King County’s West Point Treatment Plant A 90-Day Recovery to NPDES Permit Compliance Following Catastrophic Flooding and Plant Shutdown Due to Effluent Pump Station and Equipment Failures

In Berlin, Germany, the demand for enhanced protection of the environment and the growing economic pressure have led to an increased application of control concepts within the sewage system. A global control strategy to regulate the pumpage of the combined sewage system to the treatment plant was developed and evaluated in a theoretical study. The objective was to reduce CSO. In this paper an extension of the existing control algorithm by information from online rainfall measurement and radar nowcasting is described. The rainfall information is taken into account by two additive terms describing the predicted volume from rainfall runoff. On the basis of numerical simulation the potential of these two complementary forecast terms in the global control algorithm to further reduce CSO is evaluated. The investigations are based on long-time simulations that are conducted with the dynamic flow routing model InfoWorks for three subcatchments of the Berlin drainage system. The results show that at the current Berlin system a CSO reduction of only 0.8% is possible. The effect of the forecast terms is limited by operational constraints. Limits are set to both, the delivery from each individual pump station and the total pumpage to the treatment plant.

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Diagnosis of the ageing of water pipe systems by water quality and structure of iron corrosion in supplied water

Water Science & Technology Water Supply ◽

10.2166/ws.2013.006 ◽

2013 ◽

Vol 13 (1) ◽

pp. 178-183 ◽

Cited By ~ 7

Author(s):

Yoshiyuki Ishiwatari ◽

Iori Mishima ◽

Norihiko Utsuno ◽

Masafumi Fujita

Keyword(s):

Treatment Plant ◽

Principal Component ◽

Water Treatment Plant ◽

Water Supply Systems ◽

Water Pipe ◽

Iron Corrosion ◽

Pipe System ◽

Pump Station ◽

Fe Content ◽

Quality Water

To develop a method for screening ageing of water supply systems by analysing the supplied water's quality, water samples were collected from a water treatment plant, a delivery pump station, two distribution reservoirs and two feed pipes along a water pipe system. Principal component analysis of the water was conducted. In the first principal component, many elements exhibited high factor loadings, whereas the major contributor for the second principal component was iron (Fe). The unlined steel pipe, which was beyond its working lifetime, had a significantly high Fe content in suspended solids. X-ray absorption fine structure (XAFS) analysis showed differences in the abundance ratios of Fe3O4 and α-FeOOH among the sampling points. It was concluded that the concentration and speciation of Fe in supplied water can be a useful index for detecting the ageing of pipes.

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Technical Basis for Radiological Emergency Plan Annex for WTD Emergency Response Plan: West Point Treatment Plant

10.2172/935617 ◽

2005 ◽

Cited By ~ 1

Author(s):

Eva E. Hickey ◽

Daniel J. Strom

Keyword(s):

Emergency Response ◽

Treatment Plant ◽

West Point ◽

Emergency Plan ◽

Radiological Emergency ◽

Emergency Response Plan ◽

Response Plan ◽

Technical Basis

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Understanding the hydrologic impacts of wastewater treatment plant discharge to shallow groundwater: before and after plant shutdown

Environmental Science Water Research & Technology ◽

10.1039/c6ew00128a ◽

2016 ◽

Vol 2 (5) ◽

pp. 864-874 ◽

Cited By ~ 4

Author(s):

Laura E. Hubbard ◽

Steffanie H. Keefe ◽

Dana W. Kolpin ◽

Larry B. Barber ◽

Joseph W. Duris ◽

...

Keyword(s):

Wastewater Treatment ◽

Groundwater Recharge ◽

Wastewater Treatment Plant ◽

Treatment Plant ◽

Shallow Groundwater ◽

Environmental Event ◽

Before And After ◽

Hydrologic Impacts ◽

Plant Shutdown

WWTP cessation is a rare environmental event with far-ranging hydrologic effects. Results have implications for shallow-groundwater recharge and WWTP-derived contamination kilometers downstream from the outfall.

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