Small wastewater treatment plants

Condition assessment and rehabilitation
of existing concrete tanks

Since the early 1990s, concrete tanks for three-compartment septic tanks have been manufactured of quality-controlled reinforced-concrete components using concrete grade B 45. After 25 years in operation, they are frequently still in good or even very good condition provided that appropriate ventilation is ensured.

However, without biological treatment, septic tanks do not comply with the state of the art required and will have to be renewed or „fully biologically“ retrofitted by 2015 at the latest. This retrofitting obligation also applies to older biological systems which do not meet the...

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Issue 02/2013 Day 3: Thursday, 7th February 2013

Small wastewater treatment systems

Title Titel Restricted traffic of goods for small wastewater treatment systems despite CE marking? – trade obstacles imposed by national requirements, on the example of the General French Protocol...

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Issue 02/2014 Current safety-specific aspects

Construction and operation of small wastewater treatment plants

Safety during the construction and operation of small wastewater treatment plants is covered in many laws, regulations, and stan-dards. But a summary, simply accessible under the heading “small...

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Issue 02/2014 Consequences of the Production Products Regulation

Water-endangering substances and small wastewater treatment plants –

On 24 April 2011, the new Construction Products Regulation (CPR) came into force and, on 1 July 2013, replaced the previously valid Construction Products Directive in its entirety. The requirements...

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Issue 02/2016 The manufacturers’ viewpoint

Consequences of the new ECJ decision for small ­wastewater treatment plants and their operators

Since the effective date of December, 15, 2015, much more concerning small wastewater treatment plants has become clear – but just as much still remains unclear. The Federal Republic of Germany has...

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Issue 02/2015 Actual developments

Standards for small wastewater treatment plants

German and European standards are well established technical standards and they reflect the state of the art. Standards are a good instrument to manufacture comparable products and to distribute them...

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