The bean products wastewater treatment process has been studied by SBR. The influence of reaction time under low dissolved oxygen on SBR system was studied. The experimental results indicated that under the condition of influent COD was 330~460 mg/L, the reactor has a good degeneration ability on COD, NH4+-N,NO2--N,NO3--N. And NO2--N accumulation reached a maximum after aeration 3 h. The aeration and time could be saved effectively when the aeration was stopped, and the power and costs were saved.

Soy sauce wastewater contains a lot of organic matters.COD and color are very high in wastewater.In this paper,the SBR process was used to remove the COD and color of simulated soy sauce wastewater.It was concluded that,when pH was 7,and the aeration time was 3 h,and the removal rate of COD was 86.9％.With the increase of the initial COD,the effluent COD was increased,and the removal rate was decreased.When the effluent wastewater was treated with PAC and Ga (OH) 2,the color can be reduced to about 40 times,reaching the two level of sewage discharge standard.

The waste water treatment effect of activated sludge under low dissolved oxygen conditions studied using SBR technology.The results indicated that the best removal rate was achieved when the dissolved oxygen concentration was stabilized at 1 mg/L, the time of in-fluent was half an hour, the mixing of facultative anaerobic was also half an hour, and the aeration was 3 hours.Under this conditions, the average concentrations of COD, ammonia ni-trogen and phosphate in the reactor effluent were 48.46 mg/L, 7.65 mg/L and 0.42 mg/L, respectively, and the removal rates were 82.73%, 80.66%and 92.18%, respectively.

本实验采用SBR 法处理模拟乳制品废水，实验温度在室温时好氧运行反应器的曝气时间对污染物去除效果的影响。实验结果表明：模拟废水COD浓度的配置控制在800 mg／L～1000 mg／L之间，通过3小时的曝气，其 COD 去除率可达90％以上， NH4＋－N 和PO43－－P去除率可达到80％以上。采用SBR法处理模拟乳制品废水是实际可行的。

Nano ZnO/graphene composites were prepared by the oxidation of graphite and nano ZnO as the precursors under the condition of water temperature at 120 ℃.The photo-catalytic activity of the composite was detected to treat simulated antibiotic wastewater by u-sing the solution of ceftazidime with 300 W xenon lamp light source .The optimal conditions for the degradation of the composite material were obtained by single factor test and orthogo -nal test.The optimized conditions were obtained as follows: the amount of catalyst was 25 mg, the time was 3.5 h, and the pH value was 6.The ratio of ZnO and graphene oxide was 15∶1.The degradation rate of the solution of ceftazidime could reach 95%.

用溶胶凝胶和水热方法合成了TiO2和石墨烯的复合材料,对模拟制药废水进行了光催化氧化处理的研究.以盐酸土霉素模拟抗生素废水,对复合材料的光催化性能进行测试,进行了单因素实验,确定最佳处理抗生素制药废水的工艺条件.实验表明,催化剂投加量为10 mg、盐酸土霉素溶液质量浓度为20 mg/mL、反应时间为0.5h时,光催化降解效果最好,可以达到82.53％.

Fe2O3 nanorods grown on reduced graphite oxide(RGO) was synthesized via a facile hydrothermal method followed by a heat-treatment process. The Fe2O3 nanorods grown on the RGO has a average diameter of 40 nm, which is smaller than the pure Fe2O3 nanorod. Investigated as an anode material for Li-ion batteries, the composites exhibits a stable and reversible capacity of over 1000mAh g(-1) and better cycle performance than Fe2O3 nanorods. The improving performance may because that the structrue provides a short path for lithium-ion diffusion and effective accommodation of the strain generated from volume expansion during the lithiation/delithiation process.

Nano ZnO/graphene composites were prepared by the oxidation of graphite and nano ZnO as the precursors under the condition of water temperature at 120 degrees C. The photocatalytic activity of the composite was detected to treat simulated antibiotic wastewater by using the solution of tetracycline hydrochloride with 300W xenon lamp light source. The optimal conditions for the degradation of the composite material were obtained by single factor test. The optimized conditions were obtained as follows: the amount of catalyst, the time and the pH value was at 20mg, 4 hours and 5 respectively. The degradation rate of the solution of tetracycline hydrochloride could reach 86.7%.

In order to remove the fluoride of drinking water , the modified zeolite was investi-gated in this paper .The fluoride of simulative drinking water removal effect was studied with two different pretreatments .When NH4 Cl was used in the first pretreatment , the rate of flu-oride removal efficiency could reach 95%.The NaOH was used in the second pretreatment , and the rate of fluoride removal efficiency could reach 85%.Dynamic fluoride removal ex-periment was investigated under the NH 4 Cl pretreatment .The results showed that fluoride of simulative drinking water removal efficiency was better and it could reach 95%when NH4 Cl used as modified pretreatment with weakly acidic conditions .