Industrial wastewater recycling processing system

Abstract

The invention relates to an industrial wastewater recycling processing system which comprises a filtering device, a membrane concentrating device and an evaporating device, wherein the filtering device comprises an ultrafiltration water supply pump, a bag filter and a security filter, and the membrane concentrating device comprises an ultrafiltration membrane assembly, a reverse-osmosis water supply pump, a precise filter, a primary high-pressure pump, a secondary high-pressure pump, a reverse-osmosis membrane assembly and a cleaning pump; and the evaporating device comprises a condenser, a single-effect evaporator, a two-effect evaporator, a water tank, a concentrated solution pump and an evaporation water supply pump. The invention thoroughly changes the processing method of electroplating wastewater and has the advantages of good water quality of membrane outlet water, small occupied area of equipment, no need of attendance in operation and convenient use; and the invention does not use a chemical agent, conforms to the requirements of environment-friendly and clean electroplating, can be used for recycling useful metal while processing electroplated rinsing wastewater, and not only can create more economic benefit, but also can bring social benefit and environmental benefit, reduce the pollution, save the resources, protect the environment and benefit the mankind.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to an industrial waste water reuse treatment system capable of treating electroplating rinsing waste water for production, recovering heavy metals in waste water, and reducing waste water discharge. Background technique [0002] The electroplating cleaning water in the electroplating factory contains a lot of heavy metal ions. If it is discharged without treatment or the treatment is not up to standard, the wastewater will pollute the water source and the environment, which will not only endanger human health, but also cause the deterioration of the ecological environment. On the other hand, electroplating wastewater contains valuable substances such as precious metals or heavy metals. If recycled, it can not only reduce pollution, but also reduce production costs and save water resources. [0003] At present, the existing electroplating wastewater treatment process generally adds var...

AI Technical Summary

Problems solved by technology

This kind of treatment process cannot recover valuable substances such as precious metals in wastewater, and the water quality after treatment is unstable, and heavy metal substances are prone to exceed the standard. If the sludge containing heavy metals is not properly treated, it may cause secondary pollution.

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