4.8.1污水的提升SewageTransfe17課件講解

4.8.1污水的提升SewageTransfer一、排水泵和排水泵房DrainagePumpsandDrainagePumpHouses民用和公共建筑的地下室、人防建筑、消防電梯底部集水坑以及工業(yè)建筑內(nèi)部標高低于室外地坪的車間和其他用水設備房間排放的污、廢水，若不能自流排至室外檢查井時，必須提升排出，以保持室內(nèi)良好的環(huán)境衛(wèi)生。Sewageandwastewaterdischargedfrombasements,civilairdefensebuildings,andsumpsatthebottomoffireelevatorsofcivilandpublicbuildings,workshopswithinternalelevationlowerthanoutdoorfloorsinindustrialbuildingsandotherwater-consumingequipmentroomsmustbeliftedfordischargetomaintaingoodindoorenvironmentalsanitationiftheycannotflowbygravitytooutdoorinspectionwells.一、排水泵和排水泵房DrainagePumpsandDrainagePumpHouses建筑內(nèi)部污廢水提升包括：Sewageandwastewatertransferinsidebuildingsinclude:01/02/污水集水池容積的確定Determinationofvolumeofsewagecatchbasin03/排水泵房的設計Designofdrainagepumphouses污水泵的選擇Selectionofsewagepumps一、排水泵和排水泵房DrainagePumpsandDrainagePumpHouses1.排水泵DrainagePumps建筑內(nèi)部污、廢水抽升常采用潛水泵、液下泵，有時也可采用臥式泵。潛水泵和液下泵無需設置引水裝置，直接浸沒在水中運行，無噪聲和振動，方便靈活，應優(yōu)先選用。當選用臥式泵進行排水，必須選用污水泵，同時應設計成自灌式。Submersiblepumpsandsubmergedpumpsareusuallyusedforsewageandwastewatertransferinsidebuildings,andsometimeshorizontalpumpsarealsoused.Submersiblepumpsandsubmergedpumpsdonotneedtobeequippedwithwater-divertingdevices.Theyaredirectlyimmersedinwaterforoperationwithoutnoiseandvibration,andtheyareflexibleandconvenienttooperate,sotheyshallbepreferred.Whenhorizontalpumpsareusedfordrainage,sewagepumpsmustbeselectedanddesignedasanautomaticwater-fillingtype.潛水泵Submersiblepump液下泵Submergedpump一、排水泵和排水泵房DrainagePumpsandDrainagePumpHouses（1）排水泵的設置Settingofdrainagepump1）公共建筑內(nèi)應以每個生活污水集水池為單元，其污水泵應設一臺備用泵。地下室、設備機房、車庫沖洗地面的排水，當有2臺及2臺以上排水泵時，可不設備用泵。Eachdomesticsewagecatchbasinshallbetakenasaunitinpublicbuildingsandthereshallbeastandbypumpforthesewagepump.Forthedrainageofwaterusedtoflushgroundinbasements,equipmentrooms,andgarages,standbypumpsmaynotbeprovidedwhentherearetwoormoredrainagepumps.2）污水泵宜獨立運行，各水泵應有獨立的吸水管。Sewagepumpsshallworkindependently,andeachpumpshallhaveanindependentsuctionpipe.3）潛水泵和液下泵在壓水管上設閥門，自灌式臥式泵在吸水管上設閥門，以便于檢修。Submersiblepumpsandsubmergedpumpsareprovidedwithvalvesonpressurizeddrainagepipeswhileautomaticwater-fillinghorizontalpumpsareprovidedwithvalvesonsuctionpipestofacilitatemaintenance.4）污水泵宜采用自動控制，當集水池不能設事故排出管時，污水泵應有不間斷的動力供應。Thesewagepumpshallbeautomaticallycontrolled.Whenthecatchbasincannotbeequippedwithanaccidentdischargepipe,thesewagepumpshallhaveanuninterruptedpowersupply.5）污水泵宜設置排水管單獨排至室外。Thesewagepumpshallbeprovidedwithadrainagepipetodischargewateroutdoorsseparately.6）2臺及2臺以上污水泵共用一條出水管時，應在每臺污水泵出水管上裝設閥門和止回閥，單臺污水泵出水管會產(chǎn)生倒灌時也應設置止回閥。Whentwoormoresewagepumpsshareoneoutletpipe,valvesandcheckvalvesshallbeinstalledontheoutletpipeofeachsewagepump.Checkvalvesshallalsobeprovidedwhenbackflowoccursintheoutletpipeofasinglesewagepump.一、排水泵和排水泵房DrainagePumpsandDrainagePumpHouses水泵揚程應按提升高度、管路系統(tǒng)水頭損失，另附加2m～3m流出水頭計算。Thesewagepumpheadshallbedeterminedbycalculating.Itisthesumoffrictionalheadlossandlocalheadlossinsuctionpipesandpressurizedpipesandstaticheadsandbecalculatedwithanadditionaloverflowheadof2~3m.（2）排水泵揚程、流量的確定Determinationofdrainagepumpheadandflow揚程Head一、排水泵和排水泵房DrainagePumpsandDrainagePumpHouses室內(nèi)污水水泵的流量應按生活排水設計秒流量選定。

Theflowofindoorsewagepumpsshallbedeterminedbasedonthedomesticdrainagedesignsecondflow.當室內(nèi)設有生活污水處理設施并設置調節(jié)池時，污水水泵的流量可按生活排水最大小時流量選定。

Theflowofsewagepumpscanbedeterminedbasedonthemaximumdomesticdrainagehourlyflowwhentherearedomesticsewagetreatmentfacilitiesandregulatingtanksindoors.當?shù)仄杭樱ǔ兀┙蛹{水箱（池）溢流水、泄空水時，應按水箱（池）溢流量、泄流量與排入集水池的其他排水量中大者選擇水泵機組。

Whenthefloorcatchpit(basin)receivesoverflowanddischargewaterfromthetank(pool),thepumpunitshallbeselectedaccordingtothegreatestoftheoverflowanddischargeofthetank(pool)andotherdrainagevolumesdischargedintothepool.流量Flow一、排水泵和排水泵房DrainagePumpsandDrainagePumpHouses（1）設置位置Position應設在靠近集水池，通風良好的地下室或底層單獨的房間內(nèi)，以控制和減少對環(huán)境的污染。Theyshallbelocatednearthewatercollectingtank,inawell-ventilatedbasement,oraseparateroomonthegroundfloortocontrolandreduceenvironmentalpollution.不得設在對衛(wèi)生環(huán)境有特殊要求的生產(chǎn)廠房和公共建筑內(nèi)或有安靜和防振要求房間的鄰近。Theyshallnotbelocatednearorbelowproductionplantsandpublicbuildingswithspecialrequirementsforthesanitaryenvironmentornearroomswithquietandanti-vibrationrequirements.2.排水泵房Drainagepumphouse一、排水泵和排水泵房DrainagePumpsandDrainagePumpHouses（2）設置要求SettingRequirements排水泵房的位置應使室內(nèi)排水管道和水泵出水管盡量簡潔，并考慮維修檢測的方便。Thedrainagepumproomshallbelocatedtomaketheindoordrainagepipesandwaterpumpoutletpipesassimpleaspossibleandconvenientformaintenanceandinspection.二、集水池的選擇Selectionofcatchbasin1.設置位置Position在地下室最低層衛(wèi)生間和淋浴間的底板下或鄰近、地下室水泵房和地下車庫內(nèi)、地下廚房和消防電梯井附近。Itissetunderornearthebottomslaboftherestroomandshowerroomonthelowestfloorofthebasement,inthebasementpumproomandundergroundgarage,andneartheundergroundkitchenandfireelevatorshaft.2.集水池有效容積Effectivevolumeofcatchbasin集水池有效容積不宜小于最大一臺污水泵5min的出水量，且污水泵每小時啟動次數(shù)不宜超過6次。Theeffectivevolumeofthewatercollectingtankshallnotbelessthanthewateroutputofthelargestsewagepumpfor5minutes,andthesewagepumpshallnotbestartedmorethan6timesperhour.二、集水池的選擇Selectionofcatchbasin3.設置要求Settingrequirements1集水池除滿足有效容積外，還應滿足水泵設置、水位控制器、格柵等安裝、檢查要求。Inadditiontomeetingtherequirementforeffectivevolume,thewatercollectingtankshallalsomeetthesettingrequirementsforthepumpaswellasinstallationandinspectionrequirementsforthewaterlevelcontroller,grille,etc.2集水池設計最低水位，應滿足水泵吸水要求。Thedesignedminimumwaterlevelofthecatchbasinshallmeetthesuctionrequirementsforthepump.3集水坑應設檢修蓋板。Thecatchpitshallbeequippedwithanaccesscover.4集水池底宜有不小于0.05坡度坡向泵位；集水坑的深度及平面尺寸，應按水泵類型而定。Thebottomofthecatchbasinshallhaveaslopenotlessthan0.05tothepumpposition;thedepthandplanesizeofthecatchpitshallbedeterminedbasedontypesofthepump.二、集水池的選擇Selectionofcatchbasin3.設置要求Settingrequirements5污水集水池宜設置池底沖洗管。Thebottomflushingpipeshallbesetupint