Chemical manufacturing waste and hazardous waste

Separate and manage hazardous waste in chemical manufacturing

You should separate hazardous waste from all other wastes to manage it effectively.

Using coloured bins can be a fast and cost-effective system. For example, you could use:

  • red bins for general hazardous waste
  • black bins for oily rags and absorbents used to clean-up spills
  • brown bins for contaminated packaging
  • green bins for non-hazardous waste - or as appropriate for different reusable and recyclable materials

It is important to correctly separate all the hazardous waste your business produces. Even a small amount of hazardous waste in a non-hazardous waste bin is likely to result in the whole container having to be classified as hazardous waste. This will increase the cost of disposal.

Dispose of contaminated packaging and personal protective equipment correctly

You should remember that any packaging contaminated with even low levels of hazardous raw material may be considered hazardous waste. You will need to assess the level of contaminants in your waste and dispose of it safely - seeĀ hazardous waste responsibilities for chemical manufacturers.

You can take steps to clean contaminated packaging, eg with vacuum systems. You can then recycle or dispose of the packaging as non-hazardous waste in the usual way. You can usually dispose of the cleaning agent in your normal trade effluent. However, you must make sure that you comply with the conditions of your trade effluent consent if you have one - seeĀ discharging trade effluent.

You can also clean contaminated personal protective equipment (PPE) such as gloves or overalls for reuse or recycling.

Manage filter cake

You should manage batch and continuous filter-cake production carefully by:

  • increasing the proportion of dry, solid content through dewatering and chemical conditioning
  • separating filter cakes
  • recycling recovered solids
  • reusing filtrate liquors
  • separating spent recant solution and process liquors to avoid mixing incompatible waste streams - this will make it easier to regenerate or recycle components