The role of Industrial Aluminum Sulfate a lot, it can be in addition to phosphorus, Xiao Bian for everyone to introduce the reasons.
Industrial Aluminum Sulfate in wastewater can be used for phosphorus removal, which is due to its own acidic, and acidic agents with the PH value of sewage and continue to hydrolysis. The carboxyl group is formed to form a polynuclear carboxyl complex which reacts with the orthophosphate in water to produce a phosphate precipitate to achieve the effect of phosphorus removal.
Phosphorus in wastewater can be divided into three kinds of orthophosphate, partial phosphorus and organic phosphorus. The positive phosphorus is easily reacted with lime, Industrial Aluminum Sulfate and so on to produce phosphate precipitates. Therefore, when the chemical phosphorus is removed from the waste water, it is actually removed only in the water. While the partial phosphorus and organic phosphorus is not easy to disengage with water, not with the coagulant reaction to produce sediment. In this regard, in the sewage treatment, the use of biochemical way, through the microbial adsorption, degradation, conversion will be partial phosphorus, organic phosphorus is converted to orthophosphate to achieve the purpose of phosphorus removal.
For the phosphorus pollution in the wastewater, we will use Industrial Aluminum Sulfate to carry out phosphorus removal, so as to achieve better treatment results and save processing costs.
Industrial Aluminum Sulfate at a certain temperature, in order to play its maximum benefit, the following for everyone to talk about:
It has been found that when the temperature is below 5 ° C, the hydrolysis rate of PAC is slow and its molecular structure changes from active state to stationary or inactive state. When the temperature is 5-20 ℃, the structure of Industrial Aluminum Sulfate is the most stable molecules, especially at about 20 ℃ water temperature, can make PAC rapid hydrolysis, and the temperature at -5 ℃, the molecular structure with the slow stop activity , The rate of hydrolysis slowed down, and the reaction rate of pollutants in water is also slow, it is difficult to form alum. In addition, the water temperature is too low will increase the viscosity of the water, flocculation reaction is slow, the sedimentation effect is weakened, floc more difficult to collide with each other, cohesion, alum particles fine.
In the cold winter in the north, you can choose to join the pharmacy at about 10 am or around 3 pm. When the temperature is too high, PAC hydrolysis speed, and the water pollutant reaction rate is too fast, the formation of flocs smaller, strong hydration, sludge moisture content increased, sludge treatment costs. Industrial Aluminum Sulfate may also be in high temperature inactivation, can not play its role in polymer flocculation. Therefore, when using Industrial Aluminum Sulfate, the water temperature can be controlled above 5 ℃, preferably at 20 ℃ -50 ℃, that is, under normal temperature, the higher the temperature, the more intense the Brownian motion, the faster the reaction rate.