Nitrifying bacteria are chemoautotrophs that convert ammonia into nitrite then nitrate. A biofilter provides a substrate for the bacterial community, which results in thick biofilm growing within the filter. Water is pumped through the filter, and ammonia is utilized by the bacteria for energy. Nitrate is less toxic than ammonia (>100 mg/L), and can be removed by a denitrifying biofilter or by water replacement.
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k1 media mbbr bio filter Ras Fish Water Treatment aquaculture equipment bio media MBBR
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Meorient Import & Export Co.LTD
China - Hangzhou
Trading Company
Trade Capacity
Export Percentage
Nearest Port
Hangzhou,Shanghai
Accepted Delivery Terms
Employees
5-10人
Accepted Payment Currency
USD,CNY
Average Lead Time
45 Day(s)
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Product Specifications
--Product Description
RAS Description
Main eWater RAS processes and the equipment necessary
A series of treatment processes is utilized to maintain water quality in intensive fish farming operations. These steps are often done in order or sometimes in tandem. After leaving the vessel holding fish the water is first treated for solids before entering a biofilter to convert ammonia, next degassing and oxygenation occur, often followed by heating/cooling and sterilization. Each of these processes can be completed by using a variety of different methods and equipment, but regardless all must take place to ensure a healthy environment that maximizes fish growth and health.
Process | Equipment necessary |
Biolfiltration | denitrifying biofilter,MBBR process |
Solids removal | drum filter, sand filter, protein skimmer |
Reoxgenating | oxygen cone or low pressure oxygenating device |
PH control | degassing device |
Temperature control | submerged heaters, heat pumps, chillers, and heat exchangers |
Biosecurity | UV sterilizer ,ozone generator |
Product Description
Biofiltration System
All RAS relies on biofiltration to convert ammonia (NH4+ and NH3) excreted by the fish into nitrate.
Details Images
Successful Cases
RAS used to grow Pabda in Bangladesh
Farming cycle time: 120 days (fingerlings to 80 grams for
harvesting)
Biomass ( stock density): 80 kg /m ³
RAS water volume: 285 m³
RAS water flow: 240 m³/hour
RAS used to grow Tilapia in Jordan
Three tanks for grow-out and one tank for harvesting
Water volume: 1182 m³
12 small tanks for fingerlings nursery, each tank 36m³
Biomass(stock density) at harvesting : 100 kg /m³
RAS water flow: 1000 m³ /hour
Pabda Catfish (Ompok Pabda)
● Culturing Cycle Time: 90 – 110 D to 40 - 55 grams size
for harvesting
● Biomass: 60 kilograms/m3 at harvesting
● Temp: 15 – 30 ℃, 22 – 27 ℃ preferred
RAS used to grow American eel
● Culturing Cycle Time: 150D to 150 grams size from
50-gram fingerlings
● Biomass: 60 kilograms/m3 at harvesting
● Temp: 26-30℃
Company Profile
About ewater
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 its product design and production, including drum filters, protein skimmers, biological filters, aeration equipment, disinfection equipment, heat pumps and
water quality monitor quipment.
We work with top-level aquaculture research institutes and experts to develop best solutions for our customers in aquacultrure industry. Our engineering team is committed to develop best practices for each equipment and RAS based on customers' needs. We continue to be reliable and honest in what we do and how we act.
Our mission is to improve sustainability and profitability for customers,and be a valuable partner for customers'
long-term business.
long-term business.
Exhibition
Exhibition in Nanning City Guangxi Province，China
Exhibition in Zhanjiang City Guangdong Province，China
Installation Services
Great Service is Our Misson
● Consulting service available and custom designs are welcomed!
● We offer practical solutions, premium quality products along side competitive prices and prompt delivery.
● All the equipment are guaranteed for 2 years and life-time warranty except for the wearing parts.
● Support onsite installation and sending engineer for debugging on demands.
● After-sales service and content: If the quality problems occur; even the equipment lose the ability of working, we will repair or replace them free of charge during the warranty period. The product is life-long maintenance and we will
provide all-round services except for factors such as artificial damage or irresistible force.
On-site installation services in Uzbekistan
On-site installation services in Bangladesh
Customer Photos
You are welcome to visit our factory.
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