CN102874965B - System for recycling waste water containing oil and washing water - Google Patents
System for recycling waste water containing oil and washing water Download PDFInfo
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- CN102874965B CN102874965B CN201210392919.0A CN201210392919A CN102874965B CN 102874965 B CN102874965 B CN 102874965B CN 201210392919 A CN201210392919 A CN 201210392919A CN 102874965 B CN102874965 B CN 102874965B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 239000002351 wastewater Substances 0.000 title claims abstract description 36
- 238000005406 washing Methods 0.000 title claims abstract description 20
- 238000004064 recycling Methods 0.000 title abstract 2
- 239000008394 flocculating agent Substances 0.000 claims abstract description 15
- 238000000108 ultra-filtration Methods 0.000 claims description 40
- 239000007788 liquid Substances 0.000 claims description 27
- 239000002699 waste material Substances 0.000 claims description 17
- 239000000126 substance Substances 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 13
- 230000035695 Efflux Effects 0.000 claims description 10
- 238000005276 aerator Methods 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 8
- 230000001954 sterilising Effects 0.000 claims description 8
- 238000004659 sterilization and disinfection Methods 0.000 claims description 8
- 238000011001 backwashing Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 238000000746 purification Methods 0.000 abstract description 3
- 238000007667 floating Methods 0.000 description 8
- 238000005189 flocculation Methods 0.000 description 8
- 230000016615 flocculation Effects 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000011362 coarse particle Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000037250 Clearance Effects 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- 230000035512 clearance Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000414 obstructive Effects 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000005429 turbidity Methods 0.000 description 2
- 230000001488 breeding Effects 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002906 microbiologic Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Abstract
The invention provides a system for recycling waste water containing oil and washing water. The system comprises a waste water collection pool, a lift pump, a flocculating agent feeding device, an air lift flow reduction type reactor and an inner circulation system, wherein the waste water collection pool, the lift pump, the air lift flow reduction type reactor and the inner circulation system are sequentially connected with one another through pipelines; the flocculating agent feeding device feeds a flocculating agent into the pipeline between the lift pump and the air lift flow reduction type reactor; waste water containing the oil and the washing water sequentially flows through the waste water collection pool, the lift pump, the air lift flow reduction type reactor and the inner circulation system and then is purified; and the purification efficiency is high, and the process is simple.
Description
Technical field
The present invention relates to water treatment system, refer to that especially a kind of oil-containing is containing reclaiming system for waste washing water in storeyed.
Background technology
China is the country of a shortage of water resources, a lot of local all appearance water is in various degree flurried, therefore, the comprehensive utilization of the waste water such as life, production becomes more important, and it is current newer water technology in the world that By Bubble-floating Method purifies factory effluent and sanitary sewage, and its principle is in waste water, to introduce a large amount of micro-bubbles, bubble adheres in fine suspension by surface tension effects, form the situation that overall proportion is less than 1,, separate thereby realize solid-liquid or liquid liquid floating to the water surface according to law of buoyancy.
Traditional oil-containing often adopts the technique of oil removal-air supporting-biochemical treatment containing washes treatment process, but traditional dissolved air type air-float equipment is due to the defect on project organization, processing power is lower, sewage residence time in air supporting needs 40-60 minute, equipment volume is comparatively huge, and purification efficiency is low.
Summary of the invention
The present invention proposes a kind of oil-containing containing reclaiming system for waste washing water in storeyed, the combination process that adopts pre-treatment flocculation sediment, air lift to fall flow reactor, ultrafiltration is processed reclaiming system to traditional oil-containing containing washes and is carried out upgrading, it is long to have solved in prior art the treatment time, the problem of the low grade of purification efficiency.
Technical scheme of the present invention is achieved in that a kind of oil-containing, containing reclaiming system for waste washing water in storeyed, comprising:
Wastewater collection pond, lift pump, flocculating agent feeding device, flow reactor and internal circulation system fall in air lift, described wastewater collection pond, described lift pump, described air lift is fallen flow reactor and is connected successively by pipeline with described internal circulation system, described flocculating agent feeding device is located at described lift pump and described air lift is fallen between flow reactor, and connect by pipeline, described flocculating agent feeding device carries out the action that adds of flocculation agent, oil-containing passes through described wastewater collection pond successively containing washes, described lift pump, flow reactor and described internal circulation system fall in described air lift, described wastewater collection pond can be stored, collect the water quality and quantity with balanced waste water, described lift pump provides the current of flow and constant pressure for follow-up system, described flocculating agent feeding device adds flocculation agent in waste water, described internal circulation system can improve the efficiency of purifying waste water, and reduce production costs.
Further, up-flow district, the header at middle part and the defoaming device on top that flow reactor comprises outside Jiang Liu district, inside falls in described air lift, described header is connected with outlet conduit, waste water and bubble enter from the bottom in described up-flow district, the bubble floating that is attached with suspended substance in described up-flow district drains into described defoaming device by device interior pressure by the foam of the water surface to top, the water that density is larger and a part of coarse particles impurity flow toward described Jiang Liu district direction, and clear water is discharged by the described header in middle part.
Further, described air lift is fallen flow reactor bottom and is provided with sludge-discharge pipe, described defoaming device is mechanical defoaming device, described air lift is fallen coarseparticulate in flow reactor and is discharged through shore pipe after being deposited on bottom, prevents that flow reactor from falling in described air lift blocked, adopts described mechanical defoaming device, defoaming effectiveness is good, cost is low, has more actual needs, also can adopt the devices such as ultrasonic wave froth breaking.
Further, described internal circulation system comprises gas-liquid separator, efflux aerator and the ultrafiltration system that hyperfiltration membrane assembly is installed, described efflux aerator is located at described air lift and is fallen between flow reactor and described ultrafiltration system, and be communicated with water pipe by diffuser tube, pressurized air is after described efflux aerator compression, discharge through described diffuser tube again, ingoing stream pipeline, in water body, rise and enter in hyperfiltration membrane assembly with current with trickle bubble, bubble causes that in film flow turbulence also can effectively prevent the obstruction on ultra-filtration membrane surface, described gas-liquid separator includes waterpipe, upper end pneumatic outlet pipeline, lower end liquid exit pipeline, after described water inlet pipe is connected to described ultrafiltration system, described pneumatic outlet pipeline is communicated with described up-flow district bottom pipe, described liquid exit pipeline is connected to the outlet conduit after described header, water body through described ultrafiltration system is rich in micro-bubble, be back to described gas-liquid separator, after separating, gas backstreaming to described air lift is fallen flow reactor as air supply source, the outlet conduit that liquid is back to after described header forms internal circulation system, improve efficiency, reduce cost.
Further; the screen filter that is connected with impurity in the flow of assure feed water and the topping-up pump of constant pressure and interception water between flow reactor and described ultrafiltration system in turn falls in described air lift; the model specification of described topping-up pump and quantity are foundation according to influent quality and the water yield; described screen filter can be removed Suspended Matter in Water; particulate matter; reduce raw water turbidity; generation and the securing system miscellaneous equipment of minimizing system dirt, bacterium algae, corrosion are normally worked, and described screen filter mainly arranges in order to ensure ultrafiltration influent quality.
Further, there are clean water basin described ultrafiltration system rear end also setting tool, for collecting, store the water outlet after ultrafiltration system.
Further, described clean water basin are connected with for ultrafiltration system backwash and the backwashing pump of power are provided and ensure the accurate filter of quality of reused water by pipeline, the setting of described accurate filter prevents that the impurity that product water mixes in storage process from entering in ultrafiltration system in the time of backwash, the situation that causes the film of hyperfiltration membrane assembly to pollute or stop up.
Further, described oil-containing also comprises sterilization chemicals dosing plant containing reclaiming system for waste washing water in storeyed, described sterilization chemicals dosing plant is located between described ultrafiltration system and described clean water basin, and connects by pipeline, and described sterilization chemicals dosing plant is for further improving the water quality of reuse water.
Further, described wastewater collection pond ingress is provided with the fine fack of removing solid sundries in fluid, and described fine fack can be removed suspended substance thicker in waste water or floating debris, and guarantee subsequent processing device is normally moved.
Beneficial effect of the present invention is: oil-containing passes through described fine fack successively containing washes, described wastewater collection pond, described lift pump, flow reactor falls in described air lift, described topping-up pump, described screen filter, described ultrafiltration system, described clean water basin, described backwashing pump and described accurate filter, described flocculating agent feeding device falls and between flow reactor, adds flocculation agent in described lift pump and described air lift, described gas-liquid separator is in the laggard row gas-liquid separation of described hyperfiltration membrane assembly, gas enters described air lift and falls in flow reactor, liquid is back to the outlet conduit after described header, the pipeline of described sterilant throwing device between described clean water basin and described hyperfiltration membrane assembly carries out adding of sterilant, the pre-treatment flocculation sediment that the present invention adopts, flow reactor falls in air lift, the combination process of ultrafiltration, more outstanding on processing efficiency, air supporting principle that flow reactor makes full use of and the combination of technical construction fall in described air lift wherein, can be good at realizing solid-liquid separation effect, oil-containing contains washes after as above processing, the clearances such as suspended substance are high, the rate of recovery of water is high, the described internal circulation system adopting in the present invention has very large effect for the lifting of overall system performance, the dense water that organic concentration is higher refluxes again after ultrafiltration system, form described internal circulation system, increase the biodegradability of system, being transported to ducted pressurized air through described efflux aerator both falls flow reactor for described air lift source of the gas is provided, also increased the concentration of the dissolved oxygen in water simultaneously, aerobic microbiological in water is just grown in the film surface attachment of described hyperfiltration membrane assembly, using the organism in water as the required carbon source of self growth and breeding, now by described gas-liquid separator, the internal circulation system of described efflux aerator and described ultrafiltration system composition just has the function of materialization and biochemistry (can simultaneously reach the effect of film-bioreactor art breading waste water) concurrently simultaneously, can not only wipe oil, also can reduce the CODcr in water, BOD5, make the treatment process of system more perfect, treatment effect improves.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of oil-containing of the present invention containing an embodiment of reclaiming system for waste washing water in storeyed;
Fig. 2 is the process flow sheet of a kind of oil-containing of the present invention containing reclaiming system for waste washing water in storeyed.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As depicted in figs. 1 and 2, a kind of oil-containing, containing reclaiming system for waste washing water in storeyed, comprising:
Wastewater collection pond 2, lift pump 3, flocculating agent feeding device 4, flow reactor 5 and internal circulation system fall in air lift, wastewater collection pond 2, lift pump 3, air lift is fallen flow reactor 5 and is connected successively by pipeline with internal circulation system, flocculating agent feeding device 4 is located at lift pump 3 and air lift is fallen between flow reactor 5, and connect by pipeline, flocculating agent feeding device 4 carries out the action that adds of flocculation agent, oil-containing passes through wastewater collection pond 2 successively containing washes, lift pump 3, flow reactor 5 and internal circulation system fall in air lift, wastewater collection pond 2 can be stored, collect the water quality and quantity with balanced waste water, lift pump 3 provides the current of flow and constant pressure for follow-up system, flocculating agent feeding device 4 adds flocculation agent in waste water, internal circulation system can improve the efficiency of purifying waste water, and reduce production costs.
Further, up-flow district 52, the header 53 at middle part and the defoaming device 51 on top that flow reactor 5 comprises outside Jiang Liu district, inside falls in air lift, header 53 is connected with outlet conduit, waste water and bubble enter from the bottom in up-flow district 52, the bubble floating that is attached with suspended substance in up-flow district 52 drains into defoaming device 51 by device interior pressure by the foam of the water surface to top, the water that density is larger and a part of coarse particles impurity Ze Wangjiangliu district direction flow, and clear water is discharged by middle part header 53.
Further, air lift is fallen flow reactor 5 bottoms and is provided with sludge-discharge pipe, defoaming device 51 is mechanical defoaming device 51, air lift is fallen after the interior coarseparticulate of flow reactor 5 is deposited on bottom and is discharged through shore pipe, prevents that flow reactor 5 from falling in air lift blocked, adopts mechanical defoaming device 51, defoaming effectiveness is good, cost is low, has more actual needs, also can adopt the devices such as ultrasonic wave froth breaking.
Further, internal circulation system comprises gas-liquid separator 6, efflux aerator 9 and the ultrafiltration system that hyperfiltration membrane assembly 10 is installed, efflux aerator 9 is located at air lift and is fallen between flow reactor 5 and ultrafiltration system, and be communicated with water pipe by diffuser tube, pressurized air is after efflux aerator 9 compressions, discharge through diffuser tube again, ingoing stream pipeline, in water body, rise and enter in hyperfiltration membrane assembly 10 with current with trickle bubble, bubble causes that in film flow turbulence also can effectively prevent the obstruction on ultra-filtration membrane surface, gas-liquid separator 6 includes waterpipe, upper end pneumatic outlet pipeline, lower end liquid exit pipeline, after water inlet pipe is connected to ultrafiltration system, pneumatic outlet pipeline is communicated with up-flow district 52 bottom pipe, liquid exit pipeline is connected to the outlet conduit after header 53, water body through ultrafiltration system is rich in micro-bubble, be back to gas-liquid separator 6, after separating, gas backstreaming to air lift is fallen flow reactor 5 as air supply source, the outlet conduit that liquid is back to after header 53 forms internal circulation system, improve efficiency, reduce cost.
Further; the screen filter 8 that is connected with impurity in the flow of assure feed water and the topping-up pump of constant pressure 7 and interception water between flow reactor 5 and ultrafiltration system in turn falls in air lift; the model specification of topping-up pump 7 and quantity are foundation according to influent quality and the water yield; screen filter 8 can be removed Suspended Matter in Water; particulate matter; reduce raw water turbidity; generation and the securing system miscellaneous equipment of minimizing system dirt, bacterium algae, corrosion are normally worked, and screen filter 8 mainly arranges in order to ensure ultrafiltration influent quality.
Further, there are clean water basin 12 ultrafiltration system rear end also setting tool, for collecting, store the water outlet after ultrafiltration system.
Further, clean water basin 12 are connected with for ultrafiltration system backwash and the backwashing pump 13 of power are provided and ensure the accurate filter 14 of quality of reused water by pipeline, the setting of accurate filter 14 prevents that the impurity that product water mixes in storage process from entering in ultrafiltration system in the time of backwash, the situation that causes the film of hyperfiltration membrane assembly 10 to pollute or stop up.
Further, oil-containing also comprises sterilization chemicals dosing plant 11 containing reclaiming system for waste washing water in storeyed, and sterilization chemicals dosing plant 11 is located between ultrafiltration system and clean water basin 12, and connects by pipeline, and sterilization chemicals dosing plant 11 is for further improving the water quality of reuse water.
Further, wastewater collection pond 2 ingresss are provided with the fine fack 1 of removing solid sundries in fluid, and fine fack 1 can be removed suspended substance thicker in waste water or floating debris, and guarantee subsequent processing device is normally moved.
Now, we do a description with regard to specific operation process of the present invention: oil-containing is removed suspended substance thicker in waste water or floating debris by fine fack 1 successively containing washes, waste water flowing collecting tank 2 is stored again, collect the water quality and quantity with balanced waste water, then after promoting, lift pump 3 becomes the current of flow and constant pressure, flocculating agent feeding device 4 falls between flow reactor 5 and adds flocculation agent in lift pump 3 and air lift, the current air lift of flowing through is fallen flow reactor 5 and is processed, the bubble floating that is attached with suspended substance is drained into defoaming device 51 by device interior pressure by the foam of the water surface to top, the water that density is larger and a part of coarse particles impurity Ze Wangjiangliu district direction flow, clear water is discharged by middle part header 53, through topping-up pump 7, current are carried out to supercharging again, by screen filter 8, current are carried out to coarse filtration, then by ultrafiltration system, current are carried out to ultrafiltration, remove most molecules, then entering clean water basin 12 collects, backwashing pump 13 provides power in the backwash of ultrafiltration system, the water quality of accurate filter 14 when ensureing ultrafiltration system backwash, gas-liquid separator 6 is in the laggard row gas-liquid separation of hyperfiltration membrane assembly 10, gas enters air lift and falls in flow reactor 5, liquid enters the outlet conduit after header 53, the pipeline of sterilant throwing device 11 between clean water basin 12 and hyperfiltration membrane assembly 10 carries out adding of sterilant, oil-containing contains washes after these are processed, removal efficiency is up to 99.8%, the clearance of CODcr can reach 80%, the water rate of recovery reaches 80%, processing efficiency is high, technique is simple.
These are only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. oil-containing, containing a reclaiming system for waste washing water in storeyed, is characterized in that, comprising:
Flow reactor and internal circulation system fall in wastewater collection pond, lift pump, flocculating agent feeding device, air lift, described wastewater collection pond ingress is provided with the fine fack of removing solid sundries in fluid, and described wastewater collection pond, described lift pump, described air lift are fallen flow reactor and be connected successively by pipeline with described internal circulation system, described flocculating agent feeding device is located at described lift pump and described air lift is fallen between flow reactor, and connect by pipeline, described internal circulation system comprises gas-liquid separator, efflux aerator and the ultrafiltration system that hyperfiltration membrane assembly is installed, described efflux aerator is located at described air lift and is fallen between flow reactor and described ultrafiltration system, and be communicated with water pipe by diffuser tube, described gas-liquid separator includes waterpipe, upper end pneumatic outlet pipeline, lower end liquid exit pipeline, after described water inlet pipe is connected to described ultrafiltration system, described pneumatic outlet pipeline is communicated with described up-flow district bottom pipe, described liquid exit pipeline is connected to the outlet conduit after described header.
2. oil-containing, containing reclaiming system for waste washing water in storeyed, is characterized in that as described in claim 1: the up-flow district that flow reactor comprises outside Jiang Liu district, inside falls in described air lift; The header at middle part and the defoaming device on top, described header is connected with outlet conduit.
3. oil-containing, containing reclaiming system for waste washing water in storeyed, is characterized in that: described air lift is fallen flow reactor bottom and is provided with sludge-discharge pipe as described in claim 2, and described defoaming device is mechanical defoaming device.
4. oil-containing, containing reclaiming system for waste washing water in storeyed, is characterized in that as described in claim 1: the screen filter that is connected with impurity in the flow of assure feed water and the topping-up pump of constant pressure and interception water between flow reactor and described ultrafiltration system in turn falls in described air lift.
5. oil-containing, containing reclaiming system for waste washing water in storeyed, is characterized in that: described ultrafiltration system rear end is also provided with clean water basin as described in claim 4.
6. oil-containing, containing reclaiming system for waste washing water in storeyed, is characterized in that as described in claim 5: described clean water basin are connected with for ultrafiltration system backwash and the backwashing pump of power are provided and ensure the accurate filter of quality of reused water by pipeline.
7. oil-containing contains reclaiming system for waste washing water in storeyed as described in claim 6, it is characterized in that: described oil-containing also comprises sterilization chemicals dosing plant containing reclaiming system for waste washing water in storeyed, described sterilization chemicals dosing plant is located between described ultrafiltration system and described clean water basin, and connects by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210392919.0A CN102874965B (en) | 2012-10-16 | 2012-10-16 | System for recycling waste water containing oil and washing water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210392919.0A CN102874965B (en) | 2012-10-16 | 2012-10-16 | System for recycling waste water containing oil and washing water |
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| Publication Number | Publication Date |
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| CN102874965A CN102874965A (en) | 2013-01-16 |
| CN102874965B true CN102874965B (en) | 2014-11-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104591496A (en) * | 2015-01-13 | 2015-05-06 | 上海安赐机械设备有限公司 | Decrement consumption-reduction device used for oil refinery acidic wastewater stripping process |
| CN109465278B (en) * | 2018-11-21 | 2020-06-19 | 浙江华再环境技术有限公司 | Intelligent kitchen garbage treatment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2475727Y (en) * | 2001-03-28 | 2002-02-06 | 徐惠昌 | Airfloat sewage treatment device |
| CN100475723C (en) * | 2005-04-25 | 2009-04-08 | 蓝星环境工程有限公司 | Oily sewage treatment process and treater thereof |
| CN201999822U (en) * | 2011-01-28 | 2011-10-05 | 吴紫城 | Car and clothes washing waste water recycling processing device |
| CN202898140U (en) * | 2012-10-16 | 2013-04-24 | 广州市鹏凯水处理设备有限公司 | System for recycling oil-containing washing waste water |
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Address after: 511400, 904, Guangzhou science and technology innovation building, Panyu energy saving Science Park, No. 555, Panyu Avenue, Panyu District, Guangdong, China Patentee after: Guangzhou Peng Kai environmental Polytron Technologies Inc Address before: Tsun Yip Shawan Town East Industrial Zone of Panyu District ancient street in Guangzhou City, Guangdong province 511487 No. 28 two Patentee before: Guangzhou Pengkai Water Treatment Equipment Co., Ltd. |
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Denomination of invention: System for recycling waste water containing oil and washing water Effective date of registration: 20200610 Granted publication date: 20141119 Pledgee: Guangzhou Branch of Guangzhou Bank Co.,Ltd. Pledgor: GUANGZHOU PENGKAI ENVIRONMENT TECHNOLOGY Co.,Ltd. Registration number: Y2020980002964 |
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Date of cancellation: 20211112 Granted publication date: 20141119 Pledgee: Guangzhou Branch of Guangzhou Bank Co.,Ltd. Pledgor: GUANGZHOU PENGKAI ENVIRONMENT TECHNOLOGY CO.,LTD. Registration number: Y2020980002964 |
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Address after: 511493 Room 401, building 11, Tian'an headquarters center, No. 555, Panyu Avenue North, Donghuan street, Panyu District, Guangzhou City, Guangdong Province Patentee after: Pengkai Environmental Technology Co.,Ltd. Address before: 904, Tian'an science and technology innovation building, Panyu energy saving technology park, No. 555, Panyu Avenue North, Panyu District, Guangzhou, Guangdong 511400 Patentee before: GUANGZHOU PENGKAI ENVIRONMENT TECHNOLOGY CO.,LTD. |