City of Laatzen did a changeover: To proceed against the persistent unpleasant smell that comes out of the sewage system and sewage plants from now on the sewers will be provided with the substance SinoAir® from „et-projekt – The Olfactory“.
Everyone knows the problem: The unpleasant smell coming out of the manhole covers. The city of Laatzen is the first commune in the region of Hanover to count on SinoAir® to proceed against the persistent malodor and to save large amounts of money in the future. Because of the necessity of saving water nowadays many cities grapple with an „evil” smell from the sewer system. This is related to the fact that the sewer system is not appropriately flushed anymore and which causes deposits that bring out to the unpleasant smell. By these deposits, the renovation requirement of the waste water shafts is accelerated and will cause several billion euros of clean-up costs in many cities.
Two advantages of SinoAir®
The SinoAir® substance from the company „et-projekt – The Olfactory” which is now used in the city of Laatzen for the first time will not only eliminate the malodor but also tremendously minimize the high expenses.
The procedure already started in July 2015 when a SinoAir® batching assembly was installed at the reservoir of the pump house at Wilhelm-Henze-Weg. Following this, also an additional diffusion plant was installed on top of the pump house to ensure an ideal effect of SinoAir® and to eliminate the persistent unpleasant smell.
Where formerly gel pads or carbon filters hung into the shafts to minimize the malodor now the new substance SinoAir® is used, because the former measures only led to short-term success but did not solve the core problem.
The material properties of SinoAir® that obtain a significant reduction of the sulfuric acid concentration through to the uncritical range of <2ppM will either prevent the cities from a disagreeable smell and by the clearance of the deposits and rotting gases also postpone the refurbishment cycle for decades. Through this new, revolutionary system the city of Laatzen will prospectively save a lot of money. Therefore, also Ralf Wenig (team leader of the waste water division in Laatzen) is sure: “These savings leave more leeway for investments in other projects. “