Combined effect of US/PFS on the black liquor of making paper

The reed pulping black liquor is used as a sample. Researches of (1) combined effect of ultrasound(US)/polyferric sulphate(PFS)/hydrogen peroxide(H2O2); (2) effects of the horn tip areas; (3) effect of dose of PFS were carried. Extrapolation of these experiments indicated treatment results are possibly related to complex chemical compositions in the reed pulping black liquor.     

Preparation and characterization of visible-light-active nitrogen-doped TiO2 photocatalyst

A visible-light photocatalyst was prepared by calcination of the hydrolysis product of Ti(SO4)2 with ammonia as precipitator. The color of this photocatalyst was vivid yellow. It could absorb light under 550 nm wavelength. The crystal structure of anatase was characterized by XRD. The structure analysis result of X-ray fluorescence(XRF) shows that doped-nitrogen was presented in the sample. The photocatalytic activities were evaluated using methyl orange and phenol as model pollutants. The photocatalytic activities of samples were increasing gradually with calcination temperature from 400℃ to 700℃ under UV irradiation. It can be seen that the degradation of methyl orange follows zero-order kinetics. However, the calcination temperatures have no significant influence on the degradation of phenol under sunlight. The N-doped catalyst shows higher activity than the bare one under solar irradiation.     

城市污水处理厂SBR工艺设计及脱氮效能

介绍了市政建设项目宁海县兴海污水处理有限公司主要的设计参数及各单元运行过程，并总结了该系统对有机物及氮磷的处理效果，分析了SBR工艺生物处理氮的主要影响因素。     

内电解－混凝－SBR－生物炭组合工艺处理染料废水

详述用内电解—混凝—SBR—生物炭组合工艺处理染料废水的过程。通过对各工艺段的调试，确定了各工艺段的最佳控制条件。结果表明：当染料废水COD平均值为5100mg／L，色度为6000倍时，去除率达95％以上，出水水质达到国家污水综合排放二级标准。     

一种紧凑型的废水处理新技术—沙轮工艺

根据国内外相关文献和作者的访荷观感，简要介绍了沙轮（SHARON）工艺的原理，先进性及其在荷兰的应用，并对其在在我省太湖流域污染防治中的应用提出了建议。     

MBR脱氮工艺的研究进展

综述了MBR的脱氮工艺：A／O阶段MBR工艺和单级A/O程序MBR工艺的特点及脱氮效果，介绍了MBR脱氮工艺中的同步硝化反硝化和短程硝化反硝化现象，提出了研究方向和应用前景。     

印染废水生物脱色研究现状及展望

对印染废水脱色研究现状进行评述分析,并对其发展趋势进行了讨论.     

移动式絮凝-气浮集成系统研制及其在城市污染河湖治理中的应用

针对北京城市河湖的污染状况,论述了传统絮凝-气浮工艺在污染治理中的应用研究及以该工艺为基础的集成系统的开发.结果表明,该系统对TP、COD去除率分别达81%和75%.该系统的研制成功为城市河湖的污染治理开辟了新途径.     

两相厌氧在浆粕废水处理工程中的应用

浆粕废水组分较为复杂，废水治理具有一定的技术难度，采用两相厌氧、间歇式活性污泥法和物化处理组合工艺可以取得较好的效果。生产运行表明：两相厌氧工艺对CODCr、BOD5的去除效率分别达67%～78％，和82％～87％，生物水解使挥发酸提高了2．3～3．4倍。根据水质和水量的变化情况，及时调整其操作参数可使水解池维持良好的运行状态。