What is effluent, how is it produced in the food sector, and what are its characteristics?
As a by-product of their manufacturing process, most industries generate wastewater, also known as effluent. The effluent/wastewater created varies widely in terms of flow and pollution strength, and it contains a number of contaminants/pollutants that may be eliminated with the assistance of an effluent treatment facility (ETP).
Food processing necessitates a larger use of water in the food sector. The intensity and properties of wastewater released by the food and beverage industry varies.
What are the major contaminants removed in the food industry?
Food industry effluent contains high concentrations of suspended solids, total solids, BOD (Biological Oxygen Demand), COD (Chemical Oxygen Demand), dissolved oxygen, oil and grease, fats, sugar, colour, preservatives, and usually nutrients such as nitrogen, ammonia, and phosphate, among other things.
What is the Work of ETP in Food industry?
ETP for the food sector is designed and integrated with cutting-edge technology, without which water-borne viruses might spread, causing disease and deterioration of receiving water bodies. Because ETP significantly lowers the negative effects of effluents on aquatic ecosystems and humans, effluent treatment plants have shown to be a viable option for effluent treatment applications.
Effluent treatment plants (ETPs) for food industries/food processing industries are the most effective techniques to combat water pollution. Its primary goal is to create a product that may be safely released into a watercourse or sewer while adhering to the specified discharge limitations.
ETP's Importance in the Food and Beverage Industry
- Practical and efficient
- It is simple to use
- More efficient observance of the law
- Improves the industry's image
- Self-sufficient systems
Different treatment procedures and effluent treatment plant (ETP) levels
Here are the thr?ee wastewater treatment technologies utilized in ETP for the food sector to mitigate the possible environmental effect-
1. Physical Treatment Techniques
2. Chemical Treatment Techniques
3. Biological Treatment Techniques
In general, ETPs go through four (4) therapy stages, such as
1: Preliminary treatment level:Preliminary treatment operations typically include coarse screening, grit removal and, in some cases, breaking of large objects into the smaller objects.
2:Primary treatment level: Its objective is removal of large solids from the wastewater via physical settling or filtration. During primary sedimentation, oil and grease, organic nitrogen, organic phosphorus, and heavy metals linked with solids are also removed.
3: Secondary treatment level:This treatment level's primary goal is to remove suspended particles and residual organic waste, which can be accomplished using aerobic and anaerobic processes. The activated sludge technique is the most often used secondary treatment method. It consists of an aeration tank in which oxygen is provided to microorganisms, resulting in the removal of biodegradable dissolved and colloidal organic waste.
4: Tertiary treatment level:The goal of this treatment stage is to enhance the effluent quality even more before it is released into the receiving environment. It uses a disinfection technique (chlorine, UV light, and ozone) that leaves no hazardous residues.
The following is a flow chart of the Effluent Treatment Plant (ETP) process in food industry-
Physico-chemical and biological processes are used in the process design. The treatment method will be chosen based on the final properties of the treated water.
Flow Chart of Physico-chemical Processes
Screening
↓
Skimming (removal of oil and Grease)
↓
Equalization
↓
Maintenance of pH (Chemical Dosing)
↓
Primary and Secondary Clarifiers (Solid Liquid Separation)
↓
Chlorination System
↓
Activated Gravity Separator
↓
Activated Carbon Filter
↓
Multi-Grade Filter (Reverse Osmosis)
↓
Sludge Management System
OR
Another Flow Chart for Food Industry effluent
Screening
↓
Oil and Grease Tap
↓
Equalization
↓
Maintenance of pH (Chemical Dosing)
↓
Primary and Secondary Clarifiers (Solid Liquid Separation)
↓
Anaerobic Treatment (Fixed Film, Feed Tank, Plastic Media)
↓
Sludge Management System
Standard Parameters of treated effluent in Food Sector
S.No |
Parameters |
Standard norms |
Inland surface water |
Land for irrigation |
1 |
pH |
6.5 to 8.5 |
5.5 to 9.0 |
5.5 to 9.0 |
2 |
Total solids |
< 2000 |
– – – |
– – – |
3 |
Suspended solids |
< 300 |
< 100 |
< 200 |
4 |
Chemical oxygen demand (COD) |
< 250 |
< 250 |
– – – |
5 |
Biological oxygen demand (BOD) |
< 100 |
< 30 |
< 100 |
6 |
Oil &grease |
< 10 |
< 10 |
< 10 |
Select a firm with appropriate experience in this industry!
It is critical to select a business with suitable experience in this sort of job and sector.To pitch better offers, the buyer should always conduct thorough research and haggle the price of the service.
What can we offer?
Netsol Water is a significant water and wastewater treatment firm in India, offering WTP, WWTP, STP, ETP, RO Plant, ZLD Plant, and MBR manufacture, among other services. The company creates equipment’s and is committed to providing practical solutions that help businesses flourish. We are committed to providing our valued customers with hands-on service, expert counselling, and training.
Netsol Water is Greater Noida-based leading water & wastewater treatment plant manufacturer. We are industry's most demanding company based on client review and work quality. We are known as best commercial RO plant manufacturers, industrial RO plant manufacturer, sewage treatment plant manufacturer, Water Softener Plant Manufacturers and effluent treatment plant manufacturers. Apart from this 24x7 customer support is our USP. Call on +91-9650608473, or write us at enquiry@netsolwater.com for any support, inquiry or product-purchase related query.