Aquatron International AB

Biological WC solutions!


It is recommended that an Aquatron system in use should be inspected at two week intervals (approximately). By discovering possible disturbances at an early stage (and to correct them immediately), corrections can be made more easily as compared to cases where a minor disturbance over time have “built” up to a major functional disturbance.


On the top of the Separator is an inspection lid. Occasionally paper may get stuck in the Wire-ring. Open the lid and push the paper down by using a stick or a small pole. Too soft paper may “felt” too soon and there is then a risk that it may stick to the wires which may cause too much water to fall into the Bio Chamber. To avoid this it is recommended that you switch to another type of toilet paper. Depending on water quality (water containing e.g. high contents of Calcium or Iron) a coating may develop on the wires. If heavily coated, remove the parts and clean them with a brush.

ServiceMaintenance and drainage of the Bio Chamber
Check regularly the drainage of the Bio Chamber and the consistency of the compost. Also check that the paper in the Bio Chamber does not build up a pyramid which reaches up to the Separator since that might cause a stoppage in the Separator. If so, tilt the pyramid with a suitable tool, alternatively turn the composting chamber slightly or switch to the next composting compartment. In the Bio Chamber there must be a 4-6 cm layer of bark grinds evenly spread at the bottom. Add some compost from the garden in order to insert micro-organisms. By this the composting process will get a more rapid start. It is important to use coarse bark grinds NOTE: not peat moss. If it is too smooth it may block the drainage grid which will cause a wet compost. Suitable material is bark from pine or similar which may be acquired from garden shops or shops marketing composting products. After using the Aquatron for a couple of years the drainage layer may have to be renewed.


A balance between Carbon and Nitrogen is required for an optimal compost. In a latrine compost the Carbon comes mainly from the toilet paper and saw-dust (if inserted as sprinkling powder) while the Nitrogen is in the faeces. In the Aquatron systems a good balance between Carbon/Nitrogen is achieved when using normal amounts of toilet paper. If the compost, having a correctly installed Separator, is still wet; the reason might be too little Carbon. Then sprinkle some saw-dust over the compost.

KompostmaskVermi composting

To accelerate the composting process and to effectively reduce the volume (reduction with approx. 90% of the original volume), earthworms may be added (Eisenia Foetida, also called Dung Worm or Red Wiggler; or an equivalent specimen). The worms should be added after a couple of weeks of usage.Compost worms can normally be bought in gardening shops or in stores selling ecological products and equipments. The worms may also be found in garden compost heaps. The vermi composting process works best at temperatures between +12 and 25° C. In year-round living a temperature above +15° C is recommended in the room where the Bio Chamber is installed. At temperatures below +10° C the composting process and the activities of the worms is slowing down and their “food supply” will last longer which may be an advantage in summer houses which are inhabited for a longer period of time. After having switched to a new composting compartment the worms will remain in the previous filled compartment until it is fully composted. The worms will then migrate to the active composting compartment in their seeking for “fresh food”.The Bio Chamber must be installed in a frost free area for the survival of the compost worms

Emptying a Bio Chamber section

The Bio Chamber must be installed in a frost free area for the survival of the compost worms!June 2007 13 When the first used composting compartment reaches the emptying hole, remove the compost using a small shovel but leave a layer of approx. 5 centimetres thickness. This way you will leave the drainage layer intact (unless the layer has to be renewed). If the refuse has not become fully composted into soil, further composting might be needed.

_DSC3321Changing of UV light tubes in the UV unit.

If one UV light tube fails, both tubes should be exchanged for new ones. At the same time as the UV unit is opened for replacement of failing UV light tubes it is recommended that the inside of the UV unit should be cleaned. Check also that there are no sediments in the waterseal underneath the UV unit. Clean the waterseal if needed.WARNING! Do not expose your eyes or skin to direct UV light.

Aquatron International AB
Ekebyvägen 4
725 92 Västerås

Tel. +46 10 490 10 40