Efficient compound sterilization corrosion inhibitor capable of inhibiting and decomposing biological film and for water system

Abstract

The invention provides an efficient compound sterilization corrosion inhibitor capable of inhibiting and decomposing a biological film and for a water system. The efficient compound sterilization corrosion inhibitor is prepared from the following components in percentage by weight: 0.003 to 0.01 percent of quaternary phosphonium salt, glutaraldehyde and / or cecropin, 0.0001 to 0.005 percent of D-amino acid and the balance of water, wherein the D-amino acid can be used for inhibiting and decomposing the biological film attached on a metal surface and the biological film is converted into a floating sate from a fixation state and microorganisms can be easily killed through fungicide, so that the sterilization effect of the fungicide can be remarkably enhanced and the corrosion caused by the microorganisms is alleviated to the great extent; all the components of the compound sterilization corrosion inhibitor have a synergistic effect and have an extremely excellent sterilization corrosioninhibition effect; the killing rates on sulfate-reducing bacteria, iron bacteria and saprophytic bacteria are greater than or equal to 99 percent and the corrosion inhibition rate is greater than or equal to 80 percent; the disadvantages of traditional fungicide of large dosage, high cost, great toxicity and heavy environment burdens are overcome.

Description

technical field [0001] The invention belongs to the technical field of water treatment in industrial circulating cooling water systems and oilfield production systems, and particularly relates to a high-efficiency composite bactericidal corrosion inhibitor for water systems that inhibits and decomposes biofilms, and is used in industrial circulating cooling water systems and oilfield production systems to inhibit and decompose biofilms. Breaks down biofilms. Background technique [0002] There are a variety of corrosive microorganisms in industrial circulating water systems and oilfield production systems, mainly including Sulfate Reducing Bacteria (SRB), Iron Bacteria (IB) and Saprophytic Bacteria (Total General Bacteria, TGB), etc. The growth, metabolism and reproduction of microorganisms can produce a large amount of mucus-like extracellular polymers (EPS), forming a thick layer of biofilm scale on the inner wall of heat exchange equipment and water injection pipelines, c...

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Problems solved by technology

[0006] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a kind of high-efficiency composite bactericidal corrosion inhibitor for water system that inhibits and decomposes biofilm. After compounding D-amino acid and bactericide, it can solve the problem of traditional chemical bactericide. Large dosage, low bactericidal rate, large side effects, and serious environmental pollution; the compound bactericidal corrosion inhibitor provided by the invention can obviously promote the decomposition of biofilm and inhibit the growth of bacteria under the film, enhance the bactericidal effect of bactericides, and significantly reduce the bactericidal effect of bactericides. Pollution to the environment due to dosage and toxicity

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