the relative viscosity is up to 3.1 (0.5%)and the density of cationic quaternary ammonium group is up to 55% when the reaction temperature is 5 ℃, the reaction time is two hours, NaOH (to F691)is 0.4 g\g and the feeding ratio of the raw material is 1.6.

当反应温度为5℃,反应时间为2h,氢氧化钠投加量(按胶粉量)为0.4g\g,投料比为1.6时,制成的药剂相对粘度＞3.0(0.5%),阳离子取代度可达55%以上

属类：化学及生命科学-化学-论文文摘

FIQ-C had good efficiency of flocculation, corrosion inhibition and scal inhibition.

且FIQ-C具有良好的絮凝、缓蚀、杀菌性能。

属类：化学及生命科学-化学-论文文摘

The PASP (polyaspartic acid)is synthesized by means of pyrocondensation polymerization, using maleamic acid as a monomer.

以马来酰胺为单体,采用热缩聚法,合成了聚天冬氨酸(PASP)

属类：化学及生命科学-化学-论文文摘

The infrared spectrogram and molecular weight of synthetic products are determined.

对其测定了红外谱图和相对分子质量

属类：化学及生命科学-化学-论文文摘

The biodegradability, scale inhibition and relation of it with molecular are investigated.

研究了可生物降解性、阻垢性能及阻垢性能与相对分子质量的关系。

属类：化学及生命科学-化学-论文文摘

The results show that PASP is a biodegradable and excellent green scale inhibitor. The molecular weight range is 2 000～3 000.

研究结果表明,合成的聚天冬氨酸阻垢性能优异,阻垢作用的最佳相对分子质量范围为2000～3000,是一种可生物降解性好的绿色化学品。

属类：化学及生命科学-化学-论文文摘

scale inhibition; biodegradability

阻垢性能,可生物降解性

属类：化学及生命科学-化学-论文文摘

The synthesis path of polysilicon ferric sulfate (PSFS)is studied in this paper.

本文探讨了聚硅硫酸铁的合成路径

属类：化学及生命科学-化学-论文文摘

The best n(Si)\n(Fe), the optimum producing temperature and the optimum time are made sure.

确定了最佳n(Si)\n(Fe)(物质的量比),最佳活化温度,最佳活化时间。

属类：化学及生命科学-化学-论文文摘

By the test, PSFS is much better than the PFS.

通过性能测试,证明聚硅硫酸铁是比聚合硫酸铁性能更优良的絮凝剂。

属类：化学及生命科学-化学-论文文摘

polysilicon ferric sulfate; performance study

聚硅硫酸铁,性能研究

属类：化学及生命科学-化学-论文文摘

Study on synthesis and application of cationic flocculant PDA

阳离子絮凝剂PDA的合成与应用研究--对废纸再生造纸废水的处理

属类：化学及生命科学-化学-论文文摘

The results shows that the composite of PAC and PDA in the treatment of papermaking wastewater is more effective.

结果表明:无机絮凝剂与有机絮凝剂配合使用有很好的处理效果

属类：化学及生命科学-化学-论文文摘

Compared with the sample of higher cation, the sample of higher molecular weight in the treatment is more important.

配合使用中有机絮凝剂相对分子质量较高者与阳离子度较高者相比,前者更有利于提高处理效果。

属类：化学及生命科学-化学-论文文摘

After treatment, COD of wastewater can be reduced by 74%～77% and the transmittancy can reach 92%～99%. The formed floc. is solid and can easily be dewatered.

对废纸再生造纸废水的处理使上清液COD去除率达74%～77%,透过率达92%～99%,均超过作对比用的进口产品的处理效果,且下层絮体较大、坚韧、易于脱水。

属类：化学及生命科学-化学-论文文摘

The treating processes of cationic flocculant PDA on papermaking wastewater are reported in this paper. The flocculating behaviors of inorganic polymer coagulant (PFS or PAC), PDA and the composites of PFS or PAC and PDA are studied respectively.

报道了用PDA处理废纸再生造纸废水的处理过程,研究了无机絮凝剂聚合氯化铝、聚合硫酸铁或有机絮凝剂PDA单独处理废水和无机絮凝剂与有机絮凝剂配合使用处理废水的效果。

属类：化学及生命科学-化学-论文文摘

by testing the result of the ζ electricity of two different OH\Fe PFS, the flocculation mechanism of PFS was analyzed.

通过对两种不同盐基度聚铁溶液的电动电位测定,分析了聚铁的絮凝机理。

属类：化学及生命科学-化学-论文文摘

In this paper, a new kind of treatment process used to treat pharmaceutical wastewater is described in detail, and the optimal scheme to treat pharmaceutical wastewater is also determined.

通过对某制药厂杂环类制药废水处理工艺的考察,确定了处理该废水的最佳方案。

属类：化学及生命科学-化学-论文文摘

Firstly the wastewater is cooled and crystallized in order to deposit salt, and the removal efficiency of salt is about 70%.

首先对该废水进行冷却结晶,盐分析出率最高达70%左右

属类：化学及生命科学-化学-论文文摘

Secondly, the wastewater was oxygenated by Fenton reagent.As the result, the removal efficiency of TOC is about 60% and the value of BOD/COD is about

然后用Fenton试剂对其进行氧化处理,可使TOC去除率达到50%以上,可生化性达0.6左右

属类：化学及生命科学-化学-论文文摘