Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Science, China Agricultural University, Beijing 100193, China.
Beijing Building Materials Academy of Science Research/State Key Laboratory of Solid Waste Reuse for Building Material, Beijing 100041, China.
J Environ Sci (China). 2018 May;67:344-355. doi: 10.1016/j.jes.2017.08.014. Epub 2017 Aug 30.
The effects of adding a bulking agent on the performance and odor emissions (ammonia and eight sulfur-containing odorous compounds) when biodrying kitchen waste were investigated. Three treatments were considered: the addition of either cornstalks (CS) or wood peat (WP) to kitchen waste as a bulking agent before biodrying, and a control treatment (CK). The water-removal rates for CK, CS, and WP treatments were 0.35, 0.56, and 0.43kg/kg, respectively. Addition of bulking agents to kitchen waste produced less leachate, higher moisture-removal rates, and lower consumption of volatile solids. The CS treatment had the highest biodrying index (4.07), and those for the WP and CK treatments were 3.67 and 1.97, respectively. Adding cornstalks or wood peat decreased NH emissions by 55.8% and 71.7%, respectively. Total sulfur losses were 3.6%-21.6% after 21days biodrying, and HS and MeSS were the main (>95%) sulfur compounds released. The smallest amounts of sulfur-containing odorous compounds were emitted when cornstalks were added, and adding cornstalks and wood peat decreased total sulfur losses by 50.6%-64.8%.
研究了添加膨松剂对生物干化厨余垃圾过程中性能和气味排放（氨和 8 种含硫恶臭化合物）的影响。考虑了三种处理方法：在生物干化前向厨余垃圾中添加玉米秸秆（CS）或木泥炭（WP）作为膨松剂，以及对照处理（CK）。CK、CS 和 WP 处理的脱水量分别为 0.35、0.56 和 0.43kg/kg。向厨余垃圾中添加膨松剂可产生更少的渗滤液、更高的水分去除率和更低的挥发性固体消耗。CS 处理的生物干化指数最高（4.07），WP 和 CK 处理的生物干化指数分别为 3.67 和 1.97。添加玉米秸秆或木泥炭可使 NH 排放分别减少 55.8%和 71.7%。经过 21 天的生物干化，总硫损失为 3.6%-21.6%，HS 和 MeSS 是主要（>95%）释放的硫化合物。添加玉米秸秆时，含硫恶臭化合物的排放量最小，添加玉米秸秆和木泥炭可使总硫损失减少 50.6%-64.8%。
