How to effectively treat poultry farming wastewater?

Poultry Wastewater Treatment

Poultry wastewater mainly arises from activities such as cleaning, washing, and sanitizing poultry houses; troughs containing livestock feed. The flowing wash water carries along with it feces, feathers, and excess feed...

Treating poultry wastewater is a process that helps remove highly polluting components in water such as:

• Insoluble solids, suspended waste, SS, BOD, COD
• Organic compounds.
• Disease-causing microorganisms: Coliform, Newcastle Virus,...
• Biological pathogens in feathers, poultry manure such as Avian Influenza, Marek's disease,...

All of these are poultry waste components containing harmful substances to the environment and human health. It not only causes unpleasant odors but also pollutes the soil, reducing fertility. Additionally, untreated poultry wastewater can seep down and affect natural groundwater sources in the long run.

Small-Scale Poultry Wastewater Treatment Technology

Advantages of Poultry Wastewater Treatment Technology

In the face of alarming pollution levels, livestock feed wastewater treatment technology is a matter of concern for many businesses.

By effectively applying this technology, business owners can ensure environmental sanitation and also utilize waste as fuel, fertilizer,...

Applying treatment technology to the poultry industry has numerous outstanding advantages, such as:

• Efficiently treating organic waste to reduce COD and BOD levels, reducing Nitrogen, Phosphorus concentrations in wastewater to permissible levels.
• Simple operation and maintenance of machinery and equipment.
• Low investment and maintenance costs.
• Ensuring environmentally friendly outputs.
• Saving labor.
• Treated sludge can be reused as fertilizer for crops.
• After treating poultry feed wastewater according to the process, it can be used as irrigation water.
• Protecting the environment and human health.

Poultry Farm Wastewater Treatment Process

Mechanical, chemical, biological treatment methods can all be flexibly applied in the treatment process. Depending on the scale of the business, suitable methods will be chosen. Combining methods will result in high efficiency.

The process of poultry farm waste treatment is as follows:

Phase 1: Coarse Treatment - Solid Waste Removal

Initially, wastewater from cleaning and sanitizing poultry houses will be collected in a wastewater pit. Trash screens on the surface of the pit will remove large solid waste to prevent clogging of sources and pipes.

In the pit, methane gas will be collected. This gas can be used as fuel for industrial gas stoves, burners, furnaces,...

Phase 2: Conditioning Tank and Biological Tank

The wastewater after coarse treatment will flow into a conditioning tank. Here, with a continuous aeration system, the flow rate and pollution levels are stabilized.

Subsequently, the wastewater will be directed to a biological treatment tank, consisting of anoxic-anaerobic-aerobic tanks.

Anaerobic microorganisms will decompose organic matter and metabolize nutrients.

Anoxic, aerobic microorganisms in the tank will carry out biological reactions to reduce BOD, COD levels by up to 85%.

Furthermore, these microorganisms will also perform denitrification and phosphorus removal reactions. After decomposing organic matter, the microorganisms will produce a large amount of sludge (microbial remains).

Phase 3: Settling Tank and Disinfection Tank

The water generated from the aerobic biological tank will circulate back to the aerobic tank. The sludge from livestock will be transferred to the settling tank.

In the settling tank, sludge will settle at the bottom. After a period, the sludge will be treated (used as biological sludge fertilizer,...).

Regarding the wastewater, after significant pollution reduction, it will be sent to the disinfection tank. Disinfectants in the tank (Javen, Chlorine,...) will eliminate harmful microorganisms: Coliform, E. coli…

Phase 4: Pressure Tank

Under the pressure of water flow and gravity, remaining suspended poultry waste will be filtered and retained by filter media layers here.

Poultry wastewater treatment is completed in this pressure tank and can be discharged into the environment in compliance with safety and hygiene standards.

The above is the poultry wastewater treatment process shared by Toan A Company.

Treating livestock feed wastewater is a mandatory task in the operation process of the poultry industry. With years of experience in wastewater treatment, Toan A is always ready to share and accompany businesses. Contact us for the most effective advice and support.