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CN-122010272-A - Preparation method of functional mineral water based on graded activated medical stone

CN122010272ACN 122010272 ACN122010272 ACN 122010272ACN-122010272-A

Abstract

The invention discloses a preparation method of functional mineral water based on graded activated medical stones, which comprises the following steps of 1) selecting high-purity grey medical stones, crushing, screening three-level granularity, namely 2-3mm level, 0.5-1mm level and 80-100 mesh level, respectively performing washing impurity removal, air blast drying and low-temperature activation, 2) setting up a multi-level collaborative mineralization device, namely a mineralization column made of 304 stainless steel, internally installing a flow guide baffle with alternate holes, filling medical stones which are subjected to graded pretreatment of 2-3mm, 0.5-1mm and 80-100 meshes from top to bottom, and playing the roles of primary impurity removal, secondary adsorption and three-level dissolution, and 3) performing accurate mineralization control, namely, after raw water is pretreated by a sedimentation tank, sending the raw water into the mineralization column, controlling the temperature and the total contact time, realizing regional stay, and obtaining the functional mineral water through precise filtration of 0.22 mu m and pH regulation. The preparation method has the characteristics of double excellent purification and dissolution performance, improved efficiency and stability and optimized resource and cost.

Inventors

  • XIA HAOTIAN

Assignees

  • 深圳市山水智慧农业有限公司

Dates

Publication Date
20260512
Application Date
20251203

Claims (10)

  1. 1. The preparation method of the functional mineral water based on the graded activated medical stone is characterized by comprising the following steps of: 1) The medical stone grading pretreatment comprises selecting high-purity grey medical stone, crushing, screening, and performing water washing, impurity removal, air blast drying and low-temperature activation on the three-level granularity of 2-3mm (30-40%), 0.5-1mm (30-40%) and 80-100 mesh (20-30%). 2) The multi-stage collaborative mineralizing device is built by adopting a mineralizing column made of stainless steel, arranging a guide baffle with alternate holes therein, filling medical stones which are subjected to the grading pretreatment in the step 1) with 2-3mm, 0.5-1mm and 80-100 meshes from top to bottom, and playing the roles of primary impurity removal, secondary adsorption and tertiary dissolution; 3) And 3, accurate mineralization control, namely, pretreating raw water by a sedimentation tank, feeding the pretreated raw water into a mineralization column in the step 2), controlling the temperature and the total contact time, realizing regional residence, and carrying out accurate filtration on effluent by at least 0.22 mu m to obtain the functional mineral water by regulating and controlling the pH.
  2. 2. The preparation method of claim 1, wherein the high-purity grey medical stone in step 1) contains less than or equal to 15wt% of SiO 2 ≥65wt%、Al 2 O 3 .
  3. 3. The method according to claim 1 or 2, wherein the air-blast drying in step 1) is 105 ℃ air-blast drying to a water content of 1wt% or less, and the low-temperature activation is 200 ℃ low-temperature activation for at least 2 to 3 hours.
  4. 4. The process according to claim 1, wherein the mineralization column in step 2) has an inner diameter of 500-600mm and a height of 2000-2500mm.
  5. 5. The method according to claim 4, wherein at least 4 alternate perforated baffles are arranged in the mineralization column in step 2), and preferably the diameter of the perforated baffles is 10-15mm and the pitch of the perforated baffles is 50-60mm.
  6. 6. The method according to claim 1, wherein the raw water in step 3) is pretreated by a precipitation tank until the turbidity is less than or equal to 5NTU.
  7. 7. The method according to claim 6, wherein the flow rate of the raw water entering the mineralization column in the step 3) is 0.8 to 1.0L/min.L.
  8. 8. The process according to claim 1, 6 or 7, wherein the temperature is controlled in step 3) to 25-30 ℃ and the total contact time is 90-150 minutes.
  9. 9. The preparation method according to claim 8, wherein the residence time in the zoning in the step 3) is 40-50 minutes for primary impurity removal, 30-40 minutes for secondary adsorption and 20-30 minutes for tertiary dissolution.
  10. 10. The preparation method according to claim 9, wherein in the step 3), the pH is stabilized at 7.5-8.5 by fine adjustment of the flow rate, and the concentration of the positive hydration ion is 2.8-3.5mg/L, so as to obtain the functional mineral water meeting the GB 8537-2018 standard.

Description

Preparation method of functional mineral water based on graded activated medical stone Technical Field The invention relates to the technical field of drinking water preparation, in particular to a preparation method of functional mineral water based on graded activated medical stone. Background Water is the source of life and healthy origin, water is the basis for human and animal and plant survival, and no water is available. The water is directly related to the aging, immunity and life of people, and the quality of the water determines the health. Mineral water is toughed by containing minerals required by human body. Medical stone is a natural silicate mineral, which is a composite mineral or medical rock that is non-toxic and harmless to living beings and has a certain biological activity. The main chemical components of the medical stone are inorganic aluminosilicate, including SiO2、Al2O3、Fe2O3、FeO、MgO、CaO、K2O、Na2O、TiO2、P2O5、MnO, etc., and all major elements required by animals, such as K, na, ca, mg, cu, mo, etc., trace elements and rare earth elements, about 58 kinds of the medical stone. The medical stone can dissolve more than 30 mineral elements which are beneficial to the life and health of human beings in water. The dissolved element has activity and is easy to be absorbed by human body, thus being an inorganic nutrient solution which is comprehensive and complete. The Maifanitum can adsorb, decompose and remove various harmful substances such as amine, mercury, chlorine, cadmium, cyanogen, staphylococcus albus, bacteria, and various germs. The medical stone also has strong adsorption effect on harmful substances such as heavy metal ions Pb, hg, cr, cd, as organic matters, viruses and the like in water, and can adsorb more than 95% on escherichia coli. Therefore, the research of mineralizing and preparing water by medical stone has long been carried out. The existing preparation technology of medical stone mineral water mainly extends around three directions of instant dissolution, natural spring water utilization and device production, and concretely comprises the following steps of taking vinegar Liu Suanshui solution as a solvent, mixing medical stone powder with more than 300 meshes with acetic acid according to the proportion of 0.4815 g to 0.015g, adding 250mL of purified water for 5 minutes to prepare mineral water, and preparing the mixture into a concentrated tablet which is convenient to carry, wherein the core is that the mineral dissolution is accelerated by a chemical solvent. However, the technology relies on vinegar Liu Suanhua to dissolve quickly, although the time is shortened, exogenous chemical substances are introduced, the hidden danger of taste influence and long-term drinking safety exists, the problem of insufficient balance between dissolution and safety exists due to the fact that heavy metal adsorption capacity is not mentioned, and the problem of resource waste is caused due to the fact that fine powder is dissolved quickly but is blocked easily. In the aspect of natural spring water mineralization technology, for example, chinese patent CN1209968A proposes that natural medical stone Dan Quanshui of Nameman flag mountain is adopted, filtered and sterilized by a medical stone particle filter layer and then packaged, or the medical stone is crushed by high-speed dynamic stirring and then soaked in water statically, and the natural medical stone water source and the simple physical treatment are relied on. However, the technology relies on natural spring water, is greatly limited by regions, the granularity is not controlled during artificial soaking, and 300-mesh fine powder is easy to cause turbidity of water quality. In the aspect of the mineralization technology of the device, for example, a pipeline device of 'medical stone sedimentation tank-storage tank-filter tank (medical stone and active carbon building block) -electric heating auxiliary tank-index test tank' is designed in China patent CN203173932U, mineralization is realized through heating and a multi-stage tank body, but mineral dissolution fluctuation is +/-18%, mineralization stability is low, resource utilization rate is low, and the adsorption capacity of the blocky medical stone needs to be replaced only by 60%, so that resource waste is caused. Chinese patent CN87211620U takes a clay and medical stone powder mixed-burning shell as a core, an electric heater is arranged in the shell to boil medical stone blocks and water to prepare water, and the household miniaturization equipment is emphasized, but the mineralization efficiency is low, the single water preparation quantity only meets the personal requirement, and the boiling process is easy to cause the volatilization loss of partial mineral substances (such as selenium). Therefore, there is still a need to develop a new method for preparing functional mineral water by medical stone, which combines the problems of purification and dissolution perfor