After calcined water becomes calcium hydroxide, it can kill fish, shrimp, aquatic insects and bacteria and other pathogens. After the fish and shrimp ponds are renovated, select sunny for disinfection of limed ponds. Keep a 4 to 6 cm deep layer of water in the pool so that the lime slurry can be evenly distributed. Use 50-75 kg of quick lime per acre of fish and shrimp ponds. First excavate several small ponds at the bottom of the pool. The number and spacing of the pool should be limited to the whole pool. Next Xiaobian introduced the main components of quicklime and the principle of quicklime antagonism. The main components of lime A kind of gas-hard inorganic gelling material with calcium oxide as the main component. Lime is made from limestone, dolomite, chalk, shells and other high calcium carbonate raw materials, calcined at 900 to 1100°C. Lime is the earliest applied cementitious material in humans. Quicklime has a wide range of applications in civil engineering and can also be used in medical applications in China. For this reason, ancient poetry with lime as the subject matter was chanted throughout the ages. In the hardening process of quicklime, a large amount of water is evaporated, causing a significant shrinkage of the volume and prone to dry shrinkage cracks. Therefore, quicklime should not be used singly. Generally, sand, paper ribs, and hemp blades are used to reduce shrinkage, increase tensile strength, and save lime. Quicklime has strong alkalinity. At room temperature, it reacts with vitreous active silica or activated alumina to produce a hydraulic product that produces cementation. Therefore, quicklime is also an important raw material in the building materials industry. Lime antagonism principle 1, lime exposed to the air for a long time will absorb carbon dioxide into powdered calcium carbonate, will not clear the role of clear pond. Therefore, it is best to buy instant lime, buy lighter, no impurities. If the remaining lime is used up once, it should be sealed and sealed in plastic bags. 2. When the water body is disinfected, quicklime should be added to the hydrated pulp and splashed with heat. Avoid dropping the residue into the pool so as to avoid death of the fish by accidental feeding. Furthermore, the entire lime should not be thrown into the pool to disinfect the water body. 3, quicklime bogey and nitrogen fertilizer application. Otherwise, the ammonia concentration in the water body will increase, and the high ammonia content will cause fish ammonia poisoning. In the same way, when the ammonia nitrogen content in the pool water is higher than 1.2 mg/l, it is also not appropriate to use quicklime in large quantities. In addition, after the application of ammonium nitrogen fertilizer, quicklime can be used after one week and should not be mixed. 4. Quicklime can not be mixed with bleaching powder, strong chlorine and other halogen drugs. Because bleach and other acidic drugs, quicklime is a basic drug, if mixed with acid and alkaline, directly reduce the disinfection effect. 5, quicklime can not be applied simultaneously with trichlorfon. Because lime reacts with water to form calcium hydroxide, under weak alkaline conditions, trichlorfon chemically reacts to form dichlorvos, its toxicity is enhanced by 10 times, and the residual period is greatly extended. 6, quicklime and copper sulfate can not be used simultaneously. The increase of calcium ions in the water body will lead to the reduction of copper ions and greatly reduce the efficacy of copper sulfate. Lime use precautions 1, splash time Generally, the splash time in Quanchipia is appropriate after 10 o'clock in the sunny day or after 3 o'clock in the afternoon. It must be remembered that whether or not there is a floating pond in the morning, quick lime must not be used. However, when the water temperature exceeds 30°C in the summer, ponds with a depth of less than 1m in the pool must be cautious in spilling lime, and in case of abrupt changes in the weather, it is easy to cause drastic changes in the water quality of the pool. Similarly, hot, thunderstorms should not spill lime in the whole pool, otherwise it will cause the occurrence of anoxic pan-pool in the early morning of the next day. 2, spill to be timely Once the quick lime is dissolved with water, the lime slurry will be used immediately. If the open time is too long, the disinfection and sterilization effect will be weakened. When the ammonia content of the pool water is high, cautious lime should be used cautiously. Part of the water should be replaced before splashing. When splashing, it should be divided into small amount and multiple splashes. When the fish is outbreak of infectious disease, lime should be used with caution, and the disease should be treated with drugs. In order to avoid delays in treatment, splashing lime water should be used to filter out slag so as to avoid poisoning caused by fish swallowing. 3, incompatibility Quicklime is a basic drug. It should not be used together with acidic bleaching powder or chlorine-containing or iodine-containing disinfectants. Otherwise, it will produce blemishes and reduce the efficacy. It cannot be used together with trichlorfon to prevent the diptera from encountering alkali hydrolysis to form dichlorvos. The toxicity is increased; it cannot be used together with chemical fertilizers; after applying the above drugs and chemical fertilizers, quick lime must be used for at least 5 days. Editor's summary: The main ingredients of quicklime and the principles of quicklime antagonistic resistance are introduced here, and we hope to help everyone. If you want to know more about yourself, you can follow the information on this site. 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