The geobiotechnology laboratory at the National College (Autonomous) in Tamil Nadu’s Tiruchirappalli, in partnership with the Perundurai Common Effluent Treatment Plant (PCEPT) in the state has developed a technology that uses microbes and earthworms in sludge processing and management. The process is called vermistabilisation for management of textile mill sludge.
The methods of treating and disposing toxic textile waste, produced in every phase of the textile manufacturing process, are limited, according to S Senthil Kumar from the National College.The geobiotechnology laboratory at the National College (Autonomous) in Tamil Nadu's Tiruchirappalli, in partnership with the Perundurai Common Effluent Treatment Plant in the state has developed a technology that uses microbes and earthworms in sludge processing and management. The process is called vermistabilisation for management of textile mill sludge.#
The technique can offer safe waste management and sustainable agriculture by converting industrial pollutants into nutritive biofertilizer or plant probiotics, according to reports in government-owned media outlets.
The technology involves two stages. In the first, textile mill sludge is subjected to microbial pre-composting using novel dye decolorizing bacteria for 30 days.
The second stage involves vermistabilisation, wherein the pre-composed sludge is mixed with cow dung in a 1:1 ratio to enhance the suitability of the sludge as a growth medium for earthworm action and kept for a maximum of 60 days.
The earthworm Eudrilus eugeniae was used for this stage. This combined process brings the advantages of both microbial and earthworm-mediated composting and minimizes the adverse impact of waste on environment by converting it into plant probiotics in a short time.
Field trials are being carried out in the Perundurai CETP site with a series of compositions of chemical sludge and cow dung.
Fibre2Fashion News Desk (DS)
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