ZWD Projects
A Sustainable Approach to Salt Recovery in the CETP.
Introduction:
The operation of Zero Liquid Discharge (ZLD) systems in CETP for tannery sector results in the recovery of permeate water and salt. While the recovered water is recycled back to tanneries for reuse in their leather processing, the recovered salt has remained an unused by-product, accumulating in storage yards. Recognizing the need for a sustainable solution, CEMCOT has proposed a project under the STEP Scheme of IFLDP of DPIIT to recover and segregate this salt, enabling its reuse in various industries.
Project Description:
The proposed project is the technology suggested by CSIR-CSMCRI that aims to segregate the recovered salt into two streams, namely Sodium chloride and Glauber’s salt (sodium sulphate), through a purification process. The segregated salts can then be used in various uindutri3es such as chemical industries, Cement Industries Etc. This innovative technology not only resolves the issue of salt accumulation in ZLD systems but also helps in achieving near Zero Waste Discharge (ZWD) in the leather industry.
Benefits and Impact:
This project marks a significant milestone for the leather industry, as it provides a sustainable solution for the reuse of salt, a by-product that previously had no reusable possibility. By achieving near ZWD, the industry enhances its environmental sustainability and contributes to the circular economy. Furthermore, the project's implementation will enhance the image of the leather industry among customers, consumers, and the public, showcasing its commitment to environmental stewardship.
Request for Subsidy:
CEMCOT requests the Government of India to grant subsidy for this project under the STEP Scheme of Indian Footwear Leather Development Programme (IFLDP), recognizing its contribution towards environmental sustainability and circular economy.
