Powerful Swiss partner for all wastewater questions. We have many years of experience in using chemical products in the treatment of water and wastewater throughout Switzerland.
CU Water Processing
Our specialists deal with all problems concerning water supply systems and wastewater purification both in the public and private sectors.
CU Water processing is committed to the economical use and environmental compatibility of its products. CU Water Processing is a part of Feralco (Schweiz) AG.
"Good service can only be achieved by collaborating with the customer."
This principle is of capital importance in the way we work. It is only by understanding our customers and their needs that we can successfully develop and implement optimal solutions. With this end in view we always talk directly to you, the customer. It is only after this dialogue that we will decide together on the most appropriate course of action and the most efficient products to be used.
Biotrans
Our climatic conditions: 150 to 200 days of rain per year! This means: on average 1m3 of rainwater per m2 per year and for a maximum rainfall this can reach 50 litres per m2 per day.
The effects of rain on the sewage treatment plant involve the following risks
- The amount of dry solid material drops
- The character of the sludge changes
- The activated sludge loses some of its purification capacity
- The amount of dry solids suspended in the water causes problems
With Biotrans
- No longer any problems with sludge discharge
- Good sedimentation properties
- Continuous nitrification throughout the year
- A higher degree of purification than previously achieved
Further advantages of Biotrans
- Biotrans® for an extremely stable processing in the sewage treatment plant
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Biotrans® was specially developed for the biological treatment of municipal and industrial wastewater and is prepared from aluminum-based raw materials
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Biotrans® owes its efficiency to stable floc formation in the activated sludge tank and rapid sludge sedimentation in the secondary sedimentation tank
Biotrans® has a high clarification performance thanks to stable plant processing even under high levels of hydraulic or sediment loading
Biotrans® are ideally suited for sewage treatment plants
- Flocculation and floc structure in the activated sludge have been unsatisfactory.
- The rate of sludge sedimentation has been inadequate.
- The level of suspended solids (SS) in the sewage treatment plant effluent has regularly exceeded acceptable limits.
- High influent loadings have pushed the plant to the limit of its capacity.
- Sudden input upsurges have led to sludge in the outlet.
- Filamentous bacteria have repeatedly caused bulking and floating sludge.
- The dry solids in the activated sludge have not been adjustable to the optimum value for stable plant operation.
- The extensive use of precipitants has prevented the formation of a healthy biological treatment tank.
- Nitrification has not been maintained throughout the year.
Applications
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Biotrans® can be used in all types of sewage treatment plants in the same way as normal precipitating agents. The best clarification performance is achieved when the sewage treatment plant has a well-functioning control system for return-sludge and excess sludge volumes as well as an efficient aeration system for the activation tank.
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Biotrans® works within seconds and this is why dosing takes place in a wastewater flow of high turbulence to ensure rapid and complete dispersal, preferably in the inflow to the activation tank.
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Biotrans® is added in low doses. The dose is based on the usual quantity of wastewater (dry period inflow, QWtA) and can be varied during the day to meet load changes.
Advantages
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Biotrans® stabilizes the process of biological treatment of sewage and thereby brings savings in everyday operation as well as improving clarification performance throughout the year.
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Thanks to correct dosing the level of residual salts in the purified water is considerably reduced. Moreover the small amount of chemical product employed in no way disrupts the growth of micro-organisms and in a short space of time there is a wide range of micro-organisms in the activated sludge.
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Biotrans® is simple to use and if problems do occur CU Water Processing specialists are there to help.
Start-up procedures
First to determine the correct dosage information about product storage, application location and method, as well as QWTA, C, N and P levels and their limits, is required.
Second Biotrans® is added and the installation regulated so that Biotrans® starts to work. For example by regulating the levels of dry material in the activated sludge tank or controlling return and excess sludge. At the same time a microscopic examination of the micro-organisms present is carried out.
Third the system is optimized and adapted to any special requirements.
