OPTIMIZING VESSEL TANK CLEANING WASTEWATER TREATMENT
This sustainability story is one of many that shows how Olin products, technologies, ideas, and people are having a positive impact on our world.
SUSTAINABILITY CHALLENGE
After transporting Liquid Epoxy Resin (LER) by ship from the US to Olin's site in Zhangjagang, China, emptied tanks are cleaned with warm water.
After cleaning, the mixture of LER and water is collected in containers and sent for off-site disposal by truck to a supplier for further handling.
Olin looked for ways to optimize the waste treatment, reduce the volume of the waste, and avoid unnecessary transport of the waste.
OLIN'S SOLUTION
Olin tested and analyzed the Chemical Oxygen Demand (COD) level of the top layer water, identified the root cause of high COD, and modified the procedure, in compliance with the requirements of relevant authorities, including Maritime Bureau, and the Environmental Protection Bureau.
A process to separate the mixture by precipitation was developed, allowing to separate the top layer water and LER residue at the bottom.
The new solution was implemented after trial runs and official approvals.
POSITIVE IMPACT
The top layer water (~90% of the total volume) could be directly routed by pipe to local onsite wastewater treatment for further handling.
90% of previous waste can be avoided, with the total volume reaching up to 123 MT only for the first half of 2022.
Energy consumption and chemical agent usage could be reduced, as well as emissions during the waste treatment and diversion.
Truck transportation to the supplier for further treatment was significantly reduced, resulting in additional reduction in energy consumption and emissions.
DID YOU
KNOW?
Liquid Epoxy Resins are used in many relevant every-day end uses, contributing to today's needs, such as the production of energy by wind, laminates for board circuits in mobile phones or coatings for cars and ships.
Form No. 600-0508Z-1122
We invite you to follow our Sustainability Journey on www.Olin.com
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Olin Corporation published this content on
19 March 2024 and is solely responsible for the information contained therein. Distributed by
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Olin Corporation is a vertically integrated global manufacturer and distributor of chemical products and a manufacturer of ammunition. The Company operates through three segments: Chlor Alkali Products and Vinyls, Epoxy and Winchester. The Chlor Alkali Products and Vinyls segment manufactures and sells chlorine and caustic soda, ethylene dichloride and vinyl chloride monomer, methyl chloride, methylene chloride, chloroform, carbon tetrachloride, perchloroethylene, hydrochloric acid, hydrogen, bleach products and potassium hydroxide. The Epoxy segment produces and sells a full range of epoxy materials and precursors, including aromatics (acetone and phenol), allyl chloride, epichlorohydrin, liquid epoxy resins, solid epoxy resins and systems and growth products, such as converted epoxy resins and additives. The Winchester segment produces and sells sporting ammunition, reloading components, small caliber military ammunition and components, industrial cartridges and clay targets.