How to troubleshoot Ion exchangers?

Many factors influence the time it takes to diagnose equipment breakdown when the ion exchanger is abnormal. In power plants, ion exchangers are commonly employed in the water treatment process.

The ion exchanger is where the resin goes through its chemical reaction. When the equipment has problems such as lower production, deterioration of effluent quality, and drop in operational economic indicators, it might be difficult to correctly establish the cause of the failure due to various elements affecting the chemical reaction process.Because most power plants don't have many spare ion exchangers, if the equipment fails during peak water use, if it can be diagnosed quickly, it will almost certainly cut down on troubleshooting time and ensure the power plant's safe operation.

Troubleshooting of ion exchangers

1. Cause exclusion of operation and analytical test techniques

When the water supply is limited and spare equipment is scarce, the operators are vulnerable to stress as a result of equipment failure. Errors induced by unintentional events frequently cause issues to develop and disappear on a regular basis, and may necessitate thorough monitoring to determine the cause.

2. Examination of the commissioning report as well as the original data

The start-up and adjustment test work for the ion exchanger should be finished within three months, and the further adjustment and test report of the operation should be completed within six months to determine the ion exchange equipment under normal process conditions. For equipment failure diagnosis, many characteristics such as water flow resistance, self-water rate and regeneration circumstances, regeneration consumption level, commissioning records, and original data are important.

3. Fault detection in the presence of quality deterioration

The effluent quality is the most important metric for determining how well chemical desalination equipment is working. The conductivity and silica content of the demineralized water are much greater than the diagnostic values during the operation of the equipment, indicating effluent quality degradation. Whether the water quality is qualified or not, it can be assumed that the equipment's water quality has degraded at this time.

Examine to see if the equipment needs to be regenerated on a regular basis. The exclusion approach of troubleshooting can reduce the time spent troubleshooting ion exchanger equipment and narrow the extent of the problem.

4. Equipment output reduction fault diagnosis

The reduction in desalination equipment output can be expressed as a reduction in the number of ions exchanged in the equipment cycle as well as a reduction in the equipment's water production volume per unit time. The total number of ions in the raw water influences the growth or decrease in periodic water production. If surface water or multi-source raw water with variable raw water quality is used, the impact of changes in raw water quality on the equipment's periodic water output should be considered.

Conclusion

A comprehensive raw water analysis should be performed every quarter at the power plant; if there are several water sources in the raw water system, the assessment of raw water quality should be done every month if conditions permit, to provide a basis for diagnosing ion exchange equipment issues. Excessive flow resistance of the ion exchange equipment is usually the reason of reduced water production per unit time period. Check to see if the water entry and output water distribution mechanisms, as well as the resins within the exchanger, are skewed or clogged. As a result, it is vital to make an immediate decision and open the manhole door throughout the inquiry process in order to eliminate and maintain the equipment.

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