Vermicomposting of dewatered sludge from pulp and paper mill

被引：0
|
作者：
Sonowal, Puspanjali [1 ]
Khwairkpam, Meena [2 ]
Kalamdhad, Ajay S. [1 ]
机构：
[1] Department of Civil Engineering, Indian Institute of Technology Guwahati (IITG), Guwahati, India
[2] Department of Civil Engineering, National Institute of Technology (NIT), Meghalaya, Shillong, India
来源：
International Journal of Environment and Waste Management | 2015年 / 15卷 / 01期
关键词：
Dewatering - Food processing - Paper and pulp mills - Papermaking machinery - Pulp - Nitrogen;
D O I：
10.1504/IJEWM.2015.066947
中图分类号：
学科分类号：
摘要：
The present paper is aimed at conversion of dewatered sludge from pulp and paper mill into value added product through vermicomposting. The dewatered sludge was blended with cow dung and food processing waste in five different combinations R1 (1.5), R2 (1 + 0.24 + 0.26), R3 (1 + 0.34 + 0.16), R4 (1 + 0.41 + 0.09) and R5 (1 + 0.46 + 0.04) for utilisation in vermicomposting using Eisenia fetida. The earthworms have enriched the end product with high nitrogen profile as confirmed by many fold increase in total nitrogen (TN) and also in total phosphorous (TP), and available phosphorous (AP). Oxygen uptake rate (OUR) reduced by 5-11 folds in all the reactors after 45 days of vermicomposting. Cocoon production and the earthworm biomass increased as vermicomposting progressed. However, R3 (1 + 0.34 + 0.16) proved to be best combination for the growth and hatchlings of the earthworms. On an overall basis R4 proved to be the best feed combination for vermicomposting followed by R5, R3 and R2 respectively. Copyright © 2015 Inderscience Enterprises Ltd.
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页码：24 / 38
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