MBR Food Processing Wastewater Treatment

MBR Food Processing Wastewater Treatment

Product Overview

The MBR (Membrane Bioreactor) is an innovative wastewater treatment device that combines membrane separation technology with conventional activated sludge process. SUN EURO POLO's MBR systems utilize hollow fiber ultrafiltration membranes or flat sheet membrane modules with pore sizes typically ranging from 0.03 to 0.1 microns, effectively retaining activated sludge, bacteria, viruses, and most organic matter. The system treatment capacity ranges from 10 m³/day to 5,000 m³/day, suitable for various food processing wastewater types including dairy, meat processing, beverages, and grain & oil processing industries. The MBR system produces excellent effluent quality that can be directly reused for production cleaning, landscape irrigation, or discharged to natural water bodies in compliance with regulatory standards.

Working Principle

The MBR membrane bioreactor organically integrates biological degradation and membrane filtration processes within a single reactor. Food processing wastewater first undergoes pre-treatment (including bar screen interception, oil separation settling, and dissolved air flotation) to remove large particulate impurities and oils before entering the MBR reactor. Inside the reactor, high-concentration activated sludge degrades organic pollutants-including proteins, fats, and carbohydrates-through microbial metabolism under aeration conditions. Unlike conventional activated sludge processes, the MBR system does not use secondary clarifiers for solid-liquid separation; instead, it achieves highly efficient separation through the physical filtration action of membrane modules. The membrane modules are immersed in the mixed liquor, and under negative pressure created by suction pumps, treated clean water permeates through the membrane pores while activated sludge is completely retained within the reactor, maintaining extremely high sludge concentrations (typically 8,000 to 15,000 mg/L), far exceeding the 3,000 to 5,000 mg/L of conventional processes. Periodic backwashing and online chemical cleaning restore membrane flux to ensure long-term stable system operation.

Product Features

First, superior effluent quality. The MBR system can consistently produce high-quality effluent with suspended solids approaching zero, COD removal rate exceeding 95%, and BOD5 removal rate exceeding 98%, fully meeting the stringent discharge and reuse standards of the food industry. Second, compact footprint. By eliminating the secondary clarifier and maintaining high sludge concentration, the MBR reactor volume is significantly reduced, with the overall footprint being approximately 40% of conventional processes-particularly suitable for space-constrained food plant environments. Third, reduced excess sludge production. Under high sludge age operating conditions, microorganisms enter the endogenous respiration phase, reducing the sludge yield coefficient and decreasing sludge treatment costs by 30% to 50%. Fourth, extremely high automation. The system is equipped with intelligent control units that automatically adjust aeration intensity, membrane cleaning cycles, and water production, essentially achieving unattended operation. Fifth, strong shock load resistance. The high sludge concentration provides excellent buffering capacity against influent quality fluctuations, suiting the intermittent discharge and variable concentration characteristics of food processing wastewater. Sixth, modular flexible configuration. Membrane module quantities can be flexibly increased or decreased based on food plant capacity and wastewater volume changes, supporting phased investment and capacity upgrades.

Application Scenarios

SUN EURO POLO's MBR systems have been successfully applied in dairy wastewater treatment (processing whey and cleaning wastewater, recovering protein resources), meat processing wastewater treatment (efficiently removing blood, oils, and organic matter), beverage production wastewater treatment (processing syrup and fruit juice cleaning wastewater), grain and oil processing wastewater treatment (treating oily wastewater and plant protein wastewater), and central kitchen and catering distribution center sewage treatment. At a Southeast Asian beverage production enterprise, after installing a 200 m³/day MBR system, the effluent COD stabilized below 30 mg/L, with 60% of treated water reused for workshop floor cleaning and equipment cooling, saving over 40,000 tons of fresh water annually and achieving a win-win of economic and environmental benefits.

Company Strength

With 17 years of deep expertise in the wastewater treatment field, SUN EURO POLO has provided over 500 sets of wastewater treatment equipment to more than 30 countries worldwide, including numerous MBR membrane bioreactor systems. The company holds 15 independent intellectual property patents, with core technical advantages in membrane module optimized design, membrane fouling control, and intelligent cleaning strategies. Our MBR systems have passed CE certification and performance testing by international authoritative bodies, with membrane modules utilizing premium products from internationally renowned brands to ensure long-term stable operation. The production base features extensive facilities including membrane module assembly workshops, control system programming centers, and equipment testing platforms. Every MBR system undergoes 72 hours of continuous operation testing before delivery to ensure performance compliance. With an annual production capacity of 500 sets and a mature supply chain system, we can simultaneously deliver multiple large-scale food industry wastewater treatment projects.

After-Sales Service

SUN EURO POLO provides comprehensive after-sales support for every MBR user. During the initial project phase, our engineering team conducts in-depth on-site surveys at food processing plants to thoroughly understand production processes and drainage characteristics, tailoring the most suitable MBR solution. After equipment delivery, experienced technicians provide on-site guidance for installation, commissioning, and trial operation, ensuring the system achieves designed treatment performance in the shortest possible time. We provide comprehensive technical training for operators covering MBR system fundamentals, daily operation essentials, membrane module maintenance, and common fault diagnosis and resolution. During the warranty period, we commit to free repair or replacement for faults caused by product design or manufacturing defects. After the warranty period, we provide lifetime technical support and favorable spare parts supply. For membrane modules as core components, we offer professional offline cleaning services and membrane life assessment to help customers maximize membrane module service life. Our global service network ensures we can respond to any customer service request in the shortest possible time.

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