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首页> 外文会议>National Seminar on "Application of Chemical Engineering for Utilisation of Natural Resources (CHEMINAR-2001)", Feb 16-18, 2001, Bhubaneswar >Biomethanation of Market Waste for Generation of Biogas
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Biomethanation of Market Waste for Generation of Biogas

机译：市场废物的生物甲烷化以产生沼气

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An unorganized disposal of waste from vegetable markets, food processing industries and industrial canteens creates a serious health hazard and environmental pollution in and around the habitation. In the developed countries, the trend is to divert such wastes away from landfill. The studies have shown that efficiency of the anaerobic digestion of these wastes for biogas generation is high with internal rates of returns above 20%. The biogas can be used for lighting, heating and electricity generation. In the present studies, the results of biomethanation of the rejects and peels of vegetables and fruits (market waste) collected from RRL Bhubaneswar Canteen biodegraded in a 0.5 m~3 capacity floating dome KVIC digester have been presented. The physico-chemical analysis of the vegetable waste carried out in the laboratory showed 24.6% - 25.50% total solids (TS), 78.5- 80.2% volatile solids (VS of TS). The enzymatic hydrolysis studies of the market waste conducted in a 10 litre anaerobic digester solubilising the market waste has been presented. The above studies show that the solution COD increases from an initial value of 2,000 mg/l to 18,000 mg/l over a period of 25 days, indicating this to the HRT of the market waste for biodegradation. The results of the biogas generated in the digester charged on all working days over a period of one month with a slurry containing 2 kg vegetable waste (cut into small pieces) and animal waste in proportion 1:2, 1:1, 1:0.5, 1:0.25 and 1: 0. each for more than 3 weeks for successive six months have been presented and discussed. Under steady-state condition with 18-20 days of hydraulic retention time (HRT) of the substrate in the digester, the biogas produced in litre/kg of market waste varies from 75.48 l/kg - 70.50 l/kg at different market waste to animal waste ratio with an average value of 72.62 litre/kg of market waste fed to the digester with COD removal efficiency of 62.86%. The average methane and hydrogen sulphide. contents in the biogas were found to be 67.24% and 0.63% respectively. The plant could be successfully operated singularly on the market waste.
机译：蔬菜市场，食品加工业和工业食堂对废物的无序处置会在栖息地及其周围造成严重的健康危害和环境污染。在发达国家，趋势是将此类废物从垃圾填埋场转移出去。研究表明，这些废物的厌氧消化产生沼气的效率很高，内部收益率超过20％。沼气可用于照明，供暖和发电。在本研究中，已经提出了从RRL布巴内斯瓦尔食堂收集的蔬菜和水果（市场废物）的果皮和果皮在0.5 m〜3容量的浮球KVIC消化池中进行生物降解的生物甲烷化结果。在实验室对蔬菜废物进行的理化分析显示，总固体含量（TS）为24.6％-25.50％，挥发性固体含量为（TS）VS 78.5-80.2％。已经提出了在10升厌氧消化池中进行的市场废物的酶促水解研究，以溶解市场废物。以上研究表明，溶液的COD在25天的时间内从最初的2,000 mg / l增加到了18,000 mg / l，表明这对用于生物降解的市场废物具有HRT的作用。在一个月的所有工作日中，将含有2千克蔬菜废物（切成小块）和动物废物的比例为1：2、1：1、1：0.5的浆液充入消化池中的沼气池的结果，1：0.25和1：0。已经提出并讨论了连续3个月超过3周的时间。在稳定状态下，沼气池中基质的水力停留时间（HRT）为18-20天，以公升/千克市场垃圾产生的沼气在不同市场垃圾下为75.48升/千克至70.50升/千克。 •动物粪便的比例，平均为72.62升/千克市场垃圾，送入蒸煮器，其COD去除效率为62.86％。平均甲烷和硫化氢。沼气中的含量分别为67.24％和0.63％。该工厂可以成功地单独处理市场上的废物。

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