Electrochemical Recirculating Water Treatment System for Cooling Tower

Electrochemical Recirculating Water Treatment System not only has the anti scaling, sterilization, algae killing, corrosion inhibition and other properties that can be achieved by chemical circulating water treatment, but also has functions such as scale removal, scale dissolution, and degradation of organic substances, thereby achieving the effects of increasing concentration ratio, reducing emissions, saving water and electricity in an environmentally friendly manner.



Electrochemical Recirculating Water Treatment System for Cooling Tower

 

 

 

Theoretical Basis

The theoretical basis of electrochemical recirculating water treatment equipment of Purevita is electrolysis theory and polarmolecular theory. Under the action of direct current, the positive and negativeions in the aqueous solution between the positive and negative plates will move to the polar opposite plate,resulting in electron gain and loss reaction (i.e.,discharge reaction).

 

After anti scaling, descaling and preventing new scale, old scale will become loose and soft scale, gradually falls off, and hard scale will be removed.

 

Sterilization and algae removal of organic matter in the water to inhibit the growth of bacteria and algae

 

Corrosion inhibition and corrosion prevention:

Fe2 +20H-=Fe(OH),is oxidized into Fe,0 -nH,0 (red rust),Fe,O -H,O reacts withelectrons to form Fe 0,(magnet), and Fe Owill separate the steel pipe wall from thewater.

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Three Major Problems Recirculating Water

 

  • #
    Scaling
    Hard scale
    Calcium carbonate,calcium phosphate,calcium sulfate,magnesium hydroxide,magnesium silicate,etc.
    Soft scale
    Mud,dust,sand,corrosionproducts,microorganisms,bacteria,algaeandsecretions,general debris,etc.
  • #
    Corrosion
    Microbial corrosion
    Metal corrosion caused by microorganisms
    Corrosion of dissolved oxygen
    Depolarization of dissolved oxygen promotes the microcell reaction of metal surface
    Point corrosion
    Some spot-or hole-like local corrosion occurs on the surface of the metal
    More than 70% of corrosion is caused by accelerated microbial growth
  • #
    Bacteria and algae breeding
    Microbial growth
    The temperature, PH, COD, carbon source, nitrogen source and inorganic salt of cooling water meet the breeding conditions  of microorganisms
    Fungi anaerobes
    Bacteria legionella
    Algae
 
 
 

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Comparative Advantges to Chemical

 

Analyze the specific content Chemical method FEC electrochemical method
Theory Chemical theory Electrolysis theory and
physical adsorption theory
Investment expense The early investment is high,and the
follow-up něeds long-term high investment
Initial investment is high,and there
is no subsequent investment
Equipment maintenance cost Perennial maintenance,high cost No routine maintenance and low cost
Daily operation and maintenance Complex and specialized skills are required Operation and maintenance are very simple
Scale impurity Still in circulating water Remove the scale as a solid
Concentration ratio less than 3 times 6-9 times
Sewage treatment cost Higher Zero
Corrosion of pipes and equipment Strong corrosion No corrosion
Cleaning of circulating water system Regular cleaning is required No regular cleaning
Pollutant discharge Regular discharge is required
whěn the reagent is saturated
There is no chemical,and the
drainage is reduced by 20%-60%
Environmental pollution High secondary pollution No secondary pollution
Whether the scaling system can be treated Unable to handle
(need to disassemble the system for cleaning)
It can restore the pipe blocked

Effect of water treatment
Unstable,and the technical
demand is very high
Stable and real-time monitoring

Specifications
Equipment Model FEC-A3000 FEC-A5000 FEC-A8000 FEC-A10000 FEC-A12000 FEC-A15000
Equipment Dimensions:L*W*H(cm) 267x163x230 267x163x230 322x163x235 322x163x235 377x163x240 435x163x250
Weight(kg) 4000  4000  5000  5000  6000  7000 
Working Pressure(bar)
Design Life of Equipment(years) 20  20  20  20  20  20 
Operating Temperature(℃) 1~95 1~95 1~95 1~95 1~95 1~95
Inlet Diameter(mm) DN150 DN150 DN150 DN150 DN150 DN150
Bypass filtration coefficient 1~3% 1~3% 1~3% 1~3% 1~3% 1~3%
Max recirculating water(m³/h)
(depending on waterquality)
3000  5000  8000  10000  12000  15000 
Average operating power(KW) 7~12
10~16
12~18 14~20
17~25

20~30
DC power supply 800A:24V 1200A:24V 1500A:24V 2000A:24V 2400A:24V 3000A:24V
 

 


Product Tags Electrochemical Recirculating System          Scale Revomal System          Hardness removal device         

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