pond dissolved oxygen Articles

  • 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

  • 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 odors from the ...


    By Integrated Engineers Inc.

  • Case study - California vineyard improves sludge movement with aeration

    Overview A California vineyard was faced with the challenge of meeting wastewater treatmentcompliance under a tight deadline defined by local regulators, while receiving ongoingodor complaints from the community. Challenges Extended periods of mismanagement from previous owners left the facility and the wastewater treatment system in disarray. ...

  • 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.

  • Is Water RunOff Effecting my Pond?

    What is Water RunOff? Runoff is precipitation that did not get (infiltrated) absorbed into the soil, or did not evaporate, and therefore made its way from the ground surface into places that water collect. Runoff causes erosion, and also carry chemicals and substances on the ground surface along to the ponds, lakes and rivers where the water ends up. ( ...


    By Keeton Industries, Inc.

  • Analysis of nitrogenous and algal oxygen demand in effluent from a system of aerated lagoons followed by polishing pond

    In this descriptive-analytical study, nitrogenous and algal oxygen demand were assessed for effluent from a system of facultative partially mixed lagoons followed by the polishing pond using 120 grab samples over 1 year. Filtered and non-filtered samples of polishing pond effluent were tested in the presence and absence of a nitrification inhibitor. Effective factors, including 5-day biochemical ...


    By IWA Publishing

  • Thermal stratification - Destroyer of healthy pond and lake ecosystems

    IT is early spring in a small reservoir which supports an exclusive condominium and golf coursa development. At and near the surface of the pond, in the layer called th: epilimnion, microscopic plants and animals (phytoplarikt< in and zaoplankton) feed on each other and are fed on in turn by small fish and other animals. Wind and wave action at the surface causes oxygen from the air to be ...


    By EP Aeration

  • Aquatic environment of the ponds in coastal India in relation to fish culture

    The status of aquatic environmental parameters like dissolved oxygen, pH, temperature, salinity and alkalinity etc. were examined in the six ponds located at Khar Land Research Station Farm at coastal district Raigad, Maharashtra, India in relation to fish culture. The study was conducted for two years 2005-2006 and 2007-2008. In the first year, the dissolved oxygen ranged from 4.95 mg/l to 5.75 ...


    By Inderscience Publishers

  • A review of the factors affecting sunlight inactivation of micro-organisms in waste stabilisation ponds: preliminary results for enterococci

    Waste stabilisation ponds (WSP) are efficient, cost-effective methods of treating wastewater in rural and remote communities in Australia. It is recognised that sunlight plays a significant role in their disinfection, however, due to the poor penetration of light in turbid waters it has been hypothesised that other mechanisms may also contribute to disinfection in WSPs. To date, studies have ...


    By IWA Publishing

  • The effect of aeration and effluent recycling on domestic wastewater treatment in a pilot-plant system of duckweed ponds

    Three pilot-scale duckweed pond (DP) wastewater treatment systems were designed and operated to examine the effect of aeration and effluent recycling on treatment efficiency. Each system consisted of two DPs in series fed by pre-settled domestic sewage. The first system (duckweed+ conventional treatment) was ‘natural’ and included only duckweed plants. The second system ...


    By IWA Publishing

  • Removal kinetic of Escherichia coli and enterococci in a laboratory pilot scale wastewater maturation pond

    During the last 15 years several authors studied the disinfection in waste stabilisation pond (WSP) and several empirical models were developed. There are huge differences between the models describing this process and there is really a need to improve the design of ponds for better disinfection. This paper addresses the Escherichia coli and enterococci disinfection in a laboratory pilot ...


    By IWA Publishing

  • Case Study: Garlic Processor

    Utilizing Bio System’s Microbes and Aeromix Systems to develop a stable biomass and eliminate odors from a food processing pond.A California garlic processor had a persistent odor problem with their wastewater pond and had been under increased scrutiny from the Regional Water Quality Control Board (RWQCB) as well as the Air District to reduce the pond odors. The odors emanating from this pond ...


    By Integrated Engineers Inc.

  • Stormwater nitrogen removal performance of a floating treatment wetland

    The nitrogen (N) removal efficiency and effluent quality of two parallel stormwater retention ponds, one retrofitted with a floating treatment wetland (FTW) and one without any vegetation, was compared in a field trial. This study shows that inclusion of FTWs in stormwater retention ponds has potential to moderately improve N removal. Median FTW outlet event mean concentrations (EMCs) were lower ...


    By IWA Publishing

  • Solar septic tank aeration

    Bacteria are what enable wastewater to be treated and safely disposed off. This applies to home septic systems as well as municipal sewage treatment plants. The treatment difference between the two systems is the amounts of bacteria involved. A home septic system uses the same three types of bacteria aerobic, facultative, and obligate anaerobic. Aerobic bacteria require oxygen induced ...


    By Pennington Equipment Company

  • Prevent Fish Kill in the Spring

    Pond Deicing Can Help Prevent Fish Kill Keeping the pond open will help keep oxygen in the water, attract water fowl and help prevent fish kills in the spring. The most common cause of fish kills is suffocation due to lack of dissolved oxygen. Most dissolved oxygen is produced by algae and aquatic plants through photosynthesis. A lesser but also important source of oxygen in water ...


    By Keeton Industries, Inc.

  • Poultry slaughterhouse wastewater treatment plant for high quality effluent

    This paper assesses a wastewater treatment plant (WWTP) regarding the technology used, as well as organic matter and nutrient removal efficiencies aiming to optimize the treatment processes involved and wastewater reclamation. The WWTP consists of a dissolved air flotation (DAF) system, an upflow anaerobic sludge blanket (UASB) reactor, an aerated-facultative pond (AFP) and a chemical-DAF ...


    By IWA Publishing

  • Relationship between water quality parameters and the survival of indicator microorganisms – Escherichia coli – in a stormwater wetland

    Indicator microorganisms – Escherichia coli – in a stormwater wetland controlling non-point source pollution in the Keum River basin was studied and the relationship between water quality parameters and the survival of E. coli was investigated by Pearson correlation analysis based on 16 sets of data collected on dry days. A significant seasonal variation of the ...


    By IWA Publishing

  • Use of biocatalysts to reduce hydrogen sulfide emissions from lagoons and landfills

    Emission of odors from ponds and lagoons occurs due to aerobic and anaerobic decomposition of organic solids to release hydrogen sulfide, ammonia, and other organic by-products.  Aerobic biodegradation occurs near the water-air interface, where diffusion of oxygen occurs, while anaerobic degradation prevails mainly near the bottom of the pond or lagoon, where there is low or no dissolved oxygen ...


    By PRD Tech, Inc.

  • Contaminant removal in septage treatment with vertical flow constructed wetlands operated under batch flow conditions

    Individual septic tanks are the most common means of on-site sanitation in Malaysia, but they result in a significant volume of septage. A two-staged vertical flow constructed wetlands (VFCWs) system for the treatment of septage was constructed and studied in Sarawak, Malaysia. Raw septage was treated in the first stage wetlands, and the resulting percolate was fed onto the second stage ...


    By IWA Publishing

  • A method for assessing the potential for confounding applied to ionic strength in Central Appalachian streams

    Causal relationships derived from field data are potentially confounded by variables that are correlated with both the cause and its effect. The present study presents a method for assessing the potential for confounding and applies it to the relationship between ionic strength and impairment of benthic invertebrate assemblages in central Appalachian streams. The method weighs all available ...


    By John Wiley & Sons, Ltd.

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