摘要
采用厌氧消化后的消化液对稻草进行堆沤预处理,设计正交试验L9（34）,考察温度、含水率、混合液悬浮固体（MLSS）及时间对厌氧消化产气量的影响,并对堆沤处理前后的稻草进行了不同有机负荷率下的产气试验。结果表明,堆沤处理后稻草总产气量比未处理提高了3%-49.5%,最优条件组合为温度30℃、含水率900 g.kg^-1、时间10 d、MLSS 1 500 mg·L^-1。在此最优条件下,处理后稻草消化的单位挥发性固体产气量为804.8 mL·g^-1,与未处理稻草相比提高51.2%,产气高峰提前10 d左右。
Effluent from anaerobic digestion was used in this experiment to ret rice straws. An orthogonal experiment program was carried out to determine effects of temperature, moisture, time and MLSS （mixed liquid suspended solid） on biogas generation during anaerobic digestion and compare retted rice straws with un-retted ones in biogas generation under different loadings of organic substances. Results show that the total hiogas yield of retted rice straws was about 3%- 49. 5% higher than the untreated one. The optimal conditions for biogas generation were 30 ℃ in temperature, 900 g · kg^-1 in moisture, 10 days in time and MLSS at 1 500 mg · L^-1 in volume. Under such conditions, the biogas yield of retted rice straws reached 804.8 mL · g^ VS （volatile solid）, 51.2% higher than that of untreated ones and the yield peaked 10 days earlier.
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2007年第4期63-66,共4页
Journal of Ecology and Rural Environment
基金
农业部可再生能源专项基金(0302)
关键词
堆沤
稻草
正交试验
厌氧消化
产气量
retting
rice straw
orthogonal experiment program
anaerobic digestion
biogas production
