F I L T R A T I O N    A P P L I C A T I O N S

Two Tate Andale model KBF 36-inch automated self-cleaning strainers were recently installed for protection of the control valves at a water treatment plant. By incorporating the wedgewire screening design Tate Andale was able to utilize a larger open area and reduce the size of the unit to meet inlet and outlet piping dimensions. Tate Andale manufactures strainers, filtration, and various sizes of wedgewire screen to meet customer specifications with minimum pressure drop and debris loading.
Images

Tate Andale model 1260 Automated Strainer was installed at this waste water treatment plant for filtration of seal water for protection of various water operated equipment through out the plant. The water source was plant effluent on the process side of the plant. An existing strainer was replaced due to Tate Andale's superior straining ratio and construction driving the decision at the plant to purchase Tate Andale Equipment. The controls package allows for the unit to cycle by pressure differential or 24 hour clock to insure that the wedgewire elements are cleaned on a regular basis. Backwash water is provided from the process stream with an actuated drain valve that cycles with the backwash commands from the control panel to remove debris that is collected on the filter media.
Images

C H E M I C A L     A  P P L I C A T I O N S  

Cooling Tower Project

C-Square Industries recently completed a cleaning of a 1200-ton cooling tower utilizing the product. The system was estimated at having 2500 lbs of scale (calcium carbonate) restricting water and sufficient airflow through the cooling tower. Prior to the chemical cleaning, water temperatures to the Chiller were 90 0 F. Upon inspection of the cooling tower, the recommendation was to triple the normal amount of the product usually required to clean the tower. Thirty 55-gallon barrels were shipped to the location of this Fortune 500 company. Work commenced on Friday, Saturday and Sunday. Monday operations revealed that 85% of the tower media was clear. An additional six 55-gallon barrels were sent to remove scale build up on the internal layer of the tower media. The cooling tower and chiller were placed in operation with water temperature reading at 78.5°F from a previous 90°F. A diesel generator and portable chiller were shut down eliminating an expense of $15,000 dollars a week to the customer in fuel and rental costs.

M A J O R     B R E W E R Y    P R O J E C T

Another success story has taken place at a major brewery. The removal of calcium carbonate was performed on two ammonia condensers. The units had efficiency losses of 30 percent depending on ambient temperatures. As illustrated in our photographs, the tube bundles were covered with scale similar to the water distribution pipe with nozzles. After three cleaning periods of utilizing the product (4 to 5 hour periods or 1.5 days) the tubes cleaned down to the bare metal. Flow from the header pipes and nozzles was improved with the removal of calcium that was present in the water distribution system. The only scale deposits left on the system were the distribution pipes where the product was not able to reach due to the nozzle spray pattern.

Illustrated in these pictures is the effects of the product in contact with the calcium carbonate that creates a foaming action and release of carbon dioxide. This is an indicator that the product is working to remove water formed deposits.

After the cleaning, galvanizing was done by a local contractor to prevent oxidation of the ammonia tubes. Upon completing this task the units were placed on line. The operators were able to run the units dry with just ambient temperatures providing enough cooling in order not to trip the units into a shut down mode. This could not be accomplished with the units in the previous condition. (Efficiencies of an evaporative ammonia condensers can be reduced by 30 percent if 1/16 to 1/32 inch of scale accumulates on the tube section of the condenser.) Estimated efficiency of the units at the brewery is now expected to be about 95 percent or better.
Images

F A N S   &   B L O W E R S
Specialty Construction

This fan was constructed in three pieces to allow for ease of installation in a confined area. The fan was disassembled and then re-assembled for operation.