Slaughterhouses and meat processing enterprises across Shaanxi Province generate large amounts of high-concentration organic wastewater during their production processes. This wastewater contains significant amounts of animal fat, blood, meat scraps, hair, and suspended solids, characterized by high fat content, high COD concentration, large fluctuations in water quality, and easy decomposition and foul odor. It is recognized in the industry as a difficult type of wastewater to treat. Many slaughterhouses in Shaanxi face a common problem: ordinary wastewater treatment equipment has weak oil removal capabilities, and grease-coated sludge paralyzes the biological treatment system, resulting in effluent exceeding standards and failing environmental impact assessments. To completely solve the problem of high grease levels in meat processing wastewater, it is necessary to select Shaanxi slaughterhouse wastewater treatment equipment adapted to local conditions and adopt a professional oil-water separation + biological treatment combination process to consistently achieve wastewater discharge that meets standards.
DIEN Wastewater Treatment Equipment Manufacturer
The core issue that makes it difficult for meat processing wastewater to meet standards lies in grease contamination. The grease in slaughterhouse wastewater is divided into floating oil, emulsified oil, and dissolved oil. Ordinary sedimentation and filtration equipment can only remove surface floating oil and cannot treat emulsified oil in the water. When large amounts of grease enter the biological treatment tank, they coat the microorganisms and sludge, blocking oxygen contact, causing bacterial death, system paralysis, and problems such as blackened wastewater, severe odor, excessive COD, and excessive suspended solids. Especially in Shaanxi Province, where environmental regulations are strict and slaughterhouse discharge standards are stringent, failure to meet effluent standards can easily lead to production shutdowns, fines, and other issues, directly impacting normal business operations.
The core pretreatment stage utilizes a high-efficiency dissolved air flotation (DAF) system, a crucial step in oil removal. By releasing microbubbles to adsorb emulsified grease, colloidal impurities, and fine suspended solids in the water, combined with PAC and PAM flocculants, the difficult-to-settle emulsified grease is quickly floated to the surface and scraped off. The grease removal rate can reach over 95%, significantly reducing wastewater COD and pollution load, completely preventing grease from entering the biological treatment system and causing equipment paralysis, thus creating stable water quality conditions for subsequent biological treatment.
DIEN Wastewater Treatment Equipment Manufacturer
The wastewater after oil removal pretreatment enters the integrated biological treatment unit. The equipment employs mature A/O and A²/O biochemical processes, effectively degrading core pollutants such as organic matter, ammonia nitrogen, and total phosphorus in the water through anaerobic and aerobic staged treatment, decomposing residual organic impurities, and solving the problem of black and smelly wastewater. Targeting the characteristics of small-scale slaughterhouses in Shaanxi with low output and intermittent production, the equipment can intelligently start and stop, adapt to fluctuations in water quality and quantity, and has strong shock resistance, avoiding water quality fluctuations exceeding standards due to production stoppages and restarts.
The Shaanxi slaughterhouse wastewater treatment equipment adopts an integrated design, occupying little space, easy to install, and operating fully automatically without dedicated personnel, making it ideal for slaughterhouses with limited space and labor shortages. The main body of the equipment is made of corrosion-resistant materials, resistant to wastewater corrosion and aging, and adaptable to the large temperature difference between day and night in Northwest China. It operates stably with a low failure rate and low maintenance costs. The entire process strictly complies with local slaughterhouse wastewater discharge standards, resulting in clear and stable treated water that can be directly discharged in compliance with standards. It can also be used for factory floor washing and greening reuse, achieving energy conservation, environmental protection, cost reduction, and efficiency improvement.
