Feasibility of vermistabilization for fresh pelletized dewatered sludge with earthworms Bimastus parvus

被引：47

作者：

Fu, Xiaoyong ^{[1
]}

Huang, Kui ^{[1
,2
]}

Chen, Xuemin ^{[1
]}

Li, Fusheng ^{[2
]}

Cui, Guangyu ^{[1
]}

机构：

[1] Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, Lanzhou 730070, Peoples R China

[2] Gifu Univ, River Basin Res Ctr, Gifu 5011193, Japan

来源：

BIORESOURCE TECHNOLOGY | 2015年 / 175卷

关键词：

Dewatered sludge; Earthworms; Pelletisation; Vermicomposting; Waste recycling; PRIMARY SEWAGE-SLUDGE; STABILIZATION; COMMUNITY; MANURE;

D O I：

10.1016/j.biortech.2014.11.007

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The aim of this study was to investigate the feasibility of vermistabilization of fresh pelletized dewatered sludges (PDS) without any bulking materials using earthworms Bimastus parvus. For this, two pelletized treatments with 4.5 mm and 14.5 mm fresh PDS and one without pelletized treatment were setup. Earthworm's fate test showed that earthworms could not survive in the treatment without pelletisation. For two pelletized treatments, B. parvus had a good life, producing great numbers of cocoons and hatchlings, after 60 days. Vermicomposting of PDS resulted in the decreases of DOC, ammonia-nitrogen and microbial biomass and activity while increases of electrical conductivity and nitrate-nitrogen and available phosphorous. These findings suggest the stable and beneficial vermicomposts were achieved. The overall results evidenced that the fresh PDS without blending could be directly stabilized by vermicomposting and the vermireactor containing 4.5 mm PDS displayed a better performance than 14.5 mm PDS. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：646 / 650

页数：5

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