The living standards of rural residents in our country have significantly improved. The rural water supply industry has been continuously developing. Due to the widespread use of facilities such as showers, washing machines, and toilets, the amount of domestic wastewater in rural areas has increased. The untreated domestic sewage is discharged along roadside ditches or road surfaces into nearby water bodies, causing serious harm to the rural ecological environment and has become an important pollution source for regional water environments.

I. Water Quality Characteristics

The nature of most residents’ domestic sewage is quite similar, and the quality of the sewage is relatively stable. Compared to urban sewage, it has a higher content of organic matter, nitrogen, phosphorus and other nutrients. Generally, it does not contain toxic substances. The sewage also contains synthetic detergents as well as bacteria, viruses, and parasite eggs. The quality of the sewage varies at different times.

II. Characteristics of Residential Domestic Sewage Treatment Equipment

1. It can treat comprehensive domestic wastewater and similar organic sewage.

2. It adopts steel structure with excellent characteristics such as anti-corrosion, corrosion resistance, and anti-aging.

3. It can be fully buried or partially buried. The complete set of equipment is simple to install and easy to operate. All mechanical equipment is automatically controlled and is set below the ground surface.

4. The management and maintenance are convenient. The equipment is equipped with a fully automatic control system.

III. Scope of Use for Domestic Sewage

1. Hotels, restaurants, sanatoriums, hospitals.

2. Residential communities, villages, towns.

3. Stations, airports, seaports, ship docks.

4. Factories, mines, military units, tourist attractions, scenic spots.

5. Various industrial organic wastewater similar to domestic sewage.