Sunson Leather Enzyme is developed for leather industry. Soaking enzyme mainly used in soaking, can also be used in combination with other chemical agents. It can be widely used for soaking process in all kinds of dry hide, wet salted hide, fresh hide. Liming enzyme mainly used in liming, can also be used in combination with other chemical agents. Acid bating enzyme suited for all tanning operations in the acid side, such as, Pickling, Acid bating, Wet-Blue reconditioning and so on. Alkaline bating enzyme suited for all skin softening. Remove the non-fibrous proteins and dissoluble proteins. Leather Enzymes,Enzymes For Leather,Enzymes Used For Leather,Enzymes For Leather Industry,Lipase For Leather Sunson Industry Group Co., Ltd , https://www.sunsonchinaenzymes.com
1 Characteristics of water quality management in aquaculture in summer The change in water quality in summer is a continuous process. In the early stage of aquaculture, the biomass in the pond is small, organic matter is few, and the dissolved oxygen is sufficient. The organic matter is under aerobic microbial decomposition and the pond is relatively benign. Ecological balance. With the growth of the breeding period, there are more and more organic matters in the pond. As the water temperature rises, we continue to feed the whole process from the seedlings to the harvest. The fish constantly feed and continuously excrete. Algae continue to grow and die. High breeding density results in excessive feeding. A large number of residual baits, feces and excrement diffuse and dissolve in water and deposit on the bottom of water. Excess feed, fish and shrimp excrement, dead algae, and other dead animals and plants Accumulated in water and cultured daily, these substances accumulate day by day, and the total amount accumulates to a certain extent, resulting in changes in the pH of the water body. The ammonia, nitrite content of the water body rises, the transparency of the water body decreases, the organic matter multiply and the algae As a result of the changes, overall water quality deteriorated and bacterial pathogens developed. The peak of death of a fish disease usually occurs in July-August.
2 Control of Several Key Points in Water Quality Management in Summer Farming
1) pH is an important indicator of water quality pH (pH) is an important indicator of water quality. Aquaculture pH is generally controlled between 7.5 and 8.5. Freshwater aquaculture pH is generally controlled between 6.5 and 9.0. If the pH is too high or too low, it will have direct damage to aquaculture animals and even cause death. Water with a pH of less than 6.5 can lower the pH in the blood of aquaculture animals, weakening their ability to carry oxygen in blood and causing aquaculture animals to suffer from physiological anoxia. Despite the high dissolved oxygen in the water, aquaculture animals such as fish and shrimps often float their heads. If the pH value is too high, the water may corrode the tissues of the fish and shrimps, causing the fish and shrimps to lose their breathing capacity and die in large numbers.
2) Dissolved Oxygen is the Life Factor of Aquaculture Animals Aquaculture animals need to breathe oxygen in water, and oxygen deficiency can cause them to float. Severe lack of oxygen can also cause death of aquaculture animals. The dissolved oxygen in the aquaculture waters of fish, shrimp, and crab aquaculture animals should be maintained at 5 to 8 mg/L, and should be kept at least 4 mg/L. Mild oxygen-deficient fish and shrimps do not die, but fish and shrimp appear irritated, breathing fast, the growth rate of fish and shrimp will slow down; too high dissolved oxygen in water will cause fish and shrimp to suffer from bubble disease.
3) Control of the toxicity of ammonia nitrogen The ammonia nitrogen in aquaculture mainly comes from the bait, excreta of aquatic animals, fertilizers, and animal and plant remains. The toxicity of ammonia to aquatic animals varies according to their concentration. At low concentrations of 0.01 to 0.02 mg/L, aquatic animals can chronically poison and inhibit their growth; at concentrations of 0.02 to 0.05 mg/L, ammonia can Other causes of aquatic animal diseases have a common additive effect that accelerates their death. At a high concentration of 0.05 to 0.2 mg/L, they damage the skin, stomach, and intestine mucosa of aquatic animals, resulting in surface and internal organs. Bleeding; At a lethal concentration of 0.2 to 0.5 mg/L, aquatic animals will die of acute poisoning.
Measures to prevent high concentration of ammonia nitrogen in aquaculture water: Clear ponds and dredging during the initial stage of breeding; Establish a reasonable stocking density according to the actual bearing capacity of the water body; Choose appropriate feeds, and reasonably feed baits to avoid bait waste and bait accumulation Deterioration of water quality due to spoilage; early attention to the use of organic fertilizer when fertilizing and watering; frequent activation of aerators to promote the natural conversion of bait and reduce accumulation; use appropriate amount of zeolite powder to improve sediment, absorb ammonia nitrogen, , Degradation of organic matter; In order to prevent the non-ionic ammonia in the aquaculture water area is too high, in addition to the indicators of regular detection of water in the water, but also promptly clean up the removal of the bottom of the aquaculture waters and aquaculture animals excreted excrement and other measures.
4) Nitrosonitrogen is a key factor in triggering fish diseases Nitrite is an intermediate product of ammonia in the process of converting to nitrate. The process of converting ammonia into nitrate is hindered, and the nitrite of the intermediate product will be Accumulated in water. The presence of nitrite in the aquaculture waters makes it possible for the ferrous hemoglobin in the blood of fish, crabs and crabs to be oxidized to methemoglobin, thereby inhibiting the oxygen carrying capacity of the blood. Fish, shrimp, and crabs are exposed to high concentrations of nitrite in water for a long time and yellow blood disease can occur. Nitrite in water should generally be controlled below 0.1 mg/L.
When nitrite is too high, only slow water changes and good water application can be used. Then take the liver protection medicine or fish multidimensional for a week, increase anti-stress ability and degrade blood nitrite.
Treatment of nitrite: Displace water, mainly to reduce the concentration of nitrite and discharge some garbage. So it is best to drain the bottom of the water, discharge the sewage; disinfection and zeolite powder for sucking. The necessary bactericidal treatment is performed first to use a bactericidal disinfectant that stimulates a small effect, and then the natural zeolite powder is used for sucking again the next day.
5) Treatment of poor water color The main cause of water whitening is that in the early stage of culture, due to excessive zooplankton or a large number of deaths of phytoplankton, a single cell algae cannot grow normally. In this case, if the content of ammonia nitrogen or nitrite in the water is too high, ammonia-removing water purifying agents such as zeolite powder and aluminum chloride should be used first, and the feed should be controlled or stopped at the same time until most of the zooplankton are ingested. After death, some fresh water is introduced and live biological fertilizer is applied to carry out fertilizer and water. In the middle and later stages of breeding, due to weather changes, abnormal algae deaths are caused. During the middle and later stages, the oxygen consumption of fish and shrimp is large, and the amount of feed is large. The degradation and conversion processes of excrement and residual feed require large amounts of oxygen, and planktonic unicellular algae Unnatural death will lead to deterioration of water quality. In this case, the first step is to open the aerator, then drain part of the bottom water and introduce some new water. Use ammonia-removing water purifiers in time and oxygen booster to relieve the lack of oxygen. At the same time, use the hydrolases to decompose the algae. The use of photosynthetic bacteria to decompose small molecules of organic matter and ammonia nitrogen, nitrite, hydrogen sulfide and other harmful substances, and then sprinkle the fertilizer to restore the normal growth of algae. Due to the sudden change in water quality, fish or viscera of live fish often suffer varying degrees of damage. When eating normally, they should be fed with health-care baits such as vitamins and allicin to promote the recovery of damaged organs. After a sudden change in water quality, the growth rate of farmed fish is significantly reduced and the anti-stress ability is reduced. Most of them require a week to recover, so water changes should be avoided as much as possible.
Sunson group provides Lipase, Protease, Alkaline Lipase, Acid Lipase For Leather industry.
Benefits:
The effectiveness is tender, balanced. Effectively improve the pliability and fullness of the leathers, increase the yield of leather output. When used in Wet-Blue reconditioning, it promotes the absorption of tanning agent and improve the dyeing uniformity, it has very good permeability, evenly soften effect can be obtained. Its use will not lead to loose grain on leather.
This product should be stored in a cool and dry place in sealed container, avoiding insolation, high temperature and damp. The product has been formulated for optimal stability. Extended storage or adverse conditions such as higher temperature or higher humidity may lead to a higher dosage requirement.
Enzyme preparations are proteins, which may induce sensitization and cause allergic type reactions in sensitized individuals. Prolonged contact may cause minor irritation for skin, eyes or nasal mucosa, so any direct contiguity with human body should be avoided. If irritation or allergic response for skin or eyes develops, consult a doctor.
Water quality regulation technology for summer fish ponds
Aquaculture raises fish first, and good water raises fish. In recent years, with the improvement of the degree of eutrophication in aquaculture, the water quality has also worsened, and the number of difficult diseases has increased. Water quality management has become the most concerned issue for farmers.
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