What does the surface loading rate of high efficiency shallow air flotation machine mean

Shallow air flotation machine has successfully applied the "shallow theory" and "zero speed" at the root of the traditional air flotation theory"The principle, after careful design, integrates agglutination, air floating, skimming, sedimentation, and mud scraping, and is an efficient equipment for water purification treatment. Shallow air flotation machine features 1The air flotation machine has a hydraulic retention time (3-5min) in the pool with a water depth of 400-500mm2.

3.The purification capacity is large, that is, the surface load is high. 4.

It occupies a small area, the unit load is light, all prefabricated components are assembled, no operation room is required, and the equipment can be overhead equipment or multi-layer combination. 5.The equipment is low to repair and easy to clean.

6.The degree of purification is high, and the removal rate of suspended solids is more than 90%7The dissolved gas system used in this equipment has a wonderful structure, the dissolved gas power is as high as 90%, and the volume is only one-fifth of the general dissolved gas system.

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The advantages of efficient shallow air flotation are mainly as follows:

1. The purification tank is shallow, and the residence time of sewage in the air flotation tank is only 3 5min, but there is enough scum reserve space on the surface, which is especially suitable for the treatment of high-concentration sewage.

2. Unique dissolved gas system design, small size, high dissolved gas efficiency and compact structure. The equipment occupies a small area and has high efficiency.

3. The processing capacity is large, and the surface load is 8 15m3 m2 h.

4. It covers a small area, or it does not occupy an area, and it is overhead, stacked or set up on the building.

5. It is equipped with an automatic water level adjustment device, which has a large flow adaptation range and a high solid content of the scraped scum.

6. Assembled structure, easy to transport, install and relocate.

7. The rigidity is large, and only a "well" shaped concrete beam is needed to support, which does not need to be constructed, and the civil construction cost is low.

8. There are three types of carbon steel (stainless steel in key parts), some stainless steel, and all stainless steel, and all carbon steel has undergone special heavy anti-corrosion treatment after sandblasting, which can withstand acid and alkali corrosion, and is as good as new after ten years of use.

High-efficiency shallow air flotation machine.

1. Structural features.

The main body of the advection dissolved air flotation machine is a rectangular steel structure. The main components are composed of dissolved air pump, air compressor, dissolved air tank, rectangular box, air flotation system, sludge scraping system, etc.

1.The dissolved air tank produces fine bubbles, with a particle size of 20-40um, and the adhesion floc is firm, which can achieve a good air flotation effect;

2.The amount of flocculant used is small, and the cost is reduced;

3.The operating procedures are easy to master, the water quality and quantity are easy to control, and the management is simple.

4.Equipped with a backwash system, the release is not easy to block.

5. Overcome many problems such as unstable operation of traditional air flotation device, large bubbles and blockage of release head.

6. Since the air flotation process is an aerobic process, the problem of odor generated by sludge has been well solved.

High-efficiency shallow air flotation machine.

In recent years, sewage treatment has attracted much attention, and air flotation equipment has gradually stood out in water treatment equipment, but people do not know much about the equipment

The key point of the design of dissolved air flotation equipment is the air flotation method, which is designed according to the design of air pressure, the concentration of suspended solids, and the speed of the separation chamber.

1. The dissolved air releaser in the contact room needs to be selected according to the determined return flow, dissolved gas pressure and the range of action of various types of releasers according to the following table

2. The effective water depth of the air flotation pool is generally taken, and the water retention time in the pool is generally 10 20min;

3. Under the condition of conditions, the necessary air flotation small test or model test should be carried out on the wastewater to be treated. According to the test results, the appropriate dissolved gas pressure and reflux ratio are selected. Usually the dissolved gas pressure is adopted, and the reflux ratio is between 5% and 100%, and the determination of the reflux ratio needs to be with the concentration of suspended solids.

The reflux ratio is large for high concentration, and the reflux ratio is small for small concentration.

4. There is no strict requirement for the length-to-width ratio of the air flotation tank; Generally, the width of a single grid should not exceed 10m, and the pool length should not exceed 15m;

5. To determine the pool type of the air flotation tank, it should be comprehensively considered according to the requirements for the treatment of water quality, the connection between the water purification process and the pre- and post-treatment structures, the coordination of the surrounding terrain and structures, the difficulty of construction and the cost. The reaction tank should be built together with the air flotation tank. In order to avoid breaking the floc, attention should be paid to the articulation form of the structure.

The flow velocity of the contact chamber of the inlet floating pool should be controlled;

6. It is necessary to fully study the water quality of the water to be treated, and analyze the rationality and applicability of the air flotation process;

7. The contact chamber must provide good contact conditions for bubbles and flocs, and the width should consider the requirements of installation and maintenance. The upflow velocity of the water flow is generally taken as 10 20mm s: and the residence time of the water flow in the room should not be less than 60 seconds.

8. According to the type of coagulant, dosage, flocculation time, reaction degree, etc., determine the reaction form and reaction time, and the general precipitation reaction time is shorter, 2-30 minutes is appropriate;

9. The air flotation separation chamber should be determined according to the difficulty of floating separation and the treatment requirements of water quality with air flocs. Select the flow rate of the water flow, generally taken, that is, the surface loading rate of the separation chamber;

Air flotation machine is a water treatment equipment that produces a large number of fine bubbles in the water by the dissolved air system, so that the air is attached to the suspended matter particles in the form of highly dispersed tiny bubbles, resulting in a state with a density less than that of water, and uses the principle of buoyancy to make it float on the water surface, so as to realize the solid-liquid separation. Air flotation machines are divided into super-efficient shallow air flotation machines, vortex concave air flotation machines, and advection air flotation machines. At present, it has applications in water supply, industrial wastewater and urban sewage treatment.

The advantages of air flotation machine are that its solid-liquid separation equipment has the characteristics of low investment, very small ground occupation, high degree of automation, and convenient operation and management. Weifang Tianyuan Environmental Protection Technology Co., Ltd. is a high-tech enterprise integrating the production and research and development of environmental protection equipment, and is now the cooperation base of Shandong Academy of Water Conservancy Sciences, and was designated as a key recommended enterprise by Shandong Provincial Environmental Protection Bureau in 2011. Advanced....

Features of super-efficient shallow air flotation machine system.

1. Qianshunxiang shallow air flotation machine adopts "shallow theory", "zero speed theory" and new dissolved gas mechanism design;

2. The residence time is short, only 3-5 minutes, the surface load is high, and the floor area is small;

3. The pool depth is only 600-700mm;

4. The solid content of the slag can be as high as 3-5%, the removal rate of suspended solids can be up to 98%, and the suspended solids in the effluent can be less than 30mg l;

5. Forced water distribution, inlet and outlet water are static, and the adhesion of microbubbles and flocs occurs in the whole air flotation separation process including the contact area; The scum is instantaneously removed, isolated and discharged, and the water disturbance is very small;

6. The design of the dissolved air tube is unique, the volume is small, the dissolved gas efficiency is high, and the dissolved air water and the addition point of the agent are reasonably selected to ensure the realization of copolymerization air flotation;

7. The equipment is lightweight, high efficiency, high stability, easy to transport and install;

8. This product is our company to attract foreign advanced technology, innovation and development, and has the leading level in China.

1. Adopt the design of "shallow pool theory" and "zero speed theory", which is efficient, energy-saving, small in size and easy to install.

2. The residence time is short (3 5min) and the loading rate of the wrapping surface is high (.

3. It is dragged by high-speed motor, which has strong adaptability and good process conditions.

4. The method of distributing water with dissolved air water and raw water completely separated, equipped with a special releaser, has good treatment effect, the SS removal rate is as high as 90%, and the solid content of slag can reach 3 4%.

5. High degree of automation, convenient management and reliable operation.

First, it should be used for water treatment in lakes for water from water plants, algae removal and turbidity.

Second, it is used in industrial sewage treatment projects, such as petrochemical, papermaking, textile, printing and dyeing, electroplating, tanning, food industry and other fields.

Third, it is used in the useful substances in sewage, such as: fibers in papermaking and pulp water.