CN104628189A - Combined water treatment method for synchronously removing sulfate, hardness and total dissolved solids - Google Patents
Combined water treatment method for synchronously removing sulfate, hardness and total dissolved solids Download PDFInfo
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- CN104628189A CN104628189A CN201510078866.9A CN201510078866A CN104628189A CN 104628189 A CN104628189 A CN 104628189A CN 201510078866 A CN201510078866 A CN 201510078866A CN 104628189 A CN104628189 A CN 104628189A
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Abstract
The invention provides a combined water treatment method for synchronously removing sulfate, hardness and total dissolved solids. The combined water treatment method comprises the following steps of removing sulfate in water by using special magnetic resin, and carrying out solid-liquid separation to obtain first-grade purified water; adding a hardness removing agent into the first-grade purified water to coagulate, and removing a sediment through contact filtration to obtain second-grade purified water; and carrying out fine filtration on the second-grade purified water, and sterilizing to obtain the product water. The combined water treatment method can be used for synchronously removing sulfate, total hardness and total dissolved solids, has the characteristics of convenience in use, flexibility in operation, wide application range and the like, and has relatively good popularization and application prospects.
Description
Technical field
The invention belongs to field of water treatment equipment, particularly the Combined water treatment process of a kind of synchronous removal vitriol, hardness and total dissolved solidss.
Background technology
Much higher hard or too lowly all can affect our HUMAN HEALTH in water, also can make troubles to daily life simultaneously.Such as, when washing with hard water can and soap response produce infusible precipitate, except affecting washing effect, clothes fiber also can be made to harden become fragile fragile, can puckery when having a bath wash hair with hard water.In existing " drinking water sanitary standard " (GB5749-2006), in regulation tap water, total hardness content should lower than 450mg/L (with CaCO
3meter).And in actual underground water, except total hardness is too high, also can and deposit the quality problems such as the too high and total dissolved solidss too high levels of sulphate content.
Apply for hardness minimizing technology in drinking water treatment field at present and study relatively many, such as various types of softening medicament and corresponding treatment facility or device, and the removal difficulty of vitriol is higher, effectively can be mainly reverse osmosis, electrodialysis and ion-exchange by approach at present in actual water treatment, but also deposit the problems such as use cost is high, waste water productive rate is large in actual applications; Total dissolved solidss are indexs that another is difficult to effectively control, and need equally to be controlled by methods such as reverse osmosis, electrodialysis and ion-exchanges.Therefore, all exceed standard for indexs such as vitriol, total hardness, total dissolved solidss but the not high source water of the numerical value that exceeds standard, need that research and development are a kind of can synchronously remove above-mentioned material and lower-cost water treatment method.
Summary of the invention
Goal of the invention: the object of the present invention is to provide that a kind of construction cost is low, working cost is low, safety and synchronously can remove the water treatment method of vitriol, total hardness and total dissolved solidss.
Technical scheme: the Combined water treatment process that the invention provides a kind of synchronous removal vitriol, hardness and total dissolved solidss, comprises the following steps:
(1) utilize the vitriol in special magnetic resin removal water, obtain first class purification water through solid-liquid separation;
(2) drop in first class purification water except hardness medicament coagulation, contact percolation is removed throw out and is obtained secondary purification water;
(3) secondary purification water through secondary filter, sterilize and obtain product water.
In step (1), special magnetic resin is magnetic anion exchange resin, and its cation exchange groups is bicarbonate radical.
In step (1), the treating processes that the vitriol in water removed by special magnetic resin adopts upward flow direction; Meanwhile, synchronously extract exhausted resin, add the rear resin of regeneration, the total volume of resin in system is kept relative stability;
In step (1), the renovation process of special magnetic resin is: the sodium hydrogen carbonate solution process 15-45min adopting concentration 5%-10%.
In step (2), except hardness medicament is sodium hydroxide agent, its dosage is make the pH of secondary purification water between 8.1-8.4.
In step (2), contact percolation adopts the filter material layer be made up of the homogeneous filtering material of particle diameter 0.9-1.35mm, and filter material layer thickness is at more than 1.4m.
In step (3), secondary filter adopts the quartz sand filtering layer of the quartz sand composition of particle diameter 0.5-0.8mm, and quartz sand thickness of filter bed is 0.3-0.5m.
In step (3), sterilization adopts liquid chlorine or sodium hypochlorite, and sterilizing agent dosage is between 0.5-1.5mg/L.
Beneficial effect: the water treatment method synchronously can removing vitriol, total hardness and total dissolved solidss provided by the invention has that floor space is little, easy to use, flexible operation, applied widely, there is the feature of effluent quality good popularizing application prospect can be ensured preferably.
Specifically, the present invention has following outstanding advantage relative to prior art:
(1) method provided by the present invention synchronously can remove vitriol, total hardness and the total dissolved solidss in water, and all remarkable existing processing cost of processing cost, waste water productive rate, and effluent quality is more conducive to HUMAN HEALTH.
(2) novel magnetic ion exchange resin is adopted in removing sulfate in present method, and cation exchange groups is bicarbonate radical, thus after sulfate radical is exchanged removal, ion under displacement is bicarbonate radical, and its raising being follow-up total hardness removal efficiency creates condition, and significantly can reduce the content of total dissolved solidss in water simultaneously;
(3) use in present method saturated after resin adopt sodium hydrogen carbonate solution to regenerate, thus while effective guarantee resin regeneration effect, and effectively the cation exchange groups of resin can be replaced into bicarbonate radical.In addition, the safe handling of the regenerated liquid after using adopts common milk of lime, thus can dispose regeneration waste liquid safely, economically, avoids secondary pollution.
(4) present method take sodium hydroxide as the softening medicament of core, thus can reduce sedimentary growing amount as much as possible, for the employing of subsequent touch filter type provides primary condition.And in filtration procedure homogeneous filtering material select and the setting of thickness is also determine according to the characteristic except the reaction of hardness medicament.
Embodiment
Embodiment 1
The Combined water treatment process of synchronous removal vitriol, hardness and total dissolved solidss, comprises the following steps:
(1) utilize the vitriol in special magnetic resin removal water, obtain first class purification water through solid-liquid separation; Wherein, special magnetic resin is magnetic anion exchange resin, and its cation exchange groups is bicarbonate radical; The treating processes that the vitriol in water removed by special magnetic resin adopts upward flow direction; Meanwhile, synchronously extract exhausted resin, add the rear resin of regeneration, the total volume of resin in system is kept relative stability; The renovation process of special magnetic resin is: the sodium hydrogen carbonate solution process 45min adopting concentration 5%;
(2) drop in first class purification water except hardness medicament coagulation, contact percolation is removed throw out and is obtained secondary purification water; Wherein, except hardness medicament is sodium hydroxide agent, its dosage is make the pH of secondary purification water between 8.1-8.4; Contact percolation adopts the filter material layer be made up of the homogeneous filtering material of particle diameter 0.9-1.35mm, and filter material layer thickness is at 2.0m;
(3) secondary purification water through secondary filter, sterilize and obtain product water; Wherein, secondary filter adopts the quartz sand filtering layer of the quartz sand composition of particle diameter 0.5-0.8mm, and quartz sand thickness of filter bed is 0.3m; Sterilization adopts liquid chlorine or sodium hypochlorite, and sterilizing agent dosage is between 1.5mg/L.
For verifying the usefulness of this underground water except hardness device, in the usefulness checking that Kashi city water factory is correlated with.The water quality situation of the former water of duration of test is as shown in table 1.
Table 1 raw water quality parameter detecting result
Water quality after check processing, the results are shown in Table 2.
Table 2 processes effluent quality parameter detecting result
Embodiment 2
The Combined water treatment process of synchronous removal vitriol, hardness and total dissolved solidss, comprises the following steps:
(1) utilize the vitriol in special magnetic resin removal water, obtain first class purification water through solid-liquid separation; Wherein, special magnetic resin is magnetic anion exchange resin, and its cation exchange groups is bicarbonate radical; The treating processes that the vitriol in water removed by special magnetic resin adopts upward flow direction; Meanwhile, synchronously extract exhausted resin, add the rear resin of regeneration, the total volume of resin in system is kept relative stability; The renovation process of special magnetic resin is: the sodium hydrogen carbonate solution process 30min adopting concentration 8%;
(2) drop in first class purification water except hardness medicament coagulation, contact percolation is removed throw out and is obtained secondary purification water; Wherein, except hardness medicament is sodium hydroxide agent, its dosage is make the pH of secondary purification water between 8.1-8.4; Contact percolation adopts the filter material layer be made up of the homogeneous filtering material of particle diameter 0.9-1.35mm, and filter material layer thickness is at 1.8m;
(4) secondary purification water through secondary filter, sterilize and obtain product water; Wherein, secondary filter adopts the quartz sand filtering layer of the quartz sand composition of particle diameter 0.5-0.8mm, and quartz sand thickness of filter bed is 0.5m; Sterilization adopts liquid chlorine or sodium hypochlorite, and sterilizing agent dosage is between 0.5mg/L.
For verifying the usefulness of this underground water except hardness device, in the usefulness checking that Kashi city water factory is correlated with.The water quality situation of the former water of duration of test is as shown in table 3.
Table 3 raw water quality parameter detecting result
Water quality after check processing, the results are shown in Table 4.
Table 4 processes effluent quality parameter detecting result
Embodiment 3
The Combined water treatment process of synchronous removal vitriol, hardness and total dissolved solidss, comprises the following steps:
(1) utilize the vitriol in special magnetic resin removal water, obtain first class purification water through solid-liquid separation; Wherein, special magnetic resin is magnetic anion exchange resin, and its cation exchange groups is bicarbonate radical; The treating processes that the vitriol in water removed by special magnetic resin adopts upward flow direction; Meanwhile, synchronously extract exhausted resin, add the rear resin of regeneration, the total volume of resin in system is kept relative stability; The renovation process of special magnetic resin is: the sodium hydrogen carbonate solution process 15min adopting concentration 10%;
(2) drop in first class purification water except hardness medicament coagulation, contact percolation is removed throw out and is obtained secondary purification water; Wherein, except hardness medicament is sodium hydroxide agent, its dosage is make the pH of secondary purification water between 8.1-8.4; Contact percolation adopts the filter material layer be made up of the homogeneous filtering material of particle diameter 0.9-1.35mm, and filter material layer thickness is at 1.4m;
(5) secondary purification water through secondary filter, sterilize and obtain product water; Wherein, secondary filter adopts the quartz sand filtering layer of the quartz sand composition of particle diameter 0.5-0.8mm, and quartz sand thickness of filter bed is 0.4m; Sterilization adopts liquid chlorine or sodium hypochlorite, and sterilizing agent dosage is between 1.0mg/L.
For verifying the usefulness of this underground water except hardness device, in the usefulness checking that Kashi city water factory is correlated with.The water quality situation of the former water of duration of test is as shown in table 5.
Table 5 raw water quality parameter detecting result
Water quality after check processing, the results are shown in Table 6.
Table 6 processes effluent quality parameter detecting result
Claims (8)
1. synchronously remove a Combined water treatment process for vitriol, hardness and total dissolved solidss, it is characterized in that: comprise the following steps:
(1) utilize the vitriol in special magnetic resin removal water, obtain first class purification water through solid-liquid separation;
(2) drop in first class purification water except hardness medicament coagulation, contact percolation is removed throw out and is obtained secondary purification water;
(3) secondary purification water through secondary filter, sterilize and obtain product water.
2. the Combined water treatment process of a kind of synchronous removal vitriol according to claim 1, hardness and total dissolved solidss, it is characterized in that: in step (1), special magnetic resin is magnetic anion exchange resin, and its cation exchange groups is bicarbonate radical.
3. the Combined water treatment process of a kind of synchronous removal vitriol according to claim 1, hardness and total dissolved solidss, it is characterized in that: in step (1), the treating processes that the vitriol in water removed by special magnetic resin adopts upward flow direction; Meanwhile, synchronously extract exhausted resin, add the rear resin of regeneration, the total volume of resin in system is kept relative stability.
4. the Combined water treatment process of a kind of synchronous removal vitriol according to claim 1, hardness and total dissolved solidss, it is characterized in that: in step (1), the renovation process of special magnetic resin is: the sodium hydrogen carbonate solution process 15-45min adopting concentration 5%-10%.
5. the Combined water treatment process of a kind of synchronous removal vitriol according to claim 1, hardness and total dissolved solidss, it is characterized in that: in step (2), except hardness medicament is sodium hydroxide agent, its dosage is make the pH of secondary purification water between 8.1-8.4.
6. the Combined water treatment process of a kind of synchronous removal vitriol according to claim 1, hardness and total dissolved solidss, it is characterized in that: in step (2), contact percolation adopts the filter material layer be made up of the homogeneous filtering material of particle diameter 0.9-1.35mm, and filter material layer thickness is at more than 1.4m.
7. the Combined water treatment process of a kind of synchronous removal vitriol according to claim 1, hardness and total dissolved solidss, it is characterized in that: in step (3), secondary filter adopts the quartz sand filtering layer of the quartz sand composition of particle diameter 0.5-0.8mm, and quartz sand thickness of filter bed is 0.3-0.5m.
8. the Combined water treatment process of a kind of synchronous removal vitriol according to claim 1, hardness and total dissolved solidss, it is characterized in that: in step (3), sterilization adopts liquid chlorine or sodium hypochlorite, and sterilizing agent dosage is between 0.5-1.5mg/L.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597512A (en) * | 2016-01-20 | 2016-05-25 | 西北大学 | Regenerating method of flue gas desulfurization agent |
| CN105498539B (en) * | 2016-01-20 | 2017-06-16 | 西北大学 | A kind of method for recycling of fume desulfurizing agent |
| CN111573958A (en) * | 2020-06-30 | 2020-08-25 | 西安工业大学 | Treatment and recycling method for biochemical tail water resin desorption liquid |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973657A (en) * | 2010-10-27 | 2011-02-16 | 河海大学 | Processing device and processing method for removing nitrate from ground water |
| CN103880215A (en) * | 2014-03-24 | 2014-06-25 | 河海大学 | Integral water purifying device for removing hardness of underground water |
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2015
- 2015-02-13 CN CN201510078866.9A patent/CN104628189B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973657A (en) * | 2010-10-27 | 2011-02-16 | 河海大学 | Processing device and processing method for removing nitrate from ground water |
| CN103880215A (en) * | 2014-03-24 | 2014-06-25 | 河海大学 | Integral water purifying device for removing hardness of underground water |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597512A (en) * | 2016-01-20 | 2016-05-25 | 西北大学 | Regenerating method of flue gas desulfurization agent |
| CN105597512B (en) * | 2016-01-20 | 2017-06-16 | 西北大学 | A kind of renovation process of fume desulfurizing agent |
| CN105498539B (en) * | 2016-01-20 | 2017-06-16 | 西北大学 | A kind of method for recycling of fume desulfurizing agent |
| CN111573958A (en) * | 2020-06-30 | 2020-08-25 | 西安工业大学 | Treatment and recycling method for biochemical tail water resin desorption liquid |
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