Fungicide

Applications and Performance
　　This bactericide combines multiple effects of sterilization,algae removal,and slime removal.It is a national invention patent product of our company(patent number:ZL 2009 1 0020468.6).Its sterilization rate can reach over 99.9%,and it has been widely used in petrochemical,fertilizer,and power systems for many years.
Product Features
　　Broad-spectrum bactericidal effect,capable of killing and inhibiting various microorganisms,molds,and algae commonly found in industrial water systems;highly efficient and low toxicity.
　　Excellent stripping effect without foaming.
　　Long-lasting action;exhibits long-term stability in water,resulting in a prolonged duration of efficacy.
　　Wide applicable pH range.
　　Good compatibility;readily compatible with various scale and corrosion inhibitor formulations.
Instructions for Use
　　The bactericide and algaecide are added via shock application,typically at a dosage of 100-200 ppm.It does not cause significant skin irritation;if skin contact occurs,rinse with water or soap.
Packaging,Transportation,and Storage:

       Packed in plastic drums,net weight 25 kg,or packaged according to customer requirements.
　　Transported by road or rail;self-pickup or door-to-door delivery as per contract.
　　Store in a cool,ventilated,and dry warehouse;shelf life two years.

Quality indicators

project	index
pH (1% aqueous solution)	≥2.0
Density (20℃) g/ml	≥1.01

　　In various fields such as daily life,agricultural production,and industrial manufacturing,the presence of microorganisms often brings many troubles.The harm of microorganisms cannot be underestimated,from causing food spoilage and deterioration,to causing crop diseases and reduced yields,to causing corrosion and pollution of industrial equipment.And fungicides,as a"weapon"against these microorganisms,are playing a crucial role and becoming an"invisible shield"to protect our health and safety.
　　Therefore,as a key component of water treatment chemicals,the core value of fungicides lies in effectively controlling microbial populations,ensuring the safe and stable operation of industrial systems,improving energy utilization efficiency,extending equipment service life,and ensuring that production processes comply with hygiene and environmental standards.An efficient and applicable fungicide is an indispensable technical guarantee for many industrial facilities to achieve long-term,low-cost,safe and environmentally friendly operation.
　　1、Definition and mechanism of action of fungicides
　　Fungicides are a type of chemical agent used to inhibit or kill microorganisms such as bacteria and fungi.It achieves sterilization through multiple mechanisms of action.
　　Disrupting cellular structure:Many fungicides can act on the cell wall or membrane of microorganisms.The cell wall is an important barrier for microorganisms to maintain cell morphology and protect internal structures,while the cell membrane controls the entry and exit of substances.For example,certain polyene fungicides can bind to ergosterol in the fungal cell membrane,disrupting the structure and function of the cell membrane,leading to the leakage of substances inside the cell and causing fungal death.It's like opening a hole in the"protective shell"of a fungus,making it unable to survive normally.
　　Interference with metabolic processes:The normal growth and reproduction of microorganisms depend on a series of metabolic processes,including energy metabolism,substance synthesis,etc.Fungicides can interfere with these metabolic processes and block the life activities of microorganisms.For example,some sulfonamide fungicides can inhibit the enzyme activity related to folate synthesis in bacteria,which is an essential substance for bacterial synthesis of nucleic acids and proteins.Lack of folate prevents bacteria from carrying out normal genetic material replication and protein synthesis,ultimately leading to death.
　　Impact on genetic material:Some fungicides can directly act on the genetic material of microorganisms-DNA or RNA.They can bind to DNA or RNA,interfere with their replication,transcription,and translation processes,preventing microorganisms from transmitting genetic information and producing normal proteins,thereby inhibiting their growth and reproduction.For example,certain quinolone fungicides can inhibit the activity of bacterial DNA gyrase,hinder the replication of bacterial DNA,and thus achieve bactericidal effects.
　　2、Main product types and application scenarios
　　There are various types of fungicides in the field of industrial water treatment,and different application scenarios require the selection of different types of products.
　　Quaternary ammonium salt fungicides,such as dodecyl dimethyl benzyl ammonium chloride(1227),are one of the most widely used non oxidizing fungicides.They have good bactericidal and algaecidal properties,as well as the ability to remove sticky mud.Due to its cationic properties,it has a certain surface activity and can help remove biofouling on the surface of equipment.Widely used in circulating cooling water systems,oilfield water injection systems,and various industrial cleaning processes.
　　Isothiazolinone fungicides:such as compound products composed of chloromethylisothiazolinone and methyl isothiazolinone,are highly efficient and broad-spectrum fungicides.It works by inhibiting the respiration and energy metabolism of microorganisms.Its characteristics are low concentration,wide pH applicability,good compatibility with the environment,and natural biodegradability.Very suitable for systems that require strict emission control and long-term inhibition of microbial regeneration.
　　Glutaraldehyde fungicide:Glutaraldehyde is an efficient cross-linking fungicide,and its two aldehyde groups can simultaneously react with amino groups in proteins to form intermolecular cross-linking,thereby disrupting protein structure and rendering it inactive.It has a specific effect on anaerobic sulfate reducing bacteria,and SRB is the main bacterial species causing corrosion in underground and equipment.Therefore,glutaraldehyde plays an irreplaceable role in oilfield reinjection water systems.
　　Bromine fungicides,such as bromonitrostyrene and activated bromine(generated by on-site activation of bromine source and oxidant to produce hypobromous acid),belong to oxidative fungicides.Bromine fungicides are more active than chlorine in water with higher pH values(>8.0),have a faster sterilization rate,and are relatively less corrosive to metals.The toxicity of bromine amine by-products produced is also lower than that of chloramine.Especially suitable for circulating cooling water systems with high pH and alkalinity,as well as cooling towers that require rapid killing of Legionella bacteria.
　　Composite fungicides:Modern water treatment technology increasingly tends to combine fungicides with different mechanisms of action.For example,compounding quaternary ammonium salts with isothiazolinone,or compounding glutaraldehyde with quaternary phosphonium salts.This'synergistic effect'can broaden the spectrum of sterilization,improve sterilization efficiency,reduce the dosage of a single agent,and effectively delay the development of microbial resistance.Composite fungicides have become the mainstream choice for addressing complex microbial problems and achieving multi-objective control.
　　3、Selection principle
　　When selecting fungicides,the following basic principles should be followed:
　　Targeted principle:Firstly,the water quality and microbial population of the system should be analyzed to identify dominant bacterial species and major issues(such as bacterial corrosion,algae growth,or mud blockage),and then the most effective agent for the target microorganisms should be selected.
　　Rotation principle:Long term use of a single fungicide can easily lead to microbial resistance.Therefore,in practice,fungicides with different mechanisms of action are usually used alternately,or composite products are directly used to maximize the bactericidal effect and prevent the emergence of resistant strains.
　　Technical and economic balance:On the premise of meeting technical requirements and environmental standards,it is necessary to comprehensively consider the unit price,dosing frequency,dosing dosage,and the comprehensive benefits brought by the chemicals(such as reduced energy consumption,reduced maintenance costs,and extended equipment life),and choose the most cost-effective solution throughout the entire life cycle.
　　Fungicides are an indispensable and solid defense line in modern industrial water treatment technology.By delving into its mechanism of action,product types,and selection principles,and following safe operating procedures,the industry can effectively harness this powerful tool to provide solid guarantees for the safe,efficient,long-term,and environmentally friendly operation of the system.