clarifier settling Articles

  • Egg Processing

    Problem: This eggplant, located in Southern California, pro¬duces approximately 6 million eggs per week. During the process and preparation of these eggs, some break and fall on the floor where they are washed into floor drains and mixed with the egg wash water. The mixture of broken eggs and wash water is discharged to a balance tank and then sent through a settling ...


    By HydroCal Inc.

  • Foaming and filament reduction at a municipal wastewater treatment plant case study

    Before Subject: Reducing foam and filaments at a municipal wastewater treatment plant. Product Applied: MICROCAT-DNTRF Fat, Oil and Grease Degrading Bioformula Objective: Reduce the filament infestation and foaming caused by excessive fat, oil and grease in the influent wastewater coming into the treatment plant. ...


    By Bioscience, Inc.

  • Monroe Clarifier provides cost-effective expansion of manufacturing capacity via wastewater reclamation and re-use

    Challenge A PVC resin manufacturing plant was looking to expand its operations without purchasing additional water supply, a limiting factor in the expansion decision. In order to do so, the plant had to clarify and re-use the process water that was being discharged from a centrifuge. This wastewater contained PVC fines that had to be removed before the water was suitable for re-use. ...

  • Groundwater Remediation Case Study

    Wastewater Treatment Success Stories Groundwater Remediation This sample is representative of the ground water that contains diesel fuel from years past. The facility currently uses traditional ...


    By Integrated Engineers Inc.

  • Case Study - KIA E-Coat Wastewater and Treatment Process

    KIA Automotive uses a water-borne Electrodepostion (E-Coat) paint process that produces various wastes including rinse waters containing Zinc (Zn), Nickel (Ni) & phosphorous (P) waste. Most of the waste is found in the rinse waters from the e-coat overflows that contain less 1000 mg/l TSS. Some of the “dumps” contain detactified paint waste concentrate in small quantities. The various ...

  • Commissioning and operating submerged membrane bioreactors: a designer's perspective

    Submerged Membrane Bioreactor (MBR) applications for wastewater treatment have taken off in recent years in New Zealand. From designer perspectives, the membrane modules replace the conventional secondary clarifier, thus eliminating solids settling issues and reducing plant footprint. This paper discusses the recent experiences of Harrison Grierson Consultants Limited designing and commissioning ...


    By Inderscience Publishers

  • Application of a CFD Model to Improve the Performance of Rectangular Clarifiers

    There has been a long standing debate about the relative merits of circular and rectangular clarifiers. Both have been shown to be capable of excellent performance and both have experienced problems. The hydrodynamics of each configuration under similar hydraulic loading differ in fundamental aspects that determine what types of geometric modifications are likely to improve the clarifier ...

  • Columbus, Texas - Case Study

    The Columbus WWTP was receiving an overload of grease from restaurants. Some of the grease was traveling only 150 yards before discharging directly into the WWTP. Because of the grease received at the plant, there was little settling occurring in the 30-minute settling tanks, despite personnel maintaining a low mixed liquor in the aeration basin. The plant was hauling off up to seven loads of ...


    By BioCOPE Inc.

  • Project WWTW Paper Mill - Case Study

    Industriewater Eerbeek (IWE) in the Netherlands, is responsible for the purification of the effluent from three different paper mills (approx. 4 million m3 of waste water per year). In summer 2018 IWE experienced a world first with a new decalcification process for reducing the calcium content of the effluent water. Now effluent can be reused as process water in ...


    By Landustrie Sneek BV

  • Hoosac WQD Williamstown, MA

    An aging primary and secondary treatment facility coupled with increased loadings to the co-settling primary clarifier resulted in the need to upgrade the Hoosac WQD. An important component of the upgrade was biosolids handling. Tighe & Bond selected the belt filter press as the bases of design for this 5.37 MGD average daily flow facility. The co-settled primary and secondary sludge is ...


    By BDP Industries

  • Pima County, Tucson, Arizona - Case Study

    Pima County’s Roger Road wastewater treatment plant has a daily flow of 36 MGD, and some of the flow must travel 28 miles before reaching the plant. The plant also receives discharges from a State prison and a Federal prison. In an effort to control odors and septicity, the collection system was treated with three products – Bioxide, sodium hypochlorite and magnesium hydroxide. Even ...


    By BioCOPE Inc.

  • Pulp & Paper Mill’s #1 ASB Lagoon cleanout goes directly into Geotube containers - Case Study

    Abstract: Integrated pulp & paper mill with an aerated stabilization basin built in 1969 was so full of solids that the mill was having several problems: degradation of treatment performance, inability to access aerators for maintenance, safety concerns, high energy usage, severe short circuiting. The decision was made that #1 Lagoon must be cleaned out. Evaluation of all types of ...

  • Ammunition Manufacturing

    An ammunition manufacturing facility was having problems removing copper and zinc from their 900 gpm wastewater system. The process used lime to raise the pH from 1.5 to 10, sodium carbamate for a metal precipitant, and an anionic flocculant to increase the flock size and get the solids to settle in the clarifier. Current chemical costs are estimated at $225,000/year with a significant amount of ...


    By Integrated Engineers Inc.

  • Characterizing shallow secondary clarifier performance where conventional flux theory over-estimates allowable solids loading rate

    The performance characteristics of relatively shallow (3.3 and 3.7 m sidewater depth in 30.5 m diameter) activated sludge secondary clarifiers were extensively evaluated during a 2-year testing program at the City of Akron Water Reclamation Facility (WRF), Ohio, USA. Testing included hydraulic and solids loading stress tests, and measurement of sludge characteristics (zone settling velocity ...


    By IWA Publishing

  • Development of Final Sedimentation Tank Maximum Operating Capacity Curves Using Vesilind Settling Parameters and Mathematical Modeling

    New advances in development of maximum operating capacity curves using final sedimentation tank (FST) computational fluid dynamic (CFD) package – High Accuracy Clarifier Model (HACM©) and Vesilind settling parameters (Vo and k) were successfully applied in a recent project at the Sai Kung Sewage Treatment Works of the Drainage Services Department (DSD) in Hong Kong. The advances consist of more ...

  • Auto parts manufacturer reduces coolant purchase costs and eliminates used coolant disposal in first 12 months case study

    Challenge When Ogura Corporation, a Detroit based parts manufacturer, was faced with the dilemma of excessive coolant consumption, PRAB’s Fluid Filtration division was able to offer the optimal solution: Coolant Recycling. Ogura’s primary business activity is the manufacture of air conditioner parts for the automotive industry. One of their major customers is the Ford ...


    By PRAB, Inc

  • Montemorelos wastewater plant case study

    Performance History and Discussion In-Pipe Technology Company, Inc. was selected with goals to improve the biological treatment capacity at the wastewater treatment plant (WWTP) without capital expansion of the current facility. Due to the inability to make a capital investment to expand unit operations and processes, a municipal treatment plant in Montemorelos can not meet the needs of a ...

  • “Guardian”, extending coolant life for the auto industry

    Challenge Automotive component manufacturer needs a central fluid collection system for tramp oil and suspended solids removal, bacteria control and fluid concentration adjustment. Customer Ogura Corporation Industry Automotive Parts Manufacturer Products Mobile Sump Cleaner Guardian ...


    By PRAB, Inc

  • Steel finishing mill - Case study

    Application Steel Finishing Mill Industrial Waste Water Treatment Facility Material: Primarily Iron Oxide and Calcium Carbonate Settled out in Clarifiers Incoming Slurry 10 – 35% Solids Problems & Challenges Two Existing Vacuum Drums are Obsolete and One Already Out of Service ...


    By Sebright Products, Inc.

  • Deepwell injection

    Project profile: BP Chemicals DATA: End User: BP Chemicals Location: Lima, Ohio Commissioned: November 2000 Units: (2) FDB-64P Hydromation, Deep Bed Filter Flow Rate: 1,300 gpm Process: Solids removal prior to deep well disposal ...


    By Filtra Systems

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