Water and Effluents in IMS: Monitoring That Doesn't Rely Solely on Reports

Monitoring water and effluents in an Integrated Management System (IMS) is essential for ensuring environmental compliance and the sustainability of industrial operations. In Brazil, guidelines for effluent control are established by standards such as CONAMA Resolution 430/2011, which sets conditions and standards for effluent discharge. However, the success of monitoring does not rely solely on obtaining technical reports, but on a well-structured sampling plan, identification of deviations, and implementation of effective corrective actions.

Sampling Plan: The First Step

An adequate sampling plan is crucial to ensure that the data collected is representative and reliable. This plan should clearly define the collection points, sampling frequency, and parameters to be analyzed. In the state of São Paulo, for example, CETESB advises companies to follow specific guidelines for effluent collection and analysis, ensuring that the results are traceable and verifiable.

Moreover, it is important to consider the specific characteristics of each industrial operation. A textile industry located in Santa Catarina may have different monitoring needs than a petrochemical industry in Rio de Janeiro. Thus, the sampling plan should be tailored to the particularities of each production process and local legal requirements.

Components of an Effective Sampling Plan

• Identification of Collection Points: Define where samples will be collected, considering water and effluent inputs and outputs.
• Collection Frequency: Establish the sampling frequency to ensure data representativeness.
• Analysis Parameters: Select the parameters to be analyzed, such as pH, BOD, COD, among others.
• Standard Methodology: Use standardized methods for collection and analysis, ensuring result comparability.

Deviation Identification: What to Look For

After collecting and analyzing samples, it is essential to interpret the results in light of established standards, such as those from CONAMA. Deviations may indicate non-compliances that require immediate corrective actions. For example, an increase in BOD (Biochemical Oxygen Demand) levels may signal problems in effluent treatment.

To identify deviations, it is crucial to have a trained team to interpret the report results and correlate them with factory operations. A common mistake is to consider only numerical values without analyzing the operational context, which can lead to incorrect conclusions.

Examples of Common Deviations

• pH Level Variation: May indicate problems in the effluent neutralization process.
• High BOD: Suggests that organic matter is not being adequately treated.
• Excess Suspended Solids: May result from failures in filtration or sedimentation.

Corrective Action: Responding to Deviations

When a deviation is identified, implementing corrective actions is the next critical step. These actions must be swift and effective to prevent environmental impacts and legal sanctions. In the context of IMS, corrective actions should be documented and monitored until completion.

An example of effective corrective action could be optimizing the effluent treatment system when identifying a high concentration of suspended solids. This may involve adjustments in coagulation and flocculation processes, as well as improvements in the filtration system.

Checklist for Corrective Action

1. Root Cause Identification: Determine the main cause of the deviation to direct corrective actions.
2. Action Plan Development: Develop a detailed plan with defined responsibilities and deadlines.
3. Action Implementation: Execute the planned actions systematically and documented.
4. Monitoring and Evaluation: Track the results of corrective actions and assess their effectiveness.
5. Procedure Update: Review and update operational procedures to prevent recurrence of the deviation.

When to Consult a Specialist

Although many industries have internal teams for monitoring and treating effluents, complex situations may require consultation with external specialists. This is particularly relevant when there are significant changes in production processes or when persistent deviations are identified that are not resolved with standard corrective actions.

Specialized consultants can offer an external perspective and identify improvement opportunities that are not apparent to the internal team. Additionally, they can assist in interpreting complex regulations and implementing advanced technological solutions for effluent treatment.

In summary, effective water and effluent monitoring in an IMS goes beyond simply obtaining technical reports. It involves developing a robust sampling plan, accurately identifying deviations, and implementing appropriate corrective actions. By adopting these practices, companies can not only ensure legal compliance but also promote the sustainability of their operations.

For more guidance on water and effluent management in the context of IMS, Legnova offers specialized consulting, helping companies achieve their environmental and compliance goals.