The selection of laboratory wastewater treatment equipment should be based on the characteristics of laboratory wastewater, treatment requirements, and safety regulations to ensure efficient operation of the equipment and ensure personnel safety. The following is a guide for matching key parameters:

Processing capacity and peak flow rate

Determine the treatment capacity based on the laboratory scale, experimental type, and daily wastewater production. For example, small laboratories can choose equipment with a capacity of 0.5-2 tons per day, while large laboratories need to be matched with models with a capacity of 5 tons per day or more. At the same time, peak flow should be considered, and it is recommended to leave 20% -30% redundancy in equipment processing capacity to cope with sudden wastewater discharge.

Water quality characteristics and process adaptation

For wastewater containing heavy metals, equipment equipped with chemical precipitation, ion exchange, or chelating resin adsorption processes should be selected; For high concentration organic wastewater, biological treatment (such as MBR membrane bioreactor) or advanced oxidation (such as Fenton oxidation) technology should be used. For example, a pharmaceutical company reduced the concentration of Cr ⁶⁺ from 50mg/L to below 0.1mg/L through the "reduction precipitation filtration" process.

Material and Corrosion Resistance

When in contact with strong acid and alkali wastewater, the equipment body should be made of 316L stainless steel or PP material, and PVDF or ceramic lining technology should be used for pipelines and valves. For example, a university laboratory successfully resisted the corrosion of wastewater with pH 2-12 by using stainless steel equipment.

Automation and Security Protection

Priority should be given to equipment with PLC control system, automatic dosing, online monitoring (pH, ORP, COD), and remote monitoring functions. Safety protection should be equipped with leakage protection, overload alarm, and emergency collection pool to ensure that the equipment automatically shuts down and prevents leakage when power or water is cut off.

Floor area and maintenance convenience

Due to limited laboratory space, it is recommended to choose modular and compact equipment. For example, a laboratory adopts an integrated processing device with dimensions ≤ L1200 × D750 × H1300mm, and is equipped with a quick opening filtration device for regular cleaning of membrane components and replacement of activated carbon.