Ultrafiltration (UF) for Wastewater Treatment
Ultrafiltration (UF) is a highly effective method for treating wastewater. It involves forcing water through a semi-permeable membrane with tiny pores. These pores are small enough to capture suspended solids, bacteria, and other contaminants, while allowing water molecules to pass through.
How UF Works in Wastewater Treatment
- Separation: Wastewater is pumped into the UF system. The membrane retains suspended solids, organic matter, and microorganisms, while the filtered water (permeate) passes through.
- Concentration: The retained solids, called concentrate, are continuously removed to prevent membrane fouling.
- Filtration: The permeate, which is now free of suspended solids, can be further treated using other methods like reverse osmosis (RO) for higher purity.
Advantages of UF for Wastewater Treatment
- High removal efficiency: Effectively removes suspended solids, turbidity, bacteria, and viruses.
- Consistent effluent quality: Produces high-quality water suitable for reuse or discharge.
- Compact footprint: Requires less space compared to traditional treatment methods.
- Low chemical usage: Reduces reliance on chemicals for treatment.
- Energy efficient: Lower energy consumption compared to other membrane processes.
Applications of UF in Wastewater Treatment
- Municipal wastewater treatment: Removing suspended solids and improving effluent quality before discharge.
- Industrial wastewater treatment: Treating wastewater from various industries like food processing, pharmaceuticals, and chemical manufacturing.
- Water reuse: Producing high-quality water for irrigation, industrial processes, or potable water production.
RO Plant for Waste Water
We have been emerging as the leading manufacturer and supplier of Industrial and Commercial RO plants in India to purify the water to a great extent. Tons of water gets wasted during an industrial process and commercial keeping, which needs to be filtered to make it reusable and recyclable. RO or Reverse Osmosis is the best hyperfiltration technique which clarifies the brackish water by removing the salt, fluids, discharge, dissolvable solvents, dyes, bacteria and other harmful constituents. Our RO plants make sure that the natural nutrients are adequate to maintain the health level of water. We design customized solutions which are suitable for marine applications to purify a large amount of water at once with high-performance capacity. Not only the industrial and manufacturing units, but also municipalities can be facilitated with the customized RO plants. We are aiming to serve the whole India with the clean and reusable water. The government is taking initiative towards water treatments. Allied is moving together with the government to raise the water quality so as to make it approachable for the future generation.
Features of Allied's RO Plant
- Provides pure, clean and mineral water which is free from bacteria, viruses & impurities.
- Fully automatic system.
- No chemicals are being used which could be harmful for health.
- Tasty water by removing TDS or extra salt from the raw water.
- Easy, Quick and durable installation.
- Faster and timely operation and services.
- Well integrated system.
- Material of construction is PVC/SS.
- Only approved tested parts and items are used.
- Compact and modular RO blocks.
- Required pipe length to reduce system resistance.
Applications
- Feed Water for Boiler
- Drinking Water
- Cooking water
- Beverage Production
- For Machineries
- Food Processing
- Pharmaceuticals
- Many More
Zero Liquid Discharge (ZLD)
Zero Liquid Discharge (ZLD) is an advanced wastewater treatment process that aims to eliminate liquid effluents from industrial processes. This is achieved by recovering and reusing water, while converting the remaining contaminants into solid waste.
Role of MEE, MVR, and ATFD
- Multi-Effect Evaporator (MEE): This technology utilizes multiple stages to efficiently evaporate water from the wastewater. Heat from the vapor produced in one stage is used to heat the feed in the next stage, significantly reducing energy consumption.
- Mechanical Vapor Recompressor (MVR): MVR is a highly energy-efficient process that compresses the vapor produced in the evaporation process to increase its temperature. This compressed vapor is then used to heat the incoming wastewater, further reducing energy requirements.
- Agitated Thin Film Dryer (ATFD): This technology is used to dry the concentrated brine produced in the evaporation stages, converting it into a solid form.
ZLD Process Flow
A typical ZLD system using MEE, MVR, and ATFD involves the following steps:
- Pre-treatment: Wastewater undergoes preliminary treatment to remove suspended solids and other contaminants.
- Reverse Osmosis (RO): A significant portion of the water is recovered through RO, producing a concentrated brine.
- Evaporation: The brine is fed into the MEE and MVR system to evaporate water, resulting in a highly concentrated solution.
- Crystallization: The concentrated solution is further processed in a crystallizer to form solid salts.
- Drying: The solid salts are dried using an ATFD to produce a dry, solid product.
Benefits of ZLD
- Water conservation: Maximizes water reuse and reduces dependence on fresh water sources.
- Environmental protection: Prevents water pollution and minimizes the discharge of harmful substances.
- Resource recovery: Enables recovery of valuable minerals and salts from wastewater.
- Compliance: Helps industries meet stringent environmental regulations.
Condensate Polishing Unit (CPU)
A Condensate Polishing Unit (CPU) is specifically designed for treating condensate - the water formed when steam cools down. It's primarily used in power plants and industrial processes to remove impurities from condensate before it's reused as boiler feedwater.
