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Recycling Treated Municipal Wastewater for Industrial Water Use

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Section 2<br />

Implementation Considerations<br />

Table 2.7. Recommended Cooling <strong>Water</strong> Quality<br />

(Makeup <strong>for</strong> Recirculating Systems)<br />

Parameter Recommended Limit (mg/L)<br />

Alkalinity 350<br />

Aluminum 0.1<br />

Ammonia 24<br />

Bicarbonate 200<br />

Calcium 50<br />

Chloride 500<br />

Hardness 650<br />

Iron 0.5<br />

Manganese 0.5<br />

Phosphorous 1.0<br />

Silica 50<br />

Total Suspended<br />

100<br />

Solids<br />

Sulfate 200<br />

Total Dissolved Solids 500<br />

Source: Adapted from <strong>Water</strong> Pollution Control Foundation [1989]<br />

and Goldstein et al. [1979].<br />

Table 2.8. Recommended <strong>Industrial</strong> Boiler Feed <strong>Water</strong> Quality<br />

Recommended Limit (mg/L)<br />

Parameter Low Pressure Medium Pressure High Pressure<br />

(700 psig)<br />

Alkalinity 350 100 40<br />

Aluminum 5 0.1 0.01<br />

Ammonia 0.1 0.1 0.1<br />

Bicarbonate 170 120 48<br />

Calcium * 0.4 0.01<br />

Chemical Oxygen<br />

Demand<br />

5 5 1<br />

Copper 0.5 0.05 0.05<br />

Dissolved Oxygen 2.5 0.007 0.007<br />

Hardness 350 1.0 0.07<br />

Iron 1.0 0.3 0.05<br />

Magnesium * 0.25 0.01<br />

Manganese 0.3 0.1 0.01<br />

Silica 30 10 0.7<br />

Suspended Solids 10 5 0.5<br />

TDS 700 500 200<br />

Zinc * 0.01 0.01<br />

Source: Adapted from various sources.<br />

2-18 Craddock Consulting Engineers<br />

In Association with CDM & James Crook<br />

TM1-Sec2_0707.doc

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