CN104773864A - Pretreatment technology of industrial wastewater with high sulfur content - Google Patents
Pretreatment technology of industrial wastewater with high sulfur content Download PDFInfo
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- CN104773864A CN104773864A CN201510110712.3A CN201510110712A CN104773864A CN 104773864 A CN104773864 A CN 104773864A CN 201510110712 A CN201510110712 A CN 201510110712A CN 104773864 A CN104773864 A CN 104773864A
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- trade effluent
- high sulfur
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- desulfurization
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Abstract
The invention relates to the field of gas-well produced water treatment, and especially relates to a pretreatment technology of industrial wastewater with a high sulfur content. The pretreatment technology comprises a tail gas purification system and a post-treatment system. A pH value adjuster is added into industrial wastewater with a high sulfur content to adjust the pH value to a proper range, then the wastewater is introduced into a rapid desulfurization system; a chemical desulfurization agent is added into the rapid desulfurization system, a quick gas/liquid separating facility is used, the gas generated by the industrial wastewater in the rapid desulfurization system is introduced into the tail gas purification system through the quick gas/liquid separating facility, the industrial wastewater processed by the rapid desulfurization system is introduced into an efficient solid/liquid separating system; a coagulant is added during the processing process in the efficient solid/liquid separating system, the sludge separated from the industrial wastewater after the addition of the coagulant is subjected to a solidification treatment or a burning treatment, and the sulfur-free wastewater separated from the industrial wastewater is introduced into the post-treatment system. The provided technology has the advantages of high desulfurization efficiency, little sludge output, small occupied area, and low agent using amount.
Description
Technical field
The present invention relates to gas-field wastewater process field, the pretreatment technology of especially high sulfur-bearing trade effluent.
Background technology
Industrial operations such as the industries such as oil refining, petrochemical industry, Coal Chemical Industry, pharmacy, fuel all can produce a large amount of high sulfur-bearing trade effluents in process of production.Sulfide in waste water and hydrogen sulfide is toxic, corrodibility, with stink, produces a very large impact the normal operation of sewage structures; Deliquescent metal ionic reaction easily in water, causes water body to turn black; Simultaneously when sulfide and hydrogen sulfide content height, the active sludge in subsequent disposal can be caused to be poisoned to death, to run off in a large number; Dealing carefully with therefore to high sulfur-bearing trade effluent, first will carry out and process sulfonium ion in waste water.
At present, in the high sulfur-bearing trade effluent of process, the traditional method of hydrogen sulfide and sulfide has both at home and abroad: the precipitator method, absorption method, oxidation style etc., and these traditional method floor spaces are large, sludge yield large, reagent consumption amount brings secondary pollution greatly, easily.
Summary of the invention
The object of the invention is to the pretreatment technology that a kind of high sulfur-bearing trade effluent is provided for the deficiencies in the prior art, solve that traditional treatment method floor space is large, sludge yield is large, reagent consumption amount brings the shortcomings such as secondary pollution greatly, easily.
Technical scheme of the present invention is:
A pretreatment technology for high sulfur-bearing trade effluent, comprises exhaust gas purification system and aftertreatment systems, and first high sulfur-bearing trade effluent enters desulfurization rapidly system through adding after PH mediator agent adjusts suitable pH value; In desulfurization rapidly systematic procedure, add chemical desulfurization agent, the gas that the high sulfur-bearing trade effluent through the process of desulfurization rapidly system produces enters exhaust gas purification system, and the trade effluent after the process of desulfurization rapidly system enters high-efficiency solid-liquid separation system; In high-efficiency solid-liquid separation system process, add coagulating agent, add the isolated mud of trade effluent after coagulating agent process and carry out solidification treatment or burning disposal, the waste water of its isolated not sulfur-bearing enters aftertreatment systems.
Concrete, described PH mediator agent is the combination of any one or both in sulfuric acid, hydrochloric acid, and adjusting the suitable pH value of high sulfur-bearing trade effluent is 4-6.。
Concrete, use absorption tower and regenerator column two portions equipment composition in described purification system, in absorption tower and regenerator column, load solid adsorbent or liquid-absorbant.
Concrete, described solid adsorbent is the combination of one or more in gac, molecular sieve, sponge iron, zinc oxide, and liquid-absorbant is the combination of one or more in sodium hydroxide, sodium carbonate, potassium hydroxide, EDTA Complexing Iron, methyldiethanolamine.
Concrete, described chemical desulfurization agent is the combination of one or more in ferrous sulfate, zinc sulfate, hypochlorite, superoxide, persulphate, percarbonate.
Concrete, described coagulating agent is the combination of one or more in polymerize aluminum chloride, Tai-Ace S 150, PAFS, anionic polyacrylamide.
Concrete, the equipment that described high-efficiency solid-liquid separation system uses is the combination of one or more in ballasted flocculation settling tank, settling pond, whizzer, air flotation pool.
Concrete, described Quick gas-liquid separating device is be the one in hypergravity machine, vacuum degasser or its combination.
Beneficial effect of the present invention is: utilize the advantage that Quick gas-liquid separating device liquid phase mass transfer coefficient is high, mass transfer velocity is fast, achieve the desulfurization rapidly of high sulfur-bearing trade effluent, compare in traditional technology and greatly reduce floor space, equipment conveying is easy for installation simultaneously, maintenance operation is simple, environmental compatibility is strong, sludge yield is low; Solid adsorbent or the liquid-absorbant of exhaust gas purification system employing are all renewable, and reduce reagent consumption, the hydrogen sulfide waste gas of absorption is converted into elemental sulfur by regenerative process, achieves and turns waste into wealth.Technique desulfuration efficiency provided by the present invention is high, and sludge yield is few, and floor space is little, and chemical feeding quantity is low.
Accompanying drawing explanation
Fig. 1 is module map of the present invention.
Embodiment
Specific embodiment 1
A pretreatment technology for high sulfur-bearing trade effluent, comprises exhaust gas purification system and aftertreatment systems, and first high sulfur-bearing trade effluent enters desulfurization rapidly system through adding after PH mediator agent adjusts suitable pH value; In desulfurization rapidly systematic procedure, add chemical desulfurization agent, the gas that the high sulfur-bearing trade effluent through the process of desulfurization rapidly system produces enters exhaust gas purification system, and the trade effluent after the process of desulfurization rapidly system enters high-efficiency solid-liquid separation system; In high-efficiency solid-liquid separation system process, add coagulating agent, add the isolated mud of trade effluent after coagulating agent process and carry out solidification treatment or burning disposal, the waste water of its isolated not sulfur-bearing enters aftertreatment systems.
Use pretreatment technology provided by the present invention to be used in the pretreatment technology of certain petrochemical plant height sulfur-bearing trade effluent, its high sulfur-bearing trade effluent medium sulphide content content is 3320mg/l, PH is 12.0, COD
crfor 63000mg/l, suspension content is 2300mg/l.In the high sulfur-bearing trade effluent of discharging, appropriate sulfuric acid is added by line mixer, pH value is adjusted to 4.5, then make it enter hypergravity machine that rotating speed is 700r/min, vapour-liquid ratio simultaneously by 50:1 in hypergravity passes into air, trade effluent is residence time 2min in hypergravity machine, the pH value of discharging waste water is 6.0, and discharging sulfides from wastewater content is 110mg/l; The hydrogen sulfide removed enters exhaust gas purification system process, adopts 5A molecular sieve solid sorbent material in absorption tower; Discharge waste water after hypergravity machine desulfurization enters chemical desulfurization tank, the chlorine bleach liquor that concentration is 12% is added in chemical desulfurization tank, add-on is 10ml/l, stirring reaction 30min, enter settling pond after chemical desulfurization tank water outlet coagulating agent, coagulating agent is respectively 200mg/l polymerize aluminum chloride and 5mg/l anionic polyacrylamide, and the mud precipitated is cured process or burning disposal, settling pond water outlet enters aftertreatment systems, and treatment effect is good.
Embodiment 2
Be used in by pretreatment technology provided by the invention in certain refinery height sulfur-bearing technique for treating industrial wastewater, its high sulfur-bearing trade effluent medium sulphide content content is 4680mg/l, PH is 12.5, COD
crfor 86000mg/l, suspension content is 760mg/l.In recovered water, appropriate sulfuric acid is added by line mixer, PH is adjusted to 4.0, make it enter again hypergravity machine that rotating speed is 1000r/min, vapour-liquid ratio simultaneously by 20:1 in hypergravity passes into nitrogen, trade effluent is residence time 1min in hypergravity machine, discharging water ph value is 6.5, and discharging trade effluent sulfide content is 230mg/l; The hydrogen sulfide removed enters exhaust gas purification system process, adopts cocoanut active charcoal to be solid adsorbent in absorption tower; Waste water after hypergravity machine desulfurization enters chemical desulfurization tank, the hydrogen peroxide that concentration is 27.5% is added in chemical desulfurization tank, hydrogen peroxide add-on is 2g/l, stirring reaction 30min, ballasted flocculation pond is entered after the waste water of discharging after the process of chemical desulfurization tank adds coagulating agent, coagulating agent is respectively 300mg/l PAFS and 10mg/l anionic polyacrylamide, the mud precipitated is cured process or burning disposal, the water outlet of ballasted flocculation pond enters aftertreatment systems, and treatment effect is good.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (8)
1. a pretreatment technology for high sulfur-bearing trade effluent, comprises exhaust gas purification system and aftertreatment systems, it is characterized in that, first high sulfur-bearing trade effluent enters desulfurization rapidly system through adding after PH mediator agent adjusts suitable pH value; In desulfurization rapidly systematic procedure, add chemical desulfurization agent and use Quick gas-liquid separating device, the gas produced through the high sulfur-bearing trade effluent of desulfurization rapidly system process enters exhaust gas purification system by Quick gas-liquid separating device, and the trade effluent after the process of desulfurization rapidly system enters high-efficiency solid-liquid separation system; In high-efficiency solid-liquid separation system process, add coagulating agent, add the isolated mud of trade effluent after coagulating agent process and carry out solidification treatment or burning disposal, the waste water of its isolated not sulfur-bearing enters aftertreatment systems.
2. the pretreatment technology of a kind of high sulfur-bearing trade effluent according to claim 1, is characterized in that, described PH mediator agent is the combination of any one or both in sulfuric acid, hydrochloric acid, and adjusting the suitable pH value of high sulfur-bearing trade effluent is 4-6.
3. the pretreatment technology of a kind of high sulfur-bearing trade effluent according to claim 1, is characterized in that, uses absorption tower and regenerator column two portions equipment composition, load solid adsorbent or liquid-absorbant in absorption tower and regenerator column in described purification system.
4. one kind uses the pretreatment technology of a kind of high sulfur-bearing trade effluent as claimed in claim 3, it is characterized in that, described solid adsorbent is the combination of one or more in gac, molecular sieve, sponge iron, zinc oxide, and liquid-absorbant is the combination of one or more in sodium hydroxide, sodium carbonate, potassium hydroxide, EDTA Complexing Iron, methyldiethanolamine.
5. the pretreatment technology of a kind of high sulfur-bearing trade effluent according to claim 1, is characterized in that, described chemical desulfurization agent is the combination of one or more in ferrous sulfate, zinc sulfate, hypochlorite, superoxide, persulphate, percarbonate.
6. the pretreatment technology of a kind of high sulfur-bearing trade effluent according to claim 1, is characterized in that, described coagulating agent is the combination of one or more in polymerize aluminum chloride, Tai-Ace S 150, PAFS, anionic polyacrylamide.
7. the pretreatment technology of a kind of high sulfur-bearing trade effluent according to claim 1, is characterized in that, the equipment that described high-efficiency solid-liquid separation system uses is the combination of one or more in ballasted flocculation settling tank, settling pond, whizzer, air flotation pool.
8. the pretreatment technology of a kind of high sulfur-bearing trade effluent according to claim 1, is characterized in that, described Quick gas-liquid separating device is be the one in hypergravity machine, vacuum degasser or its combination.
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| CN201510110712.3A CN104773864A (en) | 2015-03-14 | 2015-03-14 | Pretreatment technology of industrial wastewater with high sulfur content |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836946A (en) * | 2016-06-02 | 2016-08-10 | 陈昌 | Method for treating high-sulfur sewage |
| CN106867484A (en) * | 2017-03-31 | 2017-06-20 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Drilling fluid that a kind of oil field extracted water is prepared and preparation method thereof |
| CN108928969A (en) * | 2018-08-24 | 2018-12-04 | 贾炎龙 | A kind of processing method of sulfur-containing waste water |
| CN110204112A (en) * | 2019-06-13 | 2019-09-06 | 河南安立信环保科技有限公司 | Power plant waste water Zero-discharge treating process |
| CN111186928A (en) * | 2018-11-15 | 2020-05-22 | 魏县聚银环保科技有限公司 | Industrial waste water is with desulfurization softening treatment device |
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| WO2003080519A1 (en) * | 2002-03-25 | 2003-10-02 | Mitsubishi Gas Chemical Company, Inc. | Method of wastewater treatment |
| CN101838072A (en) * | 2010-05-31 | 2010-09-22 | 西安热工研究院有限公司 | Treatment system and treatment method for reducing amount of volatile heavy metal sludge in desulfurization wastewater |
| CN102863097A (en) * | 2012-09-14 | 2013-01-09 | 濮阳市天地人环保工程技术有限公司 | Standardized treatment reinjection method of sulfur-containing waste liquid of high sulfur-containing oil and gas field |
| CN102992507A (en) * | 2011-09-15 | 2013-03-27 | 四川仁智石化科技有限责任公司 | Oil and gas field high-sulfur-content waste water processing method |
| CN103214124A (en) * | 2013-05-13 | 2013-07-24 | 达州军华油田工程服务有限公司 | Gas production wastewater desulfurization purification pretreatment technology |
-
2015
- 2015-03-14 CN CN201510110712.3A patent/CN104773864A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003080519A1 (en) * | 2002-03-25 | 2003-10-02 | Mitsubishi Gas Chemical Company, Inc. | Method of wastewater treatment |
| CN101838072A (en) * | 2010-05-31 | 2010-09-22 | 西安热工研究院有限公司 | Treatment system and treatment method for reducing amount of volatile heavy metal sludge in desulfurization wastewater |
| CN102992507A (en) * | 2011-09-15 | 2013-03-27 | 四川仁智石化科技有限责任公司 | Oil and gas field high-sulfur-content waste water processing method |
| CN102863097A (en) * | 2012-09-14 | 2013-01-09 | 濮阳市天地人环保工程技术有限公司 | Standardized treatment reinjection method of sulfur-containing waste liquid of high sulfur-containing oil and gas field |
| CN103214124A (en) * | 2013-05-13 | 2013-07-24 | 达州军华油田工程服务有限公司 | Gas production wastewater desulfurization purification pretreatment technology |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105836946A (en) * | 2016-06-02 | 2016-08-10 | 陈昌 | Method for treating high-sulfur sewage |
| CN106867484A (en) * | 2017-03-31 | 2017-06-20 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Drilling fluid that a kind of oil field extracted water is prepared and preparation method thereof |
| CN108928969A (en) * | 2018-08-24 | 2018-12-04 | 贾炎龙 | A kind of processing method of sulfur-containing waste water |
| CN111186928A (en) * | 2018-11-15 | 2020-05-22 | 魏县聚银环保科技有限公司 | Industrial waste water is with desulfurization softening treatment device |
| CN110204112A (en) * | 2019-06-13 | 2019-09-06 | 河南安立信环保科技有限公司 | Power plant waste water Zero-discharge treating process |
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Application publication date: 20150715 |