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In a recirculating aquaculture system the culture water is purified and reused continuously. A recirculating aquaculture system is an almost completely closed circuit. The produced waste products; solid waste, ammonium and CO2, are either removed or converted into non-toxic products by the system components. The purified water is subsequently saturated with oxygen and returned to the fish tanks. By recirculating the culture water, the water and energy requirements are limited to an absolute minimum. It is however not possible to design a fully closed recirculating system. The non-degradable waste products must be removed and evaporated water must be replaced. Still our recirculating systems are capable of reusing 90% or more of the culture water. To ensure good water purification, recirculating systems consist of a number of components with specific functions. See detailed explanation on RAS technology below. Both system are perfectly capable of removing the ammonia from the system water. The choice of biological filtration is depending on many factors (e.g. available space, outside temperature, energy costs, etc.)

Fast traslate Icon translate Yixing Holly Technology is a domestic forerunner in producing environmental equipments and parts used for sewage treatment. Below are some pictures of recent shipments:tube selttler media and bio filter media ln line with the principle of Customer first", our company has developed into a comprehensive enterprise integrating production, trading, design and installation service of sewage treatment equipments. After years of exploring and practices, we have built up complete and scientific quality system as well as perfect after-sale service system.At present, over 80% of our products export more than 80 countries, including Southeast Asia, Europe, North America, Latin America, Africa .. For years, we have gained most of our customers` trust and welcome from home and abroad. Our main products including: Dewatering screw press, Polymer dosing system, Dissolved air flotation(DAF) system, Shaftless screw conveyor, Machanical bar screen, Rotary drum screen, Step screen, Drum filter screen, Nano bubble generator, Fine bubble diffuser, Mbbr bio filter media,Tube settler media, Oxygen generator, Ozone generator etc. Tube settler is very suitable in all different clarifiers and removing sand. It is regarded as universal water treatment equipment in water supply and drainage engineering. It has wide application, high handling efficiency, small area, etc. It is suitable in removing sand in inlet, industry and drinking water precipitation, separation in oil & water. The modular and cubical self-supporting settler design of Honeycombed Inclined Tube Settlers aids handling during installation and any subsequent maintenance. 1mm black PP lamella clarifier tube settlers media for sewage water treatment design avoids thin wall membranes and utilizes forming techniques to minimize component stress and subsequent environmental stress cracking fatigue. 1mm black PP lamella clarifier tube settlers media for sewage water treatment offers an inexpensive method of upgrading existing water treatment plant clarifiers and sedimentation basins to improve performance. They can also reduce the tankage/footprint required in new installations or improve the performance of existing settling basins by reducing the solids loading on downstream filters.

Some pictures of recent shipments Yixing Holly Technology is a domestic forerunner in producing environmental equipments and parts used for sewage treatment. Below are some pictures of recent shipments:tube selttler media and bio filter media ln line with the principle of Customer first", our company has developed into a comprehensive enterprise integrating production, trading, design and installation service of sewage treatment equipments. After years of exploring and practices, we have built up complete and scientific quality system as well as perfect after-sale service system.At present, over 80% of our products export more than 80 countries, including Southeast Asia, Europe, North America, Latin America, Africa .. For years, we have gained most of our customers` trust and welcome from home and abroad. Our main products including: Dewatering screw press, Polymer dosing system, Dissolved air flotation(DAF) system, Shaftless screw conveyor, Machanical bar screen, Rotary drum screen, Step screen, Drum filter screen, Nano bubble generator, Fine bubble diffuser, Mbbr bio filter media,Tube settler media, Oxygen generator, Ozone generator etc. Tube settler is very suitable in all different clarifiers and removing sand. It is regarded as universal water treatment equipment in water supply and drainage engineering. It has wide application, high handling efficiency, small area, etc. It is suitable in removing sand in inlet, industry and drinking water precipitation, separation in oil & water. The modular and cubical self-supporting settler design of Honeycombed Inclined Tube Settlers aids handling during installation and any subsequent maintenance. 1mm black PP lamella clarifier tube settlers media for sewage water treatment design avoids thin wall membranes and utilizes forming techniques to minimize component stress and subsequent environmental stress cracking fatigue. 1mm black PP lamella clarifier tube settlers media for sewage water treatment offers an inexpensive method of upgrading existing water treatment plant clarifiers and sedimentation basins to improve performance. They can also reduce the tankage/footprint required in new installations or improve the performance of existing settling basins by reducing the solids loading on downstream filters.

Established in 2007, Holly Technology is a domestic forerunner in producing environmental equipments and parts used for sewage treatment. ln line with the principle of Customer first", our company has developed into a comprehensive enterprise integrating production, trading, design and installation service of sewage treatment equipments. After years of exploring and practices, we have built up complete and scientific quality system as well as perfect after-sale service system.

According to the size of the screen, bar screens are divided into three types: coarse bar screen, medium bar screen and fine bar screen.According to the cleaning method of bar screen , there are artificial bar screen and mechanical bar screen. The equipment is generally used on the inlet channel of sewage treatment or the entrance of the lifting pump station collection basin. The main function is to remove the large suspended or floating matter in the sewage, so as to reduce the processing load of the subsequent water treatment process and play a Protect water pumps, pipes, meters, etc. When the amount of intercepted grid slag is greater than 0.2m3/d, mechanical slag removal is generally adopted; when the grid slag amount is less than 0.2m3/d, the coarse grid can adopt manual slag cleaning or mechanical slag cleaning. Therefore, this design uses a mechanical bar screen. The mechanical bar screen is the main equipment for the first process of sewage treatment in the sewage treatment plant, which is the main equipment for pretreatment. It plays a pivotal role in the subsequent process. The importance of water treatment structures for water supply and drainage projects is increasingly recognized by people. Practice has proved that the selection of the grille directly affects the operation of the entire water treatment implementation. The artificial grille is generally used in small sewage treatment stations with simple structure and high labor intensity. Mechanical coarse grids are generally used in large and medium-sized sewage treatment plants. This type of grid has a more complex structure and a higher degree of automation. Established in 2007, Holly Technology is a domestic forerunner in producing environmental equipments and parts used for sewage treatment. ln line with the principle of Customer first", our company has developed into a comprehensive enterprise integrating production, trading, design and installation service of sewage treatment equipments.

In the large sewage treatment equipment, before starting and using the equipment, sufficient preparations must be made so that the equipment can operate well, especially during the operation of the air floatation machine to avoid other problems. It can be applied to include Industrial wastewater, domestic wastewater, etc., professional wastewater treatment equipment manufacturers, with their own basic and technical advantages, continue to develop various types of water treatment support equipment, combined with the user`s actual situation, for reasonable installation and use, Therefore, corresponding design must also consider the standard and reference requirements for the installation and use of supporting components. In the process of selecting the application, it should be reasonably selected according to the actual situation of the user enterprise, and the water flow should be more seamlessly connected during the use of the equipment, including the installation and use of a variety of specifications model air flotation machine, the equipment can be based on Installation and testing are carried out in real conditions, and the overall operation is carried out. Through effective combination and matching applications, and operation through modern intelligent control systems, automated operation requirements can be effectively realized. At present, in the use or management of air flotation machines in large enterprises, if the user`s own equipment is not flexible enough and management is inconvenient, it will directly affect the overall productivity, especially the enterprise needs to consume a lot of manpower and time, so pay attention to simple and flexible operation The equipment is also the value equipment selected and used by enterprises, which effectively meets the choice and use of different users. Yixing Holly Technology Co., Ltd. is a manufacturer that mainly produces integrated sewage treatment equipment, air flotation machines, and rural domestic sewage treatment. Please call for consultation!

Screw press sludge dewatering machine is widely used in paper mills wastewater treatment. The treatment effect in the paper industry is very significant. After the sludge is filtered through spiral extrusion, the water is filtered out from the gap between the moving and static rings, and the sludge is squeezed out from the The sludge outlet is discharged to complete the sludge treatment of papermaking wastewater, and then undergo advanced treatment or outbound treatment. The screw press sludge dewatering machine is widely used, and can be used by large paper groups, paper companies, printing, dyeing and printing plants, etc. There are countless use cases of screw stacking machine in the paper industry. The daily processing capacity is very large, the water output is clear, and the mud output is large. Users praise: the screw stacking machine is very easy to use, saves electricity and water, saves money and labor. It runs automatically every day without being supervised. It can be operated, which is very convenient. The screw press sludge dewatering machine in paper mill wastewater has not only promoted the rapid economic development of the paper industry, but also solved the worries of waste water treatment for user enterprises, and spread the influence and use effect of screw press sludge dewatering machine. More companies and users are aware of the existence of screw press sludge dewatering machines, and the iconic equipment of the environmental protection industry has solved the sewage treatment problem for the paper industry. Established in 2007, Holly Technology is a domestic forerunner in producing environmental equipments and parts used for sewage treatment. ln line with the principle of Customer first", our company has developed into a comprehensive enterprise integrating production, trading, design and installation service of sewage treatment equipments.

ADVANTAGES OF RECIRCULATING AQUACULTURE SYSTEM The advantages of farming in RAS are: Fully controlled environment for the fish Low water use Efficient energy use Efficient land use Optimal feeding strategy Easy grading and harvesting of fish Full disease control CONSTRAINS OF RECIRCULATING AQUACULTURE SYSTEMS To allow the use of RAS grow outs, there are a few constraints in respect of infrastructure, feeds and staff: Necessity for electricity 24/7 Good water source, preferably borehole Good fish feed quality, preferably high protein and fat extruded diets with high digestibility Technically skilled staff able to work in a medium tech environment Recirculating Aquaculture System grow outs are the best option for locations close to or in cities, with good availability of electricity. Next to this, using RAS technology is the only possibility for farming tropical fish species in moderate to cold climates indoor. BASIC PRINCIPLES OF A RECIRCULATING AQUACULTURE SYSTEM A basic Recirculating system consists of the following components: Fish tank Mechanical Filter Biologicial Filter Pump tank Pump Other items (e.g. UV-C light, oxgenation devices, aeration devices, feeders, monitoring, etc.)

Customized Agriculture Drum Filter Screen

In the large sewage treatment equipment, before starting and using the equipment, sufficient preparations must be made so that the equipment can operate well, especially during the operation of the air floatation machine to avoid other problems. It can be applied to include Industrial wastewater, domestic wastewater, etc., professional wastewater treatment equipment manufacturers, with their own basic and technical advantages, continue to develop various types of water treatment support equipment, combined with the user`s actual situation, for reasonable installation and use, Therefore, corresponding design must also consider the standard and reference requirements for the installation and use of supporting components. In the process of selecting the application, it should be reasonably selected according to the actual situation of the user enterprise, and the water flow should be more seamlessly connected during the use of the equipment, including the installation and use of a variety of specifications model air flotation machine, the equipment can be based on Installation and testing are carried out in real conditions, and the overall operation is carried out. Through effective combination and matching applications, and operation through modern intelligent control systems, automated operation requirements can be effectively realized. At present, in the use or management of air flotation machines in large enterprises, if the user`s own equipment is not flexible enough and management is inconvenient, it will directly affect the overall productivity, especially the enterprise needs to consume a lot of manpower and time, so pay attention to simple and flexible operation The equipment is also the value equipment selected and used by enterprises, which effectively meets the choice and use of different users. Yixing Holly Technology Co., Ltd. is a manufacturer that mainly produces integrated sewage treatment equipment, air flotation machines, and rural domestic sewage treatment. Please call for consultation!

With the continuous enhancement of national requirements and treatment efforts for environmental protection, the whole treatment requirements of wastewater treatment in the iron and steel industry should also be carried out in accordance with strict standards, and the sludge treatment stage is continuously strengthened. At present, sludge dewatering has become an important part of wastewater treatment in the iron and steel plant, which has become more and more important. The centrifugal sludge dehydrator can ensure that the waste gas does not overflow, the sewage does not flow out, the sludge does not land, the degree of automation is high, the number of vulnerable parts is small, the drug consumption is small, it is convenient for continuous operation, and the operation cost is low. The advantages of using the centrifugal sludge dehydrator to carry out the sludge dehydration are gradually emerging, and the use of the centrifugal sludge dehydrator is gradually on the rise Head. The centrifugal sludge dehydrator, also known as the horizontal screw discharge settling centrifuge, relies on the density difference of solid-liquid two phases, under the action of centrifugal force field, to accelerate the settling speed of solid particles to achieve solid-liquid separation. A cone section is designed in front of the drum, which rotates at a high speed according to different sewage properties and the set speed. Under the action of centrifugal force, the sludge entering the centrifuge first achieves the stratification effect on different circular interfaces due to the different density of solid phase and liquid phase; then, the solid phase is gradually pushed to the outlet of solid phase by the screw in the machine, and under the action of centrifugal force and the extrusion force of the two-way extrusion section at the end, achieves the dry effect, and is discharged from the outlet; the liquid phase is gradually stratified When it is stable and accumulates more and more, the clarified supernatant flows out through the overflow weir to the outlet of the liquid phase and out of the machine. The running speed of the drum directly determines the separation factors. Generally speaking, the rotating speed is high, the separation factor is large, and the moisture content in the solid is low. The speed difference of the screw directly affects the moisture content of the solid transferred outside the drum, which has a direct impact on the treatment capacity, residence time and solid discharge.

MBBR Bio Filter Media Bio filter media, used in Integrated Fixed-lm Activated Sludge (IFAS) and moving bed biofilm reaction (MBBR) system.The wastewater goes through suspending media of MBBR reactor, forming biological membrane on the surface of media gradually. With the action of microbial on the biological membrane, wastewater is purified. MBBR media can move freely in the reactor with the mixing of the water. For the aerobic reactor, the aeration will make the media move; for the anaerobic reactor, mechanic mixing will make the media move. Our MBBR media is new-developed media, has better treatment effect compared with traditional media.

MBBR Bio Filter Media Bio filter media, used in Integrated Fixed-lm Activated Sludge (IFAS) and moving bed biofilm reaction (MBBR) system.The wastewater goes through suspending media of MBBR reactor, forming biological membrane on the surface of media gradually. With the action of microbial on the biological membrane, wastewater is purified. MBBR media can move freely in the reactor with the mixing of the water. For the aerobic reactor, the aeration will make the media move; for the anaerobic reactor, mechanic mixing will make the media move. Our MBBR media is new-developed media, has better treatment effect compared with traditional media.

Our aeration disc diffusers for sale and more have a worldwide reputation of precise engineering, innovative design, and dependable performance. Let our global service network support you 24 hours a day, seven days a week. Our aeration disc diffuser replacements have industry-standard models compatible with a variety of brands.

Dissolved Air Flotation Though dissolved air flotation (DAF) has been used for drinking water clarification in Europe since the late 1960s, it is still somewhat new or unknown to many drinking water treatment professionals in North America. Wastewater treatment professionals, however, do recognize DAF as a well-established sludge thickening process that's also proficient at removing oil and grease from industrial wastewater. DAF is an alternative clarification process that uses micro air bubbles to attach and float flocculated particles and suspended solids to the water surface for removal (see Fig. 1). In contrast, sedimentation removes settled solids from the bottom.

Recent Shipment Of Nano Bubble Generator

WHAT IS NANO BUBBLE GENERATOR A nanobubble generator or as it should be called according the ISO standards, an ultrafine bubble generator is a device that mixes water and a gas and produces nanobubbles. Nanobubbles should be smaller than 200 nano meter to be called a nanobubble. Since 200 nano meters is quite large to be called nanoscopic the name nanobubbles is not completely appropriate. For this reason, the ISO has named a nanobubble and ultrafine bubble. The naming convention follows the same names as for particles.

WHAT IS DRUM FILTER SCREEN which is also called drum screen,is suitable for the solid-liquid separation of industrial wastewater and domestic sewage. It can remove the waste solid whose size is more than 0.2mm.The effluent enters the inside of rotary drum through the feed inlet and then passing over the distribution weir on to the drum surface.The particles and water separate as the drum rotates with the solids staying on the screen and passing down the space of the drum .

Domestic sewage is mainly various detergents and sewage, garbage, feces, etc. used in urban life. Most of them are non-toxic inorganic salts. Domestic sewage contains nitrogen, phosphorus, sulfur, and many pathogenic bacteria. The source of domestic sewage? Domestic sewage is the waste water discharged from the daily life of residents, mainly from residential buildings and public buildings, such as residences, institutions, schools, hospitals, shops, public places and toilets of industrial enterprises. The pollutants contained in domestic sewage are mainly organic matter (such as protein, carbohydrates, fat, urea, ammonia nitrogen, etc.) and a large number of pathogenic microorganisms (such as parasite eggs and intestinal infection viruses, etc.). The organic matter present in the domestic sewage is extremely unstable and easily corroded to produce foul odors. Bacteria and pathogens multiply with organic matter in domestic sewage as nutrition, which can lead to the spread of infectious diseases. Therefore, domestic sewage must be treated before discharge. The harm of domestic sewage to human beings Pathogen pollution: Such pollutants actually enter the human BODy through various ways, and survive in the BODy, causing human diseases. Oxygen-demanding organic matter pollution: The more aerobic organic matter in the water BODy, the more oxygen consumption and the worse the water quality, which means the more serious the water BODy pollution is. Eutrophication pollution: It is a phenomenon of water pollution caused by excessive content of plant nutrients such as nitrogen and phosphorus. Stench: Causing adverse reactions in the human BODy Some aquatic products are contaminated with stench and cannot be eaten or sold; Destroy the use and value of water BODies; It can also produce toxic hazards such as hydrogen sulfide and formaldehyde. Acid, alkali, salt pollution: It has adverse effects on freshwater organisms and plant growth, further harming soil quality Increased hardness of groundwater: Affect human drinking For industrial water use, it must be softened Affect the ecological environment Toxic substance pollution: Is a toxic hazard to biological organisms. The significance of sewage treatment 1. Improve water quality and save water resources. The treated sewage greatly reduces the degree of water pollution, whether it is discharged or reused, it can meet the standard and save water resources. 2. Improve the ecological environment. The discharge of untreated sewage into rivers will not only pollute the environment, but also adversely affect the quality of people's domestic water. 3. Promote the water circulation system. The natural cycle of water is a non-equilibrium open system with an organizational structure, and the social cycle of water is a balanced system with an artificial organizational structure. The solutions of domestic sewage treatment 1. Aerated biological filter The aerated biological filter is a new process integrating biological oxidation and throttling suspended solids, which can effectively remove suspended particulate matter, COD, BOD5, nitrifying substances, remove nitrogen and phosphorus, and remove harmful substances. It has the advantages of saving time, consumption and money. However, this process has strict requirements on SS content, which needs to be controlled between 60 and 100 mg/L, so a pretreatment unit needs to be set up when using it. Biological aerated filters are widely used in advanced water treatment, micro-pollution source water treatment, refractory organic wastewater treatment, and low-temperature sewage treatment.