Technology

Using innovative and continuously improved technologies in our plants, we create unique selling propositions for the benefit of our customers:

  • Low space requirements with associated weight savings and highest efficiency
  • Flexible design and special solutions in coordination with our customers
  • Ecological end economic operation in conjunction with low maintenance costs
  • High operational safety for many years
  • Safe compliance with legal provisions and limit values, even in special areas
  • Use of high-quality materials and components
  • Extremely resistant and operation-safe filter technology with excellent efficiency

The Jet-Zone-Reactor (JZR)

JZRThe high performance JZR (jet zone loop reactor) bioreactor represents a newly developed aeration technology which operates according to the injector principle for the treatment of waste water in the plant-specific biological cleaning stage. Due to the high throughput performance and the compact construction of the reactor this treatment technology has very low space requirements. Up to 75% of the space requirements of a conventional waste water treatment plant can be saved by using the JZR system. Its special construction without moving parts ensures low maintenance and high operational safety for many years.

The reactor is divided in two parts; the jet zone mixes while the reaction zone determines the retention time.

The waste water is introduced into the lower part of the jet zone together with the activated sludge via a two-substance-jet with interior air gassing. Here, the bacteria are intensively mixed with air and waste water substrate. The multiple deflection of the liquid creates a loop flow in the jet zone, achieving an optimal loading of the biomass with the substrates. A part of the mixture of three substances flows from the baffle plate to the upper reactor zone (= reaction zone), where the bacteria form bigger flake agglomerates and react to exhaustion. Another loop forms in the reaction zone, driven by the gas content difference between the mixture of three phases in the ring zone and the plug-in tube.

The Biomass-Separation Unit (BMSU)

BMSUThe membranes developed and manufactured by DVZ-SERVICES are operated according to the so-called “cross flow principle”; they are installed outside the bioreactor in order to ensure easy accessibility. Thanks to the use of a high-quality and durable alloy, the membrane modules can be used in a wide range of pH, pressure and temperature situations. A specially-developed automatic cleaning system ensures long and trouble-free periods of operation.The modules can normally be cleaned in place (CIP); no regular exchange is required. No additional disinfection stage or the use of chemicals in order to comply with limit values, e.g. as set by the IMO, or in special areas, is necessary. This makes the system an economic and low-maintenance solution for our customers.

Membrane filtration with the Biomass-Separation Unit (BMSU) is a method for separating the suspended particles or dissolved materials according to the molecular weight and size. Due to the differential pressure, the membrane acts as a sieve. Particles which are smaller than the membrane pores size, will pass as “permeate”. The larger particles will remain concentrated behind the diaphragm wall.