Kuburikidza nekuwedzera kwepolydimethyldiallylammonium chloride (PDMDAAC), polyaluminum chloride (PAC) uye composite flocculant yezvose zviri zviviri mukushanda kunoramba kuripo kwemembrane bioreactor (MBR), zvakaongororwa kuderedza MBR. Mhedzisiro yekusvibiswa kwemembrane. Muedzo uyu unoyera shanduko dzeMBR operating cycle, activated sludge capillary water absorption time (CST), Zeta potential, sludge volume index (SVI), sludge floc particle size distribution uye extracellular polymer content nezvimwe zviyero, uye tarisa reactor. Zvichienderana nekuchinja kwe activated sludge panguva yekushanda, madhigirii matatu ekuwedzera uye nzira dzedosi dzakanakisa nedosi shoma yeflocculation dzakasarudzwa.
Mhedzisiro yebvunzo inoratidza kuti flocculant inogona kuderedza kusvibiswa kwemembrane. Apo maflocculant matatu akasiyana akawedzerwa pachiyero chimwe chete, PDMDAAC yakava nemhedzisiro yakanaka pakuderedza kusvibiswa kwemembrane, ichiteverwa nemaflocculant akabatanidzwa, uye PAC yakava nemhedzisiro yakaipa zvikuru. Mukuyedzwa kwekuwedzera dosage uye dosing interval mode, PDMDAAC, composite flocculant, uye PAC zvese zvakaratidza kuti supplemental dosage yaive inoshanda kupfuura dosage mukuderedza kusvibiswa kwemembrane. Zvichienderana nekuchinja kwe transmembrane pressure (TMP) mukuyedza, zvinogona kuonekwa kuti mushure mekuwedzera kwekutanga kwe400 mg/L PDMDAAC, chiyero chakanakisa chekuwedzera i90 mg/L. Chiyero chakanakisa chekuwedzera che90 mg/L chinogona kuwedzera zvakanyanya nguva yekushanda inoenderera mberi yeMBR, inova yakapetwa katatu nehafu pane reactor isina supplemental flocculant, nepo chiyero chakanakisa chePAC chiri 120 mg/L. Muchina wekugadzira flocculant unoumbwa nePDMDAAC nePAC une chiyero che6:4 haugone chete kuderedza kusvibiswa kwemembrane, asiwo kuderedza mari yekushanda inokonzerwa nekushandiswa kwePDMDAAC chete. Kubatanidza kukura kweTMP uye kuchinja kwehuwandu hweSVI, zvinogona kuonekwa kuti chiyero chakakodzera chemuchina wekugadzira flocculant i60mg/L. Mushure mekuwedzera flocculant, inogona kuderedza CST kukosha kwemusanganiswa wesludge, kuwedzera Zeta potential yemusanganiswa, kuderedza SVI kukosha uye zviri mukati meEPS neSMP. Kuwedzerwa kweflocculant kunoita kuti activated sludge flocculate inyatsosimba, uye pamusoro pe membrane module. Filter cake layer yakagadzirwa inova yakatetepa, zvichiita kuti nguva yekushanda yeMBR iwedzere pasi pekuyerera kwakasimba. Flocculant haina mhedzisiro yakajeka pamhando yemvura inobuda muMBR. MBR reactor ine PDMDAAC ine avhareji yekubvisa ye93.1% uye 89.1% yeCOD neTN, zvichiteerana. Kuwanda kwemvura inobuda mutsvina kuri pasi pe45 ne5mg/L, zvichisvika padanho rekutanga reA.
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Nguva yekutumira: Mbudzi-22-2021