Description
High-Rate lamella clarifier for RO Pretreatment – Protecting Membranes from Suspended Solids & Colloidal Fouling
WHAT IS LAMELLA CLARIFIER
Reverse osmosis is a powerful technology, but it has a critical vulnerability: fouling. Suspended solids, colloidal particles, and turbidity in the feed water can quickly degrade RO membrane performance. As the membranes foul, pressure rises, production drops, and cleaning becomes more frequent. Ultimately, membranes are replaced years before their rated life. This costs money, reduces productivity, and increases operating costs.
The DAGYEE High-Rate Lamella Clarifier for RO Pretreatment provides the answer. By efficiently removing suspended solids and colloids before the RO system, it reduces SDI to acceptable levels, protects membranes from fouling, and extends membrane life. This cost-effective solution pays for itself many times over through extended RO membrane life, reduced cleaning frequency, and lower operating costs.
This clarifier is designed for desalination plants, industrial water treatment, municipal RO systems, and any application where reverse osmosis requires high-quality feed water. Compact, reliable, and low-maintenance, it is the ideal pretreatment for protecting your RO investment.
HOW DOES LAMELLA CLARIFIER WORKS
Step 1: Feed Water Intake
Raw water (surface water, groundwater, or pre-treated industrial water) enters the clarifier.
Step 2: Coagulation/Flocculation (Recommended)
For optimum solids removal, a coagulation and flocculation stage is essential. Coagulants neutralize particle charges, and flocculants bind particles into larger, more settleable flocs.
Step 3: High-Rate Lamella Clarification
The flocculated water enters the Lamella Plate pack and flows upward between the inclined plates. The large effective settling area captures flocs and particles, producing high-quality clarified water with significantly reduced SDI and turbidity.
Step 4: Effluent to RO System
The clarified water (with low SDI, low turbidity, and low suspended solids) is directed to the RO feed pumps for further treatment.
Step 5: Sludge Discharge
Settled solids collect in the sludge hopper and are removed periodically for disposal or further treatment.
Technical Specifications-Modle
| Model | Capacities (m³/h) | Piping Connections (mm) | Physical Dimensions (m) | |||||
|---|---|---|---|---|---|---|---|---|
| Inlet | Effluent | Sludge | Backwash | L | W | H | ||
| DCL-005 | 5 | 80 | 80 | 50 | 50 | 2.55 | 1.60 | 2.90 |
| DCL-010 | 10 | 100 | 100 | 50 | 50 | 3.35 | 1.82 | 3.00 |
| DCL-015 | 15 | 100 | 100 | 50 | 50 | 3.35 | 2.02 | 3.00 |
| DCL-020 | 20 | 100 | 100 | 50 | 50 | 3.35 | 2.02 | 3.00 |
| DCL-030 | 30 | 150 | 150 | 50 | 50 | 4.20 | 2.22 | 3.00 |
| DCL-040 | 40 | 150 | 150 | 50 | 50 | 4.00 | 2.80 | 3.00 |
| DCL-050 | 50 | 200 | 200 | 50 | 50 | 4.65 | 2.82 | 3.00 |
| DCL-060 | 60 | 200 | 200 | 50 | 50 | 4.70 | 3.00 | 3.00 |
| DCL-070 | 70 | 250 | 250 | 50 | 50 | 6.40 | 2.60 | 3.00 |
| DCL-080 | 80 | 250 | 250 | 50 | 50 | 6.80 | 2.82 | 3.00 |
| DCL-100 | 100 | 250 | 250 | 50 | 50 | 7.05 | 3.02 | 3.00 |
AVAILABLE DESIGNS KEY
| Feature | Benefit |
|---|---|
| Inclined Plate Arrangement | Settling area many times larger than floor space |
| Optimized Plate Angle | Self-cleaning design—solids slide down by gravity |
| Counter-Current Flow | Enhanced settling efficiency, denser sludge |
| No Moving Parts | Minimal mechanical failure, low maintenance |
| Modular Plate Pack | Easy installation, flexible design |
| Durable Materials | Stainless steel, HDPE, or engineered plastics |
| Integrated Flow Distribution | Even flow distribution across plates |
| Sludge Hopper Collection | Efficient sludge thickening and removal |
What the System Removes
| Contaminant | Removal Efficiency | Notes |
|---|---|---|
| Suspended solids | High | Particles effectively removed |
| Turbidity | To very low levels | Typical clarified water quality |
| Free oils and greases | High | Under standard operating conditions |
| Emulsified oils | Moderate | Without chemical addition |
| Metal hydroxides | High | With proper flocculation |
| Colloidal particles | Moderate to high | With coagulant/flocculant addition |
| Settleable solids | High | Particles with density greater than water |
Lamella Clarifier Application
Seawater Desalination Plants
Pretreatment before SWRO systems. Handles high turbidity, variable feed quality, and high SDI. Extends SWRO membrane life.
Municipal water ro plants
Removes turbidity and colloids from lake, river, and reservoir water. Protects municipal RO membranes.
Industrial RO Systems
Protects RO in manufacturing facilities. For food, beverage, pharmaceutical, and electronics industries.
Power Plant RO Feed
Protects RO membranes in power generation water treatment systems.
Groundwater RO Pretreatment
Removes iron, manganese, and suspended solids before RO.
Wastewater Reuse RO
Clarification before RO for water recycling and reuse projects.
Chemical Processing RO
Removes contaminants before RO for process water production.
Customization Options
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Plate Materials: Choice of stainless steel, polypropylene, PVC, or FRP based on chemical compatibility
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Plate Coatings: Special coatings for specific applications (anti-fouling, anti-static, etc.)
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Inlet Arrangements: Center feed, peripheral feed, or bottom feed configurations
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Sludge Removal Systems: Chain-and-flight scrapers, traveling bridges, or suction systems
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Instrumentation Packages: Level sensors, turbidity meters, sludge density monitors
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Control Systems: Manual, semi-automatic, or fully automated PLC control
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Accessories: Chemical dosing systems, flocculation aids, sampling points
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Special Designs: Circular, rectangular, or square configurations based on space constraints
Installation Options
Full-Flow Installation
The clarifier is installed in the main cooling water return line, treating the entire flow before the water enters the cooling tower or heat exchangers.
Side-Stream Installation
A portion of the circulating cooling water is diverted through the clarifier and returned. This is a cost-effective approach for maintaining overall system cleanliness without treating the entire flow.
Make-Up Water Treatment
The clarifier is installed on the make-up water line to remove suspended solids before they enter the cooling system.
Pre-Filter Installation
The clarifier is installed ahead of heat exchangers or condensers to provide immediate protection against particulate fouling.
Why Choose DAGYEE Lamella Clarifiers
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Proven Design: Hundreds of successful installations worldwide
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Quality Materials: Only premium materials with proper certifications
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Engineering Support: Custom design for specific wastewater characteristics
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Performance Guarantee: Written performance guarantees based on design parameters
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Comprehensive Service: From design to installation, commissioning, and after-sales support
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Cost-Effective Solutions: Competitive pricing without compromising quality
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Technical Innovation: Continuous improvement based on operational feedback
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Global Experience: Applications across diverse industries and regions
Supplier Information
The DAGYEE High-Rate Lamella Clarifier for RO Pretreatment provides reliable, efficient clarification to protect your reverse osmosis investment. By reducing suspended solids, turbidity, and SDI, it extends RO membrane life, reduces operating costs, and improves system performance.
Contact our team for a free consultation and customized system design for your RO pretreatment needs.
