Guiot S R, Safi B, Frigon J C, Mercier P, Mulligan C, Tremblay R, Samson R
Biotechnology Research Institute, NRC, 6100 Royalmount, Montréal, Québec H4P 2R2, Canada.
Biotechnol Bioeng. 1995 Mar 5;45(5):398-405. doi: 10.1002/bit.260450504.
A 450-m(3) multiplate anaerobic reactor (MPAR) has been started-up in April 1992 for treating wastewater (whey permeate and domestic wastewater) at the Nutrinor (Lactel) cheese factory in Chambord (Québec, Canada). The MPAR consists of four superimposed sections. The liquid flows upwards from one section to the next, while the gas is collected below each plate and evacuated through side-outlets. The wastewater is concurrently distributed at the bottom of the first, second, and third sections, as 50%, 33%, and 17% of the total influent stream, respectively. Granular anaerobic sludge at an initial concentration of 30 kg of volatile suspended solids (VSS) per cubic meter of reactor liquid volume was used to inoculate the reactor. Under normal operation of the factory, the chemical oxygen demand (COD) concentration of the influent ranged from 20 to 37 kg COD m(-3). The reactor organic loading rate (OLR) fluctuated between 9 and 14.7 kg COD m(-3) d(-1) for hydraulic retention times (HRT) maintained between 55 and 68 h. At the highest OLR, the MPAR showed an efficiency of 98% and 92% for soluble and total COD removal, respectively, and a methane production rate averaging around 4 m(3) m(-3) d(-1).Biomass-specific activities ranged between 7 and 51, 1.3 and 8.5, 5.3 and 12.2, 60 and 119, and 119 and 211 mmol g(-1) VSS d(-1) for glucose, propionate, acetate, formate, and hydrogen, respectively. Average equivalent-diameter of the granules was around 0.65 mm. The MPAR reactor generally showed a large capacity for solid retention with a biomass content between 32 and 37 kg VSS m(-3).
1992年4月，一座450立方米的多板厌氧反应器（MPAR）在加拿大魁北克省尚博尔的Nutrinor（Lactel）奶酪厂启动，用于处理废水（乳清渗透液和生活污水）。该MPAR由四个叠加部分组成。液体从一个部分向上流到下一个部分，而气体在每个板下方收集并通过侧出口排出。废水同时分别以总进水流量的50%、33%和17%分布在第一、第二和第三部分的底部。以每立方米反应器液体体积30千克挥发性悬浮固体（VSS）的初始浓度的颗粒厌氧污泥用于接种该反应器。在工厂正常运行期间，进水的化学需氧量（COD）浓度在20至37千克COD/立方米之间。对于保持在55至68小时之间的水力停留时间（HRT），反应器有机负荷率（OLR）在9至14.7千克COD/立方米·天之间波动。在最高OLR时，MPAR对可溶性和总COD的去除效率分别为98%和92%，甲烷产率平均约为4立方米/立方米·天。生物量比活性分别为葡萄糖7至51、丙酸盐1.3至8.5、乙酸盐5.3至12.2、甲酸盐60至119和氢气119至211毫摩尔/克VSS·天。颗粒的平均等效直径约为0.65毫米。MPAR反应器通常显示出较大的固体保留能力，生物量含量在32至37千克VSS/立方米之间。
