Detoxification of Sewage Sludge by Natural Attenuation and Application as a Fertilizer

Chaturvedi, Ambika; Saraswat, Pooja; Gupta, Anamika; Prasad, Mrinalini; Ranjan, Rajiv

doi:10.1007/978-3-030-85226-9_13

Cited by 1 publication

(1 citation statement)

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“…Te quality remained unchanged as a result of such an application and even though metals were found in tomatoes, they were not beyond the threshold limit. Aleisa et al also showed a reduction in production of chemical fertilisers [18,19] as well as a lesser impact on the climate by the circular economy approach if sludge could be reused in Kuwait [20].…”

Section: Introductionmentioning

confidence: 99%

Reuse of Sewage Sludge as Organic Agricultural Products: An Efficient Technology-Based Initiative

Balkrishna,

Banerjee,

Ghosh

et al. 2024

Applied and Environmental Soil Science

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Rapid urbanisation has led to a dramatic increase in sewage sludge production. There are limited methods of managing sewage sludge along with high energy and monetary investment. A cost-effective, environment-friendly, and sustainable solution needs to be developed for the management of sewage sludge. In the current study, sludge from the Jagjeetpur sewage treatment plant (STP) had been collected, composted, and characterized during January and February 2022. A comparison of STP sludge compost and compost made from farmyard manure showed the presence of essential agricultural nutrients in them, due to which they find application for plant growth. Two products, Jaivik Poshak and Jaivik Prom, containing farmyard compost, were compared with the amended version of the same, containing compost from STP sludge instead of normal compost. The results showed that the modified Jaivik Poshak was the best for maintaining pH and increasing electrical conductivity. The available nitrogen in the soil upon its application increased by 1.6 times (p<0.001) with respect to control, and it brought about 100% tomato seed germination within sixteen days. The above finding has been validated by goodness of fit value, factor analysis, and hierarchical analysis. The product, modified Jaivik Prom increased organic carbon content and brought about 5.81 and 8 times the enhancement in available phosphorous (p<0.001) and potassium (p<0.001) content in soil, respectively, with respect to the control set. The heavy metal content in the soil as a result of all types of treatment was within the permissible limit. This study thus proves that sludge from STP may be used for agricultural uses after proper fortification and testing to convert waste to wealth along with environmental sustenance.

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Section: Introductionmentioning

confidence: 99%