How to Treat Gelatine Wastewater

Gelatine has a wide range of uses, but the wastewater produced by gelatine production still needs to be treated.

According to the gelatine production method, we know that gelatine is mainly produced by alkali method, which produces large star wastewater in the production process, and the wastewater is characterized by high alkali, high calcium, high chlorine, high COD, complex water quality and large water volume.

Because gelatin wastewater has such characteristics, treatment of this wastewater should first destabilize the water body. Suspended particles and colloidal particles in the wastewater is very light, by the molecular thermal movement of the collision of irregular Brownian motion, while the colloid with an electric charge, the same type of colloid with the same charge, the formation of repulsive force between each other, can not be close to each other to form a large particle sinking.

According to years of practice, our company summarized a set of practical treatment methods. That is, coagulation destabilization, flocculation and sedimentation method.

Coagulant is mainly Polyaluminum Chloride and sulfate class(including Aluminum Sulfate, etc.). In the water treatment coagulation process, the coagulant will be added to the metal ion hydrolysis and polymerization reaction process, at this time, the colloidal particles in the water can be strongly adsorbed hydrolysis and polymerization reaction products. The adsorbed positively charged polynuclear complex ions can compress the double layer, reduce the potential, so that the colloidal repulsion is reduced to achieve the purpose of particle destabilization. Flocculant is mainly polyacrylamide, polyacrylamide belongs to the organic polymer flocculant, mainly through the adsorption of bridging effect of colloidal particles adsorbed to the molecular chain, the formation of large flocculants.

Therefore, the flocculant Polyacrylamide has an important role in the treatment of wastewater.