Jul 13, 2017

Why BACS is now PAL

                   

BioChem introduced its patented Bioprocess Aeration Control System (BACS) in 2009.
Since then it has proven its effectiveness, efficiency and reliability in dozens of applications as a stand alone subsystem to control the production and distribution of the aeration process.  BACS is not the standard proportional integral (PI) loop utilizing high speed trial and error based control actions to chase the desired set-point.  Rather BACS is an intelligent system which actually calculates the volume of air required to maintain the DO setpoint by analyzing the process metabolism in real-time.  In fact, because of system response times, it is necessary to know what the oxygen demand will be 15 minutes from now in order to effectively maintain the proper DO concentration.   BACS does this.  It has a Predictive  element in its nature.

With BioChem's EDI partnership a new more holistic concept to process design and control was introduced.  This new concept called Symphony considers all the critical subsystems required to control the biological treatment process utilizing digitized intelligence throughout.  The goal is to achieve unprecedented economy and performance while providing practical, actionable information to manage the plant by incorporating such features as fault detection and isolation (FDI) and Reliability Centered Maintenance (RCM). 


Within the Symphony framework, we decided that it was more informative for our systems' names to describe not merely the "what" they do, such as Bioprocess Aeration Control, but the "how and why", such as Predictive Aeration Logic (PAL).   As mentioned above, to control something like the DO level in a very complex, dynamic and nonlinear process, you need to be predictive.  You need a PAL.       BACS = Your PAL.  

Sep 9, 2016

PAR = Precision Automation with Reliability

Can automated process optimization and aeration control really work to save significant energy (50%!), while meeting stricter effluent limits?  And all with the peace of mind of robust and reliable, true hands free functionality?  You bet.  Consider two recent cases in which BioChem's control solutions were dramatically successful despite very different processes and equipment.   Please read about these projects here.

PAL = Predictive Aeration Logic

PAL or Predictive Aeration Logic, is the concept under which BioChem's patented Bioprocess Aeration Control System (BACS) is being marketed as part of EDI's Symphony program; a technology suite designed to deliver the best possible process performance at the least cost, while also delivering the peace of mind that comes from real, robust and reliable automated control.

To see a little bit of just how well PAL works see article here.   To see a more detailed case study click here!

Sep 8, 2016

What some of our customers and partners have to say about us

Don't just take our word for it...

Rather see what some of our customers and partners have to say about working with BioChem and the performance of our solutions. Read it all here.


Aug 23, 2016

What is Symphony?

The Symphony concept embodies the vision behind BioChem's recently announced partnership with Environmental Dynamics International (EDI).  EDI's extensive aeration products and expertise are combined with BioChem's industry leading biological process knowledge and intelligent, fully automated optimization and control technologies.  The result is a comprehensive technology suite which orchestrates all the critical subsystems of secondary treatment for unparalleled efficiency and performance.  Let Symphony select the proper aeration equipment, arrange your process, and "conduct" your plant's operating systems: blowers, valves, pumps and instruments in perfect harmony.  


The idea behind Symphony isn't just to make different equipment work, but make the complete system work, togetheras a system, while BioChem's control logic insures optimal performance and maximum efficiency under all operating conditions; automatically.   It can be adapted to any process type, as well as blowers, valves or instruments of any type or manufacture.  It is infinitely and seamlessly scale-able.          

To learn more about Symphony, visit EDI's website at wastewater.com, or simply click here.

Aug 17, 2016

Reaping the Rewards of Automation

23.8% aeration savings from B.A.C.S. Bioprocess Aeration Control System




Background:

The Camelot WRF located in the City of Kissimmee Florida was upgraded from a 3 MGD MLE process to a 5.5 MGD (average annual daily flow) facility.

To extend the facility's aeration capacity, the plant installed a bank of (4) 125 hp turbo blowers - each theoretically capable of delivering 2650 SCFM at 8 PSI with a rise to surge of 1.5 psi.


Birds Eye view of facility
The facility is unmanned at night and requires robust automation and remote monitoring capabilities. Additionally, the facility experiences a hydraulic and ammonia loading peaking factor of approximately 1.5 and 1.6 respectively,  presenting an excellent opportunity for a DO/aeration control system. To accommodate these requirements and opportunities, the Bioprocess Aeration Control System (BACS) was integrated into the plant's existing SCADA network and commissioned over a 1 week period. 


Precise Aeration Control:

The BACS adjusts the valve position of each of Camelot's 6 aeration control zones and trims the blowers up and down in order to maintain the plant's user defined zone specific DO setpoints using BioChem's patented Oxygen Uptake Rate Factor (OURf) technology and energy saving field tested Most Open Valve logic.


The OURf is calculated based on the real-time metabolic rate of the biology and then fed through a predictive algorithm.  As a result the plant controls to within .5% of the user defined DO setpoints on average 96.8% of the time (see figure below):

DO Setpoint tracking performance of BACS
This kind of precise matching of actual DO to the operational setpoint, simply cannot be achieved with conventional (Proportional Integral) based control schemes.  The environment is too dynamic, the relationships nonlinear, and the time delay too great.  The BACS represents unparalleled control performance.  


Substantial Energy Savings = Excellent Return on Investment:

The data reveals  an aeration savings of approximately 23.8% over a manual control baseline.  Given the facility's electricity cost of .11 $/kWh, this translates to a savings of approximately $21,300 annually. 

Total airflow to secondary treatment. Red line represents running
at a static airflow capable of treating 95% of the plant's demand
scenarios.
Given this information - the BACS installation at this site, under these loading conditions, fully pays back the investment in two years.  


User Friendly Control Interface:

The BACS System comes with a very user friendly HMI which can be customized on startup to the operators specifications.  All vital information and controls are literally at one's fingertips.

"Process Overview Screen" - Modified to
accommodate the lead operator's preferences
 

Jun 21, 2016

BioChem Technologies partners with EDI for the marketing and distribution of its industry leading process control solutions

King of Prussia, PA – BioChem expands market access with newly formed partnership with Environmental Dynamics International (EDI), wastewater.comThrough this partnership arrangement, EDI will have the exclusive rights to market and distribute BioChem's industry leading process control solutions. 

EDI, headquartered in Columbia, Missouri has been a leader in the development, manufacturing, and installation of advanced aeration products and solutions for over 40 years.  EDI has been recognized with many honors and awards including the coveted E-Star from the United States Department of Commerce. 

EDI's Chairman, Charles Tharp provided this rationale for the partnership:  "This represents a major expansion of EDI's capability to deliver superior aeration mixing solutions for biological treatment systems.  The combination of predictive aeration logic and premium EDI aeration hardware will deliver unprecedented levels of performance in biological and aeration systems."

George Lee, BioChem's longtime CEO and the father of its innovative technologies, and newly appointed CTO stated: "BioChem will continue to expand its knowledge and apply its core competencies in the complex and nuanced bio-chemical dynamics in the wastewater segment.  The partnership with EDI for the distribution of our control solutions allows us to more quickly realize our shared goals and vision; which is to essentially transform the way wastewater treatment systems are built and operated, so as to incorporate the most advanced, efficient and effective wastewater treatment strategies that modern technology allows. 

Further, Mr. Lee advised:  “The partnership also allows us to focus and increase the value that we deliver to the industry through our engineering services business.  These relationships have been particularly rewarding, and we look forward to continuing and growing this client base.”