The food and beverage processing industry generates some of the most challenging wastewater streams in the industrial sector. With extremely high concentrations of organic matter (BOD and COD), fats, oils, and grease (FOG), and fluctuating flow rates tied to production schedules and seasonal demand, these facilities require robust, purpose-built treatment systems to meet increasingly strict environmental discharge regulations.
From dairy processing and meat slaughterhouses to breweries, bakeries, and fruit juice plants, each sub-sector produces wastewater with unique characteristics. Common pollutants include suspended solids from food particles, dissolved sugars and proteins that drive biological oxygen demand, and emulsified fats that resist conventional separation.
At Zhongsheng Environmental, we have extensive experience designing and manufacturing complete wastewater treatment systems specifically tailored for the food and beverage industry. Our solutions combine physical, chemical, and biological treatment processes to deliver reliable, cost-effective results that meet local and international discharge standards.
High BOD/COD Levels: Organic waste from food processing creates extremely high biological and chemical oxygen demand, often exceeding 10,000 mg/L, requiring intensive biological treatment.
Fats, Oils & Grease (FOG): FOG contamination from cooking and processing operations can clog pipes, foul membranes, and inhibit biological treatment if not properly removed upstream.
Seasonal Flow Variations: Production volumes fluctuate dramatically with seasons and market demand, requiring treatment systems that handle widely varying flow rates and pollutant loads.
Strict Discharge Regulations: Environmental authorities worldwide are tightening discharge limits. Non-compliance can result in heavy fines, production shutdowns, and reputational damage.
A proven multi-stage approach to food processing wastewater treatment
Mechanical bar screens and fine screens remove coarse solids, food particles, and debris. This critical first step protects downstream equipment and reduces overall pollutant load.
Our high-efficiency DAF units remove FOG and suspended solids through micro-bubble flotation. Typically removes 90–95% of FOG and 85–95% of TSS.
MBR systems combine activated sludge with membrane filtration for superior effluent quality in a compact footprint. BOD/COD removal rates exceed 95%.
Ultrafiltration membranes and disinfection polish effluent to near-potable quality. Treated water can be reused for cleaning, cooling, or irrigation.
Purpose-built wastewater treatment equipment for the food industry
ZSQ series dissolved air flotation (DAF) system for high-efficiency removal of suspended solids, FOG, oil & grease, and colloidal matter from industrial wastewater. Micro-bubble technology with automatic skimming handles 4–300 m³/h across 13 standard models. Proven in food processing, pulp & paper, textile, metalworking, petrochemical, and municipal pre-treatment applications.
Integrated MBR membrane bioreactor system combining activated sludge treatment with submerged PVDF membrane filtration. Delivers near-reuse-quality effluent (<1 μm filtration) with 60% smaller footprint than conventional systems. Ideal for municipal sewage, industrial process water, and water reuse projects from 10 to 2,000 m³/day.
Zhongsheng Environmental automatic chemical dosing systems provide precise, PLC-controlled injection of coagulants, flocculants, pH adjusters, and specialty chemicals for water and wastewater treatment. Skid-mounted, pre-wired, and factory-tested for rapid installation.
Zhongsheng Environmental plate and frame filter presses deliver efficient solid-liquid separation for municipal and industrial sludge dewatering, with filtration areas from 1 m² to 500 m² and manual, hydraulic, or fully automatic PLC-controlled operation.
Zhongsheng Environmental high-efficiency sedimentation tanks (lamella clarifiers) combine sludge recirculation, flocculation, and inclined-plate separation in a single compact structure — achieving surface loading rates of 20–40 m/h while reducing chemical consumption by up to 30%.
The GX Series Rotary Mechanical Bar Screen is a continuous-duty fine screening system for municipal and industrial wastewater headworks. Featuring stainless steel rake teeth, dual overload protection, and a self-cleaning brush discharge mechanism, it reliably removes suspended solids, rags, plastics, and fibrous debris — protecting downstream pumps, valves, and biological treatment processes.
Our engineers will analyze your wastewater data and design a treatment system tailored to your specific requirements. Get a free consultation today.
