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Article | REF: W6602 V1

Non-collective sanitation of homes - Operation and sizing

Authors: Hervé PHILIP, André RAMBAUD, Jean-Luc VASEL

Publication date: February 10, 2008

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1. Pre-treatment techniques

1.1 Septic tank

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1.1.1 Functions

The all-water septic tank is a pretreatment device for domestic wastewater (all black water and household wastewater) that has two primary roles:

  • retention of solids (hydraulic settling and flotation phenomena);

  • hydrolysis (solubilization) and methanization (gasification) of the sludge produced, due to the retention of solids (biological phenomena of anaerobic digestion)....

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