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Impact of washings from water softener regeneration on municipal sewage systems and home
sewage treatment plants.
The regeneration process of the AQUAHOME ion exchange water softeners generates washings in
the volume equivalent to 5% of the total volume of treated water, that are discharged to the sewage
network. Regeneration washings are tap water containing elevated levels of chlorides in the range
3
between 100 and 155 mgCl/dm
.
Discharge of washings containing the above referred amount of chlorides to municipal sewage
3
systems is in full compliance with regulations (the norm is set at 1000 mgCl/dm
).
Discharge of regeneration washings to sewage chambers, cesspools or small biological home sewage
treatment plants should be executed with certain precautions.
In case of home sewage treatment plants, biological sludge is a breeding ground for bacteria which
decompose the sediments into the liquid state. Naturally, but also due to the content of chlorines in
regeneration washings, the amount of bacteria may be insufficient. This may adversely impact the
efficiency
of the sewage treatment process. In order to prevent biodegradation processes, it is
recommended to use agents that contain a wide range of bacteria. Such agents are an effective way
to aid the sewage treatment process.
Conditions of Technical Inspection for the operation of pressure devices, fitted the
AQUAHOME ion exchange water softener.
Pursuant to the Technical Inspection Act of 21 December 2000 (Polish Journal of Laws no. 122, item
1321) as well as the Regulation of the Minister of Economy, Labour and Social Policy of 9 July 2003
(Polish Journal of Laws no. 135, item 1269) with amendments, Article 15 paragraph 45 (1) of the Act
of 20 April 2004 on the amendment and repeal of certain laws due to obtaining membership in the
European Union by the Republic of Poland (Polish Journal of Laws no. 96, item 959), it is
authoritatively stated hereby that pressure devices fitted in the AQUAHOME ion exchange water
softener are subject to SIMPLIFIED TECHNICAL INSPECTION [Item 36 (TD [Technical Inspection ≤
3
+100°C i V ≤ 500 dm
)], AND THEREFORE SHALL NOT REQUIRE THE DECISION OF THE
OFFICE OF TECHNICAL INSPECTION OF RELEASING THOSE DEVICES FOR OPERATION.
It is also declared hereby that pressure devices of the ion exchange water softeners, referred to
above, fully conform with the technical requirements of the DIRECTIVES OF THE EUROPEAN
COUNCIL: 97/23 EC and 89/336/EEC.
It is also confirmed that ECOWATER SYSTEMS, a member of the Water Quality Association and
manufacturer of the water softeners referred to above, possess the ISO 9001 standard certificate as
well as valid hygienic certification authorising the use of water softeners for drinking water (issued by
the NSF and PZH [National Institute of Hygiene] - CERTIFICATE OF HYGIENE HK/W/0526/01/2010).
The Aquahome device assembly in the household sewage treatment system must be
compliant with the treatment system's manufacturer.
The manufacturer is not responsible for damage of the household sewage treatment
system resulting from the use of the Aquahome device.
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