Application of PAM in the treatment of electroplating wastewater

Sources of electroplating wastewater: (1) plating parts cleaning water; (2) waste plating solution; (3) other wastewater, including scouring workshop floor, scrubbing plate washing water, ventilating equipment condensate, and leakage or operation due to plating tank Various tanks and drains of “run, run, drip, leak” caused by improper management.

Characteristics of electroplating wastewater:

(1) The acidity is large. Since the oxide on the metal surface is generally washed by acid, the acid used cannot be fully utilized, and a part remains and is washed into the wastewater pool.

(2) Contains a large amount of heavy metals, often containing heavy metals such as Cr6+, Cu2+, Ni2+, Zn2+, and Fe2+.

(3) Contains highly toxic substances. For example chromium and cyanide.

Wastewater treatment: 1. Air floatation method 2. Ion exchange method Electrolysis method 4. Extraction method

After the electroplating wastewater has been treated by the above several methods, most of the heavy metals and harmful materials in the wastewater are treated, and further treatment is needed to meet the discharge standards. This requires the use of universal additives PAM, anionic PAM and non-ionic PAM in the treatment of electroplating wastewater than the other flocculant unmatched superiority.