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Water and Wastewater Plant Directory
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Pekambaru, Riau Province, Indonesia
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PT Riau Andalan Pulp & Paper Company Water Treatment Plant
Kerinei
Pekambaru, Riau Province
Indonesia
Contact Information:
Contact:
Email:
info@aprilasia.com
Telephone: 62 (761) 491 000
Fax: 62 (761) 95278
Plant Operation: Industrial
Processing: Water
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Web site:
http://www.aprilasia.com/environment_mill.html
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Plant/Process Description:
At Kerinei in Riau Province on the Indonesian island of Sumatra, the PT Riau Andalan Pulp and Paper company operates the world’s largest single chain pulp operation. Full scale production requires 18,000 m3/h of treated water for process and boiler feed. Against international bidding, contracts for both the filtration and demineralization plants were awarded to total water management company, Ion Exchange (India) Ltd. The client’s consultant was Jaakko Poyry of Finland.
Source of water for the water treatment plant is the Kampar River; water is pumped from a riverside pump house through a five kilometer long pipeline. Due to its high content of organic matter and iron, the water is colored. Raw water is fed to a cascade aerator where it comes into contact with atmospheric air. Aeration of the water and release of carbon dioxide from the water, both help to precipitate iron.
From the aerator water passes into four clarifiers of solids-contact type, each treating 4500 m3/h of water. These clarifiers are very efficient and offer distinct advantages in terms of less floor area, lower chemical consumption and better sludge consistency. Moreover, this type of clarifier is much less affected by changes in flow rates and in raw water characteristics.
Chemicals such as alum, caustic soda, chlorine and polymers are mixed with the raw water. Clarified water passes through a series of eight filters with unique features. The filtering medium – a mixture of sand and anthracite – allows depth filtration and longer filter runs. Backwash water is provided by filter beds in service. Therefore, no backwash pumps are required as with conventional gravity filters, resulting in significant savings in installation and power costs. The backwash (dirty) water is recycled back to the clarifier and hence there is no wastage of water. Filtered water is then stored in a tank, from which it is pumped for process use, as well as for supply to the demineralization plant.
The filters and clarifiers are operated through a digital control system from the control room. Water from the filtration plant is de-chlorinated as it passes through a 6 x 270 m3/h demineralization plant; each stream includes a cation unit, degasser, an anion unit and a mixed bed unit. The cation and anion units are designed for countercurrent regeneration. This helps to produce treated water of the highest quality with minimum consumption of chemicals. Water treated in the mixed bed unit is then stored in two large demineralization tanks.
The entire plant has been engineered for maximum convenience of operation and management. It has also been specially designed for outdoor operation. The plant is fully automated with instruments that provide signals through a digital control system.
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Owner:
The Asia Pacific Resources International Holdings Ltd.
Web site:
http://www.aprilasia.com/
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Operating Company:
The Asia Pacific Resources International Holdings Ltd.
Web site:
http://www.aprilasia.com/
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Directions:
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Disclaimer:
Water and Wastewater.com provides the information on
this page for reference purposes only. We do not certify
the accuracy of the information provided by third-party
individuals for this listing.
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