Aquaculture Water Treatment Articles

  • Canadian Aquaculture Industry: A Brief Outline

    Deep Trekker is closely involved with fish farms around the world providing a reliable and easy to use inspection solution for submerged aquaculture structures. We proudly offer farmers a tool that allows them to keep a closer eye on their operations and ensures that they are also able to enact early measures to keep their sites sustainable. The aquaculture industry is a cause of debate for many. ...


    By Deep Trekker Inc.

  • The most threatened ecosystem you’ve never heard of

    What covers up to 600,000 square kilometers (230,000 square miles) of Earth’s surface, provides benefits worth an estimated US$570 billion each year, and is rapidly being lost due to human activity? If you have not a clue, you’re far from alone. Scientists who study the underwater feature known as a seagrass meadow call it a “ ...


    By Ensia

  • Water Preservation: What YOU Can Do

    If you’re presently reading this blog, you probably truly appreciate and understand something in which we all have a passionate interest. Water! We rely on water for hydration, irrigation, transportation, energy production, food production, weather patterns and so much more. Lakes, oceans, rivers and reservoirs across the Globe are part of the pillars that sustain life. If you are ...


    By Deep Trekker Inc.

  • Biological water treatment in aquaculture by means of “Mutag BioChip™ RAS Process“

    Aquaculture or fish farming means the artificial breeding and raising of aquatic creatures. They include fish as well as crustaceans and shellfish, which are raised and stocked under controlled conditions by using techniques and technologies offering an increased level of productivity which cannot be realized under natural conditions. Due to the increased demand for freshly caught fish and ...


    By Multi Umwelttechnologie AG

  • Model of an aquaponic system for minimised water, energy and nitrogen requirements

    Water and nutrient savings can be established by coupling water streams between interacting processes. Wastewater from production processes contains nutrients like nitrogen (N), which can and should be recycled in order to meet future regulatory discharge demands. Optimisation of interacting water systems is a complex task. An effective way of understanding, analysing and optimising such ...


    By IWA Publishing

  • Simulations of nutrient emissions from a net cage aquaculture system in a Brazilian bay

    Hydrodynamics and transport simulations were conducted with the modeling software TELEMAC-2D on Icó-Mandantes bay, a branch of the Itaparica reservoir. The bay has a maximal operational water level amplitude of 5 m and is suffering from eutrophication and algae bloom. Therefore, we investigated low and high water level scenarios with two different high resolution meshes, with the purpose to ...


    By IWA Publishing

  • The characteristics of immobilized granular sludge in the laboratory-scale stable partial nitrification-Anammox aquaculture water reactors

    Immobilized granular sludge is of key importance for highly effective operation of partial nitrification and anaerobic ammonium oxidation (PN-Anammox) reactors. An observation and analysis on the composition of immobilized granular sludge in each reactor was conducted by using scanning electron microscopy (SEM) and fluorescence in situ hybridization. It was indicated that the diversity of ...


    By IWA Publishing

  • Monitoring Ozone (in the air) in Hatchery & Fish Farm Ozone Injection Systems

    Hatcheries, fish farms and such in the aquaculture industry require clean water to maintain a high survival rate while rearing aquatic animals. Contaminated water increases the risk of infection which in turn can compromise production. A common way to disinfect water is by generating ozone on-site with an ozone generator, which is commonly inside an ozone generator room. For human safety, ...

  • Aquaculture induced erosion of tropical coastlines throws coastal communities back into poverty

    Shallow tropical coastlines harbour unique mangrove ecosystems, which support livelihoods and provide a natural barrier against coastal flooding. Non-sustainable land-use practices, such as large-scale clear cutting of mangroves for aquaculture, ground water withdrawal and alteration of river flows, result in rapid subsidence. The collapse of aquaculture production, due to pollution and disease, ...


    By Wetlands International

  • Evaluating alternatives for decommissioning California's offshore oil and gas platforms

    This paper introduces a series of six additional papers in this issue that describe an in‐depth analysis of options for decommissioning oil and gas platforms offshore southern California. While current leases require lessees in both state and federal waters to completely remove all production facilities and restore the seafloor to its pre‐platform condition, other options have emerged since ...


    By John Wiley & Sons, Ltd.

  • Measurement of the amount of DissolvedOxygen

    Dissolved Oxygen (DO) is the term used for the measurement of the amount of oxygen dissolved in a unit volume of water. In water quality applications, such as aquaculture (including fish farming) and waste water treatment, the level of DO must be kept high. For aquaculture if the DO level falls too low the fish will suffocate. In sewage treatment, bacteria decompose the solids. If the DO ...


    By Delta OHM S.r.L.

  • Carbon footprint of aquaculture in eastern India

    The present study was conducted to determine the carbon (C) footprint of different aquaculture production systems in India. The total input (kg CE/ha) in different cultures, respectively, was 1,811 to 4,144 for scampi, 4,417 to 5,913 for polyculture, 4,090 to 8,873 for shrimp and 2,417 to 2,786 for carp. Of the total inputs, feed accounts for around 90% of carbon equivalent (CE), in all ...


    By IWA Publishing

  • Utilization of inland saline water for Spirulina cultivation

    An attempt was made to assess the suitability of the inland saline water of Rohtak (Haryana) for mass cultivation of Spirulina platensis, a salt loving cyanobacterium. Cultivation of S. platensis was performed in indoor and outdoor culture units. The investigation revealed that the yield of biomass in de-calcified inland saline water was comparable to the yield obtained in ...


    By IWA Publishing

  • Managerial response to sea level rise in the tidal estuaries of the Indian Sundarbans: a geomorphological approach

    Tidal estuaries constrained by embankments in the Sundarbans have failed to respond to a >1 m sea level rise over the past 100 years since their construction. This paper shows that this has led to a disequilibrium morphology leading to channel erosion that has undermined embankments, causing mass failure, breaching and subsequent flooding during surge events. Predicted future sea level ...


    By IWA Publishing

  • Phosphatase activity and specific methanogenic activity in an anaerobic reactor treating sludge from a brackish recirculation aquaculture system

    Anaerobic treatment of high salinity sludge from marine/brackish recirculation aquaculture systems is potentially limited by inhibition of enzymatic activities and cell lysis resulting from high osmotic pressures. To further address these limitations the following investigations were conducted: effect of salinity on phosphatase activity (PA), soluble microbial products (SMP) production, and ...


    By IWA Publishing

  • Performance of an in-situ rotating biological contactor in a recirculating aquaculture system

    The start-up and activation of a nitrifying rotating biological contactor (RBC) and its performance inside a culture tank of rainbow trout were studied. First, in a lab-scale operation, the system was fed with a synthetic medium containing a high ammonia concentration (567 mg NH4+-N L−1) and operated at a high hydraulic retention time (HRT) (6.5 days) to minimize the wash-out of the biomass and ...


    By IWA Publishing

  • Viability of Ascaris and other helminth genera non larval eggs in different conditions of temperature, lime (pH) and humidity

    Helminth eggs are the pathogens most resistant to inactivation during sludge and wastewater treatment. For this reason, in several regulations and the WHO guidelines for wastewater and excreta reuse for agriculture and aquaculture they are considered as indicators of the performance of the treatment process. Conditions required to inactivate helminth eggs, notably Ascaris lumbricoides, are ...


    By IWA Publishing

  • Protecting ireland’s aquaculture

    Background Mulroy Bay in North West Ireland is a pristine marine environment with a number of rare and sensitive habitats. As a result Mulroy Bay is designated as a Special Area of Conservation under the EU Habitats Directive (92/43/EEC). The sheltered nature of the bay has seen it develop into a major centre for aquaculture producing shellfish and salmon with an annual value of ...

  • Pilot scale testing of advanced oxidation processes for degradation of geosmin and MIB in recirculated aquaculture

    The presence of geosmin and 2-methylisoborneol (MIB) in recirculated aquaculture systems has a significant negative impact on the fish production due to poor flavour quality of produced fish and increased risk of rejection by fish processers. Advanced Oxidation Processes has a high potential for removal of geosmin and MIB in water and in this study UV/H2O2 and UV/O3 has been tested in pilot scale ...


    By IWA Publishing

  • Fish farming at Kontiolahti

    At Kontiolahti Fish farm the cuttings of salmon, trout and rainbow trout are cultivated to juveniles. Spawn is hatched and the juveniles of 0+ age-class are farmed inside. The older juveniles are farmed outside in surface basins. The water flow is 100-170 l/s depending on the season. Situation in the beginning The oxygen rate of the becoming water to the farm was not enough time to time, ...


    By W-Rix Ltd

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you