Water Treatment / Reduction of Environmental Burdens Chlorine Engineers co., ltd.

  1. Home
  2. Products
  3. Electrolysis
  4. SRS (Sulphate Removal System)

SRS (Sulphate Removal System)

About SRS. (Sulphate Removel System)

Photo: SRS(Sulphate Removal System)

SRS provides a technology of removal of glauber's salt using molecule colander membrane.

SRS is a facility to remove glauber's salt from salt water and is used in an ion exchange membrane of an electrolyzer plant. Special coating is applied to the surface of the molecule colander membrane to selectively separate only glauber's salt and to get high density glauber's salt. Since no industrial waste such as mud are by-products, it is an effective way to protect the natural environment.

Feature of SRS

  • Without chemical reaction (without using chemical agents)
  • No solid industrial waste by-products
  • Easy operation control and maintenance
  • Treatment and facility are simple
  • Facility space is compact
  • The density of glauber's salt is high in purged Brine solution and the running cost is low.

Structure of SRS

fig1: Structure of SRS
fig2: Structure of SRS

Equipments consists of the SRS unit include the pump and housing only, and elements are embedded in the housing. The separation feature of the membrane is designed to separate glauber's salt, force combination of repulsion over the hole diameter, and multivalent ionization (SO42-). Glauber's salt is selectively separated and condensed while the supplied salt water goes through the housing. Low density glauber's Brine solution permeating the membrane is reused as collected salt water.

Process of SRS

fig: Process of SRS

A portion of dechlorinated salt water is branched and supplied to SRS.

Purged Brine solution with high density of glauber's salt is sent to the drain and permeated salt water is collected in the dissolution line.

Cost Comparison

For SRS, the amount of drain water and loss of salt is smaller than the purge method and the mud process of the barium method is not required. So you can reduce the running cost substantially.

Cost of transmutation per ton of caustic soda

The cost of element, labor cost for maintenance, consumable goods, etc. are not included in the above.
Item Unit BaCl2 Purge SRS
Original salt 6yen/kg - 566.3 40.6
BaCl2-2H2O 50yen/kg 259.2 - -
Industrial water 30yen/m3 - 9.8 1
Electric power 9yen/kwh - - 20.4
Mud treatment 12,000yen/ton 178.3 - -
Total cost of transmutation 437.5 576.1 62

Sales Representative

SRS(Sulphate Removal System) is produced by Aker Chemetics in Canda and Chlorine Engineers sells the units and provides technical services in Japan.

return top page