GN Tubular Centrifuge for Singapore Microalgae Harvesting Project

1.Project Introduction

1.1 One High Speed tubular centrifuge for microalgae harvesting and one feed Peristaltic pump for treating capacity Volume: 900L and biomass concentration: ~30g/L (3%) microalgae size: ~4µm

1.2 Expected dryness of microalgae: After treatment, the moisture content in microalgae is about 30-40%

1.3 Expected volume of microalgae: The expected collection rate 95% or more, and solids larger than 2µm can be separated

1.4 5 times separation processes are required for 900L feed with above condition. Re: 5 times

How long is each separation process?

1.5 110 minutes for each separation process, including shutdown, dismantling to collect solids, cleaning drum about 50 minutes.

1.6 900L material will takes about 550 minutes in total.

1.7 The peristaltic pump tubing is made of silicone material, and it is estimated to be 1 year

2.GN Tubular Centrifuge model GNGQ142G introduction

2.1 High Speed Tubular Centrifuge is a kind of fine separation equipment, which is especially suitable for the solid-liquid separation of suspensions with thin concentration, fine particles and small solid-liquid weight difference, or liquid-liquid-solid separation. It is necessary equipment for Industries of pharmaceutical, food, chemical, and biological products, fermentation broth, beverages, blood products, etc.

High Speed Tubular Centrifuges is artificial slag removal equipment, and the processing capacity is limited, so it is generally used for working conditions with low solid content and relatively small processing capacity.(GNGQ) Clarification Type Tubular Centrifuge

2.2 The centrifuge rotates at a high speed to reach a suitable working speed (the speed can be adjusted by the electric control panel), and the feeding inlet is continuously fed from the bottom, and a certain feeding pressure (greater than 0.05Mpa) is required.

The specific gravity of liquid phase in the feeding inlet is lighter, and it gradually spirals upward from bottom to top to continuously discharge from the clear liquid outlet at the upper part of the rotor.

2.3. The specific gravity of solid phase is relatively heavier, and it settles inside the rotor. After the solid is collected and full in the drum, the machine stops, and the rotor is manually removed for slag cleaning.

2.4. After the slag removal is completed, the rotor needs to be installed and reset, and then the next separation process begins.

This process can achieve solid-liquid separation.

GN 3 Phase Decanter Centrifuge on Korean Waste food treatment plant project.

1.Korean Waste food treatment plant Project introduction

First crushing and Screw Press separate most of solids. After liquid is going to 3 phase decanter to separate oil and rest of solids.Makeup of the waste (%wt oil, water and solids):6% SS and 5%~6% oil, the rest is water.After Screw press process there is no big particles.Volume of waste to be treated capacity is 16ton/h and operating 8 hours per a day.This plant is new there is no 3 phase decanter. New plant they want to install 3 phase decanter for removing oil. Many new waste food treatment plant is going to install 3 phase decanter since some years.Delivery time to customer is September 2023.

2. GN 3 Phase Decanter CentrifugeIntroduction and advantages

GN 3 phase decanter centrifuge is mainly designed for Solid-liquid-liquid three-phase separation of materials.With our over 10 years of experience in the separation industry, it is the advanced type machine for 3 phase separation. It is designed for 24 hours continuous and smooth operation throughout the day. It is mainly composed of driving system, decanter bowl, screw conveyor inside the bowl, cover box, skid and VFD control panel.To ensure that the separation process can take place, the solid phase must be the specifically heaviest phase and the two liquid phases must have different densities. The main difference between the 2 phase decanter and 3 phase decanter is that the 3 phase decanter not only separate the solids but also separate two phase of the liquid. GN 3 phase decanter is widely used for oil , water, solids separation industry.

2.2 Advantages and special features

2.2.1 Stainless Steel VFD Control Panel

1.Excellent corrosion resistance and long service life

2.Minimum IP55 protection level meets outdoor use demand.

3.The positive pressurized explosion-proof control panel can be made according to requirement.

2.2.2 Famous brand electric components

1.VFD from Yaskawa, ABB or Siemens series

2.PLC and touch screen from Siemens or other famous brands.

3.Circuit breakers and other components from Schneider or other famous.

4.Common DC (Direct Current) bus energy feedback braking is adopted to achieve the purpose of energy saving

2.2.3 Automation and intelligence

The Constant Torque control system can be realized according to the demand. 2. The complete monitoring and alarm system can meet the requirements of bearing temperature rise protection, vibration monitoring and protection, overload protection, etc. 3. Control and display bowl speed and differential speed. Monitor the current of main motor and back motor. 4. Automatic flushing and dosing control can be equipped according to customer requirements

GN Disc Stack Separator machine application on Philippines VCO project

1.Philippines VCO Project background and introduction

Philippines VCO projects to be funded by the Philippine government for the next 50 years with a yearly budget of about UD$ 9M. We working in this since 2015 but the law was only enacted and signed 2 years ago and the implementing rules only approved in 2022. The initial fund of US$ 9M was released June 2022 but the government agency tasked to implement and bid out the projects failed to complete the bidding documents.

We recommended the “design and build” approach in selecting suppliers instead of buying individual machines from various suppliers. There is a confidential document called terms of reference or TOR which can be used as one of the bidding documents by the government agency in charge of the coconut projects. We’ve incorporated GN specs for 2x disc separators and 1x tubular separator in each project. Since the US$ 9M was not used in 2022, this money reverts back to the government and can no longer be accessed for subsequent years. A new budget of US$ 9M is released for 2023. Up to this date, the government is not yet ready to bid out but they are now pressured to use the budget for this year, otherwise, the Philippine Senate will start investigating why they are not able to set up 5-10 coconut processing plants each year. Based on the process flow we’ve submitted to the government, each project will need at least 2 disc centrifuges and 1 tubular centrifuge.

2.GN Disc Stack Separator machine brief introduction.

The disc stack separator is also called disc separator, disc centrifuge or conical plate centrifuge, which belongs to a type of vertical centrifuge. The disc separator is driven by a motor and rotates at high speed. In the bowl of the disc separator, there is a set of disc-shaped parts nested with each other-commonly known as discs which are used for centrifugal sedimentation of materials. The suspension (or emulsion) to be processed enters the bowl of the disc separator through the feed pipe and flows through the gap between the discs, the solid particles (or droplets)settle on the disc under the action of the centrifuge to form a sediment (or liquid layer).

The sludge slides along the surface of the disc to separate from the disc and accumulates in the inner bowl where the d犀利士
iameter is large, and the separated liquid is discharged from the bowl through the liquid outlet. By using the disc separator, solid-liquid-liquid 3-phase separation or solid-liquid separation is realized.

GN screw press sludge dewatering machine application on Mexico WWT project

  1. Project brief introduction


Waste water plant GN screw press sludge dewatering machine model GNDL201 application date:Oct.2021. Material Composition Before Treatment:Wet Sludge at 3% solids

  1. GN screw press sludge dewatering machinemain specifications and advantages

2.1 GN screw press sludge dewatering machine Brief Introduction

GN screw press sludge dewatering machine is a kind of economic and environmental friendly sludge dewatering equipment. It is a new type of sludge extrusion dewatering equipment by using the principle of screw extrusion, through the strong squeezing force generated by the change of screw diameter and screw pitch, and the tiny gap between the floating ring and the fixed ring, to realize solid-liquid separation.

GN dewatering screw press is composed of fully automatic control cabinet, flocculation modulation box, sludge thickening and dewatering device, and liquid collecting tank. GN dewatering screw press is with automatic control technology, which can realize the flocculation fully automatic operation, and continuously complete the sludge thickening and squeezing, finally return or discharge the collected filtrate liquid.

GN screw press dewatering machine is widely used in sewage treatment project樂威壯
s of municipal, aquaculture, food, starch, oil, pharmaceutical, chemical, paper, leather and other industries

2.2Advantages of Screw Press Sludge Dewatering Machine

  • 1. Suitable for wide range sludge dewatering and can be used for oily sludge treatment.
  • 2. Operating continuously and automatically, not easy to block.
  • 3. Low investment and operation cost, no secondary pollution.
  • 4. Energy saving and environmental friendly, compact design with small footprint.
  • 5. Sludge can be dewatered under aerobic conditions to avoid phosphorus release from anaerobic sludge dewatering.