Showing results for: point-of-use system Articles
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Advantages of Using Flow Meters to Reduce Pressure Drop
Plant operators rely on plant air pressures to maintain properly working equipment and systems. One of the most common problems affecting processing plants that utilize compressed air systems is the ability to maintain reliable air pressure throughout the distribution system. Insufficient air pressures may be due to undersized distribution piping, but it’s more commonly found that the cause ...
By FLO-CORP
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Parameter plane synthesis of modified self commutating CSI-fed induction motor drive
The paper presents a new technique for the design of current and speed controller parameters of a modified CSI-fed induction motor drive for stable operation. The mathematical model of the induction motor drive is developed in closed loop and the characteristic equations of the system are derived using perturbation about operating point. D-partition technique is used to determine the stable ...
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Uncovering chemical quality improvements through a holistic approach to chemical quality management
Abstract This paper focuses on a holistic approach to monitoring particles in ultra-pure chemicals from supplier all the way to the wafer surface. As critical dimensions shrink, this understanding will become very critical for cleaning equipment, processes, and the chemical delivery systems that supply them. Advancing technology in particle monitoring capabilities have made it possible to measure ...
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Development and evaluation of a small scale water disinfection system
Provision of microbiologically safe drinking water for people living in the rural areas of developing countries remains a major challenge to date. A simple gravity-driven membrane point of use system was developed based on woven fabric microfiltration (WFMF) membranes. The WFMF is a loose type of membrane (0.45 μm). However, complete disinfection is not achieved with the WFMF, hence it was ...
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Industrial Wireless Networks & the Mobile User
Factory floors provide a wealth of information around the clock – the number of components manufactured at an auto plant, the amount of dough mixed at an industrial bakery, the status of every piece of equipment on the floor. Traditionally, all this information is channeled via computer systems to one fixed location in an operations office. But manufacturers are increasingly seeing value ...
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The 5 Benefits of Professional Arsenic Removal from Water
It is a sad and scary truth, but many homes have arsenic in their water systems. High levels of arsenic can be dangerous to you, your family, your pets, and the property you inhabit. Do not panic, though. Simply research an arsenic filtration system. There are many advanced methods that can be used to remove arsenic from water. Arsenic in water removal is completely affordable and safe. Below ...
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Vibration testing of a carbon composite fuselage
This paper describes the details of an experimental investigation focusing on the vibration characteristics of a composite fuselage structure of an ultralight unmanned aerial vehicle (UAV). The UAV has a total empty weight of 70.3 kg and 6.3 m in length. The fuselage structure consists of the fuselage body with an integrated vertical stabiliser. All structural components are fabricated from ...
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Comparative analysis of two low cost point-of-use water treatment systems
The study examined two low-cost point-of-use water treatment systems developed in respect of bacterial and particulate removal when exposed to surface water for three months. Bacterial removal efficiency was estimated using E. coli and fecal coliforms, while particulate reduction efficiency was estimated by determining turbidity and total suspended solids (TSS). The systems investigated were ...
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Inactivation of rotavirus in water by copper pot
The objective of this study was to evaluate the use of copper pots for inactivation of rotavirus present in water. Distilled water was inoculated with rotavirus (2.2 × 107 plaque-forming units (PFU)/mL) and stored overnight (16 hours) at room temperature in copper pots (test) and in glass bottles (controls). The viable count of infectious virus was tested using a plaque assay on MA 104 monkey ...
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Socio-economic factors influencing the spread of drinking water diseases in rural Africa: case study of Bondo sub-county, Kenya
Socio-economic and medical information on Bondo sub-county community was studied to help establish the relationship between the water quality challenges, community health and water rights conditions. Health challenges have been linked to water quality and household income. A total of 1,510 households/respondents were studied by means of a questionnaire. About 69% of the households have ...
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Household survey of installation and treatment efficiency of point-of-use water treatment systems in Hanoi, Vietnam
Since urban water supply is not yet available for every inhabitant in Hanoi City, numerous residents look for alternative sources such as groundwater and rainwater to compensate the supply shortage. However, in parts of Hanoi, it was reported that groundwater is polluted by various contaminants including arsenic (As) and ammonia (NH4-N). Therefore, numerous types of point-of-use (POU) water ...
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Drinking water standard revision catches up with UV-LED
New criteria for microbial reduction An international standard on drinking water treatment has been updated following developments and the roll-out of UV-LED (ultraviolet-light emitting diode) technology. NSF International, the body accredited by the American National Standards Institute (ANSI), has established new criteria for the use of UV-LED technology for microbial reduction. The standard ...
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Critical parameters in the production of ceramic pot filters for household water treatment in developing countries
The need to improve the access to safe water is generally recognized for the benefit of public health in developing countries. This study's objective was to identify critical parameters which are essential for improving the performance of ceramic pot filters (CPFs) as a point-of-use water treatment system. Defining critical production parameters was also relevant to confirm that CPFs ...
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Optimized Molecular Contamination Monitoring for Lithography
Abstract A new approach to monitoring molecular contamination in lithography is presented. Recent technical advances have made it feasible to perform continuous real-time monitoring with significant advances in sensitivity and stability while minimizing sample tubing effects. These improvements are realized by using a small, low-cost monitor that is dedicated to monitoring a single location. ...
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What You Should Know about Arsenic Treatments
The nutrients that you put into your body directly impact your health. If you consume water with harmful substances, bacteria, or metalloids, it could create serious issues. While not a metal, arsenic is considered a metalloid because it contains many of the same properties as metallic elements. Typically found in soil, arsenic is harmful when ingested. Unfortunately, many Americans unknowingly ...
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SL20 USV Conducts Topographic Survey To A River Section - Case Study
Date: April 16, 2019 Location: A River Section Near Youyi Bridge in Xiangyang City, Wuhan Facility: SL20 Autonomous Survey USV River condition: Relatively strong wind, waves over 10cm high, with ships passing by. Mission: Utilize the SL20 USV to survey the underwater topography and section of this river sector systematically to generate a three-dimensional coordinate system for later ...
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Activated Carbon: What it is, how it works
Untitled Document Summary: In the last decade public awareness and concern over the quality of drinking water has resulted in more and more consumers turning to point-of-use devices for treating water to their own desired level of quality. This is reflected in the market for home water filters, designed to remove objectionable tastes and odors and organic contaminants from ...
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Asahi/America Application Story – Water / Waste Treatment
The City of Valdosta, GA need to upgrade their Wastewater treatment plants Chemical & Scrubber Systems Their OLD LEAKING CAUSTIC SYSTEM was Piped in CPVC and painted Red color. The entire piping system from the Chemical Room to point of use was to be replaced due to multiple failures both above and below ground. The OLD CPVC carrier; clear PVC 'Clam Shell' containment D/C System had failed ...
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AMC Contamination-Caused Optical Haze Formation on Surfaces
In this installation of our lithography-focused blog series, we discuss haze formation in lithography applications, and how to mitigate it by monitoring for AMCs. Go here for our previous blog in this AMC Contamination monitoring ...
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Lighting the way for UV disinfection - Case study
Pharmaceuticals manufacturing involves the handling of powders and volatile, flammable solvents such as iso-propanol. Consequently there is every opportunity for explosive atmospheres to form. Pharmaceuticals manufacturing involves the handling of powders and volatile, flammable solvents such as iso-propanol. Consequently, there is every opportunity for explosive atmospheres to form. ...
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