Dual deep bed filter with manual valve

Sand and anthracite dual bed filtration with manual control

The Carbotecnia dual load filter is ideal for use in applications where the water contains a high concentration of suspended solids and when the filtration speed is high. 

Dual bed filters provide high filtration efficiency compared to sand filters. Because anthracite is a coarser medium than sand, larger gaps are formed between the grains, resulting in a higher capacity to hold suspended solids without saturating the top layer of the filter. While the sand bed under the anthracite, is responsible for retaining the smallest suspended particles that managed to pass the upper bed. The result of taking advantage of the full depth of the filter is a lower initial pressure drop and longer times between backwashes.

Advantage Applications
  • High efficiency in the retention of suspended solids at high filtration rates.
  • Filtration between 20 - 30 microns.
  • Dual filters have a higher solids holding capacity than conventional sand filters.
  • Longer filtration cycles between backwashes with minimal pressure drop.
  • Drinking water filtration.
  • Process water filtration.
  • Effluent filtration.
  • Pool filtration.
  • Retention and reduction of particles suspended in the water.
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The dual-charge deep bed manual filter

It is a simple equipment of a single tank with Carbotecnia dual load and manual control valve. Recommended for domestic or commercial use, and operation less than 23 hours.

This filter consists of a bed of anthracite number one with an effective size (TE) of 0.85 - 0.95 mm; Placed on a bed of 16 x 35 US Std. Mesh silica sand with 0.44 - 0.52mm TE, this filter uses 1/8 x 1/16 US Std. Mesh silica gravel as support medium.

The granular media used in the Carbotecnia dual bed are evaluated in accordance with the quality parameters specified by the AWWA in the B-100 standard.

Code
Tank size (in)
Bed Volume (ft3)
Normal service flow (lpm)
Normal Service Flow (gpm)
Maximum service flow (lpm)
Maximum service flow (gpm)
Backwash flow (lpm)
Backwash flow (gpm)
Manual valve
Input / Output Connections
Drainage Connections
P_611001
8 × 44
0.75
9
2.5
13.2
3.5
26.5
7
Purago F1
1"
1"
P_611002
9 × 48
1
12
3.1
16.7
4.4
34.07
9
Purago F1
1"
1"
P_611003
10 × 54
1.5
15
3.9
20.8
5.5
37.85
10
Purago F1
1"
1"
P_611004
12 × 52
2
21
5.5
29.9
7.9
56.78
15
Purago F1
1"
1"
P_611005
13 × 54
2.5
24
6.4
34.8
9.2
71.92
19
Purago F1
1"
1"
P_611006
14 × 65
3
28
7.5
40.5
10.7
83.27
22
Purago F2
2"
2"
P_611007
16 × 65
4
37
9.8
53
14
109.77
29
Purago F2
2"
2"
P_611008
18 × 65
5
47
12.4
67
17.7
140.05
37
Purago F2
2"
2"
P_611009
21 × 62
7
64
16.9
91.2
24.1
166.54
44
Purago F2
2"
2"

Components of a filter:

Fiberglass tankMade from a single piece of fiberglass coated for mechanical strength and a polyethylene inner jacket. It is maintenance free. Max pressure operating pressure 150 psi.
Head or control valve: It is the component in which the inlet, outlet and drain connections are made; It allows us to change between the different service or backwash positions, manually or to program it to do so automatically. Max pressure operating pressure 125 psi.
Granular filter medium: It is a bed made up of, anthracite number one with TE of 0.85 - 0.95 mm and silica sand 16 x 35 US Std. Mesh with TE of 0.44 - 0.52mm.
Lower distributor and distribution tube: The distributor is a micro-grooved element, which is placed in the lower part of the tank, this allows a correct distribution of the flow in the backwash position, and operates as a physical barrier that does not allow the leakage of the granular medium to the outlet line , in the service position. There are simple distributors, stack type or distributors with lateral tubes, spider type; their selection depends on the flow of service and backwash, as well as the diameter of the tank. Its construction material is HDPE or ABS. The central tube is a Ced PVC tube. 40 connecting the lower distributor with the head or control valve.
Support gravel: 1/8 x 1/16 US Std. Mesh silica gravel as support medium. By having a micro-grooved distributor, the need to place several gravel beds of different granulometry is eliminated to avoid the loss of material.

Operating conditions:

  • Input pH: 3-12
  • Bed Height (in): 30 - 40
  • Free height for bed expansion (%, min.): 50
  • Hydraulic Service Head (gpm / ft2): 7-10
  • Backwash Hydraulic Head (gpm / ft2): 20 - 22
  • Operating pressure: 30 - 100 psi
  • Backwash: by pressure differential> 10 psid or by time every 72 hours max.
  • Life time of granular medium: 3 to 5 years

 

 

Data sheet

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