Water-saving type reverse-osmosis pure water production method

Abstract

The invention relates to a water-saving type reverse-osmosis pure water production method and belongs to the technical field of water treatment. The method comprises steps as follows: firstly, tap water is filtered through quartz sand, and produced water obtained through sand filtration is sent to an adsorption filter material to be filtered; water discharged from the adsorption filter material is sent to a reverse-osmosis membrane to be filtered; the adsorption filter material comprises components as follows: volcanic rock, modified activated carbon, activated aluminum oxide, kaolin clay and cation exchange resin. The tap water is pretreated through filter sand, and throughput of the reverse-osmosis membrane can be kept under the condition that smaller discharge of reverse-osmosis concentrated water is kept.

Description

Technical field

[0001] The invention involves a water -saving reverse osmosis pure water production method, especially the reverse osmosis pure water production method in household water purification equipment, which is a water treatment technology field. Background technique

[0002] The water -making process of the household pure water machine is mainly through a certain pressure on the water through the reverse osmosis membrane, so that the mineral elements of water molecules and ion state through a layer of reverse osmosis membrane, and most of the inorganic salts that dissolve in the water (Including heavy metals) organic matter, bacteria, viruses, etc. cannot pass the reverse osmosis membrane through the reverse osmosis membrane, thereby strictly separate through pure water and concentrated water that cannot be passed.One -millionth of silk.

[0003] However, in the process of reverse osmosis pure water, more thick water is discharged from the thick water side to reduce t...

Examples

Embodiment 1

[0022] The described modified activated carbon is prepared by the following methods:

[0023] According to the weight of the weight, take 60 coconut fiber fiber, crushed it to fines, and mix with 20 sodium hydroxide, water 10 copies and 20 copies of ethanol; then place the mixture in a tube furnace, nitrogenIn the atmosphere, the parameters of the carbonization steps are: 10 ° C / min increased, carbonization temperature is 1200 ° C, carbonization time is 3 hours; after cooling, use the citric acid solution with 5%of the mass concentration, then use it with a 5%citric acid solution, and then use it with the quality concentration of 5%.Pure water was washed to neutral. After drying, grinding to obtain modified activated carbon.

[0024] Example 2

Embodiment 2

[0026] The described modified activated carbon is prepared by the following methods:

[0027] According to the weight, 80 copies of coconut fruit fiber fiber are crushed into fines, and then mixed with 25 sodium hydroxide, water 20 copies and 30 copies of ethanol;In the atmosphere, the parameters of the carbonization steps are: 10 ° C / min increased, carbonization temperature is 1200 ° C, and carbonization time is 5 hours; after cooling, use the citric acid solution with a citric acid solution with a mass concentration of 5%, and then use it with the quality concentration of 5%.Pure water was washed to neutral. After drying, grinding to obtain modified activated carbon.

[0028] Example 3

Embodiment 3

[0030] The described modified activated carbon is prepared by the following methods:

[0031] According to the weight, 70 copies of coconut fruit fiber are taken, crushed into fines, and then mixed with 22 sodium hydroxide, 15 copies and 25 copies of ethanol;In the atmosphere, the parameters of the carbonization steps are: 4 ° C / min increased, carbonization temperature is 1150 ° C, carbonization time is 4 hours; after cooling, use the citric acid solution with a citrate solution with a mass concentration of 5%, and then use it with the quality concentration of 5%.Pure water was washed to neutral. After drying, grinding to obtain modified activated carbon.

[0032] Comparison example 1

Technical field

[0001] The invention involves a water -saving reverse osmosis pure water production method, especially the reverse osmosis pure water production method in household water purification equipment, which is a water treatment technology field. Background technique

[0002] The water -making process of the household pure water machine is mainly through a certain pressure on the water through the reverse osmosis membrane, so that the mineral elements of water molecules and ion state through a layer of reverse osmosis membrane, and most of the inorganic salts that dissolve in the water (Including heavy metals) organic matter, bacteria, viruses, etc. cannot pass the reverse osmosis membrane through the reverse osmosis membrane, thereby strictly separate through pure water and concentrated water that cannot be passed.One -millionth of silk.

[0003] However, in the process of reverse osmosis pure water, more thick water is discharged from the thick water side to reduce t...

Examples

Embodiment 1

[0022] The described modified activated carbon is prepared by the following methods:

[0023] According to the weight of the weight, take 60 coconut fiber fiber, crushed it to fines, and mix with 20 sodium hydroxide, water 10 copies and 20 copies of ethanol; then place the mixture in a tube furnace, nitrogenIn the atmosphere, the parameters of the carbonization steps are: 10 ° C / min increased, carbonization temperature is 1200 ° C, carbonization time is 3 hours; after cooling, use the citric acid solution with 5%of the mass concentration, then use it with a 5%citric acid solution, and then use it with the quality concentration of 5%.Pure water was washed to neutral. After drying, grinding to obtain modified activated carbon.

[0024] Example 2

Embodiment 2

[0026] The described modified activated carbon is prepared by the following methods:

[0027] According to the weight, 80 copies of coconut fruit fiber fiber are crushed into fines, and then mixed with 25 sodium hydroxide, water 20 copies and 30 copies of ethanol;In the atmosphere, the parameters of the carbonization steps are: 10 ° C / min increased, carbonization temperature is 1200 ° C, and carbonization time is 5 hours; after cooling, use the citric acid solution with a citric acid solution with a mass concentration of 5%, and then use it with the quality concentration of 5%.Pure water was washed to neutral. After drying, grinding to obtain modified activated carbon.

[0028] Example 3

Embodiment 3

[0030] The described modified activated carbon is prepared by the following methods:

[0031] According to the weight, 70 copies of coconut fruit fiber are taken, crushed into fines, and then mixed with 22 sodium hydroxide, 15 copies and 25 copies of ethanol;In the atmosphere, the parameters of the carbonization steps are: 4 ° C / min increased, carbonization temperature is 1150 ° C, carbonization time is 4 hours; after cooling, use the citric acid solution with a citrate solution with a mass concentration of 5%, and then use it with the quality concentration of 5%.Pure water was washed to neutral. After drying, grinding to obtain modified activated carbon.

[0032] Comparison example 1

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