Catalyst refers to a substance which can change the reaction speed in a chemical reaction and whose composition and mass remain unchanged after the reaction. The catalysts that speed up the reaction are called Positive Cata-lyst and the slower ones are called Negative Cata LYST or moderators. Generally speaking, the catalyst is to correct the catalyst. These catalysts are widely used in industry, especially in organic chemical industry. They are of great significance, for example, catalysts are needed for the preparation of sulfuric acid by contact method, the hydrolysis of synthetic ammonia, esters and polysaccharides, and the hydrogenation of oils and fats. Commonly used catalysts are metals, metal oxides and inorganic acids. If the catalyst is a solid, the reactant is a gas, forming a heterogeneous catalytic reaction, this catalyst, sometimes called a catalyst or contact agent.
Auxiliaries refer to the industrial and agricultural production, especially chemical production, in order to improve the production process, improve product quality and output, or give the product a unique application performance, usually need to add some auxiliary chemicals. It is a kind of important auxiliary raw materials in chemical production, which can give the products special properties and improve the use of finished products, accelerate the chemical reaction speed and improve the yield of products, save raw materials and improve the processing efficiency. It is widely used in chemical industry, especially in organic synthesis, synthetic material processing and petroleum refining, pesticides, pharmaceuticals, dyes, coatings and other industrial sectors. By use, it can be divided into synthetic auxiliaries and processing auxiliaries. Auxiliaries used in the synthesis and polymerization of resins, fibers, rubber and other monomers are called synthetic auxiliaries, including catalysts, initiators, solvents, dispersants, emulsifiers, polymerization inhibitors, regulators, terminators, etc. Auxiliary chemicals used in the manufacture of rubber, plastic products and in the spinning and spinning of chemical fibers are called processing aids, including plasticizers, heat stabilizers, antioxidants, light stabilizers, flame retardants, foaming agents, lubricants, demoulding agents, vulcanizing agents, accelerators, softeners, anti-scorching agents. Agents, surfactants, oils, fillers and so on. Many of these Additives are dangerous chemicals, such as diphenyl peroxide, azodiisobutyronitrile, hydrogen peroxide-ferrous blue, alkyl aluminum, titanium chloride and other initiators, catalysts are inflammable and explosive materials, should be stored and transported in accordance with the relevant provisions of the Regulations on the Safety Management of Chemical Hazardous Goods. Management and use.
Dyeing Auxiliaries,Dimethyl Silicone Oil,2-Phenoxyethanol 99%,Sodium Prop-2-Ene-1-Sulfonate Shandong Chenyi Environmental Protection Technology Co.,Ltd , http://www.chenyichem.com
I. Fish pond preparation
The nursery ponds are fry and fingerling ponds, respectively. Frying ponds can be several square meters or dozens of square meters. The water depth is about 1.0 meters. The pool is of cement structure, and some pebbles can be laid at the bottom of the pool for fish seedlings to inhabit. In addition to the use of fry pool fish breeding, but also use the mud pool cultivation. Adult fish ponds are suitable for 5 to 10 mu. They require a depth of 2 meters or more, ventilation, smooth slope, and convenient drainage and drainage. Drainage facilities are equipped with 3 holes in the middle and lower, the upper hole put deep water, the hole in order to change the water quality, the next hole to dry the pool. During the intense summer sun, adult fish ponds should be partially shaded. The fry and fingerlings were drained in the first half of the month, and 60-75 kg of lime were thrown into the pool for thorough disinfection. The bacteria was killed and the field was cleared. After 5 days, the water was poured into the pool and the seed was ready after 15 days.
Second, fry cultivation
1. After hatching for 7-8 days, the larvae are fully cast in water, and after 1 month they will increase the amount of terrestrial earthworms or compound feed. The micro-fluid water is often kept in the cement pool; the mud pool is not regularly filled with fresh water, and the water level gradually deepens as the fish body increases, and fish disease and sewage are regularly prevented. During the fry period, it is fed 3 times a day, and the daily feeding amount is 5% to 10.4% of the body weight. The seed period is once a day, and the daily feed amount is 4% to 9.3% of the fish's body weight.
2, with leeches as seed food, fast growth, good effect, ideal. Terrestrial salmon breeding fish species, the disadvantage is that the effective part of the food less, low utilization. It has been determined that terrestrial carp muscles account for 48.5% of body weight and intestinal sediments account for 40.6%. Feeding at the initial stage of fish species can cause indigestion. It is difficult to rely solely on the source of live baits. Therefore, it is necessary to broaden the sources of feed and seek nutritious compound feeds.
3, the production of water should be fresh, high dissolved oxygen, invincible pests, no toxins. Otherwise, it will affect the survival rate of fish species.
4. Long-knot fish are warm-water fish. When the water temperature is between 24 and 28°C, they grow fast. When the water temperature drops below 20°C, the growth slows down. Where conditions permit, if the use of factory waste heat or artificial temperature control in the 24-28 °C range running water feeding, then the fish can reach the commercial fish size (0.25 ~ 0.5 kg / tail).
Third, adult fish breeding
1. Seed Stocking: Liquor disinfecting with quicklime prior to critical stocking. Stocking densities range from 3 to 4 tails per square meter. This can achieve a larger rate of weight gain. If the fish were reared in different pools for 1 year, a larger body weight could be obtained, but during the wintering period of about 5 months, the growth period was long, and the amount of bait required was large and uneconomical.
2. Feed and feeding management: The fed baits are mainly of terrestrial carp, water fleas and loach, all of which are fed directly with fresh ones, 1 or 2 times a day, and the average daily feeding amount accounts for 2% of the fish's body weight. ~4.6%. The daily dose is calculated by the end of the month. Drain the sewage once a day, and prevent the disease at the beginning of each month for 3 consecutive days. In the high temperature of July-August, sewage is discharged once every half month.
Fourth, cage culture
1. Production and installation of cages: production of cages, using polyethylene mesh, making into a double-layer cage, dense inside and outside, according to the specifications of the self-supporting species, determine the size of the mesh, generally not to escape the fish, The specifications of cages are generally 4m 7m 2m, 4m 6m 2m, 5m 5m 2m and so on. After the cages are made, they should be soaked with 1% bleach for a day and night, and then the cages should be hung over the surface of the water. The fish should be released after about half a month.
2, fish feeding and feeding management: fish species box (3 meters 5 meters 2 meters) per box can raise 5 centimeters of fish species of 1000 tail, set up two bait in the two pairs of bait, bait set under the color tape 11 meters In the bottom corner of the box, the other two corners are easy to hang and prevent disease. When the fish species reaches 8 to 10 cm, the bait station may be taken out, and then a 1.5 m 1.5 m color tape or dense mesh cloth may be set at the bottom of the box as a bait station. The adult fish box (4m 6m 2m) can raise 50 to 150g of 800 to 1000 fish per box, and the method of feeding is the same as that of the fish seed box. Feeding twice a day, 9:00 am, 4:00 pm to 5:00 pm, depending on the growth of fingerlings and adult fish, the amount of baiting needs to be increased. Fish feeds need to have higher protein content (such as dip and soft-shelled turtle). Material can be). Adult fish food can be prepared by themselves, the main raw materials are: fish meal, starch, cakes, inorganic salts, trace elements, vitamins, animal and vegetable oils.
Fifth, fish disease prevention
1, fish ponds, fishing gear must be thoroughly disinfected before use, the general fish pond with fish safety 30 mg / liter, quicklime 30 ~ 60 mg / liter, bleach 20 mg / liter, etc. Quanchiposa, 1 week to 10 days after use. The fishing gear can be sterilized with 10010-6 formalin, 2 mg/l furazolidone, and 20 mg/elevated potassium manganate. Insecticides can be soaked for one day. Or to expel all kinds of fishing gear in the sun for several days can also achieve the purpose of eliminating various pathogens.
2. Before the fingerlings are in the pool, routine fish examinations should be carried out, followed by dipping with 20mg/L furazolidone for half an hour or dipping with 2% salt for 10 minutes into the fishpond.
3, in the feeding process, we must strengthen management: (1) the stocking density of fish can not be too large, according to the size of the fish in a timely manner to separate the pond, to prevent the long-risk fish dangerous life-intensive one piece often fight, bite, Puncture phenomenon. (2) The water quality should be kept clean, it is best to use the running water method to fish, and the residual baits and excrement should be promptly removed. The dissolved oxygen should not be less than 4 mg/L. (3) Live feed (such as leeches) must be soaked with insecticides and bactericidal drugs before feeding. (4) When there is a slight fish disease, immediately check the pathogens and eliminate the fish disease at the initial stage.
4, cage culture is generally not used to spread the drug to prevent fish disease (only for environmental disinfection), but the use of baits to prevent fish disease, fish species monthly baits 2 times, each for 4 consecutive days; adult fish monthly The bait was administered once for 6 consecutive days. The cage culture is most suitable for hanging fish (bags) in the box to prevent fish diseases, and the methods of hanging the bags (bags) and bait mixing are the same as those for pond culture.
Sixth, fish maw processing
The long-knit quail not only grows thick and plump, but it is full of collagen. It is an advanced tonic. It is also known as the bird's nest and shark's fin. It is also a famous treasure on the Chinese and foreign markets.
When preparing the fish maw, first remove the long-shouldered fish, cut off the blood vessels attached to it, and then dry or dry it with a tiling. Serve as a maw. However, it should not be exposed to heat and high temperature baking.
Before eating, it is necessary to raise the dried fish belly. There are two methods: water and oil. The water is simple, and it is splashed in boiling water and it is often turned. Oil is made by putting fish maw in a warm oil pan, pressing it in the oil with a spoon, turning it from time to time, and making it evenly heated inside and out. Note that the oil temperature should not be too high, so as not to send outside the coke. When the fish's belly is inflated and becomes hard and crunchy, it can be removed. Such as cooking, put in 50 °C warm water bubble; such as soup, you can dry, cook the soup pot, add ham, mushrooms, green beans and other stew together.
The long kiss, commonly known as the Jiang Tuan, the fat pupa (Huainan caliphate), is a large-scale expensive fish species. The meat is delicate, without thorns and body scales, so it is regarded as a treasure in freshwater fish. Due to the declining natural resources in recent years, the majority of consumers only smell their names, but they do not see their own things, but they do not have any taste. Therefore, the artificial propagation and breeding of the long-knot fish crisis can meet the market demand, and it can also be exported for foreign exchange, with good economic and social benefits.