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Managing Chemical and Physical Requisites Related to Water Quality Control Systems
Completion requirements
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Requirements to Maintain Optimal Physical Water Quality Factors
Materials required for maintaining optimal physical water quality factors depend on the method of irrigation employed on the farm. It will however always include replacement parts for the filter system and spare emitters. Although this forms part of the maintenance program for filters and the irrigation system, which will be dealt with in the guide for Irrigation, the reasons for blockages of emitters and filters must be logged to assist in water quality management.
Example: Logging Water Quality
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ORCHARD NUMBER 15 |
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Irrigation Type: |
Drippers |
XYZ-dripper 2.3 litres per hour |
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Total Number: |
2064 |
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Replacements |
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Date |
No. Replaced |
Reasons |
Actions/Remarks |
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25/08/04 |
13 |
Salt deposits, soluble in acid |
Note for an acid wash, check pH of incoming water |
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16/10/04 |
21 |
Salt deposits, soluble in acid |
Organise acid rinse scheduled for 25/10/04 |
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30/10/04 |
0 |
- |
Acid rinse successful |
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Requirements To Maintain Optimal Chemical Water Quality Factors
The requirements for maintaining optimal chemical water quality factors depend on the quality of the water and the extent to which the composition of the water needs to be adjusted. Before this can be attempted, the quality of the water and the volumes required per month must be known.
Chemicals that will be required include the following:
- Acids such as nitric acid, phosphoric acid or sulphuric acid acidify the water.
- Sterilising agents like sodium hypo chloride or hydrogen peroxide.
- Additives to lower and/or buffer the pH of the water when applying pest control chemicals.
- A list should be available of the volumes of each of these chemicals required per month and the stocks must be ordered in time.