We talked about in the previous article coagulation method can remove the organic humus in the water, but they have quite a high removal efficiency, especially the PAC removal effect is best. The coagulant mechanism of removal of humus is what? PAC manufacturer experts believe that the mechanism of coagulation method to remove humus is as follows

 1. Complexation: humic acid containing phenol hydroxyl, carboxyl and lower amount of fat hydroxyl, and some metal ions complexation reactions can occur. Al3 +, for example, some hydrogen Al3 + replace phenolic hydroxyl, generate humic acid aluminum complex sediment.

 2. The adsorption: humus by ion or molecular inter-atomic forces, and the water adsorption colloid, among them with cationic high polymer flocculants is a plus. Off through the adsorption bridging particles flocculate stability, hydrolysis of coagulants of alum flowers particles small, large surface area, can be more effective adsorption of humus in the water.

 3. The charge neutralization: humic acid, negatively charged with positively charged Fe (OH) 3 or Al (OH) 3 gel produce electrostatic attraction, through the charge neutralization, result in coagulation of colloidal humic acid salt.

    Coagulant added as one of the most important steps in the process of water treatment, for water treatment effect plays a decisive role, it is very important to choose what kind of coagulant, in view of the different water quality in the production of PAC products, and provide directional production, according to customer's production or according to customers samples production, water quality for the customer the latest water treatment experience.