Empirical Experiment Report
Cooling Tower - Algae and Scale
■Empirical experiment of Mechacera system was started in real at one of our customers plant in Sagamihara, Japan on 7/21/2017 after the preliminary investigation on 16/6/2017. Result from empritical experiment is reported with photo and comment here.
■Photo below are on 6/16/2017, before the experiment started. Water in the Cooling tower had been treated without use of drugs and supplied with only fresh water for long time and "Algae" was in highly bredis and taking half a day cleaning. This Empirical experiment was a challenge whether it can solve the problems or not.
Cooling Tower: EBARA SHINWA, Water flow rate: 1950 l / min.
Mechacera equipment：Marucheko 2 sets、Drug Administrating Floater 2 sets（21/7/2017～4/8/2017）、reduced number of setting equipments for adjustment to Marucheko 1 set and Floater 1 set (4/8/2017～19/9/2017）
Drug：Trichloroisocyanuric acid（Solid chlorine）
Observation Points Front side
Observation Points Back side
Cooling Tower inside (lower water tank)
16/6/2017 CT Lower Water TankSome foam on the surface of the water.
In the floating ball right back is covered with algae. Regular cleaning, has been done rather than a special drug injection.
21/7/2017 (launch day）State right after setting 2 sets of Marucheko and Floater (for Trichlorotheanull acid
21/7/2017 (1 hour after set)1 hour after setting Marcheko & Floater 2 sets. Some "bubbles" and "dirty" of Calcium carbonate, Magnesium carbonate, Silica are observed in Lower tank.
See the effect by Marucheko
24/7/2017 (3 days later)Bubbles from degraded organic matter, calcium carbonate, magnesium carbonate, silica, etc.
4/8/2017 (14 days later)For adjust power of performance of the Marcheko and floater, reduced them to 1 set.
Bubbles still are occurred by oxidation of algae and organic matter
Observation Point No.1 (Louver Fin, left side)
4/8/2017 (14 days later) No.1Although we do not grasp state of the louvers inside, Algae getting wither (bleaching) and original color of Louver are appeared outside of all Louvers
4/8/2017 (14 days later) No.1The algae disappeared considerably and the ground color of the louver can be confirmed
Observation Point No.2 (Louver Fin, right side)
21/7/2017（launch day) No.2There are considerable algae inside the louvers due to many years of algae breeding condition
24/7/2017 (3 days later) No.2Algae growing on the outside of the louvers are whitening (withering) in places although the whole surface is also breeding
4/8/2017 (14 days later) No.2Algae disapperes and the ground color of the louvers can be seen throughout
4/8/2017 (14 days later) No.2The light gray color inherent to the louvers can be confirmed even green color of the algae overall
18/8/2017 (29 days later) No.2Algae disapperes and the ground color of the louvers can be seen throughout
Observation Point No.3 (Louver Fin, right side)
4/8/2017（14 days later）No.３The green color of algae has withered in a considerable part and disappeared, and it has changed to the original gray color of the louver
4/8/2017 (14 days later) No.3It is effective for Algae by Marucheko. As the Algae are lost, circulating water passing (through the upper sprinkling tub inside louver) correctly contacts the louver falls into the lower tank
Observation Point No.4 (Louver Fin, another side of cooling tower)