circular water tank Articles

  • Seven Ways Your Facility Isn’t Meeting Effluent Regulations and How to Solve Them

    Whether you own, operate, or help manage a municipal or industrial facility that deals with wastewater, it’s important to understand how wastewater treatment can play a significant role in the overall health of your business, especially when it comes to meeting effluent regulations. This is an important part of the wastewater treatment process to consider, as ignoring it could earn your ...


    By SAMCO Technologies, Inc.

  • Water depth effects on initial dilution of horizontally discharged cold water from an elevated outfall

    In this study, the effect of bottom depth interaction on initial dilution differences of cold water discharge was experimentally investigated. 5°C cooled and dye tracer added cold water were horizontally discharged from a submerged circular nozzle from an elevated position into a stagnant and homogeneous receiving water in an experimental tank. Minimum initial dilutions were measured in cold ...


    By Inderscience Publishers

  • From fresh water to waste water - AERZEN supplies oil-free oxygen to Nordland Papier

    The UPM Nordland Papier fine paper factory in Dörpen is the largest of its kind in Europe, producing up to 1.4 million tons of uncoated and coated paper every year with four machines. The company is part of UPM Paper ENA (Europe and North America), a worldwide leading manufacturer of graphic papers, with its head office in Germany and production facilities in Finland, the UK, France, Austria ...

  • 50 GPM Parallel Plate Clarifier for raw water treatment at a chemical manufacturing plant

    Challenge A chemical manufacturing company needed to clarify surface water that was being drawn from a local creek for use as a cooling agent in their manufacturing process. The existing system was 30-years old, corroded, and not very adept at handling solids after separation from the water. Space requirements were a limiting factor in the installation. ...

  • Efficient Operation of Lighting, Hot Water and Air Conditioning: Hotel Inter Continental Sydney

    To improve its environmental performance and save nearly $300,000 per year, the Hotel Inter Continental Sydney changed some practices that seemed insignificant in themselves but which collectively, wasted massive resources. The changes cost around $275,000 and no adverse affect on guest amenity. They included lowering the power of lights that were too bright, lowering the temperature of ...


  • 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 ...

  • Optimum Design of Your Center Well: Use of a CFD Model to Understand the Balance Between Flocculation and Improved Hydrodynamics

    The use of center wells (CWs) in circular secondary settling tanks (SST) has become a common practice. According to Parker et al. (1996) the main purpose of the CW is to promote the aggregation of remaining dispersed particles into settleable flocs, i.e., to promote the flocculation process inside the settling tank. Parker et al. (1996) and Parker and Stenquist (1986) showed strong evidence that, ...

  • Upgrading Pre-Existing DAF Clarifiers

    Whether a Mill is pursuing a facility wide directive to reduce water consumption or simply looking for better performance from a presently installed DAF clarifier, the advancements discussed in this overview offer proven techniques to optimize existing DAF system operations. Significant operational cost reductions can be achieved with DAF System Upgrades. In addition, increasing DAF performance ...


    By World Water Works, Inc.

  • Wastewater-Primary Treatment

    Primary Treatment is defined as a wastewater treatment process that takes place in a rectangular or circular tank and allows those substances in wastewater that readily settle or float to be separated from the water being treated. This process achieves solids separation. The solids readily available to settle to achieve sedimentation will do so in a settling tank referred as a clarifier. On the ...

  • ORP and pH Based Control of SBR Cycles for Nutrient Removal from Wastewater

    ABSTRACTContinuous monitoring of multiple process functions were conducted involving removals of BOD, TSS and nutrients, in each cycle of the SBR reactor at the wastewater treatment plant of the City of Carrabelle, FL. On line, real time, monitoring of pH, oxidation reduction potential (ORP), dissolved oxygen (DO), ammonia-N, nitrite-N, nitrate-N and orthophosphate-P demonstrated excellent ...

  • What is Wastewater?

    What is wastewater? Wastewater, the waste discharge that first comes to mind in any discussion of stream pollution, is the discharge of domestic wastewater, which contains a large amount of organic waste. Industry also contribute substantial amounts of organic waste, some of which comes from vegetable and fruit packing; dairy processing; meat packing; tanning; processing of poultry, ...

  • Bio-augmentation of fixed film filters

    Once regarded as the main process option for the waste water treatment for small communities, circular biological filters, so common on the outskirts of towns for many years, provided a reliable low cost and low profile method of treating household waste water. Quiet and robust, their simple engineering and structural design could be easily maintained by a daily visit from an operator, who, on ...


    By Greener Waste Limited

  • 10 Questions (And Answers) That May Change the Way You Aerate

    Slot Injector: How does the slot-shaped nozzle of the Slot Injector™ aeration system improve performance? The slot shaped nozzle and mixing chamber provide a larger shear surface for mass transfer than a circular jet of identical area. This unique shape results in a high percentage of gas dissolution and superior oxygen transfer rates with a 10-20% reduction in energy usage ...


    By KLa Systems, Inc.

  • Multilevel Systems

    Untitled Document Introduction A multilevel system is a groundwater monitoring device which allows ...


    By Solinst Canada Ltd.

  • New approach makes faster and efficient work of oil spills

    A comprehensive new study of oil’s behaviour in various sea conditions has resulted in significant advances in oil spill recovery using boom-style systems. Put into practice in DESMI ‘s Speed-Sweep Oil Spill Response (OSR) solution, the new approach speeds up oil recovery, increases encounter rates, covers a wider area in a shorter time and provides new flexibility in the choice of ...


    By DESMI A/S

  • What will it take to get plastics out of the ocean?

    From drones to filters to artificial islands, innovators are working to reduce the threat thousands of tons of trash pose to marine ecosystems. A few palm trees stand strong in the salty breeze. Located on the southern tip of the Pacific island chain of Hawaii, Kamilo Beach is an isolated stretch of black volcanic shoreline in the middle of nowhere. Just a few hundred yards ...


    By Ensia

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