| At present,the breeding techniques of Macrobrachium rosenbergii are basically adopted by traditional artificial breeding techniques and methods,and there is no strict uniform operation standard.The method of seedling water treatment and regulation is simple.In order to keep the nursery pond water quality is often used a lot of water exchange method,the disease prevention and treatment of antibiotics,random will contain a large number of eutrophic bait and antibiotic fertilizers without any treatment into the adjacent natural waters,not only a waste of water resources,The waters are seriously affected by eutrophication and other pollution.The traditional techniques and methods of artificial breeding are obviously not suited to the development of modern aquatic industry in China.In view of the Macrobrachium rosenbergii easy to support,disease resistance and other characteristics,in recent years,Macrobrachium rosenbergii farming in China’s Gaoyou City,Jiangsu Province and other regions have developed into a local pillar industry.Therefore,the vast majority of aquatic products market and breeding area requires a large number of Macrobrachium rosenbergii seed,obviously the transformation of traditional seed cultivation techniques and methods to improve seedling yield and quality is a top priority.To this end,we must first solve its core problem,that is the development of nursery water purification and reuse of technology and equipment,to design and structure of the mobile rosewood nursery circulating water treatment machine(referred to as water treatment machine),the use of nursery Indicating that the nursery pool water can be effectively recycled and reused,and get a good nursery effect.The design,structure and application effect of mobile circulated water treatment machine of Macrobrachium rosenbergii are as follows:(1)the key equipment for water treatment machine for the solid-liquid separator,UV lamp sterilizer and mesh bio-filter three parts,and the pump can be placed in the nursery room can be moved on the trolley.Design maximizes the rational use of trolley limited space and achieves proper efficacy.To remove the larger particles of nursery water,solid-liquid separator selection filter easy to clean and replace the cylindrical filter(Φ23.5cm,H86 cm,the United States).Built-in four parallel UV lamp(55W×4)stainless steel cylinder sterilizer(Φ16cm,H95cm)vertical car,lamp and cylinder for the removable,easy to clean.(L55cm×W40cm×H96cm)The shell is made of polypropylene plastic,nylon rope made with diamond-shaped hole(L5cm)mesh(L90cm,W50cm),the mesh side of the implanted micro-organisms attached to the polypropylene wire Filter,a total of 10 mesh hanging into the filter inside the rectangular frame,filter with a good ammonia and nitro nitrogen removal function.Nursery water into the processor in the order of flow: solid-liquid separator → UV lamp sterilizer → biological filter.Water flow to the design principle is to avoid excessive water turbidity affect the UV lamp sterilization intensity and ultraviolet light to kill the biological filter within the beneficial bacteria.Water processor Trolley optimization specifications are L110cm×W55cm×H100cm.(2)For ease of operation,labor saving reduced labor intensity,the water processor is designed with an intelligent timer mounted on the stainless steel housing door of the processor.Timer features with automatic performance,according to set the time to automatically start and shut down.Its composition includes STC15F2K60S2 series MCU,LCD12864 liquid crystal display module,DS1302 clock chip,relay,4x4 matrix keyboard,power module.The progra m control cycle is set to 24 days according to the nursery cycle.Water treatment machine is still equipped with a flow control out of the flow meter,according to the need to adjust,control the flow of water.The water quality of the two mobile rotaviruses was studied in the whole cycle nursery water cycle,and the water quality indexes of the experimental pool were significantly better than those of the control pool.The main water quality indexes such as ammonia nitrogen and nitroso nitrogen were controlled in larval development The range of water quality of the experimental pool was as follows: suspended solids,ammonia nitrogen and nitroso nitrogen: 0.43-1.24 TU,0.446-1.217 and 0.002-0.518mg/L,the removal rate: 9.8-70.1%,30.1-60.3% And 0-47.9%,the corresponding indicators of the control of water quality control of the corresponding indicators were 0.42-2.14 TU,0.449-2.983 and 0.002-1.085mg/L.The average removal rates of bacteria and vibrians were 92.3-93.9% and 100%,respectively.And were controlled in the larval safety range,so the larvae development metamorphosis and vigor are stronger than the control pool,the emergence rate of 46.2-55%,much higher than the control pool(28-35%).It can be used in the design and construction of mobile rosewood Macrobrachium seedling circulating water treatment machine which can be used for the recycling of nursery stock of Macrobrachium rosenbergii.This study was pre-designed to manufacture a simple recycling water treatment machine prototype products,and try to deal with the cycle of broodstock overwintering water,get a good effect of water purification.On the basis of this,the above-mentioned optimized water treatment machine was further designed and constructed.It is not only effective in the reuse of waste water,to reduce the disease,to improve the quality and yield of the seedling,but also to save water resources and to benefit the environmental protection.It is not only effective for the treatment of waste water,The development of shrimp farming industry is of great significance. |
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