CN203159368U - Wastewater treatment system for nano calcium carbonate production - Google Patents
Wastewater treatment system for nano calcium carbonate production Download PDFInfo
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- CN203159368U CN203159368U CN 201320162222 CN201320162222U CN203159368U CN 203159368 U CN203159368 U CN 203159368U CN 201320162222 CN201320162222 CN 201320162222 CN 201320162222 U CN201320162222 U CN 201320162222U CN 203159368 U CN203159368 U CN 203159368U
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- calcium carbonate
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Abstract
The utility model discloses a wastewater treatment system for nano calcium carbonate production, which comprises a coagulative precipitation tank and a filter chamber, wherein the coagulative precipitation tank is connected with the wastewater outlet end of nano calcium carbonate production, the filter chamber is connected with the recycled water end of nano calcium carbonate production, and an inorganic membrane filter for filtering oil and macromolecule organics is arranged on a pipeline between the output end of the filter chamber and the recycled water end of nano calcium carbonate production. The wastewater treatment system has the advantages of having a simple and compact structure, being low in cost and convenient in operation, discharging wastewater of standard quality, meeting the requirements on the quality of recycled water, guaranteeing the quality of products and the like.
Description
Technical field
The utility model is mainly concerned with the sewage treatment equipment field, refers in particular to a kind of waste water treatment and reclaiming system that is applicable to that nano-calcium carbonate is produced.
Background technology
In the production project of nano-calcium carbonate, the waste water that produces is mainly sanitary sewage, gas washing waste water and filter press waste water.Wherein, gas washing waste water and filter press waste water generation are very big.Because gas washing waste water slant acidity contains calcium, magnesium ion in the filter press waste water, the water quality meta-alkalescence directly discharges not only contaminate environment, and water resource waste is serious, therefore must handle and reuse.
At present, sanitary sewage adopts existing domestic sewage processing system individual curing, and gas washing waste water and filter press waste water then adopt traditional Waste Water Treatment to handle.Traditional Waste Water Treatment is earlier gas washing waste water and filter press waste water mixing back to be precipitated in settling tank, and throw out can dig out does material of construction usefulness, and supernatant liquor then effluxes.Adopt this system can be with the control of the pH value of waste water 6 ~ 8, satisfied in the wastewater discharge standard requirement to the pH value substantially.Therefore but adopt this system that oily substance and larger molecular organics in the filter press waste water are removed, can't satisfy in the wastewater discharge standard index request to such material.In addition, because the nano-calcium carbonate technical requirement is extremely harsh, the oily substance in the filter press waste water and larger molecular organics are not treated, and just directly recycling will be to the greatly influence of quality generation of nano-calcium carbonate.Therefore, adopt conventional waste water disposal system obviously can't satisfy the requirement of discharged wastewater met the national standard and reuse.
The utility model content
The technical problems to be solved in the utility model just is: at the technical problem that prior art exists, the utility model provide a kind of simple and compact for structure, with low cost, easy and simple to handle, the efflux wastewater water quality reaching standard stable, can satisfy the reuse water quality requirement and can guarantee the Waste Water Treatment that nano-calcium carbonate is produced that is used for of advantages such as product quality.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of Waste Water Treatment for nano-calcium carbonate production, comprise coagulative precipitation tank and filter tank, described coagulative precipitation tank links to each other with the wastewater effluent end that nano-calcium carbonate is produced, described filter tank links to each other with the reuse water end (W.E.) that nano-calcium carbonate is produced, and the pipeline between the reuse water end (W.E.) of the output terminal in described filter tank and nano-calcium carbonate production is provided with to filter the inorganic membrane filtration device of oils and larger molecular organics.
As further improvement of the utility model:
Be provided with equalizing tank between the wastewater effluent end of described coagulative precipitation tank and nano-calcium carbonate production.
Be provided with former pond between the reuse water end (W.E.) of the output terminal in described filter tank and nano-calcium carbonate production, described inorganic membrane filtration device is arranged on the pipeline afterwards of former pond.
Be provided with clean water basin between the reuse water end (W.E.) of the output terminal in described filter tank and nano-calcium carbonate production, described inorganic membrane filtration device is arranged on the clean water basin pipeline before.
Be provided with clean water basin between the reuse water end (W.E.) of the output terminal in described filter tank and nano-calcium carbonate production, described clean water basin are positioned at after the former pond, and described inorganic membrane filtration device is arranged on the pipeline between former pond and the clean water basin.
Be provided with first back-purge system between described former pond and the filter tank, the water shoot of described first back-purge system is connected with equalizing tank; Described first back-purge system with the filter in the former pond after water back flushing is carried out in the filter tank, the draining after the back flushing enters equalizing tank.
On the pipeline before the described inorganic membrane filtration device accurate filter is set.
Between described clean water basin and the inorganic membrane filtration device second back-purge system is set, the water shoot of described second back-purge system is communicated with former pond; Described second back-purge system carries out back flushing with the clear water in the clean water basin to the inorganic membrane filtration device, and the draining after the back flushing enters former pond.
Described inorganic membrane filtration device adopts the ceramic membrane filter device.
The membrane pore size scope of described inorganic membrane filtration device is 10nm～0.8 μ m.
Described coagulative precipitation tank links to each other with chemicals dosing plant.
Described coagulative precipitation tank links to each other with the sludge treatment assembly by sludge pump, described sludge treatment assembly comprises sludge thickener, mud storage pond, mud lift pump, the sludge dewatering equipment that links to each other successively through pipeline, and described supernatant liquor in sludge dewatering equipment is sent into equalizing tank through pipeline.
Compared with prior art, advantage of the present utility model is: the utility model is used for the Waste Water Treatment that nano-calcium carbonate is produced, simple and compact for structure, easy to use, after this treatment system processing, can make on the one hand vegetable and animals oils that technology such as traditional oil removal, biochemistry can't remove and the larger molecular organics etc. can the stably reaching standard discharging, anti-load impact ability be strong; On the other hand, can make the water after the processing satisfy technology reuse requirement, not influence the quality of product nano-calcium carbonate.
Description of drawings
Fig. 1 is structural principle synoptic diagram of the present utility model.
Fig. 2 is the workflow principle schematic of the utility model in concrete application example.
Marginal data:
1, equalizing tank; 2, coagulative precipitation tank; 3, filter tank; 4, former pond; 5, lift pump; 6, accurate filter; 7, inorganic membrane filtration device; 8, clean water basin; 9, sludge thickener; 10, mud storage pond; 11, sludge dewatering equipment; 12, sludge pump; 13, mud lift pump; 14, chemicals dosing plant; L1, sewer pipeline; L2, mud pipeline; L3, back flushing pipeline; L4, sludge thickener supernatant liquor and sludge dewatering supernatant liquor pipeline.
Embodiment
Below with reference to Figure of description and specific embodiment the utility model is described in further details.
As depicted in figs. 1 and 2, Waste Water Treatment for nano-calcium carbonate production of the present utility model, as preferred embodiment, this Waste Water Treatment comprises the equalizing tank 1 that links to each other successively in this example, coagulative precipitation tank 2, filter tank 3, former pond 4 and clean water basin 8, equalizing tank 1 links to each other with the wastewater effluent end that nano-calcium carbonate is produced, clean water basin 8 link to each other with the reuse water end (W.E.) that nano-calcium carbonate is produced, between former pond 4 and the clean water basin 8 accurate filter 6 is set, inorganic membrane filtration device 7, wherein mostly mineral membrane is with metal, metal oxide, pottery, sintered glass is that material passes through chemistry, casting and rolling technique manufacturing, inorganic membrane filtration device 7 adopts the ceramic membrane filter device in this example.Filter by the ceramic membrane filter device, can remove micron-sized particle and vegetable and animals oils and larger molecular organics in the waste water.Ceramic membrane filter device of the present utility model is a kind of cross flow filter system, and namely the inorganic ceramic film separating system is used for further removing oils and larger molecular organics in the waste water.The inorganic ceramic film separating system mainly is to rely on rete that particle diameter is retained down the purpose that reaches separation greater than the material of membrane pore size; This inorganic ceramic film chemical stability is good, high temperature resistant, and the physical strength height is high pressure resistant, and good wear-resisting, abrasion resistance energy are arranged; Pore size distribution is narrow, separation performance good, infiltration capacity is big; Can clean repeatedly, regenerate.Behind the ceramic membrane filter device in the utility model, the COD clearance is more than 98%, and the vegetable and animals oils clearance also can be more than 98%.
Each strand waste water at first enters equalizing tank 1 and converges, and carries out the homogenizing of water quality and the water yield.When concrete the application, according to actual needs, when the big flow waste water of multiply enters this system, for the homogenizing water quality and quantity, need establish equalizing tank 1; When having only one waste water to enter this system, perhaps multiply waste water enters system but wherein one waste water water yield is bigger, and all the other waste water water yields are not more established equalizing tank 1.
In the present embodiment, comprise PAC chemicals dosing plant and PAM chemicals dosing plant through chemicals dosing plant 14() in coagulative precipitation tank 2, add medicament, with the suspended substance and the most of heavy metal ion that remove in the waste water 60%.
In the present embodiment, the bottom of coagulative precipitation tank 2 links to each other with the sludge treatment assembly by sludge pump 12, the sludge treatment assembly comprises sludge thickener 9, mud storage pond 10, mud lift pump 13, the sludge dewatering equipment 11 that links to each other successively through pipeline, and the bed mud in the coagulative precipitation tank 2 regularly can drain in the sludge treatment assembly and handle and dispose.Mud cake behind sludge dewatering equipment 11 is transported outward away, and the supernatant liquor after the desliming can be sent in the equalizing tank 1 by pipeline and handles again.
The water outlet of coagulative precipitation tank 2 enters filter tank 3, and the filteration by filter tank 3 is to remove in the water outlet 90% fine suspension.Water enters former pond 4 and stores after the filter after filter in filter tank 3.When concrete the application, according to actual needs, when filter tank 3 water outlet pressure heads satisfy inorganic membrane filtration device 7 intake pressures, do not establish former pond 4; Otherwise, establish former pond 4.In the present embodiment, be provided with a cover first back-purge system between former pond 4 and filter tank 3, the water shoot of this first back-purge system is connected with equalizing tank 1.When the head loss in filter tank 3 reaches certain value, water carries out back flushing to filter tank 3 after utilizing filter in the former pond 4 by first back-purge system, draining after the back flushing enters equalizing tank 1, and enters whole process system after waste water in the equalizing tank 1 mixes and handles again.When not establishing former pond 4, can utilize extraneous water that back flushing is carried out in filter tank 3, the draining after the back flushing enters equalizing tank 1; When not establishing former pond 4 and equalizing tank 1, can utilize extraneous water that back flushing is carried out in filter tank 3, the draining after the back flushing enters coagulative precipitation tank 2.
In the present embodiment; lift pump 5 is set pipeline between former pond 4 and ceramic membrane filter device and accurate filter 6(claims the strainer of ensuring public security again); water in the former pond 4 at first enters accurate filter 6 and filters after lift pump 5 promotes; remove in the waste water impurity such as suspended substance, particulate matter and colloidal particle greater than 5 μ m, to protect follow-up ceramic membrane filter device.Product water after accurate filter 6 filters filters by the ceramic membrane filter device again, removes micron-sized particle and vegetable and animals oils and larger molecular organics in the waste water.When concrete the application, according to actual needs, when the solid grain size of advancing the ceramic membrane filter device during greater than 0.8 μ m, establish 6 pairs of ceramic membrane filter devices of accurate filter and protect; Otherwise, need not establish.If under the situation that does not have former pond 4, also can directly accurate filter 6 be connected in the ceramic membrane filter device and get final product before.
When more and pressure does not wait when the reuse water water supply point, establish clean water basin 8; All the other situations are not established.In this example, finally enter clean water basin 8 through the product water of ceramic membrane filter device, carry out reuse according to the needs at each position of production technique; The dope that produces can reclaim according to arts demand.Further between clean water basin 8 and ceramic membrane filter device second back-purge system is set in the present embodiment, the water shoot of this second back-purge system is communicated with former pond 4.When the inlet tube and outlet tube pressure reduction of ceramic membrane filter device reaches certain value, can utilize the clear water in the clean water basin 8 that the ceramic membrane in the ceramic membrane filter device is carried out back flushing by second back-purge system, draining after the back flushing enters former pond 4, in order to handle again.When not establishing clean water basin 8, can utilize extraneous water that the ceramic membrane filter device is carried out back flushing, the water shoot after the back flushing is communicated with former pond 4; When not establishing clean water basin 8 and former pond 4, can utilize extraneous water that the ceramic membrane filter device is carried out back flushing, the water shoot after the back flushing directly is communicated with equalizing tank 1; When not establishing equalizing tank 1, clean water basin 8 and former pond 4, can utilize extraneous water that the ceramic membrane filter device is carried out back flushing, the water shoot after the back flushing directly is communicated with coagulative precipitation tank 2.
In a concrete application example, be example with the nano-calcium carbonate the second stage of the project wastewater treatment of certain factory, this project total water amount is 14548.5m
3/ d, wherein filter press waste water generation about 8000m roughly
3/ d as with fully recovering after this part wastewater treatment, then can save and produce new water consumption 8000m every day
3, can save great amount of water resources on the one hand, can reduce the pollution to surrounding enviroment on the other hand greatly.The water quality characteristic of filter press waste water sees for details shown in the following table 1:
Table 1 filter press waste water quality mark sheet (unit: mg/L)
| Project | COD | SS | Vegetable and animals oils | Anion surfactant | The pH value |
| Influent quality | ≥300 | ≥60 | ≥10 | ≥5 | 6~10 |
After adopting above-mentioned treatment system of the present utility model to handle, this filter press waste water can satisfy (DB44/26-2001) the second period primary standard of standard " water pollutant emission limit " on the one hand, satisfies the requirement of this project production technique on the other hand simultaneously.Its effluent quality is detailed to be shown in Table 2.
Effluent quality table (unit: mg/L) after the wastewater treatment of table 2 filter press
| Project | COD | SS | Vegetable and animals oils | Anion surfactant | The pH value |
| Effluent quality | ≤60 | <10 | ≤0.5 | <0.5 | 6~9 |
Below only be preferred implementation of the present utility model, protection domain of the present utility model also not only is confined to above-described embodiment, and all technical schemes that belongs under the utility model thinking all belong to protection domain of the present utility model.Should be pointed out that for those skilled in the art the some improvements and modifications not breaking away under the utility model principle prerequisite should be considered as protection domain of the present utility model.
Claims (12)
1. one kind is used for the Waste Water Treatment that nano-calcium carbonate is produced, comprise coagulative precipitation tank (2) and filter tank (3), described coagulative precipitation tank (2) links to each other with the wastewater effluent end that nano-calcium carbonate is produced, described filter tank (3) links to each other with the reuse water end (W.E.) that nano-calcium carbonate is produced, it is characterized in that the pipeline between the output terminal of described filter tank (3) and the reuse water end (W.E.) of nano-calcium carbonate production is provided with to filter the inorganic membrane filtration device (7) of oils and larger molecular organics.
2. the Waste Water Treatment for nano-calcium carbonate production according to claim 1 is characterized in that, is provided with equalizing tank (1) between the wastewater effluent end of described coagulative precipitation tank (2) and nano-calcium carbonate production.
3. the Waste Water Treatment of producing for nano-calcium carbonate according to claim 1, it is characterized in that, be provided with former pond (4) between the output terminal in described filter tank (3) and the reuse water end (W.E.) of nano-calcium carbonate production, described inorganic membrane filtration device (7) is arranged on the pipeline afterwards of former pond (4).
4. the Waste Water Treatment of producing for nano-calcium carbonate according to claim 1, it is characterized in that, be provided with clean water basin (8) between the output terminal in described filter tank (3) and the reuse water end (W.E.) of nano-calcium carbonate production, described inorganic membrane filtration device (7) is arranged on clean water basin (8) pipeline before.
5. the Waste Water Treatment of producing for nano-calcium carbonate according to claim 3, it is characterized in that, be provided with clean water basin (8) between the output terminal in described filter tank (3) and the reuse water end (W.E.) of nano-calcium carbonate production, described clean water basin (8) are positioned at former pond (4) afterwards, and described inorganic membrane filtration device (7) is arranged on the pipeline between former pond (4) and the clean water basin (8).
6. according to claim 3 or 5 described Waste Water Treatments for nano-calcium carbonate production, it is characterized in that, be provided with first back-purge system between described former pond (4) and filter tank (3), the water shoot of described first back-purge system is connected with equalizing tank (1); Described first back-purge system with the filter in former pond (4) after water filter tank (3) are carried out back flushing, the draining after the back flushing enters equalizing tank (1).
7. according to claim 1 or 2 or 3 or 4 or 5 described Waste Water Treatments for nano-calcium carbonate production, it is characterized in that, on described inorganic membrane filtration device (7) pipeline before accurate filter (6) is set.
8. the Waste Water Treatment of producing for nano-calcium carbonate according to claim 5, it is characterized in that, between described clean water basin (8) and the inorganic membrane filtration device (7) second back-purge system is set, the water shoot of described second back-purge system is communicated with former pond (4); Described second back-purge system carries out back flushing with the clear water in the clean water basin (8) to inorganic membrane filtration device (7), and the draining after the back flushing enters former pond (4).
9. according to any described Waste Water Treatment for nano-calcium carbonate production in the claim 1～5, it is characterized in that described inorganic membrane filtration device (7) adopts the ceramic membrane filter device.
10. according to any described Waste Water Treatment for nano-calcium carbonate production in the claim 1～5, it is characterized in that the membrane pore size scope of described inorganic membrane filtration device (7) is 10nm～0.8 μ m.
11. the Waste Water Treatment for nano-calcium carbonate production according to claim 1 is characterized in that described coagulative precipitation tank (2) links to each other with chemicals dosing plant (14).
12. the Waste Water Treatment for nano-calcium carbonate production according to claim 1, it is characterized in that, described coagulative precipitation tank (2) links to each other with the sludge treatment assembly by sludge pump (12), described sludge treatment assembly comprises sludge thickener (9), mud storage pond (10), mud lift pump (13), the sludge dewatering equipment (11) that links to each other successively through pipeline, and described supernatant liquor in sludge dewatering equipment (11) is sent into equalizing tank (1) through pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320162222 CN203159368U (en) | 2013-04-03 | 2013-04-03 | Wastewater treatment system for nano calcium carbonate production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320162222 CN203159368U (en) | 2013-04-03 | 2013-04-03 | Wastewater treatment system for nano calcium carbonate production |
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| CN203159368U true CN203159368U (en) | 2013-08-28 |
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| CN 201320162222 Expired - Lifetime CN203159368U (en) | 2013-04-03 | 2013-04-03 | Wastewater treatment system for nano calcium carbonate production |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523813A (en) * | 2013-10-22 | 2014-01-22 | 山西兰花华明纳米材料有限公司 | Industrial preparation method of producing nano calcium carbonate by recycling filter-pressing water |
| CN105540813A (en) * | 2015-12-25 | 2016-05-04 | 广西华纳新材料科技有限公司 | Nano calcium carbonate filter pressing wastewater treatment method and equipment |
| CN109110786A (en) * | 2017-06-22 | 2019-01-01 | 上海氯德新材料科技有限公司 | The method of micro-calcium is removed in sodium carbonate purification |
| CN112661328A (en) * | 2020-11-27 | 2021-04-16 | 杭州正和纳米科技有限公司 | Production press filtration water treatment process |
-
2013
- 2013-04-03 CN CN 201320162222 patent/CN203159368U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523813A (en) * | 2013-10-22 | 2014-01-22 | 山西兰花华明纳米材料有限公司 | Industrial preparation method of producing nano calcium carbonate by recycling filter-pressing water |
| CN105540813A (en) * | 2015-12-25 | 2016-05-04 | 广西华纳新材料科技有限公司 | Nano calcium carbonate filter pressing wastewater treatment method and equipment |
| CN109110786A (en) * | 2017-06-22 | 2019-01-01 | 上海氯德新材料科技有限公司 | The method of micro-calcium is removed in sodium carbonate purification |
| CN109110786B (en) * | 2017-06-22 | 2020-11-10 | 上海氯德新材料科技有限公司 | Method for removing trace calcium in sodium carbonate refining |
| CN112661328A (en) * | 2020-11-27 | 2021-04-16 | 杭州正和纳米科技有限公司 | Production press filtration water treatment process |
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| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20130828 |