Many responsible enterprises have invested in waste water pre-treatment facilities in order to ensure their sewage is suitable to be further treated in the municipal waste water treatment plant. However, it is not always possible to handle all waste water or sludge within the company. Oily sand or hazardous sludge, what should a company do with it? It’s always a good option to contact an expert, and fortunately, there are companies specialized in dealing with others difficult waste, one example on the video!