Effluent Treatment

Bore hole water, towns water, potable water, demineralised water and RO water are all found in processes across a wide range of industries and each has an associated cost of supply, or cost of production.

There is a secondary cost associated with the source water too which is the cost of treating it once is becomes wastewater; whether for discharge or for recycling.

Wastewater treatment is absolutely critical.  Get this right, and you will avoid pouring money down the drain.  The best way of saving money on treating wastewater, is by not having to treat wastewater in the first place.

We can’t eliminate water from the process but we can reduce the amount we use.  In some industries, there can be a tendency to run a water source for prolonged periods, either for the duration of a shift or for the full duration of a working day and often irrespective of the amount of work being processed.

Our own research indicates that the amount of wastewater can be reduced by up to 50% with the installation of a Rinse Water Controller.  This device measures the conductivity of the rinse water and will automatically stop and start the water supply, to ensure that a set dilution of rinse water is maintained.  This means that source water is only provided when required.

The wastewater used will still need to be treated, and many effluent plants have settlement systems to remove the heavy metals dissolved in the solution.

ph settlement graph
The associated graph depicts the pH value for the best settlement for dissolved metals.  For the best results, an efficient pH neutralisation system prior to settlement, is a must.

We now offer a panel mounting (P7687) and surface mounting (P6587) pH controller that both offer PID control of our Red Dosing Pumps.

Using the proportional integral and derivative control loop gives very accurate control of the pH correction, limiting the use of the dosed chemical reagent to only the amount required to correct the pH.  These systems are suitable for dosing acids, caustic or even lime solutions and reduce the volume of chemical reagent used to correct the pH, saving money that would otherwise be spent on chemicals.

With an efficient pH neutralisation system, dosing a coagulant (flocculent / polymers) will assist with the settlement process, but as many coagulant dosing systems are manually controlled, these can also be a source of waste.

We can reduce the amount of chemical required during the settlement phase by dosing the coagulant proportional to flow.  This maintains the efficiency of having coagulant present during the settlement process and as only the correct amount is added, the amount of chemical used, can be significantly reduced.

Reporting back to a water authority is the final critical phase of the wastewater or effluent treatment process.  Many will ask for final flow, pH, temperature and turbidity / suspended solids figures, to be submitted as a condition of a consent to discharge agreement.

As we already supply the sensors, we now offer a number of data-logging solutions to speed up this process, including our new Online Data-Logger.

The Online Data-Logger uploads all the sensor measurements to the cloud, without having to be integrated into an existing or new IT system.  As all the data is stored on the cloud, generating a report only takes a few clicks; offering the biggest saving of all, your time!

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