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Electroplating wastewater is mainly composed of pre-treatment acid and alkali washing wastewater and rinsing wastewater of electroplating process, in which acid and alkali wastewater is composed of pollutants such as washing down oil, rust, acid and alkali. Electroplating wastewater usually contains a large number of Cr6+, Cr3+, Ni2+, Cu2+ and other heavy metal ions, is a typical heavy metal ion wastewater.
The harm of electroplating wastewater is very great, heavy metals in electroplating into the water body, in the food chain has the role of amplification, but in some organs of the human body to accumulate up to cause chronic poisoning, endangering human health.
Heavy metal wastewater mainly from mining, machining, iron and steel, non-ferrous metal smelting, waste disposal of used batteries, and pesticides, pharmaceuticals, paints, pigments and other production process emissions of wastewater.
In a lot of surface treatment wastewater such as grinding, polishing wastewater, degreasing wastewater, pickling and phosphating wastewater, etc. There is also a rule to follow, this kind of wastewater treatment more ph adjustment process, generally in alkaline conditions for coagulation, and more ultra-high molecular weight anionic polyacrylamide as coagulant aid.
PAM can make the suspended material through electric neutralization, bridge adsorption, flocculation.
Adhesion, through mechanical, physical and chemical effects, it can play the role of adhesion.
Resistance reduction, PAM can effectively reduce the friction resistance of the fluid, adding a trace of PAM in water can reduce resistance by 50-80%.
Thickening, PAM has thickening effect in neutral and acid conditions.
When the PH value of more than 10 PAM is easy to hydrolyze, a semi-network structure, thickening will be more obvious, flocculation and precipitation is the occurrence of a chemical reaction that generates a substance insoluble in the solution where the reactant is located, from the literal meaning of the word is the effect of gravity to remove the precipitation, the suspended matter in the sewage, can be this is a physical process, easy to carry out, the effect is good, it is one of the important technology of sewage treatment.
With the continuous progress of society, environmental protection issues increasingly highlight the importance of green water and green mountains has become our common valuable assets, equivalent to an endless source of wealth. In the face of this key environmental protection field of water treatment, Yuxin Environmental Engineering Co., Ltd. sincerely invites your attention.
We focus on the provision of water treatment solutions, we are not only the pursuit of excellence in product quality, but also committed to technological innovation and service optimization, long-term commitment to answer customers in the process of water treatment encountered in a variety of questions and challenges.
Combined with YuXinHuan brand of high quality Polyaluminum chloride and polyacrylamide products, these two highly effective water purification agents are carefully produced by us to meet the diversified water treatment needs of customers.
Author: YuXinHuan®
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