|Table of Contents|

Influence of Different Fermentation on Activity of Heavy Metals in Pig Manure(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年10
Page:
149-154
Research Field:
Publishing date:

Info

Title:
Influence of Different Fermentation on Activity of Heavy Metals in Pig Manure
Author(s):
HOU Yue-qing1; 2; 3; SHEN Yu-jun2; 3; MENG Hai-bo2; 3; LIU Shu-qing1; WANG Fei4; CHENG Hong-sheng2; 3
(1.College of Resources and Environmental Sciences，Agricultural University of Hebei，Baoding，Hebei 071000;2.Chinese Academy of Agricultural Engineering，Beijing 100125；3.China Key Laboratory of Energy Resource Utilization From Agriculture Residue，Ministry of Agriculture，Beijing 100125；4.Rural Energy and Environment Agency，Ministry of Agriculture，Beijing 100125)
Keywords:
natural fermentation; forced ventilation fermentation; anaerobic dry fermentation; pig manure; heavy metals
PACS:
S 141
DOI:
10.11937/bfyy.201510038
Abstract:
Taking pig manure and straw as raw materials，the speciation changes of heavy metals Cu，Pb，Zn during three kinds of fermentation，such as natural fermentation，forced ventilation fermentation and anaerobic dry fermentation was studied.The results showed that the passivation effect on heavy metal Cu，Pb，Zn for the forced ventilation fermentation treatment were 45.42%,60.18%，32.21%，respectively.The passivation effect on heavy metal Cu，Pb，Zn for the natural fermentation treatment were 39.60%,28.68%,6.19%，respectively.The passivation effect on heavy metal Cu，Pb，Zn for the dry anaerobic fermentation treatment were 3.08%,24.19%,-1.11%，respectively.Compared to the dry anaerobic fermentation treatment，natural fermentation treatment and forced ventilation treatment were more conducive to heavy metals transformed from the higher active forms to the lower forms.From the fermentation quality effect，forced ventilation fermentation and natural fermentation could take advantage of the high temperature period effectively which could kill the pig pathogen and weed seeds during the fermentation process，and the high temperature period more than 55℃ for forced ventilation fermentation processing was about twice as great as natural fermentation processing，and anaerobic dry fermentation processing remain about 40℃ during the whole fermentation process；after the fermentation，the EC value for the forced ventilation fermentation treatment was 1.79 mS/cm，the other two treatment values were higher than forced ventilation fermentation treatment，which were 5.67 mS/cm，6.36 mS/cm，respectively.A higher EC value has the potential risk of soil salinization.The natural fermentation need to extend the natural fermentation time due to inadequate oxygen supply cannot be completely harmless.And the anaerobic dry fermentation needs to continue the aerobic fermentation in order to realize completely rotten.In all，taking into account of the effects of fermentation quality and heavy metals passivation，the forced ventilation fermentation process may have more competitive to enhance the quality of fermented products.

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Last Update: 2015-08-08