This paper describes two major reuse projects that apply ultrafiltration (UF): one in Melbourne, Australia and one in Kuwait. In both the feed source is secondary municipal effluent from an activated sludge process, and the reclaimed water is used for non-potable applications (mainly irrigation water). ? However both projects differ in a number of ...

This paper will discuss the integration of the ultrafiltration membrane system into the existing Keokuk Municipal water treatment works without disrupting the potable water supply, 18 months of operation of the first membrane skid and 6 months of operation of the second membrane skid. It will compare start up and operation of both membrane skids sh...

This presentation covers design considerations for MF/UF membrane systems. Basic parameters including flowrate, treatment goals, feed water quality and other critical parameters are listed. System should be designed to waste less water minimize energy and chemical use and reduce foot print to lower costs....

Low pressure membranes (hollow fiber micro- and ultrafiltration) have been employed in the production of industrial and potable water for two decades. The use of low pressure membrane technology has increased exponentially in this period. Low pressure membranes have been found to be able to replace conventional treatment systems, such as media filt...

This paper describes two large scale membrane treatment applications in China which focus on seawater desalination and reuse schemes. It covers plant design, engineering, and operational information of the two plants and shows why local circumstances sometimes favor waste water reuse and sometime favor seawater desalination....

This paper describes operation of a number of full scale seawater desalination plants ultrafiltration pretreatment over longer periods. These plants differ in capacity from small plants for supply of water to local industry to large scale municipal potable water production plants. These plants are in operation in various geographical locations, s...

There is a global challenge to efficiently use water sources and opportunities with membranes in the oil production, refining, and petrochemical sectors. Membrane technology developments in these fields include produced water management in the oil industry, zero liquid discharge in refineries, and silica removal for boiler feed water. UF membranes ...

With aging of oil wells, the ratio of produced water volume to oil volume is keep increasing. Produced water becomes a natural choice of water supply for oil production process. Thus, more and more oil producers are looking into produced water reuse. This is especially important for the regions where fresh water supply is limited, such as those in ...

This paper describes the 10 months pilot trial on a full-size Hollow fiber Nanofiltration membrane (HFNF) module of type HFW1000. During this pilot continuous high removal rates of Natural Organic Matter ( NOM) > 80%, Color > 90% and COD > 75% were established. A virus removal of 99.9% was obtained. Water municipalities are orientating on HFNF to...

This paper will detail the considerations that favoured hollow fiber nanofiltration membrane filtration over alternatives and design of a number of full scale plants. It will provide operational data of plants and will provide an outlook for implementation of hollow fiber nanofiltration in the production of potable water....

This abstract compares two different membrane technologies: low pressure membranes and a newly developed hollow fiber nanofiltration membrane. The ultrafiltration plants in Scandinaviaemploy a unique method of integrity testing that will confirm virus removal rate of the water treatment plant. Hollow fiber nanofiltration plants are currently being ...

This paper describes how coagulant dose in an ultrafiltration system can be automatically adjusted by means of inline UV monitoring. In this way chemical consumption is minimized while ensuring an optimal water quality and minimal membrane fouling....

This paper describes how coagulant dose in an ultrafiltration system can be automatically adjusted by means of inline UV monitoring. In this way chemical consumption is minimized while ensuring an optimal water quality and minimal membrane fouling....

This paper describes how coagulant dose in an ultrafiltration system can be automatically adjusted by means of inline UV monitoring. In this way chemical consumption is minimized while ensuring an optimal water quality and minimal membrane fouling....

Surface waters contain inorganic and organic particulate substances that need to be addressed and potentially reduced for drinking water production. Inorganic particulate constituents are amongst others clay, silt and minerals. Organic particulate substances can include microorganism like viruses, bacteria and protozoa. One of the major problems of...

Surface waters contain inorganic and organic particulate substances that need to be addressed and potentially reduced for drinking water production. Inorganic particulate constituents are amongst others clay, silt and minerals. Organic particulate substances can include microorganism like viruses, bacteria and protozoa. One of the major problems of...

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