How to disinfect, sterilize and control microorganisms in cultivation irrigation water systems
Soilless cultivation is an advanced agricultural production method. Its core lies in using nutrient solutions to replace soil and provide necessary nutrients and water for plants. Artificially regulating the environmental conditions for crop growth, such as temperature, light, water and nutrients, etc., can fully bring out the production potential of crops, increase yield and quality. However, under this cultivation mode, the disinfection and sterilization of the irrigation water system have become a crucial link
1. The occurrence of diseases in hydroponic vegetables
2. The pathways of microbial infection in irrigation water systems
3. The Importance and Methods of hydroponic pipeline disinfection
4. Eddaair：The Importance and Methods of hydroponic pipeline disinfection
1. The occurrence of diseases in hydroponic vegetables
The normal growth of hydroponic vegetables is highly dependent on the quality and management of nutrient solutions. However, in actual production, due to the long-term contact between nutrient solutions and plant roots, the risk of disease transmission has significantly increased. Once pathogenic bacteria invade the nutrient solution, they can spread rapidly among crops, causing serious damage. Common root diseases such as fusarium wilt and bacterial wilt in tomatoes, and blight in cucumbers, are all key targets that need to be prevented in hydroponic vegetable production.
The occurrence of these diseases is often closely related to microbial infection in the irrigation water system. Microorganisms, including bacteria, fungi, viruses, etc., can enter the irrigation water system through various channels, multiply in it, and then infect the root systems of plants. Therefore, effectively controlling the number of microorganisms in the irrigation water system is the key to preventing plant diseases and ensuring the healthy growth of crops.
2. The pathways of microbial infection in irrigation water systems
The pathways of microbial infection in irrigation water systems are diverse, mainly including the following aspects:
1. Water source pollution: The water source itself may carry various microorganisms, including pathogenic bacteria. If not treated or handled improperly, these microorganisms may enter the hydroponic system along with the irrigation water.
2. Pipeline contamination: Irrigation pipelines are prone to accumulate dirt and microorganisms during use. Especially at pipe connections, elbows and other parts, due to the slowed water flow rate, it is easier for biofilms to form, becoming a breeding ground for microorganisms.
3. Improper management of nutrient solutions: During the preparation, storage and use of nutrient solutions, if the operation is not proper, microorganisms may also be introduced. For instance, the use of unsterilized containers, tools or water sources may all lead to the contamination of nutrient solutions.
4. Human factors: During the hydroponic production of vegetables, human operations may also serve as a means for the spread of microorganisms. For instance, if staff come into contact with plants or nutrient solutions without washing their hands or wearing protective clothing, they may bring microorganisms into the system.
3. The Importance and Methods of hydroponic pipeline disinfection
In view of the severity and complexity of microbial infection in irrigation water systems, it is particularly important to disinfect and sterilize hydroponic pipelines. Effective disinfection methods can not only kill existing microorganisms but also reduce the formation of biofilms, thereby lowering the risk of disease transmission.
At present, the commonly used disinfection methods for hydroponic pipelines mainly include two categories: physical disinfection and chemical disinfection.
1. Physical disinfection method
(1) Ultraviolet disinfection: Ultraviolet disinfection is a non-chemical disinfection method. Its principle is to destroy the DNA structure of microorganisms through ultraviolet radiation, thereby achieving the purpose of sterilization. In the disinfection of hydroponic pipelines, ultraviolet lamps can be used to irradiate the irrigation water. However, it should be noted that the sterilization effect of ultraviolet disinfection is influenced by multiple factors, such as the intensity of ultraviolet rays, the duration of irradiation, and the transparency of water quality. In addition, the disinfection effect of ultraviolet disinfection on the interior of pipelines is limited, so it is usually necessary to be used in combination with other disinfection methods.
(2) Ozone disinfection: Ozone disinfection is a highly oxidizing disinfection method that can quickly kill microorganisms in water. The oxygen atoms produced by the decomposition of ozone in water have a strong oxidizing capacity, which can destroy the cell walls and cell membranes of microorganisms, thereby achieving the purpose of sterilization. However, ozone disinfection also has some limitations, such as poor stability and easy decomposition of ozone; Ozone has certain toxic effects on the human body and needs to be used in a closed environment. The disinfection effect of ozone disinfection on the interior of pipelines is also not as good as that of chemical disinfectants.
2. Chemical disinfection method:
The chemical disinfection method is a technique that kills microorganisms by adding chemical disinfectants to irrigation water.
(1)Chlorine-containing disinfectants: Chlorine-containing disinfectants are widely used chemical disinfectants, featuring excellent bactericidal effects and low cost. However, there are also some problems in the use of chlorine-containing disinfectants, such as the pungent smell of chlorine being harmful to the human body; The decomposition rate of chlorine is relatively fast, and the duration of the disinfection effect is relatively short. Chlorine may react with organic matter in water to produce harmful disinfection by-products, etc.
(2) Hydrogen peroxide: Hydrogen peroxide is an environmentally friendly chemical disinfectant, featuring excellent bactericidal effect and harmless decomposition products. The oxygen atoms produced by the decomposition of hydrogen peroxide in water have a strong oxidizing capacity and can destroy the cellular structure of microorganisms to achieve the purpose of sterilization. In addition, hydrogen peroxide also has broad-spectrum bactericidal properties and can effectively kill a variety of microorganisms such as bacteria, viruses and fungi.
(3) Quaternary ammonium salt disinfectants: Quaternary ammonium salt disinfectants are broad-spectrum bactericides that have excellent killing effects on various microorganisms such as bacteria and fungi. Quaternary ammonium salt disinfectants have the advantages of good stability and low irritation. However, quaternary ammonium salt disinfectants also have some limitations, such as the disinfection effect being affected by the hardness of water quality; Quaternary ammonium salt disinfectants may react with other chemical substances to form precipitates or reduce the disinfection effect, etc.
4. Eddaair：The Importance and Methods of hydroponic pipeline disinfection
In view of the various problems existing in traditional disinfection methods, it is particularly important to find an efficient, safe and environmentally friendly disinfection solution for vegetable hydroponic pipelines. As a new type of hydroponic plant sterilization product, Eddaair has stood out in the hydroponic field with its unique advantages and wide application range.
High-efficiency and broad-spectrum sterilization
Eddaair has a broad-spectrum bactericidal effect and can quickly kill various types of microorganisms such as bacteria, fungi and algae in nutrient solutions and pipelines, preventing the spread and expansion of diseases.
Eco-friendly and residue-free:
After its action, it decomposes into water and oxygen. It is non-toxic and leaves no residue, posing no threat to human health, nor does it pollute the environment or water sources. It has no drawbacks of traditional pesticide residues.
Non-corrosive:
No irritation or harm to plants. It can be safely used for stem and leaf spraying of plants and for disinfecting hydroponic solutions, and it does not cause corrosion to pipelines.
Application scenarios of plasma activated water
1.Applied to wastewater treatment, purification, and odor removal
Chemical wastewater pretreatment; Pharmaceutical intermediates; Pre treatment of pesticide wastewater; Wastewater from aquaculture and food processing; Paper mill wastewater; Pre treatment of printing and dyeing wastewater; Removing odors from outdoor garbage dumps;
Advantages: (COD reduction, decolorization, ring breaking, toxicity relief, improved biodegradability, removal of suspended solids, decolorization, total nitrogen degradation)
2.Applied to daily life, food, and agricultural water use
Swimming pool water body; Water purification plant; Food processing plants; Purification of aquatic products; Agricultural planting industry;
Advantages: (Used for purification, sterilization, disinfection, removal of impurities, promotion of blood circulation in aquatic products, elimination of heavy metals and toxins in the body, ion water supply to plants,
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