- Loss of raw materials and products.
In the various processes of reclamation, transportation, production, etc., some materials and products will be lost, and they will be washed by wind, rain and heavy snow to form chemical pollution wastewater.
2. Leakage of pipes and equipment.
Leakage is often formed during chemical production and material handling due to improper operation of pipes or equipment or poor sealing.
3. Cleaning of production equipment.
Containers, equipment and pipes for chemical production need to be cleaned frequently during the actual production process. The remaining materials may be discharged together with the washing water, eventually forming waste water.
4. Unreacted raw materials.
Waste waste generated during the production process due to incomplete chemical reactions. In some chemical reactions, the raw materials can only reach a certain yield during the reaction due to their own purity and reaction conditions. For products that require a few steps to get, the amount of loss is greater. These unreacted raw materials flow into the water body through different routes to form chemical wastewater.
5. Generation of by-products.
In the case of chemical production reactions, side reactions are often accompanied, and by-products are formed. Although the quantity is not large, the composition is relatively complicated and is not easy to handle as wastewater discharge.
6. Cooling water.
Cooling water forms pollution through three pathways. First, when the cooling water cools the material, a small amount of material is taken away when the cooling water is discharged, forming a pollution. Second, indirect cooling, the temperature of the discharged water rises, and thermal pollution may form. Third, when cooling, water quality stabilizers are added to the water to form pollution.