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Hitachi

Water Environment Solutions

Asia : Malaysia

The sanitation situation in the city and suburbs of Kuala Lumpur had deteriorated due to population increases, so we constructed sewage treatment plants with advanced treatment processes (4 plants) and a sludge treatment facility (one plant).
We not only constructed the facilities, but also transferred technology such as operation methods and maintenance management methods.

In the sewage treatment plants we introduce , our projects made it possible for existing oxidation ponds to be modified as modern sewage treatment facilities, and now cleaner treated water can be discharge into rivers.

Case introduction 1

Equipment summary
Amount of treated water 93,000 m³/day
Population in treatment area 373,000 persons
Treatment method Standard activated sludge
Sludge treatment Thickening - Digestion - Dewatering

[Before construction/existing : Oxidation pond]

Photograph: [Before construction/existing: Oxidation pond]

[After completion]

Photograph: [After completion]

Case introduction 2

Equipment summary
Amount of treated water 25,000 m³/day
Population in treatment area 100,000 persons
Treatment method Seguencing Batch Reactor
Sludge treatment Thickening - Dewatering

[Before construction/existing : Oxidation Pond]

Photograph: [Before construction/existing: Oxidation Pond]

[After completion]

Photograph: [After completion]

Asia : Sri Lanka

Water treatment plant A :
A population increase has made it difficult for existing drinking water treatment plants to keep up with the water supply demand. To solve this problem, we provided new facilities (intake pump station, water treatment plant, water supply pump system, and treated water reservoir).
Water treatment plant B :
We performed maintenance and upgrading on the intake pump stations and increased the number of drinking water treatment plants and pumping stations, which increased the treatment capacity from the existing 30,000 m³/day to 45,000 m³/day.

Equipment summary
Facility Drinking water treatment plant
Capacity Water treatment plant A 36,600m³/day
Water treatment plant B 15,000m³/day

Photograph: Water treatment plant A
Water treatment plant A
Intake pump station

Photograph: Water treatment plant A
Water treatment plant A

Photograph: Completion ceremony water treatment A
Completion ceremony
water treatment A

Photograph: Water treatment plant B
Water treatment plant B