Skid‑Mounted Automatic Chemical Dosing System

Skid‑Mounted Automatic Chemical Dosing System

Brief Description

The skid‑mounted automatic chemical dosing system is an integrated dual‑tank dosing unit with 500 L effective volume per tank. The complete package includes SUS304 stainless‑steel conical‑bottom tanks, agitator units, variable‑frequency metering pump sets, pipe‑valve assemblies, level monitoring devices, calibration components, skid frame and electric control system. Pre‑assembled and tested in factory, the unit only requires pipe connection and power supply for on‑site commissioning. It is widely used in boiler water treatment to dissolve, store and accurately meter water‑treatment chemicals for scale inhibition, pH adjustment, chemical de‑oxygenation and anti‑corrosion protection.

Product Overview

This automatic dosing system is furnished with two 500 L SUS304 conical‑bottom tanks, each fitted with a vertical agitator for full chemical dissolution and homogenization. Variable‑frequency metering pumps are equipped together with safety valves, pulse dampers, Y‑strainers, liquid flow indicators and calibration columns. Magnetic‑flap level gauges output 4‑20 mA signal for local indication and remote level transmission.

The skid frame is welded of carbon‑steel profiles with anti‑corrosion plastic‑spray coating, integrated with access platform and service stair for convenient inspection and maintenance. The control cabinet is equipped with frequency inverters and well‑known brand low‑voltage components, supporting local manual and automatic operation. Reserved DCS signal ports enable remote monitoring via central control system.

Configurations can be adjusted for different chemical media. For volatile toxic chemicals, optional safety assemblies including gas absorber, gas leakage detector & alarm unit and safety eyewash shower are available.

Product Parameters

Notes:

1.Optional ZJ metering pump models: GK38-67L/2.94MPa-I(II,III), JZ-80/10-I(II,III), GK38-134L/12.94MPa-I(II,III)

2.Pa (Pascal) is the pressure unit of SI measurement standard.

Working Principle

1.Solution Preparation

Chemicals are fed into dosing tanks and mixed with process water at a required ratio; agitators run continuously to produce homogeneous solution while magnetic‑flap level gauges monitor liquid level in real‑time.

2.Metered Delivery

Variable‑frequency metering pumps suck prepared solution and deliver pressurized chemical to injection points after filtration and pressure stabilization, and safety valves provide over‑pressure relief protection for the piping circuit.

3.Operation Control

The control system collects level signals and adjusts pump frequency according to external system feedback to modify dosing rate, and local manual operation mode is also available for field operation and debugging.

4.Chemical Functions

Different dosed chemicals realize corresponding process objectives including boiler‑water scale inhibition, feed‑water pH adjustment, dissolved‑oxygen removal and metal passivation & anti‑corrosion for water‑treatment systems.

5.Safety Interlock

Low‑level signal activates pump protection to avoid dry‑running damage, and the leakage detector monitors ambient conditions and triggers safety alarm under working conditions with toxic‑chemical application.

Key Design & Performance Features

1.Integrated Skid‑Mounted Design

Fully pre‑assembled in factory with integrated service platform, this structure greatly reduces on‑site installation and piping workload and shortens the whole equipment commissioning period.

2.Corrosion‑Resistant Tank Construction

Dual 500 L SUS304 conical‑bottom tanks facilitate sediment discharge, and all wetted components adopt stainless‑steel material which is compatible with various water‑treatment chemicals.

3.Variable‑Frequency Adjustable Dosing

Variable‑frequency metering pumps provide continuously adjustable flow, and complete auxiliary pipe‑valve accessories ensure stable dosing pressure and flow rate during long‑term system operation.

4.Remote Level Transmission & Flow Calibration

Magnetic‑flap level gauges output 4‑20 mA remote signal for central monitoring, and a calibration column is provided for convenient on‑site verification of actual pump output flow.

5.Flexible Intelligent Electric Control

Equipped with frequency inverters and well‑known electrical components, the control cabinet supports manual / automatic modes and a reserved DCS interface which supports data acquisition and remote control by upper‑level central system.

6.Optional Safety Configurations

For volatile and toxic‑chemical service conditions, gas absorber, leakage alarm unit and eyewash‑shower device are optional configurations to realize reliable operator safety protection.

Applications

1.Boiler‑water systems of thermal power plants and captive power stations for automatic preparation and metered injection of scale inhibitors, pH regulators and oxygen‑scavenging agents.

2.Chemical dosing treatment for feed‑water and boiler water of industrial steam boilers and waste‑heat boilers.

3.Other industrial processes such as the petrochemical industry requiring continuous and accurate metered injection of water‑treatment chemicals.

Company Profile

WESUS is a leading manufacturer and total solution provider for advanced sewage and sludge treatment systems. Founded in Yixing, China in 2013, we offer reliable, cost-effective equipment and engineering services to global clients. Certified with ISO 9001, ISO 14001 and ISO 45001, we boast strong in-house R&D and manufacturing capabilities supported by a large production base, a professional technical team, patents and university cooperation. Our comprehensive product range includes screening, filtration, sludge dewatering, mixing, aeration and customized solutions. With end-to-end services from design to after-sales support and proven global project experience, we have earned wide recognition including national high-tech enterprise and 5-star after-sales certifications. Adhering to the philosophy of real innovation, excellence and win-win cooperation, WESUS is committed to providing smart, sustainable water treatment solutions for municipal and industrial clients worldwide.

FAQ

Q1: Are you a direct manufacturer? What certifications do you hold?
A: We are a direct manufacturer with our own production facilities and R&D team. We maintain full control over quality, cost, and delivery, and hold certifications including ISO 9001/14001 for our core products.

Q2: What types of collaboration models do you offer?
A: We provide flexible solutions:
- Equipment Supply: Standalone or packaged systems.
- Turnkey Solutions (EPC): Design, procurement, construction, and commissioning.
- Technical Cooperation: Process upgrades, operational maintenance support, and technical consulting.

Q3: How is after-sales service and support ensured?
A: We provide full lifecycle support:
- Warranty: 12–24 months on core equipment.
- Response: 7x24 remote support with fast on-site assistance when needed.
- Spare Parts: Genuine parts are stocked for long-term supply security.
- Maintenance: Annual Maintenance Contracts (AMC) are available to ensure long-term system efficiency.

Q4: What is your typical project execution process?
A: Our standardized workflow ensures efficiency and transparency:
1. Requirement Analysis → 2. Proposal & Quotation → 3. Design Finalization → 4. Production & Factory Testing → 5. Shipping & Installation → 6. Commissioning & Training → 7. After-sales Service.
Customer involvement is encouraged at key milestones.

Q5: Can you provide references or case studies?
A: We have extensive global project experience across municipal and various industrial sectors. We can provide detailed, anonymized case studies and client references upon request.

Q6: What are your payment terms and delivery lead times?
A: - Payment: We accept T/T and L/C, with standard industry progress payment terms.
- Lead Time: Standard equipment: 4–8 weeks. Large custom projects: 12–20 weeks.
A clear production schedule is provided upon contract signing.

Q7: How do you serve international clients?
A: We are experienced in international projects, arranging complete logistics (FOB, CIF, DDP, etc.) and providing full customs documentation. Our designs pre-consider compliance requirements in target markets.

Q8: Can you upgrade or retrofit existing systems?
A: Yes. We specialize in evaluating existing facilities and providing customized retrofit and expansion solutions to enhance performance and capacity with minimal investment and downtime.

Q9: How can we start a consultation?
A: Please contact our Sales Engineering team. To facilitate an efficient discussion, please have your treatment requirements, water quality data, and site information ready. We will provide a preliminary proposal and professional advice.