The coagulation of polyaluminium ferric chloride is affected by multiple factors such as mixing intensity, mixing time, coagulation intensity, and coagulation time. Let's focus on the following:
1. The effect of mixing intensity on coagulation
A certain mixing intensity is beneficial to the rapid formation of flocs. When the mixing intensity is low, the hydrolysis of PAFC is completed before it is quickly and evenly dispersed into the water; some of its hydrolysis products do not react with the colloidal particles and become ineffective components. Because PAFC not only has strong electrical neutralization ability, but also strong adsorption and bridging ability, it can quickly form flocs; when the mixing intensity increases, the shear force of the water flow also increases; when the mixing intensity is too high, the formed flocs will be broken due to the excessive shear force of the water flow, and the rate of flocs being broken by shear is much faster than the formation of flocs due to the increase in the probability of collision.
2. The effect of mixing time on coagulation
With the increase of mixing time, the turbidity of the effluent after sedimentation decreases first and then increases. This shows that the appropriate mixing time is very important for coagulation. If the mixing time is too short, the dispersion and mixing of the coagulant in the water are not sufficient, and some coagulants do not work, resulting in high turbidity of the effluent after sedimentation; if the mixing time is too long, the larger flocs formed are unstable, resulting in smaller flocs and increased turbidity of the effluent.
3. Effect of coagulation intensity on coagulation
With the increase of flocculation intensity, the turbidity of the water after sedimentation first decreases and then increases. This shows that the appropriate flocculation intensity is conducive to increasing the probability of collision between flocs and forming flocs that are easier to settle, but it does not destroy the stability of the flocs that have been formed and can settle.
4. Effect of coagulation time on coagulation
With the increase of flocculation time, the turbidity of the water after sedimentation first decreases and then increases. This shows that the appropriate flocculation time is conducive to the increase of flocs, but the appropriate duration of the flocculation time is inversely proportional to the flocculation intensity: when the flocculation time is long, the flocculation intensity should be low; when the flocculation time is short, the flocculation intensity should be high.
In short, mixing intensity and mixing time play a key role in coagulation. The mixing intensity must match the coagulant to ensure that the water purifier is fully and evenly distributed in the water body before it is completely hydrolyzed; and there must be enough mixing time for the coagulant to fully play a role, but it should not be too long. Coagulation time and coagulation intensity have a significant impact on coagulation. The effects of coagulation time and coagulation intensity on coagulation restrict each other: when the coagulation time is long, the coagulation intensity should be low; when the coagulation time is short, the coagulation intensity is high. Therefore, various factors should be considered comprehensively, and the appropriate coagulation intensity and the coagulation time that match it should be selected according to the actual situation.
The main products of flocculant manufacturer Xinhuan Water Treatment are:
White polyaluminium chloride (food grade), drinking grade polyaluminium chloride, industrial grade polyaluminium chloride, anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide, petroleum recycling polyacrylamide, oil recovery polyacrylamide, polyacrylamide, polymer flocculant polymer flocculation coagulant, polymeric ferrous sulphate, polyferric aluminium chloride and other water treatment chemicals. Welcome customers to write to us to negotiate business! Tel/WhatsApp：+8619003830067 Email：joanna@xhwtm.com Contact:Joanna
