Heating of septic tanks and sewer pipes of a country house

An autonomous sewer system laid on the surface or in the soil at a depth that is less than the depth of its freezing requires effective thermal insulation and / or heating. Complete warming of all elements of the pipeline is often ineffective, difficult or impossible, for example, with a high occurrence of groundwater. In such cases, it is advisable to install cable systems for heating the outer part of the sewer pipeline, the connecting pipes of the septic tanks and the tanks themselves, the branches of the filters, water pipes, designed to direct the treated effluents to drainage wells or to aeration fields.

Types of cable heating

The simplest option to implement is the purchase of finished heat-insulated pipes with a laid cable. An obstacle to the implementation of this method is usually the high price of factory-made kits. From a financial point of view, it is more advisable to buy electrical equipment and mount it yourself. The heating system can be installed on new and existing pipelines. There are several options available for use on a private plot.

Sewerage Heating System

Resistive cable

Otherwise, this product is called a constant heating cable that does not allow power control and requires constant monitoring. The resistive cable consumes the same amount of energy and generates the same amount of heat, regardless of the external conditions. It can be single-core or two-core. In the first embodiment, the beginning and end of the conductor are connected to a power source. In the second - one end is connected to a power source, the other is equipped with an end sleeve. In addition to conductive cores, the product contains: insulation, a metal screen or a layer of high-temperature filament, an outer protective sheath, which can be made of various materials.

Resistive cable design

Features of resistive cable:

  • This is the most simple and inexpensive cable product that maintains stable performance over the entire operational period.
  • It goes on sale in sections of a fixed length without the possibility of cutting it into parts.
  • The overlap of two cable lines will lead to their overheating, and then melting of the insulation and the plastic pipe itself.
  • It is applied to pipes with a diameter no more than 40 mm.

Self-regulating cable

This product has a different device and principle of operation. Inside the insulation of polymeric materials are two conductive conductors, between which is a self-regulating polymer matrix.

Self-regulating conductor

Product Features:

  • Changing the amount of heat generated depending on the ambient temperature prevents the possibility of overheating.
  • During installation, overlaps of lines are possible.
  • Cutting into sections of the required length is allowed.

Cable Management Methods

The heating of sewer pipes laid in the ground and on the surface can be external and internal, the septic tank is heated from the inside.

  • The cable mounted on the outside is fixed to the pipe using aluminum tape and cable ties. Next, insulation is made with foam, from which special shells are made.
  • When heating from the inside, there are some limitations - shrink tubes and end couplings should not come into contact with drains due to the likelihood of a quick loss of performance. This method is usually used in areas of small length.

The video clearly shows how to make heating the sewer using a cable:

Now you know how heating of septic tanks and external sewage pipes can be performed. We hope that the information provided was useful and understandable to you!


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