CN106517417A - New process for cyclic utilization of three-times-washing water based on titanium dioxide - Google Patents
New process for cyclic utilization of three-times-washing water based on titanium dioxide Download PDFInfo
- Publication number
- CN106517417A CN106517417A CN201610963195.9A CN201610963195A CN106517417A CN 106517417 A CN106517417 A CN 106517417A CN 201610963195 A CN201610963195 A CN 201610963195A CN 106517417 A CN106517417 A CN 106517417A
- Authority
- CN
- China
- Prior art keywords
- water
- film
- wash
- desalting
- membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
Abstract
The invention discloses a new process for cyclic utilization of three-times-washing water based on titanium dioxide. The new process comprises the following steps: (1) performing membrane washing on a material after surface treatment; and (2) performing first-level DTRO (Disk Tubular Reverse Osmosis) membrane desalting and second-level DTRO membrane desalting in turn after membrane washing, wherein the first-level DTRO membrane desalting is utilized to discharge a part of strong brine and conditioning fluid entering the second-level DTRO membrane desalting, and the second-level DTRO membrane desalting is utilized to discharge a part of low-concentration brine and recycling water. According to the technical scheme, the membrane washing and the washing membrane desalting treatment are performed on the basis of the characteristics of the sizing agent after the surface treatment with titanium dioxide. The purpose of saving water is achieved, the recycled water can reach the standard of technical desalting water, and the recycled water can be repeatedly utilized in production. Water resources are greatly saved, an independent desalting water treatment system is not required any more, the equipment running is simple, and the maintenance cost is low. TDS discharged according to the technical scheme is 40000mg/L heavy salt water, the rest water is fully recycled in production lines, the highest recovery rate reaches up to 60%, and a great quantity of water resources are saved.
Description
Technical field
The present invention relates to sewage water treatment method, is exactly a kind of new technology recycled based on three wash water of titanium white.
Background technology
The production of Chinese titanium dioxide, to the production capacity that 3,200,000 tons/year have been defined at the end of 2015, occupies the first in the world, but
It is that the production capacity of China more than 90% remains Production By Sulfuric Acid Process technique.Sulfuric acid process compares the life that chloridising is highly energy-consuming, high pollution
Production. art, is national restricted development projects.Although nearly 20 years or so the new technologies of continuous Introduced From Abroad sulfuric acid process and the country
The continuous technological innovation of titanium white technical staff, operation of titanium dioxide per ton still water consumption 70-80 tons, wherein post processing three washing consume 10 tons and take off
Saline, more than 1000 KWh of power consumption discharge 50-75 cube of high salinity neutral water.
In addition, China titanium dioxide production capacity more than 80% is rutile titanium white lead, the type titanium dioxide is high-grade pigment titanium white
Powder, it is necessary to the operation such as be surface-treated and washed and process, domestic washing process is using sheet frame washing.The washing process makes
It is filter medium with filter cloth, it is impossible to carry out industrial automation design, artificial manipulation strength is big, and washing efficiency is low, filter cloth often uses 5
Periodic replacement is needed within individual month, washing speed is otherwise had a strong impact on, efficiency is substantially reduced.Water consume also rises therewith.
If according to 10 tons of meters of single ton of titanium white post processing water consume, consuming about 25,600,000 tons of desalted water in such production capacity year.
Post processing three washes technique using sheet frame washing process, and its ton of titanium white washes water consume substantially in 6-7 tons, and water consume is higher, and the water
The technology being never adapted in terms of regeneration, current three to wash state of art as follows：
Substantial amounts of ion is brought in the Titanium dioxide slurry of surface treated (inorganic coating), it is necessary to through washing ion
Drop to certain degree and could enter next procedure.So Jing filter press is dehydrated, ton titanium white about produces 3 tons or so of high salt
Waste water, sheet frame water-washing process about produce 7 tons or so of less salt waste water.After two parts water mixing, TDS is relatively up to 20000mg/L
Left and right, with prior art, substantially without value, can only discharge；After such as separate this two parts water, (we claim less salt waste water
Waste water is washed for three) at present technology can only also accomplish low value reuse, be generally used for two and wash operation or for shower water, reduce discharging not clear
It is aobvious.
The following is three main components for washing waste water：
Current less salt waste water recycling process is as follows：Desalted water → titanium dioxide three washes → less salt waste water → sedimentation → reuse one
Wash, two wash.Because three wash the high-salt wastewater for being mainly sulfur acid sodium in waste water, TDS is close to 4000mg/L, recycle one to wash,
Two wash the quality that will certainly affect product, and reclamation rate is relatively low, can only typically be back to use 50%, in addition be also enter sewage
Treating stations, water resource are wasted.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of new technology recycled based on three wash water of titanium white, the technique
Three wash waters are few with water, and washing efficiency is high, and wash water reclamation rate is high, operating cost is low, stable effluent quality.
To solve above-mentioned technical problem, the present invention adopts following technological means：
A kind of new technology recycled based on three wash water of titanium white, is comprised the steps of：
(1) after being surface-treated, material first carries out film water and washes；
(2) one-level DTRO film desalination, two grades of DTRO film desalinations are successively carried out after film water is washed；One-level DTRO film desalination discharge unit
Divide strong brine and the treatment fluid into two grades of DTRO film desalinations；The low strong brine of secondary membrane desalination discharge part and recycle-water.
From from the point of view of energy-conserving and environment-protective, three to wash waste water recycling be obvious approach, and membrane treatment process is then titanium
White lead three washes the main path of waste water recycling, using the present invention of above-mentioned technical proposal, compared with prior art, its spy for projecting
Putting is：
The technical program for Surface of Titanium Dioxide process disposed slurry the characteristics of carried out film water wash, wash water film desalting processing.Make
Which not only reaches the purpose of water saving, and recycle-water has reached the standard of technique desalted water, reuses in production.Significantly
Water resource is saved, and there need not be single desalted water processing system again, equipment operation is simple, and maintenance cost is low.This technology
Scheme discharge for TDS for 40000mg/L haline water, its remaining water complete-reclaiming production line, the response rate be up to 60%,
Substantial amounts of water resource is saved.
Further optimal technical scheme is as follows：
The waste water that material is produced Jing after three wash circulating slot process after described surface treatment is transported to film water and washes；Two grades of DTRO
Recycle-water after film desalination is transported to three after desalination water tank washes circulating slot carries out reuse.By the process of above-mentioned link, can
To discharge haline water, reuse is carried out to available water.
Carry out one-level DTRO film desalination after wash water storage tank again through the discharge light salt brine that film water is washed, wash water storage tank with it is pre-
Processing system connection, pretreatment system and moisturizing pipeline communication.By arranging pretreatment system, pretreatment can be passed through when needed
System supplements water into system.
Described moisturizing pipeline is sand leaching water.
Described pretreatment system is connected with drying and dehydrating sheet frame by water inlet pipe, and the waste water of drying and dehydrating sheet frame is transported to
Pretreatment system.By above-mentioned setting, the waste water of drying and dehydrating sheet frame can be carried out treatment for reuse.
Description of the drawings
Fig. 1 is the process chart of the present invention.
Specific embodiment
With reference to embodiment, the present invention is further illustrated.
Understand that referring to Fig. 1 a kind of new technology recycled based on three wash water of titanium white of the present invention is comprised the steps of：
(1) after being surface-treated, material first carries out film water and washes；
(2) one-level DTRO film desalination, two grades of DTRO film desalinations are successively carried out after film water is washed；One-level DTRO film desalination discharge unit
Divide strong brine and the treatment fluid into two grades of DTRO film desalinations；The low strong brine of secondary membrane desalination discharge part and recycle-water.
From from the point of view of energy-conserving and environment-protective, three to wash waste water recycling be obvious approach, and membrane treatment process is then titanium
White lead three washes the main path of waste water recycling, has three key problems in membrane process：(1) selection of the fore filter of film,
Mechanical admixture turbidity substantially in the range of 160-240UNT, compared with and water in contain a certain amount of unstable small titanium white powder particles,
Conventional flocculation sediment cannot be carried out, pretreatment is more difficult, be liable to stick to film surface and result in blockage, and not easy cleaning, this will be serious
Affect the separation rate and service life of film.(2) discharge of strong brine, the discharge of strong brine are inevasible, but can be control
Make the number of its discharge capacity.(3) the operation complexity and later maintenance expense of equipment.
The technical program for Surface of Titanium Dioxide process disposed slurry the characteristics of carried out film water wash, wash water film desalting processing.Make
Which not only reaches the purpose of water saving, and recycle-water has reached the standard of technique desalted water, reuses in production.Significantly
Water resource is saved, and there need not be single desalted water processing system again, equipment operation is simple, and maintenance cost is low.This technology
Scheme discharge for TDS for 40000mg/L haline water, its remaining water complete-reclaiming production line, the response rate be up to 60%,
Substantial amounts of water resource is saved.
The waste water that material is produced Jing after three wash circulating slot process after described surface treatment is transported to film water and washes；Two grades of DTRO
Recycle-water after film desalination is transported to three after desalination water tank washes circulating slot carries out reuse.By the process of above-mentioned link, can
To discharge haline water, reuse is carried out to available water.
Carry out one-level DTRO film desalination after wash water storage tank again through the discharge light salt brine that film water is washed, wash water storage tank with it is pre-
Processing system connection, pretreatment system and moisturizing pipeline communication.By arranging pretreatment system, pretreatment can be passed through when needed
System supplements water into system.
Described moisturizing pipeline is sand leaching water.
Described pretreatment system is connected with drying and dehydrating sheet frame by water inlet pipe, and the waste water of drying and dehydrating sheet frame is transported to
Pretreatment system.By above-mentioned setting, the waste water of drying and dehydrating sheet frame can be carried out treatment for reuse.
The present embodiment discharge for TDS for 40000mg/L haline water, its remaining water complete-reclaiming production line, the response rate
Up to 60%, save substantial amounts of water resource.In production process, maintenance cost for existing equipment 70%；And discharge
Waste water quality is stable, is easy to the sewage disposal of next step.
Specific embodiment due to the foregoing is only the present invention, but the protection not limited to this of the present invention, any skill
The technical staff in art field it is contemplated that change or the replacement of the equivalent of the technical program technical characteristic, all cover the present invention's
Within protection domain.
Claims (5)
1. a kind of new technology recycled based on three wash water of titanium white, including film water is washed, film desalination, it is characterised in that comprising following
Step：
(1) after being surface-treated, material first carries out film water and washes；
(2) one-level DTRO film desalination, two grades of DTRO film desalinations are successively carried out after film water is washed；One-level DTRO film desalination discharge part is dense
Saline and the treatment fluid into two grades of DTRO film desalinations；The low strong brine of secondary membrane desalination discharge part and recycle-water.
2. the new technology recycled based on three wash water of titanium white according to claim 1, it is characterised in that：Described surface
The waste water that material is produced Jing after three wash circulating slot process after process is transported to film water and washes；Recycle-water after two grades of DTRO film desalinations leads to
Three are transported to after crossing desalination water tank washing circulating slot carries out reuse.
3. the new technology recycled based on three wash water of titanium white according to claim 1, it is characterised in that：Wash through film water
Discharge light salt brine carry out one-level DTRO film desalination after wash water storage tank again, wash water storage tank is connected with pretreatment system, pre- to locate
Reason system and moisturizing pipeline communication.
4. the new technology recycled based on three wash water of titanium white according to claim 3, it is characterised in that：Described moisturizing
Pipeline is sand leaching water.
5. the new technology recycled based on three wash water of titanium white according to claim 3, it is characterised in that：Described pre- place
Reason system is connected with drying and dehydrating sheet frame by water inlet pipe, and the waste water of drying and dehydrating sheet frame is transported to pretreatment system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610963195.9A CN106517417A (en) | 2016-11-04 | 2016-11-04 | New process for cyclic utilization of three-times-washing water based on titanium dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610963195.9A CN106517417A (en) | 2016-11-04 | 2016-11-04 | New process for cyclic utilization of three-times-washing water based on titanium dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106517417A true CN106517417A (en) | 2017-03-22 |
Family
ID=58325849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610963195.9A Pending CN106517417A (en) | 2016-11-04 | 2016-11-04 | New process for cyclic utilization of three-times-washing water based on titanium dioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106517417A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813098A (en) * | 2019-11-18 | 2020-02-21 | 上海安赐环保科技股份有限公司 | Sulfuric acid method titanium dioxide production method and cleaning method of membrane equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336488A (en) * | 2011-09-05 | 2012-02-01 | 宋玉军 | Integral management method for acid sewage generated in titanium white powder production process |
| CN103224297A (en) * | 2013-04-28 | 2013-07-31 | 山东玉鑫环保科技有限公司 | Titanium dioxide production wastewater reuse process |
| CN204569574U (en) * | 2015-03-30 | 2015-08-19 | 科源新创（北京）投资有限公司 | The treatment system of Titanium White Production By Sulfuric Acid Process discharge acid waste water |
| CN205087969U (en) * | 2015-07-31 | 2016-03-16 | 上海安赐环保科技股份有限公司 | Titanium white powder plain boiled water recycling system |
| CN105948291A (en) * | 2016-06-03 | 2016-09-21 | 南京蓝色天空环保科技有限公司 | Titanium-dioxide low-salt-waste-water recycling device and recycling method for low-salt waste water |
-
2016
- 2016-11-04 CN CN201610963195.9A patent/CN106517417A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336488A (en) * | 2011-09-05 | 2012-02-01 | 宋玉军 | Integral management method for acid sewage generated in titanium white powder production process |
| CN103224297A (en) * | 2013-04-28 | 2013-07-31 | 山东玉鑫环保科技有限公司 | Titanium dioxide production wastewater reuse process |
| CN204569574U (en) * | 2015-03-30 | 2015-08-19 | 科源新创（北京）投资有限公司 | The treatment system of Titanium White Production By Sulfuric Acid Process discharge acid waste water |
| CN205087969U (en) * | 2015-07-31 | 2016-03-16 | 上海安赐环保科技股份有限公司 | Titanium white powder plain boiled water recycling system |
| CN105948291A (en) * | 2016-06-03 | 2016-09-21 | 南京蓝色天空环保科技有限公司 | Titanium-dioxide low-salt-waste-water recycling device and recycling method for low-salt waste water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110813098A (en) * | 2019-11-18 | 2020-02-21 | 上海安赐环保科技股份有限公司 | Sulfuric acid method titanium dioxide production method and cleaning method of membrane equipment |
| CN110813098B (en) * | 2019-11-18 | 2022-03-08 | 上海安赐环保科技股份有限公司 | Sulfuric acid method titanium dioxide production method and cleaning method of membrane equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100457645C (en) | Zero discharge and circular utilization method of industrial effluent in regeneration treatment | |
| CN104609605B (en) | Device and method for realizing printing and dyeing dyed wastewater reuse and dye recovery | |
| CN101148298A (en) | Integration treatment recovery method for alkali decrement waste water by film method | |
| CN205295084U (en) | Processing system of wax printing waste water | |
| CN106881319B (en) | A kind of the plastic container cleaning system and its working method of sewage zero-discharge | |
| CN105439326A (en) | Treatment method of chemical nickel-plating wastewater | |
| CN106986488B (en) | Dyeing and finishing comprehensive wastewater recycling treatment system and process | |
| CN206266392U (en) | A kind of papermaking wastewater zero-discharge treatment system | |
| CN104710040A (en) | High-recovery-rate process for treating high-sulfate-content high-hardness mine water | |
| KR20110068726A (en) | Pre-treatment device and method for desalination | |
| CN104402138B (en) | A kind of pulping wastewater treatment method | |
| CN106422780B (en) | Circulating type forward osmosis high-salinity organic wastewater treatment system capable of being continuously operated | |
| CN106745517A (en) | A kind of handling process of short fine acid waste water | |
| CN106517417A (en) | New process for cyclic utilization of three-times-washing water based on titanium dioxide | |
| CN105600983A (en) | Reduction treatment method for high-salt wastewater | |
| CN208869412U (en) | The processing system of chromate waste water | |
| CN108203193A (en) | A kind of cooling cycle wastewater recycling process | |
| CN112028273A (en) | High-recovery-rate reclaimed water recycling advanced treatment system and treatment method | |
| CN204454775U (en) | A kind of trivalent chromium passivation Wastewater zero-discharge treatment system | |
| CN104030489B (en) | The processing method of flushing water in PVC paste resin production | |
| CN103121741A (en) | Treatment method of filter backwash wastewater | |
| CN206156907U (en) | Sewage treatment system is arranged in thermal power plant's circulation | |
| Fu | Lead and zinc smelting wastewater treatment and reclamation by coagulation-flocculation-sedimentation, ultrafiltration and reverse osmosis technique | |
| CN205347076U (en) | Contain salt sewage treatment system | |
| CN213266029U (en) | Treatment system for coal chemical industry circulating water sewage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |
|
| RJ01 | Rejection of invention patent application after publication |