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Biological treatment of wastewater

Liquid purification or separation – Processes – Treatment by living organism
Patent

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Biological treatment of water

Liquid purification or separation – Processes – Treatment by living organism
Patent

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Biological treatment plant controlled by fluorescence sensors

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Transparent
Patent

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Biological treatment plant for liquid suspensions

Liquid purification or separation – Recirculation – Serially connected distinct treating or storage units
Patent

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Biological treatment process

Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate

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Biological treatment process

Liquid purification or separation – Processes – Treatment by living organism
Patent

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Biological treatment system and assembly

Liquid purification or separation – With gas-liquid surface contact means
Reexamination Certificate

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Biological waste conversion system

Liquid purification or separation – With means to add treating material – Directly applied to separator
Patent

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Biological waste fluid cleaner

Liquid purification or separation – Flow – fluid pressure or material level – responsive
Patent

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Biological waste treatment process and apparatus

Liquid purification or separation – Processes – Treatment by living organism
Patent

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Biological waste water purification process and device

Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate

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Biological waste water treatment apparatus and a method of produ

Liquid purification or separation – With gas-liquid surface contact means
Patent

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Biological waste water treatment system

Liquid purification or separation – With gas-liquid surface contact means – With separator
Reexamination Certificate

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Biological waste water treatment system

Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate

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Biological waste water treatment system having a sedimentation t

Liquid purification or separation – Serially connected distinct treating with or without storage... – Diverse
Patent

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Biological waste-water-treatment method

Liquid purification or separation – Processes – Treatment by living organism
Patent

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Biological wastewater purification with a downstream precipitati

Liquid purification or separation – Processes – Treatment by living organism
Patent

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Biological wastewater treating system

Liquid purification or separation – Processes – Treatment by living organism
Patent

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Biological wastewater treatment process

Liquid purification or separation – Processes – Treatment by living organism
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Biological wastewater treatment process and reactor

Liquid purification or separation – Processes – Treatment by living organism
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