Does water treatment fine filtration equipment need to be backwashed?

The filter element in the precision filter is often made of polypropylene thermal spray fiber membrane, nylon, PTFE microporous filter membrane and other filter media. Its filtration accuracy can be achieved, the filter pores are irregular, especially the polypropylene thermal spray fiber membrane, because its structure is made of PP material dissolved spinneret winding, and the normal filtration direction is from the outer surface of the filter element to the inner surface of the permeation filtration. The backwashing process is to flush the water from the inner surface of the filter element to the outer surface, and the backwashing process cannot flush the fine particulate impurities and activated carbon powder attached to it, and the backwashing water pump needs to have a high head to complete.

This will have an adverse impact on operating costs and operating energy consumption, and the use of high-pressure flushing will also increase the pressure bearing capacity of precision filters, increasing investment costs.

On the other hand, the filter element of the precision filter is a low-cost item to procure, and it is easy to replace.

Generally, it is not flushed, because 1 5 micron and other fine filtration will be destroyed by positive and negative washing. However, if you want to rinse, rinse with purified water for flushing, and rinse with purified water for recoil as well.

Two layers, depending on how thick the filter cotton is. At least two layers, if thin, put 3 layers. The top layer of physical filtration, found to be full of dirt, thoroughly washed, dried and reused.

The filter cotton below is used to cultivate nitrifying bacteria and is not washable. After a long time, I found that the water was not good, and then replace it with a new one.

Yes, but it depends on whether the filter you install has a better filtration effect or an ordinary one. If it is ordinary, it is recommended that you must burn it above 100 degrees Celsius before drinking. It is very convenient to install the filter on the faucet, and the filter material inside the filter water dispenser needs to be replaced after a long time.

However, the effect of filtering water like this filter may not be as good as that of a drinking fountain. The direct drinking machine is low and suitable for most families The household water purification system is roughly divided into four parts: pre-filtration, water purification, soft water, and terminal direct drinking, ranging from thousands of yuan to tens of thousands of yuan. The water purifier used in general households is called the terminal direct drinking machine, which integrates multiple technologies such as activated carbon, ultrafiltration, nanowisp, ultraviolet disinfection, RO membrane filtration, ozone bacteria, etc., and consumers only need to be straight.

Yes, pre-filters are mainly used to filter large particulate matter.

The backwash filter is a kind of precision equipment that uses the filter screen to directly intercept impurities in the water, remove suspended solids and particulate matter in the water, reduce turbidity, purify water quality, reduce the generation of fouling, bacteria and algae, rust and so on, so as to purify water quality and protect the normal operation of other equipment in the system. The water enters the self-cleaning filter body from the water inlet, and due to the intelligent (PLC, PAC) design, the system can automatically identify the degree of impurity deposition and signal the blowdown valve to automatically discharge the water.

Nowadays, the problem of water pollution is becoming more and more serious, and it has become an important factor restricting the sustainable development of China's social economy, which has attracted the attention of all parties. The reclaimed water reuse system is a new type of biochemical water purification treatment system specially developed for the reuse of industrial sewage and domestic sewage.

Focusing on pretreatment, dosing system, ultrafiltration, reverse osmosis or nanofiltration, a complete set of water treatment system is formed, and domestic sewage, urban sewage and industrial wastewater are treated with advanced technology to remove toxic and harmful substances, heavy metal ions and other impurities that pollute the water body, and then disinfect and sterilize, meet or exceed the national standard for miscellaneous water (or relevant regulations), and are widely used in enterprise production or residents' lives. Reclaimed water reuse treatment equipment provides convenience for sewage treatment, but sometimes the treatment effect is not ideal in the process of use.

So what factors affect the use of sewage treatment equipment?

1. Load: The load of the biological treatment reactor should be controlled within a reasonable range.

2. Water temperature: water temperature is one of the important factors, within a certain range, with the increase of temperature, the rate of biochemical reaction accelerates, the rate of proliferation is also accelerated, the composition of cells such as proteins, nucleic acids, etc. is very sensitive to temperature, and when the temperature rises or falls suddenly and exceeds a certain limit, there will be irreversible damage.

3. pH value: the optimal pH value of aerobic microbial growth activity is between, while the optimal pH value required by anaerobic microbial activity is between.

4. Oxygen content: The concentration of dissolved oxygen in the mixture at the outlet of the air aeration tank should be kept at about 2mg l, and anaerobic microorganisms must survive in an environment with very low oxygen content or even absolute anaerobic.

5. Nutrient balance: The imbalance of various nutrients in the sewage will affect the activity of microorganisms, and then affect the effect of treatment equipment.

6. Toxic substances: If the content of toxic substances in sewage exceeds the limit, it will affect the activity of microorganisms, and then affect the effect of treatment equipment.

The introduction of what factors affect the use effect of reclaimed water reuse treatment equipment is here, the above factors affect the use of equipment, so the above factors should be avoided when using, so that the reclaimed water reuse water treatment equipment can work normally, and you can also specifically understand what is the relationship between the sewage treatment effect and temperature, and then know how to avoid it.

Product-related categories.

Water treatment equipment, self-cleaning filter, automatic backwashing filter, differential pressure filter, high-precision filter.

The self-cleaning filter removes impurities such as sediment, clay, suspended solids, algae, biological slime, macromolecular bacteria, organic matter and other fine particles from the water. It is widely used in food, petroleum, chemical industry, papermaking, hotel, metallurgy, mining, electric power, irrigation, aquaculture, circulating water, reclaimed water reuse, municipal water, various pretreatment filtration and other industries.

There is one is: MBR integrated sewage treatment equipment, the specific process includes: AO A A O MBR AO+MBR, which is divided into two forms: above-ground and buried.

There are many, and there are plastic water tanks for water treatment.

Lightryde's main business.

Reclaimed water reuse equipment, wastewater equipment, sewage treatment equipment, zero discharge equipment, seawater desalination equipment.

Plastic cleaning sewage treatment equipment.

1. Mechanical filter.

The mechanical filter is a pressure vessel filled with a specified thickness of filter material, a single-layer mechanical filter when filled with a single filter material, and a double-layer or multi-media filter when filled with different kinds of filter media.

Function: In the water quality pretreatment system, the quartz sand with different particle sizes in the pressure vessel of the multi-media filter is filled according to a certain gradation, and the flocculated raw water passes through the filter material layer from top to bottom under a certain pressure, so that the suspended solids in the water can be intercepted and removed, and the multi-media filter can effectively remove the suspended solids, fine particles, full-valent iron and colloids, bacteria and algae and organic matter in the raw water. Its effluent SDI15 (pollution index) is less than or equal to 5, which can fully meet the inlet water requirements of reverse osmosis device.

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2. Reverse osmosis equipment.

Reverse osmosis is one of the most widely used membrane separation processes, in which water is passed through the membrane under pressure, while soluble salts, colloids, organics and microorganisms are trapped on the membrane surface and discharged with the concentrated water. It effectively removes all organic matter and 90% of 99% ions.

Reverse osmosis is a modern new type of pure water treatment technology. The purity of the water quality is improved by means of reverse osmosis elements, and impurities and salts contained in the water are removed. The purified water we drink every day is treated by reverse osmosis equipment, and the water quality is clear.

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3. Ultrafiltration equipment.

Ultrafiltration is between microfiltration and nanofiltration, and there is no obvious dividing line between the three. In general, ultrafiltration membranes have pore sizes between um 1 nm and operating pressures of MPa. It is mainly used to intercept and remove suspended solids, colloids, particles, bacteria and viruses and other macromolecules in water.

Mineral water: In the manufacture of mineral water, ultrafiltration technology is applied, and in the engineering design, the pore size of the membrane and the type of membrane will be selected according to the analysis report of the water quality of the mineral water, and the ultrafiltration design will be designed.

Food: ultrafiltration technology is gradually adopted in the production of dairy products, fruit juices, wines, condiments and other foods, such as the separation of protein and low molecular weight lactose from water in milk or whey, the clarification and sterilization of fruit juice, the removal of colored proteins, polysaccharides and other colloidal impurities in wine, and the removal of bacteria in soy sauce and vinegar, which shows the advantages of economy, reliability and quality assurance compared with traditional methods.

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Water treatment products and equipment include: water treatment equipment, self-cleaning filters, automatic backwash filters, differential pressure filters, high-precision filters, wastewater equipment, sewage treatment equipment and a series of products.

Water treatment equipment can be divided into sewage treatment equipment, raw water treatment equipment, water purification equipment, filtration equipment, and ultra-pure water equipment according to categories.

Guiyang Huamembrane Environmental Protection Technology ****.

Web Links. Operating reverse osmosis membrane, nanofiltration membrane, ultrafiltration membrane, membrane shell, precision filter, large-scale equipment for water treatment, brush bucket machine, water purifier, various filter elements, resin, activated carbon, FRP tank, valve head, filter, scale inhibitor, plexiglass column, water pump, pressure gauge, flow meter, quartz sand and other water treatment accessories.

Among them, water purifiers can be divided into RO reverse osmosis water purifiers, ultrafiltration membrane water purifiers, energy water purifiers and ceramic water purifiers according to their composition. The RO reverse osmosis water purifier is equipped with 5-stage filtration as standard, namely: PP cotton, granular carbon, compressed carbon, RO reverse osmosis membrane, and post-activated carbon 5-stage; Ultrafiltration water purifier is mainly based on ultrafiltration membrane, supplemented by other filter elements such as activated carbon (excluding energy filter element), ultrafiltration water purifier is divided into vertical and horizontal according to the installation method, vertical ultrafiltration water purifier is composed of PP cotton, granular activated carbon, compressed activated carbon, external pressure ultrafiltration membrane, T33; The horizontal ultrafiltration water purifier is composed of a stainless steel shell, an internal pressure ultrafiltration membrane, and a KDF.

Water purifiers are mainly divided into two categories: household water purifiers and commercial water purifiers.

Steel Mill Slag Flushing Water Filter Manufacturing Features:

The flushing water of the steel mill needs to be made of equipment without a filter All of them are made of stainless steel, the main body is 304 stainless steel (optional carbon steel), filter screen: 316L, using corrugated mesh design, the highest precision reaches 20 microns, fully automatic operation, suitable for various water supply systems, process water systems and industrial cooling water systems, especially the non-stop system with 24-hour continuous operation, which can filter out various mechanical impurities in the water and ensure the safe and reliable operation of system equipment. It is an ideal substitute for imported filters, and the indicators fully reach the same level of imported products.

3. Parameters. 1. Working pressure: MPA

2. Working temperature: 60 degrees (special material), filtration accuracy 20-200 microns.

3. Control mode: differential pressure, time and manual.

The above is the introduction of the backwash filter of Century Source Water Treatment, each manufacturer is different, Century Source can be customized according to the needs.

Century Source's technological innovation point.

1. For the first time, 316L stainless steel sintered filter screen is used, which has high strength, high precision, corrosion resistance, and the highest filtration accuracy.

Up to 2 microns.

2. The internal mechanical structure of patented technology realizes the high-pressure backwashing function in the real sense, and the filter screen.

The combination of external high-pressure backwash and internal self-priming and sewage discharge can easily and thoroughly remove the impurities trapped by the filter screen, with no dead angle and no attenuation of flux, ensuring filtration efficiency and long service life.

3. The cleaning differential pressure signal is transmitted by the differential pressure transmitter, which overcomes the disadvantage of large differential pressure switching error.

4. The transmission device adopts built-in type, which is sealed and isolated from the overflow parts, and is designed with tripping protection function to prevent.

The motor or transmission parts are damaged, and the operation is stable and reliable.

5. The sewage outlet relies on hydraulic sealing, no solenoid valve or other vulnerable seals, which is simple and practical.

6. The flange of the inlet and outlet is designed as a movable structure, which can be rotated to adjust the direction of the screw hole at will, which is convenient for on-site installation.

7. The internal anti-corrosion adopts a special non-toxic anti-corrosion process, which has good weather resistance, acid and alkali resistance, salt spray resistance, and anti-corrosion.

mold and other properties. 8. The electrical system adopts integrated control mode, which can realize remote control.

Our company has done a case of automatic filter in a steel mill, and it has been running for 6 years, and it is stable and no problem.

There are two kinds of water treatment and sewage treatment in a large range, and there are two kinds of treatment methods: sand filtration, carbon filtration, softening, ultrafiltration, reverse osmosis, ion exchange, EDI, disinfection and so on. It is mainly necessary to select different water treatment processes and equipment according to the water quality of the source and the requirements for the quality of the produced water.

Zhengzhou Tianhai specializes in the production of water treatment equipment. Suitable water temperature for the use of ultraviolet sterilizer: 5 50; Ambient temperature:

5℃~50℃；Ambient relative humidity: no more than 93% (at temperature 25). The appropriate voltage for the use of ultraviolet sterilizers:

AC 220V 10V, 50Hz.

There are roughly four major parts: water purification, sewage, seawater desalination, and several households.