??在平常假如我們常常運用，能夠選擇干粉顆粒狀聚丙烯酰胺，The classification obtained by the method is different. If the ionic type can be divided into Yin, non, amphoteric and cationic polyacrylamide, if according to the shape, it can be divided into four shapes: colloid, laxity, emulsion and dry powder. Which of these four forms is more suitable for us? The company gives you some suggestions. Next is our experience. I hope you will be interested.
In general, if we often use it, we can choose dry powder granular polyacrylamide. Because of its highest solid content, dry powder polyacrylamide is generally stored in dry and cool places for more than two years, but if mixed with solution, its storage time will be limited. Generally speaking, when the concentration of solution is 0.1%, non-ionic and anionic polyacrylamide will dissolve. The stability of cationic polyacrylamide solution depends on the concentration of the solution. For example, the more concentrated the solution is, the longer the storage time of 3%-5% solution is, but the 3%-5% solution can not be directly used to treat sewage. This solution needs to be diluted before use, and the PH value of cationic polyacrylamide solution is less than 5.5. Stability, if greater than 6.0, will be due to hydrolysis and failure, water medium dispersion polyacrylamide shelf life of six months.
Therefore, polyacrylamide is still a better choice of solids, can be used with the mix, do not cause waste.
Of course, we must pay attention to the conditions and taboos of preserving polyacrylamide. Polyacrylamide is more sensitive to iron ions, calcium ions and magnesium ions than anionic polymers. In particular, iron ions are catalysts for the chemical degradation of all polyacrylamide. Therefore, in the manufacture, handling and storage of polyacrylamide solutions, we must try to avoid iron ions entering and touching the solution. The equipment should be made of plastics, stainless steel, FRP or carbon steel with surface coating resin.由于它的固含量，一般情況下干粉聚丙烯酰胺在干燥、陰涼的當地是寄存二年以上的，但假如配成溶液的話，它的寄存時刻就有限了，一般說，溶液濃度為0.1%的時候，非離子與陰離子聚丙烯酰胺溶液不會超過一周的時刻，陽離子聚丙烯酰胺溶液則不會超過一天，而且溶液的穩定性與溶液的濃度有關，配的濃度越濃，例如3%——5%的溶液寄存時刻越長，但3%——5%的溶液不能直接去處理污水，這種在運用前需要稀釋，陽離子聚丙烯酰胺溶液PH值小于5.5的時后比較穩定，假如大于6.0的話，就會由于水解的原因而失效，水介質渙散型聚丙烯酰胺保質期為六個月。
生化末端 沒有影響，何況少量的鐵鹽能夠對Phosphorus removal agent for road treatment is a kind of material for coagulation and turbidity removal of urban water source and phosphorus removal. It can reach the intent of deep dephosphorization at the same time of coagulation and turbidity removal of urban water source.
Thus, the phosphorus content in treated drinking water can be reduced to below the threshold value, without changing the original water treatment process, without adding large water treatment structures, which is simple, economical and practical, and can achieve remarkable social and economic benefits.
The amount of phosphorus removal agent used in river regulation will not cause adverse effects. After all, iron is also a trace element needed for microbial growth. However, if the dosage is too large, the sludge activity will be affe
聚合氯化鋁的使用方案后在進行大量的投加使用，其中小試需要得到的有聚合氯化鋁的類型、含量、溶解濃度、使用方法等。那么如何進行聚合氯化鋁的小試呢？河南環?？萍加邢薰緸槟榻B一下。
