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View the documentSetting new priorities
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Assessing and promoting anaerobic technology: A GTZ project

The highly complex wastewater purification processes used in industrial nations are often not feasible in countries of the South. Systems are needed which are easy to operate and maintain, financially viable and compatible with the environment.

Depending on the local situation anaerobic technology could be - often in combination with other treatment systems - an alternative option to meet these requirements.

In industrialised nations too, this technology is be coming increasingly significant in treating wastewater with a high degree of organic pollution.

First experiences have shown that decentralized anaerobic treatment of liquid and solid waste from households and industry is a low-cost, energy-friendly method particularly suitable for warm climatic zones. No systematic basic criteria are on hand, however, to assist decision-making by planners, investors, operators or supervising bodies. The GTZ project operating from April 1995 to August 1997 aims to work out such criteria.

The goal of the supra-regional project is to compile the potential applications of anaerobic technology used to purify and treat domestic and industrial solid and liquid waste. Together with technical components priority is given to economic factors and regulative policy issues.

The project is comparing the performance parameters of anaerobic technology with those of other technologies and in combination with other wastewater treatment procedures, and critically analysing the process and operating problems encountered in existing plants.

The findings are to be useful decision-making aids in order to improve the treatment of liquid and solid waste in future waste water projects.

Anticipated results:

1. An overview of practical experiences so far available which will be assessed in relation to the given framework conditions.

2. Initial criteria for the use of anaerobic technology, including the necessary technical adjustments on the basis of practical operations.

3. Investigations into the problems met and optimal operation of existing plants in two countries.

4. Institutions to implement measures at national level will be identified and assisted.

National and supraregional organisations in selected project regions (focusing on Latin America) are cooperating the project. Initial findings and publications are scheduled as from 1996.

Contact person at GTZ:
Dr. Dieter Mutz
Division 4140
P.O. Box 5180
65726 Eschborn
Tel +49-6196-79-1277
Fax +49-6196-79-6105