Tail end curing system applied to zero discharge of wastewater

Abstract

The invention relates to a tail end curing system applied to zero discharge of wastewater. A wastewater buffer tank 1 is connected with a wastewater atomization device 3 through a wastewater deliverypump 2. Wastewater is pressurized and delivered to the wastewater atomization device from the wastewater buffer tank through the wastewater delivery pump and is atomized under the assistance of compressed air, the atomized wastewater is directly sprayed into a drying evaporation tower 4, and the atomized wastewater is evaporated by utilizing waste heat of flue gas. A flue gas inlet is formed in the top of the drying evaporation tower and connected with a high-temperature flue in front of an air pre-heater, a flue gas outlet is located in the bottom of the drying evaporation tower and connectedwith a low-temperature flue behind the air pre-heater, a wastewater inlet is formed in the lower portion of the interior of the high-temperature flue gas inlet, a wastewater atomization device is connected to the side of the wastewater inlet, and an outlet of an air compressor is connected above the atomization device. According to the invention, the tail end curing system after concentration treatment of the wastewater treatment system is optimized, and the prior art is organized and integrated, so that the defects of huge equipment, large occupied area, complex operation and the like of theexisting tail end curing system are well overcome.

Description

technical field [0001] The invention relates to the technical field of terminal curing, in particular to a terminal curing system applied to zero discharge of waste water. Background technique [0002] The terminal wastewater is concentrated and reduced, and then solidified, and then all recycled. No waste liquid is discharged from the factory, and the goal of zero discharge of wastewater is truly achieved. Its main technologies include: evaporative crystallization, main flue evaporative drying, bypass evaporative drying, etc. [0003] The main feature of evaporation and crystallization treatment technology is to use steam or electric energy to heat, evaporate and concentrate wastewater to saturation, so that soluble salts can be crystallized and precipitated. It is technically feasible to use evaporative crystallization for terminal solidification treatment, but the crystallized salt of evaporative crystallization is miscellaneous salt, and the problem of its treatment and...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems existing in the prior art, the present invention provides a terminal curing system applied to zero discharge of wastewater, optimizes the zero discharge system of wastewater, and changes the original mechanical rotary atomization method to compressed air assisted atomization, which is very easy It solves the problems of the original mechanical rotary atomization equipment being expensive and the drying evaporation tower occupying a large area.

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