2010 waters - activated carbon filter

8/13/2019 2010 Waters - Activated Carbon Filter

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Identification TB-008December 2010

Replaces : None

Activated carbon filter

Classification Document type: Guideline

Hierarchical level: Core Document

Confidentiality: Yellow Class

Copri!"t The content of this document is a trade secret. It may not be reproduced distributed or disclosed tothird parties !ithout proper authorisation. "ll ri#hts belon# to $estl% &aters '.T. (21)0 Issy*+es*'oulineau, -rance.

$estl% &aters '.T.

Aut"or#s$ /TC &ater * n#ineerin# roup 3. Davy

Approver#s$ /TC &ater * n#ineerin# roup 4. 4aby

Table of contents

%arnin!: this document provides an overvie! of the activated carbon filtertechnolo#y. -or any ne! !ater treatment processes or any modification ofe,istin# !ater treatment processes please contact the /TC &ater * n#ineerin#roup.


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Introduction

&cope This document refers to the !ater treatment process 5and the associatede6uipment5 that use filtration andor adsorption on activated carbon:

"ctivatedcarbon

'aterial manufactured from carbon.

-iltration /hysical separation process to remove elements from !ater.

"dsorption/roperty of some materials more or less reversibly fi,in#ions or molecules on their surfaces.

&aterIn product !ater: !ater that !ill be bottled or used to preparea bevera#e 5immediately after or after further treatment.

'urpose oft"isdocument

This document !ill provide you !ith:

definitions and basic concepts lin7ed to activated carbon filter8

the principles of activated carbon filtration and the main components of

activated carbon unit8

#eneral #uidelines for activated carbon filter8

information on potential ha9ards and ho! to prevent them8

reference documents that demonstrate the properties of activated carbon

filtration.

$ote: this document has not to be used for purc"asin!purposes. In such acase please refer to &ater Resources Technical 4tandards.

Tar!etaudience

This document is addressed to corporate 9one mar7et and factory:

&ater Resources 'ana#ers8

&ater Resources Champions8

&ater Treatment 4pecialists and Hydro#eolo#ists

uality "ssurance roup 'T.

N% (eferencedocuments

Water Resources Technical Standards - Process (WRTS_P_011) Naturalorganic matter removalWater Resources Technical Standards - Process (WRTS_P_020) olatileorganic com!ounds removal

It should be hi#hli#hted that for the three follo!in# applications ;ammonia ironand man#anese removal< activated carbon is not the preferable choice.Water Resources Technical Standards - Process (WRTS_P_001) "mmoniaremovalWater Resources Technical Standards - Process (WRTS_P_00#) $ronremovalWater Resources Technical Standards - Process (WRTS_P_00%) &anganeseremoval

T=*00> December 2010 /TC &ater * n#ineerin# roup

$estl% &aters '.T. 'ay not be divul#ed to third parties !ithout proper authorisation


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Concepts and Definitions

Activated Carbon Definition and )anufacturin!

Activated

carbon

"ctivated carbon also called activated charcoal or activated coal is a #eneral

term !hich covers carbon material mostly derived from charcoal."ctivated carbon is a microporous form of carbon manufactured from peat!ood li#nite coal or coconutshell. "ctivation is achieved !ith steam or via achemical process.

Activation "ctivated carbon is #enerally produced in t!o different processes:

/hysical activation:

It is #enerally done by usin# a combination of the follo!in# processes:1. 'aroniation*a process !here material !ith carbon content is

pyrolysed at temperatures in the ran#e of ?00*(00@C in the absence of

air ;usually in inert atmosphere !ith #ases li7e nitro#en or ar#on21

Components of Activated Carbon *ilters

)aincompone

nts

"n activated carbon filter is composed of the main follo!in# parts:

Inlet

water

2utlet

water

=ed filter

pressure vessel

$o99les

"ctivated

carbon

4terile air for

bac7!ash

Repartition

plate

=ac7!ashin#

!ater inlet

=ac7!ashin#

!ater outlet

"ir release

;vent valve December 2010 /TC &ater * n#ineerin# roup



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Components of Activated Carbon *ilters Continued

Bed filter 3detailed

view

-our different areas can be distin#uished in the activated carbon pressurevessel as described belo!:

Inlet !ater

Mutlet !ater

"ctivated

carbon

"ir release

No))les

Total

Hei#htNseful

Hei#ht

Head

space

"ctivated

carbon layer

F =ed

volume

Re!artition !lateInlet !ater

Mutlet !ater

"ctivated

carbon

"ir release

No))les

Total

Hei#htNseful

Hei#ht

Head

space

"ctivated

carbon layer

F =ed

volume

Re!artition !late

'art *unctionTotal hei#ht Hei#ht from the bottom to the top of the vessel.

Nseful hei#ht Hei#ht from the floor ;plate e6uipped !ith no99les< to therepartition plate.

Head space Hei#ht from the top of the activated carbon layer to therepartition plate. This free space allo!s bed e,tensiondurin# bac7!ashin# !ith minimum head losses.

"ctivated carbonlayer or bedvolume

Hei#ht of the activated carbon layer from the floor ;platee6uipped !ith no99les December 2010 /TC &ater * n#ineerin# roup



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Guidelines

Tec"nical Guidelines

Guidelines "n activated carbon unit should comply !ith the follo!in# set of #uidelines:

'ain si9in# data for the activated carbon filter Recommended components.

)ain si+in!data 3Activatedcarbon filter

The activated carbon filter is a bed filter pressure vessel e6uipped !ith no99leson the floor and !ith all the devices re6uired for bac7!ashin# and disinfection.

"ccordin# to the !ater treatment application the flo! rate and the technicalconstraints on site one filter or t!o filters in series or parallel can beimplemented.

-or !ater treatment applications the follo!in# si9in# data are usually applied:

'arameters Guideline values

-iltration rate ;mh< A *1A

mpty =ed Contact Time ;min December 2010 /TC &ater * n#ineerin# roup



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Good 2perational 'ractices Continued

Activated carbon filter loadin! procedure ;continued December 2010 /TC &ater * n#ineerin# roup



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Trouble-s"ootin!

Trouble-s"ootin!

The main trouble*shootin#s that can affect the process are listed belo!:

'articles of ACatt"eoutlet oft"efilterdurin! t"eadso

rptionccle

/ossible causes "ctions

=ac7!ash is too stron#andor the final rinse at theend of a bac7!ash is tooshort

Mne;or several

2010 waters - activated carbon filter

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