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为了使污泥与餐厨垃圾联合厌氧发酵产氢余物产甲烷后的沼渣得到有效利用,研究了以Ca(OH)_2代替NaOH作为碱剂调节产氢余物与污泥混合物初始pH进行厌氧发酵产甲烷情况。结果表明,以NaOH和Ca(OH)_2作为碱剂的消化系统厌氧发酵产甲烷的最佳接种量均为50%,且产甲烷率和比产甲烷速率相差不大,分别为60.48mL/(g·DS)、2.16mL/(g·DS·d)和58.68mL/(g·DS)、2.35mL/(g·DS·d),两种消化系统的COD、总糖和总蛋白质的降解率分别为63.0%、25.7%、47.1%和56.7%、23.6%、45.7%。以Ca(OH)_2代替NaOH作为碱剂调节反应物初始pH进行厌氧发酵产甲烷是可行的。
In order to make sludge and food waste combined with anaerobic fermentation of methane after methane-producing biogas residue was effectively utilized to study the use of Ca (OH) _2 instead of NaOH as an alkali agent to adjust the initial pH of the hydrogen-producing residue and sludge mixture Methane production by anaerobic fermentation. The results showed that the optimum inoculation amount of methane produced by anaerobic fermentation of digestive system with NaOH and Ca (OH) 2 as alkaline agent was 50%, and the methane production rate and methane production rate were almost the same, which were 60.48mL / (g · DS), 2.16 mL / (g · DS · d) and 58.68 mL / (g · DS), 2.35 mL / (g · d · d · d), COD of the two digestive systems, total sugar and total protein The degradation rates were 63.0%, 25.7%, 47.1% and 56.7%, 23.6% and 45.7%, respectively. Ca (OH) _2 instead of NaOH as an alkaline agent to adjust the initial pH of the reactant to produce methane anaerobic fermentation is feasible.