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1、工程碩士⑧謝己工工誓女孽碩士學(xué)位論文摘要我國(guó)是世界上柑橘罐頭生產(chǎn)量最大的國(guó)家。由于柑橘罐頭加工廢水具有水量大、懸浮物多,含果膠難以降解等特點(diǎn),一般的生化處理工藝難以適應(yīng)實(shí)際運(yùn)行需要。因此,開展柑橘罐頭加工廢水的研究具有很好的實(shí)際意義,推廣以后可以有效解決柑橘罐頭加工行業(yè)900萬(wàn)噸廢水的處理難題。本文通過(guò)對(duì)柑橘罐頭生產(chǎn)企業(yè)的調(diào)查,以及柑橘罐頭生產(chǎn)廢水的特點(diǎn)分析,提出了清潔生產(chǎn)的方法;針對(duì)現(xiàn)有處理工藝存在的缺點(diǎn),結(jié)合實(shí)際,提出采用酸化水解+接觸氧化處理工藝;通過(guò)測(cè)試、比較不同處理工序、不同反應(yīng)條件下的處理效果,實(shí)驗(yàn)結(jié)果表明,當(dāng)進(jìn)水COD=一<1000mg/L、BODs一<48
2、6mg/L、SS≤250mg/L時(shí),處理后最終出水水質(zhì)達(dá)到綜合污水排放一級(jí)標(biāo)準(zhǔn)(GB8978.1996),最佳水力停留時(shí)間組合為酸化水解8小時(shí),接觸氧化10小時(shí),完全可以克服果膠對(duì)生化處理帶來(lái)的不利影響;其柑橘加工廢水的反應(yīng)速率方程為U---98.2S/(16.6心)。最后根據(jù)試驗(yàn)研究結(jié)果,結(jié)合工程實(shí)際,以一家中型柑橘罐頭加工企業(yè)為例,按照清潔生產(chǎn)和廢物綜合利用的思路,設(shè)計(jì)一套處理工藝,其廢水處理的直接運(yùn)行成本為1.16元/m3。關(guān)鍵詞,柑橘,加工,廢水,研究一?~J??????。??studyonthetreatmentofwastewaterfromorangecan
3、productionAbstractChinaisthecountrywiththelargestorangeCallproductionintheworld.ItiSverydi伍cultforthetraditionalbio—treatmenttotreatthepracticalwastewaterbecauseofthelargeamountofwastewater,hi曲SSanddifficultdegradationofpectin.Soitisimportanttocarryonthestudyonthetreatmentofthewastewaterf
4、romtheorangecanproduction.Theresultcouldbeputintowideusetotreat9,000,000tonsofwastewaterfromtheorangeCanprocessinginourcountry.Inthispaper,thecleanerproductionproposalwasofferedthoughthesurveyofenterprisesoforangeCanproductionandanalysisofthewastewaterpropertiesfromtheprocessing.Thetechno
5、logyofacidificationhydrolysiscombinedwiththecontactingoxidationwasofferedaccordingthepracticeandtheshortagesofthepresentprocess.Thesuitableoperationalparameterswereachievedbythetests.Theemciencyoftreatmentwascomparedindifferantprocessesandconditions.TheresultsshownthatitiSfeasibletoadoptt
6、heprocessofacidificationhydrolysiscombinedwiththecontactingoxidationtotreatthewastewaterfromtheorangeCallprocessing.珊lentheCODWaslessthan1000mg幾,BOD5lessthan486mg甩andSSlessthan250mg/Lininfluent,thewaterqualityineffluentcouldreachthecomprehensivedischargingstandardoffirstrank(GB8978—1996)a
7、ndthebestHRTfortheacidificationhydrolysisWas8hoursandforthecontactingoxidationwas10hours.nesuitableHRTcouldovercomethebadlyeffectfromthedi伍cultbio-degradationofpectin.ThekineticmodelwasU=98.2S/(16.6·雷)accordingtothedatafromtheexperiment.Accordingtotheresultsandengin