Basic requirements and characteristics of coal filter press
As the checkpoint equipment of the coal slime water treatment system, the filter press must have basic characteristics such as large-scale equipment, rapid operation, and stable and reliable system. With the requirements for the moisture content of the mud cake getting lower and lower, the requirements for the coal filter press The requirements are also gradually increasing.
(1) Large-scale equipment
The use of large filter plates and short configurations can not only reduce the floor space, but also reduce the number of pressure differential transmissions due to the
Causes and treatment measures of damage to the filter plate itself of plate and frame filter press
As the output of the customer's factory continues to increase, the load on the plate and frame filter press is getting larger and larger, and the frequency of equipment failure is higher. Further analysis and summary are needed to better maintain and improve the equipment so that it can exert greater effectiveness. .
(1) When the sludge is too thick or dry lumps are left behind, it will cause the feed port to be blocked. At this time, there is no medium between the filter plates and only the pressure of the hydraulic system itself is left. At this time, the plates themselves ar
Basic requirements for filter press equipment in coal preparation plants
With the rapid development of coal preparation technology, coal preparation plants are becoming larger and larger, the separation efficiency is constantly improving, the amount of fine-grained coal is increasing, coal quality is deteriorating, and coal slime is increasing. Problems such as this have also arisen. Higher requirements have been put forward for the filter press, the key equipment of the coal slurry water treatment system.
Basic requirements and characteristics of coal filter press
(1) Large-scale equipment, using large filter plates and short configurati
Filter cake washing method of plate and frame filter press
In order to ensure the filtration quality, when the filter cake needs to be washed, the plate and frame filter press can be designed with open flow one-way washing and two-way washing, and undercurrent one-way washing and two-way washing.
Open flow one-way washing: the washing liquid enters sequentially from the washing liquid inlet hole of the thrust plate, passes through the filter cloth and then through the filter cake, and flows out from the outer hole filter plate. At this time, the liquid outlet nozzle of the perforated plate is closed, and there is no The liquid outlet n
Application of filter press in solidification treatment of waste mud on pile foundations
In coastal areas where the foundation soil is mainly clayey soil, sandy soil, silt and silty soil, wet-working hole-forming cast-in-place piles are widely used. However, a large amount of mud will be produced during the construction process. If it is not consumed in time, it will seriously pollute the surrounding soil and environment, and even cause the project construction progress to stagnate and the project quality to be damaged. Therefore, it is necessary to treat the waste mud. Explore and optimize.
At present, the harmless treatment method of mud is relatively single. Gen
Application of filter press in solidification treatment of waste mud on pile foundations
In coastal areas where the foundation soil is mainly clayey soil, sandy soil, silt and silty soil, wet-working hole-forming cast-in-place piles are widely used. However, a large amount of mud will be produced during the construction process. If it is not consumed in time, it will seriously pollute the surrounding soil and environment, and even cause the project construction progress to stagnate and the project quality to be damaged. Therefore, it is necessary to treat the waste mud. Explore and optimize
change.
At present, the harmless treatment method of mud is relatively single
Acceptance standards for plate and frame filter press repairs
The acceptance after maintenance is an inspection of the quality of equipment repair and an important guarantee for the safe operation of the equipment, especially the repair of imported equipment. For this purpose, the acceptance standards for plate and frame filter press repair have been formulated. The main contents of the acceptance criteria are as follows:
(1) Single machine and single control, which can complete operations such as automatic feeding, compaction, pressure maintaining, plate pulling, blowing, plate turning and filter cloth cleaning; filter press feed pump, flushing w
Why is the membrane filter plate of the membrane filter press easily damaged?
The membrane filter plate of the diaphragm filter press is mainly composed of a base plate, a rubber diaphragm, a circular pressure plate, a metal layer, a sealing strip, a roller, a filtrate nozzle, an extrusion air nozzle, etc.
The diaphragm filter plate is placed between two perforated filter plates. Its function is to form a filter chamber together with the perforated filter plates. The diaphragm filter plate obtains high-pressure air bulges from the blower pipe to change the cavity volume and reduce the moisture content of the filter cake. .
The closed chamber of the diaphra
Increasing cleaning frequency can optimize filter press operating conditions
Due to insufficient daily maintenance and use of the plate and frame filter press, the filter plate is blocked by coal and mud during the working process of the filter press. During the feeding process, the filtrate cannot pass through the filter plate, causing pressure leakage and causing filter failure. The cake cannot be formed or the filter cake is very thin because the filter cloth is clogged or damaged, which significantly reduces the working efficiency of the filter press.
Therefore, it is recommended that the production department clean the filter plate thoroughly and increase t
The diaphragm filter press treats the sludge to a moisture content of 60% and is more valuable.
The water in urban sludge is divided into free water, capillary water, surface-adhered water and internal water. Free water, water not affected by particles, accounts for about 70% and is the main object of mechanical dehydration of sludge. Capillary water exists in the capillary tubes between sludge particles, accounting for about 20%. It is an important dehydration target of high-performance dehydration machinery. Surface-adhered water, water adhered to the surface of particles or cells, and internal water, present inside sludge particles (including water within cells).
Traditional me
Filter press equipment is required in urban sludge treatment projects
Sludge is a by-product of sewage treatment and has considerable production. Sludge contains water and solid matter, mainly the products transformed from trapped suspended matter and processed colloidal matter and dissolved matter. Sludge collects pollutants in sewage and also contains a large number of bacteria and parasite eggs, so it must be properly treated to prevent secondary pollution. Nowadays, a large amount of unstabilized sludge has become a heavy burden for urban sewage treatment plants and a great threat to the environment. In the construction project of urban sewage treatment plan
Plate and frame filter press material filtration method
When the plate and frame filter press filters different materials or the same material, due to different moisture content and even temperature, the filtration effect (speed, moisture content) may be different. Some materials even need to add filter aids such as flocculation before filtering. Agent, carbide slag, etc. to adjust the filtration characteristics of the material. So the filter cakes will not be exactly the same. Before filtration, the filter cloth and filter plate should be checked. If washing or air blowing is required, the washing plate, non-washing plate and washing hole should b
The closing pressure of the filter plate of the plate and frame filter press is small
In the actual operation of the plate and frame filter press, if the liquid level in the hydraulic station tank is low, it may be caused by leakage points in the hydraulic pipeline, which will cause pressure loss in the hydraulic station; there is a problem when the filter plate limit detection device is installed A large position error will cause the filter plate displacement control system to float up and control the hydraulic pump to stop working in advance; if the closing pressure of the filter plate is set too small, it will also cause pressure loss in the hydraulic station, causing the pr
What are the reasons and countermeasures for the low closing pressure of the filter plate?
During the actual operation of the plate and frame filter press, if the liquid level in the hydraulic station tank is low, it may be caused by leakage points in the hydraulic pipeline, which will cause pressure loss in the hydraulic station; there are major problems in the installation of the filter plate limit detection device. The position error causes the filter plate displacement control system to lift up and control the hydraulic pump to stop working prematurely: if the filter plate closing pressure is set too small, it will also cause the filter plate closing pressure to be small.
Debugging of hydraulic pump station for diaphragm filter press
The membrane filter press is a kind of filtration equipment that achieves solid-liquid separation by applying external force to the filtered medium. It is suitable for solid-liquid separation of various suspensions. It has the characteristics of good separation efficiency, safety and reliability, and easy operation. It is widely used in Fields such as urban and rural domestic sewage treatment and disposal and industrial wastewater treatment that require solid-liquid separation.
Follow the filter press source manufacturer Sudong to learn about the debugging of the hydraulic pump station:
What paths does the filtrate take in the membrane filter press?
After entering the membrane filter equipment, the muddy filtered liquid turns into clean liquid and flows out. So what paths does the filtrate go through during this process?
The filtrate is first pumped into the water inlet pipe by the feed pump, and the feed pump gradually increases the filtrate in the water inlet pipe, so that the filtrate enters the two water distribution pipes under high pressure conditions, and the water distribution pipe is connected to the top of the box isolation machine. The two-person water inlet flange is connected, so that the filtered liquid enters the two
Drug residues will cause the filter cloth of the filter press to be unclean.
During the operation of the Wastewater Treatment filter press, the filter cloth is continuously cleaned under high pressure. When cleaning is not clean, you can consider the following points:
The filter cloth is too old to be used, the water pressure is not enough, the flow rate of the nozzle is not enough, etc.
The sludge residue is serious. If PAM floc remains, it will directly block the pores of the filter cloth and seriously affect the air permeability.
The causes of drug residues are:
1. Because the polymer mixing time is too short, the agent has not been com
