How is the water treatment quartz sand filter media filtered

In the process of quartz sand filtration, the removal of suspended particles is mainly removed by the adsorption and adhesion between particles and filter materials and between particles and particles. This involves two principles: the first is the migration of suspended particles carried by water, which is close to the surface of the filter material from the water flow line, which is the migration mechanism; The second is that when the suspended particles are in contact with the filter material, they adhere to the surface of the filter material by relying on the action of some or several forces (including van der Waals force, surface tension and Coulomb force), which is the adhesion mechanism of the particles.

Quartz sand is used as a filtering material, just like water becomes clear after passing through the sand. Blocking the suspended matter in the water, mainly for those subtle suspended solids.

Quartz sand plays an increasingly important role in water treatment, removing suspended solids to play a filtering role, just like water penetrating into the ground through sand and gravel, blocking those suspended solids in the water, mainly for those fine suspended solids. 1. It is used for industrial water, domestic water and municipal water supply systems that require effluent turbidity of 5mg l to meet drinking water quality standards; 2. Removal of suspended solids and solids in industrial wastewater; 3. It can be used as pretreatment equipment in ion exchange softening and desalination systems, and coarse filtration equipment for industrial feed water with low water quality requirements; As well as used in swimming pool circulation treatment system, cooling circulation water purification system, etc.

Quartz sand filters are often set after the pressure filter to remove fine particles in the liquid to meet the subsequent process alignment.

Water requirements. Sometimes it is also installed at the end of the complete water treatment system to prevent fine particles from entering the finished water.

Commonly used filter elements are hive filters and meltblown filters.

The accuracy of the filter element is measured in microns (m) and has the following specifications: , which can be selected according to different requirements.

Quartz sand filtration is often used as a security filter for electrodialysis, ion exchange, reverse osmosis, ultrafiltration and other devices.

Generally, it is used for about 3 6 months or when the inlet and outlet pressure difference (P2-P3) is greater than the replacement to ensure the pretreatment effect and prevent the reverse osmosis membrane from being damaged by particles and suspended solids.

1. Inlet and outlet diameter: In principle, the inlet and outlet diameter of the quartz sand filter should not be smaller than the inlet diameter of the matching pump, which is generally consistent with the diameter of the inlet pipeline.

2. Nominal pressure: determine the pressure level of the filter according to the pressure that may occur in the filter pipeline.

3. The selection of the number of meshes: the main consideration is the impurity particle size that needs to be intercepted by the quartz sand filter, which is determined according to the requirements of the medium process.

4. Filter material: The material is generally the same as the material of the connected process pipeline, and the filter made of cast iron, carbon steel, low alloy steel or stainless steel can be considered for different use conditions.

Quartz sand filter is a kind of filtration equipment that reduces water turbidity to achieve the effect of purifying water quality, and the fine filtration effect of quartz sand filter is one of the factors to judge the quality of quartz sand filter. What are the application ranges of quartz sand filters? Today, I will answer them one by one for you.

1. What is the scope of use of quartz sand filter?

1. Quartz sand filters can be widely used in electronic power, petrochemical industry, metallurgical electroplating, paper making and textile, pharmaceutical dialysis, food and beverage, drinking water, factory and enterprise water, swimming pools, etc., which can meet the needs of liquid filtration in various industries.

2. The quartz sand filter is small in size, easy to install, and saves space in the air. It can be installed outdoors, no need to build a house, the product has good anti-corrosion performance, and can be installed both indoors and outdoors, saving the cost of civil construction.

3. Quartz sand filter can be used for industrial water, domestic water and municipal water supply systems that require effluent turbidity of 5mg l to meet drinking water quality standards.

4. Quartz sand filter can be used as pretreatment equipment in ion exchange softening and desalination systems, and coarse filtration equipment for industrial feed water with low water quality requirements.

Second, what is the fine filtration effect of the quartz sand filter?

1. The filtration accuracy of the quartz sand filter is between, which can effectively remove colloidal particles and polymer organic matter. The quartz sand filter uses the refined quartz sand filter material filled in the filter, and when the inlet water flows through the filter layer from top to bottom, the suspended solids and viscous particles in the water are removed, so that the turbidity of the water is reduced.

2. The quartz sand filter uses quartz sand as the filler, the quartz sand filter material layer is thicker, the filter tank is deeper, and the civil engineering cost is higher. The filtration efficiency is high, the filtration effect is better, there is no need to stop the backwashing, and the operating cost is low.

3. The quartz sand filter automatically forms a dense state at the top and bottom of the filter bed during filtration, which is conducive to ensuring the effluent quality under various operating conditions, and the filter material is fully dispersed during backwashing, and the cleaning effect is good.

Quartz sand filters are widely used and can be used in various scenarios such as food drinking, life drinking, swimming pools, etc. The fine filtration effect of the quartz sand filter is good, the filtration efficiency is high and the filtration effect is rotten.

Quartz sand filter is a kind of water purification equipment that can filter dirt and impurities in water, and the correct use of quartz sand filter can make its service life longer, so how to use the quartz sand filter correctly? What are the precautions when using quartz sand filters? Today, I will answer them one by one for lead.

1. How to use the quartz sand filter correctly.

1. First of all, the start-up preparation: check whether the various valves, pipelines, instruments and various equipment accessories attached to the quartz sand filter body and cavity calendar are in good condition; Check whether the raw water pump, electrical equipment, various field instruments and various ancillary facilities are in good condition; Confirm that various discharge, positive washing, backwashing, etc. valves have been closed; The filter exhaust valve closes when it sees water.

2. Then it is run after starting, and the working process of quartz sand filter is exhaust, flushing, backwashing, positive washing, backwashing, drainage, and running. Exhaust and flushing are set in the exhaust step due to the presence of air inside the equipment during the initial commissioning. Open the upper inlet valve and exhaust valve of the mechanical filter, and after the exhaust valve is discharged, close the exhaust valve, and open the lower exhaust valve for standby.

Backwash is the accumulation of impurities in the packing layer, and the internal indenter loss will continue to increase. When the loss of the inlet and outlet pressure head reaches the set value, the system will automatically activate the constant pressure device to convert it to the backwash state, when the backwash is over, the hydraulic valve changes the direction of the feed water to achieve backwashing one by one, which is more convenient to clean the accumulated impurities.

The positive washing is to open the upper and lower valves of the quartz sand filter, run until the turbidity of the effluent is 1mg l, and press the positive washing to the turbidity of the drainage 1mg l, and not less than 30 minutes.

The final drain is to open the filter exhaust valve and the lower discharge valve, and discharge the water in the filter to 200mm above the filter layer, and the time should be determined according to the specific situation.

3. The manually controlled quartz sand filter needs to rotate the manual automatic selection switch to the manual position, the motor and the hydraulic control valve are connected to the power supply, the hydraulic control valve is opened, and the sewage discharge begins to be discharged. The selector switch rotates to the automatic position to enter the automatic state.

4. The automatically controlled quartz sand filter needs to rotate the manual automatic selection switch to the automatic position, and first set the filter time and sewage discharge time timer. The lower digital tube of the timer displays the set value, and the upper digital tube displays the timing value.

2. Precautions for the use of quartz sand filter.

The high-temperature resistant quartz sand filter should be careful to avoid the temperature of the working environment rising or falling too fast. Although the high-temperature quartz sand filter can effectively avoid the quality damage caused by the high temperature of the working environment to the air purification equipment, if the temperature in the working environment rises or falls too fast, it will also affect the service life of the high-temperature quartz sand filter to a certain extent.

When using the quartz sand filter, it is necessary to pay attention to avoid the sudden rise or fall of the temperature of the working environment, if the temperature rises and falls too quickly, the service life of the quartz sand filter will be affected.

When purchasing a quartz sand filter, people need to understand the applicable conditions of quartz sand before they can choose, and regular maintenance and maintenance of the quartz sand filter can make the service life of the quartz sand filter longer, so what are the applicable conditions of the quartz sand filter? How to maintain the quartz sand filter? Today, I will answer them one by one for you.

1. What are the applicable conditions of quartz sand filter?

1. Quartz sand filter is suitable for industrial water, domestic water and municipal water supply systems that require effluent turbidity less than 5mg l to meet drinking water quality standards.

2. The quartz sand filter can be applied to the water supply facilities such as industry, agriculture, Yingchaichang town, living quarters and other water supply facilities that require the water turbidity of the water quality after filtration to be less than 5mg l. The double-layer filter material can be directly used for filtration, and the concentration of the influent is often kept below 605 mg L, and coagulant should be added before filtration, and the turbidity of the inlet water is less than 15 mg L when used for precipitation filtration. The single-layer media filter can only be used for the filtration of precipitated water with an influent turbidity greater than 15 mg l.

3. Quartz sand filter is suitable for pretreatment equipment in ion exchange softening and desalination systems, coarse filtration equipment for industrial water supply with low water quality requirements, and used in swimming pool circulation treatment system, cooling circulating water purification system, etc.

Second, how to maintain the quartz sand filter.

1. Before using the quartz sand filter, it is necessary to prepare for the operation of the pretreatment equipment, before starting the raw water booster pump, check whether the inlet and outlet valves of the raw water booster pump are opened, and then turn on the main power switch of the booster pump, and then turn on the power switch of the raw water booster pump.

2. When the stone ridge sand filter needs to be run again during the initial operation or after a long period of shutdown, the equipment should be vented.

3. The strength of the backwash should be controlled during the backwashing of the quartz sand filter, and the quartz sand filter material should be avoided from leaking out of the system during the flushing.

Quartz sand filters are suitable for use in water facilities where filtration requirements require water turbidity of less than 5mg l. Quartz sand filter should be prepared for the operation of pretreatment equipment before use.

(1) The water distribution board is opened, the hole is welded with the water distributor, and it can also be connected with a thread connection to facilitate future replacement. and spends leg holes.

2) The lower head welded branch pipe is mainly used to support the water distribution board.

3) The branch pipe passes through the water distribution board and is welded. The water distribution board is welded with the lower head, which requires double welding on both sides, (4) the coil plate, and the welding body and the downwind head.

5) Weld the upper head.

6) tank opening: upper manhole (can also be shared with the packing hole), lower manhole (according to the distance between the lower head and the water distribution plate) discharge hole, air hole, water inlet and water outlet hole.

7) Install the water supply pipe and water wire pipe.

8) Weld the tank legs and lifting lugs.

9) Mirror polishing and grinding.

10) Weld the outer cylinder waterway pipeline.

11) Arranged in a tic-tac-toe pattern, the inlet pipe, the sewage discharge pipe and the outlet pipe, 5 valves distribute the water flow.

Features of quartz sand filter:

1.The quartz sand filter integrates coagulation reaction, filtration and cleaning. The process of water treatment is simplified.

It occupies a small area, has a simple structure, and is flexible and convenient for installation and operation. It reduces the energy consumption and labor management costs of multiple links of the raw water treatment process, and reduces the difficulty of operation;

2.The application of coagulation reaction mechanism and sedimentation mechanism can effectively remove suspended solids and colloidal substances in water, which is conducive to further reducing the turbidity of effluent in the sand filtration area.

3.The filter media can be automatically circulated and cleaned continuously, without stopping for backwashing;

4.It can be combined with the micro-flocculation device to reuse all kinds of industrial water, municipal domestic sewage, and industrial water with the highest inlet SS MGL, and the removal rate can reach 90%, which can achieve near-perfect results.

Quartz sand filter material.

The material can be divided into FRP, stainless steel and rubber lining anti-corrosion.

Introduction: Everyone should have been in contact with the filter in life, but the filter we have generally contacted or seen should be a small filter, I don't know if you have heard of the quartz sand filter, today I want to bring you the quartz sand filter, see what the principle of the quartz sand filter is, and its product characteristics.

Quartz sand filter principle

Generally speaking, the process of high-efficiency continuous filter is divided into two parts, one is the filtration of raw water and the other is the cleaning of filter media, and the completion of the two is independent of each other but at the same time. Their completion is done in different bits.

Quartz sand filter uses several media, and its pH adaptation range is 2--3, and it is operated at room temperature. The protection device configured by the system has the function of backwashing in addition to the function of protection, the amount of water consumed is relatively small, and it can set its fully automatic function according to the user's requirements. When the filter is subjected to a certain pressure, the original liquid will pass through the action of the medium to achieve the effects of flocculation, adsorption and interception, so as to remove impurities, so as to achieve the purpose of filtration.

The raw materials contained in the filter include anthracite, quartz sand, manganese sand, granular porous ceramics, etc., and the amount of these consumer raw materials can be added according to the user's own needs. It has a high filtration precision, which can remove the tiny particles of colloids and polymer organic matter. The activated carbon filter is mainly used to adsorb suspended solids in water, and it can also remove pigments and so on.

Features of quartz sand filter:

1. Compact structure. The filter has a small footprint, is relatively simple to build, and is very flexible in installation and operation. It brings together coagulation, filtration, and continuous cleaning, which reduces many links in raw water treatment and greatly reduces the difficulty of operation.

2. Continuous and automatic cleaning. The filter can be cleaned automatically and continuously, so you don't have to stop the machine for repeated cleaning, which is much more convenient and affordable.

3. The coagulation reaction effect is obvious. The filter uses the mechanism of coagulation reaction and the mechanism of sedimentation, which is very effective for removing suspended solids and colloidal substances in water. This makes the filter filter better than other filters.

4. The filter is made of special materials, which makes its service life relatively long.

After the introduction, everyone's understanding of quartz sand filter has gone further. Quartz sand filters have a wide range of applications in production and life, and you can pay attention to them in ordinary times.

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