The effect of the viscosity of the decolorant on the decolorization effect is negligible. The decolorization of the decolorizing agent mainly depends on the bonding and electrical neutralization of the reactive groups on the molecular chain, and other adsorption bridging and net trapping effects are limited. Only when the concentration of pollutants in the water is high, the adsorption bridge and net catching effect will exert certain effects. Diameter 30mm SPI 3D Tube, it also called 3d light and 3D LED Light tube, we have different length 0.5m 3D tube, 1m 3D tube, 1.5m 3D tube and 2m 3D tube, the SPI 3D LED Tube can use for led dancing light. SPI LED Tube Light is similar DMX 3D LED Tube, but the control ic is different.
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Decolorizer and polyacrylamide have the effect of water purification
[ Time:2011-2-27 Click:]
Both the decolorizing agent and the polyacrylamide have the function of purifying water. With the wider application of the decolorizing agent, it is easy to confuse the decolorizing agent and polyacrylamide. Jinhao gives you a detailed answer to understand the difference between them.
First: different uses. The decolorizing agent is mainly used to remove dissolved organic matter in water, and the cationic polyacrylamide is mainly used as a coagulant when it is combined with a decolorizing agent.
Second: the viscosity can be changed by additives. Due to the determination of the raw materials and process of the decolorizing agent, the viscosity produced is not more than 200 cps, generally about 100-150 CPS, which can be achieved by controlling the temperature of the reaction. However, if you want to further increase the viscosity, you must add a thickener to achieve, which is like detergent, the detergent has just made a very low viscosity, so why use it so thick, is the addition of thickener. The decoloring agent is also the same, adding a thickener, the viscosity of the decolorizing agent can reach 500 cps, but the effect is the same as that without the thickener, and even worse, because the addition of thickener will be related to the activity of a part of the decolorizing agent. The group reacts or blocks the reactive groups.
Third: the principle of action is different. The principle of decolorizing agent is to form small flocs by chemical bonding and electrical neutralization. This requires that the decolorizing agent must maintain good solubility, ensure rapid diffusion in water, and fully collide with organic molecules in wastewater. The reaction; at the same time, there must be an appropriate charge density, which requires that the molecular chain of the decolorizing agent should not be too long. Since the decolorizing agent is a polymer, various raw materials are different in reaction state at the time of reaction, and the temperature of the decolorizing agent is controlled to form an appropriate molecular weight by controlling the temperature. The larger the molecular weight, the longer the molecular chain of the decolorizer will lead to a decrease in the diffusion rate, and the solubility will also decrease, especially at lower temperatures (below 5 degrees), which will stratify whitening and affect the use; It also reduces the charge density of the decolorizer, affects chemical bonding, and reduces its use. If the molecular weight is smaller, there are few active groups on the molecular chain, which affects chemical bonding, and also reduces the chance of collision with organic matter. The formed flocs are very small, which will leave many fine suspended matter in the treated water, affecting the effluent. Water quality.
Fourth: the viscosity is too high, but will reduce the decolorizing effect of the decolorizing agent. Decolorization of the decolorant is to reactive groups and electrical neutralization. If the viscosity is high, then a lot of reactive groups are consumed to form long molecular chains; at the same time, long molecular chains reduce the charge density. High viscosity will reduce its water solubility, and it will easily stratify and whiten in winter, which will affect the use.
Fifth: the effect of the viscosity of the decolorizing agent on the decolorization effect is negligible. The decolorization of the decolorizing agent mainly depends on the bonding and electrical neutralization of the reactive groups on the molecular chain, and other adsorption bridging and net trapping effects are limited. Only when the concentration of pollutants in the water is high, the adsorption bridge and net catching effect will exert certain effects. However, in practice, the decolorizing agent is generally used in the biochemical pool after the water, the COD at this time is about 100mg / L. Moreover, the decolorizing agent is generally used in combination with polyaluminum, and does not require a decolorizing agent at all to exert a strong adsorption bridge and sedimentation net.
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