Micro-bubble Generator (KTM)

Introduction
Nikuni has developed a unique and compact Micro-Bubble Generator - the KTM - that creates pressurized air-enriched whitewater with highly reliable performance, insuring excellent stability in processes and systems such as DAF units in water treatment plants

Applications

Waste water treatment plants for food, beverage, dairy, seafood, poultry processing, laundries, bakeries etc.
Dringking water treatment and disalination plants
Municipal waste water plant and power station
Automotive and chemical plants
Petroleum or oil & gas plants
Paper mill or textile industries

Features

Three functions in one pump
– Simultaneously draws in air and water,dissolves air with its turbine impeller, and pumps pressurized water to flotation tank or other process
Highly efficient air-water dissolution
– Precision turbine pump technology and unique design make possible extremely high levels of efficiency in dissolving air into water
Simplified DAF operation with stable pump performance
– The multifunctional KTM eliminates the need for ancillary equipments and simplifies DAF operation
Compact in size and small footprint
– Easily retrofit or upgrade existing DAF systems
Minimal power consumption and save maintenance cost
– Highly efficient process with small pump and motor, no compressor power required, while the simple and robust structure of the KTM minimizes maintenance cost

Performance

Coupling connection / Base-mounted model

Model	50Hz frequency			Required motor power (kW / pole)	60Hz frequency			Required motor power (kW / pole)
Model	Water flow rate L / min	m³ / Hr	Air flow rate nL / min (Range)*	Required motor power (kW / pole)	Water flow rate L / min	m³ / Hr	Air flow rate nL / min (Range)*	Required motor power (kW / pole)
KTM20F / N	17	1.0	1.3 (0 to 5)	0.75 kW / 2 P	22	1.3	1.7 (0 to 5)	0.75 kW / 2 P
KTM25F / N	25	1.5	2.0 (0 to 5)	1.5 kW / 2 P	42	2.5	3.3 (0 to 5)	1.5 kW / 2 P
KTM32F / N	50	3.0	4.0 (0 to 10)	2.2 kW / 2 P	67	4.0	5.3 (0 to 10)	2.2 kW / 2 P
KTM40F / N	80	4.8	6.4 (0 to 20)	3.7 kW / 2 P	117	7.0	9.3 (0 to 20)	3.7 kW / 2 P
KTM50F1 (D) / S1(D)	133	8.0	11.0 (0 to 20)	5.5 kW / 4 P	192	11.5	15.0 (0 to 20)	7.5 kW / 4 P
KTM50F2 (D) / S2(D)	200	12.0	16.0 (0 to 20)	7.5 kW / 4 P	250	15.0	20.0 (0 to 30)	11 kW / 4 P
KTM50F3 (D) / S3(D)	250	15.0	20.0 (0 to 30)	11 kW / 4 P	313	18.0	26.0 (0 to 40)	15 kW / 4 P
KTM65F2 (D) / S2(D)	333	20.0	27.0 (0 to 40)	15 kW / 4 P	467	28.0	37.0 (0 to 60)	18.5 kW / 4 P
KTM80SF (D) / S (D)	700	42.0	56.0 (0 to 80)	22 kW / 4 P	967	58.0	77.0 (0 to 100)	30 kW / 4 P

Close-coupled / Monoblock model

Model	50Hz frequency				60Hz frequency
Model	Water flow rate L/min	m³/hr	Air flow rate nL/min (Range)	Motor Power	Water flow rate L/min	m³/hr	Air flow rate nL/min (Range)	Motor Power
KTM20FD / ND -04P (S)	17	1.0	1.3 (0 to 5)	0.56 kW / 2 P	Not available for 60Hz frequency
KTM20FD / ND -07P (S)	Not available for 50Hz frequency				22	1.3	1.7 (0 to 5)	0.975 kW / 2 P
KTM25FD / ND -07P	25	1.5	2.0 (0 to 5)	0.975 kW / 2 P	Not available for 60Hz frequency
KTM25FD / ND -15P	Not available for 50Hz frequency				50	3.0	4.0 (0 to 10)	2.2 kW / 2 P
KTM32FD / ND -15P	50	3.0	4.0 (0 to 20)	1.975 kW / 2 P	80	4.8	6.4 (0 to 20)	3.7 kW / 2 P
KTM40FD / ND -22P	80	4.8	6.4 (0 to 20)	3.7 kW / 2 P	80	4.8	6.4 (0 to 20)	3.7 kW / 2 P

Remark
* 1 Values in brackets show the recommended range of flow meter or rotamenter.
2 Model code and material
-F = Wetted parts in cast iron with stainless steel impeller & shaft.
-N/S = Wetted parts in standard SS304 material. SS316 as optional material is also availalble.
3 Flow rates reflected to KTM discharge pressure at 0.4 Mpa / 4 Bar / 56 psi and 8% of air injection.