In Shaanxi's livestock and poultry farming industry, pig farm wastewater treatment is a key project in environmental impact assessments. Pig farm wastewater is high-concentration organic wastewater, containing large amounts of fecal residue, urine, and feed residue. It is characterized by high ammonia nitrogen concentration, high COD levels, high suspended solids, large fluctuations in water quality and quantity, and a tendency to turn black and smelly. Many small and medium-sized, as well as large-scale pig farms in Shaanxi, commonly face problems such as excessive ammonia nitrogen levels in their wastewater, odor nuisance, unstable water quality, and failure to pass inspections. Many farmers frequently ask: Which company in Shaanxi offers the best pig farm wastewater treatment equipment? How can I choose reliable equipment and implement a compliant treatment solution for high ammonia nitrogen wastewater from pig farms?
DIEN integrated wastewater treatment equipment
To completely solve the problem of excessive pig farm wastewater, it is essential to understand the core reasons why high ammonia nitrogen wastewater is difficult to treat. The ammonia nitrogen content in pig farm wastewater far exceeds that of ordinary domestic sewage, and the carbon-to-nitrogen ratio is unbalanced. Ordinary simple sedimentation and filtration equipment can only remove surface suspended solids and cannot degrade pollutants such as free ammonia and organic nitrogen in the water. Simple equipment treatment can easily lead to problems such as inactivation of biological bacteria in the biochemical system and low denitrification efficiency. The treatment effect is even worse during the low temperatures of autumn and winter. Long-term excessive emissions not only pollute the surrounding soil and groundwater but also trigger environmental penalties and production shutdowns, seriously affecting the normal operation and production of pig farms.
Secondly, it is crucial to examine the manufacturer's technological capabilities and case studies. High-quality manufacturers do not use generic wastewater treatment processes. For high-ammonia nitrogen wastewater from pig farms, they use a mature core process of pretreatment + anaerobic digestion + two-stage A/O biological treatment + deep purification, achieving an ammonia nitrogen removal rate of over 90%, consistently meeting livestock and poultry wastewater discharge standards. It is also advisable to review the manufacturer's actual projects implemented in pig farms throughout Shaanxi Province. Manufacturers with numerous successful cases and a good reputation have more mature processes and stronger equipment stability, effectively mitigating the risk of water quality fluctuations exceeding standards. Furthermore, the equipment materials and configuration are critical. Pig farm wastewater is highly corrosive, requiring corrosion-resistant and pressure-resistant integrated tanks, coupled with a fully automated intelligent control system. This eliminates the need for dedicated personnel, adapting to the extensive operation and maintenance scenarios of pig farms and reducing labor and maintenance costs.
DIEN integrated wastewater treatment equipment
To address the challenge of high ammonia nitrogen wastewater from pig farms in Shaanxi Province, standardized compliance solutions tailored to different farm sizes are available to efficiently resolve wastewater exceeding standards. For small and medium-sized pig farms with moderate wastewater volume and fluctuating water quality, an integrated two-stage A/O treatment process is employed. This process uses solid-liquid separation and a regulating tank to balance water quality. The anaerobic stage decomposes large molecular pollutants, while nitrification and denitrification reactions are completed in stages (anoxic and aerobic), efficiently degrading ammonia nitrogen, COD, and total phosphorus. The treated water is clear and stable, meeting the needs of farmland irrigation, farm reuse, and compliant discharge.
For large-scale pig farms with high wastewater concentration and large discharge volumes, it is recommended to add an MBR (Mechanical Bioreactor) deep treatment module at the end of the biological treatment process. This module uses membrane components to precisely intercept fine impurities and pollutants, further improving denitrification. The effluent indicators are superior to conventional discharge standards, easily meeting stringent environmental inspections. The entire process achieves volume reduction and harmless treatment of manure and wastewater. The treated sludge can be composted for resource utilization, aligning with the concept of green farming.
