Chemical Industry Solutions

Chemical Waste treatment in compliance with RIVM specific effluent values

In January 2011 a lot and variety of chemicals came into the environment due to a fire on the complex of Chemie-Pack Moerdijk. Water from several sources was used to extinguish the fire. A tremendous amount of water and chemical waste came onto the soil and into the didges and small channels on the 8 hectare of the industrial site.

The fire brigade produced a calamity list showing hundreds of chemical products and a large amount of possible chemical reactions thereof. Most of the chemical products and reactions where even not on the product lists of soil standards (Dutch environmental requirements). In order to redevelop the site into a safe “industrial” area RIVM did produce, based on the extended list, a directional advise.   

Triqua International was requested to test on Lab scale and on Pilot scale the wide variety of advanced techniques on the several waste flows. The available techniques where physical/chemical, biological, oxidation, adsorption and membrane technology. This resulted in a basic Pilot treatment system with the combination of membrane- and adsorption technology. The best available technology was demanded in order to fulfil the legislation standards.

Finally the system was completed with Reversed Osmoses and Dissolved air flotation. See schedule.

The sanitation works on the site is expected to take at least 5 years.

Soil Reclamation by Pilot scale tests on contaminated ground water and other flows 

The process of the above case results in a number of distinct advantages:

  • The Pilot scale shows the best practice of to be used technology
  • Extension or reduction of the Pilot Unit during the tests period is possible.
  • Discharge into the sewer or open waters (land) is possible 

Rain water contaminated with oil - separation in practice

Oil & Gas Production platforms 

Triqua International designed, in collaboration with membrane producer “LiqTech” of Denmark, a complete unit for the separation of oil particles out of contaminated rain water by using the special SiC membranes. The Rain water from the main and helicopter decks may consist a light concentration of free oil and emulsions. Due to the latest IMO (sea) and Land rules the contamination left in the effluent, discharged via drains, must be brought down to less than 5 mg/l; this is the main reason to use the ultra-filtration membranes.

The membranes called SemCoMem are produced from Silicon Carbide and light in weight. The rain water flow can, after treatment, be discharged into the lake or onto the sea.

The process of the above case results in a number of distinct advantages:

  • Plug & Play unit
  • 5 times the flux rate of other ceramic membranes
  • Stable and durable operation that complies to Land & Offshore standards
  • Service & Maintenance friendly
  • A combination with a pre-treatment device (like a TPS or CPU)  is possible.

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