Efficient water purification quartz sand filtering method

Abstract

The invention relates to an efficient water purification quartz sand filtering method, and belongs to the technical field of quartz sand filtering. Comprising the following steps: S1, feeding circulating cooling water into a filtering tank; s2, adding potassium permanganate and ferrite into the circulating cooling water in the filtering tank, uniformly mixing, and carrying out a flocculation reaction to form a floc; and S3, sequentially filtering the water flowing out of the filtering tank through quartz sand filtering layers with different particle sizes in the filter. Before a water source is filtered, potassium permanganate and ferrite are used for pretreatment, natural organic matter can be effectively removed, meanwhile, quartz sand with different particle sizes can filter the water source stage by stage, and suspended solids, microorganisms and slime in circulating cooling water are effectively controlled to be filtered and intercepted; the water purification efficiency and the water purification effect are effectively improved.

Description

Technical Field

[0001] The invention relates to a high-efficiency water purification quartz sand filtering method, belonging to the technical field of quartz sand filtering. Background Art

[0002] Clean drinking water is one of the basic needs for maintaining human health. However, with the development of industrialization and urbanization, water pollution is becoming increasingly serious. Industrial wastewater, agricultural fertilizers and pesticides, domestic sewage, etc. are all sources of water pollution. Pollutants in water, such as heavy metals, bacteria, viruses and organic pollutants, not only seriously affect the ecological environment, but also directly threaten human health.

[0003] There are many different methods for purifying water. Common water purification filtration methods include sedimentation, filtration, distillation, etc. Compared with other methods, filtration can effectively remove suspended solids and some microorganisms, and is easy to operate and has high water purification efficiency. The media used in the filtration method can be activated carbon, ceramics, fiber, etc., but the filtration effect of these media is not ideal when used alone. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the filtering effect of the medium used in the existing water purification method is not ideal when used alone.

[0005] In order to solve the above problems, the present invention provides a high-efficiency water purification quartz sand filtering method, comprising the following steps:

[0006] S1: Send circulating cooling water into the filtration tank;

[0007] S2: adding potassium permanganate and ferrous salt to the circulating cooling water in the filtration tank, mixing and then performing flocculation reaction to form flocs;

[0008] S3: The water flowing out of the filtration tank is filtered in the filter through quartz sand filter layers with different particle sizes.

[0009] Further: the reaction time in S2 is 10-20 minutes, and needs to be appropriately adjusted according to the water temperature.

[0010] Furthermore: the lower the water temperature in S2, the longer the required reaction time.

[0011] Furthermore: the particle sizes of the quartz sand in the quartz sand filter layer of the filter in S3 decrease successively.

[0012] Further: after S3, any layer of quartz sand filter layer can be taken out separately.

[0013] Further: the ferrous salt in S2 can be any one of ferrous sulfate, ferrous chloride and ferrous nitrate.

[0014] Further: the potassium permanganate and ferrous salt in S2 can be added into water simultaneously or step by step.

[0015] Furthermore: the quartz sand in the quartz sand filter layer in S3 needs to have uniform particle size and sufficient purity and hardness.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This patent uses potassium permanganate and ferrous salts for pretreatment before filtering the water source, which can effectively remove natural organic matter. At the same time, quartz sand with different particle sizes can filter the water source step by step, and effectively control the suspended matter, microorganisms, and sludge in the circulating cooling water by filtering and intercepting, effectively improving the water purification efficiency and effect. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application is further described in detail in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The present invention provides a high-efficiency water purification quartz sand filtering method, comprising the following steps:

[0020] S1: Send circulating cooling water into the filtration tank;

[0021] S2: adding potassium permanganate and ferrous salt to the circulating cooling water in the filtration tank, mixing and then performing flocculation reaction to form flocs;

[0022] S3: The water flowing out of the filtration tank is filtered in the filter through quartz sand filter layers with different particle sizes.

[0023] In step S1, circulating cooling water is pumped from the well to the filtration tank by a water pump, and before the circulating cooling water enters the filtration tank, it may be necessary to pass through a primary filter to remove large particle impurities;

[0024] In step S2, an appropriate amount of potassium permanganate and ferrous salt are added to the circulating cooling water in the filtration tank. The ferrous salt can be any one of ferrous sulfate, ferrous chloride and ferrous nitrate, and a flocculation reaction is carried out by stirring and mixing it with a water source. The concentration of pollutants in the water can be reduced by utilizing the efficient flocculation effect of potassium permanganate oxidation of divalent iron, the effect of organic matter and the in-situ formed trivalent iron. The reaction time is 10-20 minutes, and is appropriately adjusted according to the water temperature. When the water temperature is lower, the required reaction time is longer, thereby improving the effluent water quality and facilitating the subsequent filtering step;

[0025] Potassium permanganate and ferrous salt in S2 can be added to water simultaneously or separately. Synchronous addition is simpler to operate, reduces the number of operating steps and time, and is suitable for rapid processing or use in automated systems. Stepwise addition may require more complex control and more operating steps, but can better control the reaction and provide better treatment effects.

[0026] In step S3, the water flowing out of the filtration tank is filtered through the filter, and the water source passes through the quartz sand filter layers with decreasing quartz sand particle sizes in sequence. The first-stage quartz sand filter layer uses quartz sand with a larger particle size to remove larger suspended particles. As the water flows through the filter, the quartz sand particle size of each layer gradually decreases, thereby gradually improving the filtration accuracy, effectively controlling the filtration and interception of suspended matter, microorganisms, and slime in the water, and improving the transparency and biosafety of the water. At the same time, a water quality monitoring device is installed at the outlet of the filter to monitor the water quality changes in real time;

[0027] The filter adopts a modular design. Each layer of quartz sand filter is placed in an independent module, which is easy to take out and replace separately. It provides a high degree of flexibility and can adjust the filter layer according to water quality changes and treatment needs. It makes maintenance and replacement of filter media easier because there is no need to remove all layers in the entire filter. Only the layer that needs maintenance needs to be operated, and a new quartz sand filter layer needs to be replaced to remove accumulated impurities to maintain the filtering effect.

[0028] The quartz sand in the quartz sand filter layer needs to have uniform particle size to form a more stable and compact filter bed, which helps to improve filtration efficiency, reduce the penetration of suspended particles, and reduce excessive wear or blockage in local areas, extending the service life of the filter. The quartz sand in the quartz sand filter layer must have sufficient purity to avoid reacting with chemicals in the water and maintain the purity of the water quality. It must have sufficient hardness to withstand long-term water erosion and particle collision, reducing wear and breakage.

[0029] The present invention and its implementation methods are described above, and such description is not restrictive. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design structures and embodiments similar to the technical solution without creativity, which should all fall within the protection scope of the present invention.

Claims

1. A high-efficiency water purification quartz sand filtration method, characterized in that: The steps include: S1: Send circulating cooling water into the filtration tank; S2: adding potassium permanganate and ferrous salt to the circulating cooling water in the filtration tank, mixing and then performing flocculation reaction to form flocs; S3: The water flowing out of the filtration tank is filtered in the filter through quartz sand filter layers with different particle sizes.

2. The high-efficiency water purification quartz sand filtration method according to claim 1, characterized in that: The reaction time in S2 is 10-20 minutes and needs to be appropriately adjusted according to the water temperature.

3. The high-efficiency water purification quartz sand filtration method according to claim 2, characterized in that: The lower the water temperature in S2, the longer the required reaction time is, which improves the effluent water quality and facilitates the subsequent filtration step.

4. The high-efficiency quartz sand filtration method for water purification according to claim 1, characterized in that: The first-stage quartz sand filter layer of the filter in S3 uses quartz sand with a large particle size, and the quartz sand particle sizes of the subsequent quartz sand filter layers decrease successively.

5. The high-efficiency quartz sand filtration method for water purification according to claim 4, characterized in that: The quartz sand filter layer of the filter in S3 adopts a modular design, and any layer of the quartz sand filter layer can be taken out separately for adjustment and cleaning.

6. The high-efficiency quartz sand filtration method for water purification according to claim 3, characterized in that: The ferrous salt in S2 may be any one of ferrous sulfate, ferrous chloride and ferrous nitrate.

7. The high-efficiency quartz sand filtration method for water purification according to claim 6, characterized in that: The potassium permanganate and ferrous salt in S2 can be added into the water simultaneously or step by step.

8. The high-efficiency quartz sand filtration method for water purification according to claim 5, characterized in that: The quartz sand in the quartz sand filter layer in S3 needs to have uniform particle size and sufficient purity and hardness to form a more stable and compact filter bed, improve filtration efficiency, and reduce penetration of suspended particles.