CN208776506U - High ammonia-containing water zero-discharge treatment system in nano-titanium dioxide production - Google Patents
High ammonia-containing water zero-discharge treatment system in nano-titanium dioxide production Download PDFInfo
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- CN208776506U CN208776506U CN201821331011.8U CN201821331011U CN208776506U CN 208776506 U CN208776506 U CN 208776506U CN 201821331011 U CN201821331011 U CN 201821331011U CN 208776506 U CN208776506 U CN 208776506U
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Abstract
High ammonia-containing water zero-discharge treatment system in nano-titanium dioxide production, the system have the wastewater equalization pond successively to connect, pretreatment unit, ultrafilter purifier, acid-base neutralization device, cartridge filter, film pre-concentration device, concentration liquid storage tank, evaporation concentration device and crystallization apparatus.The achievable following treatment process of processing system provided by the utility model: after high ammonia-containing water is collected into conditioning tank, first handled by pretreatment unit, then it is handled by ultrafilter purifier, it enters back into acid-base neutralization device, ammonium sulfate is obtained after being neutralized by sulfuric acid, ammonium sulfate is filtered by cartridge filter, then by film pre-concentration device pre-concentration, then into concentration liquid storage tank, it enters back into evaporation concentration device and is concentrated to saturation, it is finally flowed into crystallization apparatus and crystallizes, crystallized product is solid ammonium sulfate.
Description
Technical field
The utility model relates to wastewater processing technology, high ammonia-containing water processing in specifically a kind of titanium dioxide production
System.
Background technique
Titanium dioxide (TiO2) is a kind of important chemical products, in coating, ink, papermaking, plastic, rubber, chemical fibre, ceramics
Deng industry in have important use.Currently, mostly using Titanium White Production By Sulfuric Acid Process, this method can generate a large amount of waste water, according to statistics,
Every production 1t titanium dioxide can produce 40~60t of waste water.Especially, during using Production By Sulfuric Acid Process Nano titanium dioxide,
25% ammonium hydroxide need to be used to neutralize the sulfuric acid in metatitanic acid to pH value as 7-8, after being filtered, washed, calcining obtains nanoscale
Titanium dioxide, whole process can generate a large amount of strong ammonia wastewater (2-5%), and processing difficulty is higher, to enterprise's production and ring
Guarantor brings immense pressure.
Currently, ammonia nitrogen waste water processing both at home and abroad has break point chlorination, chemical precipitation method, ion-exchange, blow-off method and life
A variety of methods such as object deamination method, the existing shortcoming of these methods is: investment is big, operating cost is high；It is extremely difficult to discharge standard；Easily
Generate secondary pollution.And these methods are only applicable to the processing of Low Concentration Ammonia Containing Wastewater, are not suitable for high-concentration ammonia nitrogenous wastewater.
Utility model content
The purpose of the utility model is to provide a kind of nano-titanium dioxide production in high ammonia-containing water zero-discharge treatment system,
The waste water treatment system can effectively locate the generated waste water containing ammonia nitrogen in high density in nano-titanium dioxide production
Reason.
To achieve the above object, the utility model uses following scheme: high ammonia-containing water zero in nano-titanium dioxide production
Discharge treating system, the system have wastewater equalization pond, pretreatment unit, ultrafilter purifier, acid-base neutralization device, ensured public security
Filter, film pre-concentration device, concentration liquid storage tank, evaporation concentration device and crystallization apparatus, the outlet of wastewater equalization pond pass through first
Valve, the first booster pump connect with the import of pretreatment unit, and the outlet of pretreatment unit is net by the second booster pump and ultrafiltration
Disguise the import set to connect, the outlet of ultrafilter purifier connects with the import of acid-base neutralization device, and acid-base neutralization device goes out
Mouthful connect by the second valve, third booster pump with the import of cartridge filter, the outlet of cartridge filter by high-pressure pump and
The import of film pre-concentration device connects, and the outlet of film pre-concentration device is connected by third valve with the import of concentration liquid storage tank,
The outlet of concentration liquid storage tank is connected by the 4th booster pump with the import of evaporation concentration device, the outlet of evaporation concentration device and knot
The import of brilliant device connects.
By above scheme as it can be seen that processing system provided by the utility model is to the high ammonia-containing water generated in titanium white production
It is handled, achievable following treatment process: after high ammonia-containing water is collected into conditioning tank, being first driven into pretreatment unit progress
Pretreatment, is then driven into ultrafilter purifier and is handled, entered back into acid-base neutralization device, obtained after being neutralized by sulfuric acid
Ammonium sulfate is squeezed into cartridge filter filtering by ammonium sulfate, then squeezes into film pre-concentration device again, pre-concentration is to centainly
Concentration liquid storage tank is entered after concentration, then pre-concentration liquid is driven into evaporation concentration device and is concentrated to saturated concentration, is finally flowed into
It is crystallized into crystallization apparatus, crystallized product is solid ammonium sulfate.
Rationally, the effect for handling the waste water containing ammonia nitrogen is good for the utility model composition, is a kind of reason for realizing wastewater zero discharge
Think processing system.
Figure of description
The structural schematic diagram of Fig. 1 an embodiment of the present invention.
Specific embodiment
Leading to examples and drawings below, the utility model is described in further detail.
Referring to Fig. 1
High ammonia-containing water zero-discharge treatment system has waste water tune in nano-titanium dioxide production provided by the utility model
Save pond 1, pretreatment unit 4, ultrafilter purifier 6, acid-base neutralization device 8, cartridge filter 11, film pre-concentration device 13, dense
The outlet of contracting liquid storage tank 16, evaporation concentration device 18 and crystallization apparatus 19, wastewater equalization pond 1 is pressurized by the first valve 2, first
Pump 3 connects with the import of pretreatment unit 4, and the outlet of pretreatment unit 4 passes through the second booster pump 5 and ultrafilter purifier 6
Import connects, and the outlet of ultrafilter purifier 6 connects with the import of acid-base neutralization device 8, and the outlet of acid-base neutralization device 8 passes through
Second valve 9, third booster pump 10 connect with the import of cartridge filter 11, and the outlet of cartridge filter 11 passes through high-pressure pump
12 connect with the import of film pre-concentration device 13, and the outlet of film pre-concentration device 13 passes through third valve 15 and concentration liquid storage tank 16
Import connect, concentration liquid storage tank 16 outlet connected by the 4th booster pump 17 with the import of evaporation concentration device 18, evaporation
The outlet of enrichment facility 18 connects with the import of crystallization apparatus 19.
In the present embodiment, for the regurgitant volume for controlling ultrafiltration apparatus 6, it is arranged on the return line of ultrafiltration film purifying device 6
There is valve 7, for the reflux ratio of concentrate in control film pre-concentration device 13, is arranged on the return line of film pre-concentration device
There is valve 14.
In the present embodiment, the pretreatment unit 4 is sand filter；The ultrafilter purifier 6 is tubular ultra-filtration membrane
Device；The acid-base neutralization device 8 is furnished with dasher 8a；The film of film pre-concentration device 13 is reverse osmosis membrane；It evaporates dense
Compression apparatus 18 is MVR evaporator；Crystallization apparatus 19 is guide shell-baffle crystallizing evaporator.
The above is only specific embodiment of the present utility model, it is noted that for the ordinary skill people of this field
For member, without departing from the principle of this utility model, several changes can also be carried out to the technical solution of the utility model
Shape or equivalent replacement, these also should be regarded as belonging to the protection scope of the utility model.
Claims (7)
1. high ammonia-containing water zero-discharge treatment system in nano-titanium dioxide production, it is characterised in that: the system has waste water tune
Save pond, pretreatment unit, ultrafilter purifier, acid-base neutralization device, cartridge filter, film pre-concentration device, concentration liquid storage tank,
The outlet of evaporation concentration device and crystallization apparatus, wastewater equalization pond passes through the first valve, the first booster pump and pretreatment unit
Import connects, and the outlet of pretreatment unit is connected by the second booster pump with the import of ultrafilter purifier, ultrafilter purifier
Outlet connect with the import of acid-base neutralization device, the outlet of acid-base neutralization device is by the second valve, third booster pump and protects
The import of peace filter connects, and the outlet of cartridge filter is connected by high-pressure pump with the import of film pre-concentration device, and film is pre- dense
The outlet of compression apparatus is connected by third valve with the import of concentration liquid storage tank, and the outlet that liquid storage tank is concentrated passes through the 4th booster pump
Connect with the import of evaporation concentration device, the outlet of evaporation concentration device connects with the import of crystallization apparatus.
2. high ammonia-containing water zero-discharge treatment system in nano-titanium dioxide production as described in claim 1, it is characterised in that:
The pretreatment unit is one of sand filter, rectangular mesh screen, centrifuge.
3. high ammonia-containing water zero-discharge treatment system in nano-titanium dioxide production as described in claim 1, it is characterised in that:
The ultrafilter purifier is tubular ultra-filtration membrane device, roll-to-roll ultrafiltration film device or hollow fiber uf membrane system.
4. high ammonia-containing water zero-discharge treatment system in nano-titanium dioxide production as described in claim 1, it is characterised in that:
The acid-base neutralization device is furnished with dasher.
5. high ammonia-containing water zero-discharge treatment system in nano-titanium dioxide production as described in claim 1, it is characterised in that:
Film used in film pre-concentration device can be reverse osmosis membrane, disc tube reverse osmosis (dt-ro) film or forward osmosis membrane.
6. high ammonia-containing water zero-discharge treatment system in nano-titanium dioxide production as described in claim 1, it is characterised in that:
Evaporation concentration device is MVR evaporator.
7. high ammonia-containing water zero-discharge treatment system in nano-titanium dioxide production as described in claim 1, it is characterised in that:
Crystallization apparatus is guide shell-baffle crystallizing evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821331011.8U CN208776506U (en) | 2018-08-17 | 2018-08-17 | High ammonia-containing water zero-discharge treatment system in nano-titanium dioxide production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821331011.8U CN208776506U (en) | 2018-08-17 | 2018-08-17 | High ammonia-containing water zero-discharge treatment system in nano-titanium dioxide production |
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| CN208776506U true CN208776506U (en) | 2019-04-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110723799A (en) * | 2019-11-18 | 2020-01-24 | 中核核电运行管理有限公司 | Nuclear power unit conventional island ammonia-containing wastewater collection and discharge device and method |
| CN111892222A (en) * | 2020-07-31 | 2020-11-06 | 龙蟒佰利联集团股份有限公司 | Ammonium sulfate wastewater recycling method |
| CN116177779A (en) * | 2022-12-09 | 2023-05-30 | 四川大学 | Recycling method of titanium white wastewater |
| CN116177779B (en) * | 2022-12-09 | 2024-04-19 | 四川大学 | Recycling method of titanium white wastewater |
-
2018
- 2018-08-17 CN CN201821331011.8U patent/CN208776506U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110723799A (en) * | 2019-11-18 | 2020-01-24 | 中核核电运行管理有限公司 | Nuclear power unit conventional island ammonia-containing wastewater collection and discharge device and method |
| CN111892222A (en) * | 2020-07-31 | 2020-11-06 | 龙蟒佰利联集团股份有限公司 | Ammonium sulfate wastewater recycling method |
| CN111892222B (en) * | 2020-07-31 | 2023-08-22 | 龙佰集团股份有限公司 | Ammonium sulfate wastewater recycling method |
| CN116177779A (en) * | 2022-12-09 | 2023-05-30 | 四川大学 | Recycling method of titanium white wastewater |
| CN116177779B (en) * | 2022-12-09 | 2024-04-19 | 四川大学 | Recycling method of titanium white wastewater |
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