GUIDELINES FOR THE TREATMENT AND USE OF RECYCLED …

1 GUIDELINES FOR THE TREATMENT AND USE OF RECYCLED WATER Prepared by Hawaii State Department of Health wastewater Branch May 15, 2002 (Replaces November 22, 1993 Version) Page i GUIDELINES for the TREATMENT and Use of RECYCLED Water 5/15/02 Table of Contents Chapters Sections Page I INTRODUCTION .. 1 II DEFINITIONS .. 6 III USES AND SPECIFIC REQUIREMENTS FOR RECYCLED WATER A. USES FOR R-3 WATER .. 15 B. USES FOR R-2 WATER 17 C.

2 USES FOR R-1 WATER .. 19 D. PRECAUTIONS FOR ALL USES OF RECYCLED WATER 22 E. GROUNDWATER RECHARGE .. 27 IV TREATMENT DESIGN PARAMETERS A. TREATMENT PROCESSES .. 28 B. SECONDARY TREATMENT UNIT REQUIREMENTS 30 C. COAGULATION .. 30 D. FILTRATION 33 E. DISINFECTION .. 35 F. ALARMS 37 G. POWER SUPPLY .. 38 H. FLEXIBILITY 39 I.

3 RELIABILITY .. 40 J. OTHER METHODS OF TREATMENT 40 K. STORAGE IMPOUNDMENTS .. 41 L. EMERGENCY BACKUP SYSTEMS 42 V DESIGN PARAMETERS FOR THE DISTRIBUTION OF RECYCLED WATER A. TRANSMISSION LINES .. 43 B. PUMPING FACILITIES 45 C. ON-SITE DISTRIBUTION SYSTEMS .. 46 D. REQUIREMENTS FOR TRUCKING ALL RECYCLED WATER 50 VI ENGINEERING REPORTS AND SUBMITTALS FOR TREATMENT FACILITIES A.

4 BASIS OF DESIGN REPORT- TREATMENT FACILITY .. 52 B. ENGINEERING REPORT- TREATMENT FACILITY 56 C. CONSTRUCTION PLANS- TREATMENT 62 VII APPROVAL PROCESS FOR TREATMENT FACILITIES A. APPROVAL TO CONSTRUCT .. 64 B. CONSTRUCTION INSPECTIONS 64 C. APPROVAL TO OPERATE .. 66 D. PERFORMANCE AND COMPLIANCE INSPECTIONS 68 E. DEACTIVATION OF A TREATMENT FACILITY .. 68 GUIDELINES for the TREATMENT and Use of RECYCLED Water 5/15/02 Page ii Table of Contents (Continued) Chapter Section Page VIII ENGINEERING REPORTS AND SUBMITTALS FOR WATER reuse PROJECTS A.

5 BASIS OF DESIGN REPORT-WATER reuse PROJECT 69 B. ENGINEERING REPORT-WATER reuse PROJECT 82 1. Irrigation Plan .. 82 2. Management Plan 86 3. Public Education Plan .. 88 4. Employee Training Plan 92 5. Vector Control Plan .. 94 6. Monitoring Plan 96 C. CONSTRUCTION PLANS-WATER reuse PROJECT .. 97 IX APPROVAL PROCESS FOR WATER reuse PROJECTS A.

6 APPROVAL TO CONSTRUCT .. 97 B. CONSTRUCTION INSPECTIONS 97 C. APPROVAL TO OPERATE .. 98 D. PERFORMANCE INSPECTIONS 98 E. APPROVAL TO DEACTIVATE A reuse PROJECT .. 99 F. OPERATIONAL PRECAUTIONS .. 99 X COMPLIANCE REPORTS AND SUBMITTALS A. SAMPLING AND ANALYSIS .. 101 B. CALIBRATION 103 C. RECORD KEEPING - TREATMENT FACILITY .. 103 D. RECORD KEEPING WATER reuse PROJECT 105 E.

7 REPORTING PROTOCOL .. 110 Tables Title Page Table 3-1 Summary of Suitable Use For RECYCLED Water 25 Table 8-1 Nutrient Uptake Rates .. 79 Title Page Figure 4-1 TREATMENT Flow Diagram, Secondary TREATMENT Plus Direct Filtration 29 Figure 4-2 TREATMENT Flow Diagram, Secondary TREATMENT Plus Contact Filtration 31 Figure 5-1 R-2-- RECYCLED Water-Do Not Drink Wash Thoroughly With Soap and Drinking Water If Contact Occurs.

8 90 Figure 5-2 R-1- RECYCLED Water-Do Not Drink .. 91 GUIDELINES for the TREATMENT and Use of RECYCLED Water 5/15/02 Page iii APPENDIX A Groundwater Management Committee .. A-1 APPENDIX B Ad Hoc reuse Health Committee B-1 APPENDIX C Ad Hoc reuse Technical Committee Members .. C-1 APPENDIX D Ad Hoc reuse Irrigation Committee Members .. D-1 APPENDIX E GUIDELINES for Groundwater Monitoring Plan .. E-1 APPENDIX F GUIDELINES for Monitoring System Construction Report .. F-1 APPENDIX G Ad Hoc reuse User Committee Members G-1 APPENDIX H Sample Calculations.

9 H-1 APPENDIX I Protocol for Reporting Spills I-1 APPENDIX J GUIDELINES for the Demonstration of Filtration Performance Criteria .. J-1 APPENDIX K UV Disinfection GUIDELINES for the Production of R-1 Water K-1 APPENDIX L Technical References .. L-1 GUIDELINES for the TREATMENT and Use of RECYCLED Water 5/15/02 Page 1 I. INTRODUCTION A combination of growing population and limited potable water resources is reducing the availability and quality of our drinking water supplies.

10 In addition, problems resulting from the disposal of wastewater continue to appear. Therefore, wastewater management practices that protect, conserve and fully utilize water resources are vital to Hawaii. Increasing the safe use of RECYCLED water can greatly assist in meeting water requirements of the State, enhance the environment, and benefit public health by preserving resources upon which public health protection is based. The Department of Health has long been an advocate for water reuse as long as it does not compromise public health and our valuable water resources.