pond design Articles

  • Performance of modified design pond sand filters

    Two pond sand filters (PSFs) with modified design were constructed in Pathorghata Upazila of Barguna District located in southern Bangladesh. Performance assessment of the PSFs was done after commissioning in terms of quality of filtered water, ease of operation and maintenance, monthly check-up of production capacity/efficiency of the filters, users' participation and acceptability of the ...


    By IWA Publishing

  • Taking wind into account in the design of waste stabilisation ponds

    Up to now, most investigations on the dependency of the fluid flow patterns and performance of waste stabilisation ponds (WSPs) on wind speed and direction and pond layout have been performed using 2D and 3D CFD steady state isothermal models. 3D non steady state models integrating thermal processes and boundary conditions taking into account the full influence of meteorological factors are ...


    By IWA Publishing

  • Waste Stabilization Ponds and Constructed Wetlands - Design Manual, 2005

    The design manual for waste stabilization ponds and constructed wetlands presented in this CD ROM gives a comprehensive technical information about their planning, design and operation. Also a number of numerical models are included to assist in finding the size of a constructed wetland or stabilization pond, reduce the concentration of heavy metals, phosphorous and nitrogen amongst other ...


    By IWA Publishing

  • Industrial Pond Treatment

    This small municipality was experiencing difficulty in maintaining dissolved oxygen levels in their industrial ponds. During the processing season, they were receiving 3MGD of industrial wastewater from tomato and green pepper processors. During the previous season, they had been out of compliance on numerous occasions and received several complaints from the public concerning odor from the ...


    By Integrated Engineers Inc.

  • Oxygen, the fix for pond problems

    Aeration of a water feature should have three main considerations. These include preventing thermal stratification, balancing the dissolved oxygen levels throughout the water column from the sludge or benthic layer to the surface and balancing temperature levels throughout the water column. Although oxygen transfer from certain methods may be significant, the greatest amount of oxygenation takes ...


    By EP Aeration

  • UASB-polishing ponds design parameters: contributions from a pilot scale study in southeast Brazil

    This paper presents the results of five years monitoring of an experimental wastewater treatment plant in southeast Brazil, comprised of a UASB reactor followed by a submerged aerated biofilter (BF) (field scale) and shallow polishing ponds (pilot scale). Three ponds in series achieved high quality effluent standards in terms of ammonia and E.coli, but a fourth pond did not result in further ...


    By IWA Publishing

  • Assessment of classical surface organic loading design equations based on the actual performance of primary and secondary facultative ponds

    This article presents results from a performance evaluation of 73 full-scale primary facultative ponds and 37 secondary facultative ponds in Brazil. The data were used to test the applicability of some classical design equations for recommended surface BOD loading rates. The empirical equations proposed by Mara in 1976 and 1987 and the equation developed by McGarry and Pescod in 1970 were ...


    By IWA Publishing

  • £1.3m to help waning pond life

    Thanks to the Heritage Lottery Fund (HLF) more than £1.3 million has been awarded to a scheme designed to train a wide variety of people as “citizen scientists”, enabling them to monitor and protect ponds and streams that play home to a large amount of British ...


    By Aquaread Limited

  • The Advantages of a Box Welded Pond Liner

    There’s no time like the New Year for good intentions – and one which will pay dividends for many years to come is to create a garden pond. One of the first choices you’ll have to make is the type of liner to use. The material itself is a no-brainer – always use a synthetic rubber liner rather than polythene; synthetic rubbers are much tougher and longer lasting than the ...


    By Russetts Development Ltd

  • Considerations for test design to accommodate energy‐budget models in ecotoxicology: A case study for acetone in the pond snail Lymnaea stagnalis

    Toxicokinetic–toxicodynamic (TKTD) modeling offers many advantages in the analysis of ecotoxicity test data. Calibration of TKTD models, however, places different demands on test design compared with classical concentration–response approaches. In the present study, useful complementary information is provided regarding test design for TKTD modeling. A case study is presented for the pond ...


    By John Wiley & Sons, Ltd.

  • Managing Ponds for BOD Reduction and Odor Control

    A large number of food processors utilize ponds to treat their wastewater. Most of the time these ponds are aerobic in which they use oxygen to degrade the wastewater biological oxygen demand (BOD). Fruit and vegetables contain a high amount of simple sugars and other organic compounds that when exposed to water are released into the water stream. These organic compounds require oxygen to degrade ...


    By Integrated Engineers Inc.

  • Productivity Gains in Stormwater Design

    For some engineering consultants, traditional stormwater pond design can be one of the most frequent projects within their services portfolio. An engineer with prior experience can size and produce plans with assistance from modeling software, AutoCAD, and supporting tools with relative ease. But even very routine projects can benefit from modeling software improvements. McBade Engineers and ...


    By XP Solutions

  • Effect of baffles on the hydraulic performance of sediment retention ponds

    An investigation of the effect of baffles on retention pond performance using a physical model of an existing sediment retention pond is presented. Analysis of residence time (RTD curves) was used to compare the hydraulic performance of different arrangements of baffles in the pond. Five different arrangements for the design of baffles were studied. The results show that placing a single ...


    By IWA Publishing

  • Duck Pond Cellars (Lagoon Cleanout) - Case Study

    TenCate develops and produces materials that function to increase performance, reduce costs, and deliver measurable results by working with our customers to provide advanced solutions. THE CHALLENGE Wineries around the world utilize waste lagoons to deposit the waste products from the wine making process.  This includes the pulpy residue, known as "pomace", and the ...

  • How do you clean a stormwater management pond?

    How do you clean a stormwater management pond (SMWP) without draining the pond first? A clean-out of the SWMP is required once every 5-15 years to remove accumulated sediments to ensure the pond continues to function as intended. Drainage of the SWMP is not always required to facilitate the clean-out. By combining the pumping and excavation into one process! New pumping technology - Dragflow ...


    By Aquatech Dewatering Company

  • Benefits of a BaySaver Separation System for Wet Pond Pretreatment

    There are instances when a BaySaver Separation System may be used as a pretreatment device for a wet pond; when environmental regulations require it; or when a stand alone physical separator is not enough to meet an 80% removal efficiency using solely this product. There are cost benefits associated with using BaySaver products in conjunction with other Best Management Practices (BMPs). In the ...


    By BaySaver Technologies, Inc.

  • Effects of scale and Froude number on the hydraulics of waste stabilization ponds

    This paper presents the findings from a series of computational fluid dynamics simulations to estimate the effect of scale and Froude number on hydraulic performance and effluent pollutant fraction of scaled waste stabilization ponds designed using Froude similarity. Prior to its application, the model was verified by comparing the computational and experimental results of a model scaled pond, ...


    By IWA Publishing

  • Ecology of duckweed ponds used for nutrient recovery from wastewater

    The microorganism community that grows under duckweed shelter can play an important role on treatment processes. Therefore, the present study aimed to assess the zooplankton dynamic and microbial community in duckweed ponds (DPs) applied for domestic wastewater treatment under open field conditions. A pilot system comprised of two DPs in series (DP1 and DP2), with 10 m2 each, received domestic ...


    By IWA Publishing

  • Saline Pond Multi-Layer Liner System - Case Study

    Gas operation benefits from the conversion of a single-liner system to a double-liner with leak detection monitoring Extensive gas operations near the North Saskatchewan River in Fort Saskatchewan, Alberta, are understandably closely regulated. To help the client remain well above compliance requirements and expand their leak detection capabilities, Nilex implemented the ...


    By Nilex

  • Scanning for Leaks & Sinkhole Detection in a Retention Pond - Case Study

    In January 2015, one of our clients used AGI tools and software for leak and sinkhole detection in the liner of a retention pond in Tennessee. Process Our client’s customer had a retention pond that was designed to hold liquid, but it was leaking through a hole in the liner. The client used the ...


    By Advanced Geosciences, Inc.

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