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★Rotary Drum Filter is a pre-filter of solid-liquid separation in seawater or freshwater aquaculture. It is widely used in various occasions that need solid-liquid separation. ★Multiple working modes: Auto, Stop and Manual. When in Auto working mode, it can automatic turn on and off backwashing system. It also can base on mesh's blocking situation to set the backwashing time. ★Transparent cover made of thicker anti-throw material. Can view the running state at anytime. ★The rotary drum filter is the perfect equipment for marine filtration applications or fish farming. It is made to be installed directly in a basin or a canal made of concrete. ★The drum filter can separate solids, like food waste, fish feces and other organic waste which are over 30 μm from the tail water.

The new circulating seafood holding system, the difference lies in the back end of the water treatment equipment, the water body of the holding tank will be led to a special water treatment room, through the protein separator, biochemical filtration tank, UV sterilizer, oxygenator and other equipment composed of the integrated system, rapid completion of the water quality filtration, and through the pump back to the holding tank.

RAS are used in home aquaria and for fish production where water exchange is limited and the use of biofiltration is required to reduce ammonia toxicity. Other types of filtration and environmental control are often also necessary to maintain clean water and provide a suitable habitat for fish. The main benefit of RAS is the ability to reduce the need for fresh, clean water while still maintaining a healthy environment for fish. RAS have high fish stocking densities and can be operated economically commercial. All our eWater researchers are currently conducting studies in RAS and we have many successful indoor fish farming projects all over the world.

Bangladesh RAS Recirculating Aquaculture System Project Fish Species: Shing & Magur Biomass( stock densitv): 100 kilograms /m3 16 x 23.7m³ PVC Fish Pond 400m³/h Drum Filter 3 x 60m³/h Degassing System 5×60m³/h Bio-filter 120m³/h Oxygen Cone Key elements in indoor aquaculture projects include farming facilities, water quality control systems, temperature control equipment, lighting management, and feed supply. Comprehensive management and monitoring are also necessary to ensure the stability and sustainable development of aquaculture. When undertaking indoor aquaculture projects in the Bangladesh, it is important to choose suitable cultured species based on local resources and market demand. It is also crucial to comply with relevant regulations and policies to ensure that aquaculture activities adhere to environmental and food safety requirements.

Indoor tilapia farming project in Shantou refers to the cultivation of tilapia fish in an indoor environment. Tilapia is a popular freshwater fish that is widely farmed for its high protein content and delicious taste. Indoor farming provides better control over environmental factors such as water quality, temperature, and nutrition, ensuring optimal conditions for tilapia growth. Key aspects of an indoor tilapia farming project include: Facility setup: Designing and setting up suitable tanks or ponds, including water filtration and recirculation systems, to maintain water quality. Water quality management: Monitoring and controlling parameters such as temperature, pH level, dissolved oxygen, and ammonia levels to maintain a healthy environment for tilapia. Feeding: Providing appropriate and balanced feed to meet the nutritional requirements of tilapia, which may include commercial feeds or a formulated diet. Disease prevention and management: Implementing biosecurity measures to prevent the introduction and spread of diseases, regular health monitoring, and appropriate treatment if needed. Growth monitoring: Regularly assessing the growth rate and size of the tilapia to ensure optimal development and make any necessary adjustments to feeding or environmental conditions.

ZhongShan eWater Aquaculture Equipment Technology Limited is a professional company engaged in design production and sales of Recirculating Aquaculture System as well as aquaculture equipment. eWater is focused on the development and manufacturing of industrial recirculating aquaculture system solutions, and the design and production of aquaculture equipments including drum filters, protein skimmers, biological filters, aeration equipments.

A degassing equipment to strip the CO2 from the aquaculture water.A indoor fish farming equipment for aquaculture water treatment.

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Effectively remove organic compounds from outlet water coming from fish tanks as well as cleaning the inlet water entering the farm. Equipping with imported screens for easily rinsing and durable performance Filtration precision:20-80um

Ozone generator disinfection functions can widely use in Aquaculture, Waste Water Treatment, Water Deputation, Waste Gas Treatment, Food & Beverage Processing, Cold-Storage, Medical Treatment and other industrials that demand Ozone. The Ozone generator has own oxygen generate system. Using air as raw material, no need any auxiliary materials, low power consumption, low cost, low noise with a large oxygen flow rate and adjustable.

Oxygen cones are used to enter and mix an oxygen in the water for the fish. It is used both in closed circuits as well as in the flowing ponds. Water inside the cone provided by circulation pumps is mixed with oxygen supplied from a separate vessel. Water enters at the top of the cone and flows downward. At the same time, oxygen is introduced through a fitting at or near the top of the cone. The downward-flowing water counteracts the buoyancy of the rising oxygen bubbles. The bubbles are kept in suspension, no matter how large or small they are.

Oxygen column are used to enter and mix an oxygen in the water for the fish. It is used both in closed circuits as well as in the flowing ponds. Water inside the cone provided by circulation pumps is mixed with oxygen supplied from a separate vessel.

Oxygen is one of the main parameters concerning fish health welfare. In intensive farming it is important that adequate levels of oxygen can be maintained at all times in the fish tank to optimize feeding, welfare and growth. Medium Head Oxygenators are normally the preferred choice in our designs. In this way we do not need an extra pumping step and are still able to supply the oxygen in an efficient way.

When fish consume oxygen, CO2 is released in the water. To high carbon dioxide levels can negatively influence the fish growth or even be lethal. Therefore, it is important that CO2 is efficiently removed from the culture water. Degassing towers or active aeration are two principles, which are commonly used in aquaculture. Both methods are based on diffusion of CO2 out of the water into air.

Biofiltration process： A biofilter is a bed of media on which microorganisms attach and grow to form a biological layer called biofilm. Biofiltration is thus usually referred to as a fixed–film process. Generally, the biofilm is formed by a community of different microorganisms (bacteria, fungi, yeast, etc.), macro-organisms (protozoa, worms, insect's larvae, etc.) and extracellular polymeric substances (EPS). The aspect of the biofilm is usually slimy and muddy.

The rotary drum filter can effectively remove organic compounds from outlet water coming from fish tanks as well as cleaning the inlet water entering the farm . Able to remove 42%-75% of the total particles from aquaculture water volume . Ewater new designed rotary drum filter with complete series , and cover all needs for mechanical filtration in aquaculture production

A recirculating aquaculture system for carp and catfish hatchery in Uzbekistan, including the fish tanks, rotary drum filter,degassing equipment, protein skimmer,oxynation system,water disinfection equipment,etc.

200T/hr indoor ras fish farming system for largemouth fish. Essential equipment: drum filter,degasser,protein skimmer,fish tanks,UV sterilizer,biofilter system etc.