With the increasing awareness of environmental protection, environmental issues in the production of galvanized hexagonal wire mesh have attracted much attention. Traditional galvanizing processes may produce a large amount of pollutants, while environmentally friendly galvanizing technology is committed to minimizing pollution emissions in the production process while ensuring product quality and achieving sustainable development.
Traditional hot-dip galvanizing processes usually use plating solutions containing a large amount of zinc slag, zinc ash and heavy metal ions, which will produce a large amount of wastewater, waste gas and waste slag during the galvanizing process. The wastewater contains heavy metal ions such as zinc, iron and lead. If directly discharged, it will cause serious pollution to the water body and endanger aquatic life and human health. The waste gas contains harmful substances such as acid mist and zinc smoke, which will pollute the atmospheric environment and affect the air quality. The waste slag contains a large amount of zinc and other metal impurities. If it is not handled properly, it will occupy land resources and may cause soil pollution.
Cyanide-free galvanizing is an important environmentally friendly galvanizing technology. Although the traditional cyanide galvanizing process has a good electroplating effect, cyanide is a highly toxic substance that is extremely harmful to the environment and human body. Cyanide-free zinc plating uses a non-cyanide bath system, such as zincate zinc plating, sulfate zinc plating, etc. These baths do not contain cyanide, eliminating the use of highly toxic substances from the source, greatly reducing the difficulty and cost of wastewater treatment, and reducing potential harm to the environment. At the same time, the bath stability of the cyanide-free zinc plating process is good, which can improve the zinc plating efficiency and reduce energy consumption to a certain extent.
Environmentally friendly zinc plating technology reduces pollution emissions by optimizing the composition of the bath. On the one hand, efficient complexing agents and additives are used to improve the performance of the bath, making the zinc coating more uniform and dense, thereby reducing the amount of zinc used. On the other hand, impurities in the bath are strictly controlled and regularly treated to prevent the accumulation of impurities from affecting the performance of the bath and product quality, and reduce the discharge of waste residues caused by the failure of the bath. In addition, some new bath components also have good biodegradability, reducing the long-term impact on the environment.
In the production process of environmentally friendly zinc plating, effective treatment measures are taken for the waste gas generated. By installing an efficient acid mist absorption device, the acid mist generated during the electroplating process is collected and treated. Acid mist absorption devices usually use spraying, filtering and other technologies to make the acid mist fully contact with the absorption liquid, converting the acid gas into harmless salt substances, thereby reducing the pollution of the acid mist to the atmosphere. For zinc smoke and other particulate matter, bag filters or electrostatic dust collectors are used to collect the particulate matter from the exhaust gas to achieve standard discharge.
Environmentally friendly galvanizing technology focuses on the treatment and recycling of wastewater. First, the wastewater is classified and collected, and the wastewater containing heavy metal ions and acid and alkali wastewater are treated separately. For wastewater containing heavy metal ions, chemical precipitation, ion exchange and other methods are used to remove heavy metal ions so that the wastewater meets the discharge standards. The treated wastewater can be recycled and used for pre-plating cleaning and other processes to reduce the use of fresh water. At the same time, by establishing a wastewater treatment and reuse system, water resources can be recycled, and water resource consumption and wastewater discharge can be reduced.
The environmentally friendly galvanizing technology of galvanized hexagonal wire mesh effectively reduces pollution emissions in the production process and reduces harm to the environment by adopting a cyanide-free galvanizing process, optimizing the composition of the plating solution, strengthening waste gas treatment, and realizing wastewater treatment and recycling. It also improves resource utilization and provides a sustainable development path for the production of galvanized hexagonal wire mesh. With the continuous advancement of technology, environmentally friendly galvanizing technology will play a greater role in reducing pollution emissions.
