Heavy metals in water mainly exist in wastewater from industries such as mining, smelting, electroplating, painting, medicine, and pigments. Its types and contents may also vary somewhat in different industries. Since heavy metals cannot be decomposed or destroyed, they can only be relocated and their physical and chemical forms transformed.

For instance, after undergoing chemical precipitation treatment, heavy metals in the wastewater transform from dissolved ions to insoluble compounds and precipitate, transferring from the water to the sludge. After the ion exchange treatment, the heavy metal ions in the wastewater are transferred to the ion exchange resin. After regeneration, they are transferred from the ion exchange resin to the regeneration waste liquid. It is precisely for this reason that the principle of heavy metal wastewater treatment is to fundamentally reform the production process, avoid or minimize the use of highly toxic heavy metals, and in addition, adopt reasonable process flows, scientific management and operation to reduce the amount of heavy metals used and lost with wastewater, and minimize the amount of wastewater discharged.

Heavy metals in wastewater should be treated accordingly and can only be discharged after passing the test. As for how to handle it, it can be divided into two situations: 1. Transform the heavy metals in the wastewater that are in a dissolved state into insoluble metal compounds or elements, and remove them from the wastewater through sedimentation and flotation. 2. The concentration and separation of heavy metals in wastewater should, of course, be carried out without altering other chemical forms of the heavy metals.

Other issues: If users need to conduct real-time monitoring of their wastewater, they can consider the online heavy metal analyzer for water produced by Hangzhou Modi at this time. Different parameters require different water quality analyzers, and the specific choice should still be based on their own circumstances!