Industrial wastewater ultrasonic cooperative treatment and ultrasonic evaporative crystallization integrated technology and device

Abstract

The invention relates to an industrial wastewater ultrasonic cooperative treatment and ultrasonic evaporative crystallization integrated technology which comprises the following steps of (1) ultrasonic cooperative wastewater pretreatment: performing preliminary flocculating treatment, deposition, ultrasonic treatment, catalyst organic matter decomposing, tail ozone sterilization treatment and outlet ultraviolet treatment; (2) forced cyclic ultrasonic evaporative crystallization: performing evaporation and separation operations in an ultrasonic evaporator, condensing secondary steam in a condenser, putting phase-changed condensed water into a condensed water storage tank, and cooling and crystallizing complete liquid by a crystallizer. The invention further relates to an integrated device which consists of an ultrasonic cooperative wastewater pretreatment unit and a forced cyclic ultrasonic evaporative crystallization unit. The technology and the device which are disclosed by the invention have the advantages of reasonable structural design, novel technical process, unique treatment mode, high industrial wastewater treatment efficiency, suppression of scaling of evaporative crystallization equipment and the like.

Description

technical field [0001] The invention belongs to the field of wastewater treatment and evaporation crystallization, in particular to an integrated process and device for ultrasonic cooperative treatment of industrial wastewater and ultrasonic evaporation crystallization. Background technique [0002] Ultrasonic research has been carried out in the fields of food, medical hygiene and welding inspection, such as ultrasonic extraction, ultrasonic sterilization, ultrasonic flaw detection and so on. In recent years, the research on ultrasonic descaling has been widely concerned by scholars at home and abroad, and the research mainly focuses on the ultrasonic descaling process. [0003] Ultrasonic descaling In the mechanism research of the papermaking black liquor evaporator, it was found that the ultrasonic descaling effect was obvious, and the heat transfer coefficient was improved. At the same time, the mechanism of the influence of ultrasonic waves on the formation of calcium c...

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Problems solved by technology

[0004] The existing research is mainly to use the ultrasonic transducer as an external auxiliary component, and has not realized the organic combination with the process and evaporation process equipment in the pretreatment, which creates a bottleneck for the in-depth study of ultrasonic evaporation

At the same time, the efficiency of a single ozone, photocatalysis and ultraviolet wastewater treatment process is low, and the input cost is high, which is not conducive to long-term industrial production

[0005] Although ultrasonic waves are also used as a pretreatment method in the wastewater treatment process, the form is relatively single, which is not conducive to the role of ultrasonic waves; and the scaling of the wastewater treated by the existing process in the evaporation equipment during the evaporation and crystallization stage has always been It has always been a difficult problem in evaporation crystallization

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