Insoluble adsorber resin suitable for treating drinking water and sewage

DETAILED DESCRIPTION What we claim is: 1.
An insoluble adsorber resin comprising a matrix based on a crosslinked organic polymer containing aromatic nuclei, in which the polymer is substituted by 0.
05 to 1.
2 chlormethyl groups per aromatic nucleus and the chlorine in the chlormethyl group is partially reacted with ammonia or an amine to form aminomethyl groups, the ratio of the resulting aminomethyl groups to the chlormethyl groups being in the range of from 5:95 to 80:20.
2.
The resin as claimed in claim 1, in which the polymer is a copolymer of an aromatic monovinyl compound and at least one aromatic polyvinyl compound.
3.
The resin as claimed in claim 1, having a porosity of from 20 to 80% by volume.
4.
The resin as claimed in claim 1, having an active surface of from 10 to 1000 m.
sup.
2 /g.
5.
The resin as claimed in claim 1, in which the ratio of the resulting aminomethyl groups to the chloromethyl groups is in the range of from 5:95 to 60:40.




Description:
This invention relates to an improved process for removing odour- and taste-producing substances from water, and to a new macroporous adsorber resin.
Hygienically satisfactory drinking water is becoming increasingly difficult to supply on account of worsening pollution, especially of rivers.
Because reserves of drinking water are limited, increasing demand is making it necessary to use basically undrinkable bank filtrates and surface waters.
The methods previously used to convert waters of this kind, which are heavily polluted by organic and inorganic substances, into a physiologically acceptable drinking water are unsatisfactory.
Processes for removing taste- and odour-producing substances from water (so-called drinking-water conditioning processes) have already been proposed.
For example, active carbon can be used for the treatment of drinking water.
One serious disadvantage of processes of this kind is that, after only a short time, the active carbon is no longer able to adsorb the oleophilic odour- and taste-producing substances which are present in the water and which can be extracted with chloroform, with the result that the quality of the water thus treated is unsatisfactory (cf