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CZ195596A3
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Sewage or waste water bio-aeration
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CS570990A3
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Combined activation and secondary settling tank
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CS730788A3
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Activation and secondary settling tank with a joint wall
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CS149588A1
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Bar screen for rough material gripping in liquids
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CS108188A1
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Method of organically polluted sewage waters' biological treatment
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CS176986A1
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Method of activation process during niological sewage treatment
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CS246209B1
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Liquid's surface mechanical aeration device
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CS246709B1
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Mixer of liquid and gas
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CS212949B1
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Water purification plant for organically contaminated waters
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CS208280B1
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Process for aerobic stabilization of organic stuff containing sludge
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CS195196B1
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Mixing gassing through device
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CS197789B1
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Receptacle containing the mixing and depositing section
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CS196082B1
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Mixing tank
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CS195477B1
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Device for blowing air or gas into liquid
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CS195460B1
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Process for the purification of waste water at the increased flow of rain water
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CS187096B1
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Monoblock unit
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CS188486B1
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Device for stirring and gassing
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CS189981B1
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Tank containing at least two separating sections
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CS200599B1
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Transversal system of walls of technologic tanks bottom anchored
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CS186965B1
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Blending tank
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