Description of process

In a sewage plant, what is the process of using a spiral settling centrifuge for desliming?

In sewage treatment plant, in the treatment of activated sludge, the whole process of using spiral settling centrifuge is: through the high-speed rotating drum, to drive the high-speed rotation of sludge, and then generate centrifugal force, so that the solid particles in the sludge settlement is accelerated, and concentrated on the drum wall. Then, through the spiral, the mud cake is scraped to the small end of the drum, so that it can be discharged, thus completing the mud removal work.

Common malfunctions: Excessive vibration

Cause Analysis: 1. There are uneven deposit materials inside the drum.
2. The bearing on the drum or screw is damaged.
3. The joint of the rotating parts is loose or deformed.
4. The feed is uneven.
5. Newly replaced parts dynamic balance not good.
6. Serious wear and tear on the parts

Method of exclusion: 1. Flush with clean water and work with hand-barring
2. Replace the damaged bearing.
3. Check the repair.
4. Adjust the amount of feed.
5. Adjust or replace.

6. Repair or replace.

What is the advantage of decanter centrifuge to treat the waste water?

The horizontal screw discharging and settling centrifuge (referred to as horizontal screw centrifuge) with a fully closed and continuous operation with a large length-diameter ratio is used as the main machine of the sewage treatment centrifuge, which has the following advantages:

1. Fully closed operation, clean and pollution-free site.

2. The amount of flocculant and cleaning water is small, and the daily operation cost is low.

3. The equipment layout is compact, covers a small area, can significantly reduce the land acquisition and infrastructure investment.

Other Applications :

The 3-phase decanter separates which contains oil into an oil phase, solids and virtually oilfree waste water. Because of its high dry matter, the solids can be recycled relatively easily.

In addition, the solids concentration in the waste water is lower than would be the case if nozzle separators are used in conventional process.

Technological Data :

*** F: Ex-proof, W:Waste water, S: Three phase FS:Ex-- proof and three phase

FAQ :

Q:The paper mill sewage is treated with a horizontal screw centrifuge. It is found that there is a little bit more slag and blockage. How to deal with it?

A:How to judge that the horizontal spiral centrifuge has a little more slag? Is it compared with the same technical parameters before? Or did you change another decanter centrifuge or add too much medicine? Increasing the precision of machine parameters or the dosage of reagents both can bring about more slag discharging. In short, the smaller suspended solids that were previously hidden in the sewage are also separated by centrifugation. If the pretreatment is not done well, it can also increase the solid content of the fluid.

We have 2 solutions to solve the condition of more slag. One is to do a good job of pretreatment to reduce the solid content of the fluid, and the other is to adjust the differential speed of the spiral sweeping paddle of the horizontal screw centrifuge to make the pushing more smooth. We use the juneng horizontal spiral centrifuge, which is very stable in performance. After more than two years of use, there is no sudden change in performance.