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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
16/03/1999 |
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Data da última atualização: |
16/03/1999 |
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Autoria: |
NAKAMURA, Y. |
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Título: |
Colonization by earthworms of NIIMI waste water treatment trenches. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
Pedobiologia, v.23, p.399-402, 1982. |
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Idioma: |
Inglês |
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Conteúdo: |
Megadrilid worms, mainly Eisenia foetida, and microdrillids, mainly Enchytraeus spp., both play important roles in the purification of waste water using a modification of a recently developed method known as the Niimi process. In this, the waste water filters through a trench lined with stones covered by a layer of soil, the two lkayers being separated by a net. The microdrilids were most abundant in the boundary net and amonghst the stones, and the megadrilids in the soil layer above. The number of worms of both types increased as the trench became established over a period of eleven months. It appears to depend on the constant supply of waste water with suspended organic matter including hydrocarbon compounds and fatty protein analogs which pass through the boundary-net and on which the worms feed. The megadrilid and microdrilid worms are thus able to prevent the substrate from clogging and to maintain conditions which are essential for water treatment. |
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Palavras-Chave: |
Eisenia foetida; Megadrilidae; Microdrilidae; NIIMI process; Purification; Puruficacao; Waste water treatment trenches. |
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Thesagro: |
Água; Desperdício; Tratamento. |
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Thesaurus Nal: |
Enchytraeus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01626naa a2200253 a 4500
001 1794325
005 1999-03-16
008 1982 bl --- 0-- u #d
100 1 $aNAKAMURA, Y.
245 $aColonization by earthworms of NIIMI waste water treatment trenches.
260 $c1982
520 $aMegadrilid worms, mainly Eisenia foetida, and microdrillids, mainly Enchytraeus spp., both play important roles in the purification of waste water using a modification of a recently developed method known as the Niimi process. In this, the waste water filters through a trench lined with stones covered by a layer of soil, the two lkayers being separated by a net. The microdrilids were most abundant in the boundary net and amonghst the stones, and the megadrilids in the soil layer above. The number of worms of both types increased as the trench became established over a period of eleven months. It appears to depend on the constant supply of waste water with suspended organic matter including hydrocarbon compounds and fatty protein analogs which pass through the boundary-net and on which the worms feed. The megadrilid and microdrilid worms are thus able to prevent the substrate from clogging and to maintain conditions which are essential for water treatment.
650 $aEnchytraeus
650 $aÁgua
650 $aDesperdício
650 $aTratamento
653 $aEisenia foetida
653 $aMegadrilidae
653 $aMicrodrilidae
653 $aNIIMI process
653 $aPurification
653 $aPuruficacao
653 $aWaste water treatment trenches
773 $tPedobiologia$gv.23, p.399-402, 1982.
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Registro original: |
Embrapa Pantanal (CPAP) |
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