Water Filter Articles on Environmental XPRT

Rotork IQ3 actuators selected for Brazilian water treatment plant upgrade

The upgrade at the Rio Manso WTP at Brumadinho in the south east of Brazil involved the building of an additional filter plant, the replacement of obsolete actuators on existing plant and the introduction of a Profibus digital control network. ...

Apr. 21, 2017

By Rotork

Rhode Island Wastewater Plants Key To Water Quality Reversal

Despite evidence that often points to the contrary, many bodies of water around the country stand as prime examples of how environmental quality can be improved with the proper will and effort. Take, for instance, Narragansett Bay, located on the north side of the Rhode Island Sound. Located near some of America’s oldest settlements, the bay has ...

Apr. 24, 2017

By KLa Systems, Inc.

The Importance of Dewatering

With spring comes two things: the onset of construction season for most of our country and rain- lots and lots of rain. The unpredictability of storms and the amount of rainfall is all a guessing game. Jobsites flood, work stalls and projects get delayed. Rain makes it hard to keep dry and on-schedule. What’s the solution? Dewatering is a technique used to control ...

May 17, 2017

By Pac-Van, Inc.

How Do You Choose the Best Reverse Osmosis and Nanofiltration Membrane System for an Industrial Facility?

As global demands for clean water increase, more and more industrial facilities are looking toward membrane filtration solutions, such as reverse osmosis (RO) and nanofiltration (NF), to help manage intake, process, and waste water treatment. Using membrane filtration can help your facility reuse wastewater and virtually eliminate discharge fees, and depending on the industry or required use, it ...

May 16, 2017

By SAMCO Technologies, Inc.

UV Minimises Risks for Major Food Retailers

For many years, one of the UK’s largest food manufacturers has made it their business to be the best at producing all manner of bespoke cooked and raw, ready-to-eat vegetables and carbohydrates for their customers, who include chilled food manufacturers, food-to-go operators and, of course, major supermarkets. Being the best means not only complying with food quality standards set by ...

May 18, 2017

By atg UV Technology

Scrubber Removes Grease and Particulates from Air Exhaust

Operating Issue A food-industry leader in Alabama operates several pork-sausage cookers that exhaust over 4,000 ACFM of moisture and pork grease. The operator installed Electrostatic Precipitators (ESPs) to treat the exhaust but these systems performed poorly and generated high maintenance and operating costs. Additionally, these systems were antiquated and required significant capital ...

Jun. 16, 2016

By Pollution Systems

Water filters fact sheet

Why do people use water filters? Water filters are used to upgrade the quality, taste and appearance of water in the home. Water filters can also be used to eliminate concerns about contaminants and other potential health hazards in tap water. What do water filters do? Water filters eliminate a number of common water problems in the home, ...

Oct. 6, 2015

By Kinetico - an Axel Johnson Company

Water treatment plant filter improvements

Client: City of Junction City, Kan. Completion Date: March 2003 Services Provided Filter rehabilitation Air scour system design Construction phase services Project Summary Burns & McDonnell provided planning, design, bidding and construction services for the City of ...

Sep. 21, 2009

By Burns & McDonnell

Filter backwash water treatment options

Filtration acts as the final step in the removal of suspended matter and protozoa. The accumulated residue is removed during the backwash process and any subsequent recycling of filter backwash water could potentially re-introduce these contaminants into the main treatment process. By separating the filter backwash water from the main treatment process, factors that could interfere with the ...

May 28, 2014

By IWA Publishing

Filter backwashing

Backwashng a drinking water system filter means reversing and increasing the water's flow to flush out accumulated debris and particles. Backwashing is not only vital to the life of a filter, it is fundamental to the quality of water coming out of the filter. Sooner or later, all filters need to be backwashed or ...

May 26, 2009

By Entech Design, Inc.

Soil Filters

Soil filters (in german: Retentionsbodenfilter) are facilities for the removal of nutrients and/or pollutants; typically on the level of an industrial site, a quarter or a drainage system (sub-)catchment. Usually they are located at the discharge points to surface waterbodies to ensure water quality standards. Soil filters consist of two parts: The first part is a retention pond or basin for ...

Sep. 12, 2011

By IWA Publishing

Filter aids

Filter aids are used to assist filtration of colloids, extra fine particles, gel like, and highly compactible materials, which are difficult to be filtered due to low filtrate rate, unacceptable filtrate clarity, high cake moisture content, or serious filter medium clogging. They can be used as “precoat” on the surface of filter media or in conjunction with feeding suspension as ...

Jul. 29, 2011

By American Filtration & Separations Society

Combination filters

Simply defined, a combination filter is one that does at least one other processing job at the same time as filtering a suspension. The classic example, of course, is the packed bed of activated charcoal, which acts as a remover of chemical impurities from the suspension, as well as removing dust particles - although this is actually not a very good example, because it is primarily an adsorber, ...

Jul. 28, 2011

By American Filtration & Separations Society

The Next-Generation Water Filter for the Oil and Gas Industry

Many segments of the oil and gas production industry need improvements in water filtration over traditional methods. This is true because of the trend toward oil and gas production in tighter, less permeable reservoirs and the greater use of enhanced oil recovery (EOR) techniques, many of which involve injecting water into the oil reservoir. To protect the integrity of such reservoirs, the amount ...

Oct. 1, 2013

By Eco-Tec Inc.

An antimicrobial polycationic sand filter for water disinfection

A new sand filtration water disinfection technology is developed which relies on the antimicrobial properties of hydrophobic polycations (N-hexylated polyethylenimine) covalently attached to the sand's surface. The efficacy of the filter disinfection process was evaluated both with water spiked with E. coli and with real aqueous effluent from a wastewater treatment plant. For the ...

Jan. 1, 2011

By IWA Publishing

Alternative filter media for potable water treatment

Need for Research Roughing filters at London works: Low backwash rates for filters at older works Inability to keep sand clean (rising normalised starting head loss) Vulnerability to algal laden water Loss of production at critical times during the year Objective: identify mono-medium & dual media alternatives to BSS 14/25 ...

Jan. 5, 2016

By Filtralite Saint-Gobain Byggevarer As

Filter refurbishment program for Thames water in Berkhamstead

Purpose of rental unit: To provide additional nitrification to works whilst trickling filters were refurbished Consent standard required: 3mg/l NH4 Total flow to the unit: 21l/s @ 1 hours retention (50 minutes is minimum retention to achieve nitrification) Unit supplied: 1 x Steel 1000pe wastewater treatment unit ...

Mar. 1, 2009

By WPL Ltd

Filter refurbishment program for Southern Water in Eastrey

Peak flow to treatment: PE of site: 2090 (550 m3/day) Formula A site Units supplied: 2 off steel 500 pe units (Rental units) Purpose of rental units: To allow for the refurbishment of trickling filter beds, initially the SAF units were used for both carbonaceous treatment and ammonia removal. Once the trickling filter beds were ...

Mar. 1, 2009

By WPL Ltd

Assessment of a membrane drinking water filter in an emergency setting

The performance and acceptability of the NeroxTM membrane drinking water filter were evaluated among an internally displaced population in Pakistan. The membrane filter and a control ceramic candle filter were distributed to over 3,000 households. Following a 6-month period, 230 households were visited and filter performance and use were assessed. Only 6% of the visited households still ...

Jun. 8, 2015

By IWA Publishing

Serological responses to Cryptosporidium antigens among women using riverbank-filtered water, conventionally filtered surface water and groundwater in Hungary

ABSTRACTWe compared serological responses to Cryptosporidium parvum antigens using surplus sera from females undergoing routine screening for pregnancy from three counties in Hungary where bank-filtered surface water, conventionally filtered and disinfected surface water, and groundwater from either a karst or confined aquifer are commonly used for drinking water. The primary purpose was to ...

Mar. 1, 2005

By IWA Publishing

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