WST underground integrated sewage treatment equipment

1、 Equipment Overview

WSTThe series of domestic sewage and wastewater treatment equipment is designed and developed by our company's technical personnel based on the characteristics of domestic sewage and combined with advanced technology and engineering practice experience at home and abroad. This device combines the removal of COD, BOD5, and NH3, and is currently one of the most efficient sewage treatment equipment. The domestic wastewater treated by this device can meet the national discharge standards.

Scope of Application

This device is suitable for domestic organic wastewater and similar industrial wastewater, such as residential areas, villas, office buildings, hotels, canteens, bathing centers, small and medium-sized factories, hospitals and medical institutions, stations, airports, docks, commercial districts, parks, scenic spots and historical sites, schools, government agencies, slaughterhouses, highway service areas, railway vehicle maintenance depots and other places with high requirements for site and environment.

3、 Local features

1. Reliable technical performance and strong targeting, it is a specialized equipment for treating domestic sewage.

2. Advanced technology, compact structure, low energy consumption, and high degree of automation.

3. The buried sewage treatment equipment adopts a special anti-corrosion coating, which is acid, alkali, oil, and impact resistant. Chemical anti-corrosion measures can be taken according to customer needs.

4. This product is a multi machine combination equipment, suitable for a wide range of water quality treatment.

5. The equipment adopts biological contact oxidation process, which has good applicability to water quality, stable effluent quality, and suppresses sludge expansion.

6. Reasonable design, compact structure, small footprint, and easy operation and use.

7. After the sewage enters the host, the chemicals are automatically added in a proportional tracking manner. Ensuring the stability of the effluent quality.

8. Install noise reduction devices and sound-absorbing materials in the fan room to ensure that no noise pollution is generated.

9. The buried sewage treatment equipment is equipped with a fully automatic electronic control system, which does not require dedicated supervision and only needs to be maintained on schedule.

4、 Processing technology

The comprehensive wastewater flows through a grid to remove large suspended particles and enters the wastewater regulating tank; After the wastewater in the regulating tank is homogenized and evenly distributed, it is controlled by a liquid level gauge and pumped into the hydrolysis tank by a sewage lift pump. Anaerobic microorganisms are used to degrade pollutants such as N, P, CODcr, BOD5 in the wastewater. Elastic fiber composite packing is hung in the hydrolysis tank to increase microbial biomass. There is a high concentration of sludge mixture and biofilm in the tank, and organic matter is degraded by facultative bacteria, improving the biodegradability of the wastewater. Meanwhile, under the action of microorganisms, the process of converting organic nitrogen and ammonia nitrogen into N2 and NxO gases.

The effluent from the hydrolysis tank flows into the oxidation tank, and under the action of aerobic microorganisms, NH4+in the wastewater is converted into NO2- and NO3-. By utilizing the oxidative metabolism of aerobic microorganisms attached to the elastic packing in the pool, organic pollutants in the wastewater are decomposed, thereby reducing pollutant indicators such as BOD5 and CODcr. The effluent from the contact oxidation tank flows automatically into the sedimentation tank, and the settled sludge is appropriately transported by air lift into the sludge tank for digestion and treatment. The sewage from the sedimentation tank is mainly separated into mud and water before flowing into the subsequent clean water disinfection tank for standard discharge. The remaining sludge accumulated in the sludge tank is digested and regularly cleaned by a sludge pump for external transportation. The supernatant is returned to the hydrolysis tank for denitrification and denitrification treatment.

5、 Processing effect

After processing with this device, the following effects can be achieved: