A key measure in times of extreme weather conditions
Rainwater Retention and Water Storage
Climate change not only leads to more intense and frequent heavy rainfall events but also to longer periods of drought and water scarcity. These extreme climatic conditions can cause floods and significant damage to buildings and infrastructure while simultaneously depleting valuable drinking water supplies.
Given these multifaceted challenges, rainwater retention and water storage are of crucial importance.
Rainwater retention involves temporarily storing rainwater to slowly release it into a public sewer or similar systems. This prevents peak loads on the sewer system and thus avoids local flooding.
At the same time, water storage allows for the management of drought periods and water scarcity, as the collected rainwater can be used during these times. This not only promotes sustainable water management but also enhances the water resilience of our communities.
There are various types of rainwater retention, including:
Open Rainwater Retention
This method involves collecting and retaining rainwater in open basins or ponds. Although this approach is relatively cost-effective, it carries the risk of algae formation due to standing water, which is exacerbated by higher temperatures resulting from climate change. Additionally, nutrients from the surrounding environment can accumulate in open basins, further promoting algae growth. This can not only affect aesthetics but also cause ecological problems.
An example of the environmental hazard posed by algal blooms was the environmental disaster in the Oder River from July to August 2022. It led to the mass death of 400 tons of fish, approximately half of the fish population in the Oder and its tributaries, as well as other organisms in and around the Oder.
Furthermore, open retention basins contribute to water evaporation, which is significant in times of climate change and rising temperatures, as this can add moisture to the atmosphere and promote storm conditions.
Closed Rainwater Retention
A more effective alternative is closed rainwater retention, as offered by the JUMBO BLOCK system. In this approach, rainwater is retained in underground block systems. This method not only minimizes the risk of algae formation, as the water is not exposed to direct sunlight and stands for shorter periods, but also reduces evaporation. Water can be effectively stored or infiltrated.
The JUMBO BLOCK system consists of large-volume concrete blocks that are, for example, laid beneath road surfaces. Each block has an impressive capacity of 13.9 m³ and can therefore retain large amounts of water. The water can then infiltrate into the ground or be used for various purposes such as irrigating green spaces.
The JUMBO BLOCK system thus offers a sustainable and effective method of rainwater retention, minimizing ecological problems, improving water quality, and being cost-efficient.
In times of climate change, it is a forward-looking solution for creating a more resilient and sustainable environment.
Infiltration of Rainwater
Rising Groundwater Levels
Sealed surfaces disrupt the natural water cycle, with only 25% of rainwater infiltrating the ground, while the rest becomes runoff or evaporates.
Challenges
Increased Demand
Rising water use by households, industry, and agriculture is depleting groundwater levels.
Overuse for Irrigation
70% of pumped groundwater is used for irrigation, endangering reservoirs.
Unsustainable Practices
Drilling new wells isn't sustainable and harms ecosystems.
Sustainable Water Management
Rainwater infiltration is key to sustainable water use, supporting groundwater recharge, reducing flood risks, and improving soil and water quality.
The JUMBO BLOCK rainwater harvesting and infiltration system is a modular solution designed to store and control the infiltration of rainwater.
The durable concrete modules can hold large volumes of water and are installed underground, preventing flooding and replenishing groundwater resources.
The system can function as a permeable or sealed reservoir, or as a combination of both, without limiting construction projects such as roads, squares, or buildings.
It is ideal for urban, industrial, and rural areas, offering an effective solution for water management and climate adaptation.
Benefits of Rainwater Harvesting and Infiltration
Irrigation and Domestic Use
Rainwater replaces drinking water, promoting sustainability.
Natural Cycle Restoration
Infiltration tanks help rainwater re-enter the natural cycle, improving groundwater quality.
Groundwater Recharge
Targeted infiltration prevents further depletion of groundwater levels.
Flood Risk Reduction
Infiltration reduces urban flood risks by managing runoff.
Soil Quality Improvement
Enhances soil moisture, supports plant growth, and reduces erosion.
