The laboratory wastewater treatment system uses a multi unit combination process to convert complex wastewater into standard discharge water bodies. Its core process includes three stages: pretreatment, biochemical treatment, and deep purification.
The pre-treatment stage achieves water quality balance through physical interception and chemical regulation. The wastewater first enters the collection tank, and after removing large suspended particles through a grid, pH neutralization is completed in the regulating tank to create stable conditions for subsequent treatment. For heavy metal pollutants, the system adopts a chemical precipitation method, which forms insoluble precipitates by adding heavy metal capture agents, and then separates them through a sedimentation tank.
The biochemical treatment stage utilizes microbial metabolism to decompose organic pollutants. The activated sludge process converts organic matter into carbon dioxide and water through the aerobic microbial community in the aeration tank; The biofilm rule utilizes microbial membranes attached to the surface of fillers to achieve synchronous nitrification denitrification and nitrogen removal. This stage can effectively reduce indicators such as COD and BOD, and achieve preliminary purification standards for water quality.
The deep purification stage adopts multi-stage barrier technology to ensure the safety of effluent. Physical filtration units such as sand filtration and carbon filtration can intercept particles larger than 0.5 microns; Membrane separation technologies such as ultrafiltration and nanofiltration can remove dissolved organic matter and microorganisms; UV disinfection or chlorine disinfection can kill pathogenic microorganisms. For special pollutants, the system can integrate advanced oxidation processes (such as ozone oxidation) or microelectrolysis technology to achieve deep mineralization of recalcitrant organic matter.
Modern laboratory wastewater treatment equipment is showing a trend towards integration and intelligence. The integrated equipment modularizes and combines various processing units, reducing the footprint by more than 40% compared to traditional processes; The intelligent control system can monitor water quality parameters in real time, automatically adjust the dosage of chemicals and aeration intensity, ensuring treatment efficiency while reducing energy consumption. Some devices are also equipped with remote monitoring functions to achieve unmanned operation.