580mm Bowl Municipal Sewage or Industrial Wastewater Centrifuge

580mm Bowl Municipal Sewage or Industrial Wastewater Centrifuge

I. Details of Water Treatment field

The impurities such as glass and braids in the biochemical sludge from the sludge tank is pulverized and removed. The sludge pump sends the sludge (concentration 0.5~4% or higher) into the centrifuge, and the fully automatic flocculant dosing device adds continuously PAM flocculant solution (concentration 1~3‰) into the feed pipe through the dosing pump for flocculation in the feed pipe and in the vicinity to produce flocculus to be sent into the centrifuge. The dehydrated mud cake is discharged from the drum by a centrifuge, and transported to the outside through the screw conveyor.

The dehydration system is widely used for oxidation ditch, AB, A/O, A²/O, SBR, MBR, anaerobic fermentation, and other processes, as well as urban domestic sewage, municipal sewage, landfill leachate, urban tap water, purified water, and some industrial wastewater of conventional sewage treatment processes. Solid-liquid separation is achieved by a high-performance DE type two-phase high-efficiency centrifuge.

Modern water purification and sewage treatment processes, increasingly strict emission standards, and subsequent treatment of dewatered mud cakes, whether stacked, dried or incinerated, have set higher requirements for key equipment of excess sludge treatment.

II. Centrifuge characteristics

Unparalleled equipment investment costs and later-stage operation costs

For water purification plants and sewage treatment plants, high-performance water treatment centrifuge is an ideal solution, which is highly adaptable to sludge and has greater processing capacity at low concentration (SS 0.5). In the case of low concentration (SS 0.5%), it is not necessary to equip a concentrator to realize the dehydration function, which satisfy the requirements of the process for integrated concentration and dehydration.

The unique structure, advanced control system, and standard design are beneficial to cut down users' later-stage operation costs (pharmaceutical consumption, power loss, routine equipment maintenance, etc.).

Extremely low infrastructure investment and good on-site operating environment

Compared with the conventional filter-type equipment, the high-performance water treatment centrifuge is compact and efficient, covering only about a third of land, needless of auxiliary gas source, high-pressure water, featuring simpler pipe structures at the inlet and outlet, fully closed operation, and more humanized operating environment.

Diversified models, wide selection range, and complete engineering project

Whether your water treatment plant is in a scale of 5,000 tons/day or less or you are a large-scale environmentally-friendly company with a scale of millions of tons per day, you can find the right model configuration in a high-performance water treatment centrifuge. Meanwhile, the turnkey project (water introduction and discharging, cable laying, mud cake conveying, equipment infrastructure construction, and equipment installation) for dehydration room can be implemented to solve the disconnection between construction and suppliers, and to eliminate the worries of customers.

Modular design, easy to operate

Our design philosophy: To lower the requirements on the skills, educational level, and labor intensity of operators, and realize one-button start and stop of the control system, fault self-diagnosis, and safety self-protection.

Operator configuration and labor intensity

The high-performance centrifuge is an automatic and continuous working mode for feeding-separating-slag (liquid) discharging. The whole process requires no human intervention. Multiple sets of equipment require only one inspector (in conjunction with other positions). Unlike the plate-and-frame filter, it does not require manual cutting in the sludge discharging process, greatly alleviating the labor intensity of operators.

III. Technical characteristics of the centrifuge

Reduce the moisture content of the sediment under the action of spiral high pressure extrusion

High performance stainless steel

Because the sewage contains some corrosive ions or substances, to ensure the stability and the service life of the centrifuge, AISI321, AISI316, AISI316L or duplex stainless steel SAF2205 with high strength and corrosion resistance are used.

High-dryness screw conveyor and drum structure

The dehydration of solid particles relies mainly on strong centrifugal force, high-torque screw extrusion force (pushing torque), and ultra-long solid particle dehydration length. The centrifuge can generate centrifugal force exceeding thousands of G, 30 ~ 50% higher than the screw pushing torque of common centrifuges. The screw pusher torque, and the drum dehydration length is 10 ~ 20% longer than that of common centrifuges.

High torque involute planetary gear differential

The ultra-high pushing torque requires a high-torque involute planetary gear differential as the foundation. The differential equipped on the centrifuge features high torque, high speed, low heat generation, and excellent heat dispersion, which ensure that the centrifuge can be used for a long time and stably.

Fluids Outlet position Alloy wear plate

CIP washing system

The fully automatic control system is equipped with a CIP washing system, which can effectively solve the problem that it is not completely cleaned during the shutdown process and effectively avoid the equipment troubles caused by artificial factors.

Humanized centrifuge configuration

1.Spiral bearing (in the drum, concealed) lubrication technology: the lubricant is filled from the outside of the hood.

2,The hood adopts a hinged opening structure and is equipped with a high-pressure gas strut to assist the opening.

Variable pitch technology

Variable pitch technology is a relatively advanced technology in the world. It can effectively reduce the screw pushing torque, improve the processing capacity, and further reduce the sediment water content.

High rigidity screw rotor technology

Decanter centrifuge is a typical high-speed rotating device with different speeds and two rotors. The rigidity of the screw rotor directly affects the stability and safety of the equipment. Through theoretical analysis and calculation, the working speed of the high-rigidity screw rotor is far from the first-order and second-order critical speeds, which can avoid the resonance state at high speed.

Double-motor double-frequency conversion common DC bus

The main and ancillary motors of the centrifuge are controlled by a high-performance vector inverter. The ancillary motor is always in the generator state under the differential speed. The inverter adopts common DC bus technology. The auxiliary inverter can convert the electric energy generated by the ancillary motor into the power source to drive the main motor, thereby achieving the purpose of energy conservation.

Through the double-motor double-frequency conversion control technology, the stepless adjustment of the centrifuge differential speed can be realized. It features fast reaction speed, accurate torque detection, stable torque control, and low failure rate.

Constant torque control technology

The constant torque control of the centrifuge is the most advanced control mode in the world. The real-time monitoring of the actual output torque of the constant torque variable frequency motor through the high-performance auxiliary inverter is compared with the set torque value, and PID is used to adjust the material pushing speed of the screw conveyor in real time. The centrifuge can achieve continuous, stable, and economic operation.

DC bus constant torque control technology Double-motor double-frequency Conversion common

IV. Two-phase centrifuge model and technical parameters

The length dimension varies with motor power.

Chengdu ZK Separation Technology Co., Ltd. is a specialized solid-liquid separation equipment company established by Chengdu West Petroleum Equipment Co., Ltd. according to the development needs. Relying on the technical experience of long-term infiltration and accumulation in many fields including petroleum, chemical engineering, tunnel engineering, sewage treatment, mining equipment, etc., we have developed the high-efficiency sewage concentration and dehydration treatment series centrifuge, alcohol production line alcohol stillage treatment series centrifuge, crude oil and kitchen waste harmless and resource-oriented treatment series three-phase centrifuge, medical extract treatment three-phase centrifuge, SOR three-phase sludge separation system, TDU waste sludge thermal desorption treatment system and other multi-field products and their complete sets of technology, and possess a number of inventions, utility models and appearance patents.

ZK Separation always attaches much importance to the cultivation of talents in the chemical engineering and water treatment industries, and connects the frontier technologies such as mechanical analysis, materials science, fluid mechanics, aerodynamics, vibration isolation technology, automatic control technology, and sensor technology with the centrifuge industry. We have the teams of product R&D and manufacturing process engineers who have been working in the key enterprises of separation machinery industry for many years. On the basis of absorbing domestic and foreign advanced technology, and combined with the special features of production technology in various domestic application industries, we pay much attention to the industrial segmentation. We specialize in the design of petroleum, chemical engineering, coal chemical industry, steel, food, resin, fermentation, medicine, excess sludge of water supply and drainage, etc., completing the R&D, manufacturing and sales of dozens of products and auxiliary equipment including the solid-liquid two-phase, liquid-liquid-solid, solid-liquid-solid three-phase with different parameters explosion-proof centrifuge with flammable and explosive liquids as medium and the online real-time centrifuge with adjustable liquid layer. We have various unique techniques such as high-efficiency sewage concentration, dehydration treatment, three-phase separation of crude oil, kitchen waste, sludge and medical extract, wear-resistant energy-saving, explosion-proof sealing and interlock control. Our centrifuge has distinctive advantages including small covering area, simple process pipeline; high degree of automation; high safety protection measures; good on-site operating environment; strong material adaptability; and stable and reliable operation.

Our Company has research facilities and testing benches with complete performance and intact data collection, and the professional production equipment and testing instruments ensure the high-volume, high-quality manufacturing capabilities.

Over the years, our Company has been focusing on the acquisition of advanced equipment and the development of new technology. We have purchased advanced machining equipment from Germany, the United States, Japan and other countries. At present, we own more than 200 various modern processing equipment including processing centers of each link, CNC gantry milling, laser cutting machine, large-scale lathe, boring mill, high-precision grinding machine, plate shearing machine, bending machine, sand blasting and painting equipment, etc.