Neutralising Filter

Main principles NFSS Neutralising Filter

The NFSS neutralising filter uses EWT compound as filter material. EWT compound consists of 99.1% calcium carbonate. Due to its micro crystal structure, EWT compound is superior to normal calcium containing materials. The filter house of the NFSS Neutralising filter is made from Stainless Steel 316L, which eliminates the corrosion problem.

The EWT compound is active for pH control, even after the removal of high concentrations of iron and manganese. The NFSS Neutralising Filter is normally integrated in the production line, between the Reverse Osmosis Units or Evaporators and the fresh water tank. The pH of the fresh water flow out of the Reverse Osmosis Unit or Evaporator is normally less than neutral pH 7, often pH 5.5 to 6.5. The NFSS Neutralising filter neutralises the water to approximately pH 7. With a neutral pH the produced fresh water is not aggressive and will no longer deteriorate your galvanized and copper piping.

The Installation contains:

  • Stainless steel filter housing, to eliminate the problems caused by corrosion
  • Sight glass
  • Air outlet valve
  • Colour of your choice without extra costs (standard colour light blue)

Advantages NFSS Neutralising Filter

  • Simple to operate
  • High reliability of the components
  • Simple maintenance
  
   
NFSS 20-40

Types NFSS Neutralising Filter

Drema Waterbehandeling B.V. can supply NFSS Neutralising Filters; in a range from 750 to 300.000 litres of potable water a day.
The standard NFSS Neutralising Filters are given in the table below.

Type
Capacity
(m3/24h)
Height
(mm)
Diameter
(mm)
In / outlet
(")
Weight
(kg)
NFSS 1 - 10
0,04 - 0,4
1180
220
½
95
NFSS 10 - 20
0,4 - 0,8
1315
325
¾
160
NFSS 20 - 40
0,8 - 1,6
1370
406
1
225
NFSS 40 - 60
1,6 - 2,5
1480
510
1¼
375

We can also produce a tailor-made Neutralising Filter to your own specifications.