Process for DE CHLORINATION :::
USE Sodium Thiosulfate solution, Then transfer the solution with a funnel to the gallon jug. Top off the jug to make a full gallon of stock solution.
- Use Counter Sample, Add two drops of the RXSOL Sodium ThioSulfate solution per one gallon of the water to be treated.
- One gallon can treat 37,850 gallons or more. Over-dosage is virtually impossible.
http://rxmarine.com/SodiumThiosulphateSolution-Manufacturer-Supplier-indiaUAEoman
Sodium Thiosulphate Solution Manufacturer and supplier in GULF Dubai, Sharjah, Ajman, Abudhabi, Fujairah United Arab Emirates
Sodium Thiosulphate Solution Manufacturer and supplier in India Mumbai, Visakhapatnam, Chennai, Kakinada, Kolkata, Haldia, Paradip, Kandla Gandhidham, Mundra, Hazira Surat, Ennore Port
Sodium Thiosulphate Solution Manufacturer and supplier in Oman Sohar, Muscat, Ruwi, Ghala, Barka Oman
Process for DE CHLORINATION :::
USE Sodium Thiosulfate solution, Then transfer the solution with a funnel to the gallon jug. Top off the jug to make a full gallon of stock solution.
- Use Counter Sample, Add two drops of the RXSOL Sodium ThioSulfate solution per one gallon of the water to be treated.
- One gallon can treat 37,850 gallons or more. Over-dosage is virtually impossible.
http://rxmarine.com/SodiumThiosulphateSolution-Manufacturer-Supplier-indiaUAEoman
Sodium Thiosulphate Solution Manufacturer and supplier in GULF Dubai, Sharjah, Ajman, Abudhabi, Fujairah United Arab Emirates
Sodium Thiosulphate Solution Manufacturer and supplier in India Mumbai, Visakhapatnam, Chennai, Kakinada, Kolkata, Haldia, Paradip, Kandla Gandhidham, Mundra, Hazira Surat, Ennore Port
Sodium Thiosulphate Solution Manufacturer and supplier in Oman Sohar, Muscat, Ruwi, Ghala, Barka Oman
Na2S2O3xH2 also used for dechlorination. Chlorine residuals can be dechlorinated by the addition of sodium thiosulfate. The amount of dechlorinating agent to be used is specified as 0.1 ml of a 10 percent solution for a 125 ml sample.
Sodium thiosulfate Liquid solution. RX MARINE INTERNATIONAL is popular chemicals solvent powder supplier in Kolkata, Mumbai, Kandla, Chennai, Visakhapatnam, Fujairah, Dubai, Sharjah, Abu Dhabi.
We are keeping ready stock od sodium thiosulfate in various size and packing of 25, 50, 210 Ltr and 1000 Ltr IBC Tanks.
Email for sodium thiosulfate requirement - INDIA : mail@rxmarine.com
For Gulf requirement mail us at : mail@dubichem.com
Sodium Sulfite reacts with hot water, steam or acids to produce corrosive material, Which is damaging PRECIOUS METAL PARTS. Scientifically its corrosiveness can be controlled by using CORROSION INHIBITOR and Catalyst.
RXSOL MARINE RESEARCH CENTRE Developed sodium sulfite based compound to neutralize CHLORINE content.
Sodium Sulphite (sulfite) with Catalyst Powder
Enviro Guard Sulfite
Email us to GET discounted price for MARINE CHEMICALS Ballast Water Treatment Chemicals : marinechemical@gmail.com
SODIUM SULPHATE chemically called Sodium Metabisulphite in drilling fluid most commonly used to remove oxygen ions Recommended Treatment range from (0.5-2.0 lb/bbl).
Reaction :
1> When Sodium Meta-Bisulfite Reacts with water releases sulfur dioxide (SO2).
Released sulfur dioxide SO2 however makes the water a strong Reducing Agent.
2> Sodium metabisulfite releases sulfur dioxide in contact with strong acids
Na2S2O5 + 2 HCl → 2 NaCl + H2O + 2 SO2
3> On heating it releases sulfur dioxide, leaving sodium oxide behind.
Na2S2O5 → Na2O + 2 SO2
Sodium Metabisulfite manufacturer, exporter and supplier in India, Kuwait, UAE Middle East, Oman, Canada. Email us to get factory sale discounted price... mail@rxmarine.com
Why RO Membrane must be dechlorinated?
Dechlorination
When RO or NF membrane is used in the RO/NF process, the feed must be dechlorinated to prevent oxidation of the membrane. RO membranes have some chlorine tolerance before noticeable loss of salt rejection is observed. The first sign of chlorine attack on RO/NF membrane is loss of membrane flux followed by an increase in membrane flux and salt passage. Eventual degradation may occur after approximately 200–1,000 hours of exposure to 1 mg/L of free chlorine (200–1,000 ppm-h tolerance). The rate of chlorine attack depends on various feed water characteristics. Under alkaline pH conditions, chlorine attack is faster than at neutral or acidic pH. An acidic pH is preferred for better biocidal effect during chlorination. Chlorine attack is also faster at higher temperatures and higher concentrations of heavy metals (e.g., iron), that can catalyze membrane degradation. Since oxidation damage is not covered under warranty, Technical person always recommends removing residual free chlorine by pretreatment prior to exposure of the feed water to the membrane. Other oxidizing agents such as chlorine dioxide, hydrogen peroxide, ozone, and permanganate are capable of damaging RO/NF membranes also if not used properly.
Residual free chlorine can be reduced to harmless chlorides by activated carbon or chemical reducing agents. An activated carbon bed is very effective in the dechlorination of RO feed water according to following reaction:
C+2Cl2 +2H2O→4HCl+CO2
Sodium metabisulfite (SMBS) is commonly used for removal of free chlorine and as a biostatic. Other chemical reducing agents exist (e.g., sulfur dioxide), but they are not as cost-effective as SMBS.
When dissolved in water, sodium bisulfite (SBS) is formed from SMBS: Na2S2O5 + H2O → 2 NaHSO3
SBS then reduces hypochlorous acid according to: 2NaHSO3 + 2HOCl → H2SO4 + 2HCl + Na2SO4
In theory, 1.34 mg of sodium metabisulfite will remove 1.0 mg of free chlorine. In practice, however, 3.0 mg of sodium metabisulfite is normally used to remove 1.0 mg of chlorine.
The SMBS should be of food-grade quality and free of impurities. SMBS should not be cobalt-activated. Solid sodium metabisulfite has a typical shelf life of 4–6 months under cool, dry storage conditions. In aqueous solutions, however, sodium bisulfite can oxidize readily when exposed to air. A typical solution life can vary with concentration as follows:
Concentration (wt %) Solution life
10 1 week
20 1 month
30 6 months
Although the dechlorination itself is rapid, good mixing is required to ensure completion. Static mixers are recommended. The recommended injection point is downstream of the cartridge filters in order to protect the filters by chlorine. In this case, the SMBS solution should be filtered through a separate cartridge before being injected into the RO feed. Dechlorinated water must not be stored in tanks.
When RO/NF membranes are fouled with heavy metals such as Co and Cu, residual SBS (up to 30 ppm) partially converts to oxidants under the presence of excessive oxygen. When there is a heavy potential for metal fouling, SBS dosing amount control must be optimized and oxidation conditions of the concentrate must be monitored by an oxidation-reduction potential (ORP) meter.
The absence of chlorine should be monitored using an oxidation-reduction potential (ORP) electrode downstream of the mixing line. 175 - 200 mV threshold readings of the ORP have been typically applied. The electrode signal shuts down the high pressure pump when chlorine is detected.
We are keeping ready stock of Sodium metabisulfite, Hydrogen Peroxide, Hydrogen Floride HF, Potassium Permagnate, Hcl, Descaling compound and many more products for RO MEMBRANE cleaning and maintenance product in Mumbai, Kandla, Chennai, Kolkata, Fujairah.
Email : mail@rxmarine.com ( For INDIA SUPPLY )
mail@dubichem.com ( For UAE Middle East supply )
Sodium Sulfite reacts with hot water, steam or acids to produce corrosive material, Which is damaging PRECIOUS METAL PARTS. Scientifically its corrosiveness can be controlled by using CORROSION INHIBITOR and Catalyst.
RXSOL MARINE RESEARCH CENTRE Developed sodium sulfite based compound to neutralize CHLORINE content.
Sodium Sulphite (sulfite) with Catalyst Powder
Enviro Guard Sulfite
Email us to GET discounted price for MARINE CHEMICALS Ballast Water Treatment Chemicals : marinechemical@gmail.com
The whole idea of having this system is to produce as and when required to avoid vagaries . However the SANITISER liquid produced will last for a week (if stored in dark place in air tight container) after which it may start depleting.
A weak soln. ( 1.2 % ) is used. For purifying water
0.02 to 0 .2 % volumetric is sufficient for Potable Water Treatment
General formulation to calculate how much bleach is needed to add to a tank or a pipeline to disinfect it to a given chlorine residual using a given disinfectant. Usually someone wants to know how to meet an AWWA Standard (like C651-92, Disinfection of Water Mains). The equation below should be used to estimate the amount of sodium / Calcium hypochlorite (Chlorine Water is 6.00% sodium hypochlorite) needed to disinfect a given quantity of water to a desired chlorine concentration.
req'd residual in ppm
Valume of hypo = volume of water x ( ----------------------------- )
1,000,000 x hypo %
For example , say you had installed a new 5,000 gallon tank and wanted to make sure that you had at least a 100 ppm solution of chlorine in it.
How much 6.00% Hypochlorite would you need to add ?
- (5,000 gal x 100 ppm) / (1,000,000 x .06) = 8.33 gallons
How much 12% Hypochlorite solution would you need ?
- (5,000 gal x 100 ppm) / (1,000,000 x .12) = 4.17 gallons
If you use calcium hypochlorite (the white, powder version of chlorine, like HTH pool cleaner), the equation becomes:
req'd residual in PPM
Wgt. of Calcium Hypo (lbs)= gal of water x 8.33 lb / gal m x ( ----------------------------- )
1,000,000 x hypo %
- This is simply the previous equation multiplied by the conversion factor of 8.33 pounds per gallon of water.
Let's assume that we still need to disinfect 5,000 gallons at 100 ppm.
How many pounds of 65% calcium hypochlorite (HTH pool cleaner) are needed?
- (8.33 lbs/ gal. x 5,000 gal x 100 ppm) / (1,000,000 x .65) = 6.4 pounds
Why slip barrier coat required before loading of cargo like salt / Urea.
White cargo like salt, urea directly affected by rusty brown colour. Rust formation on the hold will discolor the white cargo salt when it comes into contact. Hence before loading of such cargo proper treatment of hold which makes entire surface rust free must required. Uses of slip barrier coat Hold block on entire loading area of hold and bulkheads can prevent the salt / urea from coming in contact with the rusty surface.
Stock and direct supply point of Slip barrier coat is Visakhapatnam - Gangavaram, Kandla - Deendayal port, Mumbai, Chennai - Ennore, kolkata - Haldia, Fujairah - Dubai.
Available packing : 25, 50, 210 Ltr DRUM
Approximate requirement of Slip barrier coat : only 2 Drums of 210 Ltr can cover 5 Hold area. For salt cargo, slip barrier coat can be applied after dilution. 1 drum can be diluted with 400 Ltr of water.