DAGYEE Compact Polymer Batching System – Space-Saving Chemical Preparation for Small to Medium Treatment Plants

Description

DAGYEE Complete Polymer Preparation Plant – Integrated Mixing, Maturation & Dosing System

DAGYEE Polymer Unit

This is a compact polymer batching system built for plants that don't have a lot of floor space. It does the same job as larger polymer preparation units—mixing powder or liquid polymer with water, activating it, and storing the ready-to-use solution—but in a smaller package. The footprint is significantly reduced, making it suitable for package treatment plants, pilot systems, and facilities where space is at a premium.

The system works with both dry powder and liquid polymers. It can be configured with either two chambers or three chambers, depending on your space and performance requirements. The two-chamber option combines mixing and maturation in one tank, which saves space but requires careful control. The three-chamber option separates the functions for better quality control.

This system is designed for small to medium applications. If you're treating less than a few hundred cubic metres per day, or if you're running a pilot plant, this is the right scale of equipment. It gives you automated polymer preparation without taking up half your plant room.

Product Overview

The DAGYEE Polymer Preparation Unit is a fully automated system for continuous preparation of polymer solutions from dry powder or liquid polymers. The unit combines precise polymer metering, controlled wetting, gentle mixing, and age-dependent discharge to produce fully activated polymer solutions with consistent concentration and quality.

Key Components:

• Polymer powder hopper with level sensor

• Precision dosing screw feeder driven by VFD motor

• Pre-wetting system to prevent agglomeration

• Three-chamber tank (mixing + maturation + storage)

• High-speed mixer in mixing chamber

• Low-speed mixer in maturation chamber

• Automatic water control with flow meter

• PLC control panel with HMI touch screen

• Complete piping and skid mounting

Core Function:
The system takes raw polymer powder or liquid, meters it accurately, mixes it with water, matures it to full activation, and stores the ready-to-use solution for dosing to the application point—all automatically and continuously. The PLC controls the entire sequence, from water filling to polymer feeding to solution transfer between chambers.

How It Works – Step by Step

The compact system follows the same basic process as larger units, scaled down for smaller applications.

Step 1: Polymer Feeding
Dry polymer is stored in a small hopper with a tapered bottom. A variable speed screw feeder meters powder to the wetting zone. The feeder is driven by a VFD, so you can adjust the feed rate precisely. For liquid polymers, a metering pump delivers emulsion or solution polymer to the mixing zone.

The feeder outlet is heated to prevent moisture from clogging the screw. This is particularly important for PAM powders, which absorb moisture from the air and can form blockages if the heater is not present.

Step 2: Pre-Wetting
As the powder leaves the feeder, it passes through a water spray that wets each particle. This step prevents lumps from forming. If the powder hits water without pre-wetting, it forms agglomerates that never fully dissolve. Those lumps waste polymer and can block downstream equipment.

Step 3: Dissolution
The wetted polymer enters the mixing chamber with additional water. A high-speed mixer breaks up any remaining particles and starts the dissolution process. The polymer begins to hydrate and uncoil.

Step 4: Maturation
In a three-chamber system, the solution overflows into a separate maturation chamber. A low-speed mixer keeps the solution moving without damaging the polymer chains. The solution stays in this chamber for the programmed maturation time, usually 30 to 60 minutes.

In a two-chamber system, the mixing and maturation happen in the same tank. The mixer runs at a lower speed after the initial dissolution phase to allow the polymer to activate without excessive shear. This saves space but requires more careful control of mixer speed and timing.

Step 5: Storage
The matured solution moves to the storage chamber, where a gentle agitator keeps it uniform. When dosing pumps call for solution, it's ready to go. Level sensors control the preparation cycle automatically.

The system operates in two main modes: solution preparation and dosing.

1. Solution Preparation

• For dry reagents (lime, powdered carbon, dry coagulants): reagent is fed from hopper via feeder into mixing device, mixed with water to specified concentration. Finished solution is stored in tank.

• For liquid reagents (chlorine, hypochlorite, liquid coagulants): reagent is delivered from storage tank via dosing pump to dissolution tank (if dilution needed) or directly to dosing pump.

2. Dosing
Finished solution is delivered to the process via dosing pumps with adjustable capacity. Dosing is controlled by signals from process controllers (flow, pH, turbidity, ORP) or according to process specification.

Control Modes:

• Automatic — from process controllers

• Semi-automatic — from control panel

• Manual — local pump and valve control

Polymer Preparation unit Model

Polymer preparation Unit Advantage

Reduced Chemical Consumption
Proper polymer activation significantly reduces chemical usage. Automated systems typically reduce polymer consumption by a substantial margin compared to manual batching, delivering significant cost savings over time.

Precision Preparation and Dosing
The use of variable frequency drive screw feeders and accurate water metering ensures consistent solution concentration. The ratio of water flow to powder feed rate determines concentration, and the automated system maintains this ratio precisely.

Considerable Savings in Running Costs
Precise polymer preparation reduces waste and optimises performance. Well-controlled hydraulic retention and contact times ensure the polymer reaches full activation before dosing, maximising its effectiveness.

Labour Saving and Easy Operation
The system is fully automated. Operators only need to spend a short time per day on refilling the hopper and visual inspection. No dedicated operator is required for continuous operation.

Space Saving and System Centralisation
The compact skid-mounted design integrates mixing, maturation, and storage in one unit. This saves valuable plant space and simplifies installation.

Optimised Mixing Properties
Separate high-speed and low-speed mixers in different chambers ensure proper dissolution without damaging polymer chains. This preserves flocculation performance and ensures complete polymer activation.

Zero Powder Loss
Enclosed systems eliminate dust exposure and ensure full utilisation of polymer without waste. This improves operator safety and reduces chemical costs.

Material: Stainless Steel, PP, or FRP

Bottom line: If your budget allows, pick stainless steel. Pay once and use it for 15 years. You will not have to think about it again.

I have seen too many plants buy a PP tank to save money. Three years later, the tank is cracked and leaking. The fittings are brittle. They end up buying a stainless steel unit anyway. The cheap one ends up being the expensive one.

Control Options

PLC with HMI Touch Screen
The full-featured control option includes a PLC and touch screen display. Operators can set concentration, maturation time, and dosing rate. The system displays real-time status and alarms. Data logging is included for performance tracking.

Timer-Based Control
For simpler applications, a timer-based control system is available. The operator sets the cycle times manually, and the system runs on a fixed schedule. This is cheaper and simpler but less flexible than the PLC option.

Key PLC Functions

• Automatic start/stop based on storage tank level

• Precise polymer feed control via VFD

• Water flow control via flow meter and control valve

• Maturation timer with age-dependent discharge

• Alarm handling and fault detection

• Remote monitoring capability (optional)

Polymer preparation Unit Feature

Three-Chamber System
The unit features separate chambers for mixing, maturation, and storage. This ensures that polymer solution is aged for the correct duration before dosing, achieving maximum flocculation performance.
Variable Speed Mixers
High-speed mixing in the first chamber ensures rapid dissolution of polymer particles. Low-speed mixing in the maturation chamber prevents polymer chain shearing while maintaining solution uniformity. Gentle agitation in the storage chamber prevents settling without degrading the polymer.
Level and Age-Dependent Discharge
Ultrasonic level sensors monitor solution levels in each chamber. The system transfers solution from maturation to storage only when the solution has reached the programmed maturation time. This ensures that partially matured polymer is never dosed to the application point.
Enclosed Design
The entire system is enclosed from powder feeder through to storage tank discharge. This prevents polymer dust from escaping into the plant environment, protecting operators and reducing housekeeping. It also prevents moisture ingress that could affect powder quality.
Precision Water Control
A flow meter and control valve maintain consistent water flow to the mixing chamber. The system automatically adjusts the water flow to match the desired solution concentration and polymer feed rate.
PLC Control with HMI
The system is controlled by a PLC with a user-friendly HMI touch screen. Operators can view real-time status, adjust settings, and monitor alarms. The system records operating data for performance tracking and troubleshooting.
Safety Interlocks

The system includes safety interlocks that prevent operation if the hopper is empty, water supply is low, or any system fault is detected. This ensures reliable operation and protects equipment from damage.

Polymer preparation Unit Remark

♦ Model selection: Process capacity or flow volume is necessary
♦ Raw material: SS304 or SS316.
♦ Manufacturer: We have our own workshop so that best quality and loweat price can be provided for you.
♦ Customization: Custom-made is available.

Standard Inclusions:

• Two-chamber tank (polypropylene)

• Powder feeder with hopper and screw

• 2 mixers (dissolution + maturation)

• Water supply system with filter and valves

• Control unit (timer or PLC)

• Wheeled skid

• UPVC piping

• Operation and maintenance manual

What Makes DAGYEE Units Different

Summary

The DAGYEE Complete Polymer Preparation Plant is a ready-to-run system that takes dry or liquid polymer, prepares it properly, and delivers fully activated solution to your dosing point. It uses a three-chamber design with age-dependent discharge, so you get consistent solution quality and full flocculation performance. The heated feeder outlet, low-shear mixers, and pre-wetting system are features that many systems omit, but they make the difference between a system that works reliably and one that gives you trouble.

Whether you're treating municipal wastewater, dewatering sludge, or running a mining operation, this plant delivers the polymer solution you need, when you need it, without wasting chemical or operator time.

Contact Us

The DAGYEE Compact Polymer Batching System is designed for plants that need reliable polymer preparation but don't have the space or budget for a full-scale unit. It's built to the same standards as our larger systems, scaled down for smaller applications.

Contact our team for a free consultation and system sizing for your application.

Get in Touch:
 Free Application Assessment – We'll look at your wastewater and suggest what fits
 Customized Design – Built around your flow, space, and treatment goals
 Fast Quotation – Detailed estimate within 48 hours
 Project References – We'll share examples of similar installations
 Factory Tour – Come see our facility

DAGYEE offers free sizing help. Tell us your plant flow, sludge type, and dewatering equipment. We will tell you what fits.

Inquiry Us

Quantity：

Company Name：

Add：

Tel：

Fax：

Your Name *

Your Email *

Product Name

Your Message *