Landfill Design Conflicts with the Natural Beauty of the Surroundings and Below Grund

The necessity to control leachate and rubbish heap gas will continue till the wastes contained inside a site don't have the potential to cause issues in their specific location. In fact the pressure to maximise dump gas and therefore improve the amount energy obtained from waste is bound to continue to rise.

This fact is emphasized by the Waste Regulations and Environment Agency Allowing requirements, with landfill operators being legally obliged to introduce and maintain long term aftercare regimes which, in the case of rubbish heap gas control and leachate management, may need to continue for many decades.

It is not feasible to outline precisely the point at which wastes can not be considered to pose a potential environmental threat.

In many ways, the development of modern landfilling strategies, and particularly the move towards containment landfills, can incline to decelerate instead of speed up the rate of stabilization of the wastes.

This conflict, which is a genuine one and not just unproven, must be addressed by the rubbish heap industry.

As the industry moves towards the idea of "Bio-reactor" landfills it is crucial that the need to control the complex processes at work in the landfill - particularly in respect of leachate management and gas enhancement - doesn't at last conflict with, and thereby prejudice, the requirement to maintain the integrity of the engineered structure. This highlights the necessity for the rubbish heap scientist to work closely with the landfill engineer in order to achieve an acceptable degree of compatibility.

At the end of the day the principal target should be the protection of the environment. There is no reason why, with careful design, this target shouldn't be achieved while at the same time improving the benefit to be gained from collecting and harnessing a handy resource in the shape of rubbish heap gas.

Leachate recirculation has incredible benefits by reducing the power of the leachate, especially with a very young leachate where the free-of-charge anaerobic digestion it receives in such a rubbish heap as it bubbles through the saturated layers is excellent pre-treatment.

Of course to gain recirculation one basically has to have, if you like, a reservoir to pull on in the base of the rubbish heap and therefore manifestly one would have some standing leachate level there to pull on. The other point naturally is another, in a way, problem that is that of the hydraulics of heavily compressed waste at the base of a rubbish heap, which is actually quite impervious, and actually trying to get water to pass through such waste in a controlled manner is a hard one which neither the industry or its regulators have got to grips with yet.
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