Koelwater

Many cooling water Installations suffer from mineral precipitation, organic precipitation and corrosion. Generally, these problems are caused by hardness, type of construction material and organic load. These combined problems can only be solved through fundamental approach of the cooling process. This approach is based on an excellent cooling water quality. Ozone plays a very important role in a total inorganic water treatment program.

The use of ozone is not only for a better cooling process and longer lifetime. Ozone makes it possible to maintain a higher concentration factor. By doing this, the water consumption is reduced as well as problems caused by minerals such as calcium carbonate and organic load. An ozone generator in a cooling water system is very economical. O3systems has more than 30 years of experience in this field, and they have shown in several cases that within one year the installation was paid back

Expensive solutions without ozone

Mineral scaling

Calcium carbonate precipitation and magnesi­um oxide precipitation can be solved by softe­ning the water which is done with an ion exchanger . The use of HCL or H2SO4 is also possible. Some types of calcium inhibitors are not economical because they improve biological activity. We use software predicting possible scale problems.

Water savings

Attack of organic components, it is depending on the system parameters. it is possi­ble to maintain very high concentration fac­tors. If the wall temperature is lower than 40 C, in some cases only the evaporated water is supplied to the system.

Preventing Calcium carbonate and mineral deposits

The intake of fresh water means introduc­tion of new material for minerals that can deposit in the system. Other mechanisms are also helping. The absence of an organic layer, and biofilms to prevent glueing of precipitated crystals. These will be drawn to a low flow zone. In low thermical systems, it is depending in the system possible to over saturate the water and use the blow down to get rid of the precipitated free-flowing crystals which could not be glued to another by and organic layers ans biofouling.

Regular Chemical analyses Kation and Anion balance monitor mass balance and efficiency trough a system.

In the casus of the Mars Company we saw that Calcium hardens before and after ozonisation increased with 1 oDH. The organic skin of micro flora was partially destroyed. Read also how i lost in that case a bet about scale stabilsation with EMK fields generated with coils.

Corrosion

Ozone attacks corrosion on two sides. Corro­sion often takes place under a deposit of minerals and (slime) layer. Because of the absence of slime, the pipes are very clean. Ozone produces oxides in the highest form. These metal oxides have specific cha­racter and are capable of producing a corro­sion- resistant film such as has been done by alumina and stainless steel. With ozone, it is possible to maintain the optimum value be­tween the pH and redox potential. It is possi­ble to use the pourbaix diagram and select the passive state of metal. If its necessary!!, we use mineral corrosion inhibitors based on PO4 or PBTC to get the corrosion rate for all material much less than 2 mills per year.

corrosion can be handled by the use of certain solubility. This is done by a mineral acid. the use of an organic corrosion inhibitor is a very expensive possi­bility to reduce the corrosion rate.Organic deposits

These are the key problems in many cooling water installations. A strong biological growth is promoted by the organic load of the water and the organics used by a water treatment program. Because the use of these environmental aspects, these organic water treatment compounds are more and more biodegradable which promote! biological growth very strongly. The biological factor is the most important factor in maintaining a certain concentration factor.

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Largest Coolingtower with O3