CN2920979Y - Reaction system for treating sewage containing chromium by gas-liquid static mixing reduction method - Google Patents
Reaction system for treating sewage containing chromium by gas-liquid static mixing reduction method Download PDFInfo
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- CN2920979Y CN2920979Y CN 200620110925 CN200620110925U CN2920979Y CN 2920979 Y CN2920979 Y CN 2920979Y CN 200620110925 CN200620110925 CN 200620110925 CN 200620110925 U CN200620110925 U CN 200620110925U CN 2920979 Y CN2920979 Y CN 2920979Y
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Abstract
The utility model discloses a reaction system adopting the method of liquid-gas static mixture deoxidization to process the wastewater containing chrome, which comprises a waste water storage tank, an infusion pump, a liquid-gas static mixture reactor, a liquid and gas flowmeter and the correlative connection pipelines. The waste water storage tank are connected with the liquid-gas static mixture reactor by the infusion pump and the infusion pipes; the train pipes of the liquid-gas static mixture reactor is connected with the wastewater storage tank; the wastewater storage has two pathway outlets, wherein one pathway outlet is connected with the liquid-gas static mixture reactor through the infusion pump to circulate, the other pathway outlet is connected with the discharge pipes. The utility model adopts the high efficiency liquid-gas static mixture device to realize the compulsory mixing reaction between the SO[2] reducing gas and the wastewater containing chrome(VI) to deoxidize the chrome(VI). Compared with the gas-liquid absorption tower, the utility model accelerates the gas-liquid transfer speed, intensifies the whole reaction process, improving the reaction efficiency, and greatly reducing the investment to the wastewater processing device and is simple structure and small volume.
Description
Technical field
The utility model method belongs to the technical field of waste water processing in the Environmental Chemical Engineering technology.
Background technology
Chromic salts is a kind of important chemical material, in its production process, except that producing the chromium slag, also to produce a large amount of chromate waste waters, if directly discharging, chromium wherein (VI) will cause serious harm to biologies such as people, animal, plants, causes material (carcinogenic, teratogenesis, cause prominent) because chromium (VI) belongs to three.For this reason, chromate waste water must can be discharged in the environment through suitable processing.
At present, biological reducing method, physisorphtion and chemical reduction method are generally adopted in the processing that contains chromium (VI) waste water.Chemical reduction method has characteristics such as processing efficiency height, treatment capacity be big, is applied aborning.Chemical reduction method is to go the chromium in the waste water (VI) is reduced into the little chromium of toxicity (III) with the material with strong reducing power, as uses SO
2Chromium in the gas reduction waste water (VI) has been obtained good effect.Make of gas that the reduction process of reductive agent carries out often in packed absorber.The effect that reduction is handled is relevant with the filler and the operating parameters of employing, and in addition, facility investment is bigger.
Summary of the invention
The purpose of this utility model is to handle the deficiency that contains the existence of chromium (VI) waste water at existing chemical reduction method, proposes a kind of static mixer of advanced person that adopts and realizes SO
2The system of reducing gas and the reduction chromium (VI) that contains chromium (VI) waste water Forced Mixing reaction has improved gas-liquid mass transfer speed greatly, and the reduction efficiency of entire reaction course is improved greatly.Simultaneously, because static mixer structure is simple, volume is little, the sewage treatment equipment investment is greatly reduced.
The technical solution of the utility model is as follows:
The entire reaction system is made up of chromate waste water storage tank, infusion pump, gas-liquid static mixing reactor, liquids and gases under meter and relevant connecting tube.The chromate waste water storage tank is connected with the gas-liquid static mixing reactor with tubing through infusion pump, the drain pipe of gas-liquid static mixing reactor connects the treating water storage tank, the treating water storage tank has two-way outlet, and one the tunnel through infusion pump circulation access gas-liquid static mixing reactor, and another road connects delivery pipe.
The working process of this reactor is as follows:
At first start infusion pump, will contain chromium (VI) waste water and be transported in the gas-liquid static mixing reactor, open air-supplying valve then, allow SO with certain flow
2Reducing gas according to stoichiometry fully in the reducing waste water flow of chromium (VI) enter the gas-liquid static mixing reactor.In reactor, the reaction of gas-liquid two-phase Forced Mixing flow in the corresponding storage tank through reacted wastewater.According to the analysis of components result, if chromium wherein (VI) is higher than discharge index, can adopt above-mentioned same method, do further processing; If be up to state standards, can directly utilize or discharge.
The gas-liquid static mixing reactor can adopt present sophisticated product in the utility model, the SV type static mixing reactor of producing as the happy Technological Economy in sky, Shanghai Development Co., Ltd etc.
Advantage of the present utility model and positively effect
The principle of the utility model utilization chemical reaction engineering proposes to adopt a kind of liquid mixer of Static Gas efficiently to realize SO
2Reducing gas with contain chromium (VI) waste water Forced Mixing, improved gas-liquid mass transfer speed greatly.Because SO
2Reducing gas is controlled by the gas-liquid rate of mass transfer for the reduction reaction process that contains chromium (VI) in chromium (VI) waste water, so compare with the Gas-Liquid Absorption tower of common employing, adopt efficiently the Static Gas liquid mixer to strengthen entire reaction course, reaction efficiency is improved greatly.Simultaneously, because static mixer structure is simple, volume is little, compares with the Gas-Liquid Absorption tower, the sewage treatment equipment investment is greatly reduced.In addition, use this reactor for treatment to contain chromium (VI) waste water, simple to operate flexibly, energy consumption is low, process cost is little, device structure is simple, easy to maintenance.The utility model method can be widely used in handling that various industries (as chromium salt production producer, Electroplate Factory, tannery) produce contains chromium toxic heavy metal ionic waste water such as (VI).
Description of drawings
Fig. 1 is the structural representation of this reactive system.
Embodiment
Referring to Fig. 1, this reactive system is formed by containing chromium (VI) waste water storage tank 1, infusion pump 2, gas-liquid static mixing reactor 4, liquid meter 3 and gas meter 8, treating water storage tank 5 and relevant connecting tube 6.The tubing that contains chromium (VI) waste water storage tank 1 is provided with infusion pump 2 and liquids and gases under meter 3, be connected with gas-liquid static mixing reactor 4, the drain pipe of gas-liquid static mixing reactor 4 connects treating water storage tank 5, treating water storage tank 5 has two-way outlet, one the tunnel through infusion pump circulation access gas-liquid static mixing reactor 4, and another road connects delivery pipe 7.
Below be example with the chromate waste water of handling the discharging of chromium salt production factory: certain chromium salt factory generally will be discharged the waste water that contains chromium (VI) 300～800mg/L in process of production, and the SV-2.3/20 type static mixing reactor that now adopts sky, Shanghai happy Technological Economy Development Co., Ltd to produce carries out gas one liquid reaction treatment.At first start infusion pump, the waste water that will contain chromium (VI) 400mg/L is with 1m
3The flow volume delivery of/h is opened air-supplying valve then in SV-2.3/20 type gas-liquid static mixing reactor, allow SO
2Reducing gas enters the gas-liquid static mixing reactor with the flow (can be calculated as volumetric flow rate with reference to the actual gas pressure of operation) of 12mol/h.In reactor, the reaction of gas-liquid two-phase Forced Mixing flow in the corresponding storage tank through reacted wastewater.According to the analysis of components result, if chromium wherein (VI) is higher than discharge index, can adopt above-mentioned same method, do further processing; If be up to state standards, can directly utilize or discharge.
Claims (1)
1, the reactive system of gas-liquid static mixing reduction method processing waste water containing chrome, it is characterized in that: the entire reaction system is made up of waste water storage tank, infusion pump, gas-liquid static mixing reactor, liquids and gases under meter and relevant connecting tube, the waste water storage tank is connected with the gas-liquid static mixing reactor with tubing through infusion pump, the drain pipe of gas-liquid static mixing reactor connects the treating water storage tank, the treating water storage tank has two-way outlet, one the tunnel through infusion pump circulation access gas-liquid static mixing reactor, and another road connects delivery pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620110925 CN2920979Y (en) | 2006-07-10 | 2006-07-10 | Reaction system for treating sewage containing chromium by gas-liquid static mixing reduction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620110925 CN2920979Y (en) | 2006-07-10 | 2006-07-10 | Reaction system for treating sewage containing chromium by gas-liquid static mixing reduction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2920979Y true CN2920979Y (en) | 2007-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620110925 Expired - Fee Related CN2920979Y (en) | 2006-07-10 | 2006-07-10 | Reaction system for treating sewage containing chromium by gas-liquid static mixing reduction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2920979Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167709A (en) * | 2011-03-10 | 2011-08-31 | 常熟新特化工有限公司 | Method for preparing Tetrakis (hydroxymethyl) phosphonium chloride |
| CN112707537A (en) * | 2020-12-07 | 2021-04-27 | 江苏淮河化工有限公司 | Application of static mixing reactor in pretreatment of mononitrotoluene wastewater |
-
2006
- 2006-07-10 CN CN 200620110925 patent/CN2920979Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102167709A (en) * | 2011-03-10 | 2011-08-31 | 常熟新特化工有限公司 | Method for preparing Tetrakis (hydroxymethyl) phosphonium chloride |
| CN102167709B (en) * | 2011-03-10 | 2013-11-06 | 常熟新特化工有限公司 | Method for preparing Tetrakis (hydroxymethyl) phosphonium chloride |
| CN112707537A (en) * | 2020-12-07 | 2021-04-27 | 江苏淮河化工有限公司 | Application of static mixing reactor in pretreatment of mononitrotoluene wastewater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |