50 m3/day A²/O Wastewater Treatment System For A Meat Processing Plant In Henan
Motiva designed and manufactured an integrated A²/O wastewater treatment system for production wastewater from a meat processing plant in Henan. The main treatment stages are screening and equalization, anaerobic, anoxic and oxic biological zones, secondary sedimentation and disinfection.
Integrated treatment unit prepared for transport
The completed enclosed system is shown outside the factory on a low-bed trailer.
50 m3/day
Henan
A²/O
Meat Processing
What Was Manufactured For The Project
The Henan project combines influent buffering, three biological treatment environments, solids separation, disinfection and intelligent controls in a factory-prepared integrated equipment form.
Project At A Glance
| Location | Henan Province, China |
|---|---|
| Industry | Meat processing |
| Wastewater source | Production wastewater from a meat processing plant |
| Stated capacity | 50 m3/day |
| Main process | A²/O: Anaerobic–Anoxic–Oxic biological treatment |
| Wastewater design concerns | Organic matter, fats, proteins and suspended solids |
| Pretreatment | Coarse screening and equalization |
| Final stages | Secondary sedimentation and disinfection |
| Control approach | Automated control and monitoring functions |
| Project stage | Integrated equipment manufactured and prepared for delivery |
Data Required For A Comparable System
For a comparable meat-processing wastewater project, final process configuration and equipment sizing depend on:
Why This Project Uses An A²/O Route
The project combines three biological environments to coordinate organic removal with nitrogen and phosphorus transformation while equalization protects the downstream biology from production variability. For a new plant, A²/O selection is checked against BOD₅/COD biodegradability, ammonia and TN, TP, oil and grease, peak loading and outlet limits.
Organic-Rich Wastewater
Meat-processing wastewater can contain biodegradable organics, fats, proteins and suspended solids. Screening and load balancing reduce avoidable stress before biological treatment.
Nutrient-Removal Logic
Anaerobic, anoxic and oxic environments create the operating conditions required for carbon removal, denitrification and biological phosphorus transformations.
Variable Production Conditions
Equalization buffers changes in flow and wastewater strength so aeration, biological loading and downstream clarification can be controlled more consistently.
Integrated Equipment Built Around The Treatment Route
The system brings the A²/O route, downstream treatment and controls into a transportable factory-prepared equipment package.
Enclosed Integrated Assembly
The project photographs show a full-size enclosed treatment unit prepared in the workshop and positioned on a transport trailer.
Anaerobic, Anoxic And Oxic Zoning
The three biological environments divide the process duties needed for organic degradation and nutrient transformation.
Clarification And Disinfection
Secondary sedimentation separates biological solids before the selected disinfection stage addresses the required microbial outlet target.
Automated Control And Monitoring
Automated control and monitoring functions support routine operation and equipment-status review for the integrated system.
Full-Size Integrated System Prepared For Transport
The second project photograph shows the enclosed treatment body, downstream equipment compartment and factory-stage transport preparation.
Factory-Prepared Integrated Treatment Unit
The workshop view establishes the physical scale and delivery form of the equipment used for the Henan meat-processing project.
Main Treatment Stages In The 50 m3/day A²/O System
Each stage has a distinct duty. Together they manage coarse solids, flow variation, biodegradable organics, nitrogen, phosphorus, biological solids and final disinfection.
| Treatment Area | Project Configuration | Engineering Role |
|---|---|---|
| Influent Management | Coarse screens and equalization tanks | Screens remove large solids. Equalization buffers changes in hydraulic flow and pollutant loading before biological treatment. |
| Anaerobic Zone | Anaerobic biological zone | Provides conditions without dissolved oxygen or nitrate for biological phosphorus release and carbon storage before the downstream anoxic and oxic stages. |
| Anoxic Zone | Anoxic denitrification stage | Denitrifying bacteria use available carbon under oxygen-limited conditions to convert nitrate nitrogen into nitrogen gas. |
| Oxic Zone | Aerobic biological treatment | Supports oxidation of remaining biodegradable organics, nitrification and biological phosphorus uptake under controlled aeration. |
| Final Treatment | Secondary sedimentation and disinfection | Clarification separates biological solids; disinfection is selected to match the applicable microbial outlet requirement. |
Typical A²/O hydraulic design: nitrified mixed liquor normally returns from the oxic zone to the anoxic zone, while return activated sludge moves from secondary clarification to the biological head. The final return points and recycle ratios depend on nitrogen targets, available carbon, sludge behavior and the project PFD.
Pretreatment for meat-processing wastewater: coarse screening and equalization precede the biological stages in this project configuration. Oil and grease, suspended solids and organic loading determine whether a new plant also requires oil separation, primary solids removal or DAF pretreatment.
Equipment Prepared For The Henan Project
The real workshop and outdoor photographs show the integrated 50 m3/day treatment unit positioned for transport after factory preparation.
Connect This Project To Your Treatment Requirements
Use the project as a starting reference, then compare the industry route, equipment form and pretreatment choices that fit your actual wastewater.
Food And Meat Processing Wastewater
Review pollutant profiles, treatment-route choices and design inputs for food, beverage and meat-processing wastewater.
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Review DAF PretreatmentProject Design And Equipment Configuration
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Prepare Design InputsAnswers For Buyers Planning A Similar System
Capacity, pretreatment and biological design must be checked against the new plant’s wastewater characteristics and outlet limits.
What capacity and process were used for the Henan meat-processing project?
The project uses a stated capacity of 50 m3/day and an A²/O biological route consisting of anaerobic, anoxic and oxic treatment zones.
Which wastewater characteristics matter most in a meat-processing plant?
Organic matter, fats, proteins and suspended solids are important design concerns. Nitrogen, phosphorus, pH, temperature, cleaning chemicals, daily production schedules and peak flow should also be measured for a new project.
What are the main treatment stages in this A²/O system?
The main liquid-line stages are coarse screening and equalization, followed by anaerobic, anoxic and oxic biological treatment, secondary sedimentation and disinfection. Typical A²/O hydraulic design also includes nitrified mixed-liquor recycle and return activated sludge; the final arrangement is set in the project PFD.
Why is equalization important before A²/O treatment?
Production and cleaning cycles can change both flow and wastewater strength. Equalization reduces short-term shocks and gives the biological stages a more manageable hydraulic and organic load.
Is DAF pretreatment always required before A²/O?
No. Coarse screening and equalization precede the biological stages in this project configuration. DAF may be evaluated for another plant when oil, grease, suspended solids or chemically conditioned flocs require stronger separation before biological treatment.
What data should be submitted for a similar project?
Send wastewater source, average and peak flow, composite water analysis, production and cleaning schedule, oil and grease, COD, BOD, suspended solids, ammonia, TN, TP, pH, outlet limits, site layout, utilities and required supply scope.
Request A Project-Specific Equipment Review
Send the plant process, average and peak flow, wastewater variation, outlet target and site constraints through the Motiva RFQ / Water Data Form.
Motiva RFQ / Water Data Form
Water-quality reports, site layouts, production schedules and project photographs can be included with the inquiry.