SEMIZENTRAL

Solutions for Semi-Centralized Supply and Disposal Systems in Urban Areas

Map of SEMIZENTRAL Project Area in Vietnam
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Duration: 04/2008 - 03/2011
Project Area: Hanoi, Capital
Project Website: www.semizentral.de
Coordination: Germany:
Prof. Dr. Ing. Peter Cornel
Institute Waste Water Technology
Technical University of Darmstadt
Petersenstr. 13, 64287 Darmstadt
Phone: +49 (0) 61 51 16 21 48
p.cornel@iwar.tu-darmstadt.de
www.iwar.tu-darmstadt.de
 
Vietnam:
Assoc. Prof. PhD. Viet-Anh Nguyen
Hanoi University of Civil Engineering
55 Giai Phong Road, Hanoi
Phone: +84 (0)4 36 28 45 09
vietanhctn@yahoo.com
www.epe.edu.vn

Project Description

The main concern of the project is a response to the population growth and the resulting infrastructural problems in the old city areas with septic tanks for treating the wastewater. On the one hand the infrastructure cannot follow the fast development of the urban areas. Additionally, the administration is not able to control the development in a sufficient way. On the other hand the city is affected by uncontrolled emptying of the septic tanks, inconsistent waste disposal and pollution of the ground and surface water.

The aim of the project has been the development of an implementation-oriented solution for the renovation of the existing supply and disposal infrastructure with an adapted and integrated infrastructure in the settlement expansion, taking the example of Hanoi City. This had been realised by means of a semi-centralized supply and disposal concept in a rapidly growing city without a sewage system (but with septic tanks), gradually combined with settlement expansions (including waterborne sewage systems).

Important Results

  • Within the framework of the research project a "Semi-centralized Supply and Treatment System" (STS) has been developed. This STS focuses on a district of the city of Hanoi which contains areas of old and new structures and is described as supply area.
  • The supply area has been analyzed via a Geographic Information System (GIS). The use of GIS-based analyses enables the reaction to the dynamically changing surrounding conditions and can be adapted to similar urban areas.
  • The testing and optimization of the integrated sludge and waste treatment has been carried out at lab scale and pilot plants in Germany and Vietnam. The results of these experiments were the foundation for the concept and dimension of the integrated sludge and waste treatment. Moreover the energy and the mass flow inside the supply and treatment centre (STC) have been optimized.
  • Apart from the technical design of all units of the STC and the canal dimensions, the institutional infrastructure was part of the research. The main focus was the sustainable operation of the STC, the development of the transport and operational concept as well as the development of a tariff system.

German partners:

  • Darmstadt University of Technology, Institute IWAR,
  • Passavant Roediger GmbH, Hanau

Vietnamese partners:

  • Hanoi University of Civil Engineering (HUCE)

Photo: Data collection using GPS, Source: SEMIZENTRAL

Photo: Joint data evaluation in the international projectteam, Source: SEMIZENTRAL

Photo: Surfacewater in Hanoi, Source: SEMIZENTRAL

Photo: House building at To Lich canal, Source: SEMIZENTRAL

Photo: Project partners at the pilot plant in Hanoi, Source: SEMIZENTRAL

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info@vd-office.net

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