filter test Articles
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How well does my filter work?
Contamination control is the key to a cost-effective maintenance operation for hydraulic or engine systems. You depend on your filters, whether hydraulic, lube or fuel, to keep your fluids clean, to keep maintenance costs down, and to ensure reliable operation. At some point, you probably will ask yourself whether or not your filters are really working and doing what they were designed to do. ...
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Diesel Particulate Filter Testing with Vehicle Data Acquisition
Delphin Expert Logger Vehicle Data Acquisition and Control System CAS DataLoggers recently provided the vehicle data acquisition solution for Twin-Tec, a German developer and manufacturer of environmentally friendly products and technologies for reducing exhaust emissions, including a wide range of diesel particulate filters and catalytic converters for automotive applications. TwinTec was ...
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Why Biosolids Dewatering is Important
Dewatering, seems like something that should be simple but can be incredibly complicated and, even expensive. Biosolids dewatering especially has concerns as the material is typically destined for landfill, and when sludge needs to be separated into liquid and solid forms for easy removal or storage. Using our service can make dewatering easy, affordable, even profitable. Here are a few more ...
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Phoenix Technologies - Green Machine solutions case study
Problem Phoenix Technologies of Bowling Green, OH is a leading PET plastic recycler who was spending approximately $120,000 annually on replacement air filters. The Solution Phoenix sent us filters for testing and were satisfied that the Green Machine will be a perfect solution to dramatically lowering replacement filter ...
By Diversitech
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Flue Gas Treatment/ Power Plant - Case Study
A power plant is using a wet scrubber system to treat flue gases. Sofi Filter treats the flue gas condensate coming from sand filter overflow before the liquid enters reverse osmosis system.Reverse osmosis is sensitive to even the finest solids, and the solids concentration limits, in this case particularly the aluminum and iron particles, have been set very low. Current maximum acceptedlevel is ...
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Efficacy of a ceramic siphon household water filter for removal of pathogenic microorganisms: lifespan volume test
Treatment of drinking water at the point of use (POU) has demonstrated health benefits for people who have access only to microbially contaminated drinking water. In this work, the ceramic siphon POU water filter was evaluated for its ability to reduce indicator microorganisms in test waters. During batch challenge tests, the filter reduced Escherichia coli in filtered water by 7 log10 ...
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Liquid System Component Testing
Components such as valves, pumps, filters, degas modules, etc. are common sources of particles in a fluid handling system. Valves are typically found in sample collection locations where a liquid sample will be evaluated for various contaminants, including particles. Continuous moving parts in a pump create particles through friction, chemical degradation and cavitation. Filter testing is ...
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Influence of nanoparticles on the polymer-conditioned dewatering of wastewater sludges
The effect of using small-scale, high surface area, nanoparticles to supplement polymer-conditioned wastewater sludge dewatering was investigated. Aerobically digested sludge and waste activated sludge sourced from the Hunter Valley, NSW, Australia, were tested with titanium dioxide nanoparticles. The sludge samples were dosed with the nanoparticles in an attempt to adsorb a component of the ...
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Radioiodine Collection Filter Efficiency Testing Program
The key elements of the F&J quality assurance program for the manufacture of TEDA impregnated charcoal and silver zeolite cartridges utilized in the collection of airborne radioactive iodine species in power plant atmospheres include the following: 1. Testing is performed on every batch of adsorbent material 2. Testing is performed at different flow rates in order to have representative ...
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Evaluating Athens Stock Exchange market efficiency: Is a mean-variance filter profitable?
The purpose of this paper is to investigate the weak form of market efficiency, based on the concept of mean-variance analysis. The investigation initiates with an appraisal of the prediction of future closing prices from past closing prices from a sample comprising the stock of 79 enterprises with large capitalisation listed in Athens Stock Exchange (ASE) for the period of 01/01/2002 to ...
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Southwest Research Institute® (SwRI®) Technical Report Summary; SwRI Project No. 08.16032.009, “Filter Cleanability Testing”
This Technical Report Summary presents an overview of laboratory testing conducted at SwRI to evaluate the performance of a Diversi-Tech Green Filter Cleaning Machine under controlled laboratory conditions. In particular, the objective was to measure if and by how much, if any, airflow resistance, efficiency, and dust capacity changed for a given number of dust loading/filter cleaning cycles, ...
By Diversitech
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What are the newest Annex 1 Single use Requirements and does the BioCapt Single use Impactor meet them?
The new EU GMP Annex 1 rev 12 states, regarding single use: Chapter 8 . Production and Specific Technologies Paragraph : Single use systems (SUS) Annex 1 rev Dec 2017 – (8.117): Single use systems (SUS) are those technologies used in manufacture of sterile medicinal products which are designed to replace reusable equipment. SUS are typically defined systems made up of components such as ...
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Equivalence of Air and Water Permeability Tests in Evaluating Engineering Fabrics
Permeability characteristics of civil engineering filter fabrics are currently evaluated by three types of tests: air permeability and falling-head and constant-head water permeability. Test procedures for the falling-head and constant-head water permeability tests are discussed, and results from these tests are correlated to air permeability results for filter fabrics. Several commercially ...
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How deep is your BAF? Evaluation of different bed depths for high rate biological denitrification filters with limit of technology pollutant removal
Downflow Denitrification Filters are tertiary water and waste water treatment systems that allow denitrification and suspended solids removal to occur in a single step and allow limit of technology pollutant removal. With more and more stringent nutrient removal regulations coming up, downflow denitrification filters have increasingly become the solution of choice for plants faced with the ...
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Using a 20 nm Particle Counter for Filter Cleanliness Testing
Particle Measuring Systems Filter Cleanliness Case Study When replacing particle filters as part of a regular maintenance schedule, keep in mind that the manufacturer’s filter rating may not correlate with the actual cleanliness of the filter. The real-world performance of particle filters can depend on filter type, manufacturer and even the length of operation. Older filters accumulate ...
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Help Your Spoils Pass the Paint Filter Liquid Test
One of the most important functions of a drilling fluid is to stabilize and maintain a borehole opening. Borehole stability in coarse soils starts with creating an impermeable barrier between the soil and the drilling fluid or slurry via the filter cake (or polymer gel membrane for non-rotary mud drilling such as foundation drilling). Then, positive hydrostatic pressure from having the hole full ...
By CETCO
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Assessment of the quality, effectiveness, and acceptability of ceramic water filters in Tanzania
Globally, approximately two billion people drink contaminated water. Use of household water treatment (HWT) methods, such as locally manufactured ceramic filters, reduces the diarrheal disease burden associated with unclean water. We evaluated the quality, effectiveness, and acceptability of ceramic filters in two communities in Arusha, Tanzania, by conducting: 1) baseline household surveys ...
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Application of hybrid Kalman filter for improving water level forecast
Numerical modeling is one of the popular means to simulate and forecast the state of oceanographic systems. However, it still suffers from some limitations, e.g., parameter uncertainties, simplification of model assumptions, and absence of data for proper boundary and initial conditions. This paper proposes a hybrid data assimilation scheme, which combines the Kalman filter (KF) with a ...
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Evaluation of electropositive filtration for recovering norovirus in water
The virus adsorption-elution (VIRADEL) technique has been widely used in the recovery of various enteric viruses in water, and an electropositive filter such as 1 MDS has been commonly applied. However, effective methods of monitoring waterborne norovirus (NoV) have not yet been well characterized and optimized. Hence, in this study, the VIRADEL technique was evaluated and optimized for ...
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Beta ratios explained and applied to liquid filter selection
Liquid Filter Beta Ratios: Absolute rated liquid filter selection is tied to the media micron rating, materials of construction, construction design, and particulate removal efficiency filter factor known as its Beta Ratio (Figures 1, and 2). Consider that Engineering and Purchasing usually see absolute rated liquid filter efficiencies from vendor data sheets and quotes listed at 99%, 99.9% or ...
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