Case

Growth in population, production and tourism is highly dependent on water

Vietnam: To meet the increasing needs for water supply, an extensive expansion project was initiated in Da Nang City. The project is a national key project and is part of an overarching plan in Da Nang’s overall development.

The Hoa Lien water treatment plant is the largest plant in Da Nang, an important port city on the Eastern coast of Vietnam. To meet increasing water needs as a result of an ongoing rise in population as well as growing production and tourism sectors, it was planned to expand the plant’s capacity.

Hopefully, the project will also be able to help prevent contamination of the local environment: Rivers, especially in the southern area of the city, are vulnerable to salt contamination in the dry season. The discharge of untreated domestic and industrial wastewater as well as careless disposal of garbage by residents along the rivers are two other reasons for river and lake water contamination. As a result, old facilities have been forced to stop operation, leading to water shortage in the area. Therefore, the Hoa Lien plant pumps river water from other areas along the river, which are not salty, to treat and supply to the residents.

Hawaco Central, a technical consultancy company based in Da Nang, was established in 2018. After having worked on a few projects together, AVK Vietnam and Hawaco Central have established a good and promising partnership, where we are able to offer high quality products for distribution as well as feasible solutions for projects in the region of Central Vietnam.

10.6 km of raw water pipeline

The expansion of the Hoa Lien plant features the construction of a spillway on the Cu De River to source water, with a 727m² raw water pumping station, with a daily capacity of 120,000m³ as well as DN1400 raw water pipelines with a daily capacity of 120,000m³. In a following phase 2, the plant is capable of upgrading to 240,000m³ of water.

A 1.4 m diameter and 10.6 km long raw water pipeline will be placed underground, running from the pumping station in Hoa Bac Community’s Nam My Village to the water treatment plant in Hoa Lien Community’s Quan Nam 1 Village. Ultimately, the expanded project will help to increase the capacity of water supply for residents of Da Nang city.

With the support of other AVK Group companies such as AVK International A/S, AVK Polska, Wouter Witzel Eurovalve and AC.MO S.r.l., AVK Vietnam and Hawaco put together an ideal solution for the project. Our valves meet the strict technical specifications of the installation and can ensure quality in coastal climates and potentially saline water sources.

Drinking water certifications were essential

An important factor in the product evaluation process that turned out to be our valves’ many certifications for drinking water by independent international organisations such as WRAS, DVGW and KIWA. The project stakeholders were completely assured with our products’ quality in meeting optimal operation cost, minimising water loss, and can rest assured that the water quality is kept safe for the residents and tourists in Da Nang city.

Complex installation

The dam had to be constructed between two rainy seasons in a very complex terrain. Therefore, to ensure the safety of the project, adjusting to the downstream is an extremely important matter. The construction of a raw water pipeline in a mountainous terrain entails many difficulties in the transportation of machinery, materials, and workers. AVK and Hawaco have been happy to support this important project in Vietnam.

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