water conditioning Articles

  • Diseases That Biological Water Treatment Can Prevent

    Biological water treatment is essential because drinking contaminated water can cause illness. There are many types of contaminants, and the most common are human and animal feces, agricultural run-off, and chemicals. These contain pathogens, which cause water-borne diseases. These pathogens can quickly spread via different methods. Here are some of the most common diseases that can be ...

  • Innovation and efficiency at the forefront of long-standing partnership

    Wiltshire-based Malaby Biogas operates one of the few independent anaerobic digestion (AD) plants in the UK, specialising in the diversion of food waste from landfill. Its Bore Hill Farm Biodigester provides a combined waste disposal and energy generation solution in one safe, clean and highly-efficient process and the facility has gained a wide-ranging ...


    By Geotech

  • Pumping Wastewater into Existing Pressure Sewer

    Romtec Utilities designs, manufactures, and supplies pumping systems for many different applications. Our systems include all structural, all mechanical, all electrical, and all communications systems in a single purchase. Many of our systems are designed and supplied to handle sewage and wastewater flows in a lift station design. In many scenarios, these lift stations ...


    By Romtec Utilities Inc.

  • The Water Conditions in Ethiopia, Part Two

    While in Ethiopia in August to learn more about what they do about drinking water, I visited the Debre Damo Monastery. About 1,600 years old, it is situated on a flat-topped outcropping of solid rock. The only way in or out is by climbing a sheer cliff using a 15 meter rope made from woven rawhide. The top supports a community of about 150 monks. Certainly the most extreme location I found people ...


  • Structural conditions in German water supply

    Against the background of price controls for drinking water supply utilities in Germany, the comparability of utilities with regard to their specific structural conditions comes into focus. Relevant structural conditions were identified for the two main technical processes, namely water production (WP) and treatment, storage and distribution (TSD). A defined clustering process for comparable ...


    By IWA Publishing

  • The Water Conditions in Ethiopia, Part One

    In August, I was able to visit northern Ethiopia to look at some of the drinking water issues. As you might guess, there are many, ranging from polluted water to almost no water at all. That made it interesting to discover the inhabitants of Adwa and Aksum rely on a reservoir. The reservoir water is treated first by aeration to oxidize iron, then with a flocculant which attracts dirt like a ...


  • High groundwater site conditions

    Specific site conditions: BIOROCK non-electrical sewage treatment plants are unlike other wastewater treatment systems and are perfectly suitable for high groundwater conditions. BIOROCK plants can be installed in high water table or high groundwater sites by one of our trained installers. Our Research and Development team worked hard to find the best design to fit to difficult UK installation ...


    By BIOROCK S.à.r.l

  • Asset condition estimation and depreciation

    Vitens is one of three water companies in The Netherlands, with 2.3 million connections, 5.4 million customers, 47,5000km of pipes and 96 treatment works that provide 330M.m3 a year of potable water at a cost of €1.32/m3 ($1.72/m3). Each day the company receives calls from customers reporting leaks. The maintenance division provides information on the pipe material and diameter, and the business ...


    By Innovyze

  • The Benefits of Biogas Conditioning

    Abstract Anaerobic digestion is quickly becoming the choice technology for sewage sludge treatment at wastewater treatment plants, as the methane rich biogas produced is a valuable resource which can be used to generate electricity. In the oxygen restricted environment, a natural by-product of the anaerobic process is hydrogen sulfide, a harmful contaminant. Also present in the biogas are ...


    By Biorem Technologies Inc.

  • Developing Reference Conditions For Phytoplankton in The Baltic Coastal Waters

    For the implementation of the Water Framework Directive reference conditions have to be established for the various quality element. In this report we outline a number of approaches that can be pursued for establishing reference conditions for phytoplankton at a regional level and discuss the problems associated with their application. This report does not exhaust the topic of establishing ...


  • Total Dynamics of Quartz–Water System at Ambient Conditions

    New data on the dissolution and growth of quartz in acid, nearly neutral and slightly alkaline solutions at ambient conditions are presented. During batch dissolutions, aqueous Si-concentrations increased nonlinearly towards limit values. During parallel growth experiments, however, the high Si-concentrations corresponding to 13-fold supersaturation with respect to quartz did not decreased. To ...


    By Springer

  • Valves in Water System of Heating Air Condition

    Common valves in water system of heating air condition include gate valve, globe valve and butterfly valve.   Gate vale For its moderate length, rotary adjusting rod and good regulating performance, gate valve is widely utilized in large caliber pipes.   Globe valve Globe valve is suitable for small caliber pipes for its long length, ...

  • Effect of different water conditions on dissolution of nanosilver

    This study evaluates the time-dependent dissolution of nanosilver (nAg) in common electrolytes and natural waters. nAg was synthesized via Tollens’ method using sodium citrate as stabilizer; its morphology, UV–Vis spectrum, and particle size were characterized. The dissolved silver was monitored over time using filtration, centrifugation, and inductively coupled plasma atomic ...


    By IWA Publishing

  • Water supply in Jordan under drought conditions

    This paper discusses the Mujib Dam reservoir's storage during the drought years of 2007–2009. It has been concluded that the policy of unplanned water release during the dry year 2007, when little attention was paid to the possibility of a continuation of the drought, contributed to the remarkable lack of surface water storage during 2008, another dry year. For better management and planning, ...


    By IWA Publishing

  • Improved oxygen conditions in the Baltic deep water

    Oxygen conditions in the south eastern Baltic have improved thanks to an inflow of oxygen-rich water from the North Sea during November/December 2011. This inflow has also caused the concentrations of phosphate and silicate to increase in the surface waters, which could cause excessive algal blooms this summer. As a result of the relatively large inflow from the Kattegat to the Baltic ...

  • Air Conditioning That`s Out of This World

    New materials enhance the cooling effects from outer space to reduce energy use in small- to medium-sized buildings Reducing air conditioning energy use by using new materials to enhance the cooling effects from outer space may not be such a far-out idea. In a simulation study using DOE's Energy Plus software and ...


    By US Department of Energy

  • Securing safe drinking water supply under climate change conditions

    Water suppliers worldwide are challenged by climate variations, but so far only the qualitative change in boundary conditions has become clear but not yet the degree and impact on the water supply systems. Short-term quality changes in surface waters can, e.g. be caused by extreme rainfalls after dry periods. Longer heat periods without rain can induce middle-term quality changes in surface ...


    By IWA Publishing

  • Water sector performance under scarcity conditions: a case study of Rajasthan, India

    This paper makes an attempt to assess the water sector under scarcity conditions in the State of Rajasthan. It adopts the criteria of physical, economic, financial and equity performance across sub-sectors. The assessment brought out clearly that no indicator has shown satisfactory performance in any of the sub-sectors. Though the urban drinking water sector is relatively better in performance, a ...


    By IWA Publishing

  • Evaluation of chlorine decay models under transient conditions in a water distribution system

    Residual chlorine concentration decreases along distribution networks because of factors such as water quality, physical properties of the pipeline, and hydraulic conditions. Hydraulic conditions are primarily governed by transient events generated by valve modulation or pumping action. We investigate the impact of transient events on the rate of chlorine decay under various flow conditions. ...


    By IWA Publishing

  • The influence of reaction conditions in the oxidation of organic compounds of nuclear laundry water by ozone

    This paper presents a summary of degrading organic compounds of nuclear laundry water by ozonation in different conditions of pH, hydrogen peroxide and ultraviolet radiation. The degradation of organic compounds was analysed by chemical oxygen demand (COD), total organic carbon (TOC) and biochemical oxygen demand (BOD). The optimal degradation conditions were at pH 7 with ozone, UV radiation and ...


    By IWA Publishing

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