Domestic sewage treatment equipment in villages and towns

Domestic sewage treatment equipment in villages and towns

Domestic sewage mainly contains organic matter such as cellulose, starch, carbohydrates, fats, proteins, and may also contain pathogenic bacteria, viruses, and parasite eggs. In addition, wastewater also contains chloride, sulfate, phosphate, bicarbonate, as well as inorganic salts such as sodium, potassium, calcium, magnesium, etc. These wastewater contain high levels of nitrogen, sulfur, and phosphorus, and are prone to produce odorous substances under the action of anaerobic bacteria. The main sources of domestic sewage include the following aspects:

Toilet drainage: including toilet flushing, sink drainage, etc., which contain impurities such as feces, urine, toilet paper, etc.

Shower and laundry drainage: The wastewater generated by employees taking showers and washing clothes contains detergents, soap, hair, etc. ‌

Kitchen drainage: If there are kitchen facilities in the dormitory, dishwashing water, vegetable washing water, etc. may contain food residues, oil, etc.

Handling method and equipment process:

Grille: used to remove large suspended particles and floating impurities from water.

Regulating tank and lifting pump: The regulating tank is used to stabilize the water quality and quantity, while the lifting pump lifts the wastewater to the integrated sewage treatment equipment.

Hydrolysis and acidification tank: Wastewater in this tank is hydrolyzed and acidified into small molecule substances by hydrolysis and acidification microorganisms, which is beneficial for subsequent treatment.

Biochemical treatment: including contact oxidation tank, sedimentation tank, sludge tank, disinfection effluent tank, etc., aerobic decomposition is carried out through an aeration system.

Corrosion and noise prevention measures: Equipment pipelines are made of galvanized pipes or steel pipes that have undergone anti-corrosion treatment, and aeration pipes are made of ABS pipes. A series of measures are taken to reduce noise.

Equipment features:

1. Strong ability to withstand impact loads, with an average residence time of over 6 hours for contact oxidation method.

2. It has the ability to remove nitrogen and phosphorus, and can achieve the ability to treat industrial wastewater, domestic sewage, and urban sewage by adjusting the structure of the equipment.

3. The fillers in the contact oxidation tank are mostly composite soft fillers, which are lightweight, high-strength, physically and chemically stable, have a large specific surface area, strong biofilm adhesion ability, and high contact efficiency between sewage and biofilm.

4. The aeration tank is used in the contact oxidation tank for blast aeration, which continuously floats the fiber bundles, evenly aerates, and promotes the mature growth of microorganisms, with the characteristics of activated sludge process.

5. The effluent quality is stable, the sludge production is low, and it is easy to treat.

6. Submersible pumps can be installed in equipment to reduce project investment.

7. The equipment can be installed on the ground or buried underground. When buried underground, the upper cover can be used for greening, resulting in a smaller factory area and fewer ground structures.

8. Easy to achieve automatic control and simple management operation.

9. The device can be connected to a car to make a mobile integrated sewage treatment equipment.

Domestic sewage treatment equipment in villages and towns Scope of Application

The integrated sewage treatment equipment is suitable for the treatment and reuse of domestic sewage in residential areas, villages, towns, office buildings, shopping malls, hotels, restaurants, government agencies, schools, hospitals, highways, railways, factories, mines, tourist attractions, and similar small and medium-sized industrial organic wastewater such as slaughter, aquatic product processing, and food. The sewage treated by this equipment meets the national comprehensive sewage treatment discharge standard level B standard.