short-term bod Articles

  • Measuring Short-Term BOD

    Measurement of oxygen uptake rates in activated sludge processes is essential to their satisfactory operation. Traditionally, oxygen uptake rates (OUR) have been determined by using a dissolved oxygen probe to measure the change in dissolved oxygen in a BOD bottle. While this method is rapid, it provides only a snapshot, at a single point in time, of the oxygen uptake rate reaction in a treatment ...


    By Challenge Technology

  • Investigation of High BOD in Final Plant Effluent

    The Detroit WWTP had experienced intermittent high BOD in the dechlorinated final plant effluent from September 2003 to October 2004 and was not related to wet weather events. No NPDES violations occurred. A short-term cost effective laboratory investigation was initiated during the months that the intermittent high BOD values were occurring to determine possible causes. The results of the ...

  • Biodegradability of Dissolved Organic Nitrogen: Adaptation of the BOD Test

    To prevent eutrophication in receiving waters, many astewater treatment plants are being firected by regulatory agencies to achieve very low levels of total nitrogen (3-4 mg/L TN or lower) in the effluent. Dissolved organic nitrogen (DON) component is included within these total nitrogen limits. The regulations assume that DON is completely biodegradable, and therefore needs to be included in any ...

  • Quaker oats uses skimmer to reduce wastewater BOD

    The Quaker Oats plant in Peterborough, Ontario, Canada produces some seven million cases of Harvest Crunch® cereal and cake mixes annually. In the process, residue from the conveyors, dryers and other processing equipment ends up on the floor. Periodic equipment washdowns add water to the solid and liquid residue, which contains edible fats, starches and sugars. During house-cleaning operations, ...


    By Abanaki Corporation

  • Case study: Innovative portable package wastewater treatment plants

    DEVISE ENGINEERING S.A. has designed, engineered and is currently producing a new series of State of the Art Portable Sewage Treatment Plants (PSTP), incorporating advanced Ultra-Filtration (MBR) technology. These Plants are used for multiple “emergency” & “short-term” purposes with the ability to re-use the treated effluent. The particular Portable STP can be easily ...


    By DEVISE ENGINEERING S.A.

  • 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.

  • Evaluation and comparison of methods used for the determination of BOD first-order model coefficients

    Different methods used for the determination of BOD first-order model coefficients were evaluated and compared in terms of their prediction of the first order model equation. Usually, these methods were compared in terms of their prediction of the experimental data obtained in the laboratory, not the first order equation. The least square method, Thomas method, Fujimoto method, and a new method ...


    By Inderscience Publishers

  • Two environmental laboratories, 1 private and 1 government, optimize automation and ROI with investment in BOD/Titrate duo (case study)

    MANTECH INC. is a leading manufacturer of automated multi-parameter, titration, BOD and COD laboratory instruments. Both a Private and Government Environmental Laboratory required optimized return on investment for both automated BOD/CBOD and automated multi-parameter systems. They each invested in the MANTECH BOD/Titrate Duo. Background Each laboratory identified ...


    By MANTECH INC.

  • Poultry Food Short

    This facility processes, seasons, cooks, and flash-freezes poultry products and wanted to increase their production. The existing wastewater system could not meet the discharge requirements to the local POTW (city) and more stringent limits were imposed as a condition of their expansion. The facility was looking at a tremendous capital improvement cost to increase the size of their wastewater ...


    By Integrated Engineers Inc.

  • Performance and quality analysis of membrane cartridges used in long-term operation

    In this study, operation and maintenance performance in two long-term operating Membrane Bioreactor (MBR) wastewater treatment facilities were investigated. One facility in Japan started its operation in 1999 showed that both effluent BOD and n-hexane extracts were less than 5 mg/L, and a cumulative replacement percentage (CR%) of membrane cartridges was 7.8% as of 2008. Another facility in the ...


    By IWA Publishing

  • St. Claude wastewater case study

    The dairy plant located in St. Claude, Manitoba was facing operational and regulatory pressure due to the significant amounts of BOD it was discharging into the community wastewater system. Levels of BOD discharged from the plant were steadily increasing creating pressures on the Town’s lagoon system, increasing from 450 mg/L in June – November 1990 to 2,512 mg/L in the January ...


    By Nordevco Associates Ltd.

  • Ozone for Waste water Treatment

    Ozone has been used for many years to treat pathogens such as bacteria and algae in water for applications such as drinking water supplies and air conditioning system cooling water. More recently, most water bottlers have adopted ozone. Ozonated water for treatment of fruit, vegetables, fish, etc. in the U.S. awaited the GRAS approval. Now that has happened, and projects are emerging everywhere. ...


  • Biodegradable organic matter in domestic wastewaters: comparison of selected fractionation techniques

    The first objective of this work was to evaluate the ability of the long-term BOD tests to provide the total biodegradable COD (BCOD) for domestic wastewaters. Results show that the method is repeatable (using two different volume samples, 97 and 164 mL) and that the fractions of BCOD determined were not statistically different from the one obtained by respirometry (at low S/X ...


    By IWA Publishing

  • Assessment of treatment capabilities of Varthur Lake, Bangalore, India

    Manmade waterbodies have traditionally been used for domestic and irrigation purposes. Unplanned urbanisation and ad-hoc approaches have led to these waterbodies receiving untreated sewage. This enriches and eutrophies the waterbody. A physico-chemical and biological analysis of sewage-fed Varthur Lake in Bangalore was carried out and its treatment capabilities in terms of BOD removal, nutrient ...


    By Inderscience Publishers

  • Flavour Industry Wastewater Management Case Study

    This study is carried out to propose an appropriate treatment technology for wastewater discharged from a flavor production factory. Industrial wastewater discharged from this factory ranges between 50–70 m3/d with an average value of 60 m3/d. The major source of pollution in this factory is due to cleaning of the vessels therefore the treatment has been carried out on the end-of pipe wastewater. ...


    By Springer

  • Floating baffle system improves lagoon efficiency by 90%

    Industries and municipalities that deal with wastewater treatment are concerned with improving the efficiency of their wastewater treatment facilities. Lagoon efficiency, cost effective treatment, and low maintenance are important factors when purchasing treatment upgrades. Environetics, Inc. took these factors inlo consideration when they designed the Director floating baffle System. ...


    By Environetics, Inc.

  • The Hybrid Membrane Biofilm Process (HMBP): A Novel Approach to Achieving Biological Nitrogen Removal in Activated Sludge

    ABSTRACT The hybrid membrane biofilm process (HMBP) is a novel technology for removing total nitrogen (TN) from municipal wastewater. Air-filled, hollow-fiber membranes are placed in an activated sludge basin, and the bulk liquid is left anoxic. The membranes support an aerobic, nitrifying biofilm, while produced nitrite and/or nitrate is exported to the bulk liquid and reduced with BOD as ...

  • Comparative study on treatment of kitchen-sink wastewater using single and multichannel ceramic membrane

    A comparative study was conducted to explore the potential of ceramic microfiltration membrane alone and in combination with different physicochemical treatments, viz. biotreatment and adsorption using kitchen-sink wastewater. Cross-flow microfiltration (CMF) studies were carried out with tubular ceramic membrane in single channel and multichannel configuration. Biotreatment was studied using ...


    By Inderscience Publishers

  • Treatment of dyeing effluent from tannery using membrane separation processes

    Treatment of a dyeing bath of a tannery was carried out using a hybrid membrane-based separation scheme consisting of Nanofiltration (NF) followed by Reverse Osmosis (RO). Experiments were conducted using a cross-flow cell in continuous mode. The performance criteria of the separation scheme were evaluated in terms of dye concentration, Chemical Oxygen Demand (COD), Biological Oxygen Demand ...


    By Inderscience Publishers

  • Biosorbent-assisted ceramic microfiltration process for treatment of herbal pharmaceutical wastewater with high organic loading

    The feasibility of treating herbal pharmaceutical wastewater with high Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) values was studied using ceramic microfiltration membrane in combination with an adsorptive treatment. Batch kinetic and isotherm studies were carried out under varying dosages of a biosorbent prepared from the roots of Eichhornia crassipes (ECR). Adsorption ...


    By Inderscience Publishers

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