Solutions for odor and extraneous water issues in municipalities
Reduce odors. Limit extraneous water. Protect infrastructure. COALSI provides sophisticated solutions for municipal sewer networks – from odor reduction at manholes and street drains to targeted protection against extraneous water ingress.
Challenges
When sewers and treatment plants reach their limits.
Municipal sewer networks have a demanding job: they must transport wastewater reliably, handle large volumes of water during heavy rainfall, and operate with minimal odor. In practice, a wide variety of challenges arise depending on weather conditions, usage, sewer layout, and structural factors. COALSI offers well-engineered solutions to reduce odor nuisance and specifically limit the ingress of surface water.
Odors from the sewer system
During warm weather, low flow rates, and long retention times, odor-causing substances can develop in the wastewater. These odors can escape into the surrounding area through manholes.
Resident complaints
Odor nuisance from manholes affects the quality of life for residents, pedestrians, and nearby residential and commercial areas.
Extraneous water ingress during heavy rain
During heavy rainfall, surface water can enter the sewer network through street drains and manholes. This places additional strain on the sewer system and treatment plants, unnecessarily consuming existing capacity.
Different networks, different requirements
No two municipal sewer networks are the same. Manhole dimensions, installation conditions, loads, and areas of application vary. That is why you need solutions that can be adapted to each specific situation.
Consequences of a non-ventilated manhole
This video provides a striking demonstration of the damage hydrogen sulphide (H₂S) and the resulting biogenic sulphuric acid corrosion can cause to sewer infrastructure: the concrete surface is attacked, loses its structural integrity and begins to crumble away.
Our solution
Reduce odors. Relieve the sewer. Protect infrastructure.
COALSI offers modular solutions for various challenges in municipal sewer networks. Our odor filter systems neutralize odor-causing substances directly at the source without sealing the sewer. This maintains the necessary air exchange while simultaneously reducing odor nuisance. For extraneous water issues, we provide solutions that specifically limit the ingress of surface water.
Effective odor neutralization directly at the manhole
The sewer can still breathe
Flexible solutions for various applications
Reduction of extraneous water ingress during heavy rainfall
Recommended products for
Municipalities
Why COALSI?
Your benefits at a glance.
COALSI systems are designed for long-term use in sewers and public spaces. The main bodies are made of PE-HD containing 50% recycled material. PE-HD and stainless steel are corrosion-resistant materials, making them particularly well-suited for use in demanding environments.Thanks to robust materials and thoughtful design, our systems are built to last and engineered to minimize the need for replacement.
COALSI develops and manufactures its solutions in Germany. Short distances, direct communication, and the close integration of development, production, and customer requirements allow us to maintain strict control over our products and their quality.
Every application is different. COALSI helps you choose the right solution by taking into account local conditions, technical requirements, and your specific on-site needs. With our field service team, we are there for you in person throughout Germany. This gives you a dedicated contact person who understands your situation, can answer questions on-site, and work with you to develop the ideal solution.
How does the process work?
From your first question to the perfect solution.
Consultation
We will discuss your situation and clarify the requirements on-site together. We will then select the right solution for your application.
Easy DIY installation
Most COALSI products are easy to install yourself, allowing many applications to be implemented without the need for additional assembly services.
Technical support
If an installation situation is particularly challenging or requires a custom solution, our technical team can provide on-site support by arrangement. The installation will be tailored to your specific needs and quoted separately.
Frequently asked questions about solutions for
Municipalities
The most suitable solution depends on factors such as the manhole type, installation conditions, and the specific level of odor. COALSI offers various filter systems for different applications and will assist you in selecting the right solution.
Ja. Die COALSI Filtersysteme verschließen den Kanal nicht. Die notwendige Belüftung bleibt erhalten, während geruchsbildende Stoffe gefiltert werden.
COALSI provides solutions designed to specifically limit the ingress of surface water through street drains and manholes. The most suitable solution depends on the specific installation conditions and local requirements.
COALSI offers a range of systems to suit different shaft dimensions and installation requirements. We will work with you to determine the best solution.
The robust PE-HD base body with stainless steel lugs is designed for a very long service life and can be used for many decades under normal operating conditions. The filter mat is replaced regularly, depending on the level of wear.
Depending on usage, the service life of a COALSI filter mat is typically around 12 to 14 months.
Yes. Many COALSI systems can be retrofitted into existing shafts and installed without the need for extensive structural work.
No problem, we are happy to help. Get in touch.