混凝剂的配置和投加PreparationandDosing

混凝剂的配置和投加

PreparationandDosingofCoagulant水处理过程Watertreatmentprocess产生

for水

Water药剂

Chemicals凝聚

Agglomeration絮凝

Flocculation混凝剂的配置和投加

PreparationandDosingofCoagulant混凝过程

Coagulationprocess药剂的溶解

Dissolving配置

Preparing计量

Measuring投加

Dosing混合

Mixing反应

Reaction混凝剂的配置和投加

PreparationandDosingofCoagulant混凝剂的投加方式：

Dosingmodes:干法（固体）投加

Dry(solid)dosing湿法（液体）投加

Wet(liquid)dosing将药剂直接投放到被处理的水中。干法投加劳动强度大，投配量难掌握和控制，对搅拌设备要求高。

Directlyaddthechemicals

intothewatertobetreated.Drydosingrequireshighlaborintensityandhighstandardstirringequipment,andthedosageisdifficulttocontrol.目前普遍采用的投加形式，将固体溶解后配成一定浓度的溶液或将成品液体药剂投入原水中

Acommonlyuseddosingmodeatpresent,inwhichthesolidsaredissolvedintoasolutionwithacertainconcentration,orthefinishedliquidsolution

isaddedintotherawwater.混凝剂的配置和投加

PreparationandDosingofCoagulant湿法投加溶解和投加过程：

Wetdosing&dissolutionanddosingprocess:溶液池

Solutiontank定量控制设备

Quantitycontrolequipment药剂

Chemicals溶解池

Dissolvingtank水

Water水

Water投药设备

Dosing

equipment混合设备

MixingequipmentCONTENTS目录混凝剂的溶解和溶液配制

Dissolutionofcoagulantandpreparationofsolution混凝剂投加

Dosingofcoagulant混凝剂投加量自动控制

Automaticcontrolofcoagulantdosage01混凝剂的溶解

和溶液配制

Dissolutionofcoagulant

andpreparationofsolution混凝剂的配置和投加

PreparationandDosingofCoagulant混凝剂的溶解和溶液配制

Dissolutionofcoagulantandpreparationofsolution混凝剂的溶解

DissolutionofCoagulant大中型水厂

Large-

to

medium-sizedwaterplants混凝土溶解池+搅拌装置

Concretedissolvingtank+stirringdevice设2池（2格）交替使用

2tanks(2cells)foralternateuse小型水厂

Smallwaterplants陶缸

Potterypots混凝剂溶液配制

Preparationofcoagulantsolution溶液池

Solutiontank混凝剂溶解和溶液配制

Dissolutionofcoagulantandpreparationofsolution混凝剂的配置和投加

PreparationandDosingofCoagulant搅拌目的

Purposeofstirring为了加速药剂的溶解

Tospeedup

thedissolution机械搅拌

Mechanicalstirring压缩空气搅拌

Compressedairstirring水力搅拌

Hydraulicstirring药剂量小

Smalldosag药剂量大

Largedosage混凝剂溶解和溶液配制

CoagulantDissolutionandSolutionPreparation混凝剂的配置和投加

PreparationandDosingofCoagulant电动机驱动桨板

Motordrivenpaddle涡轮搅拌机

Turbineagitator机械搅拌

Mechanicalstirring摆线针轮搅拌机

Cycloidalpinwheelagitator.进口摆线针轮搅拌机

Importedcycloidalpinwheelagitator35W单相搅拌机

35Wsingle-phaseagitator磁性翻板液位计

Magneticflap

level

gauge混凝剂溶解和溶液配制

CoagulantDissolutionandSolutionPreparation混凝剂的配置和投加

PreparationandDosingofCoagulant压缩空气搅拌

Compressedairstirring不与溶液直接接触

Notindirectcontactwithsolution动力消耗较大

Highpowerconsumption使用维修方便

Convenientuseandmaintenance溶解速度稍慢

SlightlyslowerdissolutionrateGrilleAirductEffluentpipeGasinlet

pipeInfluentpipeSlagdischargepipe压缩空气搅拌调制

Compressedairstirringandpreparation混凝剂溶解和溶液配制

CoagulantDissolutionandSolutionPreparation混凝剂的配置和投加

PreparationandDosingofCoagulant水泵搅拌

Waterpumpstirring用水泵自溶解池抽水再送回溶解池，属于水力搅拌。

Themode,inwhichwaterispumpedfromthedissolvingtankbyawaterpumpandthensentbacktothedissolvingtank,belongstohydraulicstirring.利用水厂二级泵站高压水冲动药剂，用于中小型水厂和易溶混凝剂。

Thehigh-pressurewaterfromthesecondarypumpstationofthewaterplantisusedtoflushthereagent.Thismodeisusedinsmallandmedium-sizedwaterplantsandforeasilysolublecoagulants.使用FeCl3时尤需注意。而且FeCl3溶解时放出大量热，当溶液浓度为20%时，溶液温度可达70度左右，这一点也应注意。

AttentionshouldbepaidspecialwhenusingFeCl3.Inaddition,whenFeCl3

dissolves,itwillreleasealargeamountofheat.Whenthesolutionconcentrationis20%,thesolutiontemperaturecanreachabout70°C.Thisshouldbenoted.2溶解池、搅拌设备及管配件等，均应有防腐设施或采用防腐材料。

Thedissolvingtank,stirringequipmentandpipefittingsshallbeprovidedwithanti-corrosionfacilitiesormaterials.1混凝剂溶解和溶液配制

CoagulantDissolutionandSolutionPreparation混凝剂的配置和投加

PreparationandDosingofCoagulant注意Attention混凝剂溶解和溶液配制

CoagulantDissolutionandSolutionPreparation混凝剂的配置和投加

PreparationandDosingofCoagulant溶解池

Dissolvingtank地面

Ground加药间

Dosingroom溶解池建于地面以下便于操作

Dissolvingtanksareconstructedbelowgroundlevelforeaseofoperation.通常设在加药间的底层；

Itisusuallysetatthebottomofthedosingroom;池顶高出地面约0.2m左右；

Thetopofthetankshallbeabout0.2mabovetheground;底坡应大于2%；

Thebottomslopeshallbegreaterthan2%;池底设排渣管；

Aslagdischargepipeshallbesetatthebottomofthetank;超高为0.2～0.3m。

Thesuperelevationshallbe0.2~0.3m.混凝剂溶解和溶液配制

CoagulantDissolutionandSolutionPreparation混凝剂的配置和投加

PreparationandDosingofCoagulant溶解池的药剂送往溶液池进行配制

Thereagentinthedissolvingtankissentto

thesolutiontankforpreparation溶液池：配制一定浓度溶液的设施

Solutiontankisafacilityforpreparingsolutionswithcertainconcentration.耐酸泵或射流泵将溶解池内的浓药液送入溶液池

Theconcentratedsolutioninthedissolvingtankissenttothesolutiontankbyacid-resistantpumporjetpump.同时用自来水稀释到所需浓度以备投加

Atthesametime,theconcentratedsolutionisdilutedwithtapwatertotherequiredconcentrationfordosing.W1=（0.2～0.3）W2混凝剂溶解和溶液配制

CoagulantDissolutionandSolutionPreparation混凝剂的配置和投加

PreparationandDosingofCoagulant溶解池容积W1按下式计算：

ThevolumeW1ofthedissolvingtankshallbecalculatedaccordingtothefollowingformula:式中：W2为溶液池容积。

Where:W2isthevolumeofsolutiontank.根据经验：

Accordingtoexperience,中型水厂溶解池容积为0.5～0.9m3/（万m3．d），

thevolumeofdissolvingtankinamedium-sizedwaterplantis0.5~0