Transcript grey water multi media filtration - EnviroTech | Water Treatment and

ETL Multi Media Grey Water Filters and Pre
Reverse Osmosis Filtration
ETL Credentials
EnviroTech markets the Multi Media Filter, the technology has been “tried
and tested” over the last 10 years on a variety of applications.
The ETL filter been specified by some of Europe’s / MENA`s largest
organizations.
Flagship reference sites in pre-reverse osmosis desalination, tertiary
treatment, grey water recycling, mobile and temporary water applications.
Grey Water Recycling in residential, leisure, commercial and Industrial
sectors.
The ETL Multi Media Filter
The ETL Filter is an improved filtration system and process for the elimination of solids and
pathogens from water and wastewater on a commercially viable scale, taking deep-bed
filtration to a new level. Typical applications include:
• Waste Water: Tertiary Filtration
• Potable Water: Bore Hole Water and River Water
• Desalination: Pre-Reverse Osmosis Drinking Water Treatment: (SDI<3)
• Industrial Process Water: Cooling Tower, Full Stream, Side Stream or Make Up Water
• Grey Water Recycling: Secondary Waste Water or Lightly Contaminated Water
The ETL Filter Performance
Max Velocity through Max sus-solids
bed (m/hr)
loading (mg/l)
Filter Type
avg sus-solids
remaining (microns)
Retained particle size after
backwash (microns)
ETL Multi Media Filter
50
500
0.2
<0.5
Rapid Sand
10
100
3
10
Cartridge
14
5
0.6
3
Crossflow
8
50
3.2
6
Anthracite
9
100
50
15
Performance Benefits:
o
o
o
o
Flow rates at least 5 times faster
Removes 15 times more suspended solids than a rapid sand filter
Quicker backwash times – Lower running costs
Lower running costs
The ETL Multi Media Filter
•
The Filter comprises of 4 layers of Filter Media.
•
The Filter Media will last a minimum of 15 years.
•
Particle size removal down to 0.2 microns.
•
High filtration velocities of up to 50m3/m2hr
•
High solids handling capacity up to 500mgl
•
Backwash water consumption, 0.1 to 1%
How Does it Work?
Scottish Water :Luss(Loch Lomond)
How Does it Work?
• 4 layers of inert natural media that have an increasing density, a decreasing particle size and
specific shape factor.
• The media has a naturally high positive charge which enables negatively charged particulates
such as Cryptosporidium and Legionella to be removed by surface adsorption.
Summary
• Small
Footprint, Versatile Package Solutions to meet client
requirements
• The ETL Multi Media Filter inexpensive to purchase, operate and
maintain
•Natural, Long Lasting Media (10 Years Warrantee)
• Minimal or no Chemical Dosing Requirements
• Faster Flow Rates (up to 50m3/m2hr)
• High Performance Filtration to 0.2 micron SS @ 500mg/litre
• Low Volume Backwash (0.1-1% of forward feed)
•Easy to install and maintain (Very little training required)
Pre-Treatment to Reverse Osmosis
PARTCULARS
Gulf Green Media Filtration
Standard Dual Media Filtration
Commercially Active
3 years
3 years
Average Raw SDI
6 to 7
6 to 7
Average Filtered SDI
Less than 3 SDI without Chemicals
Less than 3 SDI with Chemicals
Filtration Velocity m/hr
30 - 40
10
Raw Water NTU
1ntu to 2ntu
1ntu to 2ntu
Filtered Water NTU
0.2 Micron without Coagulant
0.2 with Ferric Chloride
Chemical Cleans per annum
1
3
10 year Running Cost nominal figure / ratio
1
3
10 year Whole of Life / ratio
1
6
APPLICATIONS