I. Product Features:

1. The complete set of equipment can be installed below the frozen layer or placed on the ground. The surface above the equipment can be used for landscaping or other purposes, without the need for construction or heating/insulation.

2. The secondary biological contact oxidation process employs plug flow biological contact oxidation, treating either complete mix or secondary series complete mix biological contact oxidation ponds. It is smaller in volume than an activated sludge pond, exhibits adaptability to water quality and resistance to shock loads, and ensures stable effluent water quality without sludge bulking. The pond uses elastic three-dimensional media with a large specific surface area, facilitating easy attachment and detachment of microorganisms. Under the same organic load, it can enhance the removal rate of organic matter and increase the solubility of oxygen in the water.

3. The biochemical pool employs the bio-contact oxidation method, featuring low volume loading of fillers. Microorganisms are in their own oxidation stage, resulting in minimal sludge production. It is necessary to empty the sludge every 3 to 6 months (either by pumping with a manure truck or dewatering into sludge cakes for external transport).

4. The odor control method for this underground domestic wastewater treatment equipment includes conventional high-air exhaust, along with soil deodorization measures.

5. The entire equipment processing system is equipped with a fully automatic electrical control system, ensuring safe and reliable operation. It generally requires no dedicated personnel for management and only requires timely maintenance and care for the equipment.

II. Characteristics of the Submerged Sewage Treatment Plant:

1. Capable of treating comprehensive domestic wastewater systems and similar organic effluents.

2. Made of steel with anti-corrosion treatment or fiberglass, featuring corrosion resistance and aging resistance.

3. The complete set of equipment is easy to install and operate, with all machinery and equipment controlled by automation. The entire setup can be placed underground.

Section 3: Application Scope of Subsurface Sewage Treatment Facilities:

1. Living, food, industrial, hotel, restaurant, etc.

2. Residential communities, villages, townships

3. Train stations, airports, seaport terminals, vessels, highways;

4. factories, mines, tourist attractions, scenic spots

5. Various industrial organic wastewater similar to domestic sewage.