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Work progressing well at West Sussex treatment works

Work is progressing well on improvements at two of Southern Water’s West Sussex wastewater treatment works.

The company is carrying out a £1.3 million upgrade of its Handcross Wastewater Treatment Works and investing more than £860,000 at its Wivelsfield Wastewater Treatment Works.

The projects, to improve the quality of the wastewater returned to the environment, began last autumn.

Southern Water is installing ferric dosing systems at both sites to reduce the level of phosphate in the treated wastewater in line with new Environment Agency guidelines.

Phosphate raises the amount of nutrients in water and may lead to algal blooms which can affect the balance of ecosystems. It is present in wastewater from a variety of sources including washing powders.

The ferric reacts with the phosphate to create a solid material that can be easily removed in the wastewater treatment process.

Two new treatment tanks are being built at Handcross. Meanwhile at Wivelsfield, the three filter beds are being refurbished with new filter materials which are home to the bacteria that digest the waste.

Southern Water supplier Morrison Utility Services is carrying out the improvements.

The work at Wivelsfield is expected to be completed in the spring and Handcross, which has been slightly delayed, should be finished by July.

Southern Water Project Manager Les Kelley said: “Work is progressing well on our improvements at Wivelsfield and the project remains on schedule. The work at Handcross will take slightly longer than expected because of complications relocating a power cable but is otherwise going well.”

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