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VERY LARGE SCALE VERMICULTURE IN SLUDGE STABILISATION

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  • Rodel Capillo
    Read more.. http://www.eidn.com.au/technicalpapervermiculture.htm VERY LARGE SCALE VERMICULTURE IN SLUDGE STABILISATION EXECUTIVE SUMMARY The use of
    Message 1 of 1 , Mar 21, 2006
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      Read more..
      http://www.eidn.com.au/technicalpapervermiculture.htm

      VERY LARGE SCALE VERMICULTURE IN SLUDGE STABILISATION

      EXECUTIVE SUMMARY

      The use of vermiculture as a method for the
      stabilisation of sewage sludge and other organic
      wastes has been mooted for the past 50 years.
      Considerable work on the stabilisation process and the
      value of the vermicast by-product has been carried
      out)

      Notwithstanding the scientific support for the
      process, vermiculture has remained a cottage industry,
      with very few large scale facilities processing
      substantial quantifies of organic waste. The barrier
      to the commercial implementation has been a mixture of
      engineering, capital and perceived risks of an
      unproven process and the high cost of operating
      traditional on ground systems. Much of the fault lies
      with the vermiculture industry which has focused on
      the breeding of worms for sale, rather than on the
      business of waste management and vermicast marketing.

      The driving force behind the introduction of
      vermiculture, or other reuse processes, is the global
      recognition of the need to recover organic material
      and return this to the soil. Legislation is being
      enacted to prevent the dumping of organic material to
      land fill. Simultaneously, the cost structures of
      dumping are increasing and farmers are becoming more
      aware of the need to change their practices to halt
      and reverse the degradation of their soils. There is
      thus market pressure for the waste processing and the
      consumption of the end product.

      To be a viable alternative, very large scale
      vermiculture must be proven to be ecologically and
      commercially sustainable, capable of being operated
      without subsidy, on a competitive basis.

      Vermitech has, through the development of proprietary
      equipment and processes, created a system that can
      consistently and cost effectively, stabilise a large
      range of organic wastes including sewage sludge. This
      paper will describe the process and systems, the
      regimes for verifying the achievement of required
      stabilisation and contamination, the design criteria
      for ensuring compliance with environmental impact
      restrictions and finally the value of vermicast as an
      end product.

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