Septic tanks are reliable devices for primary wastewater treatment passive, stable, simple, and cost-effective purification systems.
They are used for the primary treatment of blackwater from WC drains serving domestic or equivalent discharges.
The tank’s design forces the effluent to pass slowly through the liquid mass, allowing settling of heavier solids and separation of lighter materials (oils, greases, etc.). At the same time, an anaerobic fermentation process begins, leading to breakdown and transformation of suspended solids into dissolved and colloidal substances. The effluent thus exits with a low concentration of solids. Although septic tanks are typically used only for replacement in existing systems, some local authorities still permit their installation.
Biological septic tanks
The biological septic tank is a prefabricated device for the primary treatment of domestic wastewater from residential buildings, apartment complexes, and community facilities.
Complying with UNI EN 12566-1 and Italian Legislative Decree 152/2006, it is CE-marked (excluding modular models) and designed for simple, stable civil wastewater solutions.
Constructed from one-piece LLDPE (polyethylene) with PVC fittings, a T-shaped deflector, and a submerged outlet pipe, it ensures efficient sedimentation and anaerobic sludge digestion through reduced flow velocity. Suitable for residential, community, school, camping, and hospitality applications.
Main specifications and fields of application
Operation
- CALM AREA: Zone where the incoming wastewater slows down, allowing sedimentation of sludge and separation of lighter substances.
- SLUDGE: Separated sludge settles at the bottom of the tank and undergoes anaerobic digestion by bacterial flora.
Applications
- Residential homes
- Apartment buildings
- Communities and schools
- Campsites and hospitality facilities
Technical advantages
- Single-compartment system: sedimentation + anaerobic digestion
- Durable buried polyethylene (PE) tank
- T-shaped deflector and submerged outlet pipe
- Biogas vent and inspection covers
- Easy maintenance and desludging
Installation diagram
Features of the biological septic tanks
Types
Single-chamber, Two-chamber, Three-chamber
Use
Primary treatment of blackwater from toilets.
Product certification
- UNI EN 12566-1
piccoli sistemi di trattamento delle acque reflue fino a 50 PT. Parte 1: Fosse settiche prefabbricate.
Norme di riferimento
Specification item
One-piece septic tank for primary treatment of domestic effluent or similar, in one-piece polyethylene (PE), manufactured by an ISO 9001/2008 certified company, certified under UNI EN 12566-1 and compliant with Legislative Decree No. 152 of 2006 and C.I.A. Resolution dated 04/02/1977, for underground installation, equipped with: PVC inlet pipe with watertight gasket and 90° bend to slow down and distribute the flow, and with a PVC outlet pipe with watertight gasket, with deflector T and submerged pipe, biogas vent and inspection, optional maintenance and flushing manhole covers; optional extensions can be installed on the inspection holes; Septic tank mod. …………………… useful volume ……………… l, dimensions …………….x……………x…………cm
Technical drawing
Technical table
By clicking on the item code, you can access the page with any technical attachments: Technical drawing (PDF) and/or Technical drawing (DWG).
| Item | Model | Length mm | Width mm | Ø mm | Height mm | Inlet height mm | Outlet height mm | Ø I/O mm | Cover 1 | Cover 2 | Extension 1 | Useful Volume lt | PE |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| XSE400 | Exagon | / | / | 790 | 800 | 635 | 615 | 110 | CC400 | CC130C | PP45 | 271 | 2 |
| XSE500 | Exagon | / | / | 950 | 900 | 720 | 700 | 110 | CC400 | CC130C | PP45 | 463 | 3 |
| XSE700 | Exagon | / | / | 1150 | 923 | 630 | 610 | 110 | CC400 | CC200 | PP45,PP30 | 566 | 4 |
| XSE900 | Exagon | / | / | 1150 | 1048 | 750 | 730 | 110 | CC400 | CC200 | PP45,PP30 | 700 | 5 |
| XSE1000 | Exagon | / | / | 1150 | 1221 | 933 | 913 | 110 | CC400 | CC200 | PP45,PP30 | 888 | 7 |
| NSE1200 | Elipse | 1900 | 708 | / | 1630 | 1250 | 1230 | 110 | CC300 | CC300 | PP35,PP35 | 1200 | 9 |
| XSE1250 | Exagon | / | / | 1150 | 1478 | 1175 | 1155 | 110 | CC400 | CC200 | PP45,PP30 | 1090 | 9 |
| XSE1500 | Exagon | / | / | 1150 | 1779 | 1465 | 1445 | 110 | CC400 | CC200 | PP45,PP30 | 1384 | 11 |
| XSE1750 | Exagon | / | / | 1350 | 1672 | 1285 | 1265 | 110 | CC400 | CC300 | PP45,PP35 | 1645 | 12 |
| NSE1700 | Elipse | 1900 | 708 | / | 2140 | 1760 | 1740 | 110 | CC300 | CC300 | PP35,PP35 | 1775 | 13 |
| NSE2100 | Corrugato | / | / | 1350 | 1975 | 1540 | 1520 | 110 | CC400 | CC300 | PP45,PP35 | 1950 | 15 |
| XCSE2000 | Exagon | 2350 | / | 1220 | 1220 | 1025 | 1023 | 110 | CC400 | CC400 | PP45,PP45 | 2060 | 16 |
| NSE2600 | Corrugato | / | / | 1710 | 1450 | 1000 | 980 | 125 | CC400 | CC300 | PP45,PP35 | 2061 | 16 |
| NSE3200 | Corrugato | / | / | 1710 | 1725 | 1240 | 1220 | 125 | CC400 | CC300 | PP45,PP35 | 2525 | 20 |
| NSE3800 | Corrugato | / | / | 1710 | 1955 | 1525 | 1505 | 125 | CC400 | CC300 | PP45,PP35 | 3175 | 24 |
| XCSE3000 | Exagon | 2450 | / | 1400 | 1450 | 1210 | 1190 | 110 | CC400 | CC400 | PP45,PP45 | 3000 | 28 |
| NSE4600 | Corrugato | / | / | 1710 | 2225 | 1745 | 1725 | 125 | CC400 | CC300 | PP45,PP35 | 3835 | 30 |
| NSE5400 | Corrugato | / | / | 1950 | 2250 | 1700 | 1680 | 125 | CC400 | CC400 | PP45,PP45 | 4578 | 36 |
| NSE6400 | Corrugato | / | / | 1950 | 2530 | 2000 | 1980 | 125 | CC400 | CC400 | PP45,PP45 | 5293 | 42 |
| NSE7000 | Corrugato | / | / | 2250 | 2367 | 1850 | 1830 | 160 | CC400 | CC400 | PP45,PP45 | 6934 | 55 |
| NSE9000 | Corrugato | / | / | 2250 | 2625 | 2070 | 2050 | 160 | CC400 | CC400 | PP45,PP45 | 7823 | 70 |
| ITSE11000 | Modulare | 4420 | / | 2100 | 2200 | 1870 | 1850 | 160 | TAP800 | / | PP77/PPTS720 | 10135 | 100 |
| NSE10700 | Cisterna | 2780 | 2430 | / | 2625 | 2270 | 2230 | 160 | TAP800 | / | PP77 | 10100 | 100 |
| ITSE13000 | Modulare | 5010 | / | 2100 | 2200 | 1870 | 1850 | 160 | TAP800 | / | PP77/PPTS720 | 12105 | 120 |
| ITSE15000 | Modulare | 5620 | / | 2100 | 2200 | 1870 | 1850 | 160 | TAP800 | / | PP77/PPTS720 | 14150 | 140 |
| ITSE18000 | Modulare | 6680 | / | 2100 | 2200 | 1870 | 1850 | 160 | TAP800 | / | PP77/PPTS720 | 16900 | 165 |
| ITSE20000 | Modulare | 7270 | / | 2100 | 2200 | 1850 | 1830 | 200 | TAP800 | / | PP77/PPTS720 | 18610 | 185 |
| ITSE22000 | Modulare | 7880 | / | 2100 | 2200 | 1850 | 1830 | 200 | TAP800 | / | PP77/PPTS720 | 20700 | 200 |
| ITSE25000 | Modulare | 8940 | / | 2100 | 2200 | 1850 | 1830 | 200 | TAP800 | / | PP77/PPTS720 | 22800 | 225 |
| ITSE28000 | Modulare | 9530 | / | 2100 | 2200 | 1850 | 1830 | 200 | TAP800 | / | PP77/PPTS720 | 25200 | 250 |
| ITSE30000 | Modulare | 10140 | / | 2100 | 2200 | 1820 | 1800 | 250 | TAP800 | / | PP77/PPTS720 | 27250 | 270 |
| ITSE33000 | Modulare | 11200 | / | 2100 | 2200 | 1820 | 1800 | 250 | TAP800 | / | PP77/PPTS720 | 29540 | 290 |
| ITSE35000 | Modulare | 11790 | / | 2100 | 2200 | 1820 | 1800 | 250 | TAP800 | / | PP77/PPTS720 | 31710 | 310 |
| ITSE36000 | Modulare | 12400 | / | 2100 | 2200 | 1820 | 1800 | 250 | TAP800 | / | PP77/PPTS720 | 33800 | 330 |
| ITSE40000 | Modulare | 13460 | / | 2100 | 2200 | 1820 | 1800 | 250 | TAP800 | / | PP77/PPTS720 | 36180 | 360 |
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