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Industry Issues

Characteristics of Food and Beverage Wastewater

High Concentrations of Organic Matter:

Food and beverage production involves significant organic materials such as proteins, fats, and sugars. The wastewater typically contains high concentrations of these organic compounds.

Complex Chemical Composition:

The wastewater may contain various complex chemical components, including residual food additives, preservatives, flavorings, and acidic or alkaline substances.

High Concentrations of Suspended Solids and Fats:

Production processes often generate suspended solids and fats, leading to the presence of these substances in high concentrations in the wastewater.

Temperature and pH Fluctuations:

Fluctuations in temperature and pH during the production process can result in variations in the wastewater's characteristics over different times and production cycles.

Environmental Regulatory Requirements:

The food and beverage industry is subject to stringent environmental regulations, and wastewater discharge must comply with relevant emission standards.

Biodegradable Organic Compounds:

The wastewater contains a substantial amount of easily biodegradable organic compounds, including leftover food and production waste.

Color and Odor Issues:

Food and beverage wastewater may exhibit darker colors and distinctive odors, often associated with the discharge of pigments, flavorings, and aromas.

Seasonal Variability:

Some food and beverage production processes are subject to seasonal variations, causing changes in wastewater characteristics at different times of the year.

High Water Flow Rates:

The food and beverage industry typically consumes significant volumes of water for cleaning, production, and processing, resulting in high wastewater flow rates.

Risk of Microbial Contamination:

Wastewater may carry a risk of microbial contamination, including bacteria, molds, and yeast, necessitating appropriate treatment to prevent adverse environmental impacts.

Based on the characteristics of Food and Beverage wastewater

MBBR Have the Following Advantages

1

High Biodegradation Efficiency

The MBBR process utilizes biofilm attached to suspended media, providing a large surface area conducive to microbial attachment and reproduction. This enhances the biodegradation efficiency of organic compounds, making it an efficient wastewater treatment method.

2

Strong Adaptability

The suspended media in the MBBR reactor provides ample surface area, compacting the required biological active area during the wastewater treatment process, thus improving space utilization efficiency.

3

Flexibility and Scalability

MBBR system designs allow for simple expansion or adjustments as needed to accommodate varying scale and capacity requirements. This flexibility makes it suitable for various scales of food and beverage plants.

4

Low Operational Costs

MBBR processes typically have lower operational costs compared to some traditional wastewater treatment methods. The simplicity of biofilm attachment and regeneration of suspended media reduces maintenance and energy costs.

5

High Shock Load Resistance

MBBR systems exhibit good capabilities in handling shock loads and fluctuations in load, adapting to changes in wastewater flow and quality over short periods.

6

No Regular Aeration Media Replacement

Unlike traditional activated sludge processes, the suspended media in the MBBR process does not require regular replacement, reducing maintenance costs and downtime.

7

Upgradeable on Existing Systems

MBBR processes can be relatively easily integrated into existing wastewater treatment systems, allowing for upgrades to existing plants without the need for extensive reconstruction.

8

Lower Sludge Generation

Compared to some traditional biological treatment processes, MBBR processes generate relatively lower amounts of waste activated sludge, reducing the burden of subsequent sludge handling.

Features

MBBR and Disc Diffuser Must have Performance

In the Food and Beverage process, MBBR and aeration disks are usually key components of the biological treatment system.

MBBR (Moving Bed Biofilm Reactor)

  • High Surface Area:MBBR media should have a high surface area to provide ample attachment surface for microbial growth, enhancing the efficiency of biological degradation.

  • Good Floatability:MBBR media should exhibit good floatability to ensure a well-suspended state in water, promoting effective contact between microorganisms in the wastewater and the media.

  • Corrosion Resistance:Due to potentially corrosive substances in wastewater, MBBR media should be corrosion-resistant to ensure long-term stability and durability.

  • Anti-Biofouling Properties:The surface design of MBBR media should discourage excessive biofouling to prevent the formation of thick biofilms, avoiding clogging and maintaining system efficiency.

  • Ease of Cleaning and Maintenance:Media should be easy to clean and maintain to ensure long-term system performance and biological activity. Periodic cleaning of the media surface can reduce biofilm accumulation.

  • Abrasion Resistance:MBBR media should possess a degree of abrasion resistance to prevent wear and tear from prolonged suspended movement, maintaining the integrity of the media.

  • Appropriate Density and Size:Media density and size should be designed appropriately to ensure an adequate quantity of media in the MBBR reactor, promoting even distribution and enhancing biological load.

Disc diffusers

  • High Gas Transfer Efficiency:The aerator should be designed to efficiently transfer gas into the wastewater, ensuring an ample oxygen supply for microbial biodegradation.

  • Uniform Gas Distribution:Ensuring the aerator can uniformly distribute gas throughout the MBBR reactor prevents dead zones and over-aeration, enhancing the movement of suspended media and promoting uniform aeration of wastewater.

  • Adjustable Gas Volume:The aerator should have adjustable gas volume control capabilities to meet the varying demands of the wastewater treatment system under different loads and conditions.

  • Corrosion Resistance:Due to potentially corrosive substances in wastewater, the construction materials of the aerator should exhibit good corrosion resistance to ensure long-term stability.

  • Abrasion Resistance:Components of the aerator should have a certain level of abrasion resistance to withstand prolonged movement of suspended media and the scouring effect of wastewater, extending its lifespan.

  • Low Energy Consumption:Choose an aerator with a well-designed and energy-efficient configuration to reduce the overall energy consumption of the system.

  • Low Noise Levels:The aerator should operate with low noise levels to minimize disturbance to the surrounding environment.

  • Strong Adaptability:The aerator should demonstrate a certain level of adaptability to maintain stability

Food and Beverage wastewater treatment

Precautions, Water Process and Parameter Table

Precautions for Food and Beverage wastewater treatment

  • Diverse Wastewater Components:Wastewater from the food and beverage industry may contain various organic and inorganic substances such as fats, proteins, sugars, oils, spices, and acidic compounds. Wastewater treatment systems need to handle this diversity.
  • pH Variations:The wastewater generated during food and beverage production may be acidic or alkaline. The treatment system should be adaptable to pH variations and adjust within appropriate ranges.
  • High Concentrations of Organic Matter:Food and beverage wastewater typically contains high concentrations of organic materials such as starch, proteins, and fats. Efficient biological degradation systems are required to handle these organic compounds.
  • Fats and Oils:Food processing can introduce significant amounts of fats and oils into wastewater. Effective separation and removal of fats are crucial steps in wastewater treatment.
  • Control of Nitrogen and Phosphorus:Wastewater may contain nitrogen and phosphorus compounds, such as ammonia nitrogen and phosphates. Controlling the discharge of these nutrients is crucial to prevent water eutrophication.
  • High Temperatures:Food and beverage wastewater is often generated at elevated temperatures. Wastewater treatment systems need to adapt to high-temperature conditions and ensure microbial activity.
  • Sludge Management:Due to the high concentration of organic matter, wastewater treatment processes generate significant amounts of waste activated sludge. Effective sludge management is critical for stable system operation.
  • Process Synergy:Utilize different wastewater treatment processes, such as MBBR, biological filters, sedimentation, etc., in a comprehensive manner to ensure the comprehensive and efficient treatment of diverse wastewater components.

Features of Food and Beverage wastewater process

  • Biological Treatment Processes:Biological treatment processes, such as Moving Bed Biofilm Reactor (MBBR) and biological filters, are effective in degrading organic compounds present in wastewater. They address the complexity of organic substances like fats, proteins, and sugars.
  • Precipitation and Separation:Processes involving precipitation and separation are used to settle suspended solids and remove solid particles from wastewater, enhancing water quality.
  • Physicochemical Treatment:Physicochemical treatment methods, including adsorption and membrane separation, effectively remove colorants, odors, and trace organic compounds from wastewater, improving transparency and taste.
  • Membrane Technologies:Membrane technologies such as ultrafiltration and reverse osmosis efficiently filter wastewater, removing tiny particles and organic matter to achieve higher water quality standards.
  • Air Flotation Process:The air flotation process introduces tiny bubbles into wastewater, causing suspended solids to float and form a froth, facilitating solid-liquid separation. This is particularly useful for removing suspended solids and oils.
  • Odor Treatment:Wastewater from food and beverage processes may generate odors and volatile organic compounds. Odor treatment processes, including activated carbon adsorption and biological filters, effectively reduce odor emissions.
  • Water Recycling:Implementing water recycling processes involves reusing treated water, reducing reliance on natural water resources and promoting sustainable water resource utilization.
  • Energy Recovery:Wastewater treatment processes may incorporate energy recovery methods, such as biogas generation from anaerobic digestion, to enhance overall energy efficiency.
  • Automation Control:The integration of automation control systems enables real-time monitoring and adjustment of wastewater treatment processes, enhancing system stability and treatment efficiency.
  • Modular Design:Adopting a modular design makes wastewater treatment systems more easily expandable and adaptable, accommodating changes in production processes and evolving treatment needs.

Food and Beverage wastewater treatment process

  • Influent and Pretreatment:Screening: The wastewater undergoes screening to remove larger suspended particles, reducing the load on the biofilm reactor.Equalization Tank: Prior to entering the MBBR reactor, an equalization tank may be used for pH and temperature adjustment to create an optimal biological environment.
  • MBBR Biofilm Reactor:Floating Media: The wastewater enters the MBBR reactor containing floating media, such as plastic fillings or other buoyant carriers. These provide ample surface area for microbial attachment and biofilm formation.Aeration System: Within the MBBR reactor, an aeration system supplies oxygen, maintaining movement of the floating media and providing sufficient oxygen for microbial metabolism.Mixing System: Some systems may include a mixing system to keep the floating media in suspension, preventing excessive accumulation.
  • Biological Degradation and Sludge Generation:Organic Matter Degradation: Microorganisms attach to and form biofilm on the floating media, degrading organic compounds in the wastewater, transforming them into more stable byproducts.Sludge Generation: The biological process generates waste activated sludge, containing treated organic matter and microorganisms.
  • Clarification Zone or Post-Treatment:Clarification Tank: Treated water flows through a clarification tank, allowing suspended microorganisms and solid particles to settle, forming a sludge layer.Filtration or Additional Post-Treatment: Optional post-treatment steps, such as filtration or UV disinfection, may be employed to further enhance water quality.
  • Water Quality Monitoring and Adjustment:Water Quality Monitoring: Regular monitoring of key water quality parameters, including suspended solids, dissolved oxygen, ammonia nitrogen, etc.System Adjustment: Based on monitoring results, adjustments to the MBBR system's operational parameters are made to ensure a consistently efficient and stable treatment performance.
  • Sludge Management and Resource Recovery:Sludge Treatment: Processing the generated waste activated sludge, which may include thickening, dewatering, and drying.Resource Recovery: Exploring the resource utilization of waste activated sludge, such as using it as organic fertilizer or utilizing biogas generated through anaerobic fermentation.

Food and Beverage wastewater treatment

Typical Parameter

The following is a parameter table of a typical Food and Beverage wastewater treatment process. The specific values can be adjusted according to the actual situation:
SatgeProcessing unitTypical parametersUnit
Solid-liquid separationSedimentation tankTSS50 - 500 mg/L
Biological treatmentMBBRCOD30 - 200 mg/L
NH3-N2 - 10 mg/L
NO2-N< 1 mg/L
NO3-N< 10 mg/L
TN5 - 30 mg/L
Aeration systemAeration tankDO3 - 8 mg/L
Physical treatmentFilterTSS10 - 50 mg/L
Ammonia nitrogen removalAmmonia nitrogen removal unitNH3-N< 1 mg/L
SterilizeSterilization equipmentSterilant concentration0.5 - 5 mg/L
Water quality monitoringMonitoring equipmentPH6.5 - 8.5
Conductivity500 - 2000 μS/cm
Temperature20 - 30 ℃

For Food and Beverage wastewater treatment

A Unique MBBR Model is Recommended

Based on the characteristics of sewage treatment and the experience of previous cooperative customers, the recommendation is our MBBR64 or MBBR7

MBBR37

Size
Φ25*12mm
Hole Numbers
37
Material
100% White Virgin HDPE
Densilty
0.96-0.98g/cm3
Surface Area
>800m2/m3
Dosing Ratio
15-65%
Membrane-Forming Time
3-15days
Nitrification Efficiency
400-1200gNH N/M3d
BOD, Efficiency
2000-10000g BOD,/M3d
COD5 Efficiency
2000-15000 gCOD/Md
Applicable Temperature
5-60C
Life-Span
>20year

MBBR19

Size
Φ25*12mm
Hole Numbers
19
Material
100% White Virgin HDPE
Densilty
0.96-0.98g/cm3
Surface Area
>650m2/m3
Dosing Ratio
85%
Membrane-Forming Time
15-65%
Nitrification Efficiency
3-15days
BOD, Efficiency
400-1200gNH4 N/M3.d
COD5 Efficiency
2000-10000g BOD/M3d
Applicable Temperature
2000-15000 gCOD5/M3d
Life-Span
5-60C

Food and Beverage wastewater treatment

AquaSust Customer Case

Case 1: Application of MBBR Media in Food Factory Wastewater Treatment


In a large food processing plant in the United States, which produces all kinds of canned food and beverages, a large amount of wastewater containing high organic matter and oil and grease is generated. To effectively treat this wastewater, the plant utilizes MBBR technology. The technology uses Aquasust's MBBR Media as a carrier for the biofilm. The MBBR Media moves freely in the reactor, increasing the opportunity for microorganisms to come into contact with the organic matter in the wastewater.

By using the MBBR system, the plant has a wastewater treatment capacity of 5,000 cubic meters per day. After the system was in operation, the chemical oxygen demand (COD) was reduced from the original 2,500 mg/L to less than 150 mg/L, and the total suspended solids (TSS) was reduced from 500 mg/L to 20 mg/L. This treatment significantly improved the quality of the effluent and met the stringent local environmental discharge standards.

Case 2: Aquasust's Aeration Diffusers in Beverage Plant Wastewater Treatment


A brewery in France, which produces wastewater with high concentrations of organic pollutants and residual yeast, installed Aquasust's aeration diffusers in its activated sludge treatment system. These aeration diffusers effectively increase the dissolution rate of oxygen in the water by generating a large number of fine bubbles, thus promoting the growth and metabolism of microorganisms.

The system has a capacity of 10,000 m3 per day, and with the installation of Aquasust's aeration diffusers, the Biochemical Oxygen Demand (BOD) of the wastewater has been reduced from the original 1,000 mg/L to 30 mg/L, and the Chemical Oxygen Demand (COD) has been reduced from 1,800 mg/L to 100 mg/L. This significant improvement not only improves the efficiency of the treatment but also reduces significantly environmental emissions.

In addition, the plant has realized approximately 20% annual energy cost savings by optimizing the aeration system, while also reducing system maintenance requirements and costs.

Start Your Wastewater Treatment Solution Now

With 20 years of wastewater treatment experience, AquaSust is the trusted expert in biochemical pool solutions. If you have any questions about wastewater treatment, please contact us and we will provide you with the best solution.

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