ProMinent GmbH

- Model V - Electrolysis System


Output of 100 – 3,500 g ultra-pure active chlorine per hour. Generate ultra-pure active chlorine using the vacuum method with electrolysis system CHLORINSITU V. Suited to applications for metering hypochlorous acid and simultaneously correcting the pH value.

From cooking salt chlorine, hydrogen and sodium hydroxide are made. Directly on site.

Electrolysis systems of type CHLORINSITU V generate ultra-pure active chlorine in a vacuum process. A saturated solution of sodium chloride is produced in a salt dissolving tank, included in the scope of delivery, and this solution is then electrolysed in a diaphragm cell. Chloride-free sodium hydroxide and hydrogen are produced in the cathode chamber, while ultra-pure chlorine gas and dilute residual brine are produced in the anode chamber, separated by the diaphragm from the cathode chamber. The active chlorine produced is suctioned off through an injector (contained in the scope of delivery) and fully dissolved as hypochlorous acid in the water being treated (through a bypass). The superchlorinated water is then distributed throughout the various pools via one or more proportionately controllable motor driven ball valves. The vacuum is kept stable by a single frequency-controlled booster pump. This permits significant savings in terms of energy. The chloride-free sodium hydroxide is stored temporarily and can be used forpH value correction. A standard diaphragm metering pump is first used to correct the base pH (pH 6.8 – 7) of the superchlorinated water. The fine correction of the pH value is provided via additional alkali metering pumps for each circuit or point of injection. These are connected directly to the system's control through an external pH value controller. The hydrogen produced is diluted with fresh air through an ATEX 95-approved fan and discharged safely. The diluted residual brine is fully discarded. To this end, the diluted brine is strongly diluted with softened water, neutralised by the addition of sodium hydroxide and disposed of in the sewer. All residual chloride and chlorate are thus disposed of and are not mixed with the process water. Electrolysis systems of type CHLORINSITU V can thus be compared with pure chlorine gas in terms of their oxidation strength and chloride / chlorate content in the process water. The salt-dissolving water comes from a softener integrated in the system, thereby preventing the formation of lime deposits and ensuring the long service life of the diaphragm cell. The efficiency of electrolysis is constantly monitored by various flow meters, the addition of water depending on the sodium hydroxide production and the base pH correction.

  • Chlorination and pH adjustment with a single system
  • Exceedingly low chloride and chlorate content
  • Production and metering of ultra-pure hypochlorous acid without temporary storage
  • Safe system control with remote diagnosis by Remote Control Engineer
  • Excellent service life of the diaphragm cells, thanks to constant vacuum
  • A frequency-controlled circulation pump maintains the vacuum constant in the enclosed anode area

Technical details
  • Modern PLC with large illuminated display
  • Integrated Remote Control Engineer for remote diagnosis and troubleshooting
  • Chlorine metering and pH value correction controlled via contact inputs
  • Analogue input (optional)
  • MOD bus or PROFIBUS (optional)
  • Several points of injection (optional)
  • Multiple booster pumps (optional) can be used for different water qualities (e.g. brine and freshwater pools)

Power supply 3 x 400 V (VAC/3P/N/PE/50 Hz)

Scope of delivery:

Electrolysis systems of type Chlorinsitu V are ready mounted, wired for use, on a powder coated stainless steel frame with a Programmable Logic Controller (PLC) in the control cabinet, Remote Control Engineer for remote diagnosis and troubleshooting, integral water softening unit, diaphragm electrolysis cells, ATEX-95-compliant bleed system and separate salt dissolving tank with level monitoring. The scope of delivery also includes a frequency-controlled central injector system matched to the system to meter active chlorine and sodium hydroxide for pH correction and a single booster pump. A chlorine gas warning unit and automatic monitoring of water hardness downstream of the softening system come as standard with systems producing more than 600 g/h.

  • Potable water
  • Waste water
  • Process water
  • Swimming pool water
  • Cooling tower