Brief introduction of pickling wastewater:

       The waste water of pickled vegetables, pickles, and mustard pickles in food processing enterprises has high salt, COD, and NH3-N, and poor biodegradability. Salt water pickling is needed for a long time during the processing, which makes a large amount of pickling wastewater discharged as wastewater. This type of water contains a large amount of organic wastewater, nitrogen, phosphorus and other nutrients due to the complex composition of pickled vegetables.

       If the wastewater is discharged into rivers and lakes without effective treatment, the organic matter will be degraded by microorganisms in the water, which will make the water body appear "eutrophication". The crops on the shore will wither and cause great harm to the ecological environment and biological system, and cause major environmental pollution problem.

       In the treatment of wastewater, a multi-effect evaporator is generally used to treat the salting wastewater, which can effectively recover the salt in the salting wastewater, save energy and avoid secondary pollution.