Comprehensive wastewater treatment solutions for food manufacturing facilities handling high organic loads.
Dairy wastewater treatment BOD solutions for cheese production effluent and milk processing wastewater.
FOG removal food industry DAF systems for fat oil grease recovery food processing.
CIP wastewater Neutralisation pH systems for food and beverage factories.
Anaerobic treatment for food processing COD reduction using UASB reactors and biogas recovery.
Specialised Solutions for Food Manufacturing
Food processing wastewater presents unique challenges due to high concentrations of organic matter, suspended solids, oils, and nutrients. Our comprehensive treatment solutions are engineered to handle these demanding effluents while ensuring regulatory compliance and operational efficiency. High and variable fats, solids and nutrient loads mean balancing, flotation and biological treatment are usually the backbone of the plant. We tailor each train to the specific food stream so it holds consent reliably while keeping operating costs and footprint in check.
Food processing generates wastewater with elevated BOD and COD levels from organic residues, requiring specialised biological and chemical conditioning and treatment processes.
Explore High Organic LoadsEffective separation and removal of fats, oils, and grease (FOG) through advanced DAF systems and coagulation/flocculation processes.
Oil & Grease RemovalReynolds & Bauhm systems enable water recycling opportunities, reducing freshwater consumption and environmental impact while lowering operational costs.
Explore Water Reuse PotentialMeet discharge limits for BOD, COD, TSS, nitrogen, and phosphorus with treatment systems engineered for local environmental regulations.
Explore Regulatory ComplianceFood Industry Sectors We Serve
Wastewater treatment for facilities producing prepared meals, salads, and convenience foods with high organic content and variable flow rates.
Specialised solutions for juice processing, soft drink manufacturing, and bottling facilities handling sugar-rich effluents.
Beverage & BreweryTreatment systems for potato chip, corn snack, and baked goods manufacturing with high starch and oil content.
Snack ProducerSolutions for fruit and vegetable canning operations dealing with seasonal production variations and high solid loads.
Wastewater management for bakeries and confectionery producers with flour, sugar, and fat-laden effluents.
ConfectioneryAdvanced treatment for vegetable oil processing facilities with high lipid content and emulsified oils.
Food processing effluent varies dramatically by product type. Accurate characterisation is essential for sizing equipment and selecting the right Treatment Process.
| Sub-Sector | BOD (mg/l) | COD (mg/l) | FOG (mg/l) | TSS (mg/l) | pH | Typical Flow (m³/day) |
|---|---|---|---|---|---|---|
| Dairy & Cheese | 1,500 – 5,000 | 3,000 – 10,000 | 150 – 800 | 200 – 1,500 | 6.0 – 9.5 | 50 – 800 |
| Red Meat & Abattoir | 2,000 – 8,000 | 4,000 – 15,000 | 300 – 2,500 | 500 – 3,000 | 6.5 – 8.0 | 100 – 1,500 |
| Poultry Processing | 1,500 – 6,000 | 3,500 – 12,000 | 200 – 1,500 | 400 – 2,500 | 6.5 – 7.5 | 80 – 1,000 |
| Ready Meals & Prepared Foods | 800 – 3,500 | 1,500 – 6,000 | 100 – 600 | 150 – 800 | 5.5 – 8.5 | 30 – 500 |
| Bakery & Confectionery | 500 – 2,500 | 1,000 – 4,500 | 50 – 400 | 100 – 600 | 5.0 – 8.0 | 20 – 300 |
| Beverage & Soft Drinks | 300 – 2,000 | 600 – 3,500 | 10 – 100 | 50 – 400 | 3.5 – 8.0 | 100 – 2,000 |
| Edible Oils & Fats | 1,000 – 4,000 | 2,000 – 8,000 | 500 – 5,000 | 200 – 1,000 | 5.0 – 7.5 | 40 – 400 |
| Vegetable Processing | 300 – 1,500 | 600 – 2,500 | 20 – 150 | 100 – 600 | 6.0 – 8.5 | 50 – 600 |
| Seafood Processing | 800 – 3,000 | 1,500 – 5,500 | 50 – 300 | 150 – 800 | 6.5 – 8.0 | 30 – 400 |
| CIP & Sanitiser Wastewater | 200 – 1,000 | 400 – 2,000 | 10 – 80 | 50 – 300 | 2.0 – 12.0 | 10 – 150 |
Values represent typical ranges; site-specific characterisation via composite sampling is recommended for design.
The optimal Treatment Process depends on influent BOD/COD strength, FOG loading, and required discharge standard. Below are three proven configurations scaled to organic load.
BOD < 1,500 mg/l — Bakery, beverage, vegetable washing
Typical Capital expenditure:
BOD 1,500 – 5,000 mg/l — Dairy, ready meals, seafood
Typical Capital expenditure:
BOD > 5,000 mg/l — Red meat, edible oils, rendering
Typical Capital expenditure:
Food manufacturers in the UK discharge to sewer under trade effluent consents or to watercourses under Environmental Permitting Regulations. Reynolds & Bauhm systems are designed to meet or exceed these limits consistently.
Typical consent conditions imposed by UK water companies for food processing discharge to sewer:
Note: Local limits vary by Water Company and treatment works capacity. Consent negotiation is often possible with pre-treatment.
Environment Agency discharge limits under EPR for food processing effluent to controlled waters:
Sensitive catchments may require tighter nutrient limits. EA permits typically include monitoring and reporting obligations.
Our automated systems include compliance monitoring as standard:
Multi-Stage Approach
DAF flotation and sedimentation to remove suspended solids, oils, and grease.
Research: Microbubble PhysicsProducts for Food Processing Applications
Bar screens, spiral sieves, and drum screens for removing food particles and protecting downstream equipment.
Superior removal of oils, grease, and suspended solids from food processing wastewater.
High-efficiency inclined plate clarifiers saving 90% surface area vs conventional tanks.
MBBR and SBR systems for reducing BOD and COD from high organic food processing effluents.
Multi-disc presses and screw presses for efficient sludge volume reduction and disposal requirement benefits.
Automated polymer preparation systems for optimal flocculation and solids separation.
Pressure and multimedia filters for final polishing to remove residual suspended solids.
Rapid deployment containerised DAF systems for quick implementation without civil works.
Quick-estimate tools for treatment selection, biogas potential, and FOG recovery feasibility. For detailed design, contact our engineers.
Detailed engineering guides with contaminant profiles, process designs, and example proposals for specific food wastewater applications.
High-BOD effluent from milk, cheese, and yogurt production. Whey recovery, lactose biodegradation, and biogas potential.
Read GuideHigh-COD applications with biogas recovery. UASB, EGSB, and IC reactor design with CHP feasibility.
Read GuideFats, oils, and grease removal with recovery value. Chemical dosing optimisation and rendering output calculations.
Read GuideAbattoir and cutting plant effluent. Blood, protein, and fat separation with ABPR compliance.
Read GuideClean-in-place effluent with extreme pH variation. Neutralisation, recovery, and reuse strategies.
Read GuideDiscuss your specific requirements with our technical team and receive a tailored proposal for your project.
Contact UsExplore Other Industries We Serve
Specialised wastewater treatment for poultry facilities with high-protein effluents.
Poultry Processing SolutionsRobust treatment solutions for slaughterhouse and meat processing operations.
Meat Processing SolutionsWastewater treatment for dairy and cheese production facilities.
Dairy Industry SolutionsWater treatment for breweries, juice processing, and beverage production.
Brewery & Beverage SolutionsDiscuss your specific requirements with our technical team and receive a tailored proposal for your project.
Contact UsWhy Choose Reynolds & Bauhm
Food processing wastewater treatment requires robust process tanks.
Flow and load equalisation to manage variable effluent from batch operations.
View Equalization TankspH correction vessels for acidic or alkaline cleaning effluent.
View Neutralisation TanksAcross dairy, meat, brewery, bakery, and produce processing, four chemistries dominate.
Starches (bakery, potato), sugars (confectionery, soft drinks), lactose (dairy), maltose (brewery). Highly biodegradable, BOD:COD ratio 0.55–0.75. Rapid VFA production in unbuffered reactors causes pH drops.
Vegetable oils (extraction, frying), animal fats (meat / dairy), waxes (fruit). Free FOG removable by gravity; emulsified FOG requires DAF + chemical demulsification.
Casein (dairy), albumin (egg, meat), globulin (meat blood), gluten (bakery). Forms emulsions with FOG. Charge-neutralisation coagulation (ferric or cationic polymer) recovers as floc.
Alkaline phase (NaOH 1–3% at 70–80°C) dissolves protein/fat; acid phase (HNO₃ / H₃PO₄ 0.5–1.5%) removes mineral scale. Sanitisers (NaOCl, peracetic acid) follow. Each phase has distinct pH and BOD profile — see CIP wastewater management.
Alkaline CIP returns + acidic rinses + lactic / acetic acid fermentation create extreme pH swings (pH 2–13). Equalisation + 2-stage cascade pH control. See food & beverage pH, control strategy and the parallel oil-gas pH reference.
Modern plants recover whey protein, fat (rendering), starch (re-cooking) and biogas before treating residual streams. Recovery feasibility typically >30% of Operating expenditure offset.
High-BOD food effluent suits aerated-lagoon treatment with efficient oxygen transfer.
Contact our experts to design a customised treatment solution for your facility.
Estimate organic loading rate, oxygen demand, and reactor volume from influent BOD/COD and design flow. Useful for early-stage biological reactor sizing.
Open CalculatorCalculate caustic or acid dosing requirements for CIP and process effluent neutralisation, including buffering capacity from carbonate and phosphate species.
Open CalculatorOur expertise spans multiple industries with sector-specific water treatment solutions.