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Stacked screw solid-liquid separator

Stacked screw solid-liquid separator

Stacked screw solid-liquid separator
Stacked screw solid-liquid separator
Stacked screw solid-liquid separator
Stacked screw solid-liquid separator
Stacked screw solid-liquid separator

Stacked screw solid-liquid separator is a practical solid-liquid separation equipment.

  • Name: Stacked screw sludge dewatering machine
  • Material: Stainless steel
  • Voltage: 380V
  • Working principle: Squeezing dehydration
  • Purpose: Solid liquid separation of fecal sludge
  • Customized processing: Yes
  • Warranty period: 12 months

Table of Contents

In the fields of sewage treatment, industrial wastewater treatment, and resource recovery, the stacked screw solid-liquid separator has become an indispensable core piece of equipment in modern environmental protection engineering thanks to its unique design principles and high efficiency. This equipment combines mechanical squeezing with dynamic filtration to achieve continuous, automated operation for sludge dewatering and solid-liquid separation, providing an innovative solution to the pain points of traditional dewatering equipment, such as easy clogging, high energy consumption, and large footprint.

Advantages and Characteristics of Stacked Screw Solid Liquid Separators

  • Efficient solid-liquid separation: Through the rotation and propulsion of the screw shaft, the stacker can achieve efficient solid-liquid separation, effectively removing solid particles and suspended solids from wastewater.
  • Strong processing capability: suitable for treating wastewater with high solid content and high viscosity, with significant advantages.
  • Easy to operate: high degree of automation, easy to operate, reducing labor costs and intensity.
  • Easy maintenance: The device has a compact structure and is easy to maintain, reducing maintenance costs and time.

Structure and working principle of solid-liquid separator

Structural composition: The stacked screw solid-liquid separator is mainly composed of a spiral shaft, multiple fixed rings, a moving ring, a driving device, and other parts. The spiral shaft is exquisitely designed and has strong conveying and extrusion capabilities; The unique structure of the laminate improves separation efficiency and effectiveness.

Working principle: Sludge is gradually squeezed and dehydrated under the drive of a spiral shaft. During the process of advancement, the sludge gradually decreases in size with the filter gap and pitch, and under the blocking effect of the back pressure plate, it generates tremendous pressure and continuously reduces in volume, achieving the goal of full dewatering. Meanwhile, water flows out through the gaps between the stacked sheets, achieving solid-liquid separation.

Precautions for Stacked Screw Solid Liquid Separators

  • Before using the stacked screw solid-liquid separator, it is necessary to ensure that the sludge has undergone appropriate pretreatment, such as dosing and flocculation, to meet the conditions for entering the stacked screw machine for dewatering.
  • During the operation of the equipment, it is necessary to regularly inspect and maintain the equipment to ensure its normal operation and extend its service life.
  • According to the characteristics of wastewater in different industries, it may be necessary to adjust the operating parameters and configuration of equipment to achieve the best solid-liquid separation effect.

Core advantage: Breaking through tradition and defining new industry standards

The advantages of the screw-type solid-liquid separator are significant: it uses low-speed screw compression and a dynamic filter slot structure, resulting in energy consumption per unit of processing capacity that is far lower than that of centrifuges. Annual electricity consumption can be reduced by over one million kilowatt-hours, and no large amounts of rinse water are required, saving up to 50 tons of water per day. The integrated electrical control system enables 24/7 automatic operation, reducing labor costs by over 70%. The dynamic filter slots effectively separate oily substances, preventing blockages, and can directly process sludge with a solids content of 0.3% to 3% without the need for a thickening tank; the equipment occupies only 50% of the floor space of a centrifuge, integrating multiple modules into one unit to save space; during operation, the low-speed rotation of the screw shaft reduces noise to below 65 decibels, and the sealed chamber reduces odor dispersion by 90%, achieving a comprehensive upgrade in efficiency, economy, and environmental friendliness.

Parameter Table of Stacked Screw Solid Liquid Separators

modelprocessing capacity(kg/h)Discharge height (mm)Dimensions (mm)Net weight (kg)Operating weight (kg)Processing capacity (kg/h)
ZDL 1316-122502400*750*150024050012
ZDL 2019-203503000*800*150034055020
ZDL 30130-704954000*700*2100820123070
ZDL 30390-1204954000*1500*210018202810120
ZDL 304120-1804954000*2000*175015003220280
ZDL 401100-1606004500*1600*230023503650300
ZDL 402100-1606004500*1900*230033504650320
Note: All product parameters are not limited to the content of the above table and are customized to meet different customer needs.

Successful case of solid-liquid separator

Application scope of stacked screw solid-liquid separator

  • Municipal sewage treatment

The remaining activated sludge is treated and dehydrated to reduce its moisture content to below 80%, making it easier to transport and incinerate. For example, after a sewage treatment plant in Nanjing adopted a screw press, the volume of sludge was reduced by 60%, saving 800,000 yuan in annual transportation costs.

  • Industrial wastewater treatment

Dyeing and printing industry: Separates dyes and heavy metals, reducing COD in effluent to below 150 mg/L for compliant discharge.

Pharmaceutical industry: Treats antibiotic wastewater, avoiding secondary pollution caused by flocculation breakdown in traditional equipment.

Chemical industry: Treats solid particles and harmful substances in waste liquids and waste residues to ensure smooth production.

  • Food and Agriculture

Juice processing: After dehydration, the moisture content of the residue is ≤65%, which can be directly used as feed or organic fertilizer raw materials, increasing resource recovery rates by 40%.

Animal husbandry: Treating pig manure and other livestock manure to produce organic fertilizer with a nitrogen content of ≥3%, promoting circular agriculture. For example, a pig farm uses a screw press to treat pig manure, achieving resource utilization.

sludge
pulp
animal manure
distillers grains

Frequently Asked Questions (FAQ)

Question 1: How dry will the final sludge cake be?
The dryness of the final product depends on the type of sludge you have. Generally, you can expect a final solids content of 15% to 25%. Some high-pressure machines might produce a slightly drier cake. But the stacked screw press achieves this result with far less energy and no risk of clogging.

Question 2: What is the main difference between this and your standard screw press?
Our standard Solid-Liquid Separator is a high-pressure machine. It is perfect for fibrous materials like cow manure. It uses a single screw pressing against a durable screen. The Stacked Screw Separator is a low-pressure, self-cleaning machine. It is designed specifically for low-concentration, oily, or difficult-to-dewater sludges.

Question 3: Is it difficult to operate and maintain?
No, it is incredibly easy. The system is designed for fully automated, 24/7 operation. A control panel manages everything. Maintenance is very low because the screw rotates so slowly. This means there is very little wear on the rings and other components.

Question 4: What industries can use this machine?
It is extremely versatile. The most common applications are municipal wastewater treatment plants. It is also used in slaughterhouses, food and beverage processing factories, dairies, chemical manufacturing, and the papermaking industry. It can handle almost any type of sludge that can be mixed with a polymer.

What are the types of solid-liquid separators

There are various types of solid-liquid separators, including spiral extrusion separators, inclined screen separators, and stacked screw separators, each with their own characteristics and applicable ranges. When choosing, it should be comprehensively considered based on actual needs, wastewater characteristics, and treatment requirements.

Stacked screw solid-liquid separator
Inclined screen solid-liquid separator
Spiral extrusion solid-liquid separator

The Stacked Screw Separator represents a major step forward in dewatering technology. Its unique, self-cleaning design completely solves the problem of clogging that affects other systems. This is especially true when dealing with oily and greasy waste. This reliability, combined with its extremely low power and water consumption, makes it the most intelligent and cost-effective investment for modern waste treatment. It simplifies your operations. It reduces your costs. It provides a dependable solution for turning problematic sludge into manageable solids.

Introduction to Fude Machinery Company

The production equipment includes: fermentation raking machine, dryer, granulator, crusher, mixer, round throwing machine, organic fertilizer production line, etc. The company will continue to adhere to the business philosophy of “quality first, customer first” and provide higher quality metal equipment solutions for global customers.
Since its establishment in 2015, Fude Machinery has been committed to providing high-quality and high-performance metal equipment solutions to global customers. With advanced production technology, strict quality control, and continuous innovative research and development capabilities, we have received customer satisfaction praise.

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