Recycling Treated Municipal Wastewater for Industrial Water Use

Recycling Treated Municipal Wastewater for Industrial Water Use Recycling Treated Municipal Wastewater for Industrial Water Use

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TM2: Sampling Plan and Results Recycling Treated Municipal Wastewater for Industrial Water Use The variability in the approximately 25 samples analyzed for each plant in this study indicates that additional sampling is warranted. At a minimum, chloride and TDS should be monitored, with a frequency of twice a week or more. These constituents have a higher variability at each plant than most constituents and are important parameters in assessing the application for a variety of water uses, as well as membrane system sizing. The WWTP effluent sampling program can add other parameters once more defined goals are in place on the potential uses of reclaimed water and the treatment technologies under consideration. 10 Craddock Consulting Engineers In Association with CDM & James Crook TM2-Sampling_0707.doc

TM2: Sampling Plan and Results Recycling Treated Municipal Wastewater for Industrial Water Use Craddock Consulting Engineers 11 In Association with CDM & James Crook TM2-Sampling_0707.doc Alkalinity, mg/L as CaCO3 Hardness, mg/L as CaCO3 350 300 250 200 150 100 380 360 340 320 300 280 260 240 220 200 Error bars represent one standard deviation Blue Lake Empire Metro Seneca Figure 1. Average Alkalinity Concentration Error bars represent one standard deviation Blue Lake Empire Metro Seneca Figure 2. Average Hardness Concentration

TM2: Sampling Plan and Results<br />

<strong>Recycling</strong> <strong>Treated</strong> <strong>Municipal</strong> <strong>Wastewater</strong> <strong>for</strong> <strong>Industrial</strong> <strong>Water</strong> <strong>Use</strong><br />

The variability in the approximately 25 samples analyzed <strong>for</strong> each plant in this study<br />

indicates that additional sampling is warranted. At a minimum, chloride and TDS<br />

should be monitored, with a frequency of twice a week or more. These constituents<br />

have a higher variability at each plant than most constituents and are important<br />

parameters in assessing the application <strong>for</strong> a variety of water uses, as well as<br />

membrane system sizing. The WWTP effluent sampling program can add other<br />

parameters once more defined goals are in place on the potential uses of reclaimed<br />

water and the treatment technologies under consideration.<br />

10 Craddock Consulting Engineers<br />

In Association with CDM & James Crook<br />

TM2-Sampling_0707.doc

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