Technical information

<b>Pilot test at Boden (SE) for biological removal of iron and manganese with Filtralite Pure Mono-Multi</b><br> <br> The pilot filter with Filtralite® which was studied in this work reduced iron and manganese significantly and removed more than 95% of both metals. The start-up period was about a week for the iron oxidation and significantly longer, closer to 70 days, for the manganese oxidation.<br>

<b>A new process for the water recovery for olive washing wastewater based on biofiltration and membrane separation</b><br> <br>Filtralite Clean HR 4-8 is used for olive washing wastewater treatment in a 2m3 aerobic fixed-bed reactor, prior to two subsequent batch membrane processes, that is ultrafiltration (UF) and nanofiltration (NF).<br><br> This process allows to recycle 80% of the washing wastewater for an agriculture use.

<b>Aerated biological filtration for the removal of ammonia and manganese in a major drinking water treatment plant in Hong Kong</b><br> <br> Pilot test with Filtralite Pure HC 2,5-5 demonstrated that the nitrification process developed rapidly (2-3 days) in the aerated biological filter without "seeding" the filter media. By the beginning of the second week of operation, about 85% ammonia removal was achieved, with raw water ammonia concentration of up to 2.4 mg/l (N) and a filtration rate of 14 m/h.

<b> Pilot test for Iron removal at Babite (CZ)</b><br> <br> A pilot test was done at Babite (CZ) with Filtralite Pure Mono-Multi to confirm efficiency of iron removal technology for groundwater treatment, with target filtration rate 20 m/h and up. <br>

<b>Effect of ozonation/filtration on the raw water from Lac Mälaren</b><br> <br> A Filtralite Pure filter was tested as an alternative to a GAC-filter, in combination with a pre-ozonation and a lower coagulant dose. <br>

<b>Alternative filter media for potable water treatment</b><br> <br> Pilot trials, conducted by Thames Water, compared conventional sand and anthracite/sand media alongside crushed recycled glass and Filtralite Pure Mono-Multi. The Filtralite solution confirmed as the best one for treatment of eutrophic water from reservoirs. <br>

<b>Biological filtration of poor quality brackish water reduces Reverse Osmosis membrane fouling</b><br> Removing the manganese greensand in the existing filters and replacing them with Filtralite filter media resulted in a rapid improvement of treated water quality and a literal stop to frequent RO cleanings. The new biological filters need to be backwashed 36 times less often than the previous manganese greensand filters (100 filter backwashed per year vs. 3,600). Backwash water use decreased to 0.4 million L from 23 million L and backwash labor decreased to 40 hours from 1,440 hours per year.<br>

<b>Report from IWW Water Center (Germany)</b><br> <br> Investigation of the newly developed filter media Filtralite on its general filtration performance in surface water treatment for drinking water and with special respect to removal of microbial contaminants.<br>