Water Filtration Articles

669 Results found
  • Category: Water & Wastewater ×

  • Subcategory: Water Filtration ×

Pulp & Paper Industry: PTA Repair and Rebuild of Screw Press

by Castolin Eutectic  (May 25, 2014)

Eutectic Canada recently completed the manual PTA finishing of a stainless steel feed screw for a large OEM supplier of these parts. The screw is used to compress the pulp and separate liquids from solids by expelling the liquids through a screen that surrounds the compression screw. Due to the high pressure, the friction wore the carrying face ...

Well water win-win

by Ensia  (Oct. 22, 2014)

Solve two problems with one filter? That’s what Drinkwell aims to do. Begun through a collaboration between researchers at Lehigh University and the Bengal Engineering and Science University, the Boston-based social venture ...

The Four Seasons of Rainwater Collection – Ideas & Tips for Re-using Rainwater in Summer, Autumn, Winter & Spring

by Gutter Mate Ltd  (Oct. 10, 2014)

Rainwater in the summer What’s next for this summer? If you run out of water during a dry spell, it’s the ideal time to inspect and clean your water butt or tank. It’s also the time when you should consider how you use your rainwater harvesting system and ideas you may have for modifying it. Modifying your system at a time when ...

Efficacy of arsenic filtration by Kanchan Arsenic Filter in Nepal

by IWA Publishing  (Sep. 25, 2014)

Groundwater arsenic contamination has caused a significant public health burden in lowland regions of Nepal. For arsenic mitigation purposes, the Kanchan Arsenic Filter (KAF) was developed and validated for use in 2003 after pilot studies showed its effectiveness in removing arsenic. However, its efficacy in field conditions operating for a long ...

Urban water reuse: microbial pathogens control by direct filtration and ultraviolet disinfection

by IWA Publishing  (Sep. 25, 2014)

Physicochemical treatment efficiency for unrestricted urban water reuse was evaluated at a conventional activated-sludge wastewater treatment plant (WWTP). Pilot plant set-up consisted of an alum coagulation step, granular media upflow flocculation and direct downflow dual-media filtration followed by ultraviolet disinfection (dose of 95 mJ ...

Continuous phosphorus removal from water by physicochemical method using zero valent iron packed column

by IWA Publishing  (Sep. 17, 2014)

Excessive phosphorus in aquatic systems causes algal bloom resulting in eutrophication. To treat wastewater including effluent of wastewater treatment plant containing various amounts of phosphorus, a series of continuous experiments on removal of phosphorus from water were performed by using an electrochemical method. The spherical type of zero ...

Impact of polymeric membrane filtration of oil sands process water on organic compounds quantification

by IWA Publishing  (Sep. 17, 2014)

The interaction between organic fractions in oil sands process-affected water (OSPW) and three polymeric membranes with varying hydrophilicity (nylon, polyvinylidene fluoride and polytetrafluoroethylene) at different pHs was studied to evaluate the impact of filtration on the quantification of acid-extractable fraction (AEF) and naphthenic acids ...

Struvite and Vivianite Screw Presses and Heat Exchanger Removal case study

by Struvite Removal  (Sep. 11, 2014)

A regional wastewater treatment plant in Sonoma County was experiencing problems with struvite on their screw presses and vivianite on their heat exchangers. The design plant flow rate is 7.9 mg/day. They were using 7 mg/L to 10 mg/L (dry basis) of ferric chloride to control hydrogen sulfide and improve solids removal in the primary clarifier. The ...

Struvite belt press removal case study

by Struvite Removal  (Sep. 11, 2014)

A wastewater treatment plant near Flagstaff, AZ was experiencing problems with keeping their belt aligned on the belt press. The belt press was in operation 4 days per week for 6 hours per day. The flow rate was 150 gallons per minute (gpm). Upon close inspection of the belt press system, the maintenance staff observed scale deposits on the ...

Struvite screw presses removal trial case study

by Struvite Removal  (Sep. 11, 2014)

Based on the lab supervisor’s recommendation, the plant ordered two 55 gallon drums of JS 9325 for a plant trial on the screw press. They set up a spray system to meter JS 9325 on the outer surface of the screw press. During the first five (5) days of the struvite removal trial, plant operations noticed that the openings on the screens were ...

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