CN104556485A - High-efficiency oil removal and turbidity removal device and oil-containing and turbidity-containing wastewater treatment process - Google Patents
High-efficiency oil removal and turbidity removal device and oil-containing and turbidity-containing wastewater treatment process Download PDFInfo
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- CN104556485A CN104556485A CN201510000897.2A CN201510000897A CN104556485A CN 104556485 A CN104556485 A CN 104556485A CN 201510000897 A CN201510000897 A CN 201510000897A CN 104556485 A CN104556485 A CN 104556485A
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- Prior art keywords
- water
- tank body
- communicated
- oil
- removing dirt
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004065 wastewater treatment Methods 0.000 title claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 238000001914 filtration Methods 0.000 claims abstract description 25
- 239000010802 sludge Substances 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 238000011001 backwashing Methods 0.000 claims abstract description 9
- 238000004062 sedimentation Methods 0.000 claims abstract description 6
- 238000005352 clarification Methods 0.000 claims abstract description 4
- 239000003245 coal Substances 0.000 claims description 18
- 238000005238 degreasing Methods 0.000 claims description 17
- 239000006004 Quartz sand Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 13
- 239000003830 anthracite Substances 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 11
- 239000002351 wastewater Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 230000001112 coagulating effect Effects 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000005189 flocculation Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 22
- 230000000694 effects Effects 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000007306 turnover Effects 0.000 description 4
- 239000010865 sewage Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a high-efficiency oil removal and turbidity removal device. The high-efficiency oil removal and turbidity removal device has an integrated tank body structure; a water inlet mixing reactor and a clarifying device are arranged at the upper part of the tank body; a sludge collecting and discharging device is arranged at the middle part of the tank body; a filter and a backwashing system are arranged at the lower part of the tank body. According to the device, a chemical oil removal device and a high-speed filter are integrated; a hot water tank and a conveying pump are not required to be matched; the occupied area is small; the project investment is greatly reduced; the operating cost is reduced. The device integrates the functions of coagu-flocculation reaction, clarification and sedimentation, sludge discharging, filtering, backwashing and the like; the operating, backwashing and sludge discharging processes of the system is controlled by a PLC by matching an full-automatic control system; the operating, sludge discharging and backwashing processes of all pieces of equipment can be completed by operating on a matched control of the equipment; the operation is convenient; the automation degree is high; the water outlet quality is higher than a technical standard requirement.
Description
Technical field
The present invention relates to field of environment protection equipment, especially a kind of efficient degreasing separator for removing dirt and oil-containing are containing turbid wastewater treatment process.
Background technology
The oil-containing produced for iron and steel enterprise's continuous casting hot rolling workshop contains turbid wastewater, adopt at present usually chemical oil remover and high rate filter two to overlap independently device to connect and carry out water treatment, need between the two to utilize pump to carry out fluid conveying, and hot tub is set as intermediate pool.This water technology support equipment is more, and floor space is large, and the long-time running power consumption of pump is comparatively large, adds the cost of operation.Chemical oil remover volume is large, and must carry out assembled welding at the scene, the site operation cycle is long.Square storage bucket inside easily produces dead angle, and spoil disposal is not thorough.High rate filter needs independent supporting backwash water pump; High rate filter backwash time about 10 ~ 15min, for the strainer of diameter 4m, single backwash water consumption about 113 ~ 169m
3/ h.Staff needs to operate the operation of chemical oil remover and high rate filter respectively, and operating area is comparatively large, controls more complicated.
Summary of the invention
The applicant contains turbid wastewater treatment facility structure for above-mentioned existing oil-containing and operates the shortcomings such as comparatively complicated, there is provided a kind of efficient degreasing separator for removing dirt rational in infrastructure and oil-containing containing turbid wastewater treatment process, thus by oil removing and turbidity removal function i ntegration in same equipment, floor space is little, and running cost is low.
The technical solution adopted in the present invention is as follows:
A kind of efficient degreasing separator for removing dirt is the tank structure integrated, and tank body top is water inlet mixing reactor and clarifying plant, and middle part is collection mud discharging device, and bottom is strainer and backwashing system.
Further improvement as technique scheme:
Described water inlet mixing reactor forms double-skin duct by pipe core and outer tube, is communicated with bottom pipe core with water inlet pipe, and pipe core top is communicated with outer tube, and outer sleeve bottom is provided with the diffusion shell of taper; Described clarifying plant is in the filler cavity on top, and filler central authorities are provided with top water storage cavity and are communicated with the water distributor of tank body lower part by vertical downcomer; Described collection mud discharging device is be arranged on the taper sludge hopper into below water mixing reactor, be communicated to the mud discharging mouth of tank body side by shore pipe bottom sludge hopper, tank body is divided into up and down independently two portions by described sludge hopper, and downcomer is the unique passage being communicated with top and the bottom cavity.
Water distributor and drop leg in described strainer, the below that anthracite coal measure, quartz sand layer and supporting layer are arranged in water distributor from top to bottom successively forms filtering layer, filtering layer is stacked on porous filter plate, porous filter plate plate face is furnished with several water caps, porous filter plate is supported on tank body lower part by filter plate bracing frame, porous filter plate arranged beneath has the gas distribution pipe be communicated with compressed air inlet, and tank base is provided with water outlet.
Described anthracite coal measure thickness is 350 ~ 450mm, adopts particle diameter to be the hard coal of 2 ~ 4mm; Quartz sand layer thickness is 250 ~ 350mm, adopts particle diameter to be the quartz sand of 1 ~ 2mm; Supporting layer thickness is 150 ~ 250mm, adopts particle diameter to be the cobble of 2 ~ 8mm.
Described anthracite coal measure can use hard coal, nut-shell or haydite.
A kind of oil-containing using above-mentioned efficient degreasing separator for removing dirt to carry out is containing turbid wastewater treatment process, first oil-containing pumps into line mixer by pump containing turbid wastewater after whirling well, PAC and PAM is added respectively in line mixer, produce coagulating, then described efficient degreasing separator for removing dirt is promoted to, in the middle part of tank body, water inlet pipe enters, after coagulating, clarification sedimentation, spoil disposal and filtration, discharged by the water outlet at the bottom of tank, described water outlet utilizes the direct backwater of overbottom pressure to cooling tower to carry out cooling process, then from flowing to the reuse of turbid circulating water pond.
Beneficial effect of the present invention is as follows:
Chemical oil remover and high rate filter unite two into one by the present invention, and do not need matched with hot pond and transferpump, floor space is little, greatly cost saving, reduces running cost.The present invention will be intake the devices such as mixing reactor, clarifying plant, collection mud device, sludge drainage system, water distribution system, backwashing system, gas distribution, be integrated into unified device, 4000(containing) following efficient degreasing separator for removing dirt can complete in factory, rear access respective line in place can put into operation at the scene, and installation period is short.The present invention is the backwash of origin formula, and do not need other supporting backwashing pump, system energy consumption is little; The backwash time only needs 5 minutes, for the filtration tank of diameter 4m, and single backwash water consumption about 26 ~ 36m
3/ h.Zhu Ni district is conical, and inner without dead angle, spoil disposal is thorough rapidly.The present invention integrates the function such as coagulating, clarification sedimentation, spoil disposal, filtration, backwash, by supporting full-automatic control system, by the operation of PLC control system, backwash and spoil disposal process, only need operate on coordinative composition of equipments controlling box can complete all devices operation, spoil disposal, backwash process, operation is convenient, and level of automation is high.
Lower filter of the present invention mainly utilizes the anthracite coal measure on filtering layer top to play and filters a section dirty effect, and quartz sand layer only has top layer to participate in filtration, utilize this feature, the present invention is relative to high rate filter, thickness of filter bed greatly reduces, thus the time of cleaning needed for filtering layer reduces relatively, and backwash water consumption also greatly reduces, and has saved and has used water.
The present invention utilizes pressure water inlet in technique that the water of process is delivered to equipment vertex, then self gravitation is utilized to reach art breading requirement through coagulation, reaction, precipitation, filtration, device upper-part centralized coagulation, react, be deposited in one, processing rate reaches more than 80%, and after the process of device lower depth, water quality improves greatly, this device water outlet SS≤5mg/L, oil≤5mg/L, effluent characteristics is better than technological standards SS≤10mg/L, the requirement of oil≤10mg/L, and the cycle extending running maintenance.
Accompanying drawing explanation
Fig. 1 is efficient degreasing separator for removing dirt sectional view of the present invention.
Fig. 2 is that oil-containing of the present invention is containing turbid wastewater processing technological flow figure.
In figure: 1, filler; 2, stuffing frame; 3, outer tube; 4, pipe core; 5, fixed support; 6, diffusion shell; 7, water inlet pipe; 8, oil-containing is containing turbid wastewater; 9, sludge hopper; 10, mud; 11, water distributor; 12, backwash water port; 13, anthracite coal measure; 14, quartz sand layer; 15, supporting layer; 16, water cap; 17, porous filter plate; 18, filter plate bracing frame; 19, gas distribution pipe; 20, compressed air inlet; 21, water outlet; 22, water outlet; 23, mud discharging mouth; 24, downcomer; 25, the second turnover; 26, expansion section; 27, the first turnover; 28, water storage cavity.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 1, efficient degreasing separator for removing dirt of the present invention is the tank structure integrated, and tank body top is water inlet mixing reactor and clarifying plant, and middle part is collection mud discharging device, and bottom is strainer and backwashing system.Water inlet mixing reactor forms double-skin duct by pipe core 4 and outer tube 3, and be communicated with water inlet pipe 7 bottom pipe core 4, pipe core 4 top is communicated with outer tube 3, is provided with the diffusion shell 6 of taper bottom outer tube 3; Water inlet mixing reactor is fixed on tank body central authorities by fixed support 5 and stuffing frame 2.Be provided with filler 1 in the cavity on stuffing frame 2 top, filler 1 central authorities are provided with top water storage cavity 28 and are communicated with the water distributor 11 of tank body lower part by vertical downcomer 24.Collection mud discharging device is be arranged on the taper sludge hopper 9 into below water mixing reactor, is communicated to the mud discharging mouth 23 of tank body side bottom sludge hopper 9 by shore pipe.Meanwhile, tank body is divided into up and down independently two portions by sludge hopper 9, and downcomer 24 is the unique passages being communicated with top and the bottom cavity.
Water distributor 11 doubles as backwash water shoot, and be communicated with the backwash water port 12 of tank skin, backwash water port 12 is normally closed in working order, only opens when backwash.The below that anthracite coal measure 13, quartz sand layer 14 and supporting layer 15 are arranged in water distributor 11 from top to bottom successively form filtering layer, and anthracite coal measure 13 thickness is 400mm, adopts particle diameter to be the hard coal of 2 ~ 4mm, nut-shell or haydite, to remain oil content in Adsorption water; Quartz sand layer 14 thickness is 300mm, adopts particle diameter to be the quartz sand of 1 ~ 2mm, to retain in filtered water the impurity such as suspended substance; Supporting layer 15 thickness is 200mm, adopts particle diameter to be the cobble of 2 ~ 8mm, to play support effect to quartz sand layer 14 and anthracite coal measure 13, prevents from running material.Filtering layer is stacked on porous filter plate 17, porous filter plate 17 plate face is furnished with several water caps 16, porous filter plate 17 is supported on tank body lower part by filter plate bracing frame 18, and porous filter plate 17 arranged beneath has the gas distribution pipe 19 be communicated with compressed air inlet 20, and tank base is provided with water outlet 22.
Oil-containing of the present invention containing turbid wastewater treatment process as shown in Figure 2, the oil-containing of iron and steel enterprise's continuous casting or hot rolling workshop is containing suspension content≤300mg/L, water inlet oleaginousness≤130mg/L in turbid wastewater 8, first waste water pump into line mixer by pump after whirling well, PAC and PAM is added respectively in line mixer, produce coagulating, then be promoted to efficient degreasing separator for removing dirt of the present invention, in the middle part of tank body, water inlet pipe 7 enters pipe core 4; Waste water first rises to top in pipe core 4, and then changed course realizes the first turnover 27, then declines along the annular region between outer tube 3 and pipe core 4; When through diffusion shell 6, space increases suddenly, and flow velocity sharply reduces, now, oil-containing containing the larger solid dirt of the large metric density in turbid wastewater 8 solid-liquid separation be able to sedimentation under the effect of expansion section 26 velocity contrast, and converges in sludge hopper 9 cone bottom shape and becomes mud 10.Waste water changed course after the second turnover 25 through diffusion shell 6 is risen, and is filtered by the filler 1 of tank deck, and filler 1 is porous stacked filler; Its effect increases the settling area of sewage, and make mud pile up its surface, after mud is accumulated to certain thickness, free skating drops down onto bucket; Oil removing principle of the present invention adds polymerize aluminum chloride medicament before sewage access arrangement, and after abundant reaction, oil-in-water part formed can the flco of sedimentation, then enters present device and removes.Through the filtration of filler 1, can remove suspended substances a large amount of in water inlet and flco, relatively clean water outlet converges to the top water storage cavity 28 of central authorities, and is dropped to the water distributor 11 of tank body lower part by downcomer 24.
Water distributor 11 is the T-shaped Wire wound tube of stainless steel, current are evenly distributed on filtering layer through water distributor 11, then slow through anthracite coal measure 13, quartz sand layer 14 and supporting layer 15 respectively from top to bottom, each filtering layer plays absorption oil content and cuts dirty effect and realizes filtering, in the present invention, anthracite coal measure 13 plays main filtration and cuts dirty effect, and quartz sand layer 14 only has top layer to participate in filtration, water outlet 21 is discharged by water outlet 22, suspension content≤20mg/L, oleaginousness≤8mg/L in final outflow water.Due to the operation with pressure of this device, device water outlet 21 can utilize the direct backwater of overbottom pressure to cooling tower to carry out cooling process, and after cooling tower process, water outlet 21 is from flowing to turbid circulating water pond for production plant reuse.
The present invention is after long term operation, and filtering layer can be polluted, and regularly need carry out backwash.When carrying out backwash, water inlet pipe 7 external valve is closed, backwash water port 12 external valve is opened, compressed air inlet 20 external valve is opened, in the outside outfall sewer be communicated with water outlet 22, water (having pressure) is inner through water outlet 22 access to plant, current are from bottom to top by porous filter plate 17, after water cap 16 uniform water distribution, backwash is carried out to filtering layer, during backwash, current loosen each filtering layer, filtering material particle is made to be in suspended state and collision mutually, and pass into compressed-air actuated effect by gas distribution pipe 19, form the process of cleaning.Because the settling velocity of each metafiltration material in water is different, after backwash terminates, the layering of each metafiltration material natural subsidence, returns to former filtration condition, can again put into operation.
More than describing is explanation of the invention, and be not the restriction to invention, when without prejudice to spirit of the present invention, the present invention can do any type of amendment.Such as the invention is not restricted to process oil-containing containing turbid wastewater, also may be used for processing conventional sewage.
Claims (6)
1. an efficient degreasing separator for removing dirt, is characterized in that: be the tank structure integrated, and tank body top is water inlet mixing reactor and clarifying plant, and middle part is collection mud discharging device, and bottom is strainer and backwashing system.
2. according to efficient degreasing separator for removing dirt according to claim 1, it is characterized in that: described water inlet mixing reactor forms double-skin duct by pipe core (4) and outer tube (3), pipe core (4) bottom is communicated with water inlet pipe (7), pipe core (4) top is communicated with outer tube (3), and outer tube (3) bottom is provided with the diffusion shell (6) of taper; Described clarifying plant is in filler (1) cavity on top, and filler (1) central authorities are provided with top water storage cavity (28) and are communicated with the water distributor (11) of tank body lower part by vertical downcomer (24); Described collection mud discharging device is be arranged on the taper sludge hopper (9) into below water mixing reactor, sludge hopper (9) bottom is communicated to the mud discharging mouth (23) of tank body side by shore pipe, tank body is divided into up and down independently two portions by described sludge hopper (9), and downcomer (24) is the unique passage being communicated with top and the bottom cavity.
3. according to efficient degreasing separator for removing dirt according to claim 1, it is characterized in that: in described strainer, water distributor (11) is communicated with downcomer (24), anthracite coal measure (13), the below that quartz sand layer (14) and supporting layer (15) are arranged in water distributor (11) from top to bottom successively forms filtering layer, filtering layer is stacked on porous filter plate (17), porous filter plate (17) plate face is furnished with several water caps (16), porous filter plate (17) is supported on tank body lower part by filter plate bracing frame (18), porous filter plate (17) arranged beneath has the gas distribution pipe (19) be communicated with compressed air inlet (20), tank base is provided with water outlet (22).
4. according to efficient degreasing separator for removing dirt according to claim 3, it is characterized in that: described anthracite coal measure (13) thickness is 350 ~ 450mm, adopt particle diameter to be the hard coal of 2 ~ 4mm; Quartz sand layer (14) thickness is 250 ~ 350mm, adopts particle diameter to be the quartz sand of 1 ~ 2mm; Supporting layer (15) thickness is 150 ~ 250mm, adopts particle diameter to be the cobble of 2 ~ 8mm.
5. according to efficient degreasing separator for removing dirt according to claim 3, it is characterized in that: described anthracite coal measure (13) can use hard coal, nut-shell or haydite.
6. one kind uses the oil-containing that described in claim 1, efficient degreasing separator for removing dirt carries out to contain turbid wastewater treatment process, it is characterized in that: first oil-containing pumps into line mixer by pump containing turbid wastewater after whirling well, PAC and PAM is added respectively in line mixer, produce coagulating, then described efficient degreasing separator for removing dirt is promoted to, in the middle part of tank body, water inlet pipe enters, through coagulating, clarification sedimentation, spoil disposal with filter after, discharged by the water outlet at the bottom of tank, described water outlet utilizes the direct backwater of overbottom pressure to cooling tower to carry out cooling process, then from flowing to the reuse of turbid circulating water pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000897.2A CN104556485A (en) | 2015-01-05 | 2015-01-05 | High-efficiency oil removal and turbidity removal device and oil-containing and turbidity-containing wastewater treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000897.2A CN104556485A (en) | 2015-01-05 | 2015-01-05 | High-efficiency oil removal and turbidity removal device and oil-containing and turbidity-containing wastewater treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104556485A true CN104556485A (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510000897.2A Pending CN104556485A (en) | 2015-01-05 | 2015-01-05 | High-efficiency oil removal and turbidity removal device and oil-containing and turbidity-containing wastewater treatment process |
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| Country | Link |
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| CN (1) | CN104556485A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422433A (en) * | 2016-09-23 | 2017-02-22 | 苏州市浒墅关化工添加剂有限公司 | Solvent-based dinonyl-naphthalenesulfonic acid barium layered continuous sedimentation tank |
| CN108483751A (en) * | 2018-06-15 | 2018-09-04 | 江苏德科环境科技有限公司 | Integrated deoiling separator for removing dirt |
| CN113880308A (en) * | 2021-11-05 | 2022-01-04 | 无锡市德林环保工程有限公司 | Integrated high-efficiency combined turbid-ring water purifier |
| CN115594275A (en) * | 2022-12-15 | 2023-01-13 | 四川省生态环境科学研究院（Cn） | Rural domestic sewage treatment device and use method |
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| CN102284211A (en) * | 2011-06-14 | 2011-12-21 | 江苏新龙鼎环保成套工程有限公司 | Multilayer structured pressure type water purification treatment equipment with drainage caps in filter region |
| CN204400738U (en) * | 2015-01-05 | 2015-06-17 | 宜兴市苏嘉环保设备有限公司 | Efficient degreasing separator for removing dirt |
-
2015
- 2015-01-05 CN CN201510000897.2A patent/CN104556485A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102284211A (en) * | 2011-06-14 | 2011-12-21 | 江苏新龙鼎环保成套工程有限公司 | Multilayer structured pressure type water purification treatment equipment with drainage caps in filter region |
| CN204400738U (en) * | 2015-01-05 | 2015-06-17 | 宜兴市苏嘉环保设备有限公司 | Efficient degreasing separator for removing dirt |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422433A (en) * | 2016-09-23 | 2017-02-22 | 苏州市浒墅关化工添加剂有限公司 | Solvent-based dinonyl-naphthalenesulfonic acid barium layered continuous sedimentation tank |
| CN108483751A (en) * | 2018-06-15 | 2018-09-04 | 江苏德科环境科技有限公司 | Integrated deoiling separator for removing dirt |
| CN113880308A (en) * | 2021-11-05 | 2022-01-04 | 无锡市德林环保工程有限公司 | Integrated high-efficiency combined turbid-ring water purifier |
| CN113880308B (en) * | 2021-11-05 | 2023-02-03 | 无锡市德林环保集团有限公司 | Integrated high-efficiency combined turbid-ring water purifier |
| CN115594275A (en) * | 2022-12-15 | 2023-01-13 | 四川省生态环境科学研究院（Cn） | Rural domestic sewage treatment device and use method |
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Application publication date: 20150429 |
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