High Efficiency Sodium Ion Exchanger

Abstract

The invention relates to a high-efficiency sodium ion exchanger used in water softening treatment. With the sodium ion exchanger, when a regeneration liquid is fed and water is replaced, finely particulate solids entering a resin layer in a last cycle and broken resin can be removed. The sodium ion exchanger has a cylindrical body, which is divided into an upper chamber and a lower chamber by a porous plate. An air discharge member is arranged at the top of the cylindrical body. A water inlet device and a strong acid resin layer are arranged in the upper chamber. A strong acid resin layer and a water discharge device positioned below the strong acid resin layer are arranged in the lower chamber. The water discharge device comprises a quartz sand pad layer and a dome-shaped porous plate positioned below the quartz sand pad layer. The height of the cleaning space of the upper chamber accounts for 70-100% of the height of the upper chamber strong acid resin layer. When the lower chamber strong acid resin layer is exhausted resin, a resin expansion space is left between the lower chamber strong acid resin and the porous plate with a double-headed water cap, wherein the volume of the resin expansion space accounts for 6.5-7.5% of the volume of the lower chamber strong acid resin when the lower chamber strong acid resin is regenerated resin.

Description

technical field [0001] The invention belongs to softening water treatment equipment, in particular to a high-efficiency sodium ion exchanger. Background technique [0002] Sodium ion exchanger is a softening water equipment that replaces calcium and magnesium ions (ie hardness) in raw water with active group sodium ions in ion exchange resins. It is used in boiler water for factories and enterprises, and water for heating boilers in daily life. And water treatment in some sewage fields, so it is widely used. Sodium floating ion exchanger (referred to as sodium floating bed) water treatment and softening equipment was invented by Germany in the mid-1970s. Its appearance solved the problem of sodium downstream regeneration fixed bed and sodium countercurrent regeneration invented by the United States and Japan in the 1960s. The fixed bed has many defects such as poor effluent quality, high regeneration dosage, and the need for air top pressure regeneration operation. In parti...

AI Technical Summary

Problems solved by technology

However, there are still some defects in actual operation. For example, the particulate solids and broken fine resin that entered the resin layer in the previous cycle cannot be removed during each regeneration, and it needs to run for about 20 days to move the resin outside the body for a large Backwashing; in addition, more resin traps and inverted U-pipes need to be installed. In order to prevent resin chaotic layers, it cannot be started, stopped and operated arbitrarily during water production. quantity

Images