Electroplating waste contains many serious toxicities to living things. If it is not added, it will constitute an extremely serious damage to the ecological environment. Ultrafiltration membrane manufacturers introduce you to the main sources of electroplating waste.
1. Cleaning the discharged wastewater; although the pollutants contain low amounts of water, they cannot be ignored because of the large amount of emissions.
2. When the waste solution, plating solution cleaning solution, etc. are ineffective, they cannot be regenerated, and when they are renewed or replenished, they must be discarded.
3. Unintentional emissions during electroplating, such as leakage, spillage, etc.
4. Secondary pollutants: sludge deposits left after discharge treatment
How do electroplating companies turn garbage into resources? We look at two important links from some information:
Aluminium is a waste water in the production process of aluminum flower. The surface treatment of aluminum is a pollutant with a large discharge and a direct impact on the environment. Due to the long process flow of the electric MIL-A-8625, there are many processes involved, and each process must use a variety of academic products, and each process must be cleaned before entering the next process. This makes the electric waste forest not only a large amount, but also a complex composition, often containing a variety of harmful substances, direct emissions will be polluted by the environment. Some are long-lived and difficult to eliminate. For example, all kinds of heavy gold exhibitions will accumulate in the water, and will accumulate in the human body. Once a certain concentration is reached, harm will occur, and once a hazard occurs, It is difficult to rule out.
Cleaning process clean water and reducing pollution, saving electroplating in the washing process using a more reasonable way "water-use" water washing, counter-current cleaning and spraying. For example, in the four cleaning tanks after the chromic acid roughening tank, the same amount of water, the league level and the spray countercurrent rinsing step than the washing step by step, the chemical concentration in the water is diluted 1000 times.
Considering that the temperature of the roughening tank can evaporate the surface of the liquid, almost all the washing water can be used to supplement the surface damage of the roughing tank to achieve zero discharge. In water systems, sludge can be produced due to slow flow, and filtration facilities must be configured to remove them.