Water is one of our most precious resources. That is why there is also a growing interest in sewer cleaning with water recycling. Statutory requirements are increasingly being introduced which seek to standardize professional and sustainable sewer cleaning with water recycling worldwide.

Fast-growing cities equals increasing environmental pressures and problems. Therefore efficient, resource-conserving sewer cleaning systems are very important. The problem with conventional sewer cleaning without recycling is the high-water consumption in involves. Example: Jetting operations based on average performance consume 300 litres of water per minute. Assuming a daily jetting period of five hours, this gives over 24,000,000 litres per vehicle over a year period. In addition to this enormous consumption of natural resources, there are the very high costs of fresh water to also consider.

The Goal is to minimize the high volumes of drinking water used for sewer cleaning while simultaneously increasing the efficiency of the vehicles. This is only possible if a reliable water recycling system is used.

CONVINCING TECHNOLOGY

A Growing number of newly industrialized countries are starting to recognize the significant benefits that KAISER Technology brings.

 

 

 

How does water recycling work?

In the case of water recycling, the sewer jetting operation and the vacuuming of deposits are combined into one continuous process thanks to the simultaneous water treatment. The collected material in the form of solids and wastewater is vacuumed up and undergoes a treatment process directly on the vehicle. The solids are separated and the treated water obtained can be used again for high-pressure sewer cleaning. The treatment process utilizes the physical differences between solids and liquids. The key elements here are the higher density (sedimentation) and the size of the particles (filtration.) All the components of the recycling system and the high-pressure pump have been developed by KAISER in-House – and are optimally designed for their purpose. The combination of these technologies, which have been tried and tested over decades, has given rise to the creation of an extremely robust and efficient water recycling system. The simplicity of the design makes the system easy to operate and less time-consuming to clean as well as enabling a high vehicle payload.

Any operator using a vehicle with water recycling saves huge amounts of water and can work for hours with the “on-board water”. Therefore, eliminating time-consuming traffic jams and long trips to refill with fresh water. This saves fuel and prolongs the effective deployment time at the sewer. Furthermore, the material to be disposed of has a higher percentage of solid particles thanks to the dewatering effect. As a result, the efficiency of the vehicle is increased and the burden on the dump site is reduced.

Water recycling in Hungary

During a very difficult project in Hungary, for example, KAISER was the only supplier who was able to impress with a successful demonstration of water recycling: “While the first competitor took one look at the test section after opening the manhole cover and said water recycling couldn’t be done, the second gave up after 20 minutes because the filter was completely blocked up. The rugged KAISER Units have a higher level of availability because the pump system is unaffected by dirty water, the demonstration was a success.

Internationally successful under the toughest conditions

In places like Mumbai in India, the sewerage infrastructure has long been overwhelmed by the number of users. Despite the existence of a major sewerage system, there is no preventative maintenance and sewers are not cleared out until they are well and truly blocked. Garbage and sludge also clog up the open sewers, which were designed to handle heavy rains. Another problem is that sewer cleaning is still frequently performed manually and without professional protective equipment. In Central Europe, KAISER cleans the sewers by jetting the lines. In cities like these, however, proper earthworks are required, that can only be done with really strong machines. Another critical factor is the high volume of traffic, complete with waiting times and jams – that’s where the KAISER recycling Unit has a major advantage.

 

Benefits of KAISER Recycling

  • Robust system with High Efficiency, even under the toughest conditions

  • High vehicle payload thanks to low system weight

  • Simple handling and reduced cleaning requirements due to simplicity of the system.

  • Proven KAISER recycling technology – almost 35 years of international experience