8 April 2025

Extraordinary maintenance of wastewater treatment plants: when to call the professionals

A purification plant is a complex machine, designed to ensure effective treatment of wastewater. However, even with rigorous ordinary maintenance, problems may arise over time that require specialized technical intervention. There may be many causes: natural wear of the components, accumulation of sludge beyond the optimal level, anomalies in the treatment processes or even mechanical or electrical failures.

Timely extraordinary maintenance can make the difference between a simple corrective intervention and costly repairs due to serious damage. Furthermore, neglecting a purification plant can lead to environmental and legal consequences, with penalties for failure to comply with regulations. For this reason, it is essential to recognize the warning signs and act proactively.

Warning signs: when to intervene on the system with extraordinary maintenance

Many failures in purification plants do not occur suddenly, but are preceded by small signs that, if recognized in time, allow you to avoid more serious problems.

1.Slow or clogged drains

• If the water is taking longer than usual to drain, there may be a buildup of sludge, debris or scale in the pipes or filters.
• A sudden blockage may also be the result of a problem with the lift pumps.

2. Persistent and unpleasant odors

• A well-functioning system should not release any unpleasant odors. If there is a strong putrefying odor, there may be an excessive buildup of sludge or a problem with the biological treatment processes.
• Sulfurous odors may be a sign of oxygen deficiency in the oxidation tanks.

3. Increased sludge levels

• Regular monitoring of the sludge level is essential. If the level exceeds the recommended limit, the system may lose efficiency and release inadequately treated water.
• Excess sludge can also cause blockages and failure of mechanical components.

4. Abnormal noises or interruptions in operation

• A well-maintained sewage treatment plant operates smoothly and quietly. Metallic noises, intense vibrations or intermittent operations can indicate problems with pumps, valves or electrical components.
• In some cases, it could be a faulty compressor or a malfunctioning ventilation system.

If one or more of these signs appear, it is essential to contact a specialized technician for an in-depth diagnosis and timely intervention.

The phases of extraordinary maintenance

Once the need for technical intervention has been identified, the professional will follow a very specific protocol to ensure that the system returns to optimal functioning. The main phases of extraordinary maintenance include:

1.Sludge Analysis

• The technician takes sludge samples to analyze their composition and determine their density.
• If the sludge level is excessive, a purging operation is performed to avoid blockages and improve the effectiveness of the treatment.

2. Cleaning of Tanks and Components

• The tanks are emptied and cleaned to remove any accumulations of debris and scale.
• During this operation, the internal walls are examined for cracks or structural damage.

The filters and pre-treatments are inspected and cleaned to restore their efficiency.

3. Inspection of Electrical and Mechanical Components

• The pumps, valves and aeration systems are tested to verify their functionality.
• Any defective components are replaced with original spare parts.

For extraordinary maintenance (and if necessary also ordinary) of your wastewater purification systems, rely on Di Camillo professionals. In addition to a wide range of products including purification components and systems, fuel and water tanks and cisterns, we offer a rapid and professional technical assistance service, and technical consultancy also on site, for the maintenance and repairs of underground tanks and cisterns.

Don’t wait for the problem to get worse! Contact us today for a personalized consultation and find out how to keep your system in optimal conditions.