CN203683308U - Advanced treatment system of petrochemical wastewater - Google Patents
Advanced treatment system of petrochemical wastewater Download PDFInfo
- Publication number
- CN203683308U CN203683308U CN201320663158.8U CN201320663158U CN203683308U CN 203683308 U CN203683308 U CN 203683308U CN 201320663158 U CN201320663158 U CN 201320663158U CN 203683308 U CN203683308 U CN 203683308U
- Authority
- CN
- China
- Prior art keywords
- tank
- pool
- pond
- advanced treatment
- treatment system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 238000005345 coagulation Methods 0.000 claims abstract description 17
- 230000015271 coagulation Effects 0.000 claims abstract description 17
- 238000005188 flotation Methods 0.000 claims abstract description 15
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000020477 pH reduction Effects 0.000 claims abstract description 7
- 239000010802 sludge Substances 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 20
- 238000001556 precipitation Methods 0.000 claims description 18
- 238000000108 ultra-filtration Methods 0.000 claims description 14
- 238000007667 floating Methods 0.000 claims description 9
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000001223 reverse osmosis Methods 0.000 claims description 6
- 239000010801 sewage sludge Substances 0.000 claims description 6
- 230000007062 hydrolysis Effects 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- 230000003301 hydrolyzing effect Effects 0.000 abstract description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 3
- 238000005273 aeration Methods 0.000 abstract 1
- 230000033228 biological regulation Effects 0.000 abstract 1
- 238000005352 clarification Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000032258 transport Effects 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 239000000706 filtrate Substances 0.000 description 4
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 238000005842 biochemical reaction Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000006396 nitration reaction Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004148 unit process Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical class N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Images
Landscapes
- Physical Water Treatments (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model discloses an advanced recycling treatment system of petrochemical wastewater. The advanced recycling treatment system comprises a water collecting tank, a homogenizing regulation tank, an oil removal settling tank, a gas flotation tank, a 1# intermediate water tank, a hydrolytic acidification tank, a denitrification tank, a deep aeration tank, a coagulation gas flotation tank, a 2# intermediate water tank, an ozone oxidization tank, a blow-off tank, a BAF (biological aerated filter) biochemical tank, a mechanical accelerated clarification tank, a clear water tank and an advanced treatment tank which are connected by a channel or a pipeline in sequence. The advanced recycling treatment system of the petrochemical wastewater disclosed by the utility model is simple to operate, high in treatment efficiency, relatively low in investment cost, and low in risk of an experimental test and engineering wastewater treatment.
Description
Technical field
The utility model relates to technical field of waste water processing, relates in particular to a kind of advanced treatment system of petrochemical wastewater.
Background technology
Petrochemical wastewater derives from petrochemical process, composition is very complicated, wherein except containing the tens of kinds of inorganicss such as ammonia salt, thiocyanide, sulfide, prussiate, also contain phenols, monocycle and change aromatics more, COD content is high, and some organic pollutants is difficult to degraded, is a kind of typical severe contamination water source ecotope and unmanageable trade effluent.
Petrochemical wastewater is that first kinds of pollution matter kind is many, the high concentrated organic wastewater of complicated component, depends merely on traditional physics and chemistry method processing, is often difficult to reach emission standard.So be badly in need of wanting a kind of advanced treatment system that can effectively process petrochemical wastewater in field of waste water treatment.At present, for the advanced treatment of this waste water, conventionally can be divided into coagulation, second-stage treatment and advanced treatment.Coagulation is pre-treatment, mainly comprises the methods such as coagulation, chemical precipitation, air supporting, to remove part oil pollutant; Second-stage treatment is mainly biochemical treatment, mainly comprises microbial hydrolytic, biochemical denitrification processing etc., to reduce organic content; Deep treatment method mainly contains active carbon adsorption, Ozonation, Wet Catalytic Oxidation Method etc.But all complicated operations too of the at present advanced treatment system of conventional petrochemical wastewater design, the shortcoming such as the low and cost of investment of processing efficiency is high.
Summary of the invention
The utility model aims to provide a kind of simple to operate, and processing efficiency is high, the advanced treatment system of the relatively low petrochemical wastewater of cost of investment.
The purpose of this utility model is achieved by following technical proposals:
The advanced treatment system of a kind of petrochemical wastewater described in the utility model, comprises by consisting of channel or connected water collecting basin, homogeneous regulating tank, oil partiting precipitation pool, air flotation pool, 1# intermediate pool, hydrolysis acidification pool, denitrification pond, deep aerating pond, coagulation floatation, 2# intermediate pool, ozone oxidation pond, stripping pond, BAF biochemistry pool, mechanical accelerating purifying pool, clean water basin and the advanced treatment unit of pipeline successively.
Wherein preferably, described advanced treatment unit is made up of the more medium filter being connected by pipeline, ultra-filtration equipment, ultrafiltration product pond and reverse osmosis unit, reuse water tank.
Further preferably, described homogeneous regulating tank, oil partiting precipitation pool are connected with floating oil collecting pond by pipeline respectively, and floating oil collecting pond is connected with oil slick tank by oil slick transferpump.
More preferably, described homogeneous regulating tank, oil partiting precipitation pool, air flotation pool are connected with greasy filth pond by pipeline respectively, and greasy filth pond is connected with greasy filth concentration tank by greasy filth transferpump, and greasy filth concentration tank is connected with centrifuge by greasy filth fresh feed pump.
More preferably, described coagulation floatation, mechanical accelerating purifying pool are connected with sludge sump by pipeline respectively, and sludge sump is connected with sludge concentrating pot by sludge delivery pump, and sludge concentrating pot is connected with belt type dewaterer by sewage sludge feed pump.
The technical process of the advanced treatment system of petrochemical wastewater described in the utility model is as follows:
Waste water enters water collecting basin after grid is removed suspended substance, regulates after wastewater pH in water collecting basin, enters homogeneous regulating tank, regulates the waste water water yield, and remove most oil pollutant in homogeneous regulating tank.The water outlet of homogeneous regulating tank enters oil partiting precipitation pool, and oil partiting precipitation pool water outlet enters air flotation pool, and oil pollutant is further removed in air supporting, for follow-up biochemical reaction provides good condition.Air flotation pool water outlet enters 1# intermediate pool.
Waste water is controlled water temperature at 25 DEG C in 1# intermediate pool, and the water outlet of 1# intermediate pool enters acidication reaction tank, and the acidification reaction that is hydrolyzed, to improve the biodegradability of waste water the partial organic substances of degrading.The water outlet of acidication reaction tank enters denitrification pond, carries out denitrification, nitration reaction is carried out denitrogenation in denitrification pond, and degradation of organic substances simultaneously.The water outlet of denitrification pond enters deep aerating pond, and the water outlet of deep aerating pond enters coagulation floatation, carries out solid-liquid separation.Coagulation floatation water outlet enters 2# intermediate pool.
The water outlet of 2# intermediate pool enters after ozone oxidation pond, stripping pond and BAF biochemistry pool successively, further removes the organic pollutant in waste water, and after mechanical accelerating purifying pool, water outlet enters clean water basin, if water outlet is qualified, and penetration depth processing unit; If water outlet is defective, is back to after #1 intermediate pool or intermediate pool 2 and again processes.
Pre-treatment from clean water basin clear water out through more medium filter, enters ultra-filtration equipment, and ultrafiltration water outlet enters ultrafiltration and produces behind pond, pumps into reverse osmosis system by high-pressure pump, and water outlet enters reuse water tank.
The top oil slick of homogeneous regulating tank, oil partiting precipitation pool pumps into oil slick tank by oil slick transferpump after entering floating oil collecting pond, transports outward processing.
The bottom greasy filth of homogeneous regulating tank, oil partiting precipitation pool, air flotation pool enters greasy filth pond, pumps into greasy filth concentration tank through greasy filth transferpump, then pumps into centrifuge by greasy filth fresh feed pump and dewater, and filtrate is to water collecting basin, mud cake outward transport, and sump oil enters slop oil tank.
Coagulation floatation, mechanical accelerating purifying pool mud pump into sludge concentrating pot by sludge delivery pump after entering sludge sump, then pump into belt type dewaterer dehydration by sewage sludge feed pump, and filtrate is back to water collecting basin, mud cake outward transport.
The advanced treatment system of petrochemical wastewater described in the utility model, has simple to operately, and processing efficiency is high, and cost of investment is relatively low, and processes the advanced treatment system of the petrochemical wastewater that risk is low from experiment lab scale and construction waste water.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model preferred embodiment one.
1, waste water; 2, water collecting basin; 3, homogeneous regulating tank; 4, oil partiting precipitation pool; 5, air flotation pool; 6,1# intermediate pool; 7, hydrolysis acidification pool; 8, denitrification pond; 9, deep aerating pond; 10, coagulation floatation; 11,2# intermediate pool; 12, ozone oxidation pond; 13, stripping pond; 14, BAF biochemistry pool; 15, mechanical accelerating purifying pool; 16, clean water basin; 20, top oil slick; 21, floating oil collecting pond; 22, oil slick pump; 23, oil slick tank; 30, bottom greasy filth; 31, greasy filth pond; 32, greasy filth transferpump; 33, greasy filth concentration tank; 34, greasy filth fresh feed pump; 35, centrifuge; 36, greasy filth tank; 40, mud; 41, sludge sump; 42, sludge delivery pump; 43, sludge concentrating pot; 44, sewage sludge feed pump; 45, belt type dewaterer; 50, clear water; 51, more medium filter; 52, ultra-filtration equipment; 53, is produced from pond in ultrafiltration; 54, high-pressure pump; 55, reverse osmosis unit; 56, reuse water tank.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in the figure, the advanced treatment system of a kind of petrochemical wastewater of the present utility model, main by forming by channel or connected water collecting basin 2, homogeneous regulating tank 3, oil partiting precipitation pool 4, air flotation pool 5,1# intermediate pool 6, hydrolysis acidification pool 7, denitrification pond 8, deep aerating pond 9, coagulation floatation 10,2# intermediate pool 11, ozone oxidation pond 12, stripping pond 13, BAF biochemistry pool 14, mechanical accelerating purifying pool 15, clean water basin 16 and the advanced treatment unit of pipeline successively.
Wherein, advanced treatment unit is made up of the more medium filter 51 being connected by pipeline, ultra-filtration equipment 52, ultrafiltration product pond 53 and reverse osmosis unit 55, reuse water tank 56.Homogeneous regulating tank 3, oil partiting precipitation pool 4 are connected with floating oil collecting pond 21 by pipeline respectively, and floating oil collecting pond 21 is connected with oil slick tank 23 by oil slick transferpump 22; Homogeneous regulating tank 3, oil partiting precipitation pool 4, air flotation pool 5 are connected with greasy filth pond 31 by pipeline respectively, and greasy filth pond 31 is connected with greasy filth concentration tank 33 by greasy filth transferpump 32, and greasy filth concentration tank 33 is connected with centrifuge 35 by greasy filth fresh feed pump 34; Coagulation floatation 10, mechanical accelerating purifying pool 15 are connected with sludge sump 41 by pipeline respectively, and sludge sump 41 is connected with sludge concentrating pot 43 by sludge delivery pump 42, and sludge concentrating pot 43 is connected with belt type dewaterer 45 by sewage sludge feed pump 44.
Its technical process is as follows:
Waste water 1 enters water collecting basin 2 after grid is removed suspended substance, and after the interior adjusting wastewater pH of water collecting basin 2, waste water enters homogeneous regulating tank 3, regulates the waste water water yield in homogeneous regulating tank 3, and removes most oil pollutant.3 water outlets of homogeneous regulating tank enter oil partiting precipitation pool 4, and oil partiting precipitation pool 4 water outlets enter air flotation pool 5, and oil pollutant is further removed in air supporting, for follow-up biochemical reaction provides good condition.Air flotation pool 5 water outlets enter 1# intermediate pool 6.
Waste water is controlled water temperature at 25 DEG C in 1# intermediate pool 6, and 6 water outlets of 1# intermediate pool enter acidication reaction tank 7, and the acidification reaction that is hydrolyzed, to improve the biodegradability of waste water the partial organic substances of degrading.7 water outlets of acidication reaction tank enter denitrification pond 8, carry out denitrification, nitration reaction is carried out denitrogenation in denitrification pond 8, and degradation of organic substances simultaneously.8 water outlets of denitrification pond enter deep aerating pond 9, and 9 water outlets of deep aerating pond enter coagulation floatation 10, carry out solid-liquid separation.Coagulation floatation 10 water outlets enter 2# intermediate pool 11.
11 water outlets of 2# intermediate pool enter after ozone oxidation pond 12, stripping pond 13 and BAF biochemistry pool 14 successively, further remove the organic pollutant in waste water, after mechanical accelerating purifying pool 15, water outlet enters clean water basin 16, if water outlet is qualified, penetration depth processing unit; If water outlet is defective, is back to after 1# intermediate pool 6 or 2# intermediate pool 11 and again processes.
Pre-treatment from clean water basin 16 clear water 50 out through more medium filter 51, enters ultra-filtration equipment 52, and ultrafiltration water outlet enters ultrafiltration and produces behind pond 53, pumps into reverse osmosis unit 55 by high-pressure pump 54, and water outlet enters 56 reuses of reuse water tank.
The top oil slick 20 of homogeneous regulating tank 3, oil partiting precipitation pool 4 pumps into oil slick tank 23 by oil slick transferpump 22 after entering floating oil collecting pond 21, transports outward processing.
The bottom greasy filth 30 of homogeneous regulating tank 3, oil partiting precipitation pool 4, air flotation pool 5 enters greasy filth pond 31, pump into greasy filth concentration tank 33 through greasy filth transferpump 32, then pump into centrifuge 35 by greasy filth fresh feed pump 34 and dewater, filtrate is to water collecting basin 2, mud cake outward transport, sump oil enters slop oil tank 36.
The mud 40 of coagulation floatation 10, mechanical accelerating purifying pool 15 pumps into sludge concentrating pot 43 by sludge delivery pump 42 after entering sludge sump 41, then pumps into belt type dewaterer 45 by sewage sludge feed pump 44 and dewater, and filtrate is back to water collecting basin 2, mud cake outward transport.
Advanced treatment effect of the present utility model can reach 85%.
The each main processing unit processes information slip of advanced treatment system that table-1 and table-2 are petrochemical wastewater described in the utility model.
the each main processing unit processes information slip of table-1 advanced treatment system
quality of reused water situation after table-2 advanced treatment
From the above, the advanced treatment system of petrochemical wastewater described in the utility model, has simple to operately, and processing efficiency is high, and cost of investment is relatively low, and processes the advanced treatment system of the petrochemical wastewater that risk is low from experiment lab scale and construction waste water.
Claims (5)
1. an advanced treatment system for petrochemical wastewater, comprises by consisting of channel or connected water collecting basin (2), homogeneous regulating tank (3), oil partiting precipitation pool (4), air flotation pool (5), 1# intermediate pool (6), hydrolysis acidification pool (7), denitrification pond (8), deep aerating pond (9), coagulation floatation (10), 2# intermediate pool (11), ozone oxidation pond (12), stripping pond (13), BAF biochemistry pool (14), mechanical accelerating purifying pool (15), clean water basin (16) and the advanced treatment unit of pipeline successively.
2. the advanced treatment system of petrochemical wastewater as claimed in claim 1, is characterized in that described advanced treatment unit is made up of the more medium filter being connected by pipeline (51), ultra-filtration equipment (52), ultrafiltration product pond (53) and reverse osmosis unit (55), reuse water tank (56).
3. the advanced treatment system of petrochemical wastewater as claimed in claim 1 or 2, it is characterized in that described homogeneous regulating tank (3), oil partiting precipitation pool (4) are connected with floating oil collecting pond (21) by pipeline respectively, floating oil collecting pond (21) are connected with oil slick tank (23) by oil slick transferpump (22).
4. the advanced treatment system of petrochemical wastewater as claimed in claim 1 or 2, it is characterized in that described homogeneous regulating tank (3), oil partiting precipitation pool (4), air flotation pool (5) are connected with greasy filth pond (31) by pipeline respectively, greasy filth pond (31) is connected with greasy filth concentration tank (33) by greasy filth transferpump (32), and greasy filth concentration tank (33) is connected with centrifuge (35) by greasy filth fresh feed pump (34).
5. the advanced treatment system of petrochemical wastewater as claimed in claim 1 or 2, it is characterized in that described coagulation floatation (10), mechanical accelerating purifying pool (15) are connected with sludge sump (41) by pipeline respectively, sludge sump (41) is connected with sludge concentrating pot (43) by sludge delivery pump (42), and sludge concentrating pot (43) is connected with belt type dewaterer (45) by sewage sludge feed pump (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663158.8U CN203683308U (en) | 2013-10-26 | 2013-10-26 | Advanced treatment system of petrochemical wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320663158.8U CN203683308U (en) | 2013-10-26 | 2013-10-26 | Advanced treatment system of petrochemical wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203683308U true CN203683308U (en) | 2014-07-02 |
Family
ID=51005236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320663158.8U Expired - Fee Related CN203683308U (en) | 2013-10-26 | 2013-10-26 | Advanced treatment system of petrochemical wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203683308U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261620A (en) * | 2014-09-26 | 2015-01-07 | 江苏省海安石油化工厂 | Petrochemical wastewater treatment method |
| CN107285508A (en) * | 2017-06-12 | 2017-10-24 | 四川奥恒环保科技有限公司 | High salinity oil extraction Waste Water Treatment |
| CN110183064A (en) * | 2019-07-02 | 2019-08-30 | 科盛环保科技股份有限公司 | A kind of petrochemical wastewater processing system |
-
2013
- 2013-10-26 CN CN201320663158.8U patent/CN203683308U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261620A (en) * | 2014-09-26 | 2015-01-07 | 江苏省海安石油化工厂 | Petrochemical wastewater treatment method |
| CN107285508A (en) * | 2017-06-12 | 2017-10-24 | 四川奥恒环保科技有限公司 | High salinity oil extraction Waste Water Treatment |
| CN110183064A (en) * | 2019-07-02 | 2019-08-30 | 科盛环保科技股份有限公司 | A kind of petrochemical wastewater processing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101804555B1 (en) | WasteWater High-Class Treatment System to remove High-Density Pollutant and Method thereof | |
| CN104803544A (en) | Treatment method of livestock waste water and device thereof | |
| CN101219842A (en) | Technique and equipment for recycling leachate of garbage | |
| CN104556569A (en) | Method and system for treatment of oil shale distillation sewage | |
| CN102107988A (en) | Phenol-amine wastewater treatment and recycling method and device | |
| CN105481174A (en) | Wastewater treatment system in rubber and synthetic plastic industry | |
| KR20180116806A (en) | Bio-reactor for sewage treatment and sewage treatment system comprising the same | |
| KR102100991B1 (en) | Liquefied fertilizer purification apparatus using porous ceramic membrane | |
| CN201746432U (en) | Apparatus for strengthening treatment of coking waste water | |
| CN203683308U (en) | Advanced treatment system of petrochemical wastewater | |
| CN203360192U (en) | Treatment device for difficultly degradable industrial wastewater | |
| CN106277553A (en) | The processing method of the dense water of reverse osmosis (RO) and equipment | |
| JP2008023411A (en) | Method for treating waste water when biodiesel fuel is washed | |
| CN106536426B (en) | Biological purification method of waste water | |
| CN103739144A (en) | Detergent synthesis wastewater treatment technology | |
| CN211620257U (en) | Ozone catalytic oxidation coupling microalgae method wastewater treatment system | |
| CN102491599A (en) | Domestic sewage integrated-treatment method | |
| CN103896457A (en) | Fine chemical wastewater treatment process | |
| CN101428936B (en) | Treatment process for suspended matter-containing wastewater | |
| KR20180116805A (en) | Bio-reactor for sewage treatment and sewage treatment system comprising the same | |
| CN203582639U (en) | Petrochemical wastewater treatment system | |
| CN201553670U (en) | Reverse osmosis desalination multi-stage pretreatment landfill leachate reuse equipment | |
| CN105776684A (en) | Urban sewage treatment and resource recycling method | |
| RU2439001C1 (en) | Method of treating waste water | |
| CN103508629A (en) | Wastewater treatment system for food industry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Li Inventor after: Lu Pinghanzong Inventor before: Liu Li Inventor before: Lu Huahanzong |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIU LI LU HUAHANZONG TO: LIU LI LU PINGHANZONG |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Advanced treatment system of petrochemical wastewater Effective date of registration: 20190116 Granted publication date: 20140702 Pledgee: Caixin Guoxing Real Estate Development Co.,Ltd. Pledgor: SHAANXI HUALU CHEMICAL ENVIRONMENTAL PROTECTION Co.,Ltd. Registration number: 2019980000025 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 |