Moisture Retention Of Municipal Solid Waste Mixed With Sewage Sludge And Ash In A Semi-Arid Climate  

Oleh:

Dollar, L. H.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Waste Management & Research vol. 23 no. 3 (Jun. 2005), page 209-219.
Topik: Field capacity; inherent moisture; moisture storage; leachate; saturation; water balance; wmr 721–3
Fulltext: 209.pdf (386.77KB)

Isi artikel

Mechanisms involved in moisture storage in refuse are explored using data from four sets of experiments in a semiarid climate. Two laboratory series of experiments contained municipal solid waste (MSW) amended with sewage sludge, one with higher proportions of ash in the MSW than the other. Outdoor experiments contained waste streams with different proportions of ash. Field cells compared moisture retention of refuse and MSW co-disposed with sewage sludge. Sewage sludge at high loads was found to increase the moisture storage relative to unamended MSW. Belt-pressed sludge retained water as bound water that was released by decay and changing pH. Sun-dried sludge also retained more moisture than MSW alone. In gravimetric terms, ash reduced the storage potential of MSW, in laboratory and outdoor experiments. However, outdoor experiments released less leachate from ash-rich refuse than middle-income waste with no ash fraction.

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