Biological treatment plant
maintenance and service

Maintaining a biological treatment plant is critical to keeping the system sustainable, preventing unpleasant odours and avoiding costly repairs in the future.

ATK series treatment plant

Why is maintenance
needed?

01

System longevity

Regular cleaning prevents costly repairs, compressor damage and clogging of the whole system.

02

Legal compliance

Cabinet Regulation No. 384 requires maintenance at least once a year by a certified company.

03

Clean environment and comfort

Timely sludge control and plant adjustment prevent unpleasant odours and ensure high treatment standards.

04

Cost efficiency

Checking the sludge concentration and the plant in good time helps avoid excessive power consumption and unexpected emergency costs.

What does the technician do
during maintenance?

Maintenance of a biological wastewater treatment plant is mandatory once a year. During maintenance the service technician checks the technical condition of the plant, pumps out excess sludge, rinses and cleans the treatment plant, refills it with water and adjusts it for further operation.

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Service maintenance contract

A service maintenance contract for biological sewerage systems includes visits by our technicians twice a year, plus free emergency call-outs, to which we respond within 48 hours.

If needed, we can also visit more often than every six months, which is also covered by the service contract. Maintenance visits are scheduled in advance on a day and time that suits you.

AT series plant

Frequently asked questions

How much does maintenance of a biological wastewater treatment plant cost?
Maintenance of a biological wastewater treatment plant usually costs from 180 EUR. The exact price may vary depending on the plant model, its load, technical condition and the scope of maintenance work.nnStandard maintenance usually includes a technical inspection of the plant, a check of the aeration system and compressor, an assessment of the activated sludge, and a check of the plant's treatment efficiency. If additional problems are found or extra work is needed, the cost may change.nnRegular maintenance of a biological wastewater treatment plant is an investment in its longevity and stable operation, and helps avoid costly repairs in the future.
Do I need to call a sewage tanker before maintenance?
A biological wastewater treatment plant usually does not need emptying by a tanker. Under normal operating conditions, the activated sludge in the plant treats the wastewater itself and is not pumped out regularly.nnEmptying is only needed in exceptional cases, when the sludge in the plant has lost its ability to treat wastewater and has died. This can happen if the compressor has not worked for a long time, or if industrial chemicals, toxic or other hazardous substances have entered the plant and disrupted the biological processes.nnIn such situations, to restore operation, the plant is fully pumped out with the help of a tanker service and filled with new, viable activated sludge. This restores the biological treatment process and ensures the plant works efficiently.
Why should a wastewater treatment plant be maintained and what do I gain from it?
Maintenance prevents the build-up of excess material, such as insoluble substances, sediment and too much activated sludge, which can impair the plant's operation.nnIf maintenance is not carried out regularly, the plant may become inefficient, unpleasant odours may appear and the risk of technical faults increases. Regular, professional maintenance of a wastewater treatment plant helps spot potential problems early and fix them before they have serious consequences.nnFor the owner, the benefit is stable and safe operation, a lower risk of damage, a longer service life and the confidence that wastewater is treated in line with environmental requirements. Regular maintenance gives peace of mind and protects against unplanned costs in the future.
If I have an AUGUST biological wastewater treatment plant, can I use household chemicals?
Yes, you can use household chemicals with an AUGUST biological wastewater treatment plant, but in reasonable amounts and under certain conditions.nnAUGUST wastewater treatment plants work using biological processes in which active bacteria play the main role. Ordinary household chemicals such as dishwashing liquid, laundry detergent and cleaning products intended for everyday household use generally do not affect the plant's operation.nnHowever, it is not recommended to pour concentrated, aggressive or chlorine-based cleaners into the sewer in large quantities, nor industrial chemicals, solvents, oils or other toxic substances. Such substances can harm the bacteria and reduce the efficiency of biological wastewater treatment.nnTo keep your AUGUST biological wastewater treatment plant working reliably, choose eco-friendly household products, follow the manufacturer's instructions and avoid excessive use of chemicals.
What should I do if the sewer is "foaming"?
If a biological wastewater treatment plant is foaming, it usually indicates an imbalance in the biological process or inappropriate use of household chemicals.nnFoaming is most often caused by too much detergent, soap or other household chemicals, especially concentrated or chlorine-based cleaners. Foaming can also occur after the plant has not been used for a long period or after a sudden increase in load.nnIf foaming appears, temporarily reduce your use of household chemicals and avoid aggressive cleaners. Use eco-friendly detergents and do not exceed the recommended dose. Foaming usually subsides on its own once the biological process stabilises.nnIf foaming persists or becomes intense, check that the plant is working properly, especially the aeration system and compressor. In that case, contact a wastewater treatment plant maintenance specialist, who will assess the situation and carry out maintenance if needed.nnActing promptly helps prevent unpleasant odours, reduces the load on the plant and keeps the wastewater treatment plant working reliably.
My wastewater treatment plant has started to smell – is that normal?
If the plant smells, it is not working as it should. A sewer will never smell pleasant, of course, but a strong unpleasant odour suggests that the sludge in the plant may have started to die off, so we recommend contacting us right away to resolve the problem: +371 29997166
Can I maintain a biological wastewater treatment plant myself?
You can carry out some of the monitoring of a biological wastewater treatment plant yourself, but full maintenance is best left to certified specialists.nnIn day-to-day use, you can visually check that the system is working without problems and that there are no unpleasant odours, follow the manufacturer's instructions for correct operation and avoid putting unsuitable substances down the drain.nnProfessional maintenance of a biological wastewater treatment plant, on the other hand, involves technical work that requires knowledge and equipment: pumping out sludge, checking the aeration system and compressor, assessing the bacterial activity and checking the plant's treatment efficiency.nnRegular maintenance ensures stable operation, extends the plant's service life and helps avoid costly repairs. To meet environmental requirements and ensure effective wastewater treatment, maintenance should be carried out at least once or twice a year.
How often should I check the plant, compressor and pump myself?
Check the plant's operation (for odours or excessive sludge build-up) about once a month, and the compressor about twice a month. Check and empty the screening basket for mechanical impurities as needed, so that it does not clog. If treated water is discharged to an infiltration field or a pumping station is installed on site, these should also be checked periodically: with correct use of the plant, there should be no sediment or other pollutants in the infiltration field, and the pump float should be above the water level.