ISO 16075-1:2020 Guidelines for treated wastewater use for irrigation projects —Part 1: The basis of a reuse project for irrigation

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Guidelines for treated wastewater use for irrigation projects —Part 1: The basis of a reuse project for irrigation是于2020‑11‑30发布的ISO标准，适用于全球范围。

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INTERNATIONAL STANDARD ISO 16075-1:2020

Guidelines for treated wastewater use for irrigation projects —

Part 1: The basis of a reuse project for irrigation

1 Scope

This document contains guidelines for the development and the execution of projects intending to use treated wastewater (TWW) for irrigation and considers the parameters of climate and soil.

The purpose of this document is to provide guidance on all elements of a project using TWW for unrestricted and restricted irrigation, including design, materials, construction, and performance, when used for the following:

— irrigation of agricultural crops;

— irrigation of public and private gardens and landscape areas, including parks, sport fields, golf courses, cemeteries, etc.

These guidelines are intended to provide assistance for the benefit of users of TWW for irrigation. The guidelines relate to the widespread and common ranges of water quality rather than exceptional or unique ones and are intended for the use of professionals, such as irrigation companies (designers and operators), agricultural extension officers or advisors, water companies (designers and operators), local authorities and water utilities. The use of these guidelines by users might require additional specifications.

None of the parts of this document are intended to be used for certification purposes.

These guidelines suggest the parameters of TWW quality. These parameters include the following:

— agronomic parameters: nutrients (nitrogen, phosphorus and potassium), salinity factors (total salt content, chloride, boron, and sodium concentration) and heavy metals’ concentration;

— pathogen presence.

Each of these parameters can have possible impacts on the crops, soil, and public health. The guidelines discuss the possibility of preventing the contaminants’ addition during wastewater production and the ability to remove them during the course of treatment.

Contaminants of emerging concern (such as pharmaceuticals and personal care product residuals) are outside the scope of this document since up to day, there is no evidence of adverse effects on human health or environment via irrigation with TWW or via the consumption of crops irrigated with TWW.

The project should be designed in accordance with the sanitary quality of the TWW in order to avoid disease transmission by the pathogens in the water.

The use of these guidelines is encouraged to ensure consistency within any organization engaged in the use of treated wastewater.

These guidelines provide the basis for a healthy, hydrological, environmental and agronomic conscious design, operation, monitoring, and maintenance of an irrigation system using treated wastewater.

ISO 16075-1:2020

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 20670:2018, Water reuse — Vocabulary

3 Terms, d efinitions , and abbreviated terms

For the purposes of this document, the following terms and definitions given in ISO 20670 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp

— IEC Electropedia: available at http://www.electropedia.org/

3.1 Term and definitio ns

3.1.1

additional disinfection

disinfection of TWW in a water reuse project intended to raise the quality of the TWW just before irrigation in addition or not to previous disinfection in WWTP and/or a reservoir (3.1.26)

Note 1 to entry: See ISO 20670:2018, 3.21 for the definition of "disinfection”.

Note 2 to entry: See ISO 20670:2018, 3.84 for the definition of "water reuse”.

3.1.2

boom sprinkler

mobile sprinkling machine (3.1.17) composed of two symmetrical pipes (booms) with sprinkler (3.1.37) nozzles distributed in one of the pipes where the sprinkler action is complemented by a gun sprinkler placed at each end of both pipes

Note 1 to entry: The nozzles work through a reaction effect (similar to a hydraulic tourniquet) which drives the boom rotation at a desired speed.

3.1.3

category A: very high quality TWW

raw wastewater (3.1.25) which has undergone physical and biological treatment, filtration and disinfection and it average quality is: BOD: ≤5 mg/l (Max. 10 mg/l); TSS: ≤5 mg/l (Max. 10 mg/l); Turbidity: ≤3 NTU (Max. 6 NTU); Termo-tolerant coliforms (95 %ile): ≤10 no./100 ml (Max. 100 no./100 ml)

Note 1 to entry: See ISO 20670:2018, 3.27 for the definition of "filtration”.

Note 2 to entry: See ISO 20670:2018, 3.21 for the definition of "disinfection”.

Note 3 to entry: See ISO 16075‑ 2 Table 1 for more TWW quality information values.

3.1.4

category B: high quality TWW

raw wastewater (3.1.25) which has undergone physical and biological treatment, filtration and disinfection, and it's average quality is: BOD: ≤10 mg/l (Max. 20 mg/l); TSS: ≤10 mg/l (Max. 25 mg/l); Termo-tolerant coliforms (95 %ile): ≤200 no./100 ml (Max. 1 000 no./100 ml)

Note 1 to entry: See ISO 20670:2018, 3.27 for the definition of "filtration”.

Note 2 to entry: See ISO 20670:2018, 3.21 for the definition of "disinfection”.

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