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Membrane Bioreactors (MBRs) may have a reputation for being costly, but they don’t have to be.
A survey of 137 MBRs on the US mainland shows that an MBR using flat plate technology is typically half to three-quarters the capital expenditure (CAPEX) of hollow fiber systems. There is some data that suggests MBR Systems are competitive with several other technologies, including oxidation ditches, SBRs, MBBRs, and BNR plants. There is insufficient data to say definitively that a flat plate system costs less, but the data suggests that it can be cost effective versus conventional systems treating to the same quality effluent.
19 January 2012
The City of Santa Paula, Calif. is home to the first large membrane bioreactor (MBR) installation in North America to use PURON™ membrane filtration modules. It is also the first water recycling facility built under a California government code to encourage private investment to solve public infrastructure needs Santa Paula’s outdated wastewater facility was in violation of several discharge requirements issued by the Los Angeles Regional Water Quality Control Board, and had received more than 3,000 violations and $8 million in fines.
11 January 2011
Controlling levels of contamination in the food and beverage industries is a key role of filtration. Dr Ralph Heusslein and Ursula Brendel-Thimmel of Pall Corporation, Scientific and Laboratory Services, explain the links between filter performance and microbiological product safety.
29 November 2010
Changing climate patterns, population growth pressures and the limited availability of new and inexpensive fresh water supplies are shifting the water industry's attention. In an emerging trend, the world is reaching to the ocean for fresh water. Nikolay Voutchkov from Water Globe Consulting explains recent trends and explains his predictions for the future market.
01 November 2010
Recent studies have shown that the control of pond depth can be used to improve the performance of centrifuges used in a wastewater treatment plant.
06 October 2010
The effect of high inlet solid loading on collection efficiency, pressure drop and attrition of catalyst in a FCC regeneration cyclone has been studied by computational fluid dynamics. Sh. Tamjid, S.H. Hashemabadi and M. Shirvani report their findings.
06 October 2010
Membrane filtration in water treatment has undergone significant development in recent years and the introduction of polyethersulphone as a membrane polymer isone of these. Dr Christian Maletzko of BASF explains the permeability advantages of this material.
21 July 2010
A team put together by CETIAT, the study, testing and calibration laboratory in France, has been investingating the problem of particle shedding from HVAC filters. The project is searching for a reproducible method of testing filters in different laboratories. Alain Ginestet and Dominique Pugnet of CETIAT and Magnus Johnsson and Thomas Carlsson of Vokes Air outline what has been discovered to date.
21 July 2010
Some recent development work has produced a new hydro-entangled filter media for solid/gas and solid/liquid filtration.
21 July 2010
Stricter international regulations and growing public awareness are forcing even small, remote wastewater treatment plants to employ efficient treatment, to avoid pollution of neighbouring lakes and rivers. This article explains how things are different for smaller treatment plants.
22 February 2010
Dealing with the contaminants in the wastewater output of a diesel power plant can be problematical. This article provides an outline of the new developments in a method of bioremediation which can improve the efficiency of the wastewater treatment.
22 February 2010
Energy consumption awareness is increasing, and the need to reduce energy consumption drivse manufactures to introduce energy efficiency indicators in almost every product and engineering field. The air cleaning industry is no exception.
19 February 2010
This article questions whether recycling air filters is a viable alternative to buying new. It asks how it can be done, whether it's the right thing to do and takes a look at a successful example of recycling.
19 February 2010
Oil and water shortages are turning attention towards alternative energy sources. Rajindar Singh looks at the potential of fuel cells as an energy source for filtration, especially with water production processes.
18 February 2010
This article takes a look at the various filtration techniques available to produce the different grades of pure and ultrapure water required in industry.
17 February 2010
Flora Tong explains the role which ultrafiltration is playing as the city adapts to modern needs and an increased demand for water.
17 February 2010
This article examines ultrafiltration, as a solution to dealing with raw feed water, in Russia's power station water treatment plants.
16 February 2010
Neil Meadows explains how using high efficiency impellers can improve flocculation rates.
16 February 2010
The wastewater industry is increasingly adopting anaerobic digestion technology into sludge treatment processes. This article examines how the energy, which is generated as a result, is used on-site and re-sold to the grid.
12 February 2010
Ken Sutherland looks at the impact of filter media selection on the energy efficiency of a filter installation.
12 February 2010
Adrian Ovezea explains how efficient use of fine bubble diffusers can save energy in sewage and water treatment plants and looks at the different options available.
12 February 2010
In this article, Larry Scheer looks at the use of syringe filters for analytical sample testing, including those used in HPLC and dissolution testing.
12 February 2010
In this article, Ken Sutherland examines the developments in process filters used in the recovery of high concentrations of suspended solids.
09 February 2010
This article explores how the reuse of clean water in process industries, and heating and cooling systems, can provide significant water and energy savings.
09 February 2010
Listen and learn about the new BIO-CEL®- Mechanical Cleaning Process developed by MICRODYN-NADIR.
01 September 2009