Continuous casting turbid circulating water treatment system and technology

Abstract

The invention discloses a continuous casting turbid circulating water treatment system and technology. A whirl flow pond, a chemical oil remover, a hot water pond, a ceramic film filter, a cooling tower and a cold water pond are successively arranged according to the treatment sequence of continuous casting turbid circulating water, wherein the whirl flow pond is used for performing solid-liquid separation on the continuous casting turbid circulating water, a lifting pump is arranged between the whirl flow pond and the chemical oil remover, the hot water pond is used for accelerating the solid-water separation in the liquid, a hot water pump is also arranged between the hot water pond and the ceramic film filter, and the water filtered by the ceramic film filter is cooled by the cooling tower and then enters the cold water pond to be stored for being recycled conveniently. The chemical oil remover disclosed by the invention solves the problems of large occupation area of an advection pool and poor oil removing and suspended objects removing effects; the ceramic film filter solves the problems that the treatment effect for the continuous casting turbid circulating water by a quartz sand filter is poor, filter materials need to be replaced every year, and the environmental pollution is serious, so that the system and technology disclosed by the invention overcome the defects in the prior art, and the treatment effect is better.

Description

Technical field [0001] The invention belongs to the field of water treatment, and specifically relates to a continuous casting turbid ring water treatment system and process. Background technique [0002] The turbid annular water of continuous casting is the direct cooling water of continuous casting equipment and products. It mainly refers to the waste water produced in the secondary cooling zone. A large number of nozzles spray water on the steel billet drawn by the drawing roller to further cool and solidify the billet. This water is polluted and contaminated by heat. With iron oxide scale and grease. The treatment method generally adopts solid-liquid separation (precipitation), liquid-liquid separation (deoiling), filtration, cooling, and water quality stabilization measures to achieve recycling. The existing continuous casting turbid circulating water treatment system technology, such as "cyclone + advection sedimentation tank + quartz sand filter", has three major problems...

AI Technical Summary

Problems solved by technology

The existing continuous casting turbidity circulating water treatment system technology, such as "swirl pool + advection sedimentation tank + quartz sand filter" has three major problems: First, the advection sedimentation tank occupies a large area, and the effect of removing oil and suspended solids is poor The second is that the quartz sand filter is not ideal for the treatment of suspended solids and oil in the continuous casting turbid circulating water, and the filter material needs to be replaced every year, which greatly pollutes the environment; the third is the mud discharge and quartz sand filter of the advection sedimentation tank The backwash water enters the cyclone pool for recycling, making the water quality worse and worse

Images