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Lab-Scale Model to Evaluate Odor and Gas Concentrations Emitted by Deep Bedded Pack Manure
Published on: July 19, 2018
A bench-scale aeration study using batch reactors on swine manure stabilization to control odour in post treatment
Zhijian Zhang1, Jun Zhu, Keum J Park
1Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, PR China. zjzhangox@yahoo.com
Water Research
|December 20, 2005
Summary
Aerating swine manure for 4.0 days effectively stabilized it, reducing odor potential during 90-day storage. Longer aeration and lower solids improved stabilization, with temperature also influencing organic matter breakdown.
Area of Science:
- Environmental Science
- Agricultural Engineering
- Waste Management
Background:
- Swine manure management is crucial for odor control and environmental protection.
- Aeration is a promising technology for manure stabilization.
- Understanding the impact of aeration parameters on manure quality is essential.
Purpose of the Study:
- To evaluate swine manure stabilization for odor control using batch aeration reactors.
- To assess the effects of different aeration lengths and solids content on manure quality.
- To determine the optimal aeration strategy for odor reduction during storage.
Main Methods:
- Bench-scale study using batch aeration reactors with finishing pig manure.
- Two trials with varying aeration lengths (0.5, 4.0, and 16.0 days) and controlled/uncontrolled temperatures.
- Analysis of total volatile solids (TVS), biochemical oxygen demand (BOD(5)), total Kjeldahl nitrogen (TKN), and volatile fatty acids (VFA) during 90-day storage.
Main Results:
- Increased aeration length improved reductions in TVS, BOD(5), TKN, and VFA.
- Lower initial total solids (TS) levels were more advantageous for stabilization and odor control.
- A 4.0-day aeration scheme was sufficient for odor control under increasing ambient temperatures.
- Biochemical oxygen demand (BOD(5)) effectively estimated volatile fatty acid (VFA) concentration during storage.
Conclusions:
- Aeration is effective for swine manure stabilization and odor control.
- A 4.0-day aeration period is sufficient to mitigate odor during 90-day storage under fluctuating temperatures.
- Optimizing aeration length and managing solids content are key for effective manure treatment.
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