Industrial waste water treatment device after softening treatment and process thereof

Abstract

The invention belongs to the technical field of industrial waste water treatment, and specifically provides an industrial waste water treatment device after softening treatment. The device comprises a PLC control system and a primary OCNF processing system, a secondary OCNF processing system and a primary OCRO processing system that are respectively connected to the PLC control system. The primary OCNF processing system, the secondary OCNF processing system and the primary OCRO processing system are sequentially communicated. The device further comprises a membrane cleaning system, wherein the membrane cleaning system is respectively connected to the primary OCNF processing system, the secondary OCNF processing system and the primary OCRO processing system. The waste water treatment process is adopted, so that the pure water yield rate is high, and chemicals do not need to carry out precipitation treatment; the filtration flux is large and low in cost; the structure design is reasonable, the device operation is stable and has high pure water production capability; and the device occupies small area, and is good in treatment effect and high in efficiency.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and in particular relates to softened industrial wastewater treatment equipment and a process thereof. Background technique [0002] Heavy metal wastewater from electroplating industry, circuit board industry, automobile industry or other industries applied to electroplating process, metal ion types include conventional heavy metals (Cd, Cu, Cr, Ni, Pb, Zn, etc.), and also include some other non-heavy metals Ionic wastewater such as As, Ba, Mo, Fe, Al, Sn, Ra, etc. The common feature of these metals or heavy metals is that they can form precipitates by adding some chemicals. The traditional wastewater treatment method adopts the chemical precipitation method. This treatment method needs to set up a sedimentation tank. Considering that the sedimentation effluent cannot completely remove the suspended solids SS and heavy metal suspended solids in the water quality, and afte...

AI Technical Summary

Problems solved by technology

Hollow fiber membrane has the advantages of smaller equipment footprint and low price, but the biggest problem with fiber membrane technology is the engineering risk caused by broken filaments and membrane clogging, especially the problem of membrane clogging, which makes it suitable for heavy metal wastewater with high solid concentration. During processing, the frequency of cleaning and downtime for maintenance is too high to be of practical value

Tubular microfiltration membrane technology is relatively mature. Tubular microfiltration membranes use membrane elements that are thicker than fiber membranes, but there are also problems of high cost, short life, and fouling and scaling.

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