Submersible Aerator SP SERIES

General

Supmersible Aerator SP SERIES a result of rapid industrial development, enormous quantity
of wastewater were generated, in the meantime large quantities of household waste water were also resulted from our daily lives.

All these have affected the living quality and damaged the environmental ecology. For this purpose, KIRA has been making every endeavor in researching and developing waste water treatment equipment for years, now KIRA produces a series of industrial submersible aerators and surface aerators, which are capable of effectively treating wastewater and enable BOD & COD rate in the wastewater to meet standard.

These areators have been widely used in industrial wastewater treatment plant and small-scale municipal sewage treatment plant inside and outside the country.

Characteristics(refer to fig.A)

Submersible aerator-SP utilizes the rotation of the impeller
coupled directly to the motor to create a centrifugal force, which
makes local low pressure suck in water. Meanwhile the entrance
of the Impeller results in vacuum to draw air from atmosphere.
Water and air mix in the channel of aeration housing. The air-
water-mixture current is discharged speedily by the centrifugal
force.

Due to the water spurting extremely strong, make the fluid create convection and circulation effectively. Moreover the air becomes tiny bubbles.

On the one hand the bubbles rise slowly, on the other hand the atmosphere oxygen is dissolved in water.

Because the bubbles are tiny and numberless, their surface area is large, it makes the oxygen transfer rate per unit BHP higher than other types of aerator.

Features

Submersible motor directly drive, low noise, high efficiency.
It has uinque design for gas mixing chamber whose air intake quantity is big. Air can be mixed well with water. It also has mixing function while aerating.
Adopt double mechanical seal, can extend usefullife of motor.
Dual protection:
1.Using a high filtration rate of the filter meah to prevent particles from entering aerator body while maintaining the air input capacity.
2.Enlarge the space between the impeller and the mixing chamber to avoid the impeller being stuck by foreign material.
4 Poles motor with 50Hz frequency for maximize Aerator performance
* Stainless Chain are provided together with Aerator unit for ease of install
Qualified Silencer for reducing operating noise is presented together with Aerator unit

Construction

NO.	Name	Material
NO.	Name	GB	JIS
1	Cable	2RNCT	2RNCT
2	The motor cover	HT200	FC200
3	Ballbearing	-	-
4	O-ring	NBR	NBR
5	Motor casing	HT200	FC200
6	Mainshaft	2Cr13	SUS420J1
7	Bracket	HT200	FC200
8	Mechanical seal	C-Al203	C-Al203
9	Lubricant	ISOVG32	ISOVG32
10	Mechanical seal	SIC-SiC	SIC-SIC
11	Oil cover	HT200	FC200
12	Aeration housing	HT200	FC200
13	Bottom cover of aeration housing	HT200	FC200
14	Entrance panel board	ZGOCr18Ni9	SUS304
15	Screw	A2-70	A2-70
16	Gasket	3Cr13	SUS420J2
17	Impeller	ZGOCr18Ni9	SUS304
18	Ballbearing	-	-
19	Stator	-	-
20	Rotor	-	-
21	Motor cover	HT200	FC200
22	Lifting rings	0Cr18Ni9	SUS304

Installation

For better and easier maintenance of the aerator, following instructions shall be noticed:

The setter should be fixed on concrete base of the aeration basin (Before the aeration basin was filled with waste water).
When designing the strength of the bridge (As shown in below Fig.) construction, the warping and
the lifting equipment should be considered.
The guide tubes should be prepared in advance and it is advisable to use stainless steel tubes.
The air pipes should be fixed if necessary depending upon the actual condition.

Performance Curves

Oxygen transfer specific curves

Performance Spec

Type	Power		Operation range (m.)	Min-max water depth (m.)	Air inlet pipe diameter (mm.)	The maxium intake of air (m3/h)	Oxygentransfer capacity (kgO2/h)	Weight (kg)
Type	hp	kW	Operation range (m.)	Min-max water depth (m.)	Air inlet pipe diameter (mm.)	The maxium intake of air (m3/h)	Oxygentransfer capacity (kgO2/h)	Weight (kg)
SP41.5-1.5	2	1.5	1.0-2.0	1.0-3.0	40	40	2-1	135
SP42.2-2	3	2.2	2.5-5.0	1.0-4.0	50	60	3-2	147
SP44-2.5	5.5	4	3.0-6.0	1.0-4.0	65	90	5-3	160
SP45.5-2.5	7.5	5.5	3.5-7.0	1.0-4.0	65	150	9-5	315
SP47.5-3	10	7.5	4.5-9.0	1.5-4.5	80	170	13-7	320
SP411-3	15	11	5.0-10.0	1.5-4.5	80	260	18-8	368
SP415-4	20	15	5.8-11.5	1.5-4.5	100	340	23-10	385
SP418.5-4	25	18.5	5.9-11.8	2.0-5.0	100	360	29-14	432
SP422-4	30	22	6.0-12.0	2.0-5.5	100	440	36-19	456
SP430-6	40	30	7.3-14.5	2.0-6.0	150	510	41-21	998
SP437-6	50	37	7.5-15.0	2.0-6.0	150	600	52-22	1080
SP445-6	60	45	7.8-15.5	2.0-6.0	150	700	62-25	1155
SP455-6	75	55	8.0-16.0	2.0-6.0	150	780	82-40	1200

Installation Dimensions

Type	Dimensions (mm)
Type	A	B	C	D	E	F	I	J	R
SP41.5-1.5	165	300	365	252.5	40	173	576	617	30
SP42.2-2	170	350	430	302.5	50	176	670	698	30
SP44-2.5	170	350	430	302.5	65	176	670	732	30
SP45.5-2.5	223	435	540	362.5	65	242	800	855	32.5
SP47.5-3	223	435	540	362.5	80	243	800	855	32.5
SP411-3	223	435	540	362.5	80	248	800	950	32.5
SP415-4	223	435	540	362.5	100	252	800	955	32.5
SP418.5-4	223	435	540	362.5	100	252	800	1120	32.5
SP422-4	223	435	540	362.5	100	252	800	1120	32.5
SP430-6	338	600	740	475	150	346	1108	1448	39
SP437-6	338	600	740	475	150	367.5	1108	1467.5	39
SP445-6	338	600	740	475	150	367.5	1108	1467.5	39
SP455-6	338	600	740	475	150	367.5	1108	1702.5	39

Basic Dimensions

Type	Max water depth (m.)	Shape and dimensions (m.)
Type	Max water depth (m.)	Round (Diameter)	Square	Rectangular
SP41.5-1.5	3	3.5	3.1 x 3.1	2.5 x 3.8
SP42.2-2	4	4.8	4.2 x 4.2	3.4 x 5.2
SP44-2.5	4	6.6	5..8 x 5.8	4.8 x 7.1
SP45.5-2.5	4	8	7.1 x 7.1	5.8 x 8.7
SP47.5-3	4.5	9.8	8.7 x 8.7	7.1 x 10.6
SP411-3	4.5	12.5	11.1 x 11.1	9.1 x 13.6
SP415-4	4.5	12.5	11.5 x 11.5	9.1 x 13.6
SP418.5-4	5	12.5	11.8 x 11.8	9.7 x 14.5
SP422-4	5.5	12.5	12.0 x12.0	9.7 x 14.5
SP430-6	6	16	14.5 x 14.5	12.5 x 17.0
SP437-6	6	16	15.0x 15.0	13.0 x 17.5
SP445-6	6	16	15.5 x 15.5	13.0 x 17.5
SP455-6	6	16	16 x 16	13.5 x 18.0
Note: To achieve higher efficient operation, oversize particles and long fibers should not in the aeration tank.