30 SEP 2022  |  --> CLOSING ON: 30 DEC 2022  |  REWARD: INR 5,00,000
Reward money is paid in exchange of legally acquiring the solution, implementing it to solve the problem and meeting the success criteria. Milestones for paying the reward money would depend upon the complexity of challenge and maturity of the proposed solution, which would be discussed with the solver as soon as the proposed solution is selected by us.

30 DEC 2022

INR 5,00,000

We seek solutions for the sustainable recycling and reuse of hazardous phosphate sludge.

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Challenge Details

Manufacturing of coated steel products generates a significant amount of waste in the form of metallic, non-metallic scraps, used oil, solvents, and other hazardous wastes/byproducts. Of the various categories of waste, handling, and management of hazardous waste (in the form of sludge, used solvents, and/or oil) is most challenging for manufacturing plants due to concerns related to its storage, transportation, treatment, or disposal activities.

Hazardous wastes generated include but are not limited to zinc byproducts, waste oil from plants, and sludge (phosphate sludge, sludge from effluent treatment, and chemical sludge from wastewater treatment). Of these, phosphate sludge is the most hazardous waste. Its storage and disposal are carried out according to guidelines of country-specific regulations & currently it is landfilled in many countries. Opportunities are sought for sustainable reuse and recycling of hazardous phosphate sludge which can help prevent storage and/or landfill.

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