Desludge and clean the cistern

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The ecological advantages of a cistern are obvious. Drinking water is saved and there are no sewer fees for Gieswasser. Depending on the size of the cistern, it has to be desludged and cleaned at annual intervals.

There is free rainwater from the cistern.
There is free rainwater from the cistern.

What you need:

  • cistern
  • Submersible pump or
  • Suction pump

Always clean and desludge the cistern with two people

  1. Dust, pollen, leaves etc. are always deposited in a cistern with the rainwater. washed in. Even with special cover grids on gutters or leaf collecting baskets above the downpipe, contamination cannot be completely prevented. That is why you have to clean and desludge a cistern regularly. As a guideline one can take one year per cubic meter of water. It makes sense to do the cleaning in late summer and autumn. A lot of water was used over the summer; H. less water has to be drained through the sewer for cleaning. In the rainy season (autumn and winter), the cistern fills up again to meet the demand for water in the coming spring and summer.
  2. Empty the cistern: First, the inlet must be diverted, e.g. B. in the canal. It is emptied either via the domestic waterworks or with the help of a suction pump or a submersible pump. A submersible pump must not be drained to the bottom of the cistern. It would soak up mud, run hot, and break. The suction hose of a suction pump must also always float in the water above the layer of mud, otherwise it would suck in mud and the hose would clog.
  3. When the water is drained, it descends to the bottom of the cistern. It is important that the desludging of the cistern is not carried out due to possible Danger from fermentation gases is always carried out in pairs. The sludge is carried to the surface in buckets. Here it can be used as garden fertilizer or disposed of as organic waste.
  4. When the coarse sludge is removed from the cistern, the walls and floor are cleaned with a pressure washer. The inlets should also be flushed through. The dirty water that has accumulated during cleaning is then pumped out. This completes the cleaning of the cistern and the inlet can be reconnected.
  5. The pump used should be flushed through with clean water.
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  6. It is also useful to clean the grille on the gutters and the leaf collecting baskets in front of the downpipes.

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