湖北农业科学
湖北農業科學
호북농업과학
2014年
7期
1520-1523,1527
,共5页
张军%刘孟子%陈俊%王敦球%游少鸿
張軍%劉孟子%陳俊%王敦毬%遊少鴻
장군%류맹자%진준%왕돈구%유소홍
好氧堆肥%通风量%城市污泥%锯末
好氧堆肥%通風量%城市汙泥%鋸末
호양퇴비%통풍량%성시오니%거말
aerobic composting%ventilation volume%municipal sludge%sawdust
为实现城市污泥减量化、无害化和稳定化的综合目的,以城市污泥与锯末为原料,在一体化污泥好氧发酵仓内采用3组不同通风工况进行静态好氧堆肥试验,分析堆体温度、挥发性固体、含水率、发芽指数和pH随时间变化的特点。结果表明,在污泥与锯末含水率分别为83%和11%,质量比为4:1时,3种通风工况均能实现高温好氧堆肥。工况2(不同时段通风量分别为0.8、0.6、0.4、0.6、1.0、1.0 L/min)时堆肥效果最佳,温度维持50℃和55℃以上时间最长,堆肥结束时测得白菜种子发芽指数超过80%。
為實現城市汙泥減量化、無害化和穩定化的綜閤目的,以城市汙泥與鋸末為原料,在一體化汙泥好氧髮酵倉內採用3組不同通風工況進行靜態好氧堆肥試驗,分析堆體溫度、揮髮性固體、含水率、髮芽指數和pH隨時間變化的特點。結果錶明,在汙泥與鋸末含水率分彆為83%和11%,質量比為4:1時,3種通風工況均能實現高溫好氧堆肥。工況2(不同時段通風量分彆為0.8、0.6、0.4、0.6、1.0、1.0 L/min)時堆肥效果最佳,溫度維持50℃和55℃以上時間最長,堆肥結束時測得白菜種子髮芽指數超過80%。
위실현성시오니감양화、무해화화은정화적종합목적,이성시오니여거말위원료,재일체화오니호양발효창내채용3조불동통풍공황진행정태호양퇴비시험,분석퇴체온도、휘발성고체、함수솔、발아지수화pH수시간변화적특점。결과표명,재오니여거말함수솔분별위83%화11%,질량비위4:1시,3충통풍공황균능실현고온호양퇴비。공황2(불동시단통풍량분별위0.8、0.6、0.4、0.6、1.0、1.0 L/min)시퇴비효과최가,온도유지50℃화55℃이상시간최장,퇴비결속시측득백채충자발아지수초과80%。
Aerobic static co-composting of municipal sludge and sawdust under 3 different ventilation rate of conditions was studied in integrated fermentation device for comprehensive purpose of reduction,harmlessness and stabilization. The indexes such as temperature, VS, moisture content, germination index and pH value were analyzed to examine the feasibility of co-composting of municipal sludge and sawdust. Results showed that when the wet basis ratio of municipal sludge and sawdust was 4:1 and mixed compost can realize co-composting under 3 different ventilation. The optimal ventilation rate was 0.8,0.6,0.4,0.6,1.0 and 1.0 (L/min﹚ for the temperatures above 50℃ and 55℃ maintained for the longest time. GI of Chi-nese cabbage was exceeded 80%.