Water Treatment through Electro Chemistry
Electro chlorination – Electro coagulation – Electro flocculation

Concentric Tubular Electrode system

The concentric tubular electrode (CTE) is a design innovation that has significantly improved the Sodium Hypochlorite generation process. In this design, there are two tubes placed one inside the other, and the seawater flows between thetwo tubes.Theouterand the inner tubes act as Anode and Cathode alternately. This design of electrochlorinator has eliminated the problems faced by the otherwise popularParallel Plate design.

Concentric Tubular Electrode for Electrochlorinator

Concentric Tubular Electrode operation

The seawater flows through the annular space between the outer and inner tubes. The flow is horizontal and at a higher velocity. The seawater that flows inside the tubes does not encounter any sharp corners or gaps or areas of low flow, which would otherwise induce deposition of calcium or magnesium salts resulting in the formation of scales.

Sodium Hypochlorite is a strong disinfectant that kills all the pathogens which lead to water borne diseases like cholera, typhoid, paratyphoid etc. Our system also leaves some residual Sodium Hypochlorite in water to prevent bacteria from getting picked up during storage or redistribution.

Advantages of CTE

  • Low in maintenance
  • No acid cleaning or washing
  • Full capacity output
  • Easy production adjustments

We offer capacities ranging from 0.5 kg/hr to 100 kgs/hr in modular design. Larger capacities can be designed as per customer specifications.

We, at Pristine Water along with our associate company Ti Anode also undertake the refurbishment of old Electrolyzers.


  • Off shore & On shore water disinfection
  • Algae removal in Cooling Towers especially where sea water is being used as input
  • Sodium Hypochlorite generators for Ballast tank applications
  • Algae removal from Fire Water especially where sea water is being used as input
  • Water disinfection in the sea water intake fore bay
  • Thermal Power Plant
  • Desalination Plants

Projects executed

S.No. Customer Country Applications Capacity of Hypo Production/day Year of Installation
M/s. Farwest Corrosion Control
USA-OEM Ship Chlorinator 144 Kg / Day [MMO – CTE] 2006 – 2007
2 M/s. Alfa Electro Chlorinator USA-OEM On-shore Platform & Power Plants. 200 Kg / Day [MMO – CTE] 2005 – 2006
3 M/s. Sespi Srl ITALY-OEM Power Plants 240 Kg / Day [MMO – CTE] 2001 – 2002
4 M/s. Electric Chlor USA-OEM Ballast Water Treatment 216 Kg / Day [MMO – CTE] 2001 – 2002
5 GREECE-OEM GREECE-OEM Ship Effluent Treatment 28 Kg / Day [PT – CTE] 2000 – 2001
Tell us about your requirements and our design team will be delighted to create a customized solution for you. Click here.
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