絮凝的定义和絮凝剂的分类

絮凝是聚合物的高分子链在悬浮的颗粒与颗粒之间发生架桥的过程。“架桥”就是聚合物分子上不同链段吸附在不同颗粒上，促进颗粒与颗粒聚

 should not be made up and stored in the iron container. The solution is prepared at a suitable temperature and should be used now. When the solution is placed for a long time, its performance will be gradually reduced depending on the condition of the water quality.

In the last few years, there are more and more manufacturers of polyacrylamide production. Before buying it must be tested to determine which type of polyacrylamide is more suitable, such as the cationic series. If the 10% degree of ionic degree is good, it will never purchase a 20% ionic polyacrylamide. Because only the difference between the specifications, the price may vary thousands of yuan, cationic polyacrylamide increases with the increase of the ionic degree, and the price is very different.

As for the efficiency of water treatment, the efficiency of polyacrylamide water treatment is also excellent. As an environmentally friendly water purification product, polyacrylamide will have a larger market. We know that the molecular weight of polyacrylamide is a fixed value, and often some manufacturers will provide you with the molecular weight of a few million to about ten million. Acrylamide, but the molecular weight is fixed, and will not reduce the molecular weight directly because of the effect of the compound. Finally, it is suggested to go to the regular factory when buying it. The price gap is very big, and it is sure not to buy inferior quality polyacrylamide. Home consultation, the price is reasonable and quality is excellent. You are welcome to inquiries at any time. Contact number: 15838356978.

Often encountered a lot of sewage treatment plants, especially in the south, because of the humid climate, the polyacrylamide in some sewage plants has been stacked for a long time or the packing mouth does not tighten up the moisture absorption caking. For the polyacrylamide flocculant caking, many people have doubt, is it invalid and can not be used again?

In fact, as long as you can dissolve it, the solution has a viscosity, it is not invalidated, but the polyacrylamide after the caking is difficult to dissolve, but it also means the waste of resources. The shelf life of different kinds of polyacrylamide is very different. This is related to its structure, and the effective time of the anionic polyacrylamide is relatively long, and the cationic polyacrylamide generally stipulates that the shelf life is 1 years. Over this period of time, it is considered to 

        在实际运用中由于混凝剂/絮凝剂/助凝剂都是高分子物质，同一产品中大大小小的分子都有，所谓“分子量“只是一个平均概念。所以，在用某一混凝剂助凝剂或絮凝剂处理污水是，“电中和”和“架桥”作用会交织在一起同时发生。絮凝过程是多种因素综合作用的结果，目前仍有一些没有认清和解决的问题。

        就我们所知，絮凝过程与絮凝剂分子结构、电荷密度、分子量有关；与悬浮颗粒表面性质、颗粒浓度、比表面积有关；与介质（水）的pH值、电导、水中其他物质的存在、水温、搅动情况等因素有关。因此尽管有理论和经验可循，用实验来选择絮凝剂仍然是不可缺少的