1. Granular Filter Media: Tumi titiriw a ɛma wɔbɔ ka-filtration a etu mpɔn .
Granular filter media yɛ filter media a wɔde di dwuma kɛse, a ɛtew nsu ho titiriw denam honam fam adsorption ne interception so. Nneɛma ahorow a wɔtaa yɛ no bi ne:
1). Quartz anhwea: particle size 0.5-1.2mm, strong acid ne alkali resistance, low cost, a wɔtaa de di dwuma ma nsu a wɔnom pretreatment ne sewage treatment (hwɛ "Idustrial Water Treatment Technology Manual").
2). Activated Carbon: Wɔakyekyɛ mu ayɛ no fango ne akutu abon, a ɛwɔ porosity a ɛkɔ soro kodu 500-1500m2/g (data fibea: U.S. nneɛma a atwa yɛn ho ahyia ho banbɔ adwumayɛbea EPA), can adsorb organic matter and heavy metals, a ɛfata ma nsu a wɔde tew ho ne mframa a wɔde tew ho.
3). Anthracite: Nneɛma a ɛba fam (1.4-1.6G/cm3), a wɔde quartz anhwea abɔ mu ma ayɛ yiye, a wɔde di dwuma kɛse wɔ nsu a wɔde yiyi mu abien mu.
Mfomso a ɛwɔ granular filter media mu ne sɛ ɛnyɛ den sɛ wobɛhyehyɛ na ehia sɛ wohohoro akyi daa, a ne nkwa nna yɛ bɛyɛ mfe 3-5.
2. Fibre filter material: nea wɔpaw no yiye na ɛyɛ fɛ filtration .
Fibre filter material yɛ ade a ɛyɛ mmerɛw a ɛyɛ mmerɛw a ɛyɛ pɛpɛɛpɛ. Ananmusifo ahorow ne:
1). Polypropylene fiber: corrosion-ɛko tia, wobetumi ayɛ no PP cotton filter element, pore size 1-10μm, a wɔde di dwuma ma pre-filtration of household water purifiers.
2). Glass Fiber: Ɔhyew a ɛkɔ soro a ɛko tia ( a ennu anaasɛ ɛne 280 digrii ), a wɔtaa de di dwuma wɔ mfiridwuma mu mframa a wɔsɛe no mu, te sɛ anyinam ahoɔden adwumayɛbea desulfurization nhyehyɛe.
3). Ceramic fiber: a wɔde ka ho ne abɔde nketenkete ne fiber su, ahoɔden a ɛyɛ den a ɛko tia, a ɛfata ma nsu a ɛyɛ den a ɛkorɔn nsu filtration wɔ nnuru adwumayɛ mu.
Fibre filter ade no mu ɔhaw no yɛ ahoɔden a ɛba fam, ɛnyɛ den sɛ wobebubu wɔ bere tenten-bere a wɔde di dwuma akyi, na ɛsɛ sɛ wɔsesa no daa.
3. Membrane filter material ne nneɛma a ɛrepue: mfiridwuma mu nneɛma a ɛkɔ anim a wɔde di dwuma .
1). Membrane Filter Nneɛma a Wɔde Yɛ:
- Microfiltration membrane (0.1-10μm): Yi mmoawa ne nneɛma a ɛsensɛn hɔ, te sɛ ofie nsu a wɔde tew nneɛma ho no awiei filtration.
- Ultrafiltration membrane (0.01-0.1μm): Ebetumi atwa mmoawa no mu na wɔde di dwuma kɛse wɔ aduruyɛ mu dialysis mu (hwɛ "Membrane Separation Technology Application Guide").
2). Porous ceramic filter media: High temperature resistant (>1000℃), corrosion resistant, nanso ɛho ka yɛ kɛse, dodow no ara de di dwuma ma ɔhyew kɛse gas ahotew wɔ dade adwumayɛ mu.
3). New composite filter media: te sɛ graphene modified filter media, adsorption tumi no kɔ soro bɛboro mpɛn 3 ("Nature Materials" 2022 nhwehwɛmu), nanso wonnya nyɛɛ no aguadi wɔ ɔkwan kɛse so.
4. Ɔkwan bɛn so na wobɛpaw filter media a ɛfata?
Nhwehwɛmu a ɛkɔ akyiri a egyina filtration botae ahorow so (te sɛ turbidity removal, sterilization, decolorization), fluid properties (PH bo, ɔhyew) ne ɛka sikasɛm nhyehyɛe. Nhwɛsoɔ:
- Wɔtaa de "quartz anhwea + activated carbon" a wɔaka abom no di dwuma wɔ nsu afifide mu;
- ultrapure nsuo a ɛwɔ ɛlɛtrɔnik adwumayɛ mu no, ɛhia sɛ wɔde ma membrane filter media;
- ceramic filter media yɛ nea wɔpɛ ma ɔhyew a ɛkɔ soro fi gas treatment.
Daakye, bere a nneɛma a atwa yɛn ho ahyia ho banbɔ gyinapɛn ahorow no atu mpɔn no,-adwumayɛ ne tenten-Asetra mu composite filter media bɛyɛ nhwehwɛmu ne nkɔso adwene.