Germany is good. As early as 1948, Ruihao Company was established in Rehau, Bavaria, Germany, and began research and production mainly based on polymers. Its products cover many fields such as environmental protection, municipal, construction, industry, medical, furniture, aviation, etc. In the field of environmental protection, German Ruihao Company is one of the foreign brands entering the Chinese market. Since 2003, Ruihao aeration products have been proven to have excellent application effects in municipal, petrochemical, printing and dyeing, food, coking and other fields. Ruihao Micro porous Aerator is becoming an increasingly popular brand among users due to its durability, safety, and energy-saving performance.

Product Introduction
The RAUBIOXON PLUS aeration disc is specially developed by Ruihao to provide microbubbles for sewage biological treatment processes. -Silicone rubber film has stable physical and chemical properties

German Ruihao Silicone Aeration Plate for Metallurgical Wastewater

-Long economic service life

-Uniform and flexible arrangement of aeration discs

-Small pressure loss, significant energy saving

-Can be used for sewage treatment plants that operate continuously or intermittently

-Suitable for municipal or industrial wastewater

Product advantages
The RAUBIOXON PLUS aeration disc adopts a specially developed silicone rubber membrane by Ruihao, which has the following advantages:

-Corrosion resistance and aging resistance, stable operation

-No plasticizers, can maintain the elasticity of the film for a long time

-Anti grease

In addition, the saddle seat connection method developed by Ruihao can save installation time by 80%.

Scope of application
The product can be used in the following wastewater:

-Municipal sewage

-Petrochemical wastewater

-Steel coking wastewater

-Leather wastewater

-Papermaking wastewater

-Textile printing and dyeing wastewater

-Food wastewater

-Beverage wastewater

-Pharmaceutical wastewater

-Printing wastewater

-Garbage leachate

-Chemical wastewater

Note: The applicability of the product is determined through testing under the same water quality conditions.

For special usage environments, please consult with Ruihao engineers

Scope of supply

Product Manual

—RAUBIOXON PLUS DISC 260

one. Product Introduction

1. Introduction

The RAUBIOXON PLUS DISC 260 aeration system consists of silicone rubber membranes, support disks, snap rings, saddle connections, and other components. When oxygenation and aeration are carried out, compressed air diffuses into the water through the microporous gas layer to achieve the purpose of oxygenation and aeration.

German Ruihao Silicone Aeration Plate for Metallurgical Wastewater

2. Performance

The RAUBIOXON PLUS DISC silicone rubber membrane microporous disc aerator is made of corrosion-resistant and anti-aging materials:

-Aeration membrane: Silicone membrane

-Support disk:PPpolypropylene

2.1 Characteristics of Silicone Membrane:

a. Advantages of silicone film

-High elasticity

-Not easily brittle

-Low affinity with sediment

-Oil resistance

-Not easily hardened

-Non biodegradable

-High resistance to chemical corrosion

-Save energy consumption

-Recyclable

b. Performance parameters of silicone rubber film

c. Performance parameters of the support disk

2.2 Advantages of Silicone Rubber Aeration Disk

-Silicone membrane is corrosion resistant and aging resistant, with long service life and stable operation

-The flexible point system design ensures that the micropores on the membrane automatically close when the gas supply is stopped, preventing wastewater from entering the tray

-Perforation will not block, suitable for both continuous operation and intermittent operation

-Good aeration characteristics, high oxygen utilization rate and power efficiency

-The volume of bubbles, uniform distribution of bubbles

-Quick and easy installation method, saving a lot of accessories

-After passing through the aeration disc, the average diameter of the bubbles1.0~2.0mm.

-Under normal usage conditions, maintain a high oxygen transfer rate during the service life.

-Use a condensate drainage device to remove the accumulated water in the air distribution pipe.

two.Aeration disk parameter table

three. Design and Structure

a. The aeration disc provided by our company can adapt to work under different sewage quality and temperature conditions, meet the needs of sewage biochemical treatment in the aerobic zone of the biochemical tank, effectively diffuse the air from the blower evenly into the water, and maintain stable oxygenation effect and efficiency for a long time. When the gas supply is stopped, the aeration hole can be effectively closed.

German Ruihao Aeration Plate

b. The microporous mode aeration disc meets the following requirements:

-Single disk outer diameter 270mm.

-The service life of the microporous mode aeration disc: not less than5Year (municipal wastewater).

c. The microporous aeration disc is disc-shaped and attached with a silicone rubber membranePPOn the support plate made of high-strength materialPPMaterial fixing ring fixation.

d. The rubber film is made of German imported silicone rubber material. The membrane is made using injection molding technology; The membrane punching is mechanical punching, with square holes perpendicular to the membrane pattern.

e. The air entering the aeration disc must be purified to meet the requirements of long-term continuous use or disuse before being put back into use, without causing blockage of micropores and backflow of mixed liquid.

f. The connection between the aeration disc and the air distribution pipe adopts a saddle interface, which does not require additional bolt fastening, avoiding the possibility of detachment during operation caused by different tightening forces of double bolts and saving installation time.

g. The surfaces of each component on the microporous aeration disc are clean and smooth, without scratches, bubbles, pores, inclusions, spots, wrinkles, or sharp edges.

h. The aeration disc provided by our company is resistant to corrosion from urban sewage, high temperature, and acid and alkali.

four. Installation and debugging

The company will provide professional personnel to guide installation and debugging to ensure the quality of installation.

Before installation, it is necessary to check the dimensions of the civil structures.

Test the equipment after installation to ensure quality.

Ruihao Environmental Technology.Ruihao Environmental Technology (Taicang) Co., Ltd. is a wholly-owned subsidiary of German Ruihao Company established in China. It is a professional comprehensive supplier of aeration system solutions that integrates aerator design, production, warehousing, logistics, installation, commissioning, training, and after-sales service. For many years, Ruihao Environmental Technology has been committed to providing customized aerobic biological treatment aeration technology solutions for municipal sewage treatment and industrial wastewater treatment. We always focus on close cooperation with our customers and provide comprehensive solutions for the construction of new water plants, upgrading and maintenance of existing water plants. We have successfully achieved our goals in 500 sewage treatment plants in China.

Taicang Factory.In order to provide timely and effective services to China, Southeast Asia, and various countries in Australia, German Ruihao Company invested 200 million yuan in 2008 to establish a factory in Taicang, Jiangsu, China, fundamentally solving the problem of long supply times. At the same time, as the factory in China is a wholly-owned subsidiary of Germany's Ruihao, its raw material supply and production equipment are all from Germany, and the production process, inspection standards, personnel management, and even logistics and distribution all strictly comply with Germany's Ruihao's requirements. It not only maintains the quality of finished products, but also meets the needs of project progress in terms of supply time. Today's Ruihao has not only become a leader in product quality, but also driven the development of the aeration industry in various aspects such as design, research and development, and service.

Metallurgical wastewater

1. Characteristics

The acidic wastewater is very strong. After neutralization and removal of fluoride, the salt content of the wastewater accumulates, the hardness is high, and the pH value rises to 9-11. Wastewater contains metal ions such as zinc, copper, lead, cadmium, arsenic, nickel, as well as pollutants such as fluoride, nitrate, organic matter, colloidal particles, etc. If the raw water directly enters the membrane system, it will result in less water production and easy blockage of the membrane. It must be softened before removing heavy metal ions and COD from the sewage. After passing through the membrane deep treatment system, the produced water can be reused.

2. Composition

According to the sources and characteristics of wastewater, it mainly includes cooling water, acid washing wastewater, washing wastewater (dust removal, gas or flue gas), slag flushing wastewater, coking wastewater, and wastewater from condensation, separation or overflow in production.

3. Processing technology

Treatment of acid washing wastewater: A small amount of acid washing wastewater can be neutralized and iron salts can be recovered; For the larger amount, the freezing method, spray combustion method, diaphragm dialysis method and other methods can be used to recover acid and iron salt or separate and recover iron oxide. If neutral electrolysis process is used to remove iron oxide scale, there will be no acid washing wastewater. But the electrolyte must be treated by filtration or magnetic separation before it can be recycled.

Cooling water treatment: The treatment method is to first pass through a coarse particle sedimentation tank or a hydraulic cyclone to remove particles with a particle size of over 100 microns, and then send the wastewater into sedimentation to remove suspended particles; To improve the sedimentation effect, coagulants and coagulant aids such as polyacrylamide can be added; Floating oil in water can be removed with a scraper. Wastewater can be recycled after purification and cooling. The direct cooling water in the cold rolling workshop contains emulsified oil, which must be first destroyed by chemical coagulation, heating, or pH adjustment methods, and then subjected to flotation separation, or directly separated by ultrafiltration. The collected waste oil can be regenerated and used as fuel.

Treatment of washing water: Chlorine, bleach, or ozone can be used to oxidize wastewater into cyanide salts, or they can be added to make it non-toxic ferrous. Tower biofilters or aeration tanks can also be used for biological treatment. The washing water volume of blast furnace gas is large, and it is not economical to treat it with the above method. Therefore, most of them use sedimentation tanks to clarify wastewater and then recycle it.

The treatment of non-ferrous metallurgical wastewater: The treatment measures include strengthening production management, reducing wastewater volume, and recycling useful metals. The commonly used treatment method is lime neutralization, which mainly controls the pH value of wastewater to convert heavy metal ions into hydroxides and precipitate them; Alternatively, the sulfurization method can be used to introduce hydrogen sulfide into the wastewater, converting heavy metal ions into heavy metal sulfides for extraction; Harmful substances such as arsenic and fluorine can form insoluble compounds with calcium ions and precipitate and separate them. In addition, ion exchange, flotation, reverse osmosis, membrane electrolysis and other methods can be used to recover useful metals and purify wastewater.

4. Typical processing techniques

Fluidized precipitation method

Coagulation/membrane method