Philippine National Standard for Wastewater Reuse for Irrigation (PDF)

PAES 002:2013 PHILIPPINE NATIONAL STANDARD PNS/BAFS/PAES 232:2017 ICS 65.060.35 Wastewater Re-use for Irrigation BUREAU OF AGRICULTURE A...

PAES 002:2013 PHILIPPINE NATIONAL STANDARD PNS/BAFS/PAES 232:2017 ICS 65.060.35 Wastewater Re-use for Irrigation BUREAU OF AGRICULTURE AND FISHERIES STANDARDS BPI Compound Visayas Avenue, Diliman, Quezon City 1101 Philippines Phone (632) 920-6131; (632) 455-2856; (632) 467-9039; Telefax (632) 455-2858 E-mail: [email protected] DEPARTMENT OF Website: www.bafps.da.gov.ph AGRICULTURE PHILIPPINES PHILIPPINE NATIONAL STANDARD PNS/BAFS/PAES 232:2017 Wastewater Re-use for Irrigation Foreword The formulation of this national standard was initiated by the Agricultural Machinery Testing and Evaluation Center (AMTEC) under the project entitled “Enhancement of Nutrient and Water Use Efficiency Through Standardization of Engineering Support Systems for Precision Farming” funded by the Philippine Council for Agriculture, Aquaculture and Forestry and Natural Resources Research and Development - Department of Science and Technology (PCAARRD - DOST). As provided by the Republic Act 10601 also known as the Agricultural and Fisheries Mechanization Law (AFMech Law of 2013), the Bureau of Agriculture and Fisheries Standards (BAFS) is mandated to develop standard specifications and test procedures for agricultural and fisheries machinery and equipment. Consistent with its standards development process, BAFS has endorsed this standard for the approval of the DA Secretary through the Bureau of Agricultural and Fisheries Engineering (BAFE) and to the Bureau of Philippine Standards (BPS) for appropriate numbering and inclusion to the Philippine National Standard (PNS) repository. This standard has been technically prepared in accordance with BPS Directives Part 3:2003 – Rules for the Structure and Drafting of International Standards. The word “shall” is used to indicate mandatory requirements to conform to the standard. The word “should” is used to indicate that among several possibilities one is recommended as particularly suitable without mentioning or excluding others. ii  PAES 002:2013 PHILIPPINE NATIONAL STANDARD PNS/BAFS/PAES 232:2017 Wastewater Re-use for Irrigation 1 Scope This standard provides quality limits and prescribed quantity of wastewater to be reused for irrigation. 2 References The following normative documents contain provisions through which reference in this text constitute provisions in this National Standard: Department of Agriculture Administrative Order No. 26 Series of 2007: Guidelines on the Procedures and Technical Requirements for the Issuance of a Certification Allowing the Safe Re-Use of Wastewater for Purposes of Irrigation and Other Agricultural Uses PNS/BAFS/PAES 223:2017 Design of a Pressurized Irrigation System – Part A: Sprinkler Irrigation PNS/BAFS/PAES 224:2017 Design of a Pressurized Irrigation System – Part B: Drip Irrigation 3 Definitions For the purpose of this standard, the following definitions shall apply: 3.1 access areas areas open for public entry such as golf courses, public and private parks, playgrounds, schoolyards and playing fields, residential landscapes and industrial park landscapes 3.2 algal bloom overgrowths of algae in water producing dangerous toxins in fresh or marine water 3.3 contamination introduction of substances not found in the natural composition of water that make the water less desirable or unfit for intended use 3.4 effluent discharges from known sources which is passed into a body of water or land, or wastewater flowing out of a manufacturing plant, industrial plant including domestic, commercial and recreational facilities 3.5 effluent standard any legal restriction or limitation on quantities, rates, and/or concentrations or any combination thereof, of physical, chemical or biological parameters of effluent which a person or point source is allowed to delivery into a body of water or land 3.6 loading limit allowable pollutant-loading limit per unit of time, which the wastewater generator is permitted to discharge into any receiving body of water or land. 3.7 pollutant any substance, whether solid, liquid, gaseous or radioactive, which directly or indirectly alters the quality of any segment of the receiving water body or land resource so as to affect or tend to affect adversely any beneficial use thereof, or is hazardous or potentially hazardous to health, or imparts objectionable odor, temperature change or physical, chemical or biological change to any segment of the water body or land, or is in excess of the allowable limits or concentrations or quality standards specified in contravention of the condition, limitation or restriction prescribed in these guidelines 3.8 restricted areas areas with limited entry such as freeway landscape, highway medians and other similar areas 3.9 re-use taking wastewater from one industry or process, treating it and then using it in another process or industry such as for irrigation, as liquid fertilizer and for aquaculture 3.10 setback distance distance from the perimeter of the irrigation area to the community or area of concern that is sensitive to contamination 2 3.11 waste any material either solid, liquid, semi-solid, contained gas or other forms resulting from industrial, commercial, mining, or agricultural operations, or from community and household activities that is devoid of usage and discarded 3.12 wastewater waste in liquid state containing pollutants 4 Sources of Wastewater 4.1 Livestock 4.1.1 Piggeries 4.1.2 Beef and dairy feedlots 4.2 Agriculture and food industrial processes 4.2.1 Food handling 4.2.2 Processing and manufacturing plants 4.2.3 Sugar mills, refineries and distilleries 4.2.4 Slaughterhouses and poultry dressing plants 4.3 Aquaculture 4.3.1 Reservoirs 4.3.2 Hatcheries 4.3.3 Ponds 4.3.4 Tanks 4.4 Domestic and municipal sewage 4.5 Industrial and commercial establishments 5 Quality of Treated Wastewater for Irrigation 5.1 Treated wastewater shall be tested for quality. The following standard analytical procedures for measurement may be used: 5.1.1 DENR Administrative Order 35 series of 1990 – Revised Effluent Regulations 5.1.2 Standard Methods for the Examination of Water and Wastewater by the American Public Health Association 5.1.3 US-EPA Methods for Water Analysis 5.2 Laboratory analysis shall be conducted by the Department of Agriculture and DENR recognized laboratories. 5.3 The required limits on treated wastewater quality and trace elements for irrigation are shown in Table 1 and Table 2, respectively. 3 6 Quantity of Wastewater for Irrigation 6.1 The hydraulic loading rate shall be greater that the irrigation requirement. 6.2 Runoff or ponding in the ground surface shall be avoided such that the application rate shall be less than the intake rate (Table 4). 6.3 Soil from the proposed irrigation area shall be subjected to chemical characterization. 4  Table 1. Limits on wastewater quality for irrigation Crop Irrigation Landscape Food eaten raw and Food crops Parameter Unit Method of Analysis Non-food Irrigation not commercially commercially crops processed processed For crop productivity and protection of environment Bicarbonates1 mg/L