SOTE Demystified: Ta yaya Diffusers ke haɓaka Canja wurin Oxygen-Aquasust?

Teburin Abubuwan Ciki

1. Hanyoyin Gwaji don Ayyukan Oxygenation na Microporous Aeration
2. Tasirin iska akan aikin oxygenation
3. Sakamakon girman pore akan aikin oxygenation
4. Sakamakon shigar zurfin ruwa akan aikin oxygenation
5. Ƙarshen Gwaji

1.Test hanyoyin don Oxygenation Performance na Microporous Aeration

A cikin tsarin kula da ruwan datti, tsarin iskar da iska ya kai kashi 45 zuwa 75% na yawan kuzarin da ake amfani da shi na dukkan masana'antar kula da ruwan sha, domin inganta isar da iskar oxygen ta hanyar iskar iska, ana amfani da injin sarrafa ruwan datti na yanzu mara kyau. Systems.Idan aka kwatanta da tsarin aeration na manyan kumfa masu girma da matsakaici, tsarin kula da kumfa mai kyau zai iya adana kusan 50% na amfani da makamashi. Koyaya, ƙimar amfani da iskar oxygen na tsarin iskar sa shima yana cikin kewayon 20% zuwa 30%. Bugu da kari, an sami karin wurare a kasar Sin don yin amfani da fasahar iskar kumfa mai kyau don kula da gurbatattun koguna, amma babu wani bincike kan yadda za a iya zabar iskar kumfa mai kyau da kyau don yanayin ruwa daban-daban.

Sabili da haka, inganta ingantaccen kumfa mai iskar oxygenation sigogi na ayyuka don ainihin samarwa da aikace-aikacen yana da mahimmanci.

Akwai abubuwa da yawa da ke shafar aikin iska mai kumfa da iskar oxygen, mafi mahimmancin su shine ƙarar iska, girman pore da shigarwa na zurfin ruwa.

A halin yanzu, akwai ƙarancin karatu game da alaƙar da ke tsakanin aikin iskar oxygenation na iskar kumfa mai kyau da girman pore da zurfin shigarwa a gida da waje. Binciken ya fi mai da hankali kan haɓaka jimlar adadin iskar oxygen da ƙarfin iskar oxygen, kuma ya yi watsi da matsalar amfani da makamashi a cikin tsarin iska. Muna ɗaukar ƙimar ƙarfin ka'idar azaman babban ma'aunin bincike, haɗe tare da ƙarfin iskar oxygen da yanayin amfani da iskar oxygen, da farko haɓaka ƙarar iska, diamita mai buɗewa da zurfin shigarwa lokacin da ingancin iska shine mafi girma, don samar da tunani don aikace-aikacen. na fasaha mai kyau kumfa iska a cikin ainihin aikin.

1.Materials da hanyoyin

1.1 Gwajin saitin

An yi saitin gwajin da Plexiglas, kuma babban jiki shine D {0}}.4 m × 2 m tankin iskar siliki tare da narkar da binciken iskar oxygen dake 0.5 m ƙasa da saman ruwa (an nuna a hoto 1). ).

Hoto 1 Saitin Gwajin Iska da Oxygenation

1.2 Gwaji kayan

Fine Bubble aerator, wanda aka yi da membrane na roba, diamita 215 mm, girman pore 50, 100, 200, 500, 1 000 μm. Sension378 benchtop narkar da oxygen tester, HACH, Amurka. Gas rotor kwarara mita, kewayon 0 ~ 3 m3 / h, daidaito ± 0.2%. HC-S abin busa. Mai haɓakawa: CoCl 2-6H2O, tsantsar nazari; Deoxidant: Na2SO3, analytically tsarki.

1.3 Hanyar gwaji

An gudanar da gwajin ne ta hanyar hanyar da ba ta tsaya tsaye ba, watau Na2SO3 da CoCl2-6H2O an fara yin alluran ne don samun iskar oxygen a lokacin gwajin, kuma an fara iska lokacin da iskar oxygen da ke cikin ruwa ta ragu zuwa {{5} }. An yi rikodin canje-canje a cikin narkar da iskar oxygen a cikin ruwa a kan lokaci, kuma an ƙididdige ƙimar KLa. An gwada aikin iskar oxygen a ƙarƙashin juzu'i daban-daban na iska (0.5, 1, 1.5, 2, 2.5, 3 m3/h), girman pore daban-daban (5{22}}, 100, 200, 500, 1, 000 μm), da zurfin ruwa daban-daban (0.8, 1.1, 1.3, 1.5, 1.8, 2.0 m), kuma an yi nuni ga CJ/T

3015. 2 -1993 "Aerator clear water oxygenation determination" da kuma Amurka bayyana ma'aunin gwajin iskar oxygenation ruwa.

2.Sakamako da tattaunawa

2.1 Ka'idar gwajin

Babban ka'idar gwajin ta dogara ne akan ka'idar membrane sau biyu da Whitman ya gabatar a cikin 1923. Ana iya bayyana tsarin isar da iskar oxygen a cikin lissafi (1).

Inda: dc/dt - yawan canja wurin taro, watau, adadin iskar oxygen da aka canjawa kowace juzu'in ruwa a kowane lokaci, mg/(Ls).

KLa - jimlar isar da iskar oxygen na mai iskar gas a yanayin gwaji, min{1}};

C * - cikakken narkar da iskar oxygen a cikin ruwa, mg/l.

Ct - narkar da iskar oxygen a cikin ruwa a lokacin iskar t, mg/L.

Idan zafin gwajin ba a digiri 20 ba, ana iya amfani da lissafin (2) don gyara KLa:

Ƙarfin oxygenation (OC, kg / h) yana bayyana ta hanyar lissafi (3).

Inda: V - ƙarar tafkin aeration, m3.

Amfani da iskar oxygen (SOTE,%) ana bayyana shi ta hanyar lissafi (4).

Inda: q - ƙarar iska a daidaitaccen yanayin, m3 / h.

Ingantacciyar ƙarfin ka'idar [E, kg/(kW-h)] ana bayyana shi ta lissafin (5).

Inda: P - ikon kayan aikin aeration, kW.

Alamomin da aka saba amfani dasu don kimanta aikin iskar oxygenation shine jimlar iskar oxygen taro coefficient KLa, ƙarfin oxygenation OC, ƙimar amfani da iskar oxygen SOTE da ingantaccen ƙarfin ikon E [7]. Nazarin da ake ciki sun fi mayar da hankali kan yanayin jimlar adadin iskar oxygen, ƙarfin iskar oxygen da amfani da iskar oxygen, kuma ƙasa da ingantaccen ƙarfin ikon [8, 9]. Ƙimar ƙarfin ka'idar, a matsayin maƙasudin inganci kawai [10], na iya nuna matsalar amfani da makamashi a cikin tsarin iskar iska, wanda shine abin da wannan gwaji ya mayar da hankali.

2.2 Tasirin iska akan aikin oxygenation

An kimanta aikin iskar oxygenation a matakan iska daban-daban ta hanyar iska a ƙasan 2 m na aerator tare da girman rami na 200 μm, kuma an nuna sakamakon a cikin siffa 2.

Hoto 2 Bambancin K da amfani da iskar oxygen tare da yawan iska

Kamar yadda ake iya gani daga hoto na 2, KLa yana ƙaruwa a hankali tare da haɓakar ƙarar iska. Wannan shi ne yafi saboda girman ƙarar iska, mafi girma wurin hulɗar ruwan gas kuma mafi girman ingancin iskar oxygen. A gefe guda kuma, wasu masu bincike sun gano cewa yawan amfani da iskar oxygen ya ragu tare da karuwar yawan iska, kuma an sami irin wannan yanayin a cikin wannan gwaji. Wannan shi ne saboda a ƙarƙashin wani zurfin ruwa, lokacin zama na kumfa a cikin ruwa yana ƙaruwa lokacin da ƙarar iska ya yi ƙanƙara, kuma an tsawaita lokacin saduwa da ruwan gas; lokacin da yawan iskar iska ya yi yawa, hargitsin ruwa yana da ƙarfi, kuma yawancin iskar oxygen ɗin ba a yin amfani da su yadda ya kamata, kuma a ƙarshe ana fitar da su daga saman ruwa ta hanyar kumfa zuwa iska. Yawan amfani da iskar oxygen da aka samu daga wannan gwaji bai da yawa idan aka kwatanta da wallafe-wallafen, mai yiwuwa saboda tsayin dakaru bai isa ba, kuma yawan iskar oxygen ya tsere ba tare da tuntuɓar ginshiƙin ruwa ba, yana rage yawan amfani da iskar oxygen.

Bambance-bambancen ingantaccen ƙarfin ka'idar (E) tare da iska yana nunawa a cikin siffa 3.

Hoto na 3 Ƙarfin wutar lantarki tare da ƙarar iska

Kamar yadda ake iya gani a cikin hoto na 3, ingantaccen ikon ka'idar yana raguwa sannu a hankali tare da haɓaka iska. Wannan shi ne saboda daidaitaccen canjin iskar oxygen yana ƙaruwa tare da haɓakar ƙarar iska a ƙarƙashin wasu yanayi mai zurfi na ruwa, amma haɓakar aikin da ake amfani da shi ta hanyar busa ya fi mahimmanci fiye da haɓakar daidaitaccen canjin iskar oxygen, don haka ingantaccen ikon ka'idar. yana raguwa tare da haɓakar ƙarar iska a cikin kewayon ƙarar iska da aka bincika a cikin gwaji. Haɗa abubuwan da ke faruwa a cikin Figs. 2 da 3, ana iya gano cewa ana samun mafi kyawun aikin iskar oxygen a cikin ƙarar iska na 0.5 m3/h.

3. Sakamakon girman pore akan aikin oxygenation

Girman pore yana da tasiri mai girma akan samuwar kumfa, girman girman pore, girman girman kumfa. Kumfa a kan aikin oxygenation na tasirin yana bayyana a cikin bangarori biyu: Na farko, ƙananan kumfa guda ɗaya, mafi girman yanki na musamman na kumfa, ya fi girma da wurin canja wurin taro na ruwa, mafi dacewa ga canja wurin. oxygen; Abu na biyu, mafi girma da kumfa, da karfi da rawar da ke motsa ruwa, da gas-ruwa hadawa tsakanin sauri, mafi kyau sakamako na oxygenation. Sau da yawa batu na farko a cikin tsarin canja wurin taro yana taka muhimmiyar rawa. Jarabawar za ta zama ƙarar iskar da aka saita zuwa 0.5m3/h, don bincika tasirin girman pore akan amfanin KLa da iskar oxygen, duba Hoto 4.

Hoto 4 Bambance-bambancen lanƙwasa na KLa da amfani da iskar oxygen tare da girman pore

Kamar yadda ake iya gani daga hoto na 4 duka KLa da amfani da iskar oxygen sun ragu tare da karuwar girman pore. A ƙarƙashin yanayin zurfin ruwa iri ɗaya da ƙarar iska, KLa na 50 μm aperture aerator yana kusan sau uku na na 1,{3}} μm aperture aerator. Sabili da haka, lokacin da aka shigar da na'urar a cikin wani zurfin ruwa, ƙananan ƙarancin ƙarfin iskar oxygenation da amfani da iskar oxygen ya fi girma.

Bambance-bambancen ingantaccen ikon ka'idar tare da girman pore yana nunawa a cikin siffa 5.

Hoto 5 Ƙarfafa ƙarfin ka'ida da girman pore

Kamar yadda ake iya gani daga hoto na 5, ingantaccen ikon ka'idar yana nuna haɓakar haɓakawa sannan kuma raguwa tare da haɓaka girman buɗe ido. Wannan shi ne saboda a gefe guda, ƙananan buɗaɗɗen buɗaɗɗen buɗaɗɗen yana da mafi girma KLa da ƙarfin oxygenation, wanda ke da kyau ga oxygenation. A gefe guda, asarar juriya a ƙarƙashin wani zurfin ruwa yana ƙaruwa tare da raguwar diamita na budewa. Lokacin da raguwar girman pore akan asarar juriya na tasirin haɓakawa ya fi girma fiye da rawar da ake yi na iskar oxygen, za a rage yawan ƙarfin wutar lantarki tare da rage girman pore. Sabili da haka, lokacin da diamita na budewa ya kasance ƙananan, ƙimar ƙarfin ka'idar za ta karu tare da karuwar diamita na budewa, da diamita na 200 μm don kaiwa matsakaicin darajar 1.91 kg / (kW-h); lokacin da diamita na diamita> 200 μm, asarar juriya a cikin tsarin aeration ba ya taka muhimmiyar rawa a cikin tsarin aeration, KLa da ƙarfin oxygenation tare da karuwa a diamita na aerator za a rage, sabili da haka, ka'idar ingancin wutar lantarki yana nuna gagarumin ci gaba na ƙasa.

4. Sakamakon shigarwa zurfin ruwa akan oxygenation

Zurfin ruwan da aka shigar da na'urar yana da tasiri mai mahimmanci akan tasirin iska da oxygenation. Makasudin binciken gwajin shine tashar ruwa mara zurfi da ƙasa da 2 m. Zurfin iskar na'urar an ƙaddara ta zurfin ruwa na tafkin. Nazarce-nazarcen da ake da su sun fi mayar da hankali ne kan zurfin da ke cikin na’urar busar da iska (watau ana shigar da na’urar a kasan tafki, kuma zurfin ruwan ya karu ta hanyar kara yawan ruwa), gwajin ya fi mayar da hankali ne kan zurfin shigar da na’urar. aerator (watau, adadin ruwan da ke cikin tafkin ana kiyaye shi akai-akai, kuma ana daidaita tsayin shigarwa na aerator don nemo mafi kyawun zurfin ruwa don tasirin iska), da canje-canje na KLa da amfani da iskar oxygen tare da zurfin an nuna ruwa a hoto na 6.

Hoto 6 Bambance-bambancen madaidaicin K da amfani da iskar oxygen tare da zurfin ruwa

Hoto na 6 ya nuna cewa tare da karuwar zurfin ruwa, duka KLa da amfani da oxygen suna nuna haɓakar haɓakar haɓaka, tare da KLa ya bambanta da fiye da sau hudu a 0.8 m zurfin ruwa da zurfin ruwa 2 m. Wannan shi ne saboda zurfin ruwa, tsawon lokacin zama na kumfa a cikin ginshiƙi na ruwa, tsawon lokacin hulɗar ruwan gas, mafi kyawun tasirin iskar oxygen. Sabili da haka, zurfin shigar da mai ɗaukar iska, mafi dacewa ga ƙarfin iskar oxygen da amfani da iskar oxygen. Amma shigar da zurfin ruwa yana ƙaruwa a lokaci guda asarar juriya kuma za ta karu, don shawo kan asarar juriya, wajibi ne a kara yawan iska, wanda ba makawa zai haifar da karuwar amfani da makamashi da farashin aiki. Sabili da haka, don samun zurfin shigarwa mafi kyau, ya zama dole don kimanta alaƙar da ke tsakanin ingantaccen ƙarfin wutar lantarki da zurfin ruwa, duba Table 1.

Tebur na 1 yana nuna cewa ƙimar ƙarfin ƙa'idar ta yi ƙasa sosai a zurfin shigarwa na {{1}.8m, tare da 0.5kg/(kW-h) kawai, wanda ke sa iskar ruwa mara zurfi bai dace ba. Shigar da zurfin ruwa na kewayon 1.1 ~ 1.5 m, saboda haɓakar haɓakar haɓakar iskar oxygenation, yayin da mai ba da iska ta hanyar juriya ba a bayyane yake ba, don haka ingantaccen ƙarfin ka'idar yana ƙaruwa da sauri. Yayin da zurfin ruwa ya karu zuwa 1.8 m, sakamakon asarar juriya a kan aikin oxygenation ya zama mafi mahimmanci, wanda ya haifar da haɓakar haɓakar ƙarfin ka'idar da ke kula da matakin kashewa, amma har yanzu yana nuna haɓakar haɓaka, kuma a cikin shigarwa. na zurfin ruwa na 2 m, ƙarfin ikon ka'idar ya kai matsakaicin 1.97 kg / (kW-h). Saboda haka, don tashoshi <2 m, an fi son aeration na ƙasa don mafi kyawun oxygenation.

5.Gwargwadon Kammalawa

1.Amfani da a tsaye ba na tsaye hanya ga lafiya kumfa aeration bayyana ruwa oxygenation gwajin, a cikin gwajin ruwa zurfin (< 2 m) and pore size (50 ~ 1 000 μm) conditions, the total oxygen mass transfer coefficient KLa and oxygen utilisation increased with the installation of the water depth; with the increase in pore size and decreased. In the process of increasing the aeration volume from 0.5 m3/h to 3 m3/h, the total oxygen mass transfer coefficient and oxygenation capacity gradually increased, and the oxygen utilisation rate decreased.

2. Theoretical ikon yadda ya dace shine kawai alamar tasiri. A cikin yanayin gwaje-gwaje, ingantaccen ikon ka'idar tare da aeration da shigar da zurfin ruwa yana ƙaruwa, tare da haɓaka buɗewar buɗewa da farko haɓaka sannan kuma raguwa. Shigar da zurfin ruwa da budewa ya kamata ya zama haɗuwa mai ma'ana don yin aikin oxygenation don cimma mafi kyau, a gaba ɗaya, mafi girman zurfin zaɓin ruwa na aperture aperture ya fi girma.

3. Sakamakon gwajin ya nuna cewa bai kamata a yi amfani da iska mai zurfi ba. A zurfin shigarwa na 2 m, ƙarar iska na 0.5 m3/h da na'urar iska mai girman μm 200 ya haifar da matsakaicin ƙarfin ƙarfin ƙarfe na 1.97 kg/(kW-h).

Abin da ke sama shine bayanan R & D ɗin mu, wanda aka sadaukar da bayanai don ci gaba da haɓaka aikin samfur, daga tushen don magance buɗaɗɗen faifan iska, fatar EPDM mai sauƙin fashewa, toshewa, da sauran batutuwa.

NIHAO shi ne kamfani na farko a kasar Sin da ya kera kayayyakin roba da robobi sama da shekaru ashirin a matsayin babban jagora a masana'antar sarrafa ruwa, tare da kwararrun masu bincike da raya kasa da na'urorin masana'antu na musamman don bunkasa daidaito da ingancin kayayyakin.

Mun kware a masana'antar bututu duffuser da Disc duffuser sama da shekaru 10. Aeration Disc membrane fata muna amfani da keɓaɓɓen dabarar da ba ta da mai, bayan ci gaba da gwajin ƙungiyar R & D da haɓaka haɓakar aikinmu gabaɗaya na cikakkiyar aikin fata na membrane, amfani da har zuwa shekaru takwas na microporous maras toshe. Ba wai kawai yin amfani da babban ingancin EPDM 100% sabon abu ba amma kuma ya kara da 38% na adadin baƙar fata na carbon, ta hanyar diamita na ƙarfi daban-daban don haɓaka aikin juriya na fata na membrane da juriya don ƙarfafawa.

Diffuser ɗin mu yana da fa'idodi masu zuwa:

1. Anti-toshewa, kyakkyawan rigakafin dawowa, babban yanki mai lamba, juriya mai ƙarfi

2. Ƙarfin ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar ƙwayar cuta, juriya na ruwa, mafi kyawun tasiri mai tasiri

3.Uniform kumfa, high-inganci aeration, high oxygen amfani, makamashi ceto, yadda ya kamata rage aiki halin kaka.

Amfanin Tube Aeration:

Sauƙi don tarawa, a cikin kasan bututun tafkin da bututun aeration a cikin ɗayan, ba sa buƙatar ƙarin kayan aikin bututu, farashin yana ƙasa da sauran aerator microporous. Irin wannan acid da juriya na alkali, ba sauƙin tsufa ba, tsawon rayuwar aiki. A cikin ƙuruciyar iska, ba aeration ba ya daidaita, ba a kwance ba, an rufe microporous mai canzawa, don haka dakatarwar aeration na dogon lokaci, ba za a toshe ba.

ƙwararrun ƙungiyar NIHAO da ma'aikatan R & D, don samar muku da ainihin ƙirar yanayi, ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun abubuwa don zaɓar mafi dacewa ga mai sarrafa ku! Muna fatan tuntuɓar ku da gaske don ƙirƙirar makoma mai kyau kuma mai tsabta!