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Wastewater Treatment System Design, New London, CT
HRP developed a wastewater treatment system design for a pharmaceutical packaging facility. The system was designed to treat various cleaning wash water waste streams at the facility including toothpastes, ointments and lotions. The treatment system was designed to meet several criteria set forth by the client that included: limited space requirements, limited budget, and a variety of differing discharges.
We developed a sampling plan to properly characterize the waste streams and determine the pollutant load on the proposed system. Utilizing the results of the characterization as well as a review of the applicable effluent limitations for the discharge category, we selected appropriate treatment technologies for each parameters of concern. These technologies were further narrowed to meet the design criteria set forth by the client. The design separated the waste streams in order to both simplify and segregate the treatment methods so that the entire flow would not have to be treated for all parameters of concern. The pollutant stream that had a high metals concentration was segregated for batch treatment via pH adjustment while the waste streams with a higher oil and grease component were segregated for treatment via Dissolved Air Floatation. All waste streams were then designed to be treated via Rotating Biological Contactors for BOD and COD removal prior to being clarified.
All of the technologies were selected based upon a review of capital costs and operation and maintenance costs as well as the ability to treat varying waste streams to be potentially encountered at the facility.
We also conducted jar tests to determine the most effective pH adjustment and coagulation chemicals. Based upon HRP’s report, the client is currently pursuing vendors to conduct pilot tests for the recommended treatment technologies.