Hazardous Sludges
Nationwide Hazardous Sludge & PPM Tanker Waste Treatment Services
DHI Environmental provides fully compliant hazardous sludge treatment and tanker waste processing services across the UK, supporting businesses generating waste through planned preventative maintenance (PPM), interceptor cleaning and effluent treatment operations.
Collected via vacuum tanker, hazardous sludge streams including oil/water separator waste, tank bottom residues and effluent treatment plant sludge are transported to licensed facilities for mechanical dewatering, separation and recovery.
Require Hazardous Sludge Collection or Tanker Processing?
PPM interceptor waste, tank bottom sludge and oil/water separator waste managed safely and compliantly nationwide.
Our structured treatment approach maximises landfill diversion while ensuring full regulatory compliance and Duty of Care assurance.
Why use DHI for Hazardous Sludges?
Engineered Treatment Capability
Mechanical dewatering and advanced separation processes designed to reduce volume and maximise recovery from hazardous sludge streams.
Oil Recovery & Refining Routes
Recovered oil fractions are diverted to refining, reducing waste liability and supporting circular resource recovery.
Fully Compliant Processing
Tanker-collected sludge managed under strict environmental permitting with full Duty of Care documentation.
Nationwide Treatment Network
Access to licensed treatment centres across the UK, ensuring efficient routing and reduced transport impact.
Our Process
Assessment & Treatment Allocation
Enquiry received and placed into local treatment centre for processing.
Each tanker-collected sludge stream is assessed based on composition, contamination levels and processing requirements.
Waste is allocated to an appropriately licensed local treatment facility, ensuring compliance and efficient routing within our national network.
Mechanical Dewatering & Separation
Waste processing – dewatering and filtering (oil/water separation).
Sludge undergoes mechanical dewatering and advanced separation processes to isolate solids, recoverable oil and aqueous fractions.
This controlled treatment reduces overall waste volume and enables recovery of valuable materials where possible.
Recovery & Diversion
Solids to treatment centres to divert from landfill, oil to refining, water discharged.
Separated solids are transferred to approved treatment centres to maximise landfill diversion.
Recovered oil is sent for refining and reuse, while treated water is discharged in accordance with environmental permitting and regulatory standards.
Industries we typically serve for hazardous sludges
Utilities & Water Treatment
Effluent treatment sludge, washout residues and separator waste generated during routine plant and network maintenance.
Manufacturing & Heavy Industry
Process sludge, tank bottom residues and oil/water separator waste produced through industrial operations and PPM servicing.
Oil & Fuel Storage Facilities
Tank clean-out sludge, contaminated fuel residues and interceptor waste requiring controlled tanker collection and recovery.
Facilities Management & Commercial Estates
Interceptor and drainage sludge generated from scheduled maintenance of car parks, service yards and plant rooms.
Transport Depots & Logistics Hubs
Oil/water separator sludge and forecourt interceptor waste collected during routine infrastructure maintenance.
Energy & Infrastructure Contractors
Contaminated water sludge, remediation residues and separator waste arising from infrastructure and environmental works.
Book a Hazardous Sludge Collection
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