General Clinic Wastewater Treatment System Meets Standards

Wastewater treatment technology for polyclinics

- Technology to treat polyclinic wastewater must be technology that can handle wastewater from sources flowing into the equalization tank. Submersible mixers will mix wastewater evenly over the entire tank area, preventing Prevents sedimentation in the tank causing unpleasant odors. The regulating tank has the function of regulating the flow and concentration of wastewater entering the treatment plant.

Then, wastewater is led through anoxic tank and aerotank clusters.

- Anoxic tank combined with aerotank is selected for general treatment: BOD reduction, nitrification, NH4+ reduction and NO3- reduction into N2, Phosphorus reduction. By choosing an activated sludge tank that combines anoxic and aerobic treatment processes, it will take advantage of the amount of carbon when removing BOD, so there is no need to supply additional carbon from outside when needing to remove NO3-. , saving 50% of oxygen when nitrifying and reducing NH4+ due to taking advantage of the amount of oxygen from the NO3- reduction process.

- Amount of air supplied to the tank for the purpose of: (1) providing oxygen for aerobic microorganisms to convert dissolved organic matter into water and carbon dioxide, organic nitrogen and ammonia into nitrate NO3-, (2) mixing Equalizing wastewater and activated sludge creates conditions for microorganisms to have good contact with the substrates that need to be treated, (3) releasing gases that inhibit the life process of microorganisms. These gases are produced during the process. Microorganisms decompose pollutants, (4) positively impact the reproduction process of microorganisms. The organic load of the tank during the aerotank treatment phase ranges from 0.32-0.64 kg BOD/m3.day and night.

Wastewater treatment technology for polyclinics

Equipment and supplies for wastewater treatment system of polyclinics

The main equipment and supplies used in the standard clinic wastewater treatment system include the following equipment and supplies:

• The main equipment used in the project is safely calculated in terms of capacity and number of backup equipment;
• Main equipment such as pumps, air blowers, etc. originate from advanced countries around the world;
• The equipment selected in the technology can withstand high corrosion when pH changes in a wide range (from 4 - 10), operate stably in wastewater environment, and is suitable for Vietnam's environmental conditions.
• Materials selected for installation can withstand high corrosion when pH changes from 4–10, and are durable in wastewater environments;
• Materials used are guaranteed to comply with standards and TCVN, available on the market, convenient during maintenance, repair or replacement.· ➕Power supply for pumps, air blowers... and for the entire cabinet Electricity is calculated in accordance with the system's needs;
• Equipment such as pumps, air blowers, etc. are operated in 3 modes: automatic (Auto), manual (Manual) and inactive (Off).

Advantages of polyclinic wastewater treatment systems

✔️ Ensure the quality of treated water meets standards according to current legal regulations;
✔️ Treat nutrients (nitrogen, phosphorus) in wastewater. This is the outstanding feature of the  polyclinic wastewater treatment  system compared to other technologies. Other technologies often do not meet these targets;
✔️ This is an environmentally friendly technology, no chemicals are used in the processing process;
✔️Short construction and installation time;
✔️ Low operating and maintenance costs, stable treatment efficiency.
✔️ Smaller space requirements than traditional wastewater treatment equipment.
✔️ Saves usable space;
✔️ Low operating and maintenance costs;
✔️ Harmony with existing buildings

Disadvantages of the system

• Operating staff need to be trained on operating the wastewater treatment system of polyclinics applying microbiological technology and non-chemical disinfection technology;
• The quality of treated wastewater can be affected if one of the units in the station is not operated according to technical requirements;
• Typical construction and installation projects of wastewater treatment systems for general clinics  of E&C Vietnam environmental technology services company