Alongside the growth of the brewery industry, there are significant environmental concerns such as air pollution, solid waste pollution, and especially wastewater pollution after the production process, with high levels of BOD, COD, TSS, Nitrogen, Phosphorus, and other indicators.

1. Sources of Wastewater Generation

• Brewing and Mashing, Fermentation: Wastewater generated from this process has a very high pollution load, containing many substances such as hydrocarbons, glucose, cellulose, pentoses in husks, starch, hops, protein, vitamins, etc.
• Wastewater from bottle washing, crate washing, filling, and bottling, and beer overflow: The wastewater from this process often has high pollutant levels and a high pH due to multiple washing stages, including hot water washing, cleaning external bottle labels, and spraying with hot alkali.
• Cooling water and condensate: This wastewater is generally cleaner and at a higher temperature than usual, making it reusable.
• Equipment cleaning wastewater: Generated from cleaning production equipment such as fermentation tanks, storage tanks, pipelines, and floor cleaning, this wastewater often contains high levels of disinfectants and cleaning agents.
• Wastewater from daily activities and sanitation of staff.

Table of brewery wastewater composition

 

2. Treatment Technology

Choosing a wastewater treatment system for a brewery depends on several criteria:

• Flow rate, composition, and nature of each type of wastewater.
• Suitability of available land area for construction, whether underground or above ground.
• Estimated costs borne by the investor, operational costs post-treatment.
• Equipment and materials used in the wastewater treatment system.
• Ability of the system to handle increased wastewater volumes if the plant expands.

Below is the AAO technology suitable for brewery wastewater treatment:

Anaerobic (UASB) Tank: This tank uses anaerobic microorganisms to reduce the concentration of BOD and COD in wastewater. The wastewater exiting the UASB tank will be directed to the Anoxic tank.

Anoxic Tank: The purpose of this tank is to convert nitrate to nitrogen gas. Anoxic microorganisms will absorb nutrients and convert nitrate into free nitrogen. The combination of wastewater and recirculation stream enhances the denitrification process. The transformation to N2 occurs as follows:

- Step 1: Convert nitrate to nitrite:      6  + 2CH3OH → 6  + 2CO2 + 4H2O

- Bước 2: Convert nitrite thành N2:      6  + 3CH3OH → 3N2 + 3CO2 + 3H2O + 6OH- + 3O2           

 

Aerobic Tank: In this tank, the reduction of BOD, COD, and the conversion of ammonia to nitrate continues.

Nitrification Process: Ammonia (NH3, NH4+ ) is converted to nitrite (NO2) and then to nitrate (NO3) This process is carried out by two groups of bacteria: Nitrosomonas và Nitrobacter:

* Nitrosomonas bacteria: convert Ammonia to Nitrite. The nitritation stage is the formation of NO2-

NH4+ + 3/2 O2 → NO2- + H2O + 2H+ + energy

* Nitrobacter bacteria: convert Nitrite to Nitrate. The nitratation stage is the formation of NO3-

NO2- + ½ O2 →  NO3- + energy

The BOD in wastewater is treated with the participation of aerobic microorganisms, with BOD removal efficiency reaching 85-90%.

Organic matter + Aerobic microorganisms + O2 → CO2 + H2O + New biomass

 

3. Introduction to BioClean Microbial Products

BIO M5

Key Features:

Contains two specialized microbial strains for nitrification: 

• Nitrosomonas sp (convert Ammonia to Nitrite).
• Nitrobacter sp (convert Nitrite to Nitrate).

Contains bacteria Bacillus Licheniformis, Bacillus Amyloliquefaciens, Bacillus Subtilis, and nitrifying bacteria Nitrobacter winogradskyi, Nitropseudomonas europaea at ten times the density of the old formula.

 

Benefits:

- Reduces ammonia and total nitrogen output in wastewater treatment systems, enhances nitrification and denitrification processes.

- Reduces ammonia odors in the system.

- Resolves microorganism death due to high nitrogen shock loads.

 

BIOCLEAN ACF AD ACTIVATOR

Key Features:

- Enhances anaerobic degradation efficiency in UASB tanks.

- Increases BOD and COD removal efficiency in wastewater.

- Enhances the performance of biogas tanks, septic tanks, and anaerobic systems.

- Reduces H2S and sludge buildup.

- Optimizes the microbial community in anaerobic conditions.

- Broad degradation of complex organic compounds, including facultative anaerobic bacteria.

Applications: phù suitable for anaerobic technologies, biogas tanks, septic tanks, composting, etc.

 
Bioclean ACF 32

Key Features:

- BIOCLEAN ACF 32 (new name), AQUACLEAN ACF 32 (old name) is a liquid formula improved for treating BOD, COD, and TSS, updated in 2020.

- Origin: USA - Manufacturer: Sun & Earth Microbiology.

- Stable performance since 1974.

Applications:

• Industrial wastewater treatment
• Wastewater treatment in the production of beer, beverages, and dairy
• Textile dyeing wastewater treatment
• Rubber wastewater treatment

Advanced formula, ten times more active than conventional microorganisms.

 

ACF AD, ACF 32, BIO M5 are combined for use in anaerobic, anoxic, and aerobic biological systems as an optimal and effective solution to enhance the treatment of BOD, COD, TSS, high total nitrogen treatment, improve water color, control odors, treat cellulose in wastewater, and ensure discharge water meets the allowable discharge standards.

 

4. Where to Buy Genuine, Specialized Bioclean Microbial Products

- The Bioclean – Aquaclean microbial line is trusted and widely used by many treatment operators.

- Officially imported 100% from the USA and exclusively distributed by Biotech Vietnam.

- Biotech Vietnam specializes in products for treating nitrogen, ammonia, sludge, odors, organic oils and greases, septic tanks, etc.

 

In addition to the Environment sector, Biotech Vietnam also offers products for the Aquaculture and Agriculture sectors. For more information, please visit the website: https://www.biotechvietnam.org/

 

BIOTECH VIETNAM

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Hotline: 0914.811.441