- OBJECTIVE:
To lay down a procedure for chemical preparation of the Sodium hypochlorite, SMBS, Anti scalent & Sodium Hydroxide solutions.
- SCOPE:
This SOP is applicable for chemical preparation of the Sodium hypochlorite, SMBS, Anti scalent & Sodium Hydroxide solutions at {Company Name} {Company Location}.
- RESPONSIBILITY:
- Technical Assistant – Engineering is responsible for follow the procedure.
- Executive– Engineering is responsible to ensure the compliance as per SOP.
- ACCOUNTABILITY:
Engineering Head
Head Quality Assurance
- PROCEDURE:
- CONSUMPTION OF SODIUM HYPO CHLORITE SOLUTION PER DAY:
Total consumption of water per day = Flow rate (m3 /hr) x working hours
For e.g. Hypo chlorite dosing for 3 PPM
Total consumption of water per day = Flow rate (m3 /hr) x working hours
= 2.5 x 24
= 60 KL (Approx.) Required
Hypo chlorite dosing = 3 ppm
Available Hypo chlorite dosing = 11 % ( w/v chlorine)
- PREPARATION OF SODIUM HYPOCHLORITE SOLUTION.
- Take 1.6 liters of Sodium Hypo chlorite having 11% w/v of chlorine in dosing tank and add 50 liters of purified water and mix it properly by SS rod.
- The dosing pump also interlocked with raw water tank and each time it shall be pumped 1.2 liters of solution. Dosing pump put in 1.2 Lts/ hr by adjusting the fine tuning the knob.
- Prepare the solution one time for 24 hours. Use freshly prepared solution every day.
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- PREPARATION OF SMBS SOLUTION:
- Chemical calculation:
For e.g. SMBS dosing for
Flow rate per hour = 2.0 m3/hr
Running hours per day = 24 Hours
Required SMBS dosing = 6 ppm
Quantity of SMBS per day = Flow rate (m3/hr) x ppm x 24
= 2.0 x 6 x 24
= 288 grams
= 300 grams (Approx.)
- Take 300 grams of SMBS powder in the dosing tank and add 50 liters of purified water and dissolve it completely by SS rod.
- Ensure that 24 hours of working and dosing 1.2 liters per hour by adjusting the dosing pump provided for tuning the knob.
- Prepare the solution one time for 24 hours. Use freshly prepared solution every day.
- PREPARATION OF ANTI SCALENT SOLUTION:
- Chemical calculation:
For e.g. if Antiscalent dosing for 5 ppm
Flow rate per hour = 2.0 m3/hr
Running hours per day = 24 Hours Required Antiscalent dosing = 5 ppm
Quantity of Antiscalent per day = Flow rate (m3/hr) x ppm x 24
= 2.0 x 5 x 24
= 240 grams.
= 250 (Approx.)
- Take 250 grams of Antiscalent in the dosing tank and add 50 liters of purified water and mix it properly by SS rod.
- Ensure that 24 hours of working and dosing 1.2 liters per hour by adjusting the dosing pump provided for tuning the knob.
- Prepare the solution one time for 24 hours. Use always freshly prepared solution every day.
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- PREPARATION OF NAOH SOLUTION FOR pH CORRECTION
- Chemical calculation:
For e.g.
Quantity of NaOH per day = Flow rate (m3/hr) x ppm x 24
= 2.2 x 6 x 24
= 316 grams
= 350 (Approx.)
- Take 350 grams of NAOH in the dosing tank and add 50 liters of water of purified water and mix it properly by SS rod.
- Ensure the 24 hours of working and dosing 6.3 liters per hour by adjusting the dosing pump provided for tuning the knob.
- Prepare the solution one time for 24 hours. Use freshly prepared solution every day.
- PREPARATION OF NAOH SOLUTION FOR pH CORRECTION UV OUTLET
- Chemical calculation:
For e.g.
Quantity of NaOH per day = Flow rate (m3/hr) x ppm x 24
= 0.73 x 6 x 24
= 105 grams
= 100 grams. (Approx.)
- Take 100 grams of NAOH in the dosing tank and add 50 liters of water of purified water and mix it properly by SS rod.
- Ensure the 24 hours of working and dosing 1.2 liters per hour by adjusting the dosing pump provided for tuning the knob.
- Prepare the solution one time for 24 hours. Use freshly prepared solution every day. Record the solution details as per Annexure-I.
- PREPARATION OF SODIUM HYPO CHLORITE SOLUTION (FOR UF PERMEATE TANK)
- Chemical calculation:
For e.g.
Total consumption of water per day = Flow rate (m3 /hr) x working hours
= 1.5 x 24
= 36 KL (Approx.) Required Hypo chlorite dosing = 3 ppm
Available Hypo chlorite dosing = 11 %( w/v chlorine)
- Take 1 liter of Sodium Hypo chlorite having 11% w/v of chlorine in dosing tank and add 50 liters of purified water and mix it properly by SS rod.
- The dosing pump also interlocked to the RO-I product water recirculation line to Pre UF permeate tank and each time it shall be pumped 1.2 liters of solution.
- Prepare the solution one time for 24 hours. Use freshly prepared solution every day. Record the solution details as per Annexure –I.
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- REFERENCES:
Not Applicable
- ANNEXURES:
| ANNEXURE No. | TITLE OF ANNEXURE |
| Annexure-I | Solution Preparation Record. |
ENCLOSURES: SOP Training Record.
- DISTRIBUTION:
- Controlled Copy No. 01 Head Quality Assurance
- Controlled Copy No. 02 Head-Engineering
- Master Copy Quality Assurance Department
- ABBREVIATIONS:
PPM : Parts per million
SMBS : Sodium meta bi Sulphite
NaOH : Sodium hydroxide
KL : Kilo liter
SS : Stainless Steel
NaOCl : Sodium Hypochlorite
w/v : Weight / Volume
- REVISION HISTORY:
CHANGE HISTORY LOG
| Revision No. | Details of Changes | Reason for Change | Effective Date |
| 00 | New SOP | Not Applicable | To be written manual |
ANNEXURE-I
SOLUTION PREPARATION RECORD
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