2 Phase Horizontal Decanter Centrifuge Sewage Treatment 460V

What is a Decanter Centrifuge? Horizontal Bowl centrifuges are also known as decanter centrifuges, centrifugal decanters or simply decanter machines and are primarily used for separation of liquids from appreciable amounts of solids. Decanters can separate over 50% (v/v) solids from liquids on a continuous basis. Typical industrial decanter applications include Crude Oil Tank Bottoms; Waste Oil, Industrial Wastewater, Sludge Dewatering, Fish Meal, WVO/UVO De-Sludging, Paint Sludge, Rendering etc. 

Working principle:

Centrifuge main components are: drum, screw pusher, main drive motor, differential system, shell, base, vibration isolator, connecting parts and supporting lubrication system. The body is composed of a conical cylinder and an inner spiral. The body provides enough space for clarifying and separating suspended materials, so that the materials can stay longer in the centrifuge cylinder to ensure the effect of separation.

Centrifuge separation principle: the suspension enters the drum through the feed pipe and the spiral discharge port. Under the action of centrifugal force generated by high-speed rotation, the solid particles with a larger proportion are deposited on the inner wall of the drum. The spiral blades in relative motion with the drum constantly scrape the solid particles deposited on the inner wall of the drum and push out the slag discharge port. After separation, the clear liquid flows out of the drum through the opening of the liquid layer regulating plate. The relative motion between the screw and the drum, or the differential speed, is achieved by the differential, the size of which is controlled by the auxiliary motor

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.

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.

Advantages :

    1. Lower cake transportation costs due to very dry solids

    2. Better recovery of nutrients due to very high separation efficiency

    3. Lower fresh water consumption compared to other processes

    4. Continuous and fully automatic operation

    5. 24 h operating reliability

    6. Optimum wear protection

    7. Energy saving design

    8.  Easy to operate

    9. Easy to maintain

    10. Simple assembly/dismantling

Company Introduction:

In 1983, Jueng engaged in solid-liquid separation, including horizontal screw centrifuges throughout all walks of life: Food waste, sewage oil, aerobic residual sludge dehydration, anaerobic residual sludge dehydration, plant extraction liquid clarification, cyanobacteria treatment, sludge dehydration, medical fermentation liquid treatment, PVC dehydration, kaolin classification, starch concentration, petroleum and petrochemical, mining, construction and other industries, to ensure the quality of the giant energy machinery.

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.