Monitoring Of Pretreatment Plant

One of the most crucial aspects for ensuring trouble-free operation is the regular monitoring of feed water condition throughout the pre-treatment system and inspection of associated equipment and pipe-work. Analysing samples of feed water at each treatment stage enables a good assessment to be made of existing plant conditions. Careful inspection of pipe-work, dosing tanks and cartridge filters can identify the presence of biofilm slime requiring sanitisation procedures to prevent continued widespread microbiological growth. If a poor scale inhibition programme is in use or the pre-treatment has failed, visual inspection may reveal colloidal particles, iron or inorganic scale on the micron cartridge filters. These are always positioned immediately prior to membrane filtration.

Closer plant monitoring could prevent many system failures. Regular monitoring should be routine with data taken and plotted either electronically or by hand. Graphs should be prepared, dated and filed appropriately with any unusual or erratic results highlighted with explanations and comments. Important parameters are - pressure drop, output, pH, temperature, conductivity, and TOC. Computerised data logging packages incorporate alarm systems to alert the operator when parameters have exceeded fixed limits.

Table 2: Pre-Treatment Failures
0 0

Post a comment