Treatment system and technique for derived wastewater generated by incineration fly ash pretreatment

Abstract

The invention relates to a treatment system and technique for derived wastewater generated by incineration fly ash pretreatment. The invention aims to overcome the defects in the prior art, and provides a treatment system and technique for derived wastewater generated by incineration fly ash pretreatment. The scheme is as follows: the treatment system derived wastewater generated by incineration fly ash pretreatment comprises a floatation tank, a membrane treatment system and a triple-effect evaporation desalting system, wherein a water outlet of the floatation tank is connected with a water inlet of the membrane treatment system; a water producing outlet of the membrane treatment system is connected with an external clean water tank and also connected with the triple-effect evaporation desalting system, and is used for supplying cooling water to the triple-effect evaporation desalting system; a wastewater port of the membrane treatment system is connected with a water inlet of the triple-effect evaporation desalting system; and a condensation water outlet of the triple-effect evaporation desalting system is connected with the external clean water tank. The system and technique are suitable for the technical field of treatment of derived wastewater generated by hazardous waste pretreatment in the field of environmental protection.

Description

technical field [0001] The invention belongs to the technical field of hazardous waste pretreatment derivative wastewater treatment in the field of environmental protection, and particularly relates to the recycling of pollutants and salt in the treatment of derivative wastewater, so that the wastewater can be recycled after reaching the standard, specifically a derivative produced by incineration fly ash pretreatment. Wastewater treatment systems and processes. Background technique [0002] With the rapid development of solid waste incineration, the output of incineration fly ash is increasing. The best way to make harmless and resourceful utilization of incineration fly ash at home and abroad is the co-processing of cement kilns. However, because fly ash contains a large amount of harmful ingredients in cement production, if it is directly disposed of, the production will not be able to proceed normally. It seriously affects the quality of cement products, and it needs to...

AI Technical Summary

Problems solved by technology

The best way to make harmless and resourceful utilization of incineration fly ash at home and abroad is the co-processing of cement kilns. However, because fly ash contains a large amount of harmful ingredients in cement production, if it is directly disposed of, the production will not be able to proceed normally. Seriously affect the quality of cement products, it needs to be pretreated before it can be used safely

However, during the pretreatment of fly ash, a large amount of derivative wastewater containing high salt content, low organic matter concentration, and high suspended solids will be produced. If it is directly discharged, it will cause environmental pollution, and will increase the cost of fly ash pretreatment, resulting in waste of water resources.

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