Vortex Sand Chambers

Description and application

Vortex grit chambers are made of polypropylene. Usually they are constructed with a by-pass conduit, sand washer and air-lift pump, including valves for regulation and supply of pressurised air and water. Moreover, it is possible to equip the device with racks or fine screens *** (steel, stainless steel, plastic), with pressure air and water and with a machine removing of sand, with a container and control electronics. The Vortex grit chamber is shown in Figure 1, and technical parameters, dimensions and a weight for design purposes are shown in tables below.

Vortex grit chambers are used for removal of suspended solids of mineral nature (sand with grains 0,2 mm, clinker, slug and ashes, mineral dust etc.). Water inside a Vortex grit chamber is forced to lateral circulation and due to centrifugal forces, separation of organic particles from those with higher density occurs. This results in a simple operation because it is not necessary to remove the sand or to face problems with a raw sludge.

Technical parameters

Vortex grit chambers are produced for a capacity ranging from 0,5 l/s to 150 l/s. Its smooth operation is dependent on a quality of hydraulic design. In case that you would need a professional assistance, we shall evaluate from the hydraulic point of view your project free of charge.

LP 03

Flow rate l/s	0,3	1	3
HP cm	0,4	4,4	4,7
HO cm *1	1,6	2,8	4,8
Hydraulic loss.	11,8 cm	14,6 cm *2/	13 cm
V1	25 cm
V2	38 cm
V3	28 cm
D	100 cm
D2	100 cm	Optional
Accumulation	1000 l	Can be selected according to shape and depth of storage
K	200 cm	Optional
P	15 cm
VO	230 cm	Optional
Mass	120 kg
Inflow flume		Recommended DN 150 with a bottom slope of 1 %
Outflow flume		Recommended DN 150 with a bottom slope of 1 %

LP 05

Flow rate l/s	0,5	3	5
HP cm	dáno přítokem	2	5
HO cm *1	2	4,7	6,2
Hydraulic loss.	11,4 cm	13 cm	17 cm
V1	30 cm
V2	43 cm
V3	33 cm
D	120 cm
D2	80 cm	Optional
Accumulation	1000 l	Can be selected according to shape and depth of storage
K	200 cm	Optional
P	15 cm
VO	230 cm	Optional
Inflow flume		Recommended DN 150 with a bottom slope of 1 %
Outflow flume		Recommended min. DN 150 with a bottom slope of 1 %
Mass	180 kg

LP 07

Flow rate l/s	0,7	4	7
HP cm	8	5 pozn1	2pozn1
HO cm *1	6,5	5	2
Hydraulic loss.	15 cm	13,5 cm	13,5 cm
V1	23,5 cm
V2	37 cm
V3	27 cm
D	120 cm	Outside diameter 140 cm
D2	80 cm	Optional
Accumulation	1000 l	Can be selected according to shape and depth of storage
K	140 cm	Possibility to be shortened up to 80 ? then the washer and a by-pass channel are not used
P	15 cm	Semi-circle pipe with a diameter of 15 cm
VO	230 cm	Can be selected ? minimum 180 cm for pump
Inflow flume		Recommended DN 200 with a botom slope of 1 %
Outflow flume		Recommended DN 200 with a botom slope of 1 %
Mass	220 kg

LP 15

Flow rate l/s	2		15
HP cm	2.5		16
HO cm *1	3		16
Hydraulic loss.	17 cm	cm	17 cm
V1	39 cm
V2	56 cm
V3	41 cm
D	145 cm
D2	75 cm	Optional
Accumulation	1000 l	Can be selected according to shape and depth of storage
K	160 cm	Optional
P	15 cm
VO	229 cm	Optional
Inflow flume		Recommended DN 250 with a botom slope of 1 %
Outflow flume		Recommended min. DN 250 with a botom slope of 1 %
Mass	240 kg

LP 30

Flow rate l/s	3	10	30
HP cm	3,9	10	14,8
HO cm *1	5	10	15
Hydraulic loss.	19 cm	19 cm	19,8 cm
V1	30 cm
V2	50 cm
V3	41 cm
D	190 cm
D2	75 cm	Optional
Accumulation	1000 l	Can be selected according to shape and depth of storage
K	200 cm	Optional
P	25 cm
VO	230 cm	Optional
Inflow flume		Trapezoidal channel with a bottom width 10 cm and a side slope 1:1
Outflow flume		Total width 40 cm in descent of 0,5 % or DN 300 with a botom slope of 1,2%
Mass	260 kg

LP 50

Flow rate l/s	5	25	50
HP cm	4,8	13	19,6
HO cm *1	4,8	10,8	16
Hydraulic loss.	22 cm	24,2 cm	25,8 cm
V1	46 cm
V2	68 cm
V3	48 cm
D	210 cm
D2	80 cm	Optional
Accumulation	1000 l	Can be selected according to shape and depth of storage
K	215 cm	Optional
P	30 cm
VO	230 cm	Optional
Inflow flume		Trapezoidal channel with a bottom width 10 cm and a side slope 1:1
Outflow flume		Total width 40 cm in descent of 0,5 % or DN 300 with a botom slope of 1,2%
Mass	280 kg

LP 70

Flow rate l/s	7	20	45	75
HP cm	4	12	18	35
HO cm *1	4,2	6,8	7,8	18
Hydraulic loss.	23,1 cm	24,5 cm	25,9 cm	26,8 cm
V1	50 cm
V2	63 cm
V3	43 cm
D	240 cm
D2	100 cm	Optional
Accumulation	1000 l	Can be selected according to shape and depth of storage
K	230 cm	Optional
P	30 cm
VO	230 cm	Optional
Inflow flume		Trapezoidal channel with a bottom width 10 cm and a side slope 1:1
Outflow flume		Total width 40 cm in descent of 0,5 % or DN 300 with a bottom slope of 1,2%
Mass	320 kg

LP 150

Flow rate l/s	20	50	150
HP	8 cm		39 cm
HO	4 cm		19 cm
Hydraulic loss.	31 cm		47 cm
V1	60 cm
V2	87 cm
V3	62 cm
D	330 cm
D2	100 cm	Optional
Accumulation	1000 l	Can be selected according to shape and depth of storage
K	290 cm	Optional
P	60 cm
VO	230 cm	Optional
Inflow flume		Concrete piping DN 600 with a bottom slope of 1 %
Outflow flume		Concrete piping DN 600 with a bottom slope of 1 %
Mass	440 kg

Design of out-flow and in-flow channels can be changed individually. The external dimensions of a circular part of the Vortex grit chamber and height codes according to the table below are compulsory. Around the circular part braces with a width of 10 cm are welded in such a way, that the actual outside dimension reaches maximum D plus 20 cm. The Vortex grit chamber with the braces is embedded into concrete with minimum thickness of 30 cm.