Domestic Sewage

◆ Treatment process: MBR membrane + AO process

◆ Treatment water volume: 3-5000m³/d

◆ Treatment standard: pretreatment/municipal pipe/drainage/irrigation/level A standard, etc.

Domestic sewage treatment is common in sewage treatment. The treatment process is relatively simple and the process requirements are relatively low. The sewage sources mainly include the following components

Part 1: Kitchen wastewater, including water for washing various ingredients, water for washing dishes, and leftover soup;

Part 2: Water for flushing toilets, the main component of which is human feces and urine;

Part 3: Water for washing, including bathing water, face washing water, laundry water, etc.;

Part 4: Other miscellaneous water, including water for washing the ground in the community, washing cars, and seasonal rainwater, etc., which accounts for about 5% of the total water volume.

In general, these waters contain a lot of organic matter after mixing, specifically cellulose, starch, sugar, fat, protein, etc.; they also often contain pathogens, viruses and parasite eggs; inorganic salts such as chlorides, sulfates, phosphates, bicarbonates and sodium, potassium, calcium, magnesium, etc. The overall characteristics are high nitrogen, sulfur and phosphorus content, and under the action of anaerobic bacteria, they are prone to produce odorous substances.