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1、畢業(yè)設(shè)計(jì)說明書中山市某鎮(zhèn)4.0萬m3/d污水處理廠工藝設(shè)計(jì)學(xué)院:廣州大學(xué)市政技術(shù)學(xué)院專業(yè):13環(huán)境工程指導(dǎo)老師:鄧洪秀學(xué)生:朱觀林日期:目錄摘要本次畢業(yè)設(shè)計(jì)是中山市某鎮(zhèn)4.0萬m3/d污水處理廠二期工藝設(shè)計(jì)。主要任務(wù)是完成一個(gè)該污水處理廠工藝流程初步設(shè)計(jì)和單項(xiàng)處理構(gòu)筑物設(shè)計(jì),并完成完成設(shè)計(jì)說明書,污水處理廠總平面圖,高程圖及各單項(xiàng)處理構(gòu)筑物設(shè)計(jì)圖。該污水處理廠設(shè)計(jì)規(guī)模為4萬m3/d。由于該設(shè)計(jì)對脫氮除磷有要求故應(yīng)選取二級(jí)強(qiáng)化處理,且根據(jù)該地區(qū)進(jìn)出水水質(zhì)要求,確定工藝為A2/O工藝。該工藝的生物處理部分由厭
2、氧池、缺氧池和好氧池組成。厭氧池主要功能是釋放磷,同時(shí)部分有機(jī)物進(jìn)行氨化。缺氧池的主要功能是脫氮。好氧池能夠去除BOD、硝化和吸收磷。該污水廠的污水處理流程設(shè)計(jì)為:從泵房到沉砂池,進(jìn)入A2/O反應(yīng)池,進(jìn)入輻流式二次沉淀池,再進(jìn)入消毒池,最后出水;污泥流程設(shè)計(jì)為:從反應(yīng)池排出的剩余污泥進(jìn)入集泥配水井,再由污水泵送入濃縮池,然后進(jìn)入貯泥池,再進(jìn)入脫水機(jī)房脫水,最后外運(yùn)處置。關(guān)鍵詞:城鎮(zhèn)污水;脫氮除磷;二級(jí)強(qiáng)化處理;A2/O工藝;工藝設(shè)計(jì)ABSTRACTThetopicofthisgraduatedesigni
3、saboutthedesignofthesewagetreatmentplantintheareaofzhongshan.Themaintaskistheprimarydesignoftheplantandthesingleitemprocessingconstructiondrawingdesign.Theharvestoftheprimarydesignarenotonlydesignbook、siteplanofthesewagetreatmentplant、theelevationdrawings
4、ofthetreatmentofsludgeandsewagebutalsothesingleitemprocessingconstructiondrawingdesign.Theconstructionofthisplantis40000tonsperday.Causethisdesignhasdemandsontakingoffthenitrogenandthephosphorus,theplantisdesignedtotakeupgradedsecondarytreatment;andbecaus
5、eofthewaterqualityoftheinflowandtheizumi,thisdesigndecidestousetheAnaerobic-Anoxic-Oxic.ThebiologicaltreatmentpartoftheAnaerobic-Anoxic-Oxicconsistsofanaerobicpond,anoxicpond,andaerobicpond.Theanaerobictankreleasesphosphorus,atthesametimesomepartsoforgani
6、cmatterwereammoniated.Themainfunctionoftheanoxicpondisdenitrification.Theaerobicpondismultifunctional;itcanremoveBOD,makenitratlonreactionsandabsorbphosphorus.Theprocessofthesewageintheplantisthat:thesewagerunsfrompumphousetosandsinkingpond,entersthepondo
7、fsedimentationtank,entersdisinfectionpond,atlastletsout.Theprocessofthesludgeisthat:surplussludgefromthesedimentationtankentersconcentrationpond,enterssludgestoragetank,thenentersdehydrationmachineroom,atlastitiscarriedoutoftheplant.Keywords:townsewage;ta
8、kingoffthenitrogenandthephosphorus;upgradedsecondarytreatment;theAnaerobic-Anoxic-Oxic;processdesign前言水是人民生活和國民經(jīng)濟(jì)建設(shè)不可或缺的寶貴資源。隨著人口數(shù)量的上升和工農(nóng)業(yè)的迅速發(fā)展,人類對水的依賴也越來越強(qiáng)了,然而人類的各種活動(dòng)已經(jīng)對水環(huán)境造成了一定的污染,并且污染越來越嚴(yán)重,使得地球上許多地區(qū)正面臨著水污染危害和水資源缺