• 专利附录
  • 专利说明
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    • 专利摘要:
    The invention is a method to limit or prevent microbiological growth in an open circulating cooling system by minimizing / limiting phosphate / phosphorus in the water of this cooling system. Minimizing / limiting phosphate is achieved on the one hand by, for example, absorption or (membrane) filtration of phosphate (or phosphorus-containing substances) from the supply water and / or from the recirculating cooling water and on the other hand by preventing the addition of phosphate via corrosion or lime inhibitors. Thus, use is made of completely phosphate-free additives such as, for example, lime inhibitors and / or corrosion inhibitors. By applying this method it is possible to control the growth of microbiology and thus the growth of biosludge and legionella in cooling systems, without regularly and frequently using a biocide program to control the growth of microbiology in cooling systems.
    公开号:NL1042030A
    申请号:NL1042030
    申请日:2016-09-02
    公开日:2017-10-04
    发明作者:Joris Johannes Brigitta Salden Ing；Jan Baas Koos
    申请人:Aquacare Europe B V；Jan Baas Koos；
    IPC主号:
    专利说明:

    Short indication
    Method to limit or prevent microbiological growth in an open circulating cooling system by minimizing / limiting phosphate / phosphorus in the water of this cooling system
    Issue
    Cooling systems
    Open circulating cooling systems are used worldwide in industry and utility. The purpose of a cooling system is to remove process heat. The process heat is transferred to the circulating water of the cooling system, which heats up as a result. In, for example, but not limited to, a cooling tower or evaporative condenser (which is part of the cooling system), the absorbed heat is transferred to the air and to the vapor through forced evaporation.
    Pollution
    Biological pollution is a common problem in open recirculating cooling systems because the circulating water generally forms a good living environment due to a combination of factors such as the presence of water, organic nutrients (sucked in via the air or supplied via the supply of water) and a temperature between 2 0 and 55 ° C.
    This biological contamination can be of a microbiological nature, such as algae, bacteria and fungi (= fungi and yeasts), or of a macro biological nature, such as mussels and other shellfish.
    To prevent problems due to, but not limited to, microbiological contamination, the dosing of (in-situ) biocides is traditionally used.
    BiOPhree
    Method for limiting or preventing microbiological growth in a water-cooled cooling system by minimizing / limiting phosphate / phosphorus in the cooling system.
    The BiOPhree method focuses on preventing microbiological growth in cooling systems by removing or limiting (Concentration P <50ppb) one of the, for microbiological growth essential, nutrients from the cooling water namely P (and all phosphorous-containing substances). When we talk about phosphate, we mean organic and inorganic phosphate including polyphosphate, orthophosphate and also, but not limited to, phosphonate.
    Description Method
    The supply water for the cooling system contains phosphate. In general, this water contains a phosphate concentration of at least 10ppb, in some cases at least 20ppb, in some cases even at least 50ppb and in some cases even at least 100ppb. There is no maximum phosphate concentration for supply water.
    By 1) removing (<50 ppb P) P from the supply water (or cooling water) and by 2) preventing the addition of P (by means of, for example, a P-free or P-poor lime inhibitor or corrosion inhibitor) to the supply water or cooling water, lacking an essential substance for (micro) organisms. As a result, growth or life of micro-organisms is limited or not possible and there will be no (or very limited) pollution of a microbiological nature. 1) Is achieved by, for example, absorption or (membrane) filtration of phosphate (or phosphorus-containing substances) from the supply water and / or from the recirculating cooling water. 2) Is achieved by preventing the addition of phosphate via corrosion or lime inhibitors. Thus, use is made of completely phosphate-free additives such as, for example, lime inhibitors and / or corrosion inhibitors.
    In contrast to the traditional management method, which focuses on "killing" microorganisms, the BiOPhree method focuses on preventing the occurrence of microorganisms or microbiology by removing an essential building material / nutrient.
    Having adequately described the core of the invention and the manner of commissioning, it should be explicitly noted that the method and embodiments as indicated and represented in the text and in the drawings can be modified in detail provided that the fundamental principle of phosphate limitation is not changed. .
    Description of Principle drawing 1
    Phosphate or phosphorus-containing feed water (1) flows through a phosphate or phosphorus-absorbing / filtering / removing device (2) into the cooling device (3). Optionally, a phosphate / phosphorus-free additive (5) (for example, a lime / corrosion inhibitor) is added to the phosphate / phosphorus-free supply water (6).
    Optionally, phosphate or phosphorus-containing cooling water (7) can be supplied via a water tank (4) (the water tank is usually part of the cooling device (3)) via a phosphate or phosphor-absorbing / filtering / removing device (8) over the cooling device (3) ) are recirculated.
    权利要求:
    Claims (2)
    [1]
    1) Method for limiting the growth of microorganisms in cooling systems by means of a P-removal / absorbent / filtering device by limiting / limiting P (phosphate and / or phosphorus / phosphate-containing substances) in the feed water and / or the water from the cooling system.
    [2]
    Method according to claim 1, wherein the method can be extended with the addition of a phosphate-free or low-phosphate lime inhibitor / corrosion inhibitor to the supply water and / or the water of the cooling system.
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    同族专利:
    公开号 | 公开日
    NL1042030B1|2019-02-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL1041789|2016-03-31|
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