1. If the water contains chromium, it is estimated that your reduction is incomplete, resulting in incomplete reduction of hexavalent chromium, so the water is red. During the reduction process, you must ensure that the pH value is 2.5 or lower.
2. See if your water is mixed with deplating wastewater. If there is, there is anti-dye salt in it, which is difficult to get out with the general treatment process. It is suggested that deplating water and electroplating rinse wastewater should be treated separately.
3. Does your wastewater contain tank washing residue? If there is, the electrode residue inside cannot be removed by conventional methods. If so, even if the water is red, there are no metal ions in it, but metal particles, which will not bring trouble to the treatment of mud cakes after pressure filtration.
Characteristics of treatment and reuse equipment for electroplating cleaning wastewater
Electroplating cleaning wastewater treatment and recycling equipment adopts advanced special membrane separation technology, which has simple process, stable and reliable operation and high treatment efficiency. The system can not only effectively save limited water resources, thus reducing the consumption of water resources and alleviating the increasingly prominent contradiction of water shortage, but also reduce the discharge of sewage, reduce the pollution of surrounding water bodies and improve the living environment of human beings. The cost of wastewater recovery can be reduced to about one ton of 2 yuan. The reclaimed water can be supplied to the pure water system or directly reused in the production line. It has good economic benefits, and the initial cost can be recovered within 1-3 years.