Ion exchange demineralization plants

5 m3/h IX- demi plant

Lenntech designs and build tailor-made IX demi-plants to produce demi-water from groundwater, tapwater or RO permeate.

General Design data:

Cationic operating capacity*	1 eq/L
Anionic operating capacity*	0,5 eq/L
Water TDS max.	500 ppm
Regeneration cycle	Small scale: 24 hrs / column
	Large scale: 6 hrs / column
No. cationic column	Small scale: 1
	Large scale: 2
No. anionic column	Small scale: 1
	Large scale: 2
Water outlet with co-current regeneration*	< 30 uS/cm
Water outlet with counter -current regeneration*	< 5 uS/cm
Recovery at 500 ppm TDS	76%

*Indicative values for feed tap water at TDS = 500 ppm

Small-scale IX demi plants data for 500 mg/L TDS tap water*:

Flows (L/h)	100	200	500	1000
Bed depth (m)	0.8	0.8	0.8	0.8
SAC resin volume (L)	25	50	125	250
SBA resin volume (L)	50	100	250	500
SAC column diameter (mm)	200	285	450	630
SBA column diameter (mm)	285	400	630	900
Co-current Reg. HCl 33% (kg / reg.)	6	12	30	60
Co-current Reg. NaOH 50% (kg / reg.)	8	16	40	80
Counter-current Reg. HCL 33% (kg / reg.)	3	6	15	30
Counter-current Reg. NaOH 50% (kg / reg.)	4	8	20	40

Large-scale IX demi plants data for 500 mg/L TDS tap water:

Flows (m3/h)	5	10	20	50	70
Bed depth (m)	0.8	0.8	0.8	1	1.2
SAC resin volume (L) / column	315	630	1260	3150	4410
SBA resin volume (L)	630	1260	2520	6300	8820
SAC column diameter (m)	0.7	1	1.4	2	2.2
SBA column diameter (m)	1	1.4	2	2.8	3.0
Co-current Reg. HCl 33% (kg / reg.)	75	150	300	770	1070
Co-current Reg. NaOH 50% (kg / reg.)	100	200	400	1000	1410
Counter-current Reg. HCL 33% (kg / reg.)	37,5	75	150	385	535
Counter-current Reg. NaOH 50% (kg / reg.)	50	100	200	500	705

Our Ion Exchange plants include:

- Feed pump (optional)
- Cationic column
- CO2 scrubber (optional)
- Anionic column
- Conductivity probe
- Regeneration station with
- Acid dosing station
- Caustic dosing station
- Dilution pump
- Electrical valves and fittings
- Control panel

Regeneration is performed on conductivity signal or water volume

Ion exchange plants

Ion exchange resin