磁性离子交换树脂(如MIEX等)能有效去除大部分溶解性有机物(DOC)及溴离子等,减少消毒副产物(DBPs)的生成,为生产安全优质的饮用水提供新途径。而m-PGMA是一种新型的自主研发的磁性离子交换树脂材料。阐述了m-PGMA的基本特性,并利用烧杯试验,研究了其对原水中痕量有机物的去除效能,并与MIEX进行了对比试验。以原水中卡马西平、磺胺嘧啶、阿特拉津为目标痕量有机物,通过高效液相色谱法等方法进行测定。结果表明:m-PGMA对于磺胺嘧啶有明显的去除效果,在反应时间为60 min,投加量为12 mL/L时,去除率达到83%;其对卡马西平及阿特拉津的去除效果则较为低下,在反应时间为60 min,投加量为12 mL/L时,卡马西平去除率一般只有24%,阿特拉津去除率则一般不超过15%。

Magnetic ion exchange resin (MIEX) can effectively remove most of the dissolved organic matter (DOC) and bromide ions, which is able to reduce disinfection byproducts (DBPs), definitely providing new method for safe and high quality drinking water. The magnetic ion-exchange resin called m-PGMA is an independently developed new resin material. This paper describes the main characteristics of m-PGMA. Moreover, by using beaker experiment, a study of its trace organics removal performance in raw water has been done as well as a comparison with MIEX. In raw water, carbamazepine, sulfadiazine, atrazine were set as target trace organics. A high performance liquid chromatography and other equipment were used to estimate the removal effect. The results showed that, due to m-PGMA nearly 83% of sulfadiazine was removed with a dosage of 12 mL/L at a contact time of 60 min;while removal efficiency of both carbamazepine and atrazine were relatively low. At a contact time of 60 min, with a dosage of

采用UV／CIO2工艺对三氯生( TCS)的去除进行了研究,考察了初始pH﹑ CIO2投加量﹑ TCS初始浓度﹑腐殖酸( HA)在UV／CIO2联用工艺中对 TCS 降解的影响.研究表明, UV／CIO2工艺可以有效去除 TCS 且具有协同作用,光强为6.5μW.cm-2﹑CIO2投加量为0.5 mg.L-1和TCS浓度为300μg.L-1时,单独UV和CIO2在1 min内对TCS的去除分别为5.23％和84.93％,UV／CIO2联用工艺TCS在1 min内去除可达到99.13％.实验范围内(pH 6~9)随着pH的增大TCS去除率从99.4％升到99.63％；增大CIO2投加量可以提高TCS的去除,CIO2投加量从0.5~1.5 mg.L-1时TCS去除率由98.1％提高到99.89％；TCS初始浓度与去除率呈负相关,初始浓度从100~500μg.L-1时TCS去除率由99.98％下降到94.39％；低浓度的腐殖酸有利于TCS的去除,高浓度的腐殖酸则相反. GC／MS对TCS的UV﹑ CIO2和UV／CIO2的降解产物分析表明,TCS的主要降解产物包括2,4_二氯苯酚(2,4_DCP)﹑2,7_二氯代二苯并_对_二英(2,7_DCDD)等.

The UV/CIO2 process for tricIosan ( TCS) removaI was studied. The infIuences of severaI factors such as the initiaI pH, dose of CIO2 , initiaI concentration of TCS and humic acid( HA) on TCS degradation in the UV/CIO2 combined process were discussed. The resuIts showed that the UV/CIO2 process couId effectiveIy remove TCS and had a synergistic effect. When the Iight intensity was 6. 5 μW.cm-2 , the dose of CIO2 was 0. 5mg.L-1 and the concentration of TCS was 300 μg.L -1 , when UV and CIO2 were appIied aIone, the TCS removaI rates within 1 min were onIy 5. 23% and 84. 93% respectiveIy. The removaI rate reached up to 99. 13% after 1 min degradation using the UV/CIO2 combined process. In test conditions ( pH 6_9 ) , the removaI rate increased from 99. 4% to 99. 63% with the increase of pH. Increasing dose of CIO2 couId promote TCS removaI. When the dose of CIO2 was 0. 5_1. 5 mg.L-1 , the removaI rate was increased from 98. 1% to 99. 89%. The initiaI concentration of TCS was ne

以生活污水为研究对象,分别对PAC、聚硅酸铝铁、氯化铁、PAM等4种混凝剂的除磷效果进行了实验分析,同时考察了4种混凝剂对氨氮、COD的去除效果。实验表明:当氯化铁投加量为150 mg/L时,对总磷、COD去除效果最佳,4种混凝剂对氨氮去除效果都很差。

With domestic sewage as the research object, experimental analyses on the phosphorus removal effect of PAC, poly aluminum ferric, ferric trichloride, PAM were carried out. Also removal effect of ammonia and COD were analyzed. Experimental results showed that: when the dosage of ferric trichloride was 150 mg/L, the total phosphorus and COD removal efficiency was highest. However, the efficiency of ammonia removal was low.

开展了采用TiO2为光催化剂、紫外灯光源,对焦化废水进行光催化降解的研究,主要探讨了光照反应时间、TiO2投加量、溶液pH值等因素对焦化废水TOC去除率的影响,并对光催化氧化机理进行探讨。结果表明:TiO2光催化氧化对焦化废水TOC去除效果明显,在光照反应时间3.5h,TiO2投加量4.0g/L,溶液pH值为6.3,TOC去除率超过49%。

TiO2 as photocatalyst and UV light source was used to conduct the photocata-lytic degradation for coking wastewater.The effects of irradiation reaction time,TiO2 dosage and initial pH in solution on TOC removal rate of wastewater were investigated, and the mechanism of photocatalyst was also discussed.The results showed that photo-catalytic oxidation process was effective for the TOC removal of coking wastewater,and TOC removal rate could reach more than 49 % under the conditions of irradiation time 3.5 h,TiO2 dosage 4.0 g/L,and initial pH 6.3.

文章主要采用烧杯试验进行硅藻土精及复配硅藻土精强化混凝技术去除模拟洗浴废水中磷、氮的效果研究。试验结果表明:硅藻土强化聚合氯化铝(PAC)后能够提高废水中的总磷(TP)、总氮(TN)、氨氮(NH3-N)的去除率。当PAC投加量为150 mg/L时,通过混凝工艺对TP、TN、NH3-N去除率分别是91%、6%、21%,采用硅藻土强化PAC混凝工艺对TP、TN、NH3-N去除率分别为95%、58%、26%;复配硅藻土强化PAC混凝工艺对TP、TN、NH3-N去除率分别为95%、42%、64%。采用硅藻土精及复配硅藻土精强化混凝技术较生物技术脱氮除磷向大气排放二氧化碳等气体量少。

The paper mainly adopt beaker tests to treat simulation bath wastewater of phosphorus and nitrogen with diatomite and compound diatomite pure enhanced coagulation technology.Test results showed that： the diatomite strengthening the coagulation of PAC can increase the phosphorus and nitrogen efficiency.When the PAC dosing quantity for 150 mg/L,through the coagulation process the total phosphorus（TP）,total nitrogen（TN）,ammonia nitrogen（NH3-N） removal respectively is 91 %,6 %,21 %,using diatomite enhanced flocculation process of PAC the TP,TN,NH3-N removal respectively is 95 %,58 %,26 %.Compound diatomite enhancing the coagulation process of PAC,the TP,TN,NH3-N removal respectively is 95 %,42 %,64 %.Diatomite pure enhanced coagulation technology discharging carbon dioxide is less than by biological technology.