Henan Guoqing Environmental Protection Technology Co., Ltd
Urban wastewater treatment equipment
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Urban wastewater treatment equipment is an industrial system capable of efficiently treating domestic sewage, industrial effluents, and other types of wastewater, thereby preventing the direct discharge of pollutants into water bodies. It plays a vital role in improving the ecological environment, enhancing urban quality, and promoting economic development.
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Urban wastewater treatment equipment is an industrial system capable of efficiently treating domestic sewage, industrial effluents, and other types of wastewater, thereby preventing the direct discharge of pollutants into water bodies. It plays a vital role in improving the ecological environment, enhancing urban aesthetics, and promoting economic development.
Application Areas of Urban Wastewater Treatment Equipment
Underground wastewater treatment equipment is suitable for treating domestic sewage and similar industrial organic wastewater from residential communities, hospitals and sanatoriums, office buildings, shopping malls, hotels, restaurants, government agencies, schools, military units, seafood processing plants, livestock processing facilities, dairy processing plants, and other similar sources. It is particularly well‑suited for the treatment of organic wastewater generated in industries such as textiles, brewing, papermaking, leather tanning, food processing, and chemical manufacturing. The primary objective is to treat domestic and comparable industrial organic wastewater to meet reclaimed‑water quality standards, thereby enabling the resource‑based reuse of treated effluent.
Schematic Diagram of Wastewater Treatment Process
The WSZ‑A type equipment is primarily designed for treating domestic wastewater and similar industrial organic wastewater. Its main treatment process employs a well‑established biochemical method—the contact oxidation process. The design parameters are based on typical domestic wastewater quality, with an influent BOD of 200 mg/L and an effluent BOD of 20 mg/L. The system comprises six major components: (1) hydrolysis‑acidification tank; (2) contact oxidation tank; (3) secondary sedimentation tank; (4) disinfection tank and disinfection unit; (5) sludge storage tank; and (6) blower room and blowers.
Process Flow Description
After anaerobic fermentation in the septic tank, the wastewater flows into the equalization basin, where it is homogenized and its flow rate is stabilized before being pumped to the Grade A anoxic tank. In this biological treatment stage, heterotrophic bacteria hydrolyze soluble organic matter into organic acids, breaking down macromolecular organics into smaller molecules and converting insoluble organics into soluble forms. Additionally, proteins and fats are ammonified, while the nitrified effluent returned from the secondary sedimentation tank undergoes denitrification to remove ammonia nitrogen from the water.
In the O‑level biological tank, aerobic microorganisms and nitrifying bacteria are present; these microorganisms degrade organic matter into CO₂ and H₂O. Under sufficient oxygen conditions, the nitrification process carried out by nitrifying bacteria oxidizes NH₃‑N to NO₃⁻, which is then returned to the A‑level biological tank via recirculation. In the anoxic environment, heterotrophic denitrifying bacteria reduce NO₃⁻ to molecular nitrogen. The effluent from the contact oxidation tank flows by gravity into the sedimentation tank for solid–liquid separation. After sludge settles, the supernatant from the sedimentation tank is sent to the disinfection tank, and the disinfected wastewater meets discharge standards.
Main Features of Wastewater Treatment Equipment
1. Can be buried underground
2. Fully automated control; no personnel required for operation.
3. Simple operation and easy maintenance
4. Low noise, no odor
5. Long service life
Key Word：
Environmental protection equipment
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WhatsApp：8618737959990
Email：gqhbtop@gmail.com
Manager Liu：+8618737959990
Manager Yang：+8615037920517
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