1. Pre-treatment techniques
1.1 Septic tank
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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Pre-treatment techniques
Pre-treated effluent treatment techniques and water disposal
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