Polyethylene domestic wastewater treatment plant ROOXY

for small communitycompact

Overview
The RoOxy small-scale sewage treatment plant is a compact, plug-and-play SBR system for biological treatment of domestic and small commercial wastewater. It features a single-tank, two-chamber design in wastewater-resistant PE and is optimized for installations with limited space (standard units for 4–8 PE; multi-tank solutions up to 50 PE).

Key features

• Sewage-resistant polyethylene (PE) tank
• Pre-assembled outdoor pedestal with control unit, air distributor and compressor (plug-and-play)
• SBR (Sequencing Batch Reactor) technology in a single-tank, two-chamber configuration
• Wi‑Fi browser control and remote monitoring via router (no GSM module required)
• Groundwater-stable installation up to 1.12 m above tank base
• Trafficability: passable by passenger cars up to 3.5 t
• Slim rectangular footprint for tight installation spaces
• Drainage class C standard; class D optional
• No electrically driven or rotating components in the wastewater (reduced wear)
• Low odor formation due to absence of putrefaction processes
• Expandable: standard single-tank units 4–8 PE; multi-tank systems up to 50 PE
• Two telescopic DN 600 access shafts for maintenance

Scope of delivery

• Pre-assembled RoOxy SBR unit (single-tank, two-chamber)
• PE outdoor column (plug-and-play) with control unit, air distributor with solenoid valves for sludge recirculation, and compressor
• Air supply hoses not supplied (requires four DN 13 hoses)

Variants (technical table)

• 7200070500 | RoOxy 4 EW | 4000 L | 2450 mm × 1350 mm | Height: 1750–2050 mm | Weight: 300 kg | Installation range: 1750–2050 mm
• 7200070510 | RoOxy 6 EW | 5200 L | 2450 mm × 1350 mm | Height: 2000–2300 mm | Weight: 330 kg | Installation range: 2000–2300 mm
• 7200070520 | RoOxy 8 EW | 6000 L | 2450 mm × 1350 mm | Height: 2520–2720 mm | Weight: 365 kg | Installation range: 2520–2720 mm

SBR process
The RoOxy uses an automated SBR cycle: reactor filling, aeration (biological treatment), sedimentation, and clear-water discharge. The tank includes two functional sections:

• Sludge storage
• SBR reactor

The treated effluent can be discharged according to local regulations.

Compatible system technologies & control

• Control via 3-button interface or browser over Wi‑Fi
• Remote data transmission through a router; no GSM module required
• Compatible with electric pumps & float switches, air-lift pumps, submersible aerators, fluidized-bed and fixed-bed systems, and trickling filters

Display & controls

• Graphic LCD 128 × 64 pixels (2.4″), backlit
• 3 LEDs (Error: red; Operation: yellow; Eco: green)
• 3-button operation
• USB port for data transfer

Sensors & signal inputs

• 2 digital inputs (terminals)
• 1 analog 4–20 mA input (external power)
• Pressure sensor for water-level and blower monitoring (0–500 mbar)
• 230 V mains cable (1 m) with CEE 7/7 plug supplied

Switching outputs & relays

• 5 relays (230 V)
• 1 × 16 A nominal relay with CEE 7/3 socket (left housing side)
• 2 relay outputs (16 A nominal) via terminals; 2 relay outputs (5 A rated) via terminals
• Maximum of 4 relays switchable simultaneously
• 1 output for alarm lamp (5 V DC, 20 mA max.)

Security & system functions

• Shared current monitoring for all outputs (max. 3 A)
• 6.3 A fuse common to all outputs
• Replaceable NiMH batteries for power-failure alarm (2 × AA)
• Buzzer for acoustic alarms, RTC (battery-backed), integrated Wi‑Fi module

Installation
The compact geometry reduces excavation and backfill requirements. External pedestal groups central components for easy service. Two telescopic DN 600 walk-in shafts enable maintenance access.

Advantages & sustainability

• Compact single-tank, two-chamber SBR for 4–8 PE (expandable via multi-tank up to 50 PE)
• Fast commissioning due to pre-assembly
• PE construction reduces long-term maintenance
• No rotating components in wastewater — lower wear and reduced odor

Technical specifications

• Model / series: RoOxy
• Brand: Roto Eco
• Material: Wastewater-resistant polyethylene (PE) tank and PE outdoor column
• Standard population equivalent: 4–8 PE (single-tank units); expandable up to 50 PE
• Groundwater installation capability: stable up to 1.12 m above tank base
• Trafficability: suitable for passenger cars up to 3.5 t
• Drainage class: C (standard); D (optional)
• Access: two telescopic DN 600 walk-in shafts
• Control: Graphic LCD 128×64 (2.4″), 3-button operation, Wi‑Fi browser control and remote monitoring
• Inputs/outputs: 2 digital inputs, 1 analog 4–20 mA, USB, pressure sensor 0–500 mbar
• Relays: 5 relays (230 V); 1×16 A socket; additional terminal relays (16 A / 5 A)
• Power: 230 V mains cable (1 m) with CEE 7/7 plug supplied
• Air supply: air distributor and compressor included; air supply hoses (four DN 13) required but not supplied
• Typical volumes: RoOxy 4 EW = 4000 L; RoOxy 6 EW = 5200 L; RoOxy 8 EW = 6000 L
• Typical footprint: length 2450 mm; width 1350 mm; heights vary by model (see variants)