The air flotation tank does not produce scum factors, the operating principle of the air flotation t

In the treatment of sewage, there are certain differences in the equipment and products used in different occupations, and people generally choose air flotation machines when treating a lot of sewage, so how does this equipment reach the intention of sewage treatment in the process of operation? In fact, the principle of air flotation equipment is easier to understand, when the device uses air flotation equipment, a lot of bubbles will occur on the surface of the sewage, and the bubbles that occur are not only large, but also can float densely on the water surface, and the fine bubbles that occur at this time can be combined with impurity particles, and the impurities are separated from the water by the method of separation, so that the sewage treatment process can be completed and started. When using the air flotation machine, the manufacturer does not need a lot of investment, and can use the lowest cost to achieve the first processing effect, and now the scale of the use of this equipment is also relatively ...

One is the problem of water quality, the second is the problem of medicine, and the third is the problem of equipment. We've been in all three of these situations. It is not possible to generalize.

It's best to do a test first to rule out one and two. Let's start with the device. Sometimes the dissolved air flotation effect is stronger than that of the vortex concave.

It depends on whether it is pre-biochemical or post-biochemical. I do air flotation machines. Hopefully you can fix it.

I don't know if there is flocculent after you add the drug and coagulation.

If not, it may be that the dosing is not well controlled.

1. The amount of dosing is not well controlled (too much or too little);

2. The dosage is correct, but the pH of the wastewater is not right, and there is no pH range for the optimal use of the corresponding agent (if it is a PAC, it should be about neutral, and if it is a ferrous flocculant, the pH should be adjusted to more than 9).

3. The mixing effect of chemicals and wastewater is not ideal;

If there are flocculent flowers in the coagulation process, then it is a matter of air flotation effect (see how the dissolved gas effect is):

1. Structural design of air flotation;

2. There are problems with key equipment such as container pumps and dissolved air releasers for air flotation;

3. Is the dissolved gas tank blocked because a lot of suspended solids have entered it?

1. The dissolved gas effect is not good, and 2. The dross flocculation effect is not good.

Principles of the Air Flotation ProcessThe air flotation process is an efficient and fast method for separating solid particles from water and wastewater.

Its working principle is that part of the treated wastewater circulates into the dissolved air tank, in the pressurized air state, the air is supersaturated and dissolved, and then mixed with the raw water with the addition of flocculant at the inlet of the air flotation tank, due to the decrease in pressure, the supersaturated air is released, forming tiny bubbles, which quickly attach to the suspended solids and lift it to the surface of the air flotation tank.

As a result, a floating layer of sludge is formed, which is easily removed, and the heavier solids that settle at the bottom of the pond are also removed.

The air flotation tank has been widely used in the water supply purification treatment with low raw water turbidity, algae, low temperature, high color and low dissolved oxygen, and is also widely used in wastewater treatment in oil refining, papermaking, printing and dyeing and other industries.

Air flotation is a solid-liquid or liquid-liquid separation process, which is mainly used to separate and remove water that is difficult to settle and dense.

Degrees close to water or tiny suspended solids, colloids, oils or greases that are smaller than water.

In the process of air flotation, a large number of fine and uniform bubbles are formed to form a three-phase mixture of bubbles, water and floc (oil), and the bubbles are used as carriers to fully mix, contact and adhere with the suspended floc particles in the water, so as to form a sandwich floc and float to the surface of the liquid, and the scum is skimmed off by a mechanical foaming machine to achieve the purpose of separating impurities and purifying water quality.

The theoretical basis of the dissolved air process - Henry's law is the dissolved air flotation system, the air is dissolved in water under high pressure and close to saturation, and released under reduced pressure to near normal pressure, and the dissolved supersaturated air is precipitated from the water in the form of tiny bubbles for air flotation.

Applications:1The goal is to separate substances such as suspended solids, colloids, oils or greases, and algae from the water.

2.Separation or ** of oil or grease in wastewater: oil extraction and refining, biodiesel, mechanical processing, food processing and catering, etc.

3.High-concentration organic wastewater pretreatment: papermaking, printing and dyeing, textile, leather, pharmaceutical, fermentation and other wastewater.

4.Biochemical effluent solid-liquid separation (advanced treatment): solid-liquid separation of itchy effluent, solid-liquid separation of biochemical effluent (activated sludge method, contact oxidation, filter), advanced treatment of secondary sedimentation tank effluent, etc.

5.Pretreatment of breeding and slaughtering wastewater: wastewater from breeding (cattle, pigs, chickens) farms and slaughterhouses.

6.Physicochemical treatment of manufacturing wastewater: electroplating, spraying, etc.

7.Deep purification of water: river water treatment, landscape water and deep reuse water, etc.

This answer is provided by Shanghai Zhongshen Environmental Engineering****.

Zhongshen Environmental Protection is a professional environmental protection company focusing on providing customers with separation machinery and equipment and overall solutions in their fields. For a long time, the company has been relying on the value concept of "integrity, professionalism, safety and innovation" and the continuous innovation of environmental protection water treatment equipment technology, its products and system solutions have been widely used in domestic petrochemical, pharmaceutical, food, leather, printing and dyeing, papermaking, coking, municipal and other industries wastewater and landscape water treatment, and exported to the European Union (the Netherlands, Germany, France and other countries), Russia, Southeast Asia, North Africa and other countries and regions.

Summary. In recent years, with the development and wide application of air flotation technology, air flotation machine has also been developed and applied, and is now widely used in wastewater treatment and drainage industry. When using an air flotation machine, scum is generated as sewage treatment progresses.

Scum refers to the slag on the surface produced during the treatment of air flotation machine, scum treatment is an important part of improving the air flotation cleaning system, if it is not done well, it will affect the total effect of the equipment, and even produce ***, how to deal with the scum? Here's an introduction. Generally, the scum in the air flotation machine is returned to the mixed juice in foreign countries, and the clarified lime water is used for treatment, which is said to be because the calcium phosphate and flocculant in the scum can also be used.

You should know that after the scum is formed, there will be reconstitution when we dilute it. And the greater the dilution of the dross, the more reconstitution it contains, which is what we need to pay attention to.

In recent years, with the development and wide application of air flotation technology, air flotation machine has also been developed and applied, and is now widely used in wastewater treatment and drainage industry. When using an air flotation machine, scum is generated as sewage treatment progresses. Scum refers to the slag on the surface produced during the treatment of the air flotation machine, the scum treatment is an important part of improving the air flotation cleaning system, if it is not done well, it will affect the total effect of the equipment to dress up Yukai, and even produce ***, how to deal with the scum?

Here's an introduction. Generally, the scum in the air flotation machine is returned to the mixed juice in foreign countries, and the clarified lime water is used for treatment, which is said to be because the calcium phosphate and flocculant in the scum can also be used. You must know that in fact, after the formation of scum, when we carry out the process of dilution, there will be reconstitution.

And the greater the dilution of the dross, the more reconstitution it contains, which is what we need to pay attention to.

Summary. 1. It may be that the temperature in the pool is too high, resulting in scum precipitation; 2. It may be that the temperature in the pool is too low, resulting in the scum not completely dissolved; 3. It may be that the temperature in the pool is uneven, resulting in the scum not being completely dissolved; 4. It may be that the temperature in the pool is too low, resulting in the scum not completely precipitated; 5. It may be that the temperature in the pool is too high, resulting in the scum not completely precipitated; 6. It may be that the temperature in the pool is uneven, resulting in the scum not completely precipitated; 7. It may be that the temperature in the pool is too low, resulting in the scum not completely dissolved and precipitated; 8. It may be that the temperature in the pool is too high, resulting in the scum not completely dissolved and precipitated; 9. It may be that the temperature in the pool is uneven, resulting in the scum not completely dissolved and precipitated; 10. It may be that the temperature in the pool is too low, resulting in the scum not completely dissolved, precipitated, and the scum is not completely presettled, thus forming foam.

1. It may be that the temperature in the pool is too high, resulting in scum precipitation; 2. It may be that the temperature in the pool is too low, resulting in the scum not completely dissolved; 3. The temperature in the pool may be uneven, resulting in the scum not completely dissolved; 4. It may be that the temperature in the pool is too low, resulting in the scum not completely precipitated; 5. It may be that the temperature in the pool is too high, resulting in the scum not completely precipitated; 6. It may be that the temperature in the pool is uneven, resulting in the scum not completely precipitated; 7. It may be that the temperature in the pool is too low, resulting in the scum not completely dissolved and precipitated; 8. It may be that the temperature in the pool is too high, resulting in the scum not completely dissolved and precipitated; 9. It may be that the temperature in the pool is not uniform, resulting in the scum not completely dissolved and precipitated; 10. It may be that the temperature in the pool is too low, resulting in the scum not completely dissolved, precipitated, and the scum is not completely presettled, thus forming foam.

Can you elaborate on that a little bit more?

Reasons:1The air flotation device of the air flotation tank may malfunction, resulting in poor air flotation effect and inability to lift the scum up; 2.

The temperature of the air flotation tank may be too high, resulting in the sediment precipitation and inability to be lifted by the air flotation device; 3.The agitator of the air flotation tank may malfunction, resulting in the mixing not being uniform and the scum cannot be lifted; 4.The blowdown port of the air flotation tank may become blocked, so that the scum cannot be discharged and cannot be lifted by the air flotation device.

Workaround:1Check the air flotation device of the air flotation tank to ensure that it is operating properly; 2.

Check the temperature of the air flotation tank to make sure it is not too high; 3.Check the agitator of the air flotation tank to make sure it is operating properly; 4.Inspect the blowdown of the air flotation tank to make sure it is not blocked.

Personal Tips:1Regularly inspect the air flotation device, agitator and sewage outlet of the air flotation tank to ensure its normal operation; 2.

Check the temperature of the air flotation tank regularly to make sure it is not too high; 3.Clean the outfall of the air flotation tank regularly to ensure that it is not blocked; 4.Regularly inspect the agitator of the air flotation tank to ensure that it is operating properly to ensure the lifting effect of the dross.