Two new CDE mobile wet processing systems were recently commissioned in Thane and Surat for recycling construction and demolition waste generated by their rapidly developing infrastructure.

In line with Construction and Demolition (C&D) waste management Rule of 2016 of the Central government, every city should have its own C&D waste management facility and also a policy for the same. Thane Municipal Corporation (TMC) and Surat Municipal Corporation (SMC), investigated the possibility of installing C&D waste management facilities in their cities which would facilitate the recycling of construction and demolition waste. One of the critical aspects of selecting CDE recycling technology was its compact footprint, low energy requirement, and the fact that it does not generate dust, noise or water pollution during processing.

In Thane, out of 1,000 metric tons of waste generated daily, 200 metric tons is from construction and demolition debris alone. The civic body has formulated a policy wherein the contractor responsible for generating debris (either through construction or demolition) will have to pay money to TMC for transferring and treating it at its plant in Daighar. Those found dumping debris illegally on land, water bodies or mangroves will have to pay a fine of ₹5,000 to ₹20,000, apart from paying waste transfer and treatment charges. The waste generator will have to pay ₹1,089 per metric ton of waste as transportation charges. If they transport the waste themselves, they will pay ₹545 per metric ton. In case they generate debris less than one metric ton and are willing to transport it to Daighar, then they would not have to pay anything. The Daighar plant can treat up to 300 metric tons of debris per day and can convert the waste into tiles, paver blocks and concrete blocks. TMC gives 20% discount on C&D waste treatment to building contractors who are ready to buy the recycled by-products and re-use them.

CDE ReUrban Mini

In 2018, TMC and SMC had floated tenders on PPP basis for selecting the waste processor who would be responsible for setting up a new recycling facility for processing the city's C&D waste in lieu of a tipping fee. Metrro Waste Handling Pvt Ltd (MWH) won the contract from Thane Municipal Corporation and Surat Green Precast Pvt Ltd (SGGPL) won the Surat Municipal Corporation contract. Both companies then invested in a brand-new mobile recycling plant from CDE Asia, which not only satisfied the requirement of the contract but ultimately allowed them to produce quality washed sand and aggregates for selling directly to local contractors, who in turn can use this material in construction projects. The materials produced include aggregates in the following sizes: +80mm oversize, +20mm – 80 mm, 8-20mm and washed sands in the form of a 2-8mm grit and a 0-2mm sand.

Having commissioned the facility, the customers soon became aware of the financial benefits and process efficiencies of CDE C&D recycling technology that maximises water recovery and deals with wastewater from the plant to suit space restrictions on project sites. CDE water and waste treatment solution has resulted in a completely self-contained CDE wet processing plant which allows for all water being kept within the system, making it a zero-discharge system. This has kept requirements for fresh water top ups to a minimum rate of less than 5m3/hr. The inclusion of sludge management process has in itself generated cost savings as the recycled soil can be recovered and utilised for making bricks.

SGPPL Managing Director, Kanoj Lakhani comments: "We have been very happy with the green solutions that CDE Asia has delivered and we are particularly impressed with the highest quality of the equipment and its small footprints to suit the limited land available for operations on site. The C&D waste recycling plant has allowed us to efficiently process C&D waste and, more importantly, produce quality washed sand and aggregates, which is critical for the success of our venture."

As with all projects, from the time of initial investment, CDE had a collaborative approach with the two customers through all stages of the process. This included an onsite training workshop to educate the local contractors and regulators to maximise use of recycled products. CDE engineers explored various other elements of the project design and assigned a Project Manager from the outset who was also the single point of contact for the customer from design, manufacture, logistics, and installation, to commissioning and plant management. Vice President Sanjay Singh comments: "From the point of sale, I was directly and closely involved with both customers to deliver a high-quality recycling plant which would meet their exact technical requirements. This approach enabled a smooth transition from start till completion, and the client has benefited greatly through all stages of project delivery."

CDE ReUrban

Chief Financial Officer for CDE Asia, Manish Madhogaria highlights: "Our tailored approach ensures that we deliver a first-class plant and customer experience throughout the process. The customer has an active involvement in everything we do from design, product specifications, plant location, capacity, etc, and we use our wet processing expertise to help them make high quality recycled products that will provide them with best possible return on investment."

With the company's main purpose being creation of value for its customers, CDE's success is demonstrated by its commitment to how it creates and manages value. The latest and proven innovation of the ReUrban® range of mobile C&D waste recycling plant from CDE Asia, has gone a long way in helping the company shape its future efficiencies which can be passed onto the end-users. With the recycled sand and aggregates having numerous uses, mainly in construction projects, CDE Asia is encouraging sustainable building through production of high-quality recycled products.

More information on this and other turnkey processing systems of CDE Asia can be found on www.cdeasia.com
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