以淀粉糖浆与红糖启动CSTR生物制氢反应器的对比  

Comparison of the Start-up of CSTR Bio-hydrogen Product Reactor Based on Starch Syrup and Brown Sugar

作　　者：周芷若[1] 李永峰[1] 管红伟 郝东东[1] 

机构地区：[1]东北林业大学林学院,黑龙江哈尔滨150040

出　　处：《广东化工》2016年第16期41-43,共3页Guangdong Chemical Industry

基　　金：黑龙江省自然科学基金(E201354)

摘　　要：本研究对SS-CSTR(以淀粉糖浆为底物的CSTR系统)与BS-CSTR(以红糖为底物的CSTR系统)的启动进行了对比。采取由启动初期的较高OLR[18 kg/(m3·d)]降至较低OLR[9 kg/(m3·d)]的方式(污泥接种量分别为18.11 g VSS/L和18.04 g VSS/L,温度为35±1℃,HRT=6 h),SS-CSTR与BS-CSTR系统均可以实现在16 d左右启动。启动完成后,SS-CSTR与BS-CSTR系统的p H分别稳定在4.37和4.28左右。生物气产量分别达到3.00 L/d和4.52 L/d,其中氢气含量分别为74.60%和75.28%。SS-CSTR的COD去除率维持在8.30%左右,BS-CSTR的COD去除率保持在18%左右。经对比SS-CSTR系统与BS-CSTR(以红糖为底物的CSTR系统)系统的启动情况,可以得出以下结论:SS-CSTR系统的启动效果与BS-CSTR系统相比较差,SS-CSTR应对环境条件变化的调节能力逊于BS-CSTR系统。其原因是SS-CSTR系统中易于被微生物消化利用的糖分含量低于BS-CSTR系统。The study compares the start-up of SS-CSTR （CSTR system based on starch syrup） and BS-CSTR（CSTR system based on brown sugar）. To start up the two reactors, taking a method that to reduce the OLR of each system from 18 kg/（m^3·d） to 9 kg/（m^3·d）, the seed sludge volumes are respectively 18.11 gVSS/L and 18.04 gVSS/L, temperature is 35±1℃, HRT=6 h. Both SS-CSTR and BS-CSTR systems finished starting up with in about 16 days. In the final phase of start-up the pH of SS-CSTR and BS-CSTR is steady at 4.37 and 4.28 respectively. Biogas yield is 3.00 L/d and 4.52 L/d respectively, of which the hydrogen percent is 74.60 % and 75.28 % respectively. The COD removal rate of SS-CSTR is steady at about 8.30 %, while the BS-CSTR is 18 %. Comparing the two systems＇ condition of start-up, we could draw the following conclusions： SS-CSTR had a worse effect, and SS-CSTR was worse at adopting the change of the environment comparing with BS-CSTR. The reason is that SS-CSTR contained less easily biodegradated sugar than the BS-CSTR.

关 键 词：制氢 底物 厌氧发酵 启动 

分 类 号：TQ[化学工程]