Recycling Treated Municipal Wastewater for Industrial Water Use
Recycling Treated Municipal Wastewater for Industrial Water Use Recycling Treated Municipal Wastewater for Industrial Water Use
Section 2 Implementation Considerations Table 2.4. Examples of State Water Reuse Criteria for Selected Nonpotable Applications Fodder Crop Irrigation 1 Processed Food Crop Irrigation 2 Food Crop Irrigation 3 Restricted Recreational Impoundments 4 State Treatment Quality Limits Required Treatment Quality Limits Required Treatment Quality Limits Required Treatment Quality Limits Required No detect. fecal Secondary No detect. fecal Secondary Arizona 1,000 fecal coli/100 ml Secondary Not covered Not covered coli/100 ml Filtration coli/100 ml Filtration 2 NTU Disinfection 2 NTU Disinfection California Not specified Oxidation Not specified Oxidation 2.2 total coli/100 ml 2 NTU Oxidation Coagulation 5 Filtration Disinfection 2.2 total coli/100 ml Oxidation Disinfection Colorado Not covered Not covered Not covered Not covered Not covered Not covered Not covered Not covered Florida 200 fecal coli/100 ml 20 mg/L CBOD 6 20 mg/l TSS 7 Secondary Disinfection No detect. fecal coli/100 ml 20 mg/L CBOD 5 mg/L TSS Secondary Filtration Disinfection Use prohibited Use prohibited No detect. fecal coli/100 ml 20 mg/L CBOD 5 mg/L TSS Secondary Filtration Disinfection New Mexico (Policy) 1,000 fecal coli/100 ml 75 mg/L TSS 30 mg/L BOD Not specified Not covered Not covered Use Prohibited Use Prohibited 100 fecal coli/100 ml 30 mg/L BOD 30 mg/L TSS Not specified Utah 200 fecal coli/100 ml 25 mg/L BOD 25 mg/L TSS Secondary Disinfection No detect. fecal coli/100 ml 10 mg/L BOD 2 NTU Secondary Filtration Disinfection No detect. fecal coli/100 ml 10 mg/L BOD 2 NTU Secondary Filtration Disinfection 200 fecal coli/100 ml 25 mg/L BOD 25 mg/L TSS Secondary Disinfection Texas 200 fecal coli/100 ml 20 mg/L BOD 15 mg/L CBOD Not specified 200 fecal coli/100 ml 20 mg/L BOD 15 mg/L CBOD Not specified Use prohibited Use prohibited 20 fecal coli/100 ml 3 NTU 5 mg/L BOD or CBOD Not specified Washington 240 total coli/100 ml Oxidation Disinfection 240 total coli/100 ml Oxidation Disinfection 2.2 total coli/100 ml 2 NTU Oxidation Coagulation Filtration Disinfection Oxidation 2.2 total coli/100 ml Disinfection 1 In some states more restrictive requirements apply where milking animals are allowed to graze on pasture irrigated with reclaimed water. 2 Physical or chemical processing sufficient to destroy pathogenic microorganisms. Less restrictive requirements may apply where there is no direct contact between reclaimed water and the edible portion of the crop. 3 Food crops eaten raw where there is direct contact between reclaimed water and the edible portion of the crop. 4 Recreation is limited to fishing, boating, and other nonbody contact activities. 5 Not needed if filter effluent turbidity does not exceed 2 NTU, the turbidity of the influent to the filters is continually measured, the influent turbidity does not exceed 5 NTU for more than 15 minutes and never exceeds 10 NTU, and there is capability to automatically activate chemical addition or divert the wastewater should the filter influent turbidity exceed 5 NTU for more than 15 minutes. 6 CBOD – Carbonaceous biochemical oxygen demand; where BOD is the same as Total BOD 7 TSS – total suspended solids 2-8 Craddock Consulting Engineers In Association with CDM & James Crook TM1-Sec2_0707.doc
Table 2.4. Examples of State Water Reuse Criteria for Selected Nonpotable Applications (cont’d) State Arizona Section 2 Implementation Considerations Craddock Consulting Engineers 2-9 In Association with CDM & James Crook TM1-Sec2_0707.doc Restricted Access Irrigation 1 Quality Limits 200 fecal coli/100 ml California 23 total coli/100 ml Colorado Florida New Mexico (Policy) Utah Texas 126 E.coli/100 ml 30 mg/L TSS 200 fecal coli/100 ml 20 mg/L CBOD 6 20 mg/l TSS 7 200 fecal coli/100 ml 30 mg/L BOD 30 mg/L TSS 200 fecal coli/100 ml 25 mg/L BOD 25 mg/L TSS 200 fecal coli/100 ml 20 mg/L BOD 15 mg/L CBOD Washington 23 total coli/100 ml Treatment Required Secondary Disinfection Oxidation Disinfection Secondary Disinfection Secondary Disinfection Not specified Secondary Disinfection Not specified Oxidation Disinfection Unrestricted Access Irrigation 2 Quality Limits No detect. fecal coli/100 ml 2 NTU 2.2 total coli/100 ml 2 NTU 126 E.coli/100 ml 3 NTU No detect. fecal coli/100 ml 20 mg/L CBOD 5 mg/L TSS If within 100 ft of dwelling: 5 fecal coli/100 ml 10 mg/L BOD 3 NTU No detect. fecal coli/100 ml 10 mg/L BOD 2 NTU 20 fecal coli/100 ml 3 NTU 5 mg/L BOD or CBOD 2.2 total coli/100 ml 2 NTU Treatment Required Oxidation Filtration Disinfection Secondary Coagulation 4 Filtration Disinfection Secondary Filtration Disinfection Secondary Filtration Disinfection Not specified Secondary Filtration Disinfection Not specified Oxidation Coagulation Filtration Disinfection Toilet Flushing 3 Industrial Cooling Water 4 Quality Limits No detect. fecal coli/100 ml 2 NTU 2.2 total coli/100 ml 2 NTU Treatment Required Oxidation Filtration Disinfection Oxidation Coagulation 4 Filtration Disinfection Not covered Not covered No detect. fecal coli/100 ml 20 mg/L CBOD 5 mg/L TSS 100 fecal coli/100 ml 30 mg/L BOD 30 mg/L TSS No detect. fecal coli/100 ml 10 mg/L BOD 2 NTU 20 fecal coli/100 ml 3 NTU 5 mg/L BOD or CBOD 2.2 total coli/100 ml 2 NTU Secondary Filtration Disinfection Quality Limits Treatment Required Not covered Not covered 2.2 total coli/100 ml 2 NTU 126 E.coli/100 ml 30 mg/L TSS No detect. fecal coli/100 ml 20 mg/L CBOD 5 mg/L TSS Oxidation Coagulation 4 Filtration Disinfection Secondary Disinfection Secondary Filtration Disinfection Not specified Not covered Not covered Secondary Filtration Disinfection Not specified Oxidation Coagulation Filtration Disinfection 200 fecal coli/100 ml 25 mg/L BOD 25 mg/TSS 200 fecal coli/100 ml 20 mg/L BOD 15 mg/L CBOD 2.2 total coli/100 ml 2 NTU 1 Classification varies by state; generally includes irrigation of cemeteries, freeway medians, restricted access golf courses, and similar restricted access areas. 2 Includes irrigation of parks, playgrounds, schoolyards, residential lawns, and similar unrestricted access areas. Secondary Disinfection Not specified Oxidation Coagulation Filtration Disinfection 3 Not allowed in single-family residential dwelling units. 4 Cooling towers where a mist is created that may reach populated areas. 5 Not needed if filter effluent turbidity does not exceed 2 NTU, the turbidity of the influent to the filters is continually measured, the influent turbidity does not exceed 5 NTU for more than 15 minutes and never exceeds 10 NTU, and there is capability to automatically activate chemical addition or divert the wastewater should the filter influent turbidity exceed 5 NTU for more than 15 minutes. 6 CBOD – Carbonaceous biochemical oxygen demand; where BOD is the same as Total BOD 7 TSS – total suspended solids
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Table 2.4. Examples of State <strong>Water</strong> Reuse Criteria <strong>for</strong> Selected Nonpotable Applications (cont’d)<br />
State<br />
Arizona<br />
Section 2<br />
Implementation Considerations<br />
Craddock Consulting Engineers 2-9<br />
In Association with CDM & James Crook<br />
TM1-Sec2_0707.doc<br />
Restricted Access Irrigation 1<br />
Quality Limits<br />
200 fecal<br />
coli/100 ml<br />
Cali<strong>for</strong>nia 23 total coli/100 ml<br />
Colorado<br />
Florida<br />
New Mexico<br />
(Policy)<br />
Utah<br />
Texas<br />
126 E.coli/100 ml<br />
30 mg/L TSS<br />
200 fecal coli/100 ml<br />
20 mg/L CBOD 6<br />
20 mg/l TSS 7<br />
200 fecal coli/100 ml<br />
30 mg/L BOD<br />
30 mg/L TSS<br />
200 fecal coli/100 ml<br />
25 mg/L BOD<br />
25 mg/L TSS<br />
200 fecal coli/100 ml<br />
20 mg/L BOD<br />
15 mg/L CBOD<br />
Washington 23 total coli/100 ml<br />
Treatment<br />
Required<br />
Secondary<br />
Disinfection<br />
Oxidation<br />
Disinfection<br />
Secondary<br />
Disinfection<br />
Secondary<br />
Disinfection<br />
Not specified<br />
Secondary<br />
Disinfection<br />
Not specified<br />
Oxidation<br />
Disinfection<br />
Unrestricted Access Irrigation 2<br />
Quality Limits<br />
No detect. fecal<br />
coli/100 ml<br />
2 NTU<br />
2.2 total coli/100 ml<br />
2 NTU<br />
126 E.coli/100 ml<br />
3 NTU<br />
No detect. fecal<br />
coli/100 ml<br />
20 mg/L CBOD<br />
5 mg/L TSS<br />
If within 100 ft of<br />
dwelling:<br />
5 fecal coli/100 ml<br />
10 mg/L BOD<br />
3 NTU<br />
No detect. fecal<br />
coli/100 ml<br />
10 mg/L BOD<br />
2 NTU<br />
20 fecal coli/100 ml<br />
3 NTU<br />
5 mg/L BOD or<br />
CBOD<br />
2.2 total coli/100 ml<br />
2 NTU<br />
Treatment<br />
Required<br />
Oxidation<br />
Filtration<br />
Disinfection<br />
Secondary<br />
Coagulation 4<br />
Filtration<br />
Disinfection<br />
Secondary<br />
Filtration<br />
Disinfection<br />
Secondary<br />
Filtration<br />
Disinfection<br />
Not specified<br />
Secondary<br />
Filtration<br />
Disinfection<br />
Not specified<br />
Oxidation<br />
Coagulation<br />
Filtration<br />
Disinfection<br />
Toilet Flushing 3 <strong>Industrial</strong> Cooling <strong>Water</strong> 4<br />
Quality Limits<br />
No detect. fecal<br />
coli/100 ml<br />
2 NTU<br />
2.2 total coli/100<br />
ml<br />
2 NTU<br />
Treatment<br />
Required<br />
Oxidation<br />
Filtration<br />
Disinfection<br />
Oxidation<br />
Coagulation 4<br />
Filtration<br />
Disinfection<br />
Not covered Not covered<br />
No detect. fecal<br />
coli/100 ml<br />
20 mg/L CBOD<br />
5 mg/L TSS<br />
100 fecal coli/100<br />
ml<br />
30 mg/L BOD<br />
30 mg/L TSS<br />
No detect. fecal<br />
coli/100 ml<br />
10 mg/L BOD<br />
2 NTU<br />
20 fecal coli/100<br />
ml<br />
3 NTU<br />
5 mg/L BOD or<br />
CBOD<br />
2.2 total coli/100<br />
ml<br />
2 NTU<br />
Secondary<br />
Filtration<br />
Disinfection<br />
Quality Limits<br />
Treatment<br />
Required<br />
Not covered Not covered<br />
2.2 total coli/100 ml<br />
2 NTU<br />
126 E.coli/100 ml<br />
30 mg/L TSS<br />
No detect. fecal<br />
coli/100 ml<br />
20 mg/L CBOD<br />
5 mg/L TSS<br />
Oxidation<br />
Coagulation 4<br />
Filtration<br />
Disinfection<br />
Secondary<br />
Disinfection<br />
Secondary<br />
Filtration<br />
Disinfection<br />
Not specified Not covered Not covered<br />
Secondary<br />
Filtration<br />
Disinfection<br />
Not specified<br />
Oxidation<br />
Coagulation<br />
Filtration<br />
Disinfection<br />
200 fecal coli/100 ml<br />
25 mg/L BOD<br />
25 mg/TSS<br />
200 fecal coli/100 ml<br />
20 mg/L BOD<br />
15 mg/L CBOD<br />
2.2 total coli/100 ml<br />
2 NTU<br />
1 Classification varies by state; generally includes irrigation of cemeteries, freeway medians, restricted access golf courses, and similar restricted access areas.<br />
2 Includes irrigation of parks, playgrounds, schoolyards, residential lawns, and similar unrestricted access areas.<br />
Secondary<br />
Disinfection<br />
Not specified<br />
Oxidation<br />
Coagulation<br />
Filtration<br />
Disinfection<br />
3 Not allowed in single-family residential dwelling units.<br />
4 Cooling towers where a mist is created that may reach populated areas.<br />
5 Not needed if filter effluent turbidity does not exceed 2 NTU, the turbidity of the influent to the filters is continually measured, the influent turbidity does not exceed 5 NTU <strong>for</strong><br />
more than 15 minutes and never exceeds 10 NTU, and there is capability to automatically activate chemical addition or divert the wastewater should the filter influent turbidity<br />
exceed 5 NTU <strong>for</strong> more than 15 minutes.<br />
6 CBOD – Carbonaceous biochemical oxygen demand; where BOD is the same as Total BOD<br />
7 TSS – total suspended solids
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