Photovoltaic cell production wastewater mainly includes acidic wastewater, alkaline wastewater, high-concentration fluorine-containing wastewater, high-concentration nitrogen-containing wastewater and so on. These wastewaters are harmful to the environment and need to be treated effectively.
Photovoltaic cell production wastewater treatment processes are mainly the following:
Physical treatment process: the process mainly uses physical and chemical methods to remove pollutants in the wastewater. Commonly used physical and chemical treatment methods include:
Adjustment of pH value: the pH value of the wastewater will be adjusted to the appropriate range, in order to facilitate subsequent treatment.
Coagulation and precipitation: add flocculants to the wastewater to make the suspended matter in the wastewater coagulate and settle.
Adsorption: Adding adsorbent to wastewater to adsorb pollutants in wastewater.
Ion exchange: the use of ion exchange agent and the pollutants in the wastewater ion exchange, remove pollutants.
Evaporation and concentration: evaporation and concentration of water in wastewater to reduce the volume of wastewater for subsequent treatment.
Biological treatment process: This process utilizes the metabolism of microorganisms to remove pollutants from wastewater. Commonly used biological treatment methods include:
Activated sludge: wastewater is mixed with activated sludge, and the microorganisms in the activated sludge decompose and transform the pollutants in the wastewater under specific environmental conditions.
Anaerobic treatment: Under anaerobic conditions, microorganisms decompose organic matter in wastewater into gases such as methane and carbon dioxide.
Aerobic biological treatment: under aerobic conditions, microorganisms decompose organic matter in wastewater into water and carbon dioxide.
Integrated treatment process: This process combines the physical and chemical treatment processes and biological treatment processes to achieve better treatment results.
Photovoltaic cell production wastewater treatment process selection should be determined according to the specific conditions of the wastewater. In general, acidic waste liquid, alkaline waste liquid can be treated with physical treatment process, fluorine waste liquid, nitrogen waste liquid can be treated with biological treatment process.
Photovoltaic cell production wastewater treatment process should pay attention to the following points:
Select the appropriate treatment process should be based on the specific conditions of the wastewater.
The operating parameters of the treatment process should be strictly controlled to ensure the treatment effect.
The treatment facilities should be maintained on a regular basis to prolong their service life.
The effective treatment of wastewater from photovoltaic cell production is an important measure to protect the environment.