T/GDIN 005-2023 Ship Oil-Containing Pollutant Reception and Treatment - Pre-treatment

Scope

Scope: This document specifies the terms and definitions, basic requirements, process introduction, and operating parameters of the pretreatment stage in the reception and treatment of oily pollutants from ships; raw materials and equipment facilities; and requirements for environmental protection and safe production. This document is applicable to enterprises providing services for the treatment of oily pollutants from ships. Main technical content: Removing floating oil and emulsified oil from oily pollutants from ships by physical or chemical methods, while removing part of the chemical oxygen demand (CODCr), sulfides (TS), and suspended solids (SS), so that they can meet the stable operation of the biochemical treatment system during subsequent biochemical treatment. Adopt advanced and reliable technologies with stable effluent quality and treatment effects that meet the requirements of subsequent secondary biochemical treatment. The sedimentation facilities and oil-water separation facilities use gravity to make oil substances float. During this process, steam heating can be used. Temperature changes promote convection and accelerate the floating of oil, thus achieving faster and more effective oil-water separation. The inclined tube sedimentation facilities use emulsifier, coagulant, and flocculant additives to emulsify oil and destabilize colloidal suspended solids. Part of the sulfides forms insoluble flocs with metal ions in the added reagents and precipitates. The air flotation facilities generate microbubbles that adhere to suspended solids in the water and rise to the surface, forming a scum layer.

Development Information

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