Efficient separation and clarification treatment device for sintering flue gas desulfurization wastewater

Abstract

The invention belongs to the technical field of sintering flue gas desulfurization wastewater treatment and cyclic utilization and relates to an efficient separation and clarification treatment devicefor sintering flue gas desulfurization wastewater. The separation and clarification treatment device comprises an outer cylinder, a central cylinder and a lifting assembly, which are coaxially arranged in a sleeving mode from outside to inside with the vertical direction as the central axis, and the lower end of the lifting assembly divides the interior of the outer cylinder into a water distribution area and a sedimentation area which are controllable in on-off; the wastewater enters the lifting assembly, overflows from an overflow port of the lifting assembly and into the central cylinder,flows through the central cylinder and enters the water distribution area of the outer cylinder; then the wastewater flows through the water distribution area, is filtered by the inclined pipe fillerand overflows and is discharged from a water outlet of the outer cylinder. Large-particle suspended matters are settled to the bottom of the settling area to be removed. The treatment capacity is 3-5times that of a horizontal sedimentation tank and 2-3 times that of an accelerated clarification tank, the application range is wide, the treatment effect is good, and the occupied area is small.

Description

technical field [0001] The invention belongs to the technical field of sintering flue gas desulfurization wastewater treatment and recycling, and in particular relates to a high-efficiency separation and clarification treatment device for sintering flue gas desulfurization wastewater and a pretreatment system for sintering flue gas desulfurization wastewater. Background technique [0002] The application of sintering flue gas wet desulfurization (limestone / gypsum method) technology is the main means of controlling sulfide emissions in power plants and iron and steel industries. 2 ) important way of emissions. In the process of wet desulfurization of sintering flue gas (limestone / gypsum method), heavy metal elements, fluoride ions and chloride ions will be enriched. , Fluoride ion concentration exceeds the specified value and to ensure the quality of gypsum, part of the filtrate water must be discharged from the system as desulfurization wastewater. The wastewater mainly com...

AI Technical Summary

Problems solved by technology

The traditional clarifier is mainly equipped with diversion devices to reduce the rising flow rate and prolong the residence time, but there are defects such as too large clarifier volume, poor filtering effect, high failure rate, and high overall cost of wastewater treatment equipment.

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