Sludge granulation and waste code change

Sludge is one of the by-products of wastewater treatment process. It can be further processed and turned into a product that is safe to be introduced into the environment as soil enhancer. The process itself is conducted using full hygienisation and sludge granulation lines. The line consists of a reactor and lime silos, as well as sludge and granule conveyors and lime dispenser. Thickened and dehydrated sludge is mixed in the reactor with a specific dose of quicklime. During lime hydration process, the temperature increases, creating a sterile and stable granulate of specific size. Due to that, its storage and transport are a lot easier and safer. The main use of this product is agricultural crops fertilization. The product can be sold on condition of the seller obtaining marketing authorization.

Marketing authorization procedure

Before obtaining the marketing authorization for soil enhancers, the following analyses need to be conducted and documents obtained (brackets provide information about the estimated waiting time for each document):

  • Biological tests (2-6 weeks)
  • Biological tests report
  • Physicochemical tests (2-6 weeks)
  • Physicochemical tests report
  • Review of influence on human health (2-4 weeks)
  • Review of influence on animal health (2 weeks)
  • Review of influence on the environment (2 weeks)
  • Agricultural tests (about 1 year)
  • Agricultural suitability review
  • Instructions for use and storage
  • Product characteristics (2 weeks)
  • Application to the Ministry of Agriculture and Rural Development (up to 2 months)

In addition, a subject producing the discussed product must expand their business scope to fertilizers and/or plant conditioners trade.

Legal regulations associated with wastewater sludge usage

  • Waste Act (Journal of Laws 2013, nr. 0, pos. 21)
  • Regulation of the Minister of Environment from the 13th of July 2010 for the municipal wastewater sludge (Journal of Laws 2010, nr. 137, pos. 924)
  • Regulation of the Minister of Environment from the 5th of April 2011 for R10 recycling (Journal of Laws 2011, nr. 86, pos. 476).

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