Data/hora: 14/06/2024 16:08:27

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	16/03/1999	
Data da última atualização: 	16/03/1999	
Autoria: 	NAKAMURA, Y.	
Título: 	Colonization by earthworms of NIIMI waste water treatment trenches.	
Ano de publicação: 	1982	
Fonte/Imprenta: 	Pedobiologia, v.23, p.399-402, 1982.	
Idioma: 	Inglês	
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.  	
Palavras-Chave: 	Eisenia foetida; Megadrilidae; Microdrilidae; NIIMI process; Purification; Puruficacao; Waste water treatment trenches.	
Thesagro: 	Água; Desperdício; Tratamento.	
Thesaurus Nal: 	Enchytraeus.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (37348-1) - ADD - SP - -- - SP4048 -  - 4048 - DIS