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EP0396142A1
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Process and apparatus for controlling biological processes for phosphor and nitrogen removal in activated sludge plants
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DD293333A5
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Method for controlling biological processes for nitrogen and phosphorelimination in belech clip plants
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DD293334A5
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Apparatus for suspending bio sludge in anaerobic response levels of wastewater cleaning
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DD291639A5
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Biosensor and method for determining benzoat, phenol and their chlorine derivatives in solutions
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DD291316A5
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Small-cleaning system for mechanical-biological cleaning of home waste washers
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DD291250A5
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Method for cleaning fluid gases of waste waste burning
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DE3938844A1
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Purifying slow moving underground water by infiltration media - delivered from vertical shafts in two=stage process
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DD285966A5
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Method for preventing the thermal liquidation of included metal compounds in the regeneration of active carbon fuel carrier
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DD298905A5
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Process for conditioning organic suspensions
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DD288367A5
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Method for cleaning wastewater to increase process stability in biological-chemical phosphorelimination
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DD287727A5
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Multibay enzyme reactor
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CS275735B6
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Method of mesophilic or thermophilic anaerobic enzymatic conditioning of liquid organic substances and biological materials
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DD286973A5
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Method and device for separating lubricants from liquids
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DD286232A5
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Measuring device for determining process sizes for controlling wastewater treatment plants
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DD299583A7
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Process for the mesophilic or thermophilic aerob-enzymatic conditioning of liquid organic materials
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DD282902A5
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Method and appendix for biological phosphorous and nitrogen elimination
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DD282901A5
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Multi-stage process for biological phosphorous and nitrogen elimination from extractors preferably in a rectangular block
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DD282667A5
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Method and arrangement for the safety of operational safety in the hydraulic supplement of abrasive hazardous solids
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DD288189A5
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Method and device for preventing sedimentation in wastewater lines and channels
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DD277903A1
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Method for avoiding an irreversible depth collation of slow filters and sandbakes for groundwater enrichment
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