Sand filtration
Download
1 / 12

Sand Filtration - PowerPoint PPT Presentation


  • 332 Views
  • Uploaded on
  • Presentation posted in: General

Sand Filtration. Tipe :. Slow sand filtration Rapid (gravity) sand filtration Rapid (pressure) sand filtration. Pengertian .?. Sand filtration is a water purification process in which water is passed through a porous bed of filter medium Slow sand filtration? Rapid sand filtration?.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

Sand Filtration

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Sand Filtration


Tipe:

  • Slow sand filtration

  • Rapid (gravity) sand filtration

  • Rapid (pressure) sand filtration


Pengertian.?

  • Sand filtration is a water purification process in which water is passed through a porous bed of filter medium

    • Slow sand filtration?

    • Rapid sand filtration?


Parameter desain SSF


Perbedaan?

  • Slow sand filters are distinguished from rapid sand filters by the biologically active sand medium (including the Biofilm), and slow detention times.

  • In a mature sand bed, a thin upper sand layer called a Schmutzedecke (Biofilm) forms. The Biofilm consists of biologically active microorganisms that break down organic matter while suspended inorganic matter is removed by straining.

  • Rapid sand filters utilize primarily a physical removal process, are periodically backwashed for cleaning, and operate with long detention times.

  • Slow sand filters are cleaned by periodically scraping the existing Biofilm.


RAPID SAND FILTER

SLOW SAND FILTER

  • Effective size: 0.35-0.50 mm

  • Uniformity coefficient: >1.3/1.7

  • Filtration Rate : ~ 5 m3/m2.jam

  • Effective size: 0.15-0.35 mm

  • Uniformity coefficient: 2-3

  • Filtration Rate : 0.1-0.2 m3/m2.jam


Operasi


Mekasnismeproses..

  • Mechanical, Phisical

  • Biological

LapisanBiofilm


Backwash.

When is Backwashing Needed?

  • The head loss is so high that the filter no longer produces water at the desired rate; (Filter Mampet)

  • Floc starts to break through the filter and the turbidity in the filter effluent increases; (Effluent keruh)


BackWash


Expansion area = 20-50 % dariketinggian bed filter


ad
  • Login