删除或更新信息,请邮件至freekaoyan#163.com(#换成@)

进水C/P对SNEDPR系统脱氮除磷性能的影响

本站小编 Free考研考试/2021-12-31

闂佽崵鍠愬ú鎴︽倿閿旂晫鐝舵慨妞诲亾闁硅櫕鎹囧畷姗€顢旈崱妤冨幐闂備礁鍚嬪姗€宕銏㈡殾闁靛濡囬埢鏃堟煙閹规劕鐨洪柣鐔风秺閹綊宕惰閳锋梹绻濋埀顒勫焺閸愯法鐭楀┑鈽嗗灣绾爼宕戦幘瀵哥懝闁逞屽墴閵嗗倿鎳為妷锕€鍔呴梺鍦亾婢у酣宕戦幘瀛樺缂佹稑顑嗙紞濠冧繆椤愩倕顣奸柛鈺侊功濡叉劙宕归锝勬唉濠电偛妫欓幐绋库枍閿熺姵鍋g憸宥団偓姘煎幘閼洪亶顢欓悙顒佸劚闂佸憡渚楅崢鐓庮嚕閸ф鐓ユ繛鎴烆殘椤︼附绻濋埀顒勵敂閸℃瑦锛忛梺鍓茬厛閸犳牜鏁幎鑺ュ仯闁归偊鍓涚粔鐑樹繆閹绘帒顏柟椋庡У鐎电厧鈻庨幋鐙呯床
2濠电偞鍨堕幐绋棵洪妸鈺嬬稏闁圭儤顨嗛崵鈧梺鍛婂姦娴滅偤宕洪敓鐘崇厾闁哄鐏濋弳娆戔偓瑙勬磸閸庣敻骞冩禒瀣棃婵炴垶纰嶉幉銈嗙箾閹寸偞顥栭悹渚婄悼濡叉劕鈻庨幇鍓佺煑濠碘槅鍨靛▍锝咁潩閵娾晜鐓忛柛鈩冩礃缁佺増銇勯銏╁剱闁挎稒鍔欓獮瀣枎鐏炴垝澹曟繛杈剧悼鏋€殿喖鐏濋埞鎴﹀磼濞戣鲸鐣界紓浣风贰閸嬪﹤顕i鈧埢搴♀枎閹寸媭妲撮梻浣告啞閻熴儵鏁冮妶鍜佸晠濠电姵姘ㄥ畵渚€鎮楅棃娑欏暈闁糕晛鍊歌灋闁绘鐗為崗顒傜磼鏉堛劎绠撻柍钘夘樀閹粙宕归銈忕矗547闂備礁婀遍。浠嬪磻閹剧粯鈷掗柛鏇楁櫅閻忣亪鏌eΔ瀣4濠电偞鍨堕幐绋棵洪敐鍥╃闁瑰鍋熼埢鏃€銇勮箛鎾寸闁稿鎹囧畷姗€顢旈崱妤冨幐闂備礁鍚嬪姗€宕銏㈡殾闁靛濡囬埢鏃堟煙閹规劕鐨洪柣鐔锋贡缁辨帗寰勭€n亞浠煎┑鐐跺紦閸楄櫕淇婄€涙ɑ濯撮悷娆欑到娴滈箖鏌涢幇鍏哥敖闁糕晪绻濋弻娑滅疀閿濆懎顫╅梺鍛婄懕缁辨洟骞忛悩璇茬闁告侗鍨抽ˇ鈺呮⒑鐞涒€充壕闂佸湱枪缁ㄨ偐绮径鎰厾闁哄嫬绻掔花鎸庛亜閺囨ê鐏茬€殿噮鍋婂璺衡枎閹兾ら梻浣瑰缁嬫垿藝椤撱垹鐒垫い鎺戯攻鐎氾拷40缂傚倷绀侀ˇ顖滅矓瀹曞洨绠旈柟鎯ь嚟閳绘梹鎱ㄥ鈧涵鎼佸极鐎n亶鐔嗛悹鍥b偓鍏呭缂備浇椴搁悷鈺呭蓟瀹€鍕闁挎繂娲犻崑鎾绘惞鐟欏嫬鍘归梺鍝勬川閸庢垹妲愬⿰鍫熺厪闁糕剝娲栫花绫匒闂備線娼уΛ鏃傜矆娴h鐟拔旈崨顔规寖闂佸憡渚楅崢钘夆枍瀹€鍕厱闁哄啯鎸剧壕鎸庛亜閵忥紕顣茬紒鏃傚枛椤㈡洟鎮╅顫婵炶揪缍€椤鎮¢埀顒勬⒒閸屾艾鈧粙顢欐繝鍕潟闁割偅娲栫粻缁樸亜閹捐泛顎岄柡浣割儏椤法鎷犻垾鍏呯按闂侀€炲苯鍘搁柤鍐茬埣婵$敻鎮欓弶鎴殼濠殿喗锕╅崗娑氭閿濆悿褰掓晲閸℃瑧鐓傚銈冨灪绾板秶绮╅悢纰辨晝闁靛牆娲﹂幆锝夋⒑閹稿海鈽夋い锔诲弮閸┾偓妞ゆ帒锕ョ€氾拷28缂傚倷绶¢崑澶愵敋瑜旈獮鍐箻閸撲線鈹忔繝銏f硾楗挳宕濋崨瀛樼厱闁哄啠鍋撶紒瀣崌瀵偊鎮介崹顐㈠幑闂佸搫娲﹀銊╂偡閳轰讲妲堥柟鐐綑閹兼悂鏌嶈閸撱劑骞忛敓锟�1130缂傚倷绀侀ˇ顖滅矓閸撲礁鍨濋柨鐔哄Т缁€鍌炴煕濞戞﹫鏀绘繛鍫濈焸閺屸剝寰勭€n亜顫囬梺閫炲苯澧柛濠勬嚀铻為柕鍫濇处婵ジ鏌i幋鐏活亝绂嶉崼鏇熺厸闁告洟娼ч悘锝嗙節閳ь剟鍩勯崘璺ㄧ煑濠碘槅鍨靛畷闈涱啅濠靛牏纾藉ù锝嚽归弳鏃堟煃瑜滈崗娑氭濮樿翰鈧倿鎳為妷锕€鍔呴梺瑙勫劤閸熷潡鎮¢弴鐐嶆盯鎮ч崼顒€鍙曠紓浣介哺缁诲啫岣跨拠鍙傜喓绱掑Ο鐑囩畱椤法鎹勯搹鍓愶紕绱掗垾鍐差伃鐎殿噮鍋勯埢搴ㄥ箛椤撶姷鈻岄梻浣瑰缁嬫垶绺介弮鍌滃崥閻庢稒岣块埢鏃堟煟濮橆剚顫漃濠电偞娼欓崥瀣嚌妤e啫绠熼柟鎯版闁裤倝鏌涢妷鎴濆暢椤斿鈹戦悩娴嬫)闁靛牆鎳庨弸娆撴⒑鐠団€虫灁闁告柨楠搁埢鎾诲箣閿旂瓔姊块梺閫炲苯澧弫鍫ユ煕鐏炲帺姘跺磻閹剧粯鏅搁柨鐕傛嫹
中文关键词C/P同步硝化内源反硝化(SNED)反硝化除磷聚磷菌(PAOs)反硝化聚糖菌(DGAOs) 英文关键词C/Psimultaneous nitrification-endogenous denitrification (SNED)denitrification phosphorus removalphosphorus accumulating organisms (PAOs)denitrification glycogen accumulating organisms (DGAOs) 中文摘要 为了解不同进水C/P条件下同步硝化内源反硝化除磷(SNEDPR)的脱氮除磷特性.以实际城市污水为处理对象,采用延时厌氧(180 min)/低氧(溶解氧0.5~1.0mg·L-1)运行的序批式反应器(SBR),考察了进水C/P(分别为60、30、20、15、10)对系统C、N、P去除特性的影响.结果表明:适当降低进水C/P(由60降至30)有利于提高系统内PAOs竞争优势.当C/P为30时系统除磷性能最高,厌氧段释磷速率(PRR)和好氧段吸磷速率(PUR,以P/MLSS计,下同)分别高达3.5 mg·(g·h)-1和4.2 mg·(g·h)-1,出水PO43--P浓度均低于0.3mg·L-1,且PPAO,An高达88.1%;但进一步降低进水C/P至10时,PO43--P去除率和PPAO,An分别由38.1%和82.4%降低至3.1%和5.3%,PRR和PUR分别仅为0.2 mg·(g·h)-1和0.24 mg·(g·h)-1,系统表现出较差的除磷性能.降低C/P对系统COD去除性能没有影响,COD去除率稳定在85%左右.此外,当C/P由60降低至20时,系统硝化性能变差,表现为出水NH4+-N和NO2--N浓度分别由0和6.9mg·L-1升高至5.1mg·L-1和16.2mg·L-1;而当C/P进一步降低至10时,系统硝化性能得以恢复,但亚硝积累特性遭到破坏,表现为出水NH4+-N和NO2--N浓度逐渐降低为0,但出水NO3--N浓度由0.08mg·L-1升高至14.1mg·L-1.SNED率先由62.1%降低为36.4%后又逐渐提高至56.4%.C/P低于15时,有利于提高GAOs的竞争优势,且C/P由20降至10时系统脱氮性能得以恢复,原因在于GAOs内源反硝化作用的增强. 英文摘要 This study focuses on the nitrogen (N) and phosphorus (P) removal characteristics in a simultaneous nitrification-endogenous denitrification and phosphorus removal (SNEDPR) system at different influent C/P ratios. An extended anaerobic/low aerobic (dissolved oxygen:0.5-1.0 mg·L-1) sequencing batch reactor (SBR) fed with municipal sewage was studied by adjusting different C/P ratios (10, 15, 20, 30, and 60). The experimental results show that the proper reduction of the influent C/P ratio (C/P ratio reduced from 60 to 30) enhances the competitive advantages of phosphorus-accumulating organisms (PAOs) in the SNEDPR system. The highest phosphorus removal efficiency was achieved at a C/P ratio of 30, with the anaerobic phosphorus release rate (PRR) and aerobic phosphorus uptake rate (PUR, used as P/MLSS) reaching 3.5 mg·(g·h)-1 and 4.2 mg·(g·h)-1 respectively, and an average effluent PO43--P concentration below 0.3 mg·L-1. The percentage of PAOs contributing to the storage of endogenesis carbon (PPAO, An) reached 88.1%. However, a poor phosphorus removal performance was observed with further reduction of the influent C/P ratios to 10; both the PO43--P removal efficiency and PPAO, An decreased from 38.1% and 82.4% to 3.1% and 5.3%, respectively. The PRR and PUR were 0.2 mg·(g·h)-1 and 0.24 mg·(g·h)-1, respectively. The COD removal performance was not affected by the decreasing influent C/P ratios; the average COD removal efficiency stabilized at 85%. In addition, the nitrification performance became worse with decreasing C/P ratios (from 60 to 20) because the effluent NH4+-N and NO2--N concentrations increased from 0 and 6.9 mg·L-1 to 5.1 mg·L-1 and 16.2 mg·L-1, respectively. The nitrificaton performance recovered when the C/P ratios further decreased to 10, but the nitrite accumulation was disturbed as both the effluent NH4+-N and NO2--N concentrations reduced to 0. The effluent NO3--N concentration increased from 0.08 mg·L-1 to 14.1 mg·L-1. The SNED efficiency first decreased from 62.1% to 36.4% and then increased to 56.4%. The advantageous competition of glycogen accumulating organisms (GAOs) improved when the influent C/P ratio was lower than 15. The enhancement of the endogenous denitrification ability of GAOs might explain the recovery denitrification performance of the system when the influent C/P ratios decreased from 20 to 10.

PDF全文下载地址:

https://www.hjkx.ac.cn/hjkx/ch/reader/create_pdf.aspx?file_no=20190139&flag=1&journal_id=hjkx&year_id=2019

相关话题/青岛大学 环境科学 工程学院 系统 中文

闂備胶鎳撻崥瀣垝鎼淬劌纾奸柨鐕傛嫹2濠电偞鍨堕幐绋棵洪妸鈺嬬稏闁圭儤顨嗛崵鈧梺鍛婂姦娴滅偤宕洪敓鐘崇厾闁哄鐏濋弳銏ゆ煟閿曗偓椤︾敻骞冩禒瀣棃婵炴垶纰嶉幉銈嗙箾閹寸偞顥栭悹渚婄悼濡叉劕鈻庨幇鍓佺煑濠碘槅鍨靛▍锝咁潩閵娾晜鐓ユ繛鎴炨缚閻掗攱銇勯銏╁剱闁挎稒鍔欓獮瀣敍濠婂拋妲撮梻浣呵圭换鎰矓閻戣棄鍨傞柛宀€鍋為崑銊╂煥閻曞倹瀚�
濠电姰鍨归悥銏ゅ炊瑜嶆慨銈夋⒑閸涘﹤绗掓俊顐g洴椤㈡棃濮€閵堝棭妫勯柣搴秵閸犳牠宕㈤幘顔界厸闁告洟娼ч悘锝嗐亜閹存繃澶勭紒瀣樀閸┾偓妞ゆ巻鍋撻柍璇查叄濡鹃亶鏌嶈閸撴瑩宕导瀛樺亯婵炲樊浜濋弲顒勬倶閻愮數鎽傞柛銈囧Т闇夋繝濠傚暣椤庢銇勯埞顓炲婵挳鏌¢崶鈺佹灁闁告瑢鍋撻梻浣哥秺濞佳嗐亹閻愮數绠旈柟鎯ь嚟閳绘梹鎱ㄥΟ璇插闁搞倧绠撻弻鐔虹矙閹稿孩鎮欓梺浼欑秮缁犳牕顕i鈶╂瀻闁归偊鍘剧粙鍕⒑閹稿海鈽夐柡鍫墴瀹曞綊濡歌婵ジ鏌涘☉姗堟敾缂佺姵甯為埀顒€鐏氬姗€鎮ч崱娴板洭宕稿Δ浣镐痪闂佺鎻梽鍕晬閺嶎厽鐓忛柛鈩冩礀椤b暜ee濠电姰鍨圭紞濠囧焵椤掍胶鈯曢柕鍡楀暣閺屾盯骞掗幋鐑嗘濡炪倖甯為崰鎰矙婵犲洦鍋愰柣銏㈡暩鏁堥梻浣稿悑濠㈡﹢宕导瀛樺亯闁告繂濯辨惔銏$秶妞ゆ劗鍠庢禍楣冩煛閸ャ劍鐨戦柣鐔叉櫅閳藉骞樼紙鐘卞濡炪倖娲濆▍鏇炨缚韫囨稑宸濇い鎾楀啯顔�20婵°倗濮烽崑鐘诲箵椤忓棙顫曟繝闈涱儏缁犳垿鏌ゆ慨鎰偓妤€鈻旈姀鐘嗙懓饪伴崘鈺婃%缂備礁顦顓㈠焵椤掆偓濠€閬嶅磻閻旂厧鏋侀柕鍫濐槹閸庡秹鏌涢弴銊ュ闁伙箑缍婇幃妤冩喆閸曨収鏆¢梺鍝勬閸嬫捇姊洪崫鍕垫Ч闁告梹鐗犻幃锟犳晬閸曨剙鐝伴梺闈涚箚閸撴繈鎮″▎鎰濠㈣泛顑嗙粈鈧悗娈垮櫍閺€鍗烆嚗閸曨偒鍚嬮柛鏇ㄥ幘濡叉垿姊洪崫鍕偓浠嬶綖婢跺本鍏滈柛顐f礃閺咁剟鎮橀悙闈涗壕缂佺姵甯″濠氬炊閿濆懍澹曢梺鑽ゅ枑濞叉垿鎳楃捄琛℃灁闁硅揪闄勯崕鎴︽倵閿濆骸骞樼紒鐘崇墵閺屸剝寰勫☉娆忣伓