process water Articles
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Modular treatment system neutralizes process water
A self-contained pH control and monitoring sys- tem for ready mixed operations yields clean water for recycling or permitted discharge to the environment. Fortrans' Model 5000S uses car- bon dioxide gas to neutralize high-pH process water, offering precise alkalinity monitoring and control of water in pits, settling basins and other containment areas, as it lowers total suspended solids. ...
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Reducing water consumption in industry through flow analysis and simulation: a case study from India
Increasing water shortages in some countries is forcing the industrial enterprises to secure their own supply of process water. Reducing water consumption and closing water cycles is essential in order to safeguard industrial water supply. The various ways of implementing water saving measures in a company can be highlighted via a status-quo analysis involving a simulation of the actual ...
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Validation of the STRIVE model for coupling ecological processes and surface water flow
The 1D model package STRIVE is verified for simulating the interaction between ecological processes and surface water flow. The model is general and can be adapted and further developed according to the research question. The hydraulic module, based on the Saint-Venant equations, is the core part. The presence of macrophytes influences the water quality and the discharge due to the flow ...
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Process intensification in wastewater treatment: oxygen transfer characterisation of a jet loop reactor for aerobic biological wastewater treatment
The overall volumetric mass transfer coefficient (KLa) and the overall gas holdup (ε) were measured in a jet loop reactor (JLR) used for the intensive aerobic biological treatment of waste water. The process parameters and their ranges were: inlet water flow rate: 30 &#le; QL &#le; 70 l/min, inlet air flow rate: 4 &#le; Qg &#le; 36 l/min. The ratio of water flow rates from ...
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Flow measurements in sewers based on image analysis: automatic flow velocity algorithm
Discharges of combined sewer overflows (CSOs) and stormwater are recognized as an important source of environmental contamination. However, the harsh sewer environment and particular hydraulic conditions during rain events reduce the reliability of traditional flow measurement probes. An in situ system for sewer water flow monitoring based on video images was evaluated. Algorithms to determine ...
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Sea Water Desalination - Technical Article
Sea Water Desalination is a specific process involving molecular separation via membrane technology to reduce the dissolved salt and mineral content of sea water to a level suitable for human and animal consumption, commercial/industrial and irrigation uses. This process involves three water streams namely sea water as the intake source, Product / Permeate water of potable drinking water quality ...
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Designing Pollution Prevention into the Process
Consider the following recent examples of pollution prevention in chemical process plants: An Adiponitrile plant in Orange, Texas installed an inexpensive solenoid valve on the line supplying process water to flush the seals of process pumps used in intermittent service. The solenoid, which is connected to the pump control system, shuts off flush water when the pumps are not running. As a ...
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Surfactant-induced unsaturated flow: Instrumented horizontal flow experiment and hysteretic modeling
Organic compounds with surface-active properties reduce the surface tension of water and can change soil water contact angles depending on their aqueous concentration. The presence of such compounds in the unsaturated zone affects soil moisture characteristics and unsaturated hydraulic conductivity relations, and can cause flow as a result of induced soil water pressure gradients. Some studies ...
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Closed Circuit Coolers: Design with winter in mind
When outside temperatures fall below freezing, water inevitably forms into ice. Open cooling towers can be susceptible to freezing due to their inherent nature of operation. As a result, ice formation becomes a subject of management, not elimination. Fortunately, there are alternative solutions. Closed circuit coolers are used for a multitude of niche applications, but are ideal for evaporative ...
By Evapco Inc.
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The Generation of Pure Water
As a world leading manufacturer of complex multi-port stainless steel diaphragm valves, GEMÜ has earned an excellent reputation in the biotech and pharmaceuticals’ markets. GEMÜ is now transferring the skills acquired in biotech and pharmaceutical applications, to water applications by designing and manufacturing plastic multi-port block valves. The space saving compact build, ...
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Development and testing of the HYPE (Hydrological Predictions for the Environment) water quality model for different spatial scales
The HYPE model is a hydrological model for small-scale and large-scale assessments of water resources and water quality, developed at the Swedish Meteorological and Hydrological Institute during 2005–2007. In the model, the landscape is divided into classes according to soil type, land use and altitude. In agricultural lands the soil is divided into three layers, each with individual computations ...
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Pulsar Measurement Flow Meters in Fresh Water Quarry
Based in Watsonville, California, Graniterock is an American corporation that operates in the construction industry providing crushed gravel, sand, concrete, and asphalt paving services. Their Aromas, California location is home to their Aromas Technical Research Services. The location provides statistical process control reports and monitoring of their various branch locations; one of which is ...
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Ozone dosage calculation for water treatment
Water treatment is a critical process that safeguards the safety and quality of our water supply. One of the most effective methods for water treatment is ozone treatment, known for its remarkable ability to disinfect and purify water efficiently. However, harnessing the full potential of ozone in water treatment requires precise ...
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Water Flow Monitoring Helps Avoid Costly Fines
Water Distribution Company Refines Pumping System Many water distribution companies use a similar process for Water Flow Monitoring: Collect water from a well with the help of water pumps, utilize a pond or reservoir to temporarily store the water and maintain a loading center to fill water trucks for transport. The problem is how to pump the maximum allowable volume of water on a day-to-day ...
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Standardised UV disinfection skid packages for offshore potable water treatment - Case Study
In response to the DWI guidance, atg UV Technology have developed a range of standardised UV skid package solutions, specifically designed for the quick and easy replacement of non-conforming UV equipment. The process of disinfecting water with UV light is a proven technology, and has been widely used throughout the offshore petrochemical sector for crew drinking water supplies for over 30 ...
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Japanese metal powder manufacturer relies on U.S. Rotary Batch Mixer
Nippon Atomized Metal Powders Corporation uses a patented water-jet atomization process to make high-quality super-fine metal powders from copper, bronze, brass, silver, gold, and stainless steel that are of consistent composition and particle size. Nippon Atomized Metal Powders refined the process of water-jet atomization to produce metal powders with well-shaped, uniform particles in the range ...
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Climate Change and Water Issues
Water supplies are being threatened by climate change, endangering food and energy supplies as well Any discussion of climate change and water issues runs the risk of creating an artificial distinction between many fundamentally intertwined forces, with water as just one facet of a complex set of challenges. Because climate change interacts not just with water security but also with energy and ...
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Flow measurement challenges and solutions
Water is utilized for multiple purposes — cooling, process applications, service water — at many industrial plants. Accurately measuring flow rates in various process streams is critical to ensure proper equipment operation and to maximize plant efficiency. However, such measurements are often very challenging. This article outlines several examples from the power industry, and ...
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How to avoid system downtime when installing flow meters
FPI Mag installed in pipe. Water and wastewater utilities rely on accurate flow measurement for important process controls. These may include recycle streams, chemical dosing systems, and other operational functions. In addition, regulators require utilities to measure certain flows, such as treatment plant influent and effluent and potable water pumping. Accurate flow measurement is also ...
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Validation of Salt Water Disposal Well Treatment Plants with Handheld Oil in Water Sample Analyzer
Salt Water Disposal (SWD) well operators often dispose a substantial volume of oil inadvertently when injecting salt water, thereby losing the opportunity to sell the oil on the market and potentially reducing the ability to inject water in the well. Injection facilities are typically operated with minimal instrumentation or system optimization, which means the operators don't know how much, or ...
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