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The discharge of raw sewage into the sea can create a health hazard, while in coastal areas, sewage can also lead to oxygen depletion and an obvious visual pollution - a major problem for countries with large tourist industries.


MARPOL 73/78, Annex IV prohibits the discharge of sewage into the sea, except when the ship has in operation an approved sewage treatment plant or is discharging comminuted and disinfected sewage using an approved system at a distance of more than three nautical miles from the nearest land; or is discharging sewage which is not comminuted or disinfected at a distance of more than 12 nautical miles from the nearest land. ROCHEM 'S' TREAT is a strong chloride based alkaline solution with powerful disinfecting, deodorizing and germicidal properties developed specifically for sewage affluent treatment prior overboard discharge in compliance with MARPOL 73/78, Annex IV.




Appearance : Colourless to light Greenish Yellow Clear Liquid.
Odour : Characterstic (Chlorine like)
Special Gravity : 1.07- 1.18
pH : 12.5 ± 0.5
Solubility : Easily Soluble in cold water.




Rochem "S" treat should be dosed undiluted into the sewage affluent as recommended by the Sewage Treatment Plant OEM. Chlorination tank and Dosing pump are normally provided by the S.T.P. OEM. However Rochem can supply the same, if required. The dosage rate should be calculated considering the Chlorine content of Rochem "S" Treat as 10%. So if the S.T.P. OEM recommends Chlorine dosage as, say 30 grams/day, then the required dosage of Rochem "S" Treat will be 0.3 ltrs/day.

Use Rochem Chloride test kit to measure and record the Chloride content of the sewage affluent and adjust the dosage accordingly, if required.




Keep container tightly closed & store in a cool, well ventilated area, away from acid, alkalies etc. Avoid contact with skin or clothing. Wash with large quantities of water in case of contact with eyes for 15 minutes and see a physician. As with any chemical, use proper PPE for handling like goggles or face shield, rubber gloves, boots etc.





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