The Impact of Uv-Absorbing Wastewater From a Printed Circuit Board Manufacturing Facility on the Performance of a Municipal Uv Disinfection System

Swift, Jay; Wilson, John P.; Johnson, Mike; Jacobsen, Bjarne

doi:10.2175/193864701790863990

Cited by 1 publication

(3 citation statements)

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“…/day) is analogous to pounds /day of a pollutant. Applying the BeerLambert Law to filtered samples allows a mass balance from the point of discharge from the industry to the WWTP headworks (Swift, et al, 2001). A similar mass balance will not always be valid for total absorbance because of deviations from Beer's Law that may occur in unfiltered samples.…”

Section: Equation 6: Total Abs = (σ Diss Abs I ) + Particulate Absmentioning

confidence: 99%

“…Photolithography, as it applies to printed circuit board manufacturing, is a photographic process that applies a photoresist film onto a base or substrate, exposing the film to UV light, developing the film with chemicals, etching exposed areas in the film and cleaning the materials prior to the next step. A number of compounds used in PCB manufacturing strongly absorb ultraviolet light (Swift, et al, 2001).…”

Section: Potential Problem Industriesmentioning

confidence: 99%

“…A mass balance performed on absorbance for the mixture of the PCBM effluent and the similar activated sludge WWTP effluent showed proper closure (agreement between measured values in the mixture and calculated values based on the Beer-Lambert Law) and confirmed the impact of the PCBM effluent on WWTP effluent transmittance. (Swift, et al, 2001).…”

Section: Pharmaceutical Manufacturersmentioning

confidence: 99%

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Implementing Local Limits for the Control of WWTP Effluent Ultraviolet Transmittance

Swift¹,

Wilson²,

Hunter³

2007

Proc Water Environ Fed

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Local limits are developed to implement site-specific prohibitions to protect against the discharge of pollutants at a quantity or rate that may cause pass-through or interference at (or otherwise detrimentally impact) a POTW. 40 CFR Part 403 requires certain POTWs to develop local limits when they develop a pretreatment program and to maintain and enforce these limits for pollutants of concern (POCs). Ultraviolet light is increasingly being used as a means for disinfecting municipal wastewater treatment plant effluent. Compounds responsible for lowering effluent ultraviolet transmittance (UVT) can interfere with UV disinfection and thus may be considered to be POCs appropriate for control through the use of local limits.In this paper, several possible approaches for developing local limits for UVT are described. Actual local limits for UVT developed for industrial discharges for two POTWs in Washington State, and initial monitoring results for industries from one City, are provided.

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Section: Equation 6: Total Abs = (σ Diss Abs I ) + Particulate Absmentioning

confidence: 99%

Section: Potential Problem Industriesmentioning

confidence: 99%

Section: Pharmaceutical Manufacturersmentioning

confidence: 99%

See 1 more Smart Citation

Implementing Local Limits for the Control of WWTP Effluent Ultraviolet Transmittance

Swift¹,

Wilson²,

Hunter³

2007

Proc Water Environ Fed

View full text Add to dashboard Cite

show abstract

The Impact of Uv-Absorbing Wastewater From a Printed Circuit Board Manufacturing Facility on the Performance of a Municipal Uv Disinfection System

Cited by 1 publication

References 0 publications

Implementing Local Limits for the Control of WWTP Effluent Ultraviolet Transmittance

Implementing Local Limits for the Control of WWTP Effluent Ultraviolet Transmittance

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