Waste water monitoring solutions for wastewater treatment industry

Improved waste management through automation can deliver more efficient waste treatment, reduced energy and chemical consumption and improved effluent quality. The cost of treatment and trade discharge can thus be significantly reduced.

Progressively more and more companies are installing instruments to monitor raw effluent and limit the load reaching a balancing tank. Diverting peak loads can dramatically reduce the strength of effluent needing primary treatment, resulting in a more homogeneous waste that is simpler to treat. Consequently, discharge consents are more easily maintained. TOC can monitor in real time and divert peak organic loads, Turbidity can indicate the Suspended Solids and pH is also frequently installed.

Biological treatment is extensively used to treat sewage and industrial effluent, principally to remove ammonia and reduce organic loading. Controlling aerobic and anaerobic digestion using Dissolved Oxygen and Suspended Solids is extensively installed to optimise treatment and regulate aeration - saving money. More recently, determination of ammonia within the activated sludge has also been shown to be beneficial.

Toxicity may affect aerobic and anaerobic systems. Some sites receiving significant industrial effluent such as agrochemical and metal plating waste, may be subjected to acute and chronic toxicity inhibiting nitrification. Toxicity and TOC measurement at the inlet to sewage works can be used to provide forward control and protect the treatment process.

Total Nitrogen and Total Phosphate are parameters that are likely to be introduced by the EA as consent parameters for specific catchments in the very near future. As a consequence, treatment may need to be upgraded to remove these nutrients and monitors installed to efficiently control this treatment process.