HIM in Kassel

We have been operating a chemical-physical hazardous waste treatment plant and hazardous waste collection centre in Kassel since 1978 for the environmentally friendly disposal of your hazardous wastes in accordance with legal regulations.

Substances are only processed in the chemical-physical treatment plant following a detailed analysis. Waste products are treated by lots in self-contained reaction vessels using neutralisation, reduction, oxidation and / or precipitation.

Inorganic acids and bases as well as other concentrates are neutralised for further treatment depending on the substances they contain. Toxic substances such as heavy metals, chromate or cyanide are either destroyed or immobilised and separated.

After treatment, the resulting sludge is dewatered in a chamber filter press prior to proper disposal. The remaining waste water is released into the municipal sewer network after being tested by our in-house laboratory and approved in accordance with the discharge conditions of the city of Kassel.

In the organic tract of the chemical-physical treatment plant, oily liquids are separated into solid, oil and water fractions. Then the water content of the oil fraction is reduced prior to recycling. The watery fraction is treated further in the chemical-physical treatment plant so that the resulting waste water is safe for discharge into the public sewer network according to the applicable discharge values. Separated sludge undergoes thermal treatment.

At the hazardous waste collection centre, wastes are accepted as bulk goods, in IBCs or barrels after a receiving inspection and temporarily stored in covered storage units. The wastes are sorted, conditioned, repackaged and assembled into larger shipments as needed before sending them to one of our plants or a selected cooperation partner.

Kassel Emulsion Separation Plant


Chemical-Physical Treatment Plant

The chemical-physical hazardous waste treatment plant in Kassel focuses on the treatment of organic wastes. To a minor extent, the facility in northern Hesse also neutralises inorganic acids and bases as well as detoxifying other inorganic wastes. Coarse materials are first removed from emulsions, oil / water mixtures, oil sludge, oil and gasoline trap residues and grit chamber trappings. Oil is then separated from the water and sludge fractions by a centrifuge process. The sludge is solidified prior to thermal treatment. Oil is recycled. Flocculation and precipitation are used to separate organic materials from the water fraction; these are subsequently dewatered. The water undergoes a treatment process until it meets the requirements for discharge into the sewer system.

The types of waste treated in our chemical-physical treatment plant include the following:

  • Acids and bases
  • Concentrates and rinse water
  • Galvanic baths and sludge
  • Waste water and neutralisation sludge
  • Liquids and sludge containing cyanide / heavy metals
  • Waste water from coating processes and spray booths
  • Grit chamber trappings and oil trap contents
  • Oil / water mixtures
  • Oil separation plant sludge
  • Tank and barrel cleaning sludge
  • Laboratory and fine chemicals
  • Landfill leachate

For an exact list of the waste codes, please see the appendix in the PDF file:



















Collection Centre

In addition to wastes requiring chemical-physical treatment, we can also accept waste for thermal treatment, recycling or special disposal at the hazardous waste collection centre. Examples include:

  • Materials contaminated with oil, oil binders, oil filters
  • Lacquers and paints
  • Glues and solvents
  • Laboratory and fine chemicals
  • Pesticides
  • Acids contaminated with organic substances
  • Galvanic, neutralisation and phosphating sludge (semisolid)
  • Soil and excavated material
  • Asbestos waste
  • Packaging or materials contaminated by chemicals
  • Small capacitors and wastes containing PCBs
  • Fluorescent lamps
  • Batteries
  • Waste electrical and electronic equipment
  • Night-storage heaters
  • Used wood and roofing felt

For an exact list of the waste codes, please see the appendix in the PDF file:


Disposal Process

Waste management is much more than the actual treatment of wastes. In the Kassel chemical-physical treatment plant and collection centre, we treat the supplied materials with due diligence, disposing of them properly and safely in the best interests of our customers and the environment. The potential negative impact of hazardous substances is effectively eliminated.

The typical disposal process includes the following steps:

Prior to Delivery
Based on the initial analysis of a waste sample, the HIM sales department establishes to which plant and under what acceptance conditions the waste will be delivered; a declaration of acceptance is issued. Receiving inspection tests are also defined at this stage. Prior to each delivery, the waste originator contacts the scheduling department of HIM Kassel to arrange a delivery date.

Analysis / Receiving Inspection
The results of the receiving inspection are compared to the recorded customer and waste data. Then the in-house laboratory establishes the treatment method as well as the required safety measures.

Waste is accepted at the receiving tanks of the chemical-physical treatment plant or the receiving areas of the hazardous waste collection centre (barrel storage, bulk material storage).




Service Depends on People

Safety is a matter of course for us. We meet the applicable legal requirements and allow our customers to audit us. HIM employees are qualified specialists in the fields of waste disposal and the remediation of contaminated sites. They are intimately familiar with the specific needs of our customers. This allows us to offer optimum solutions to your problems.

We emphasise customer service as well as technical expertise. Talk to us! Our sales staff will be glad to assist you.



Safety Standards

The disposal of hazardous wastes is subject to strict legal regulations. In addition, we have implemented our own set of standards to effectively protect people and the environment.

Internal and external plant, occupational and fire safety inspections are also conducted at regular intervals. Approval processes pursuant to the Federal Immission Control Act (BImschG) and safety concepts form the foundation for the implementation of legal requirements.