CN104496093B - Method for performing purification treatment on titanium white wastewater by utilizing salt slurry - Google Patents
Method for performing purification treatment on titanium white wastewater by utilizing salt slurry Download PDFInfo
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- CN104496093B CN104496093B CN201410612838.6A CN201410612838A CN104496093B CN 104496093 B CN104496093 B CN 104496093B CN 201410612838 A CN201410612838 A CN 201410612838A CN 104496093 B CN104496093 B CN 104496093B
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Abstract
The invention belongs to the field of wastewater processing, and concretely relates to a method for performing purification treatment on titanium white wastewater by utilizing salt slurry. The processing method for titanium white wastewater comprises adding dry salt slurry into titanium white wastewater, fully stirring and neutralizing, and performing aeration and sedimentation. Aiming at the characteristics of titanium white factory acidic wastewater and rock salt salt-preparation waste residue (industrial salt), the method employs a neutralization and aeration sedimentation technology for processing titanium white wastewater, and enables the water discharging index to reach second-level discharge requirement of Integrated Wastewater Discharge Standard GB8978-1996. The method effectively reduces wastewater processing cost, and also removes Fe＜2+＞ and SO4＜2-＞ in wastewater. The method has the circular economic characteristics of simple flow, no special requirement on equipment, reutilization of wastes and the like. Compared with a conventional marble powder processing technology, the method reduces production cost and improves purification processing effect.
Description
Technical field
The invention belongs to field of waste water treatment, specifically related to a kind of side of utilization brine sludge purified treatment sulfate process titanium dioxide waste water
Method.
Background technology
Titanium dioxide has stable physicochemical property, good photoelectric property and excellent pigment performance, coating, building materials,
The industries such as papermaking, ink, chemical fibre, rubber, electronics, pottery, metallurgy and water process have the extensive of application；Industrialized production side at present
Method has sulfuric acid process and chloridising, and wherein sulfuric acid process is a main technique of titanium white production；Useless during this technique productions titanium dioxide
Water and spent acid discharge capacity are quite big, mainly contain free h in these waste water and spent acid2so4, iron salt, float, the dirt such as Organic substance
Dye material and a small amount of heavy metal, if without dealing carefully with, can cause very big pollution to environment.Traditional titanium dioxide liquid waste processing
Method is to be inorganic agent using marble powder, and consumption is big, poor processing effect, needs plus subsequent oxidation Calcium treatment.Brine sludge is to utilize
Rock salt produces the waste residue during sodium chloride, cannot deal carefully with always.It was found that processing titanium white with conventional marble powder
Powder produces waste liquid technology and compares, and the effective ingredient calcium salt in brine sludge and sodium salt have the effect of good process titanium white production waste liquid
Really.The good recycling economy characteristic of this technological maheup.
Content of the invention
The present invention is intended to provide a kind of recycling searce way of the waste residue brine sludge for rock salt production and economical rationality
Titanium dioxide wastewater processing method.
Add dry brine sludge in titanium dioxide wastewater, after being sufficiently stirred for neutralizing 15-30min, aeration 20-30min, sedimentation
The supernatant is gone after 5min.
In titanium dioxide wastewater, the injected volume of brine sludge is: puts in every 100ml titanium dioxide wastewater and brine sludge 6.2-27.3g is dried.
Described mixing speed is 400r/min.
Aeration rate during described aeration is 0.1-2.0l/min.
The present invention is directed to the feature of titanium powder plant acid waste water and rock salt salt manufacturing waste residue (brine sludge), is sunk using neutralization plus aeration
Shallow lake PROCESS FOR TREATMENT titanium dioxide wastewater, effluent index reaches two grades of emission requests of " integrated wastewater discharge standard " gb8978-1996.
The invention has the beneficial effects as follows: compared with traditional marble powder treatment technology, brine sludge effectively removes in waste water
Fe2+、so4 2-.And accelerate fe in waste water2+Oxidation, reduce cost for wastewater treatment.
Specific embodiment
With reference to specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to
This.
Embodiment one
Take 200ml titanium dioxide wastewater, add the brine sludge that 12.4g is dried, after 400r/min speed stirring 15min, aeration rate
For aeration 20min under 0.1l/min, after standing 5min, take the supernatant, measure ph, fe2+With the mass concentration of ss (float) with
And cod (COD).Wherein the mensure of ph adopts glass electrode method, fe2+Mensure adopt Phen spectrophotography,
Ss measures and adopts potassium dichromate method using the mensure of gravimetric method, cod.The results are shown in Table 1.
The result of table 1 titanium dioxide wastewater
| Project | ph | fe2+(mg/l) | ss(mg/l) | cod(mg/l) |
| After process | 6.98 | 3.6 | 65 | 43 |
| Discharge standard | 6-9 | — | <150 | <120 |
Embodiment two
Take 200ml titanium dioxide wastewater, add the brine sludge that 12.4g is dried, after 400r/min speed stirring 30min, aeration rate
For aeration 30min under 1.0l/min, after standing 5min, take the supernatant, measure ph, fe2+With the mass concentration of ss (float) with
And cod (COD).Wherein the mensure of ph adopts glass electrode method, fe2+Mensure adopt Phen spectrophotography,
Ss measures and adopts potassium dichromate method using the mensure of gravimetric method, cod.The results are shown in Table 2.
The result of table 2 titanium dioxide wastewater
| Project | ph | fe2+(mg/l) | ss(mg/l) | cod(mg/l) |
| After process | 7.12 | 3.4 | 58 | 40 |
| Discharge standard | 6-9 | — | <150 | <120 |
Embodiment three
Take 200ml titanium dioxide wastewater, add the brine sludge that 30.4g is dried, after 400r/min speed stirring 15min, aeration rate
For aeration 30min under 2.0l/min, after standing 5min, take the supernatant, measure ph, fe2+With the mass concentration of ss (float) with
And cod (COD).Wherein the mensure of ph adopts glass electrode method, fe2+Mensure adopt Phen spectrophotography,
Ss measures and adopts potassium dichromate method using the mensure of gravimetric method, cod.The results are shown in Table 3.
The result of table 3 titanium dioxide wastewater
| Project | ph | fe2+(mg/l) | ss(mg/l) | cod(mg/l) |
| After process | 8.52 | 3.0 | 50 | 35 |
| Discharge standard | 6-9 | — | <150 | <120 |
Example IV
Take 200ml titanium dioxide wastewater, add the brine sludge that 18.4g is dried, after 400r/min speed stirring 30min, aeration rate
For aeration 30min under 1.0l/min, after standing 5min, take the supernatant, measure ph, fe2+With the mass concentration of ss (float) with
And cod (COD).Wherein the mensure of ph adopts glass electrode method, fe2+Mensure adopt Phen spectrophotography,
Ss measures and adopts potassium dichromate method using the mensure of gravimetric method, cod.The results are shown in Table 4.
The result of table 4 titanium dioxide wastewater
| Project | ph | fe2+(mg/l) | ss(mg/l) | cod(mg/l) |
| After process | 7.30 | 2.4 | 40 | 28 |
| Discharge standard | 6-9 | — | <150 | <120 |
Embodiment five (contrast test)
Contrast test is carried out for inorganic agent using traditional marble powder as follows.Take 200ml titanium dioxide wastewater, add 30.4g
Particle diameter is less than the marble powder of 100 mesh, and after 400r/min speed stirring 30min, aeration rate is aeration under 2.0l/min
30min, takes the supernatant after standing 5min, measures ph, fe2+Mass concentration and cod (chemical oxygen demand with ss (float)
Amount).Wherein the mensure of ph adopts glass electrode method, fe2+Mensure using Phen spectrophotography, ss measure adopt weight
Method, the mensure of cod adopt potassium dichromate method.The results are shown in Table 5.
The result of table 5 titanium dioxide wastewater
| Project | ph | fe2+(mg/l) | ss(mg/l) | cod(mg/l) |
| After process | 4.30 | 5.4 | 80 | 38 |
| Discharge standard | 6-9 | — | <150 | <120 |
Described embodiment be the present invention preferred embodiment, but the present invention is not limited to above-mentioned embodiment, not
In the case of deviating from the flesh and blood of the present invention, any conspicuously improved, replacement that those skilled in the art can make
Or modification belongs to protection scope of the present invention.
Claims (1)
1. a kind of method using brine sludge purified treatment titanium dioxide wastewater is it is characterised in that comprise the following steps:
Put into, according in 100ml sulphuric acid titanium dioxide wastewater, the ratio that brine sludge 6.2-27.3g is dried, add dry in sulphuric acid titanium dioxide wastewater
Dry brine sludge, after being sufficiently stirred for neutralizing 15-30min, aeration 20-30min, go the supernatant after sedimentation 5min, described
Mixing speed is 400r/min, and aeration rate during aeration is 0.10-2.0l/min；
Described brine sludge is rock salt salt manufacturing waste residue.
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| CN109095677A (en) * | 2018-09-20 | 2018-12-28 | 攀钢集团钛业有限责任公司 | Containing sodium hypochlorite waste water and sulfate process titanium dioxide acid waste water integrated conduct method |
| CN112429896B (en) * | 2020-10-29 | 2022-10-25 | 河南佰利联新材料有限公司 | Treatment method of salt mud produced in chlor-alkali production |
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| UA67084C2 (en) * | 2003-07-08 | 2007-07-10 | Закрите Акціонерне Товариство "Сєвєродонецьке Об'Єднання Азот" | Method for purification of waste water |
| CN101632896A (en) * | 2009-08-03 | 2010-01-27 | 山东山大能源环境有限公司 | Wet flue gas desulfurization process using waste salt slurry |
| CN201620035U (en) * | 2010-01-12 | 2010-11-03 | 卜明 | Raw brine deferrization device |
| CN102060316A (en) * | 2010-04-30 | 2011-05-18 | 汪晋强 | Method for producing micro barium sulfate as well as light-weight magnesium carbonate and calcium carbonate from rock salt sludge |
| CN102070174A (en) * | 2010-04-30 | 2011-05-25 | 汪晋强 | Method for co-producing barium sulfate, light micro magnesium carbonate and calcium carbonate from rock salt slurry |
| CN102070176A (en) * | 2010-04-30 | 2011-05-25 | 汪晋强 | Method for producing barium sulfate, ultra-fine light magnesium carbonate and ultra-fine light calcium carbonate simultaneously with rock salt mud |
| CN103523888A (en) * | 2013-10-13 | 2014-01-22 | 陕西盛迈石油有限公司 | Titanium dioxide wastewater treatment method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100575276C (en) * | 2006-04-03 | 2009-12-30 | 安徽安纳达钛业股份有限公司 | The pretreated method of a kind of titanium dioxide acid waste water |
| CN101962239B (en) * | 2010-09-20 | 2012-01-04 | 湖南永利化工股份有限公司 | Method for purifying titanium white wastewater |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UA67084C2 (en) * | 2003-07-08 | 2007-07-10 | Закрите Акціонерне Товариство "Сєвєродонецьке Об'Єднання Азот" | Method for purification of waste water |
| CN101632896A (en) * | 2009-08-03 | 2010-01-27 | 山东山大能源环境有限公司 | Wet flue gas desulfurization process using waste salt slurry |
| CN201620035U (en) * | 2010-01-12 | 2010-11-03 | 卜明 | Raw brine deferrization device |
| CN102060316A (en) * | 2010-04-30 | 2011-05-18 | 汪晋强 | Method for producing micro barium sulfate as well as light-weight magnesium carbonate and calcium carbonate from rock salt sludge |
| CN102070174A (en) * | 2010-04-30 | 2011-05-25 | 汪晋强 | Method for co-producing barium sulfate, light micro magnesium carbonate and calcium carbonate from rock salt slurry |
| CN102070176A (en) * | 2010-04-30 | 2011-05-25 | 汪晋强 | Method for producing barium sulfate, ultra-fine light magnesium carbonate and ultra-fine light calcium carbonate simultaneously with rock salt mud |
| CN103523888A (en) * | 2013-10-13 | 2014-01-22 | 陕西盛迈石油有限公司 | Titanium dioxide wastewater treatment method |
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