What are the techniques for vegetable processing?
The treatment processes for vegetable processing wastewater mainly include the following:
1. Pre treatment process
Oil separation technology: used to stimulate oil and suspended solids in the skin, usually through an oil separation tank for initial treatment to reduce the burden of subsequent biochemical treatments.
Coagulation technology: By adding coagulants, suspended solids in water are aggregated into large particles for precipitation and removal. This process is usually carried out in a coagulation tank, which can effectively remove small particles and colloidal substances from water
2. Biochemical treatment process
Aerobic Biochemical Treatment: Utilizing microorganisms to cascade organic matter in an aerobic environment, commonly used equipment includes activated sludge process and biofilter. This process is suitable for treating wastewater containing high concentrations of organic matter.
Anaerobic Biochemical Treatment: Under anaerobic conditions, organic matter is anaerobically degraded, suitable for high concentration organic wastewater, which can effectively reduce COD (chemical oxygen demand) in wastewater
3. Post processing technology
Membrane separation technology: including reverse osmosis and ultrafiltration, which remove dissolved salts and small water molecules in water through membrane permeation, suitable for occasions with high concentration requirements
Advanced oxidation technology: utilizing strong oxidation such as ozone and ozone to deeply treat wastewater, effectively removing recalcitrant organic pollutants and improving effluent quality
4. Comprehensive utilization
Resource recycling: During the treatment process, appropriate processes are used to recover nutrients (such as nitrogen, phosphorus, etc.) from wastewater, achieving resource reuse and reducing production costs for enterprises
The combination of these processes can effectively improve the treatment efficiency of vegetable processing wastewater, reduce the impact on the environment, and promote the recycling of resources.