Challenge

New Zealand’s mountainous islands are among the most scenic attractions in the world. They usher in a new field of commerce known as eco-tourism and foster a healthier economy and industrial growth. They also represent a bitter-sweet challenge. As an island country, New Zealand constantly weighs the delicate balance between developing its economy and preserving its environment. 

Centrally located, Wellington serves as the nation’s capital, the third largest municipality and as a major seaport. Its population of 160,000 people generates an abundance of solid waste; however, disposal options are limited. Because of topography, a level tract of land is hard to find. Consequently, an excavated ridge is the site of the City’s state-of-the-art landfill and composting facility.

Solution

In 1998, the City selected the IPS Composting System for processing biosolids with green waste. They contracted with Living Earth Joint Venture (LEVJ) to design, construct and operate the city-owned facility.

Results

• Processing organic residuals in the IPS Composting System allows the City to extend the life of its landfill and produce a high quality marketable end product. 
• LEVJ blends the finished compost with various materials, such as lava pumice, composted yard waste and vermiculite. Some compost is fortified with organic fertilizer. Multiple end products reach broader market segments.