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.