RotoClean biological home sewage treatment plant

PRODUCT COMPLIES WITH THE STANDARD PN-EN 12566-3+A2:2013-10

Dimensions

    • Height: 190 cm
    • Width: 145 cm
    • Length: 280 cm
    • Inlet 100 cm from bottom
    • Outlet 87 cm from bottom
    • Standard superstructure 25 cm
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Diagram

  1. Primary settling tank
  2. Rotating biological bed
  3. Secondary settling tank
  4. Gearmotor
  5. Drive belt
  6. Cover
  7. Raw sewage inlet DN160
  8. Treated sewage outlet DN110
  9. 3-inch cone connection for emptying from primary settling tank
  10. 2-inch cone connection for emptying from secondary settling tank
  11. Partition

DESTINY

The RotoClean domestic biological wastewater treatment plant is an innovative treatment plant using rotating biological bed technology. Ideal for installation in locations without access to sanitary sewerage. The unique design and shallow inlet positioning allows installation in any soil and water conditions. The RotoClean unit consists of a horizontal, reinforced tank divided into a primary settling tank, biological section, and a separate secondary settling tank chamber. The treatment plant is resistant to power supply interruptions, temperature fluctuations, and temporary lack of sewage inflow. A slow-speed gearmotor with dosing control is responsible for providing rotational movement to the biological bed.

Domestic wastewater treatment plants

OPERATION DESCRIPTION OF THE RotoClean DOMESTIC SEWAGE TREATMENT PLANT

The operation of the treatment plant is based on the work of the primary settling tank, rotating biological bed, and secondary settling tank. On the rotating bed, due to rotational movement and continuous immersion and emergence, a biological film (biofilm) is formed, which enables the reduction of pollutants contained in the wastewater. Wastewater flowing through the bed is treated and then flows to the secondary settling tank. There, final clarification of the wastewater occurs. Treated wastewater, free of biological film residues, flows out of the treatment plant.

Domestic wastewater treatment plants
PHASE I
Raw sewage entering the primary settling tank is subjected to mechanical pre-treatment.
PHASE II
Light wastewater components, such as fats, form a scum on the surface of the settling tank. Sedimentation of easily settling suspensions and non-decomposable elements also occurs, forming a sludge layer at the bottom of the tank.
PHASE III

Mechanically treated sewage is dosed through a special cup-portioning system into the biological chamber.
PHASE IV

A constantly rotating biofilm immerses and emerges from the wastewater. This allows the bacteria, concentrated in a biofilm, to absorb oxygen from the atmosphere and nutrients from the wastewater.
PHASE V

The treated wastewater then flows into the secondary settling tank. In the secondary settling tank, the biofilm fragments and suspended solids that have become detached from the biofilm are retained and either sink to the bottom or float to the surface.
PHASE VI
The treated sewage flows out of the treatment plant through a siphonic outlet.
WASTEWATER TREATMENT EQUIPMENT
The treatment plant includes:
• Three-chamber treatment tank – 1 pc.
• Cover – 1 pc.
• Geared motor with drive system – 1 pc.
Domestic wastewater treatment plants
Domestic wastewater treatment plants
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Furthermore, the distance of the settling tank that comprises the domestic wastewater treatment plant (for single-family, farm, individual recreation buildings) from the property boundary and public road should be at least 2 m. From windows and external doors to rooms intended for permanent human occupancy, the distance should be no less than 5 m  
(in direct vicinity of single-family buildings). The distance for locating infiltration trenches and drainage fields should be 30 m from wells, 2 m from neighboring property boundaries, roads (streets) or pedestrian paths. A domestic treatment plant can be built in direct vicinity of single-family buildings, provided its ventilation is routed through the sewerage system at least 0.6 m above the upper edge of windows and external doors in these buildings.

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An important criterion determining the location of a domestic wastewater treatment plant is the distance from water intakes. The treatment plant tank should not be installed closer than 15 m from the nearest well. The distance of infiltration drainage from water intakes should be at least 30 m, and the groundwater level must be at a depth of 1.5 m below the treated water discharge system. Maintaining such distances is conditioned by the possibility of pathogenic microorganisms penetrating water intakes. Importantly, the above distances apply to all water wells intended for human consumption – both on the property where the domestic wastewater treatment plant is to be located and on neighboring properties.

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An important condition for using infiltration drainage is having soil with appropriate permeability and groundwater occurrence at least 1.5 m below the planned position of the wastewater infiltration drainage. Otherwise, it may be necessary to install a sewage pumping station and construct drainage in the form of an embankment.

Note! The treatment plant should be located in non-vehicular terrain with access for sewage trucks.

Domestic wastewater treatment plants

INSTALLATION OF THE HDPE SETTLER

General rules
Before starting the installation, check that the tank has not been damaged during transport. Any defects noticed should be reported to the manufacturer/retailer.
To maintain the good condition of the appliance and its operation, follow this instruction manual and its attachments. Incorrect installation may affect the improper operation of the treatment plant. The excavation and installation of the treatment plant should be carried out by a specialized contractor.
Never enter an unventilated tank – LIFE HAZARD!
Make sure that the ground around the treatment plant does not have factors that may have a negative impact during and after installation (guarantee a stable position, keep a safe distance from buildings).
Do not work in heavy rainfall (risk of trench collapse).
Soil subsidence must be taken into account in all assembly work.
After installing the tank and after each service inspection, check that the inspection hatches are closed and properly protected against opening.
We make a trench for a clarifier with dimensions in a floor plan 0.5 – 1.0 m larger than the dimensions of the settling tank. The minimum width of the backfill is 50 cm on each side of the tank.
We make sand ballast with a thickness of min. 30 cm and thicken to at least 85% (according to the Proctor scale).
We lower the tank into the trench, level and make the first layer of 30 cm of sand backfill in order to stabilize it and compact it to min. 85% according to the Proctor scale.
Check the position of the aeration diffusers. They should lie flat on the bottom of the tank.
After leveling and stabilizing the tank, we make backfilling in layers every 30 cm with its simultaneous compaction to the level of the drain spigot according to the proportions and degree of compaction as above. In each layer of filling, the clarifier should be filled with water to the level of backfilling. Particular attention must be paid to the thorough filling of all the cavities of the tank with material and the strong compaction of the layers, so that there are no voids in the backfill, which will guarantee the stability of the tank.
After making the backfill and compacting it, connect the inlet and drain ports, connecting it simultaneously with the distribution manhole.
We install the DN 650 extension, adjusting the height to the expected level of the ground (terrain) and finish the backfill with compaction. When installing the extension, it is imperative to seal the connection point with a special tank designed for this purpose with glue (e.g. Wurth glue + sealant) or another suitable sealant and then screw it with screws (e.g. Farmer type). The tank cover should not exceed 120 cm.
After the installation of the clarifier is completed, a leak test must be carried out.
After completing the above-mentioned works, we proceed to the installation of the drainage.
10. After the excavation is made, depending on the type of soil, we make a protective layer with simultaneous installation of drainage pipes and, if necessary, a supporting layer and covering it with geotextile.
After installing the device and putting it into operation, it is very important to check the correct arrangement of the diffusers located in the biological treatment zone. The biological reactor hatch must be opened and, if necessary, the diffuser should be lifted and laid flat on the bottom, which will ensure that the wastewater is aerated evenly.
Compliance with the manufacturer's guidelines will ensure the stability and functionality of the treatment plant tank and its proper behavior in the trench. Slight deformations of the tank result from the properties of the material used and do not affect the proper operation of the treatment plant. A deformation of the tank of not more than 5% is allowed.
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Domestic wastewater treatment plants

INSTALLATION VENTILATION

Diagram of ventilation and additional venting of the treatment plant. Illustrative drawing.

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Domestic wastewater treatment plants
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