monofil landfils

Mono landfilling of aluminium slag is now is now compulsory in the U.S ,it is not cheap nor safe and soon maybe outlawed as it is in Aust & Europe.

MHM technology is the only closed loop complete solution.

Here is a summary

http://ewssite.com/how-it-works


How our landfill works

Our landfill is among the most technologically advanced in the United States. Here?s why:
Choosing the site

Environmental Waste Solutions specializes in reclaiming former mine pits, and turning them into carefully designed landfills that are classified for ?beneficial use? according to approved Civil Engineering applications. We study the proposed site to determine:

* The area of land necessary for the landfill
* The composition of the underlying soil and bedrock
* The flow of surface water over the site
* The impact of the proposed landfill on the local environment and wildlife
* The historical or archaeological value of the proposed site

EWS works to take otherwise unusable land and make it productive during the short term. Our long-term goals include turning the land into wooded preserves.
Building the landfill

Our sites are thoughtfully designed and highly engineered to exceed state requirements and are professionally run to keep the community safe. Additionally, EWS recently received accreditation from the US. Environmental Protection Agency for the construction and maintenance of our facility. This accreditation was not required, but we pursued it to demonstrate our commitment to the highest environmental standards.

The basic parts of a landfill are:

* Bottom liner system ? separates landfill content and subsequent leachate from groundwater. Leachate is liquid that drains downward through the landfill.
* Individual cells ? where the material is stored within the landfill
* Storm water drainage system ? collects rainwater that falls on undeveloped portions of the landfill and runs off without contacting waste material.
* Leachate collection system ? collects rainwater that comes in contact with waste material and collects the water for treatment and proper disposal.
* Covering or cap ? seals off the top of the landfill

Each of these parts is designed to address specific challenges that are encountered in a landfill. So, with each part of the landfill, there is a problem to be solved.

Bottom liner system

A landfill?s major purpose and one of its biggest challenges is to contain the waste so that potential problems are contained. The bottom liner prevents the waste from coming in contact with the outside soil, particularly the groundwater. EWS uses a 6-foot liner between the ground clay and man-made materials being deposited. The liner is triple lined on the sides and quadruple-lined at the base, far exceeding requirements.
Mono-cell construction

Landfill content is compacted into areas, called cells. The material within the cell is compressed by heavy equipment (tractors, bulldozers, rollers and graders) that go over the day?s accumulation several times. It is covered with six inches of soil and compacted further. Lifts are arranged in rows and layers of adjoining cells.
EWS stores a specific type of waste throughout the landfill, hence it is a ?monofill? composed of ?monocells. This means that 10 or 20 years in the future, if and when it becomes economically feasible, the landfill can be mined and its contents harvested for use.
Storm water drainage

Our sites are built to minimize water discharge. This is done in two ways:

* Prevent rainwater from entering site.
We cover the cells daily to keep out rainwater.
* Drain water away.
To exclude rainwater, the landfill has a storm drainage system. Plastic drainage pipes and storm liners collect water from the landfill and channel it to drainage ditches surrounding the landfill?s base. The ditches carry water from collection areas to the side of the landfill.

Leachate collection system

There is no perfect system to exclude water from a landfill. This water runoff called, leachate is typically acidic. To collect leachate, perforated pipes run throughout the landfill. These pipes then drain into a leachate pipe, which carries leachate to a leachate collection tank. The leachate is tested and allowed to settle. After settling, all water is professionally treated.