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Factors Affecting Water Purification Effect of Polyaluminium Chloride

Factors Affecting Water Purification Effect of Polyaluminium Chloride

1. PH value and alkalinity of water. The hydrolysates of aluminium salt and iron salt coagulants have different shapes and coagulation effects with different PH values of water. It is required that water contains certain alkaline substances to neutralize H+ produced by coagulant during hydrolysis. If the alkalinity is insufficient, the PH value of water decreases and the hydrolysis reaction of coagulant is incomplete, which is unfavorable to the coagulation process.

2. The influence of water temperature. Water temperature is of great importance in many factors affecting water treatment. Low temperature has a great influence on the hydrolysis rate of coagulant. Low water temperature slows down the hydrolysis reaction rate. The low water temperature and the increase of water viscosity slow down the deposition of particulate matter and flocculent in water. In addition, the high gas solubility at low temperature increases the amount of dissolved gas in water. Many of these gases are adsorbed around the flocs and are not conducive to the sedimentation of flocs and particulate matter. When the water temperature is low, the potential energy of colloidal particles in water increases and the repulsion force increases, which is not conducive to collision destabilization of colloidal particles.

3. Hydraulic conditions. During the coagulation process, hydraulic conditions have a great influence on flocculent formation. The whole coagulation process can be divided into two stages: dosage and mixing of agents, reaction stage, which need to have good hydraulic conditions to cooperate.

4. The influence of particulate matter concentration in water. The concentration of particulate matter in water is another important factor affecting the treatment of PAC. Whether the treatment effect is good or not, the number of particles per unit volume and the number of useful knocks between particles are the key restricting factors. The high concentration of particulate matter and large collision time are conducive to the agglomeration of colloidal particles and floc growth. Particulate matter concentration in low temperature and turbid water is very low, collision probability is very small, in addition, water temperature is low, Brownian kinetic energy is small, particle motion is not active and agglomeration is not good.

Thank you for your attentionHenan aierfuke Chemical Co., Ltd：Focus on water treatment, only for the healthy world! Our company is committed toPolyaluminium chloride、Polyferric sulfateThe R & D, manufacturing and sales of series of water purification materials are willing to create success with our customers and friends.