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Filter pit unit

Compact units

Treatment > Filter pit unit
Description

The biological filter pit septic tank (decanter/digester) system is suitable for domestic-type waste-water.
The system meets current Spanish regulations on dumping "Reglamento del Dominio público Hidráulico" [Regulation of the public water domain], Royal Decree 849/1986.

The filter pit units are sized for an intake of 200 l/p.e. and day with a 24-hour retention time. Performance figures for this treatment system are as follows:
- BOD5 REDUCTION 80%
- SS REDUCTION 90%
Filter pit unit
Esquema Filter pit unit
MATERIAL
-Fibreglass-reinforced polyester.
-Polypropylene manholes.

CHARACTERISTICS
-High chemical and mechanical resistance.
-High corrosion-resistance.
-High weather-resistance.

MAINTENANCE
-Remove 3/4 of the accumulated sludge once a year.

OPERATION
-DECANTER: Performs primary sedimentation.
-DIGESTOR: Clarifier.
-BIOFILTER: biological breakdown of organic matter.
Modelos Filter pit unit
Available models

Popul.
Vol. (L)
Ø (mm.)
L (mm.)
H (mm.)
Pipe (mm.)
4
1.500
1.100
1.600
1.200
110
7
2.000
1.100
2.150
1.200
110
12
3.500
1.100
3.700
1.200
110
15
4.000
1.500
2.750
1.600
125
20
6.000
1.725
3.000
1.825
125
30
9.000
2.000
3.280
2.100
125
40
12.000
2.000
4.300
2.100
125
50
15.000
2.500
3.560
2.100
160
60
18.000
2.500
4.170
2.100
160
75
22.500
2.500
5.100
2.600
200
100
31.500
2.500
6.900
2.600
200
125
37.500
2.500
8.150
2.600
200
150
45.000
2.500
9.670
2.600
200
175
52.500
2.500
11.200
2.600
200
200
60.000
2.500
12.730
2.600
200
Consult us for other volumes
Operating Details

The waste water entering the treatment plant passes first through the septic tank (decanter/digester) which performs the primary sedimentation and digests the sludge, where the anaerobic bacteria degrade the organic matter, breaking down the solids. The clear water passes through the biofilter by way of pipes that distribute the clear water onto the filtering material, where the aerobic bacteria keep purifying the water of the organic remains and leave it in optimum conditions for discharging.