Versatile Accessories for Filtration of Suspended Solids Particulate Matter and Microorganisms in Wastewater Treatment

Equipment Description:

I. Working Principle
‌1. Solid-Liquid Separation Mechanism‌
A screen or microporous membrane (pore size 0.1-10μm) is used to physically intercept suspended solids, particulate matter, and some microorganisms, achieving solid-liquid separation through pore size differences.
The filter's dense mesh structure retains contaminants larger than the pore size (such as leftover fish pond bait and fiber debris), significantly reducing the suspended solids concentration in the filtered water.
‌2. Dynamic Filtration and Backwash‌
Sewage enters the drum, where its rotation generates centrifugal force to aid filtration. Liquid passes through the filter and is discharged, while solids are retained on the filter surface.
‌Equipped with an automatic backwash system, high-pressure water or air flows in reverse to flush the filter, removing accumulated impurities and maintaining filtration efficiency.
‌3. Adaptability‌
It can treat wastewater with a solids content of 0.1-5%, making it suitable for low-viscosity wastewater from industries such as papermaking, aquaculture, and printing and dyeing.

‌II. Technical Parameters and Advantages

IV. Typical Process Flow
1. Wastewater is pumped into the drum via an inlet pump;
2. As the drum rotates, liquid flows through the filter screen and is discharged, while solids are retained;
3. When the accumulated wastewater reaches a set threshold, the backwash system activates, using high-pressure water to remove the residue and discharge it into a sump;
4. The filtered water enters the next treatment unit or is directly reused.

Main structures and components:

I. Core Filtration Unit
1. Drum/Rotary Drum
The core component consists of a stainless steel frame (primarily 316L) forming a drum-shaped structure, covered with a woven filter screen (made of stainless steel wire, chemical fiber, or polymer). It rotates horizontally to achieve continuous filtration.
The drum diameter typically ranges from 0.5 to 3 meters, and the speed is adjustable (1 to 5 rpm) to accommodate different processing scales.
2. Screen/Filter
This multi-layer structure includes a support screen (coarse pore size) and a working screen (fine pore size), with a pore size range of 0.1 to 10 μm (corresponding to a mesh size of 25 to 200), to intercept suspended solids and particulate matter.
The filter screen utilizes a woven inverted trapezoidal cross-section, which is resistant to clogging and easy to clean.

II. Drive and Transmission System
1. Drive Unit
The drum is driven by a motor (mostly a variable-frequency motor) with a power range of 0.75 to 15 kW and a speed accuracy of ±1 rpm.
A gear or chain drive system ensures smooth drum operation. 2. Bracket and Support Structure
Welded I-beam or carbon steel brackets are equipped with rubber shock-absorbing pads to reduce equipment vibration.

III. Water Inlet and Outlet and Sewage System
1. Water Inlet System
Overflow Weir Distributor: Evenly distributes wastewater into the drum to prevent local overload and filter blockage.
Axial inlet pipes or diversion channels ensure that water evenly covers the screen along the drum axis.
2. Water Outlet System
Filtered clean water is discharged through radially radiating screens and piped to reuse or subsequent treatment units.
3. Sewage System
Backwash Device: High-pressure nozzles (0.3-0.5 MPa) spray water in reverse to remove impurities trapped by the filter screen.
Scraper/Slag Chute: Scrapes away residual dirt and discharges it into a slag trough to prevent secondary contamination.

IV. Auxiliary Control Components
‌1. Automatic Control System‌
The PLC integrated module monitors flow rate, pressure differential, and drum speed in real time, automatically triggering the backwash sequence.
The touchscreen interface supports parameter settings and fault alarms (such as overload and blockage).
‌2. Sealing and Anti-Corrosion Structure‌
The drum shaft ends utilize mechanical seals or packing seals to prevent wastewater leakage.
Key contact areas are nickel-phosphorus plated or lined with corrosion-resistant alloy to extend equipment life.

‌V. Typical Configuration Examples

Features:

1.High cost performance: Based on the customer's product positioning and development strategy, and with economic affordability as the foundation, we achieve the best cost performance.
2.The advanced and meticulous design concept of the equipment, along with the highly automated industrial equipment, showcases the image of a modern and advanced enterprise.
3. It has high adaptability, meeting the current production requirements and reserving room for development, taking into account the needs of increased production and improved quality in the future.
4.Quality compliance strictly adheres to the ISO900 quality management system, with every minute detail of the entire equipment installation being strictly controlled.

Domestic large-scale coating equipment, intelligent equipment, and environmental protection equipment production enterprises-Zhejiang Huier Coating Environmental Protection Equipment Co., Ltd has 37 years of experience industry team in the powder coating equipment,intelligent equipment and environmental protection equipment.It is the national high and new tech enterprise,Specialized, refined, and innovative small and medium-sized enterprises， scientific and technological SMES 27years specialized R&D, design, manufacture, installation, commissioning ,maintenance of varies coating equipment, automatic equipment, intelligent control system, waste water,waste gas environmental protection equipment and treatment engineering.The company is located in Wukang Street, Deqing County, covers an area of 30,000 square meters, workshop of more than 20,000 square meters, more than 200 employees. The company has passed ISO9001 international system certification, ISO14001 environmental management system certification and ISO45001:2018 Occupational health and safety management system certification, and obtained more than 40 national patents.

The company actively and constantly introduce excellent talents, focus on the development of coating equipment and environmental protection equipment of new technology, new process and new products every year.It is the mission of all staff to continuously develop and grow, meet the needs of customers and create value for customers.

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In aerospace, household appliances, light industry, furniture, machine tools, construction, motorcycles, automobiles, communications, aluminum, electric power, agricultural machinery and transportation and other industries by the user's praise. The company continue to innovate, research and development of new products, design and manufacture safety, energy saving, environmental protection, intelligent features of fire-proof safe, powder coating environmental protection equipment and intelligent equipment engineering projects.

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