Dub- Cov dej tsw qab yog ib qho tseem ceeb ntawm cov dej paug hauv kuv lub teb chaws thiab yog ib qho kev sib tw tseem ceeb rau kev kho dej ib puag ncig thiab kev txhim kho ecological hauv ob lub nroog thiab nyob deb nroog. Tsis zoo li cov qauv dej hauv lub cev uas tsuas yog tshaj qhov txwv tsis pub muaj kuab paug, cov xim dub - cov dej tsw qab tsis raug kev txom nyem los ntawm ib qho kev ua txhaum dej tsis zoo; es, lawv sawv cev rau lub cev qhuav dej uas muaj xws li dej tsis zoo, sediment, hydrodynamics, thiab cov ecosystem-txhua yam tshwm sim nyob rau hauv ib qho oxygen-deprived ib puag ncig.
Kab lus no tau tsim kho lub hauv paus ntsiab lus ntawm cov xim dub - ntxhiab dej lub cev kho thoob plaws tsib qhov ntev: cov txheej txheem ua rau muaj kev cuam tshuam, cov txheej txheem kev ntsuas kev ntsuas, cov txheej txheem kev faib tawm, peb - cov txheej txheem kho qhov loj me, thiab cov qauv ntau rau kev kho kom zoo. Nws yog tsim los pab txhawb kev tshaj lij xws li kev ntsuam xyuas kev cuam tshuam ib puag ncig, dej ib puag ncig 整治 (kho kho / kho dua tshiab), kev khiav dej num thiab kev saib xyuas, kev kho dej nyob deb nroog, thiab kev tshawb fawb tshawb fawb.
I. Core Formation Mechanisms (Essence: An Oxygen-Deprived/Anaerobic Chain Reaction)
Qhov tshwm sim ntawm cov dej tig dub thiab qias neeg - ntxhiab tsw yog qhov nyuaj dua li tsuas yog muaj cov khib nyiab siab lossis dej phwj tuaj; Nws suav nrog kev ua tiav cov tshuaj tiv thaiv kab mob ntawm cov txheej txheem anaerobic biochemical:
Kev nkag mus tsis tu ncua ntawm cov pa phem loj heev (los ntawm qhov chaw sab nraud thiab sab hauv) → Oxygen noj los ntawm microbial decomposition → sai sai ntawm cov pa yaj → Tsim cov pa oxygen -deprived (hypoxic) thiab anaerobic txo ib puag ncig.
Ob qhov kev pom zoo tshwm sim tshwm sim hauv qhov chaw txo qis no:
Mechanism ntawm Blackening: Sulfate txo qis ua kom muaj ntau ntawm sulfide ions; cov no ua ke nrog cov hlau ions (xws li hlau thiab manganese) muaj nyob rau hauv cov sediment thiab dej los ua cov dub ferrous sulfide thiab manganese sulfide colloids, uas tseem raug tshem tawm thiab muab cov dej dub - grey tsos.
Mechanism of Odor Generation: Anaerobic decomposition and decay of organic matter produces malodorous gases-xws li hydrogen sulfide, methyl mercaptan, thiab volatile organic acids- tsim kom muaj tus cwj pwm stench cuam tshuam nrog cov dej ntws.
Hauv luv luv: Oxygen deprivation yog lub hauv paus ua rau; sulfides yog lub hauv paus ntawm cov xim dub; thiab anaerobic lwj yog qhov chaw ntawm cov ntxhiab tsw.
II. Plaub-Txoj kev faib tawm ntawm qhov chaw muaj kuab paug (Cov Kev Pabcuam Kev Pabcuam Hauv Nroog thiab Hauv Nroog)
Cov pa phem hauv cov xim dub- tsw ntxhiab dej yog ib hom kev ua qias tuaj, uas tuaj yeem muab faib ua plaub lub hauv paus loj:
1. Cov pa phem sab nraud (Piv txwv li)
Kev tawm ntawm cov dej phwj tuaj hauv nroog, cov dej khib nyiab hauv nroog, cov dej nag sib xyaw thiab cov dej phwj tuaj, thiab cov dej phwj tuaj ua ke (CSOs) rau hauv cov dej ntws yog thawj qhov ua rau muaj kuab paug ntau dhau hauv dej. 2. Cov pa phem sab hauv (ntev- lub sijhawm, Persistent Root Cause)
Hauv qab sediments khaws cov organic teeb meem, nitrogen, phosphorus, sulfides, thiab cov hlau hnyav dhau sijhawm. Txawm tias tom qab qhov chaw muaj kuab paug sab nraud raug txiav tawm, cov sediments tuaj yeem tso tawm cov pa phem mus ntxiv rau 5-10 xyoo, ua qhov laj thawj tseem ceeb rau kev rov tshwm sim ntawm cov xim dub - ntxhiab tsw.
3. Tsis txaus Hydrodynamic tej yam kev mob (Cov xwm txheej txhawb kev txuas ntxiv deterioration)
Kev khiav qeeb lossis tsis khov, tuag-kawg channel, thiab kev pauv dej tsis zoo ua rau muaj huab cua tsis tshua muaj zog re-oxygenation muaj peev xwm thiab poob ntawm tus kheej- muaj peev xwm ua kom huv, ua rau tsim kom muaj ib puag ncig anaerobic zoo heev.
4. Ntuj Environmental Factors
Qhov kub thiab txias, lub caij qhuav, tsis tshua muaj dej ntws, thiab cov dej tsis tshua muaj ntxiv txo cov pa oxygen (DO) thiab ua kom qhov pib ntawm cov xim dub - ntxhiab tsw.
Ua rau tshwj xeeb rau cov neeg nyob deb nroog dub- Cov dej tsw qab
Tsis zoo li cov dej hauv nroog, cov neeg nyob deb nroog dub- cov dej tsw qab yog cov yam ntxwv ntawm kev tawg, tsis yog - cov ntsiab lus muaj kuab paug, tawg, thiab kev tswj tsis muaj zog:
Kev nkag mus tsis tu ncua ntawm qhov tsis yog - taw tes muaj kuab paug los ntawm kev ua liaj ua teb thiab kev ua liaj ua teb / nqaij qaib.
Kev tso tawm ncaj qha ntawm cov dej phwj hauv tsev los ntawm ib tsev neeg vim tsis muaj chaw khaws khoom.
Kev lim dej hnyav hauv cov dej me me uas tsis muaj sijhawm ntev - dredging.
Tsis muaj kev khiav hauj lwm thiab kev saib xyuas, tsis muaj kev tswj xyuas, thiab cov teeb meem kev ua qias tuaj.
III. Kev Ntsuas Ntsuas Qhov Ntsuas Qhov Ntsuas (Ib Cheeb Tsam Tseem Ceeb Feem ntau tsis to taub hauv Kev Lag Luam)
Raws li Cov Lus Qhia rau Kev Kho Mob Hauv Nroog Dub- Cov Dej Tsis Muaj Dej, qhov kev txiav txim siab ntawm cov xim dub - ntxhiab tsw tsis cia siab rau COD, BOD, lossis tag nrho phosphorus.
Plaub Tus Cwj Pwm Tus Cwj Pwm (Ib leeg -Qhov Txheej Txheem Veto)
Transparency, Dissolved Oxygen (DO), Oxidation -Txo Muaj Peev Xwm (ORP), thiab Ammonia Nitrogen.
Nov yog lub tswv yim tseem ceeb hauv kev lag luam:
COD thiab BOD yog cov cim qhia txog kev ua qias tuaj.
DO, ORP, pob tshab, thiab ammonia nitrogen yog cov cim qhia txog cov txiaj ntsig (cov tsos mob) ntawm cov xim dub - ntxhiab tsw.
Kev txiav txim siab ua raws li "ib zaug- qhov xwm txheej phem tshaj- rooj plaub" txoj cai: yog tias ib qho kev taw qhia nce mus txog qhov pib rau qhov mob me lossis hnyav dub- ntxhiab tsw, lub cev dej raug cais raws li.
Indicator Measurement Methods (Engineering Practice Standards)
Transparency: Kev ntsuas teb siv txoj kev Secchi disk lossis luam tawm - tus cwj pwm txoj kev.
DO thiab ORP: Real- tshawb pom lub sijhawm siv hauv -situ electrochemical electrodes.
Ammonia Nitrogen: Kev soj ntsuam kuaj tom qab pom cov qauv dej los ntawm 0.45μm membrane (Nessler's reagent method lossis salicylate method).
Cov Lus Qhia rau Kev Tshawb Fawb Kev Lag Luam thiab Kev Txhim Kho
Lub teb chaws tus qauv qhia tam sim no yog qhov yooj yim thiab ua tau zoo tab sis tsis muaj qhov tseeb ntawm qhov chaw pib. Tam sim no mainstream optimization cov lus qhia nyob rau hauv lub teb:
Kev sib koom ua ke COD thiab TP kom ua tiav cov yam ntxwv ntawm cov pa phem
Ntxiv cov cim ntsuas xws li tsw qhov pib thiab chromaticity
Tsim kom muaj ntau- qauv ntsuas kev ntsuas dav dav nyob rau hauv cov pa oxygen yaj
IV. Peb -Tier Comprehensive Remediation Technology System (Kev Kub Ceev - Txhim Kho - Ntev-Lub Sij Hawm Stability)
Kev kho cov xim dub-cov dej tsw qab nruj nruj txwv tsis pub muaj kev cia siab rau ib qho kev ntsuas- xws li kev khawb av, kev siv tshuaj lom neeg, lossis dej ntxiv rau ib leeg-thiab yuav tsum ua raws li peb -theem logic ntawm "kev tswj hwm thawj zaug, kev txhim kho zoo thib ob, thiab kev ruaj ntseg ruaj khov kawg."
Kauj Ruam 1: Kev Kho Thaum Muaj Xwm Ceev (Kev tshem tawm sai sai ntawm cov xim dub thiab tsw ntxhiab)
Lub hom phiaj: luv- lub sij hawm tshem tawm ntawm qhov pom dub thiab tsw
Cov kev ntsuas tseem ceeb: Kev cuam tshuam rau sab nraud thiab kev tswj hwm qhov chaw, cov av noo sai sai, kev siv tshuaj lom neeg, kev hloov pauv dej hauv zej zog, thiab siab - siv aeration / re-oxygenation
Muaj nuj nqi: sai sai cuam tshuam qhov chaw anaerobic, inhibits sulfide tsim, thiab txo cov ntxhiab tsw
Theem 2: Kev Txhim Kho Dej Zoo (Kev ua raws li kev ruaj ntseg)
Lub hom phiaj: txhim kho tag nrho cov ntsuas dej zoo
Kev siv thev naus laus zis: Kev ua kom tsis tu ncua, kev hloov kho cov av av thiab kev ua kom dhau mus, hla kev ua kom huv ntawm cov pa phem, tshem tawm cov nroj tsuag dej huv, thiab cov kab mob microbial zej zog bio-augmentation
Kev Ua Haujlwm: Ua kom cov pa oxygen ntau ntxiv, txo cov ammonia-nitrogen, thiab tshem tawm cov pa phem sab hauv los ntawm cov sediments
Kauj Ruam 3: Ntev- Lub Sijhawm Stability Maintenance (Lub hauv paus-ua rau kev daws teeb meem los tiv thaiv rov tshwm sim)
Lub Hom Phiaj: Rov qab kho cov dej hauv lub cev ecological tus kheej -purification muaj peev xwm ua kom pom tseeb ntev
Tshuab: Hydrodynamic optimization thiab teem sij hawm, ua kom tiav ecosystem reconstruction, algal tawg tiv thaiv thiab tswj, thiab niaj hnub ua hauj lwm thiab txij nkawm
V. Peb Yam Kev Kawm Loj (Physical + Chemical + Ecological)
1. Kev kho lub cev
Sediment dredging, mechanical aeration, dej pauv, thiab tshem tawm cov thoob khib nyiab thiab cov khib nyiab ntab; yields qhov tshwm sim sai tshaj plaws tab sis feem ntau hais txog cov tsos mob.
2. Tshuaj kho mob
Tshuaj flocculation, phosphorus passivation / immobilization, thiab oxidative sterilization; haum rau cov xwm txheej xwm txheej ceev tab sis tsis yog ntev - kev cia siab rau lub sijhawm. 3. Ecological thiab Biological Remediation (Qhov kawg kho)
Tsim cov av ntub dej, submerged zaub reconstruction, microbial li, ecological floating Islands, thiab biomanipulation.
Tib txoj hauv kev uas muaj peev xwm ua tiav ntev - lub sij hawm ruaj khov thiab tshem tawm mus tas li qhov rov tshwm sim ntawm cov xim dub - ntxhiab tsw.
VI. Quantitative Industry Acceptance Standards (Key Technical Parameters)
Raws li kev tshawb fawb thiab engineering txheeb cais hauv kev lag luam kho dej ib puag ncig, ua kom tau raws li kev ruaj ntseg yuav tsum:
Increase in dissolved oxygen (DO) by >2-3 mg/l
COD tshem tawm tus nqi Ntau dua lossis sib npaug li 60%
Kev tshem tawm ammonia nitrogen ntau dua lossis sib npaug li 60%
Tag nrho phosphorus tshem tawm tus nqi Ntau dua lossis sib npaug li 50%
Tsuas yog los ntawm kev ua raws li cov ntsuas no tuaj yeem hloov pauv dej los ntawm theem ntawm "kev tshem tawm thaum muaj xwm txheej ceev ntawm cov xim dub- ntxhiab tsw" mus rau "kev ua raws li cov dej ruaj khov thiab kev txhim kho ecological."
VII. Summary: Lub Ntsiab Tseem Ceeb ntawm Dub-Kev kho dej tsw qab
Oxygen deficiency yog lub hauv paus ua rau; hauv qab sediment yog "mob"; Cov pa phem sab nraud yog qhov ua rau; thiab hydrodynamics yog qhov tsis muaj zog txuas.
Kev ntsuam xyuas yog nyob ntawm plaub yam ntxwv tseem ceeb, tsis yog COD los yog BOD.
Kev kho yuav tsum ua raws li peb theem - kev nce qib: qhov chaw tswj → kev txhim kho dej zoo → ecological stability.
Luv -lub sij hawm cia siab rau txoj kev physicochemical; nruab nrab-lub sij hawm tso siab rau kev ua kom zoo dej zoo; ntev -lub sij hawm cia siab rau ecological self-purification.
Kev kho cov xim dub- cov dej tsw qab tsis yog kev kho dej xwb; Nws yog ib qho systematic restoration integrating dej zoo, hauv qab sediment, hydrodynamics, microorganisms, thiab ecosystem. Nws sawv cev rau cov txheej txheem tseem ceeb rau kev tsim kho dej hauv ib puag ncig tam sim no, kev hloov kho dej hauv zej zog, thiab kev khiav dej num thiab kev saib xyuas.
