CN210457583U - Nickel-containing wastewater treatment tower - Google Patents
Nickel-containing wastewater treatment tower Download PDFInfo
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- CN210457583U CN210457583U CN201920133349.0U CN201920133349U CN210457583U CN 210457583 U CN210457583 U CN 210457583U CN 201920133349 U CN201920133349 U CN 201920133349U CN 210457583 U CN210457583 U CN 210457583U
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Abstract
The utility model belongs to nickeliferous metal waste water's processing field, it is concrete, the utility model provides a nickeliferous waste water treatment tower, including many reaction columns, through pipeline and valve interconnect between the reaction column, the vertical setting of reaction column, its inner chamber top-down is equipped with out water zone, reaction zone and water distribution district in proper order, the reaction column corresponds the position of play water zone is equipped with the delivery port rather than the intercommunication, the intussuseption of reaction zone is filled with chelate resin, be equipped with the water-locator in the water distribution district, the reaction column be equipped with the water inlet of water-locator intercommunication for with nickeliferous waste water evenly distributed in the reaction column. The utility model provides a nickel-containing wastewater treatment tower is as novel containing the important device on the metal ion waste water treatment line, and simple structure is small, can make effluent treatment plant overall structure compact, and direct mount is peripheral at the production line of industrial waste water to realize online circulation mode.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, concretely relates to nickeliferous waste water treatment tower.
Background
In the field of nickel-containing wastewater treatment, the currently commonly adopted technology is a chemical precipitation method, namely after the pH value of wastewater is adjusted by adding medicaments such as acid and alkali, medicaments such as flocculating agent and the like are added to flocculate and precipitate nickel metal, and the generated heavy metal sludge is treated as hazardous waste in a harmless manner.
At present, some large electroplating parks adopt emerging technologies to solve the problem of wastewater treatment, for example, wastewater pH value is firstly adjusted, then flocculation precipitation filtration is carried out, and then an RO membrane is used for treatment, but the RO membrane has high cost and low efficiency of adsorbing metal ions, and can not be reused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a replace RO membrane to carry out the absorption of metal nickel ion in the nickeliferous waste water, can carry out regeneration cycle moreover and use to practice thrift manufacturing cost greatly, satisfy the nickeliferous waste water treatment tower of market demand.
In order to realize the purpose, the utility model adopts the technical scheme that: the utility model provides a nickel-containing wastewater treatment tower, includes many reaction columns, through pipeline and valve interconnect between the reaction column, the vertical setting of reaction column, its inner chamber top-down are equipped with out water zone, reaction zone and water distribution district in proper order, the reaction column corresponds the position of going out the water zone is equipped with the delivery port rather than the intercommunication, the reaction zone intussuseption is filled with chelate resin, be equipped with the water-locator in the water distribution district, be equipped with on the reactor with the water inlet of water-locator intercommunication for with nickel-containing waste water evenly distributed in the reaction column.
Adopt above-mentioned technical scheme, the beneficial effects of the utility model are that: specifically, the interior of the reaction tower is divided into three parts, namely a hemispherical water distribution area at the lower part of the reaction tower, a reaction area at the middle part of the reaction tower and a hemispherical water outlet area at the upper part of the reaction tower. The utility model provides a nickeliferous waste water treatment tower is through set up in the water inlet in reaction tower bottom gets into the water distribution district of reaction tower, water distribution district are provided with special stainless steel water distributor, can with nickeliferous waste water evenly distributed in the reaction district of reaction tower. In a proper pressure interval, the novel chelating resin filled in the middle part of the reaction tower is in a completely fluidized state and can be fully contacted with the nickel-containing wastewater. A homogeneous reaction state is formed. The reaction columns are connected with each other through pipelines and valves, so that multiple purposes and one standby mode can be realized, namely, the reaction columns are connected through pipelines and electric valves to form a mode that a plurality of reaction columns can be randomly combined and connected in series, and one reaction column is standby. Each electric valve is connected with a master control PLC program through a signal wire, and the opening and closing of each valve are realized through the programming of the PLC program so as to realize the series operation of a plurality of reaction columns. When the reaction columns connected in series are in normal operation, the spare reaction columns are backwashed simultaneously. Namely, the effect of simultaneous operation of operation and desorption is realized.
On the basis of the technical scheme, the utility model discloses can also have following further specific selection or optimization selection.
Specifically, the chelating resin is a weakly acidic cation exchange resin. The resin is in a sodium-type wet spherical shape. The main structure is macroporous cross-linked polystyrene, which is structurally combined with iminodiacetic acid functional groups. The method has higher adsorption efficiency aiming at nickel ions in the electroplating wastewater, and the exchange adsorption capacity can reach 40 g/L. Compared with the conventional resin, the modified resin has the advantages of large adsorption capacity, large specific surface area, difficult breakage, long service life (about 5 years), and the like.
Specifically, a transparent observation window is arranged on the wall body of the reaction zone. The observation window is used for observing the reaction condition of the nickel-containing wastewater in the column body. Specifically, a safety valve for limiting the pressure in the reaction column is arranged on the top wall of the water outlet zone. The pressure bearing of the reaction column body is designed to be 0.3MPa, the top of the reaction column body is provided with a safety valve, and when the internal pressure of the reaction column is greater than 0.25MPa, the safety valve automatically releases pressure.
The reaction column is characterized by comprising a regeneration device, wherein the regeneration device comprises an acid-proof pump, a water inlet of the acid-proof pump is communicated with a medicine box filled with a desorption agent, and a water outlet of the acid-proof pump is communicated with a water outlet of the reaction column, so that the reaction column is backflushed.
The device comprises a reaction column, a desorption agent tank, a water inlet of the desorption agent tank, a water outlet of the desorption agent tank, a water inlet of the alkali-resistant pump, a water outlet of the reaction column and a water outlet of the reaction column.
Furthermore, the utility model also provides an application method of above-mentioned nickel-containing wastewater treatment tower, it includes following step:
1) introducing the pretreated nickel-containing wastewater into the nickel-containing wastewater treatment tower for treatment, wherein at least one reaction column is in a standby state, and the rest reaction columns are sequentially connected in series;
2) and backwashing the reaction column in the standby state by using the regeneration device and the modification device in sequence, so as to regenerate the reaction column in the standby state.
Specifically, the desorption agent is a sulfuric acid aqueous solution with the mass concentration of 5-8%. An aqueous sulfuric acid solution having a mass concentration of 6% is preferred.
Specifically, the modifier is a sodium hydroxide aqueous solution with the mass concentration of 2-5%. An aqueous solution of sodium hydroxide having a mass concentration of 4% is preferred.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a nickel-containing wastewater treatment tower is as novel containing the important device on the metal ion waste water treatment line, and simple structure is small, can make effluent treatment plant overall structure compact, and direct mount is peripheral at the production line of industrial waste water to realize online circulation mode. Meanwhile, the operation and maintenance of the equipment can be simultaneously carried out in a multi-use one-standby mode without shutdown treatment, so that the production efficiency is improved. In addition, desorption liquid desorbed from acid in the regeneration stage is concentrated for multiple times, and then is positioned at the rear end and can be directly recycled to the semi-gloss nickel plating production section of the production line, so that the recycling of raw materials is realized, and the production cost is further reduced.
Drawings
FIG. 1 is a schematic structural diagram of a reaction column in a nickel-containing wastewater treatment tower provided by the present invention.
In the figure: 1. a water outlet area; 2. a reaction zone; 3. a water distribution area; 11. a water outlet; 12. a safety valve; 21. A transparent viewing window; 31. a water inlet.
Detailed Description
For a better understanding of the present invention, the contents of the present invention will be further explained below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the following embodiments.
The utility model provides a nickel-containing wastewater treatment tower, including many reaction columns, through pipeline and valve interconnect between the reaction column, reaction column inner chamber top-down includes effluent zone 1, reaction zone 2 and water distribution district 3 in proper order, effluent zone 1 is equipped with the delivery port 11 with outside intercommunication, reaction zone 2 packs has chelate resin, water distribution district 3 is equipped with the water distributor and rather than the water inlet 31 of intercommunication for with nickel-containing waste water evenly distributed in the reaction column.
Preferably, the interior of the reaction tower is divided into three parts, namely a hemispherical water distribution area at the lower part of the reaction tower, a reaction area at the middle part of the reaction tower and a hemispherical water outlet area at the upper part of the reaction tower. Preferably, the water outlet area 1 is also provided with a water distributor, a glass fiber reinforced plastic water distribution plate is arranged on the water distribution panel, and a special water distribution device is arranged on the water distribution plate by opening holes in one mode, so that uniform water distribution is realized. The upper part of the water distribution plate is provided with a water outlet collecting area which is provided with a funnel-shaped water outlet device. The produced water can uniformly flow out through the central funnel without bias flow phenomenon.
Preferably, the chelating resin is a weakly acidic cation exchange resin. The resin is in a sodium-type wet spherical shape. The main structure is macroporous cross-linked polystyrene, which is structurally combined with iminodiacetic acid functional groups. The method has higher adsorption efficiency aiming at nickel ions in the electroplating wastewater, and the exchange adsorption capacity can reach 40 g/L. Compared with the conventional resin, the modified resin has the advantages of large adsorption capacity, large specific surface area, difficult breakage, long service life (about 5 years), and the like.
Preferably, the wall of the reaction zone 2 is provided with a transparent viewing window 21. The observation window is used for observing the reaction condition of the nickel-containing wastewater in the column body. Specifically, the water outlet zone 1 is provided with a safety valve 12 for limiting the pressure in the reaction column. The pressure bearing of the reaction column body is designed to be 0.3MPa, the top of the reaction column body is provided with a safety valve, and when the internal pressure of the reaction column is greater than 0.25MPa, the safety valve automatically releases pressure. Specifically, a support frame is further arranged on the wall body of the reaction area 2 and used for fixing the reaction column in the reaction tower. The wall body of the reaction area 2 is also provided with at least one discharge opening communicated with the interior of the reaction area, and the discharge opening is used for filling or discharging the chelating resin filled in the reaction area 2.
Preferably, the device further comprises a regeneration device, wherein the regeneration device comprises an acid-proof pump, a water inlet of the acid-proof pump is communicated with a medicine box filled with a desorption agent, and a water outlet of the acid-proof pump is communicated with a water outlet 11 of the reaction column, so that the reaction column is backflushed.
Preferably, the device further comprises a modification device, wherein the modification device comprises an alkali-resistant pump, a water inlet of the alkali-resistant pump is communicated with a medicine box filled with a desorption agent, and a water outlet of the alkali-resistant pump is communicated with a water outlet 11 of the reaction column, so that the reaction column is backflushed.
Furthermore, the utility model also provides an application method of above-mentioned nickel-containing wastewater treatment tower, it includes following step:
1) introducing the pretreated nickel-containing wastewater into the nickel-containing wastewater treatment tower for treatment, wherein at least one reaction column is in a standby state, and the rest reaction columns are sequentially connected in series;
2) and backwashing the reaction column in the standby state by using the regeneration device and the modification device in sequence, so as to regenerate the reaction column in the standby state.
Specifically, the desorption agent is a sulfuric acid aqueous solution with the mass concentration of 5-8%. An aqueous sulfuric acid solution having a mass concentration of 6% is preferred.
Specifically, the modifier is a sodium hydroxide aqueous solution with the mass concentration of 2-5%. An aqueous solution of sodium hydroxide having a mass concentration of 4% is preferred.
Example (b):
as shown in figure 1, the utility model provides a nickel-containing wastewater treatment tower through set up in the water inlet 31 of reaction tower bottom makes nickeliferous waste water get into the water distribution district 3 of reaction tower, water distribution district 3 are provided with special stainless steel water distributor, can with nickeliferous waste water evenly distributed in the reaction district of reaction tower. The water distributor is purchased from a commercial product. In a proper pressure interval, the novel chelating resin filled in the middle part of the reaction tower is in a completely fluidized state and can be fully contacted with the nickel-containing wastewater. A homogeneous reaction state is formed. The reaction columns are connected with each other through pipelines and valves, so that multiple purposes and one standby mode can be realized, namely, the reaction columns are connected through pipelines and electric valves to form a mode that a plurality of reaction columns can be randomly combined and connected in series, and one reaction column is standby. Each electric valve is connected with a master control PLC program through a signal wire, and the opening and closing of each valve are realized through the programming of the PLC program so as to realize the series operation of a plurality of reaction columns. When the reaction columns connected in series are in normal operation, the spare reaction columns are backwashed simultaneously. Namely, the effect of simultaneous operation of operation and desorption is realized.
After the novel chelate resin is saturated in adsorption, the novel chelate resin needs to be regenerated to restore the adsorption activity. A6% sulfuric acid solution is used as a desorption agent, the desorption agent is stored in a medicine box, and the desorption agent is pumped into the reaction column from top to bottom along a water outlet of the reaction column from a pipeline at the upper part of the reaction column through an acid-proof pump. And desorbing the nickel adsorbed on the novel chelating resin group through full contact reaction with the novel chelating resin in the reaction column. Forming a nickel sulfate compound with sulfate in the desorbent. The desorption time is adjusted according to the adsorption amount. Preparing a desorption agent once, and desorbing four to five reaction columns at most. Except for preparing 6% sulfuric acid solution for the first time, 2% concentrated sulfuric acid needs to be added in advance before the next desorption. After repeated use for many times, the nickel content in the desorption agent can be accumulated to a large extent. When the nickel content in the desorption agent reaches more than 20g/L, the desorption agent can be recycled to the semi-gloss nickel plating process section of the production line.
After desorption, the chelating resin needs to be modified with sodium hydroxide. And (3) converting the chelating resin into a sodium form from a hydrogen form. And the sodium hydroxide solution is stored in a medicine box, and the modifier is pumped into the reaction column from the water outlet of the reaction column from top to bottom through an alkali-resistant pump. The novel chelating resin is converted into a sodium type through sufficient contact reaction with the novel chelating resin in the reaction column.
The reaction column in the standby state is a state in which the reaction columns are not connected in series to each other to perform adsorption treatment on the nickel-containing wastewater, but is communicated with the regeneration device and the modification device to perform regeneration so as to restore the adsorption capacity of the reaction columns on the metallic nickel ions in the nickel-containing wastewater.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. The utility model provides a nickel-containing wastewater treatment tower, its characterized in that includes many reaction columns, through pipeline and valve interconnect between the reaction column, the vertical setting of reaction column, its inner chamber top-down are equipped with out pool (1), reaction zone (2) and water distribution district (3) in proper order, the position that corresponds of play pool (1) is equipped with delivery port (11) rather than the intercommunication, reaction zone (2) intussuseption is filled with chelate resin, be equipped with the water-locator in water distribution district (3), be equipped with on the reaction column with water inlet (31) of water-locator intercommunication.
2. The nickel-containing wastewater treatment tower according to claim 1, characterized in that: the chelating resin is weak acid cation exchange resin.
3. The nickel-containing wastewater treatment tower according to claim 2, characterized in that: and a transparent observation window (21) is arranged on the wall body of the reaction area (2).
4. The nickel-containing wastewater treatment tower according to claim 1, characterized in that: and a safety valve (12) for limiting the pressure in the reaction column is arranged on the top wall of the water outlet zone (1).
5. The nickel-containing wastewater treatment tower according to any one of claims 1 to 4, characterized in that: still include regenerating unit, regenerating unit includes the acid-proof pump, the water inlet of acid-proof pump with be equipped with the medical kit intercommunication of desorbent, the delivery port of acid-proof pump with delivery port (11) intercommunication of reaction column.
6. The nickel-containing wastewater treatment tower according to claim 5, characterized in that: the device comprises a reaction column, and is characterized by further comprising a modification device, wherein the modification device comprises an alkali-resistant pump, a water inlet of the alkali-resistant pump is communicated with a medicine box filled with a desorption agent, and a water outlet of the alkali-resistant pump is communicated with a water outlet (11) of the reaction column.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920133349.0U CN210457583U (en) | 2019-01-25 | 2019-01-25 | Nickel-containing wastewater treatment tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920133349.0U CN210457583U (en) | 2019-01-25 | 2019-01-25 | Nickel-containing wastewater treatment tower |
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| CN210457583U true CN210457583U (en) | 2020-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626508A (en) * | 2019-01-25 | 2019-04-16 | 重庆耐德水处理科技有限公司 | A kind of nickel-containing waste water treating column and its application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626508A (en) * | 2019-01-25 | 2019-04-16 | 重庆耐德水处理科技有限公司 | A kind of nickel-containing waste water treating column and its application method |
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