wastewater treatment in all factories of paste, canning, fruit juice and beverage

According that in all factories of paste, canning, fruit juice and beverage , have a lot of industrial wastewater, it is mandatory to comply with environmental standards in the discharge of such wastewater. Therefore, it is necessary to use an efficient sewage treatment system with new technologies. Water consumption is extremely high in these industries because of washing empty glasses and machines. Before the wastewater treatment of the paste, canning, juice and soft drinks industries, controlling the water consumption in the production line and also reusing some of the factory effluents before discharging them into the wastewater treatment system is very effective in the deacreasing construction costs for the treatment systems.

In this article, the wastewater treatment method of paste, canning, juice and soft drinks industries are described.

The main sources of waste water production in the paste, canning, juice and soft drink industries:

• Wastewater from the initial agricultural products washing as raw materials for production Overflow of syrups, extracts or their leakage in the cooking process steam
• Wastewater from condensation from cooking and converting products
• Wastewater from the overflow of cooling towers
• Wastewater from washing machines and production halls and packaging containers

Quantity and quality of waste water of paste, canning and juice industries

In the wastewater treatment of paste, canning and fruit juice industries, the quantity and quality of wastewater is very variable and it is not possible to achieve the exact quantity and quality of wastewater through references and simulations with other units that have the same production. The designer’s experience, examination of production lines, factory management and testing on production wastewater will be important factors in determining the quantity and quality of wastewater in the paste, canning, fruit juice, and soft drink industries.

Some materials in the paste, canning and fruit juice industries wastewater:

• Protein
• Starch
• Some simple sugars
• Volatile fatty acids
• Oil in two forms, macromolecule and emulsion
• Profit
• Detergent
• Disinfectants
• Water

Wastewater treatment strategy of juice and beverage industries:

Before the wastewater produced by the factory enters the treatment plant system, water resources management must be done in the process and the pollution load must be controlled from the source. In the design of the wastewater treatment plant for the fruit juice and soft drink industries, the following three general issues, each of which is a necessary and sufficient condition for the other, must be observed:

• Reduction of executive costs according to the performance of the system and the purpose of purification
• Reducing the area occupied by the treatment plant according to the performance of the system and the purpose of the treatment
• Low maintenance cost and ease of management according to the system performance and the purpose of treatment

Wastewater treatment method of paste, canning, juice and beverage industries:

The proposed method of wastewater treatment for paste, canning, juice and beverage can be implemented in the following steps:

Physical and chemical purification

Screening

In order to separate large floating objects and heavy inorganic particles, the garbage collector is used in the physical purification stage.

Fat removal by CPI method

In this method, macromolecule fats become floating and are collected from the system.

Coagulation and flocculent process

Due to the colloidal or chemical nature of some of the compounds in the wastewater, they do not have the ability to settle or separate by gravity and spontaneously. The existing bonds between the particles of these materials and water, which is an important factor in their non-sedimentation and separation from wastewater, should be broken by injecting flocculating materials and chemical polymers, and with the production of flocs or clots, they are settled by gravity and removed from Sewage is separated or neutralized as ineffective compounds.

Biological treatment

Biological wastewater treatment or secondary treatment is defined as a set of biological methods in which the separation of biodegradable organic substances is possible under certain conditions using the activity of microorganisms. In this stage, the goal is to remove carbonaceous organic materials and inorganic pollutants such as phosphorus and nitrogen.

•  Anaerobic treatment by UABR & UAFB method
• Aerobic purification by EAAS & IFAS method

Sedimentation tank

The wastewater from the biological purification aerobic reactor enters this tank and after passing the appropriate retention time and the activated sludge settles on the bottom of the tank, the treated wastewater is discharged through the metal overflows installed on top of the sedimentation tank. The remaining sludge is recirculated to the EAAS reactor.

Excess sludge digester

In some cases of EAAS activity, activated sludge will not be needed, so part of the additional sludge is entered into this system and under the process of digestion and stabilization while reducing the organic matter of the sludge and the number of pathogenic organisms, the sludge is used as fertilizer for It prepares agricultural uses.

Disinfection

The final treated wastewater must be disinfected for discharge into the environment. For this purpose, the wastewater will be disinfected by injecting disinfectants in this pond and then it will be reusable.

This method is planned and implemented in such a way that it completely covers the wastewater treatment strategy of the soft beverage factory and the paste, canning and juice industries. The Pajoohesh Sanat-e-Ab Company (Pasenco) with more than twenty years of successful experience in providing engineering services related to the design, consulting and implementation of industrial wastewater treatment systems along with the full guarantee of obtaining environmental standards, will accompany you in this important matter and tries to Take a small but effective step in protecting this only habitable planet. If you need free expert advice, you can contact our experts through the communication methods mentioned on this page.