The application of amphoteric flocculant in water treatment
Amphoteric flocculant is hydrolyzed and copolymerized by cationic and anion groups in the molecule. Advantages: it has the use characteristics of general cationic flocculant and has better performance. These flocculants can be used over a wide range of PH values, have higher filter water, lower cake moisture content, and can also be used for strong acid leaching of ores or recovery of valuable metals from acidic catalysts containing metals. The amphoteric type is not a mixture of anionic and cationic types. If the cationic flocculant and anionic flocculant used with reaction will produce precipitation. So amphoteric products are ideal.
Characteristics and application of amphoteric flocculant
1) Profile control and water plugging agent. Through oilfield tests, the performance of this new zphoteric ion profile control and water plugging agent is higher than that of other profile control and water plugging agents with single ion characteristics.
2) the latest model of water treatment agent. on many occasions and sewage water, amphoteric flocculant(flocculant) to reduce the surface tension is far greater than under the same conditions the performance of cation or anion exist alone, to reduce the surface tension of requirements, need to use both anionic flocculant and cationic flocculant, if use undeserved, then both will produce white sediment, Loss of effectiveness. And amphoteric flocculant(flocculant) has the characteristics of amphteric ion, it can complete the coordination and synergy of anion, cation, without any precipitate, especially for the water quality is more complex or water properties often change, the use of amphoteric flocculant(flocculant) as flocculant treatment is more convenient and better effect.
3) sludge dehydrator,.due to the nature of the urban sewage emissions is more and more complex, so the sewage treatment more and more high to the requirement of sludge dewatering agent, single some cationic flocculant in sludge dewatering has some not too orientation, so my company for this kind of situation has developed the zwitterionic amphoteric flocculant(flocculant) sludge dehydrator, After dewatering test and application of various sludge, it is superior to flocculant with single ion characteristics. In particular, the effect of using amphoteric flocculant(flocculant) to dehydrate sludge from refineries and chemical plants is more prominent.
4) In the paper industry, as a paper chemical, its effect is more single characteristics of PAM can not be compared, especially in the retention, filtration aid can improve the net filtering speed, reduce the loss of fiber filler, has a good effect on the wet part of the system, the smoothness of paper, strength and the difference between the two sides of the promotion and compensation.
In general, amphoteric flocculant is widely used in sludge dewatering fields such as municipal sewage treatment plants, brewery, food factory, tannery, paper mill, petrochemical plant, oil field, metallurgy, chemical industry and cosmetics.