经过实际工程的验证，其工艺流程是可行的，结果优于设计要求，从而创立了国内第一家利用臭氧进行海水消毒净化的优质工程，为沿海城镇以海水替代淡水提供了一个新的途径。     

Research on Relationship Between Fluorine in Tap Water and That in Urine of Chinese Residents

In this study, the relationship between fluorine in drinking water and that in urine of urban residents in China is assessed. Fluorine concentrations in tap water and those in urine show a good correlation with a linear regression coefficient of 0. 9798, indicating that the fluorine concentrations in big cities under investigation are extremely low, and the main source of fluorine is tap water. The weather effect on the intake amount of fluorine is also discussed. When air temperature is above 15℃, people would intake more fluorine through drinking water with the rise of air temperature. When temperature is below 15℃, no remarkable relationship is observed between air temperature and the intake amount of fluorine. This phenomenon indicates that the main source of fluorine in China is tap water instead of foodstuff.     

Impact of suspended particles and enhancement techniques on ultraviolet disinfection of a secondary effluent

The concentration of suspended solids in the secondary effluent often varies widely, leading to frequent adjustment of the UV dosage to meet the disinfection criterion. In addition, a desired disinfection rate is difficult to achieve sometimes. The authors studied the particle size distribution, contribution of particle-associated Fecal Coliform （F. C. ）, and their influences on UV disinfection. A combined disinfection process （chlorination with a subsequent UV disinfection） was tested to improve the disinfection effect. The results indicated that the content of suspended solids, especially that of large particles, has a strong impact on UV disinfection efficiency; D〉 10 μm particles associated F.C. are difficult to be disinfected and are the main part of the tailings of F.C. inactivation curves. Pre-chlorination could decrease the number of particles in the secondary effluent and transform the large particles into small ones, reducing the influence of particles on UV disinfection and enhancing the resistance ability of the combined process to particle loading.     

Influence factors of phosphorus variation regularity in sediment-water system

Knowledge of phosphorus （P） variation regularity of sediment-water system has important influence on water pollution. Thus P variation regularity of top-sediment affected by some factors such as type of sediment （sandy and silty）, background value of sediment, P concentration of overlaying water, inhibiter, disinfection, was investigated. The results stated that, （1） P in the sandy sediment occurred mainly in the form of insoluble P. Silty sediment with a low background level has higher dissoluble total phosphorus （DTP） content than silty sediment with a high background level. （2） Low-P primary liquid has low TP and DTP contents, TP in the overlying water was rich in DTP. While TP in overlying water of high P primary liquid was rich in insoluble total phosphorus （ITP）. Overlying water of adding inhibitor set has high TP, dominated by ITP. TP in overlying water of no inhibitor set was dominated by DTP. Adding inhibitor set has obviously high pH value and tallish DO concentration in overlying water than in no inhibitor set. Disinfection set has high Pcontent in overlying water, DTP content is high. DO and ORP in overlying water of non-disinfection set were obviously higher than in that disinfection set.     

锋勾针排脓放血结合中药内服治疗重度痤疮45例总结

目的：观察锋勾针排脓放血结合中药内服治疗重度痤疮的临床疗效。方法：将90 例重度痤疮患者随机分为治疗组和对照组,每组各45 例。对照组采用五味消毒饮合仙方活命饮加减方治疗,治疗组在对照组基础上加用锋勾针排脓放血治疗,2组疗程均为6周,观察2组治疗前后粉刺、丘疹、脓疱、囊肿、结节各类型皮损的数量变化,并比较2组临床疗效及不良反应发生情况。结果：总有效率治疗组为100.00%（45/45）,对照组为68.89%（31/45）,2组比较,差异有统计学意义（P<0.01）;治疗组治疗前后各类型皮损数量组内比较,差异有统计学意义（P＜0.01）;对照组治疗前后粉刺、丘疹、脓疱、囊肿数量组内比较,差异有统计学意义（P＜0.01或P＜0.05）;2组各类型皮损数量治疗后组间比较,差异均有统计学意义（P<0.01）。2组均未出现明显不良反应,治疗组锋勾针治疗过程中,患者面部出现持续红晕、轻度灼热及疼痛,经休息后在24 h之内消失。结论：锋勾针排脓放血结合中药内服治疗重度痤疮的临床效果明显,对粉刺、丘疹、脓疱、囊肿及结节各类型痤疮皮损修复能力显著。