畜禽养殖舍生物土壤滤体除臭装置

为研究土壤生物滤体除臭装置对于畜禽养殖场散发出的恶臭气体的去除效果,该文概述了生物土壤滤体除臭装置性能指标、结构和工作原理。确定了关键部件结构参数和运行参数,并通过在气体分布基质层中增加布气网管方式提高臭气滤除效果。采用的活性土壤滤层配方为:草腐土75%,珍珠岩20%,黑炭5%,滤层高度1000mm,滤料表面负荷15.5～22.0m3/(m2.h),滤料湿度控制范围(52±3)%。试验结果表明,主要恶臭物质NH3、CH4和CO2去除率大于95%;CO和氮氧化物(以NO2计)去除率大于85%,与畜禽臭气共同扩散的总挥发性有机物(TVOC)、可吸入颗粒物(PM10)和总悬浮物(TSP)去除率大于95%,系统排出气体的臭气浓度分别为7.5～8.0,符合达标排放要求。

Soil biological filter deodorization device for livestock and

In order to find out an efficient way for removing odour gas form livestock and poultry farms, a soil biological filter deodorization device was studied. This article described an overview of soil biological filter deodorization device performance index, structure and working principle. The structure parameters and operating parameters of main components were determined. The gas distribution pipes were used in the matrix layer to improve the removal effect. The active soil filtering bed ingredients were grassmould 75%, perlite 20% and black carbon 5%. The height of filter bed was 1 000 mm, surface load of filter material was 15.5-22.0 m3/(m2·h), and the range of filter humidity was controlled at 52%±3%. Prototype application results showed that removal rate of main odour material NH3, CH4 and CO2 were above 95%; CO and nitrogen oxides (expressed in NO2) were above 85%. The removal rates for volatile organic matter and diffusion odour of livestock and poultry, IP-Inhalable particle (PM10) and total suspended solids (TSP) were all above 95%. The odour concentration of vented gas from the system was 7.5-8, which can meet the discharge standards requirements.