Hannover Milieu- en Veiligheidstechniek B.V. (HMVT) services

Land owners are under an obligation to prevent soil contamination. A clean location is a sign of ‘good housekeeping’. We help them achieving this goal, and from as early as 1995 we realise fluid-tight provisions for new developments and alterations of existing filling stations. These activities are restricted to Belgium for now. In recent years, we have been involved in the construction of countless fluid-tight floors, asphalt roads and company sewer systems. Our facilities can be seen at filling stations, waste processing plants (waste disposal centres), as well as at industrial and technical support services.

We take clean air for granted, and clean air is very important for us to stay in good health. However, the air quality is increasingly under threat from the emission of CO₂, particulate matter and all kinds of chemical substances. We help businesses in purifying their process vapours. Not only do we give advice on finding the right solution, we can also realise and manage a wide array of air purification techniques.

Pure water. We take it for granted, but away from the public eye it takes a lot of effort to maintain the quality of our drinking water and waste water. Innovative solutions are required in every link of the water chain. HMVT helps the business community with advice for this challenge. We have our own production hall for constructing wastewater treatment plants. Here we build water purification plants for treating industrial waste water.

HMVT Rental has a large range of mobile equipment for remediation, water and air purification. We not only use the equipment for our own projects, but we also rent it out to our external clients via our rental division. We would like to give added value to our rental arrangements. What we mean is that we do not simply deliver our products as ordered, but also like to look for the most practical solution together with the client on the basis of our experience and expertise. All that at very competitive rental rates.

Many of our remediation projects are going through a biological phase, in which the core is removed and the remaining contamination in the plume is broken down in a biological manner. Depending on the nature and the seriousness of the residual contamination, the decomposition is stimulated by injecting oxygen and/or carbon sources together with nutrients. We stimulate both anaerobic and aerobic decomposition processes.

Chemical techniques are used more and more to tackle contaminated areas. Either to break down the contamination (e.g. oxidation and reduction) or to anchor the contamination in the soil.

Extractive remediation techniques are techniques that mobilise the contamination in the soil, which will be treated on the surface. We are using the following techniques: Soil air extraction, Compressed air injection, Various ways of groundwater extraction, Vacuum pumping, Gravitational pumping, Multi-phase Extraction, Deep-well pumping.

HMVT is your reliable partner who can take care of the entire remediation process at a fixed price. This concerns not only the remediation work itself, but also advice, granting permits, further (pilot) research (if any), design, implementation, environmental management and completion of the remediation process. Taking over the remediation risks is always a tailor-made process. We clearly and transparently outline the risks that may be involved and we quote a price for which we are willing to take over such risks. On that basis we can come to de definite arrangement with the client for buying out the risks.

The most robust way to remediate a site in situ is to use thermal remediation. For in situ thermal remediation we use Electrical Resistance Heating (ERH). This technology is performed by our Joint Venture company, HMVTRS, in which we work together with TRS Group, Inc. TRS is a U.S. based company specializing in ERH remediation. ERH uses electricity to heat the soil to such a level that a broad range of volatile organic contaminants are vaporized. The vapors are collected by a soil vapor or multi phase extraction system and treated above ground level. In contrast to many other in situ remediation technologies the soil gets completely treated everywhere; regardless if it is sand or a clay/loam layer. This means that the technology effectively targets  trapped pollution like free phase chlorinated hydrocarbons (DNAPL).