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The chemical treatment separates out the solids suspended in the liquid and forms potentially buoyant flock. The flock is made to float by adding micro-bubbles to the liquid, which stick to the flock, thus reducing the density of the flock/micro-bubble group. The micro-bubbles are produced by expanding air diluted in water under pressure (DAF: dissolved air flotation). A scraper is used to remove the floating flock, thus ending the physical treatment. Depending on the flow, the suspended solids and the application, we can offer floats with and without laminates (they reduce the surface area of the float) for flows of up to 100 m3/hour (F(L)5-F(L)100 models). The newly developed F35 can treat 35 m3/h and has a hub without laminates. The F35 arose from the need to treat larger flows when laminates cannot be used in the float such as, for example, when the solids load is high or the flock is too large. The pressurisation system in all these third generation floats has been improved and now works with a multi-stage pump designed especially to produce micro-bubbles. The pump can suck in the air required for micro-bubble production so there is no need to install an air supply, thus lowering maintenance costs. Because of the new level regulating system, the sludge extracted is drier. The dosing and mixing of the on line reagents (static mixer) has also been improved, resulting in a reduction in the reagents to be added, significantly lowering maintenance costs. The ergonomics and safety of the equipment have been improved and the floats now comply with safety standards and carry the "CE" mark. Til Boheme |
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Mr Michelangelo Marchionna, the product manager for BIODESTIL,
a technology applied to the treatment of highly polluted wastes in which
high purification is required, such as oil sludge and leaching, explained
the technical aspects of the product. Thanks to these magnificent results, MP ENVIRONMENTAL currently has BIODESTIL purifiers installed in six plants. BIODESTIL is registered as EU trademark number 2143121, in classes 11, 37 and 42. Jesús Jiménez |
BIODESTIL: plant for the evaporation of highly polluting wastes, with various installations operating, applied to the treatment of leaching, oil sludge and wastes with high chlorides content. WATROMAT: equipment for heat-drying sludges, achieving a drying of 90%, with the consequent saving in the cost of handling them.
Continuing with its policy of acting within the sector, MP ENVIRONMENTAL has been an exhibitor at an important number of events, notably ALIMENTARIA (Lisbon), EXPOMATEX (Barcelona), EXPOLIVA (Jaén), and INTERALIMED (Valencia), thus strengthening the image of our company in order to reaffirm good relations with current clients and establish relations with potential ones. Julio Moreno Valseca |
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During this period, projects have been developed, such as Júver (Murcia) that have set records in all senses: construction time and compliance with parameters. This plant purifies the waste, mainly from the preparation of juices, at the rate of some 1400 m3/day. It has a grinder with a hydraulic grate, pump, and a screen with rotary filters of 0.75 and 0.25 mm gauge. Once the waste has been screened it is pumped to two stainless steel surface tanks, each with a capacity of 500 m3, containing agitators and aeration equipment, so that each tank may be filled and emptied independently. The homogenised waste is pumped in a constant flow to a floatation system using micro-bubbles to which a coagulant, soda and flocculent are added. The sludge is removed to a homogenising sump for later drying by centrifuging. This system reduces DQO values from 4000 mg/l to 2000
mg/l and the output of suspended solids is over 95 %. Antonio González Fadrique |
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SERIES OF CONFERENCES IN ARGANDA DEL REY Madrid Branch Antonia Jiménez, R&D, Biological Processes |