Resin cleaning pollutants

15% HCl cation resin cleaner

1. Prepared regenerant

2. The resin bed in the liquid discharge

3. Into about 2BV of 15% HCl solution, if necessary, into the air mixing drum

4. At least soak 3h

5. The liquid discharge

6. With demineralization of water until the effluent water in the free ion concentration and the same as far

 

15% NaOH cleaning cation resin

1. Prepared regenerant

2. Into 2BV of 0.5% NaOH solution the resin into a Na-type resin

3. Into about 2BV of 15% NaOH regeneration solution, if necessary, into the air mixing drum

4. At least soak 3h

5. The liquid discharge

6. With demineralization of water until the outflow of liquid caustic soda is less than 1meq / l am today

7. Use twice the amount of recycled resin acid

 

15% HCl solution to clean anion resin

1. Into 2BV 0.5% HCl solution will be transformed into Cl resin resin

2. About 2BV15% of the HCl into the solution, if necessary, into the air mixing drum

3. At least soak 3h

4. The liquid discharge

5. With demineralization of water until the effluent and influent concentration of free ions the same as far

6. Use twice the amount of recycled resin base

 

Saline alkaline anion resin cleaning

1. Cleaning solution preparation

10% NaCl solution (about 100g/lNaCl) +2% NaOH (about a liter in 20g100% of NaOH or about 45g 45% of NaOH), if necessary, heated to 45 ℃ (styrene-based thermal solution can not be used for strong Base II anion resin and acrylic anion resin)

2. About 2BV cleaning fluid injection, if necessary, into the air mixing drum

3. At least soak 3h

4. The liquid discharge

5. With demineralization of water until the outflow of liquid caustic soda is less than 1meq / l am today

6. Use twice the amount of recycled resin base

 

Cation exchange resin sterilization

Chloramine disinfection: (N-Cl-4-toluene - SD sodium): 260g/m3

Sodium dichloroisocyanurate: 130 g/m3

Peracetic acid: CH3-CO3-H + H2OàCH3-CO2-H + H2O2 :1-2BV .0.2%

2 dimethyl methane: CH3-O-CO-O-CO-O-CH3 + H2Oà2CH3OH +2 CO2: 1000 g/m3

Formaldehyde H2CO: 1.5BV.1%

Hydroxide (NaOH, KOH) :2-3BV, 4%

 

Work steps:

1. Air cleaning equipment filter layer

2. Backwash

3. Row of dry ion exchange column

4. Counter the disinfectant into the ion exchange column

5. 5-10h after disinfectant drained (acetic acid disinfectant over time is one hour)

6. Reflux into the water

7. Anti-washing, leaching out the chemicals

8. Regeneration

Anion exchange resin sterilization

Peracetic acid: CH3-CO3-H + H2OàCH3-CO2-H + H2O2 :1-2BV .0.2%

Formaldehyde H2CO: 1.5BV.1%

Hydroxide (NaOH, KOH) :2-3BV, 4%

 

Work steps:

(Peracetic acid, and formaldehyde method)

1. Air cleaning equipment filter layer

2. Backwash

3. Row of dry ion exchange column

4. Counter the disinfectant into the ion exchange column

5. 5-10h after disinfectant drained (acetic acid disinfectant over time is one hour)

6. Reflux into the water

7. Anti-washing, leaching out the chemicals

8. Regeneration

Hydroxide method:

1. Draining renewable filtration column

2. Repeat steps 4-7 above