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Liquid wastes containing chlorinated paraffins

Below is an outline of the options and recommended processes for dealing with liquid wastes containing chlorinated paraffins.

Types of waste

Oily waste - from metal working

Plasticiser condensates

Water based mixtures and emulsions

Preparation for disposal/recovery

		Thermal splitting - water to drain/re-use. Oil recovery
Water separation		Ultrafiltration � Reduce COD then water to drain/re-use. Oil recovery
		Chemical splitting - Treat separated phases as hazardous waste (C10-13 CPs only)

Treatment methods

		Incineration ->Energy generation (Cement production or primary energy)
Resource Recovery
		Cleanup -> Re-use

		Incineration (without energy generation)
Disposal
		Absorb on solids then to landfill

Resource recovery treatments are strongly recommended wherever these are available and is encouraged in most countries

Notes on waste containing CPs

PCBs - Not present or formed during use in metal working processes or in recovery/incineration.

Dioxins - Not formed or emitted from properly designed and operated incineration equipment.

Limit chlorine to 1 % in oil for efficiency in energy generation.

Recovery of waste oil containing more than 0.2% chlorine is not allowed in Germany.

Landfill is generally applicable, but consult local regulations.

Because C_10-17 chlorinated paraffins are significantly more toxic to certain aquatic species than longer chain types (C₁₈ and above) it is recommended that waste containing these be treated as special or hazardous waste.

CPs with C₁₈ and longer chain length types do not result in waste being classified as hazardous.

Further advice

More comprehensive information and assistance are available from chlorinated paraffins suppliers.

References and publications

Lache, W., Albers, G., Lehinann, H. (1989): Untersuchung von gebrauchten, chlorparaffinhaltigen Metallbearbeitungs�len auf polychlorierte Biphenyle, Dibenzodioxine und Dibenzofurane. Ber. Dtsch. Wiss. Ges. Erd�l, Erdgas, Kohle, Project 387-1.

Vinyl Coating Plant Waste Gas Incineration - paper presented at Society of Plastics Engineers Conference, "Vinyl a Material for the Future" - September 15-16, 1988 Montreal

Analysis of flue gases and fly ash from the steam boiler furnace at a paper company during the destruction of waste containing chlorinated paraffins (unpublished).

Tysklind, M et al, PCDD and PCDF emissions from scrap metal smelting processes at a steel mill - Chemosphere, Vol. 19, Nos. 1-6, pp. 705-710, 1989.

Revised July 2005