Coconut shell activated carbon equipment with manual valve

Activated carbon filter with manual multivalves

Advantages Applications
  • Destruction of chlorine, ozone and other oxidants in drinking water.
  • Adequate granulometry to avoid pressure drops or clogging.
  • Armed with Micro K activated carbon with low fines content, which decreases start-up time.
  • Process water treatment.
  • Water purification.
  • Use for carafe fillers
  • Reverse osmosis pre-treatment.

Manual Coconut Shell Activated Carbon Filter

It is a simple single tank equipment loaded with Micro K Carbotecnia coconut shell charcoal, with manual control valve. Recommended for domestic or commercial use, and operation less than 23 h.

Micro K Carbotecnia coconut shell activated carbon equipment is ideal for dechlorination and reduction of low molecular weight compounds in the water purification process. Being of vegetable origin and thermally activated, Micro K has a low concentration of soluble matter compared to mineral coals.

Table for selecting manual activated carbon equipment:

Code
Tank size (in)
Bed volume(ft3)
Cross-sectional area (ft2)
Service flow to dechlorinate (lpm)
Service flow to dechlorinate (gpm)
Service flow for potabilization (lpm)
Service flow for drinking water treatment (gpm)
Backwash flow (lpm)
Backwash flow (gpm)
Manual valve (Purago)
Input/Output Connections
Connections Drainage
P_630001
8×44
0.75
0.35
8
2.2
6.4
1.7
21.2
5.6
F1
1″
1″
P_630002
9×48
1
0.44
10
2.7
8.3
2.2
26.87
7.1
F1
1″
1″
P_630003
10×54
1.5
0.55
16
4.2
12.1
3.2
32.93
8.7
F1
1″
1″
P_630004
12×52
2
0.79
20
5.3
15.9
4.2
47.69
12.6
F1
1″
1″
P_630005
13×54
2.5
0.92
28
7.5
24.6
6.5
55.64
14.7
F1
1″
1″
P_630006
14×65
3
1.07
34
9
28.4
7.5
64.72
17.1
F2
2″
2″
P_630007
16×65
4
1.4
42
11
34.1
9
84.41
22.3
F2
2″
2″
P_630008
18×65
5
1.77
57
15
49.2
13
107.12
28.3
F2
2″
2″
P_630009
21×62
6.5
2.41
76
20
64.3
17
145.72
38.5
F2
2″
2″

Components of a filter:

Fiberglass tank: Made of a single piece of polypropylene coated with fiberglass for mechanical resistance. It is maintenance free. Maximum operating pressure 150 psi.

Manual 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. Maximum operating pressure 125 psi.

Granular filter media:Micro K 12 x 40 coconut shell activated carbon with a minimum B.E.T. surface area of 600m2/g.

Lower distributor and distribution pipe: The distributor or diffuser is a micro-grooved element, which is placed at the bottom of the tank, it allows a correct flow distribution 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, stack type distributors or distributors with lateral tubes, spider type; their selection depends on the service and backwash flow, as well as the diameter of the tank. Its material of construction is HDPE or ABS. The central pipe is a PVC Ced pipe. 40 connecting the lower distributor to the control head or valve.

Backing gravel: 1/8 x 1/16 U.S. Std. silica backing gravel. Mesh. By having a micro-grooved distributor, the need to place several gravel beds of different grain size is eliminated.

Operating conditions:

  • Bed height (in): 24 – 36
  • Clearance height for bed expansion (%, min.): 50
  • Hydraulic service load to dechlorinate (gpm/ft2): 3 – 10
  • Hydraulic service load for water treatment (gpm/ft2): 1 – 6
  • Hydraulic backwash load (gpm/ft2): 14 – 16
  • Operating pressure: 30 – 100 psi
  • Backwash: by pressure differential >10 psid. or by time every 72 hours max.
  • Lifetime of granular media: 1 to 2 years
  • Prefiltration: 5 microns

By its nature, Micro K has micropores on its entire surface, capable of adsorbing with greater efficiency organic contaminants of low molecular weight, which cause tastes and odors in water, or which are harmful for its consumption, such as pesticides, disinfection by-products, hydrocarbons, etc. In addition, its high hardness compared to activated carbons of other raw materials makes it more resistant to erosion, which avoids material losses in the operation. This property makes it ideal for use as a pretreatment for softening, demineralizing or reverse osmosis equipment; in these processes, the presence of suspended solids, such as carbon particles, is undesirable.

Another main application of Micro K is the removal of free chlorine by chemical reaction, which is used as a disinfectant in water treatment. Free chlorine is found in water either as hypochlorous acid (HOCl) or as hypochlorite ion (OCl), which upon contact with carbon are reduced to chloride ion (Cl).

These equipments are designed and calculated with activated carbon with a size range of 12 x 40 U.S. Std. Mesh, being smaller than the 8 x 30 U.S. Std. size. Mesh diffusion rate increases, therefore the rate of dechlorination and adsorption of organic contaminants becomes faster. This means that with a smaller bed volume we can achieve the same performance of a larger bed volume of a coal with a larger particle size.

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