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REAL-TIME DETECTION OF SHOCK LOADING EVENTS IN WASTEWATER

October 31, 2019Real Tech

Wastewater quality can change drastically and quickly – particularly in the case of industrial discharges – to generate shock loads within the wastewater treatment system. In addition to potential operational problems such as increased chemical and aeration demand, shock loading also has the potential to affect regulatory compliance if wastewater cannot be treated properly. Monitoring organics ,BOD, early in the municipal wastewater treatment process empowers you to:

  • Detect and identify industrial discharge events
  • Optimize chemical addition for incoming wastewater COD/BOD, decreasing the potential for under- or overdosing
  • Improve clarifier performance, increasing sludge quality and reducing handling costs
  • Limit the potential for non-compliance of plant effluent

Real Tech’s BOD/COD monitoring systems provide continuous online measurement of COD and/or BOD, which are the most relevant to assess wastewater quality. Our real-time solutions detect shock loads in wastewater before they reach treatment, giving you the ability to prepare for treatment and avoid non-compliant effluent.

 

ORGANIC SHOCK LOADING IN MUNICIPAL WASTEWATER

Industrial discharge can contain high concentrations of organic material and other contaminants. Incoming wastewater quality to a municipal treatment plant can change rapidly in the case of an industrial discharge event, creating an unexpected shock load. These events impact normal plant operations, and are known to cause treatment process problems, increased operational costs and in some cases, deteriorated effluent water quality. To manage shock loading events, WWTP may be operating with a buffer to minimize the impacts on water quality, however this tends to result in high operational costs. A better and more cost-effective solution to shock load management is continuous monitoring of key water quality parameters, biological oxygen demand (BOD) and/or chemical oxygen demand (COD), that can provide an early warning of industrial discharge events and feedforward information for effective treatment.

LAB TESTING FOR ORGANICS = DELAYS & MISSED OPPORTUNITIES

BOD and COD are very useful water quality parameters for wastewater treatment operations. Unfortunately, these labor-intensive laboratory tests take hours to days to generate results, creating a significant delay. When results are received from the lab, the information is usually of litter value for event detection purposes or process control. This delay presents a missed opportunity for operators to detect events when they occur and adjust or optimize their treatment system accordingly.

REAL-TIME ACTIONABLE INFORMATION

Real Tech’s real-time BOD/COD monitoring systems are advancing how wastewater is managed. The systems provide far superior data both spatially and temporally by continuously analyzing the water onsite as opposed to laboratory testing methods which analyze small volumes that are widely spread over time. This allows the WWTP to quickly identify events that would otherwise go unnoticed, better monitor discharge trends, and provides much greater control capabilities.

BENEFITS OF MONITORING FOR EVENT DETECTION AND TREATMENT OPTIMIZATION

Continuous BOD/COD monitoring provides the earliest warning of a shock load event entering the plant. This critical information not only helps eliminate the headaches and potential operational problems caused from non detection, but also provides the operations staff with actionable information that can be used to adjust the plant’s operational parameters to ensure effluent standards are met.

The addition of chemicals into the primary clarifier or aeration tank can be optimized with real-time organics information. Dosing chemicals based on current water quality conditions ensures enough chemicals are added to achieve treatment goals, while avoiding the addition of excess chemicals, or overdosing. Optimizing the dose helps to reduce the costs associated with these expensive treatment aids, especially during events, while maintaining the desired effluent quality.  The same optimization abilities can be achieved in the aeration basins, enabling operators to increase aeration rate when needed during events to boost treatment or decrease the aeration rate for low organic load wastewaters to save energy and costs.

SIMPLE AND AFFORDABLE BOD/COD MONITORING

Real Tech’s UV-VIS sensors use absorbance of light to measure organic compounds that have a natural peak absorbance in the UV light spectrum. The sensors provide a multi-dimensional measurement of organic material that enables robust correlations to be established for aggregate organics parameters BOD and COD. In additional, the sensors are capable of detecting changes in the composition of organic load independent of the level of organics, providing more advanced event detection capabilities. Real Tech’s innovative technologies combine with automatic cleaning systems keep maintenance and costs at a minimum, making our affordable BOD/COD monitoring systems the ideal choice for municipal wastewater BOD organics monitoring.

Discover more about Real Tech’s real-time BOD solutions here.

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