The ozone generator is applied to food processing, fresh-keeping of fruits and vegetables, anti-corrosion and mildew resistance, and the effect is very good.
1. At present, a number of food export enterprises in Beijing, Tianjin, Shandong and other places use the "open" generator of Qinhuangdao Zhankun Disinfection Equipment Co., Ltd. in food processing room, which has improved the product qualification rate and achieved good economic and social benefits. . It is a complicated and difficult task to store vegetables, fruits, mold, fresh vegetables and fruits. Ozone can play a role in both sterilization and mildew reduction and metabolism. It can be combined with packaging, refrigeration and air conditioning to improve the preservation effect. Ozone sterilization and mildew prevention in three stages: empty storage disinfection, storage sterilization and daily anti-mildew, the purpose is to reduce the decay caused by microorganisms such as mold and yeast. Ozone rapidly decomposes ethylene to slow down the metabolic process and delay post-ripening and aging. The packaging code of vegetables and fruits is placed in favor of ozone contact and diffusion, and the holes on the side of the carton should be opened.
The air-conditioning warehouse and the air-conditioning account should be piped into the ozone. The natural gas-conditioned plastic bag can be infiltrated with ozone in the silicon window. The plastic bag can be used before and after the air-conditioning. Garlic moss is the vegetable with the largest storage capacity and great value difference. The application of ozone is relatively mature. A number of state-owned and individual depositors have gained experience in preventing mold and decay. Empty library disinfection, especially the old library, underground library disinfection should be highly valued, as long as the ozone disinfection effect can be guaranteed. Incoming pre-cooling sterilization is difficult to establish ozone concentration because the cooling fan is always on. This should be placed in the library at the farthest end of the chiller. The ozone generated at this time is in contact with the surface of the garlic moss by the ventilating air flowing through the chiller, which plays a part of the bactericidal effect. Ozone can be opened all the time before bagging. Due to large storage and air flow, it will not reach the concentration of 2.5ppm. Daily anti-mildew For the air conditioning and air-conditioning accounts, the ozone should be introduced at the same time when adjusting the supplementary air. At this time, an ozone source with moderate pressure and moderate ozone concentration should be used.
The ZSP-G generator developed by Zhankun Company meets this requirement and can input ozone through the pipeline. The small bag can be cleaned by ozone sterilization through the silicon window or the open bag to remove the garlic smell. At this point, note that the generator should be placed in the bag opening area to enhance the sterilization and purification effect. The practical application proves that ozone can strongly inhibit the spread of the moss moss moss, and if it occurs, it can be directly exposed to ozone to make it expand. Fruits such as apples, pears, and grapes have good ozone application, and the intermittent application concentration does not exceed 2.0 ppm without any damage. Ozone and mold-preserving vegetables and fruits remain fresh for a period of time after they are released from the warehouse.
2, mineral water sterilization and quality drinking water sterilization and purification is the longest history of ozone application, the largest application area. At present, the main market of the world ozone industry is still drinking water treatment, and ozonized drinking water has dominated in developed countries such as Europe, America and Japan. The reason is that ozone treatment can achieve a high level of no microbial contamination and no residual chemical pollution. Mineral water is already a large consumption of bottled beverages, and its shelf life depends on the complete killing of microorganisms. The commonly used ultrafiltration and UV disinfection methods are difficult to meet the quality standards. Ozone sterilization is the preferred method, which can completely kill live microorganisms, achieve double zero index, and remove iron and manganese soluble salts in water to preserve beneficial carbon oxides. When the ozone solubility of mineral water is 0.4~0.5mg/l, it can meet the sterilization and quality requirements. The reasonable design is to increase the dosage of ozone by 1.5~2.0g/m3. The solubility of ozone in water increases as the temperature decreases and the pressure increases. Under actual production conditions, the ozone gas concentration is guaranteed to be 10 mg/l.
The contact time between ozone and water is 5~10 minutes, and the gas---water mixed contact can meet the requirements. At present, some manufacturers use 50 grams to 100 grams / hour ozone generator to treat mineral water (water production of 10 cubic meters / hour or less) is irresponsible. First of all, as a source of mineral water that does not have good quality, it does not need so much ozone. (Only sewage can absorb a large amount of ozone due to serious chemical and biological pollution.) Excessive amount of ozone is used as exhaust gas emission, which increases the burden of the capacity of the exhaust gas treatment device. Secondly, it is easy to cause peroxidation of mineral water and produce loss of beneficial trace element components. The installation of ozone equipment in the mineral water filling room to sterilize and purify the air to prevent the contamination of the falling bacteria is very beneficial to manufacturers without air filtration purification equipment. Mineral water plants using ozonation processes often use ozone to disinfect water storage tanks (tanks), pipes, and filters, and are recommended as experience in foreign materials.
3, Qinhuangdao Zhankun Disinfection Equipment Co., Ltd. production ozone generator manufacturers recommended as follows: According to years of practical experience, intermittent use of ozone, food processing plant according to 500m3 space to choose a 3g / h output ozone generator; fruit and vegetable storage capacity to choose a Taiwan 15g / h ozone generator; cold storage disinfection requires a high concentration, can be concentrated on multiple generators continuously boot for more than 48 hours. For the water treatment application, a standard type generator should be selected. Due to the short contact time of water and gas, the ozone concentration is required to reach 10 mg/l or more. Therefore, the standard type generator has an air drying treatment system and has a complicated structure. Mineral water, drinking water and food processing water can be designed according to 1m3 water plus 2.0~2.5g ozone. The generator specification can be selected according to the water volume per hour. Since ozone is heavier than air, the open generator ozone outlet should be selected at a high level to make the ozone diffusion concentration from top to bottom relatively uniform. When installing multiple generators in a workshop, care should be taken to make the ozone concentration uniform and away from the door.
4. Several issues that people care about Ozone as a disinfectant can of course not be used directly by people. It is a principle to isolate people. Many years of theoretical research and practice have proved that the effect of ozone on humans is relatively small in disinfectants. The Ozone Safety Standard is 0.15ppm in the “During Health Standards†formulated by the Ministry of Health of China, and the US and International Ozone Association standards are 8 to 10 hours under 0.1ppm. At these concentrations, anyone will feel the specific smell of ozone, and some people will feel a slight dry mouth. An asymptomatic stimulus zone identified by the study is a curve delineated by the product of ozone concentration versus time. Briefly as follows: 0.5~1PPM contact for 1.5 hours, dry mouth discomfort; 1~2PPM contact for 1 hour, cough, not tired; 2~4PPM contact for 45 minutes, causing strong cough. When these stimuli leave the ozone zone and return to the natural environment, they quickly disappear without leaving symptoms. It has also been found that very few people are sensitive to ozone and react strongly.
After the workshop is disinfected, it is arranged before the shift to work. The storage time of the storage warehouse is staggered with the inspection and shipping time. People even smell the ozone because of the short time and no damage. In the past 100 years since the application of ozone, there has been no incident of ozone poisoning in the world. The impact on foods Ozone sterilization PPM grade, on the surface of the food only produces a very weak oxidation, not enough to affect the internal changes in food. Since ozone is still easily decomposed, the half-life in the air is 20 to 50 minutes, and no residue remains on the surface of the food. China's food and nutrition department has analyzed the nutrients of eggs, apples and persimmons stored in ozone, and compared with the control group, there is no significant difference. The impact on the equipment, although ozone is a strong ozone agent, but the application of concentration in the air is still very low compared to the surface oxidation requirements, not enough to cause significant damage. Practice has proved that the processing workshops and cold storages that have been applied for many years have not found any obvious damage to equipment and devices, and rubber products are removed. Due to the high concentration of ozone in water treatment applications, materials exposed to the ozone should have oxidation resistance.