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Titolo:
Sludge treatment and reuse as soil conditioner for small rural communities
Autore:
Kuai, LP; Doulami, F; Verstraete, W;
Indirizzi:
State Univ Ghent, Ctr Environm Sanitat, LabMET, B-9000 Ghent, Belgium State Univ Ghent Ghent Belgium B-9000 tat, LabMET, B-9000 Ghent, Belgium
Titolo Testata:
BIORESOURCE TECHNOLOGY
fascicolo: 3, volume: 73, anno: 2000,
pagine: 213 - 219
SICI:
0960-8524(200007)73:3<213:STARAS>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEWAGE-SLUDGE; MOBILITY; PLANTS;
Keywords:
super-absorbent; fertiliser; household wastewater; primary sludge; small-scale;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Verstraete, W State Univ Ghent, Ctr Environm Sanitat, LabMET, Coupure L 653, B-9000 Ghent, Belgium State Univ Ghent Coupure L 653 Ghent Belgium B-9000 Belgium
Citazione:
L.P. Kuai et al., "Sludge treatment and reuse as soil conditioner for small rural communities", BIORES TECH, 73(3), 2000, pp. 213-219

Abstract

An alternative method for on-site treatment of sewage sludge for small-scale wastewater treatment installations was developed. Primary Domestic Sludge (PDS) at 40 g dry matter per liter of suspension was supplemented with 10g of the super-absorbent (SA). The mixture obtained in a matter of minuteswas of crumbly consistency without leakage of free water. These crumbs were spread on cardboard supported by an undulated plate. After air drying for1-2 weeks, depending on the ambient air temperature and humidity, the water content of the crumbs decreased from 96% to 8.5%. The dried residue was used to treat a new volume of primary domestic sludge. This cycle was repeated for more than 15 times and the SA remained active. The technical skills and the costs related to convert PDS to an air-dry residue by means of thisSA-based process, appear appropriate for a family or a small community. The final product of the sludge treatment process contained about 50% (w/w) organic material in a stabilised form. It was rich in N and P and it had a high hygienic quality. Greenhouse tests growing maize showed that this finalproduct had soil improving properties. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 08:47:42