Case Studies


Rizal Drinking Water Treatment Plant (Manila)

  • Client: Manila Water
  • Type of contract: Design, Build & Operate
  • Year of delivery: 2017
  • Capacity: 50,000 m3/day
  • Technologies: Actiflo®, Actiflo® Carb, Filtraflo™ DC, BWRO

Manila Water awards a major new contract to Veolia Water Technologies in 2016, for their new Rizal drinking water treatment plant in Manila, Philippines. Veolia Water Technologies works in consortium with a local construction firm, to deliver this Design, Build, Operate (DBO) contract.

The scope under the contract includes the construction of a raw water intake, transmission mains, water treatment plant, treated water main, and brine outfall. After completion, the plant is operated by Veolia Water Technologies for one year before final hand over.

The project is urgently required to supplement the public water supplies in the area. The city of Manila suffers from raw water resource shortages, so Manila Water have decided to abstract water from Laguna de Bay to supplement potable water supplies to Rizal province. This brackish water source presents challenges which are addressed by an innovative and comprehensive treatment plant making use of VEOLIA’s unique technology portfolio and expertise. The water treatment plant will utilise pre-ozonation chemical treatment, Actiflo®, Actiflo Carb®, Filtraflo™ DC, and brackish water reverse osmosis to produce 50,000 m3/d of treated water, with provisions for future expansion.


Bonifacio Waste Water Treatment Plant Upgrading (Manila)

  • Client: Bonifacio Water Corporation
  • Type of contract: Design & Build
  • Year of delivery: 2017 (est.)
  • Capacity: 20,000 m³/day  
  • Technology: Multiflo™, Alizair™, Azenit™

Asia D&B Municipal has won a contract to refurbish and extend Fort Bonifacio wastewater treatment plant in Manila, which was first constructed by the Group over 12 years ago.

The original plant, with a capacity of 5 Mld, has in recent years become overloaded in terms of both flow and load. This new turnkey EPC contract will refurbish the existing plant, and construct new treatment lines, to increase the total capacity to 20 Mld while catering for the increased pollution loading. 

The selected process is activated sludge, together with Multiflo Mono primary sedimentation.


San Antonio Waste Water Treatment Plant

Del Monte & San Antonio Waste Water Treatment Plant (Quezon City)

  • Client: Maynilad Water Services Inc.
  • Type of contract: Design, Build & Operate
  • Year of delivery: 2012
  • Capacity: Del Monte WWTP - 3,510 m³/day, San Antonio WWTP - 3,300 m³/day  
  • Technologies: AnoxKaldnes™ MBBR, Multiflo™, Alizair™
  • 1 year operation contract by Veolia after construction’s completion 

Our client, Maynilad Water Services, Inc. (Maynilad), is the water and wastewater service provider for the 17 cities and municipals that comprise the West Zone of the Greater Metro Manila area.

Veolia Water Technologies Philippines was awarded the contract to build San Antonio & Del Monte WWTP to deal with the challenges:

- Population density in the West Zone of Philippines (16,111 people/km²) was 5,399% higher than the population density in the Philippines

- Acquiring appropriately-sized lots for Wastewater Treatment Plants

- Negative perception about having a wastewater treatment facilities in residential areas

Thanks to Veolia's compact sewage treatment technologies: Multiflo™, AnoxKaldnes™ MBBR, and Alizair®, Maynilad successfully saved 40% of the plant footprint, which efficiently helped the company address the big challenge in the limited construction area due to the population density. 



Sungai Selangor, Phase 2, Stage 1&2, Water Supply (Selangor)

The Sungai Selangor Phase 2 Water Supply Scheme (SSP2) at Kuala Selangor, located in the State of Selangor, is the largest water supply scheme in Malaysia, and the second largest in South East Asia.

The project comprises the construction of a 950,000 m3/day water treatment plant including intake works, treatment works, reservoirs as well as raw water and treated water pipelines. 

The construction was carried out in the following two stages each of 475,000 m3/day capacity:

- Stage 1 commenced in March 1996 and was completed in October 1998. This stage included a storage reservoir of 186 million litres capacity located in Matang Pagar.

- Stage 2 commenced in October 1997 and was completed in December 2000. Another storage reservoir of 23 million litres capacity was built in Batu Arang.

The SSP2 comprises a unique clarification stage with the implentation of the Actiflo® clarifier. It is similar to a conventional systems but, through the introduction of microsand at the flocculation stage and lamella plates in the settling tank, it can achieve highly efficient hydraulic loading and a reduction in the overall time required for coagulation and flocculation.

It has long been recognised that when river water is used to supply a treatment plant it can be difficult to clarify because of the intermittent presence of algae and the degradation of raw water quality during the rainy season when a rapid increase in turbidity can be expected. Therefore, sudden increases in turbidity are managed by:

- increasing the dose of polyelectrolyte (to flocculate the additional particles); and

- increasing the sand recirculation flow rate (to increase the washing speed of the microsand).

At the Sungai Selangor water works, the raw water turbidity can be as high as 2,100 N.T.U. Using the techniques described above, the turbidity levels of the settled water are continuously maintained well below the guaranteed level of 5 NTU.


Changi Water Reclamation Plant - High Rate Clarification System (Singapore)

  • Client: Public Utilities Board
  • Type of contract: Design & Build
  • Year of delivery: 2017
  • Capacity: 200,000 m3/day
  • Technology: Actiflo® 

Veolia Water Technologies Asia Pacific has won a contract to provide the Actiflo® process at PUB’s Changi Reclamation plant in Singapore.

The Changi Water Reclamation plant receives waste water from Singapore's deep tunnel sewerage system. PUB was looking for a compact settler step to receive peak flows in order to cap the flow going forward for full biological treatment. Actiflo® responds perfectly to PUB's needs due to its treatment performance, compactness, and rapid start up. The Actiflo® installation will treat a capacity of 200,000 m3/d using four units.


Hau Giang Drinking Water Treatment Plant (Hau Giang Province)

Veolia Water Technologies Vietnam Municipal signed a D&B contract with Aqua One for a greenfield drinking water treatment plant with a capacity of 100,000 m3/d.

The contract includes the complete design, supply, installation and testing & commissioning of the intake works and treatment plant. The water will be sold to local consumers and transmitted to other surrounding cities. VWT’s Multiflo™ and Filtraflo™ TGV technologies are used, providing a robust process with significant land savings. The small footprint enables future phases for additional capacity to be planned within the limited site area.


Second Ho Chi Minh City Water Environment Improvement Project. Package J: Expansion of Wastewater Treatment Plant. (Ho Chi Minh City)

  • Client: Urban Civil Works Construction – Investment Management Authority of HCMC
  • Type of contract: Construction, Equipment Supply & Installation
  • Year of delivery: 2018 (est.)
  • Capacity: 469,000 m3/day  
  • Project financed by JICA

Veolia Water Technologies Asia D&B, in consortium with Hitachi Ltd and POSCO E&C, are awarded a turnkey contract by the Urban Civil Works Construction-Investment Management Authority of Ho Chi Minh City, Vietnam, for the expansion of a large-scale wastewater treatment facility in the city. This project is funded by loan assistance from the Japanese government.

This project aims to improve Ho Chi Minh City’s urban and domestic sanitation by expanding the daily processing capacity of the existing sewage treatment plant from 141,000 m3 to 469,000 m3. The expanded capacity would be sufficient to meet the wastewater treatment needs of a large proportion of the city, and would make the plant the largest WWTP in Vietnam, and one of the largest in South East Asia.