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Low cost treatment and reuse of grinding sludge

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Author Affiliations

  • 1Department of Environmental Engineering, Kolhapur Institute of Technology's College of Engineering (Autonomous), Kolhapur, India
  • 2Department of Environmental Engineering, Kolhapur Institute of Technology's College of Engineering (Autonomous), Kolhapur, India

Int. Res. J. Environment Sci., Volume 9, Issue (2), Pages 13-19, April,22 (2020)

Abstract

This paper presents the reuse of grinding sludge in concrete block and clay brick manufacturing. Grinding which is a product finishing operation generates considerable amount of sludge in automotive parts manufacturing. The disposal of the grinding sludge is a challenge for the industries. Currently, landfilling is one of the most adopted option for disposal of grinding sludge, which is the most expensive considering the environmental aspects. The grinding sludge comprises of oil based coolant (cutting oil) and metal chips. This study aims at treating the sludge economically for its oil removal and reusing dried sludge in concrete blocks and clay bricks. The paper includes major findings of the study and summarises the best detergent for washing of sludge. The dried sludge which is used for manufacturing of concrete blocks and clay bricks has been tested for compressive strength test, water absorption for clay bricks and slump test for concrete and are compared with conventionally manufactured concrete blocks and clay bricks.

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