Settling centrifugal( bể lắng ly tâm )

Presentation Feed Water treatment Settling Centrifugal 1 Content Introduction Principle of operation Advantages and disadvantages 2 Introduction Vocabulary Deposition efficiency Hiệu quả lắng Autumn Ditch Máng thu Serrated trough Máng răng cưa Foam Wipers Cần gạt bọt Mud Wipers Cánh gạt bùn Floating Foam Rim Vành chặn bọt nổi Movement Kit Bộ truyền động Blade of scraper lưỡi dao cạo ( lưỡi cạp ) Rake arm cánh tay cào Density current baffle Mật độ hiện tại vách ngăn Scum skimmer váng hớt Drive kh.

Presentation Feed Water treatment

Settling Centrifugal

1

Introduction

Principle of operation

Advantages and disadvantages

Vocabulary

Deposition efficiency: Hiệu quả lắng

Autumn Ditch: Máng thu

Serrated trough: Máng răng cưa

Foam Wipers: Cần gạt bọt

Mud Wipers: Cánh gạt bùn

Floating Foam Rim: Vành chặn bọt nổi

Movement Kit: Bộ truyền động

Blade of scraper : lưỡi dao cạo ( lưỡi cạp )

Rake arm: cánh tay cào

Density current baffle: Mật độ hiện tại vách ngăn

Scum skimmer : váng hớt

Drive: khẩn cấp (trong công việc)

Vocabulary

Water collection pipe after deposition: ống thu nước sau lắng

Whirlpool: Xoáy nước

Floating Sludge Removal Tube: Ngăn thu bọt nổi

Centrifugal clarifier : Bể lắng ly tâm

Suction pump: máy hút , bơm

Hydrostatic discharge : phóng tĩnh điện

Feed well: cung cấp tốt

Overflow weir: đập tràn

Characteristics and Composition

• Characteristics:

- This type of tank has a circular shape

- This type of sedimentation tank is applied to

feedwater flow greater than 20000m3/day

- The depth of the tank is from 5-7m The diameter of

the wipers is 20m

- The smallest speed is in the tank wall

- The flow velocity in the centrifugal deposition tank at

the R/2 center is not greater than 10 mm/s

- The deposition efficiency is 60%

Introduction

Settling Centrifugal

Characteristics and Composition

• Composition:

- Settling Centrifugal tanks are composed of:

Ø Ducting water into the tank

Ø Water Distribution Center Pipe

Ø Water collection pipe after deposition

Ø Floating Sludge Removal Tube

Ø Autumn Ditch

Ø Serrated trough

Ø Foam Wipers

Ø Mud Wipers

Ø Floating Foam Rim

Ø Movement Kit

Location

In water treatment the tank level is usually placed at the back of the reaction tank an

d in front of the filter tank

Introduction

Ø Used to store feedwater at a

certain time so that the suspended

substances in the feedwater can

settle to the bottom.

Ø This type of tank helps to remove

impurities and suspended matter

from 16-60 meters in diameter.

Introduction

Principle of operation

- The water after being pumped into the tank will

be a combination of mud and water Thanks to the

force of force, the mud and water will be

separated, the heavier sludge will settle to the

bottom of the tank, the lighter water will stay on

top and the machines will be treated in the next

stage

- The bottom vanes are diagonal and point towards the

center of the bottom of the tank When the vane

operates, the sludge will be pushed towards the

center of the bottom of the tank

There are 3 stages:

ØStages 1: Feedwater is led into the tank by the water pipe

ØStages 2: Sludge is brought to the sump located in the middle of the tank by the sludge vanes with a rotational speed of 3 rpm The sludge can slide down on its own because the slope of the bottom of the tank is usually 0.1% to 0.3% and not less than 5% Sludge is discharged from the centrifugal clarifier by hydrostatic discharge system or by suction pump

ØStages 3: To improve efficiency in centrifuge tanks, it is common to design wastewater distribution and

collection systems moving together in the tank This system has movements from 3 rpm to 4 rpm At this time,

Principle of operation

Advantages and disadvantages

- Has a compact design and simple

operation.

- It’s doesn’t cost a lot of land to build.

- Building materials do not affect the

health of the user.

- High construction costs.

- Many whirlpool areas in the sediment collection pit, it will reduce the

working performance of the tank.