Construction & Demolition (C&D) Waste, is one of the most challenging issues being faced by the rapidly developing country like India. C&D waste consists of waste that is generated during new construction, remodeling, renovation, repair and alteration of residential, commercial, government or institutional buildings, industrial, commercial facilities and demolition of buildings, roads, bridges, dams, tunnels, railways and airports. Often contain Concrete, Metals and plastics, Wood, Asphalt, Gypsum, Salvaged building components such as doors, windows and fixtures, Masonry, bricks and other miscellaneous. C&D debris often contains bulky, heavy materials that include:
While C&D waste streams are large in volume, they generally contain relatively inert material, which are of low risk for waste management. It is commonly understood that this waste can be considered a resource, either for reuse in its original form. Due to increasing waste production and public concerns about the environment, it is desirable to recycle materials from building demolition. As per Rule 3 (c) "construction and demolition waste" means waste comprising of building materials, debris and rubble resulting from construction, re-modeling, repair and demolition of any civil structure. The rules shall apply to every waste resulting from construction, re-modeling, repair and demolition of any civil structure of individual or organization or authority who generates construction and demolition waste such as building materials, debris, rubble.
It is estimated that the construction industry in India generates about 10-12 million tons of C&D Waste annually. The presence of C&D Waste and other inert materials is significant (almost one third of total MSW on an average), but so far not much development has taken place for utilizing this in an organized manner. It constitutes about 20 % of the municipal solid waste (excluding large construction projects). Projections for building material requirement of the housing sector indicate a shortage of aggregates to the extent of about 55,000 million cum. Additional 750 million cum aggregates would be required for achieving the targets of the road sector. Recycling of aggregate material from construction and demolition waste may reduce the demand- supply gap in both these sectors.
To address the following problems of resource depletion, increasing demand for building materials, societal awareness on pollution effects (dust, pollution due to traffic congestion owing to roadside disposal) of C&D these rules were framed.
The major/ minor components of the C&D waste are as follows:
Construction and demolition waste processing plant in Indore is setup by Indore Municipal Corporation under our consultancy and supervision. It is located at Devguradia Waste Processing plant in an area of 4 acre. Presently Indore generates about 60 TPD C&D waste. Looking into the project life of 15 years, the plant is designed with a capacity of 100 Tons per day (TPD). We, Eco Pro Environmental Services has been Project Design and Management consultant for the project and aslo the consultant for Indore Municipal Corporation.
To support the plant, IMC through its contractors uses all the products produced at the C&D plant at market price.
Four major products are made which are as follows:
We design the C&D plants compliant with MSW Rules and C&D waste management and handling rules 2016. Our plants C&D waste into aggregates, which in turn is converted to Ready Mix Concrete, cement bricks, hollow bricks, pavement blocks, kerb stones, concrete bricks and manufactured sand, thereby reducing the consumption of fresh stones and sand, and mitigating pollution arising in the process. Using Plant technology for Indian conditions, the C&D waste plant is able to recover about 95% of incoming C&D waste. We use 3Rs policy, use of waste minimizing technologies and reuse of materials is adopted to minimize C&D waste. Recycling of C&D waste by converting it to useful products offer dual benefit of saving landfill space and reduction in extraction of natural raw material for new construction activities, leading towards sustainable development.