SECONDARY RAW MATERIALS

 Non-organic waste

When MSW has passed all stages of sorting and separation of organic waste from the total mass of MSW, the remainder is divided into the following inorganic fractions (groups):

Combustible:

  • Paper, cardboard and other paper waste;                                  
  • Wood and its derivatives;                                            
  • Textile of different types;                                          
  • Leather, resin;                                
  • Multilayer packages;                
  • Plastic (polymers);
  • Plastic;                      

Incombustible:

  • Ferrous metals;
  • Non-ferrous metals;                                              
  • Glass;                                                                                          
  • Stones;                                          
  • Construction waste;                        
  • Hazardous waste;
  • Sieving;                      

Depending on the production orientation of the MSW recycling and utilization complex, the combustible fractions are sent to packaging and sale as secondary raw materials or, are sent for the RDF production with its subsequent thermal utilization to receive thermal and/or electric energy.

Incombustible waste is stored and sold as a secondary raw material. Waste that cannot be sold is shredded and stored for further transfer to enterprises as bedding. They can be transferred for free with promotion purposes.

promotion purposes.

Secondary raw materials

Secondary raw materials include the following waste groups:

  • Paper, cardboard;
  • Plastic;
  • Textile products;
  • Ferrous metals;
  • Non-ferrous metals;
  • Glass;  

As mentioned above, combustible types of waste can be used as secondary raw materials, and as RDF fuel. If the decision is made to extract secondary raw materials from the combustible waste, then, after separation such fractions are directed to press-packing machines (paper and cardboard, textiles, plastic, non-ferrous metals). It is also possible to provide washing for some types of waste (plastic, non-ferrous metal, glass). In addition, if secondary raw material should be taken in a shredded form (non-ferrous metal, plastic, glass), additional shredding equipment is provided for installation. Ferrous metals are released to the metal bases in unprepared form. Glass is divided into colored and noncolored at the stage of sorting.

For storage of secondary raw materials, appropriate sites are provided. The size of the sites is determined by design.

           Incombustible inorganic waste

Incombustible inorganic waste – those sievings from MSW that are not organic and cannot be used as a secondary raw material. These include:

  • Stones;
  • Construction waste;
  • Sieving;
  • Hazardous waste (batteries, accumulators, mercury lamps, medical waste, etc.);

Hazardous waste is packed and sent to specialized enterprises for its utilization.

The other waste is shredded into fractions of 3-30 mm. and stored for further burial or can be used as bedding. The quantitative index of such sieving is in the range of 10-15% of the total mass of received MSW.