Nzira yekuomesera mvura yepepa inoda kuwedzerwa imwe coagulant, iyo inowanzonziwo flocculant inobvisa ruvara rwemvura yepepa. Nekuti coagulation sedimentation inogona kubvisa zvinhu zvakasungirirwa mumvura yakasviba, chemical sedimentation inogona kubvisa ruvara.
Saka, tsvina yakawanda, macolloid, uye zvinosvibisa mumvura yakasviba zvinogona kuunganidzwa nekuwedzera mushonga uyu wemakemikari mutangi re coagulation sedimentation, kuitira kuti pave nemigumisiro ye decolorization uye destabilization, uye mvura yakasviba ichave yakajeka. Ma flocculants anoshandiswa zvakanyanya anosanganisira polymer flocculants uye microbial flocculants, uye polymer flocculants anosanganisira synthetic organic polymers, inorganic polymers, uye natural organic polymers. Zviri pachena kuti flocculant inobvisa ruvarayekugadzirwa kwepepa, mvura yakasviba ipolymer yakagadzirwa nemakemikari ine mamorekuru akawanda.
Mvura yakasviba inowanzo gadziriswa ne: screen → adjustment → sedimentation kana air flotation → A/O kana contact oxidation → secondary sedimentation tank → discharge. Flocculant inobvisa ruvara inoshandiswa mu sedimentation tank, uye ine hunhu hwekushanda kuri nyore, huwandu hwakawanda hweCOD inobviswa, uye inogona kudzivirira kusvibiswa kwechipiri.
Kune mhando dzakawanda dzemvura yakaraswa muindasitiri yemapepa. Kunyangwe iri mvura yakaraswa yemushandi wekugadzira, tekinoroji yekurapa inoshandiswa ichave yakasiyana. Zvisinei, chinhu chimwe chete chemvura iyi yakaraswa ndeye COD yakakwira, chroma yakakwira, kubvisa ruvara uye kuderedza COD, saka inogona kungorapwa nekubvisa ruvara rwemapepa ekugadzira mvura yakaraswa, uye yobva yashanda pamwe chete nemaitiro akasiyana kuti makambani ekugadzirisazve mvura ashandise kana kusangana nezvinodiwa pakuburitsa mvura. Ita mumutsara. Kana mhando yemvura yakaraswa uye maitiro ekurapa zvakasiyana, zvinoenderana nechiyero uye sarudzo yemhando ye flocculant inobvisa ruvara. Saka, zvinokurudzirwa kuita bvunzo diki yemuenzaniso usati waishandisa pamuchina kuti uone modhi uye chiyero (zvakawanda zvezvigadzirwa zvedu zvinemienzaniso yemahara, kuitira kupa ruzivo rwakarurama uye vimbiso iri nani yekushandiswa panzvimbo yacho.
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Nguva yekutumira: Chikunguru-29-2022