PDF《Biogas Technology》

Biogas Technology Biogas Technology &

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DEWATS Technology DEWATS Technology BORDA―ZUT Project Office BORDA B B remen remen O O verseas verseas R R esearch esearch and and D D evelopment evelopment A A ssociation ZUT Z Z hejiang hejiang U U niversity niversity of of T T echnology echnology Prof.

Ma Chi Prof. Ma Chi Coordinator Coordinator Cn Cn ssociation Dipl. Dipl.- -Ing. Stefan Reuter Ing. Stefan Reuter Director Director Ensuring access to vital resources fostering an intact environment Greetings from the ZUT, City of Hangzhou Cooperation with BORDA since

1987 Biogas Technology Application Biogas Technology Application in Zhejiang Province in Zhejiang Province 沼气技术在浙江省的应用 沼气技术在浙江省的应用 ?Brief information of Zhejiang Province 浙江省简介 ?Biogas technology 沼气技术 Brief information of Zhejiang Province Brief information of Zhejiang Province 浙江省简介 浙江省简介 ?

46 million population(4千6百万人口) ? 100,000 square kilometers(10万平方公里) ? Semitropical climate(亚热带气候) ? Fast but unbalanced economic development (经济发展迅速但发展不平衡) Biogas technology Biogas technology 沼气技术 沼气技术 ? Household biogas digesters (户用沼气池) ? Medium sized biogas plant (中型沼气工程) ? Large biogas plant with modern technology (大型沼气工程) Household biogas digesters Household biogas digesters 户用沼气池 Till the end of 2003,(到2003年为止) ? There are 85,652 household biogas digesters 户用沼气池共有85652户?The total biogas yield is around 17.7million m3 per year, e.g.

313 m3 per family in average. 每年沼气总产量为1.77亿立方米,平均户产沼气量 313立方米 Household biogas digesters Household biogas digesters 户用沼气池 户用沼气池 ? Technology: fully mixed water pressure digester with semi-automatic discharging function 技术:半自动出料全混合水压式沼气池 ? Structure: Underground concrete drum shape 结构:地下混凝鼓形结构 Promote agriculture Promote agriculture 促进农业生产 促进农业生产 Promote forest Promote forest 保护森林 保护森林 Improve ecological Improve ecological Environment Environment 改善生态环境 改善生态环境 Promote hygiene and Promote hygiene and sanitation condition sanitation condition 改善卫生状况 改善卫生状况 Animal husbandry 牲畜养殖 People'

s living 生活 Biogas technologies 沼气技术 Application and Development Tendency Application and Development Tendency 利用和发展趋势 ? This technology is appropriate for individual farmer families with small scale husbandry, e.g to raise 3~5 pigs 小型的个体养殖农户可以采取该技术 ? The farmers with small scale husbandry are mainly in the mountainous and semi- mountainous areas in middle, western and southern parts of Zhejiang Province, in which the local economy is less developed 这些农户主要分布在浙江省经济欠发达的山区和半山区 ? In the northern plains and eastern coastal area in Zhejiang Province, the intensive animal livestock farms in medium and large scale tend to be main type of the husbandry. In these areas, the household biogas digesters become less dominated in the biogas technology development. 在浙北平原和东部沿海地区,大中型集约化养殖场是 养殖业的主要形式,户用沼气技术应用逐渐减少. The household biogas digester plays an important role for income generation in the less developed rural area, due to the following function: 户用沼气池给农民带来了实惠,主要有以下原因: - Saving the expenditure in fuel, or, saving the labor for fuel wood collection 节省了燃料费用和打柴的劳动力 - Saving the expenses on chemical fertilizer 节省了化肥费用 - Increasing the agricultural yield 增加了农业产量 - Improve the quality of products 提高了农产品质量 Large and Medium Sized Large and Medium Sized Biogas Plants Biogas Plants 大中型沼气工程 大中型沼气工程 ? General description 概述 ? Technologies applied in the large and medium sized biogas plants 技术 General description General description 概述 概述 ? There are

114 biogas plants, each volume is larger than

100 m3 容积超过100立方米的沼气工程有114座?The total volume is

37808 m3 总容积是37808立方米 Technologies applied Technologies applied 技术应用 技术应用 ? Fully mixed anaerobic digestion 全混合厌氧发酵 ? UASB+UASB 二级上流式厌氧污泥床 ? UASB+SBR 上流式厌氧污泥床+连续性间歇式反应器 Applicable condition for medium sized biogas plant 中型沼气工程的应用条件 ? In the animal livestock farms with less than

5000 pigs, the appropriate technology is the fully mixed anaerobic digestion and the relevant structure could be underground concrete cylinder type or underground concrete tunnel type 少于5000头猪的养殖场,应采用全混合厌氧消化技 术和相应的地下水泥圆筒式或地下混凝土隧道式消 化池 Applicable condition for Medium Applicable condition for Medium sized biogas plant sized biogas plant 中型沼气工程的应用条件 中型沼气工程的应用条件 ? The reactors volume is less than

500 m

3 反应器容积小于500立方米 ? The integrated utilization of the biogas resources could be realized for supplying fuel gas for households and/or production, providing fertilizer and so on. 提供户用燃料和肥料等沼气综合利用得以实现 ? Since all residues discharged from the plant are used, there is no request to satisfy the environmental standard for the waste water discharging. 由于所有的残余物得到应用,对环境没有负面影响 Applicable condition for Medium sized biogas plant 中型沼气工程的应用条件 ? Since all residues discharged from the plant are used, there is no request to satisfy the environmental standard for the waste water discharging. 由于所有的残余物得到应用,对环境没有负面 影响 Example

1 Example

1 biogas plant built in biogas plant built in Xinxin Xinxin livestock farm livestock farm in Jiaxin 嘉兴欣欣养殖场的沼气工程 Brief introduction 项目简介 ? Built in

2002 建于2002年?Technology: fully mixed anaerobic digestion 技术:全混合厌氧发酵 ? Volume:

300 m3 容积:300立方米 ? Total investment: 420,000 yuan RMB 总投资:42万元 ? Annual treatment capacity :

15000 tons 每年处理废水能力:15000吨?Annual biogas yield: >

20000 m3 每年产沼气大于20000立方米 Resources utilization Resources utilization 资源利用 ? Biogas for fueling the boiler for steam generation 沼气用于锅炉 ? Sludge and slurry for fertilizing the rice land and vegetable growing 沼渣和沼液用于稻田和蔬菜种植 ? Transferring the waste into energy and other useful resources. 变废为能源和其它有用资源 Example

2 Example

2 biogas plant built in biogas plant built in Sanlian Sanlian Farm in Farm in Haining Haining 海宁市三连农场的沼气工程 海宁市三连农场的沼气工程 Brief introduction Brief introduction 项目简介 项目简介 ? Built in

2002 建于2002年?Fully mixed anae........