ISO 16075-4:2021 Guidelines for treated wastewater use for irrigation projects —Part 4: Monitoring

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Guidelines for treated wastewater use for irrigation projects —Part 4: Monitoring是于2021‑05‑24发布的ISO标准,适用于全球范围。

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Guidelines for treated wastewater use for irrigation projects —Part 4: Monitoring
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INTERNATIONAL STANDARD ISO 16075-4:2021

Guidelines for treated wastewater use for irrigation projects —

Part 4: Monitoring

1 Scope

This document provides recommendations regarding:

— monitoring the quality of treated wastewater (TWW) for irrigation;

— monitoring irrigated plants;

— monitoring the soil with regard to salinity;

— monitoring natural water sources in neighbouring environments;

— monitoring the quality of water in storage reservoirs.

It puts emphasis on sampling methods and their frequency. Regarding the methods of analysis, this document refers to standard methods or, where not available, to other bibliographical references.

NOTE In cases where a monitoring plan already exists, these recommendations can be integrated into this plan. This is notably the case when a broader approach of risk management is implemented, such as the water [16]

safety plans (serving as a model for sanitation safety plans) developed by WHO .

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, Water reuse — Vocabulary

ISO 160751‑ , Guidelines for treated wastewater use for irrigation projects — Part 1: The basis of a reuse project for irrigation

3 Terms d efinitions, and abbreviated terms

3.1 Terms and definiti ons

For the purposes of this document, the terms and definitions given in ISO 20670 and ISO 16075‑1 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/

ISO 16075-4:2021

3.2 Abbreviated terms

BOD biochemical oxygen demand

CFU colony forming units

COD chemical oxygen demand

DO dissolved oxygen

HDPE high‑ density polyethylene

PP polypropylene

QA quality assurance

QC quality control

SAR sodium adsorption ratio

SS suspended solids

TKN total Kjeldahl nitrogen

TP total phosphorus

TSS total suspended solids

TWW treated wastewater

VOC volatile organic compounds

WW wastewater

WWTP wastewater treatment plant

4 Monitoring of the quality of TWW for irrigation

4.1 General

The development and implementation of an appropriate monitoring strategy is a crucial step for the health and environmental safety of water reuse projects. This compliance monitoring is performed usually at the outlet of the wastewater treatment plant.

Monitoring can be undertaken for a range of purposes, and for each specific objective, different parameters may be selected. For example, water quality monitoring can be implemented for the following purposes:

a) human health protection: monitoring programmes include selected microbial indicators at concentrations that depend on health risk (risk of direct contact, risk related to the type of crops, etc.), as well as few other parameters, which indicate the reliability of operation of the wastewater treatment (e.g. turbidity, suspended solids, BOD, residual chlorine, etc.);

b) prevention of adverse effect on crops: monitored parameters (named also agronomic parameters) include nutrients, soluble salts, sodium, trace elements, etc.);

c) prevention of adverse effects on environment (natural water sources and soil);

d) prevention of clogging of irrigation system, e.g. drip and sprinkler irrigation.

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