BOD level Articles

  • 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.

  • In-Situ® RDO® Methods for Analysis of BOD, CBOD, and DO

    Background — Dissolved Oxygen Measurement Since the publication of the Winkler method for measuring dissolved oxygen (DO) (Winkler 1888), the analysis of DO levels for water has been key to determining surface water purity and ecological wellness. The Winkler method is still one of only two analytical techniques used to calibrate oxygen electrode meters, the other procedure being based ...


    By In-Situ, Inc.

  • 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

  • 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 ...

  • Case study - Supplemental aeration system reduces high BOD levels and solves odor issues - Sparta, MI

    The Problem: A leading fruit juice company had expanded over the past ten years and increased wastewater flow from 7,000 to 11,000 gallons per day (gpd), without upgrading its wastewater treatment plant. The existing system consisted of an equalization tank, three conventional aeration tanks in series, and four rotating biological contactors (RBC) in parallel. The plant was able to reduce the ...


    By Mazzei Injector Company, LLC

  • The impact of chlorine disinfection on biochemical oxygen demand levels in chemically enhanced primary treatment effluent

    The response trends of biochemical oxygen demand (BOD) and organic strength after the chlorination/dechlorination process were explored through a 2-year, 5-month chemically enhanced primary treatment (CEPT) effluent onsite monitoring program and a 2-month laboratory-scale study. The monitoring results showed that better instantaneous mixing at the chlorine injection point reduced the effect of ...


    By IWA Publishing

  • Near-infrared spectroscopic assessment of contamination level of sewage

    We examined the use of near infrared (NIR) spectroscopy as a rapid technique for the evaluation of sewage quality. Influent water samples, primary sedimentation tank water samples, and final effluent water samples were collected from sewage treatment facilities in Nagoya, Japan and their NIR spectra obtained. Partial least squares (PLS) models for total phosphate (TP), total nitrogen (TN), ...


    By IWA Publishing

  • What are the differences between Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD)?

    Ask the expert: What are the differences between Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD)? Answer: Both COD and BOD test methods aim to give an indication of the amount of pollution in a water sample. COD is the amount of oxygen required to chemically breakdown the pollutants whereas BOD is the amount of oxygen ...


    By Camlab Limited

  • Marine Sciences Investigations in Support of Level Oftreatment Decisions for Municipal Wastewater Discharges in Puerto Rico

    ABSTRACT The Puerto Rico Aqueduct and Sewer Authority (PRASA) currently has National Pollutant Discharge Elimination System (NPDES) permits that incorporate relaxation (waiver) of BOD and TSS secondary treatment requirements for six of its regional wastewater treatment plants. The waivers are available under Section 301(h) of the Clean Water Act. Maintaining the waivers requires, in part, ...

  • Level and transport pattern of faecal coliform bacteria from tropical urban catchments

    Urbanization and frequent storms play important roles in increasing faecal bacteria pollution, especially for tropical urban catchments. However, only little information on the faecal bacteria levels from different land use types and the factors that influence bacteria concentrations is available. Thus, the objectives of this study were to quantify the levels and transport mechanism of faecal ...


    By IWA Publishing

  • Results of trials to remove BOD/COD from effluent arising from cellulosic fibre production case study

    A man-made natural fibre producer had produced a new high strength, fibrillated cellulosic fibre derived from wood pulp destined for use in garment manufacture. As a result of the IPC authorisation attached to the production of this product it became necessary to establish the biodegradability of various effluent streams leaving the production plant. In order to evaluate the feasibility of ...


    By Cleveland Biotech Ltd.

  • Results of trials to remove BOD/COD from effluent arising from cellulosic fibre production case study

    A man-made natural fibre producer had produced a new high strength, fibrillated cellulosic fibre derived from wood pulp destined for use in garment manufacture. As a result of the IPC authorisation attached to the production of this product it became necessary to establish the biodegradability of various effluent streams leaving the production plant. In order to evaluate the feasibility of ...


    By Cleveland Biotech Ltd.

  • Pushing Water Reuse to The Extremes

    Large-scale water-reuse treatment plants have had a sustainable impact in populated areas where the volume of water to be treated and reused in a concentrated area makes them practical. Today, the flat-sheet membrane aerated biofilm reactor (MABR) technology that is delivering high-quality wastewater treatment to remote locations is poised to realize the promise of sustainable water reuse in ...


    By Fluence Corporation

  • Relationship between land use and water quality in a small watershed in South Korea

    Recent research and monitoring undertaken by various institutions have emphasized measurements of river-water quality. Based on the results, government agencies have set guidelines to improve river-water quality management. However, the relationship between water quality and land use/land cover (LULC) has not been examined closely in South Korea to date. This study investigated this relationship ...


    By IWA Publishing

  • Biologically Engineered Biofilm Modifications for the Enhancement of Collection System Transformations and Impacts on BNR Wastewater Treatment

    ABSTRACTIncreased influent RBCOD and heterotrophic plate counts coincided with the start of bioaugmentation in this study. Observed influent sulfide levels were also lower duringbioaugmentation. RBCOD increases could potentially improve biological phosphorus or nitrogen removal. Lowered sulfides in the influent could lower corrosion and odors in the collection system ...

  • A country public house in the North of England case study

    A Public House had a new treatment plant installed in order to comply with the new discharge consent levels for BOD imposed by the River Authorities. A few months after the plant was commissioned the National Rivers Authority took samples and reported that the discharge was far above the BOD consent level by a factor of ten. The contractors were contacted and they recommended that wastes such as ...


    By Cleveland Biotech Ltd.

  • Performance of a constructed wetland for treating farm-yard dirty water

    Constructed wetlands (CWs) have been used to treat agricultural effluents with varying success especially with respect to their operational efficiency in winter and ability to retain phosphorus. Dirty water (DW) from dairy farms is a mixture of manure contaminated runoff and milk parlour washings with a highly polluting biochemical oxygen demand (BOD) ≤3,000 mg/L. The initial performance a CW of ...


    By IWA Publishing

  • Northwest’s Hood River Juice Company Hood River, OR case study

    The Problem: Hood River Juice was building a new process facility and needed to construct a wastewater treatment plant to meet their surcharge requirements for BOD and TSS. The goals and objectives were to minimize operator attention and achieve results that were sustainable. The Solution: BioprocessH2O provided a bioFAS Mobilized ...


    By BioprocessH2O

  • 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.

  • Tomato Processor Pilot Bioreactor

    98% Average Reduction in BOD & TSS A tomato processing facility was required by the city to reduce BOD from 4,000 ppm to 200 ppm. Integrated Engineers proposed a small scale Bioreactor to prove the effectiveness of the activated sludge process on the customer’s wastewater as well as establishing the parameters for a full scale system design. The trailer mounted ...


    By Integrated Engineers Inc.

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