DE102005056114A1 - Device for sterilization of sewage in small sewage treatment- and purification plant with sequencing batch reactor procedure, and other technical plants by simple device, consists light source producing UV radiation and optical fiber - Google Patents

Abstract

The device for sterilization of sewage in a small sewage treatment plant (5) and a purification plant with a sequencing batch reactor procedure, and other technical plants by a simple device, consists a light source (3) producing UV radiation for sterilization of the sewage and optical fiber (6). The control of UV light source is carried out over time, sewage quantity or other control quantity. The contamination of UV light sources or the optical fiber is detected by sensors. A message signal detected by the sensor is produced at the control of the sewage plant. The device for sterilization of sewage in a small sewage treatment plant (5) and a purification plant with a sequencing batch reactor procedure, and other technical plants by a simple device, consists a light source (3) producing UV radiation for sterilization of the sewage and optical fiber (6). The control of UV light source is carried out over time, sewage quantity or other control quantity. The contamination of UV light sources or the optical fiber is detected by sensors. A message signal detected by the sensor is produced at the control of the sewage plant, or an automatic cleaning of the optical fiber or the UV source is carried out. The size, arrangement and the number of the UV light sources, shape and size of the protective tube as used materials in the plant, length of the optical fiber and placement of UV light source and optical fiber, vary with respect to place, geometry and material according to the requirement and size of the plant. In an alternative arrangement for sterilization of sewage procedure, devices are attached for the mechanical, manual or automatic cleaning of the lamp and/or the fiber.

Description

small wastewater treatment or small wastewater treatment plants decentralized wastewater disposal in rural areas, in those for economic or other reasons out no sewer connection is present or is or can be made.

Here will be out of the existing legal obligations resulting need for wastewater treatment by small sewage treatment plants or small sewage treatment plants realized.

at wastewater treatment with small sewage treatment plants or small sewage treatment plants was the elimination of organic wastewater ingredients and the nitrogen compounds so far in the foreground. The sterilization wastewater is in use in small sewage treatment plants and small sewage treatment plants still a very elaborate one and costly process. Known for sterilizing sewage are the methods of membrane filtration (germs are filtered out) or the UV sterilization by means of a UV lamp.

at closer here considered sterilization by means of a UV lamp are currently on the market corresponding complete systems known and available, which are not special on

• • geringe Anschaffungskosten
• • einfache Technik
• • einfacher Einbau
• • einfache Wartung
• • keine zusätzlichen Behälter

Special requirements in the area of a small sewage treatment plant are:

• • low acquisition costs
• • simple technique
• • easy installation
• • easy maintenance
• • no additional containers

Of the However, the invention described herein is based on the idea For the first time in a simple way a UV sterilization in small sewage treatment plants or small sewage treatment plants to operate. The invention is based essentially on an innovative Germination unit in wastewater treatment plants, preferably in small wastewater treatment and small sewage treatment plants with SBR method, consisting of a UV lamp and a light-conducting Medium.

SBR systems consist in an exemplary embodiment according to drawing A from a container ( 14 ), via a supply line ( 1 ) Wastewater flows. In a part of the container ( 15 ) is the sludge storage and the buffer. With a compressed air lift ( 12 ), the wastewater is added in portions to the SBR reactor ( 16 ). There, the wastewater via an appropriate entry device ( 11 ) Atmospheric oxygen by means of a compressor ( 4 ). After completion of the biological wastewater treatment process, the biomass settles on the bottom of the container ( 14 ). The biologically treated wastewater is now released via the compressed air lift ( 8th ) in the clear water tank ( 7 ) and from there into the process ( 2 ).

The invention now provides a UV radiation generating light source ( 3 ) (often also called UV lamp) outside the small wastewater treatment plant, in an exemplary embodiment in the control cabinet of the small wastewater treatment plant ( 5 ) or another container.

The light generated by the UV lamp is now a light-conducting medium in a process design, an optical waveguide ( 6 ) led from glass or plastic fibers in the small wastewater treatment plant. There, the light in an exemplary embodiment in the sampling container ( 7 ) or another room-forming unit. Due to the UV light that appears there, the wastewater is sterilized. The exemplary arrangement of the optical waveguide in the clear water tank ensures that the entire wastewater must pass through the lamp and thus sterilization is ensured.

One Another advantage of this invention is that the UV lamp even outside the sewage plant is arranged. Especially against the background that in one Such small sewage treatment plant explosive Gases can occur such an arrangement is of particular importance. It would be the lamp within the small sewage treatment plant arranged, must correspondingly elaborate activities to ensure the legally required explosion protection carried out be (ex safe execution).

• – Zur Reinigung des Lichtwellenleiters oder der UV-Lampe wird dieser bzw. diese in einer leicht demontiertbaren Weise befestigt
• – Größe und Anzahl der Lampen bzw des Lichtwellenleiters können entsprechend der Anlagengröße bzw. den spezifischen Anforderungen entsprechend variieren
• – notwendige Befehle zum Ein- und Ausschalten der Lampe können durch die Steuerung der Kleinkläranlage oder eine separate Steuerung erzeugt werden.
• – Im Bereich der UV Lampe (10) oder im Bereich des Austritts des Lichtes aus dem Lichtwellenleiter (9) kann ein Sensor eingebaut werden, der die Intensivität der UV Lampe während des Betriebes ständig misst. Damit kann frühzeitig eine Verschmutzung bzw. Abnutzung festgestellt und eine Reinigung oder ein Austauschvorgenommen werden. Die dazu notwendige Verarbeitung des Signals des Lichtsensors und die zu erzeugende Wartungsmeldung kann über die vorhandene Steuerung der Kleinkläranlage oder eine separate Steuerung verarbeitet werden.
• – Zur Realisierung des Verfahrens und der Vorrichtung können verschiedene Materialien und Werkstoffombinationen eingesetzt werden
• – Bestehende Anlagen können auf einfache Weise nachgerüstet werden.
• – Durch Kombination dieses Verfahrens mit einer Vorrichtung zur Erfassung das Wasserstandes kann die Lampe bedarfsgerecht zu- und abgeschaltet werden
• – Das Verfahren kann auch in anderen Kleinkläranlagen genutzt werden (z.B. Festbettanlagen oder SBR-Anlagen mit Tauchmotorpumpen)

Embodiments of the method are:

• - To clean the optical waveguide or the UV lamp, this or this is attached in an easily dismantled manner
• - The size and number of lamps or the optical fiber can vary according to the size of the system or the specific requirements
• - necessary commands for switching on and off the lamp can be generated by the control of the small wastewater treatment plant or a separate control.
• - In the area of the UV lamp ( 10 ) or in the region of the exit of the light from the optical waveguide ( 9 ), a sensor can be installed which constantly measures the intensity of the UV lamp during operation. This can be detected early soiling or wear and a cleaning or replacement can be made. The necessary processing of the signal of the light sensor and the maintenance message to be generated can via the existing Control the small wastewater treatment plant or a separate control process.
• - For the realization of the method and the device different materials and combinations of materials can be used
• - Existing systems can be easily retrofitted.
• - By combining this method with a device for detecting the water level, the lamp can be switched on and off as needed
• - The process can also be used in other small wastewater treatment plants (eg fixed bed plants or SBR plants with submersible pumps)

Under The No. 10258349.8 was already the control of small wastewater treatment plants Patent pending by means of pressure sensor. In conjunction with this procedure can in a process design a simple sterilization of the Waste water according to the sewage treatment plant supplied wastewater done to quantity-dependent To achieve sterilization.

Claims (6)

Method and device for sterilizing wastewater in wastewater treatment plants, preferably in small sewage treatment plants and small sewage treatment plants with SBR procedure, as well as other technical installations by means of a simple device consisting of a UV rays generating Light source and an optical fiber Method and device for sterilizing wastewater in wastewater treatment plants, preferably in small sewage treatment plants and small sewage treatment plants with SBR method, as well as other technical equipment according to claim 1 characterized in that the use in both new plants as well as existing installations (retrofitting). Also The process can be used in other small wastewater treatment plants or small sewage treatment plants such as. Fixed bed plants and other technical equipment are used. Method and device for sterilizing wastewater in wastewater treatment plants, preferably in small sewage treatment plants and small sewage treatment plants with SBR procedure, as well as other technical installations after one or more of the preceding claims characterized that the circuit of the UV light source over time, wastewater or other tax variables are made can. The control can over existing controls take place. Alternatively, the drive the method / the device are executed with its own control. Method and device for sterilizing wastewater in wastewater treatment plants, preferably in small sewage treatment plants and small sewage treatment plants with SBR procedure, as well as other technical installations after one or more of the preceding claims characterized that the size, arrangement and the number of UV light sources as well as the shape and size of the protective tube as well as the materials used and the length of the optical waveguide and accommodation of UV light sources and optical fibers with respect to Place, geometry and material vary according to requirement and size can. Method and device for sterilizing wastewater in wastewater treatment plants, preferably in small sewage treatment plants and small sewage treatment plants with SBR procedure, as well as other technical installations after one or more of the preceding claims characterized that about one or multiple sensors polluting the UV light sources or of the optical fiber detected during and a corresponding message is generated on the controller or an automatic cleaning is carried out. Method and device for sterilizing wastewater in wastewater treatment plants, preferably in small sewage treatment plants and small sewage treatment plants with SBR procedure, as well as other technical installations after one or more of the preceding claims characterized that the UV light source or the optical fiber for cleaning purposes easy to disassemble. In an alternative process design can Devices for mechanical, manual or automatic cleaning be attached to the lamp and / or the optical waveguide.