Heavy metal wastewater treatment system and method

Abstract

The invention discloses a heavy metal wastewater treatment system which comprises a system control unit, a system state detection unit, a pretreatment system, an ultrafiltration system and an NF system. The pretreatment system comprises an adjusting tank, a floatation tank, a sand filter, a carbon filter and a heavy metal adsorber; the floatation tank is provided with a backflow dissolved gas assembly; the ultrafiltration system comprises an ultrafiltration device and ultrafiltrationequipment , the ultrafiltration equipment is composed of a plurality of ultrafiltration tubes, and a backwashing assembly is arranged in the ultrafiltration system; the NF system comprises an RO booster pump, a security filter, RO equipment and a cleaning assembly; the system state detection unit comprises a pressure gage, a flowmeter, a conductivity meter, a PH value detector and a temperature detector; the system control unit comprises a processor module and a control terminal assembly; the control terminal assembly comprises an electromagnetic valve, a pneumatic butterfly valve and an electric butterfly valve; the processor module can adjust the flow quantity and the flow direction of wastewater in the wastewater treatment system. By means of multiple filter devices, wastewater can be filtered step by step, and a good filtering effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, more specifically, it relates to a heavy metal wastewater treatment system and method. Background technique [0002] In the electroplating industry, a lot of industrial wastewater containing a large amount of heavy metal ions is often produced. If the wastewater is not treated and discharged, it will seriously pollute the environment around the factory. For this reason, there are many waste water treatments in the prior art, especially for the treatment system of heavy metal waste water, for example, the Chinese patent whose patent publication number is CN105016510A discloses a set of waste water treatment system for waste water containing heavy metal, the main method of the above-mentioned system For precipitation plus adsorption, although the structure is simple, the degree of sewage treatment that can be achieved is not satisfactory, and the quality of the treated water is not good. ...

AI Technical Summary

Problems solved by technology

[0003] In view of the incomplete treatment of wastewater containing heavy metals in practical applications, the first object of the present invention is to provide a heavy metal wastewater treatment system, and the second object is to provide a wastewater treatment method based on the above system

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