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Family and Community Size Biogas Plants in Khulna: Present Situation and Future Recommendation

Q. Hamidul Bari
Department of Civil Engineering, Khulna University of Engineering & Technology, Bangladesh

M Wahiduzzaman
Assistant Engineer
LGED, Dhaka

S. M. Moniruzzaman
Department of Civil Engineering, Khulna University of Engineering & Technology, Bangladesh

S. Sen
Executive, Construction Department, Dom-Inno Developments Ltd

M. A. Haque
Executive, Construction Department, Dom-Inno Developments Ltd

Abstract/ Executive Summary:

The main purpose of this study was to explore the present status of family size plus community size biogas plants and to make recommendations for the future. The study was conducted for Fultala Upazilla of Khulna district. Data was collected on 31 biogas plants through a survey method using a systematic questioner from 2003 to 2004. Out of 31 plants, 27 are of family type and 4 are of community type. The results show that (i) Significant reduction in fuel utilization is observed in most of the cases during their operation period, which certainly has a positive impact; (ii) In most of the cases the main reason for the closing of the family size plants is lacking cow dung due to reduction of the number of cows. The operational problems are leakage in a gas dome, clogging of gas pipe and inactive key of the burner, which can be designated as a minor problem; and (iii) Most of the community size plants were in running condition as they do not depend on cow dung rather they use human excreta. They also do not have many complaints. In this case, the situation is completely opposite and encouraging as compared to family size plants. Specific recommendations to restart the present biogas plants and guidelines for future plants are also presented in the paper.

Keywords: Biogas, Fuel, Energy, Solid waste, Operation, Maintenance

Location: Fultala Upazilla of Khulna district

Start Date: 00-00-2003

End Date: 00-00-2004

Program Area: Resource Development and Management

Commodity: Bio-gas

Objectives:

In spite of all these benefits, the wide application and expected gain of this technology were not possible. For that, this research was undertaken to identify the practical problems in the wide application of biogas technology through a systematic field survey in Fultala Upazilla of Khulna. Specific recommendations to restart the present biogas plants in the rural area of Bangladesh and guidelines for future plants are also presented in the paper.

Methodology:

The study was confined at rural areas of Fultala Upazila of Khulna district. Data were collected from 31 biogas plant holders (27 family size plus community size plants) during 2003-04. Data were collected from the respondents through a personal interview/field survey using an interview schedule with a pre-tested questionnaire.

In the case of family size biogas plants, parameters were: Family size, number of cows (provide cow-dung for the plants), other excreta, present demand of fuel (in %), Deshudge/week, utilization of sludge as fertilizer, fish food, fuel boray. In case of community size biogas plants, similar parameters were selected except community size (in persons) instead of the family size. The collected data were analyzed for interpretation.

Source of Information: Journal of Engineering Science 01(02), 2010, 53-57

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The following conclusions can be drawn: 1. A significant reduction in fuel utilization is observed in most of the cases during their operation period, which certainly has a positive impact. 2. In most cases, the main reason for the closing of the family size plants is lacking cow dung due to a decrease in the number of cows. The operational problems are leakage in the gas dome, clogging of gas pipe, and inactive key of the burner, which could be designated as minor problems. 3. Most of the community size plants were in running condition as they do not depend on cow dung rather they use human excreta. They also do not have many complaints. In this case, the situation is completely opposite and encouraging as compared to family size plants. 4. Special steps should be taken to re-start all the closed plants and to install the new plants according to the guidelines presented in the previous section.

Knowledge Management: Journal