CN105712468A - Method for treating waste water difficult to biodegrade - Google Patents
Method for treating waste water difficult to biodegrade Download PDFInfo
- Publication number
- CN105712468A CN105712468A CN201410724006.3A CN201410724006A CN105712468A CN 105712468 A CN105712468 A CN 105712468A CN 201410724006 A CN201410724006 A CN 201410724006A CN 105712468 A CN105712468 A CN 105712468A
- Authority
- CN
- China
- Prior art keywords
- activated carbon
- transition metal
- metal oxide
- active carbon
- waste water
- 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.)
- Granted
Links
Abstract
The invention discloses a method for treating waste water difficult to biodegrade. The method comprises the following steps: (1) adding active carbon into a biochemical pool to form an active carbon-microbial zoogloea biochemical system, wherein a ratio of added active carbon to COD is 0.5-50 g: 1 g, and the active carbon contains, by weight, 0.05 to 10% of transition metal oxide; (2) allowing active carbon-containing sludge formed in the step (1) to undergo precipitation and separation in a secondary precipitation basin and then to enter an ozone reactor for ozonization; and (3) allowing the active carbon-containing sludge treated in the step (3) to flow back to the biochemical pool for cyclic utilization. The method cyclically utilizes powdery active carbon, reduces the output of sludge, improves treatment effect of waste water difficult to biodegrade and substantially decreases operation cost of PACT process.
Description
Technical field
The invention belongs to field of waste water treatment, relate to a kind of group technology processing waste water difficult for biological degradation, relate in particular to a kind of method adopting PACT PROCESS FOR TREATMENT waste water difficult for biological degradation.The method can be widely applied to the process of waste water difficult for biological degradation.
Background technology
Along with the worsening shortages of domestic crude resources, oil property increasingly severe, increasing Petrochemical Enterprises starts to process high-sulfur, high-acid crude oil.Owing to oil property there occurs significant change, the main pollutant consistence in the discharge capacity of Shi Quan factory sewage and sewage all obtains the increase of certain amplitude.Oil refining sewerage, after traditional oil removal, flotation process, still contains multi-ring, heterocycle and phenol compound in a large number in water, these Organic substances are difficult to biodegradation, and therefore, conventional Biochemical Treatment is generally poor.
Adding, to traditional activated Sludge System, the PACT technology that Powdered Activated Carbon is du pont company's exploitation, PACT technology is activated sludge and Powdered Activated Carbon to be combined, and both combineds effect strengthen the removal to pollutant.Owing to the specific surface area of Powdered Activated Carbon is big, refractory organic in adsorbable water, hard-degraded substance and the concentration of noxious substance in such macro environment reduce, and the inhibitory action of microorganism is also weakened relatively.On the other hand, microorganism can adhere to grow on Powdered Activated Carbon, and degradable is adsorbed on the organic pollution on Powdered Activated Carbon simultaneously.This synergism is that microbial growth metabolic activity has built good environment, strengthens the process to waste water difficult for biological degradation.
PACT technique is in running, and the biological activated sludge containing Powdered Activated Carbon enters second pond, can produce the substantial amounts of mud containing activated carbon, cause secondary pollution, and Powdered Activated Carbon is not recycled, and operating cost is higher.CN102616922A proposes a kind of renewable Powdered Activated Carbon that recycles and processes the PACT new technology of waste water difficult for biological degradation.Through dry, dry distilling and activation processing after the sludge dewatering with activated carbon produced in second pond, making the Organic substance of powder electroless plating decompose volatilization, activated sludge pyrolysis simultaneously is that activated carbon carries out reuse.Though the recyclable Powdered Activated Carbon of this method, pyrolysis temperature is at 500 ~ 600 DEG C, and activation temperature is at 800 ~ 950 DEG C, application process energy consumption is huge, and its structure is also had destruction by high temperature regeneration activated carbon, causing activated carbon intensity and performance to reduce, long-term circulation can cause water treatment effect to decline.
Summary of the invention
For solving the deficiencies in the prior art, the present invention proposes a kind of PACT method processing waste water difficult for biological degradation.The method had both recycled Powdered Activated Carbon, decreased again the yield of mud, improve waste water difficult for biological degradation treatment effect, greatly reduced the operating cost of PACT technique.
A kind of method processing waste water difficult for biological degradation, comprises the following steps:
(1) in biochemistry pool, activated carbon is added, form activated carbon-microbial bacteria micelle biochemical system, activated carbon addition is 0.5 ~ 50g activated carbon/gCOD, preferably 1.5 ~ 10g activated carbon/gCOD, it is preferred that 3.5 ~ 6g activated carbon/gCOD, described activated carbon content meter by weight contains the transition metal oxide of 0.05 ~ 10%, it is preferable that 0.1 ~ 1.5%, it is preferred that 0.4 ~ 0.8%；
(2) mud containing activated carbon formed in step (1) enters ozone reactor in second pond and carries out ozonation treatment after precipitate and separate；
(3) by step (3) process after be circulated use containing in activated carbon sludge reflux to biochemistry pool.
In the inventive method step (1), the operating condition of biochemistry pool is: volumetric loading 0.1 ~ 3.0kgCOD/ (m3D), hydraulic detention time 4 ~ 12h, it is preferable that volumetric loading 1.0 ~ 1.2kgCOD/ (m3D), hydraulic detention time 6 ~ 8h.
In the inventive method step (1), described transition metal oxide includes one or more in Fe, Mn, Co, Ni, Cu, La, Ce, it is preferable that Ni or Cu.
In the inventive method step (1), the described activated carbon containing transition metal oxide can adopt commercial goods, such as the activated-carbon catalyst that Beijing Bishuiyuan Science and Technology Co., Ltd produces, or adopt prior art to be prepared, for example with conventional infusion process, transition metal oxide is loaded on activated carbon, cross volume impregnation or incipient impregnation.
In the inventive method step (1), the described activated carbon containing transition metal oxide is adopted and is prepared with the following method:
A) in deionized water, add soluble transition metal salt, then reconcile forming it into colloid solution with alkali liquor；
B) activated carbon is joined and the colloid solution of step a) is beaten into activated carbon serosity, stir 1 ~ 6 hour；
C) then regulate activated carbon slurry pH value to 11 ~ 12 with alkali liquor, continue stirring 0.5 ~ 3 hour, after roasting under filtration, washing, inert atmosphere protection, prepare the activated carbon of carrying transition metal oxide.
In said method, described soluble transition metal salt includes one or more mixing in transition metal nitrate, carbonate, sulfate or chlorate.
In said method, in described activated carbon serosity, activated carbon is 1:5 ~ 20 with the mass ratio of water, it is preferred to 1:5 ~ 15.
In said method, described alkali liquor is NaOH, NaCO3、NaHCO3、KOH、KCO3、KHCO3、(NH2)2A kind of or arbitrarily several mixing of CO, the mass percent concentration of alkali liquor is 0.1 ~ 30%.
In the inventive method step (2), ozonation treatment condition is 2 ~ 20mg/gSS, it is preferable that 5 ~ 10mg/gSS, the time of staying 10 ~ 30min.
In the inventive method step (3), it is possible to supplement the activated carbon containing transition metal oxide of 10 ~ 20wt%.
Beneficial effects of the present invention is as follows: by adding the activated carbon containing transition metal to the biochemical system processing waste water difficult for biological degradation, the particularly homemade activated carbon containing transition metal oxide, can refractory organic in quick adsorption sewage, thus reducing this type organic inhibitory action to microorganism.Microorganism in activated sludge is centered by the activated carbon containing transition metal oxide, the parcel activated carbon containing transition metal oxide forms zoogloea flco, enhance microbial metabolism ability, the activated carbon mud containing transition metal oxide formed is back to former biochemical system after ozonisation Regeneration Treatment, reach the dual purpose of activated carbon mud regeneration that low-temperature atmosphere-pressure contains transition metal oxide and mud Sources decreasing, greatly reduce the operating cost of PACT technique, there is good economic benefit.
Detailed description of the invention
By the following examples and comparative example further illustrate process and the effect of the inventive method, in embodiment and comparative example, wt% is mass fraction if no special instructions, the activated carbon of homemade carrying transition metal oxide, activated carbon is purchased in Shanghai Ji Bao activated carbon company limited, the character of activated carbon is as follows: the activated carbon particle size scope more than 90% is at 0.63 ~ 2.0mm, loading density 450 ~ 550g/L, intensity is 94.
Embodiment 1
Processing the air supporting water outlet (i.e. total water inlet of biochemistry pool) of certain oil plant domestic, main water quality index is: COD is 275mg/L, BOD5For 58.3mg/L, pH value 6.79, volatile phenol 19.1mg/L, the activated carbon of load nickel oxide purchases the activated-carbon catalyst produced in Beijing Bishuiyuan Science and Technology Co., Ltd, and the weight content of nickel oxide is 0.1%.Air supporting water outlet processes through catalytic ozonation through PACT biochemical treatment, returned sludge, and its concrete operations condition and treatment effect are shown in Table 1.
Table 1
Embodiment 2
Processing the anaerobic effluent of certain alcohol waste water, main water quality index is: COD is 2460mg/L, BOD5For 320mg/L, pH value 7.56, ammonia nitrogen 56mg/L, COD are 2460mg/L, BOD5For 320mg/L, pH value 7.56, ammonia nitrogen 56mg/L, the activated carbon of loaded copper oxide adopts conventional equi-volume impregnating to prepare, and the weight content of copper oxide is 1.5%.Anaerobic effluent processes through catalytic ozonation through PACT biochemical treatment, returned sludge, and its concrete operations condition and treatment effect are shown in Table 2.
Table 2
| Processing unit title | Process unit scale and mainly comprise | Main service condition and control parameter | Treatment effect |
| Biochemical system | PACT reactor, lucite material, reactor volume 20 L | Volumetric loading 1.2 kg COD/ (m3D)；Hydraulic detention time 16 h；Copper oxide active Pd/carbon catalyst dosage 5 g/g COD；Sludge concentration 8000 mg/L | Water outlet COD 280 mg/L；BOD5 16 mg/L；Ammonia nitrogen 3.1 mg/L； |
| Sludge ozone catalytic oxidation system | Stainless steel, treating capacity 2L | Ozone dosage 20 mg/g SS；Response time 30 min | Mud decrement 42% |
Embodiment 3
With embodiment 1, simply the activated carbon (load capacity is with embodiment 1) of load nickel oxide is adopted and is prepared with the following method: add nickel nitrate in deionized water, then mass concentration be 5% sodium hydroxide reconcile that to make its pH value be 8.5 formation colloid solution；Being added by activated carbon in colloid solution and be beaten into activated carbon serosity, the mass ratio of activated carbon and water is 1:5, stirs 2 hours；Then continue to regulate activated carbon slurry pH value to 12 with sodium hydroxide solution, continue stirring 1 hour, prepare after filtration, washing, the lower roasting of nitrogen atmosphere protection.
Air supporting water outlet is COD50mg/L, BOD after PACT biochemical system processes54.1mg/L, volatile phenol 0.2mg/L；Returnedactivatedsludge is decrement 62% after catalytic ozonation processes.
Embodiment 4
With embodiment 2, simply the activated carbon (load capacity is with embodiment 2) of loaded copper oxide is adopted and is prepared with the following method: add copper nitrate in deionized water, then mass concentration be 25% sodium hydroxide reconcile that to make its pH value be 9 formation colloid solution；Being added by activated carbon in colloid solution and be beaten into activated carbon serosity, the mass ratio of activated carbon and water is 1:15, stirs 5 hours；Then continue to regulate activated carbon slurry pH value to 11 with sodium hydroxide solution, continue stirring 2 hours, prepare after filtration, washing, the lower roasting of nitrogen atmosphere protection.
Anaerobic effluent is COD160mg/L, BOD after PACT biochemical system processes512mg/L, ammonia nitrogen 2.7mg/L；Returnedactivatedsludge is decrement 70% after catalytic ozonation processes.
Comparative example 1
With embodiment 1, simply add the activated carbon of not load nickel oxide.Air supporting water outlet is COD86mg/L, BOD after PACT biochemical system processes512mg/L, volatile phenol 2.1mg/L；Returnedactivatedsludge is decrement 26% after catalytic ozonation processes.
Claims (15)
1. the method processing waste water difficult for biological degradation, it is characterised in that: comprise the following steps:
(1) adding activated carbon in biochemistry pool, form activated carbon-microbial bacteria micelle biochemical system, activated carbon addition is 0.5 ~ 50g activated carbon/gCOD, and described activated carbon content meter by weight contains the transition metal oxide of 0.05 ~ 10%；
(2) mud containing activated carbon formed in step (1) enters ozone reactor in second pond and carries out ozonation treatment after precipitate and separate；
(3) by step (3) process after be circulated use containing in activated carbon sludge reflux to biochemistry pool.
2. method according to claim 1, it is characterised in that: step (1) activated carbon addition is 1.5 ~ 10g activated carbon/gCOD, and described activated carbon content meter by weight contains 0.1 ~ 1.5% transition metal oxide.
3. method according to claim 1, it is characterised in that: step (1) activated carbon addition is 3.5 ~ 6g activated carbon/gCOD, and described activated carbon content meter by weight contains 0.4 ~ 0.8% transition metal oxide.
4. method according to claim 1, it is characterised in that: the operating condition of step (1) biochemistry pool is: volumetric loading 0.1 ~ 3.0kgCOD/ (m3D), hydraulic detention time 4 ~ 12h.
5. method according to claim 4, it is characterised in that: the operating condition of biochemistry pool is: volumetric loading 1.0 ~ 1.2kgCOD/ (m3D), hydraulic detention time 6 ~ 8h.
6. method according to claim 1, it is characterised in that: the transition metal oxide described in step (1) includes one or more in Fe, Mn, Co, Ni, Cu, La, Ce.
7. method according to claim 6, it is characterised in that: described transition metal oxide is Ni or Cu.
8. method according to claim 1, it is characterised in that: the activated carbon containing transition metal oxide described in step (1) adopts commercial goods or adopts prior art to be prepared.
9. method according to claim 1, it is characterised in that: the activated carbon containing transition metal oxide described in step (1) is adopted and is prepared with the following method:
A) in deionized water, add soluble transition metal salt, then reconcile forming it into colloid solution with alkali liquor；
B) activated carbon is joined and the colloid solution of step a) is beaten into activated carbon serosity, stir 1 ~ 6 hour；
C) then regulate activated carbon slurry pH value to 11 ~ 12 with alkali liquor, continue stirring 0.5 ~ 3 hour, after roasting under filtration, washing, inert atmosphere protection, prepare the activated carbon of carrying transition metal oxide.
10. method according to claim 9, it is characterised in that: described soluble transition metal salt includes one or more mixing in transition metal nitrate, carbonate, sulfate or chlorate.
11. method according to claim 9, it is characterised in that: in described activated carbon serosity, activated carbon is 1:5 ~ 20 with the mass ratio of water.
12. method according to claim 9, it is characterised in that: described alkali liquor is NaOH, NaCO3、NaHCO3、KOH、KCO3、KHCO3、(NH2)2A kind of or arbitrarily several mixing of CO, the mass percent concentration of alkali liquor is 0.1 ~ 30%.
13. method according to claim 1, it is characterised in that: in step (2), ozonation treatment condition is 2 ~ 20mg/gSS, the time of staying 10 ~ 30min.
14. method according to claim 13, it is characterised in that: ozonation treatment condition is 5 ~ 10mg/gSS.
15. method according to claim 1, it is characterised in that: step (3) is supplemented the activated carbon containing transition metal oxide of 10 ~ 20wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410724006.3A CN105712468B (en) | 2014-12-04 | 2014-12-04 | A method of processing waste water difficult for biological degradation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410724006.3A CN105712468B (en) | 2014-12-04 | 2014-12-04 | A method of processing waste water difficult for biological degradation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105712468A true CN105712468A (en) | 2016-06-29 |
| CN105712468B CN105712468B (en) | 2019-03-19 |
Family
ID=56146782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410724006.3A Active CN105712468B (en) | 2014-12-04 | 2014-12-04 | A method of processing waste water difficult for biological degradation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105712468B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626795A (en) * | 2019-01-18 | 2019-04-16 | 宝钢湛江钢铁有限公司 | A kind of mud dewatering method containing powdered carbon of sintering device flue gas purification Wastewater from Acid Preparation |
| CN110127855A (en) * | 2019-05-10 | 2019-08-16 | 河南省图天新能源科技有限公司 | A kind of enhanced biological deamination technique of novel biogas slurry advanced treating |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341049A (en) * | 1976-09-27 | 1978-04-14 | Toyobo Co Ltd | Process for treating dirty water |
| JPH0999293A (en) * | 1995-10-06 | 1997-04-15 | Ebara Corp | Treatment of organic sewage |
| JPH09122679A (en) * | 1995-11-01 | 1997-05-13 | Ebara Corp | Method for processing organic waste water and its apparatus |
| JPH09206781A (en) * | 1996-01-31 | 1997-08-12 | Ebara Corp | Treatment of organic sewage and treating device |
| CN102616922A (en) * | 2012-04-23 | 2012-08-01 | 重庆康达环保产业（集团）有限公司 | PACT (Production Analysis Control Technique) novel process for treating non-biodegradable waste water by using circularly-reproducible powdered activated carbon |
| CN103086503A (en) * | 2013-02-26 | 2013-05-08 | 广东新大禹环境工程有限公司 | PACT (powdered activated carbon treatment) process and device, and activated carbon-microbial zoogloea culture method using same |
-
2014
- 2014-12-04 CN CN201410724006.3A patent/CN105712468B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341049A (en) * | 1976-09-27 | 1978-04-14 | Toyobo Co Ltd | Process for treating dirty water |
| JPH0999293A (en) * | 1995-10-06 | 1997-04-15 | Ebara Corp | Treatment of organic sewage |
| JPH09122679A (en) * | 1995-11-01 | 1997-05-13 | Ebara Corp | Method for processing organic waste water and its apparatus |
| JPH09206781A (en) * | 1996-01-31 | 1997-08-12 | Ebara Corp | Treatment of organic sewage and treating device |
| CN102616922A (en) * | 2012-04-23 | 2012-08-01 | 重庆康达环保产业（集团）有限公司 | PACT (Production Analysis Control Technique) novel process for treating non-biodegradable waste water by using circularly-reproducible powdered activated carbon |
| CN103086503A (en) * | 2013-02-26 | 2013-05-08 | 广东新大禹环境工程有限公司 | PACT (powdered activated carbon treatment) process and device, and activated carbon-microbial zoogloea culture method using same |
Non-Patent Citations (2)
| Title |
|---|
| 祁鲁梁等主编: "《水处理工艺与运行管理使用手册》", 31 May 2002 * |
| 阙伟等编著: "《物理化学理论与应用研究》", 30 April 2014 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626795A (en) * | 2019-01-18 | 2019-04-16 | 宝钢湛江钢铁有限公司 | A kind of mud dewatering method containing powdered carbon of sintering device flue gas purification Wastewater from Acid Preparation |
| CN110127855A (en) * | 2019-05-10 | 2019-08-16 | 河南省图天新能源科技有限公司 | A kind of enhanced biological deamination technique of novel biogas slurry advanced treating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105712468B (en) | 2019-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Bolzonella et al. | Winery wastewater treatment: a critical overview of advanced biological processes | |
| CN102583903B (en) | Method for treating antibiotic wastewater | |
| CN103771650B (en) | A kind for the treatment of process of coal gasification waste water | |
| CN114230021B (en) | Biological composite filler and preparation method and application thereof | |
| CN107651815A (en) | A kind of magnetic resin promotes the method that denitrification removes nitrate nitrogen in water removal | |
| CN105502839A (en) | Wastewater treatment system for livestock and poultry breeding | |
| CN107252686A (en) | A kind of processing method of phenol wastewater | |
| CN111606519A (en) | Advanced treatment method for electroplating wastewater | |
| CN103193312B (en) | Device and method for biologically removing cadmium metal in underground water | |
| CN105712468A (en) | Method for treating waste water difficult to biodegrade | |
| Biniaz et al. | Wastewater treatment: employing biomass | |
| CN112607915A (en) | Treatment method and treatment system for high ammonia nitrogen deodorization wastewater | |
| CN204569649U (en) | The device of a kind of waste water from dyestuff advanced treatment and reuse | |
| CN203095808U (en) | Advanced treatment system for garlic processing wastewater | |
| CN102887613A (en) | Treatment method for high-concentration industrial wastewater | |
| CN102145972B (en) | Method for reducing excess sludge of aerobic unit of sewage treatment system by activated sludge process | |
| CN104692592A (en) | Dye wastewater advanced treatment and recycling device and process | |
| CN101439909B (en) | Catalyst for biological treatment of formaldehyde industrial wastewater | |
| CN204079723U (en) | There is the microorganism doubletype Sewage treatment systems of stability | |
| CN108314179A (en) | Strengthen the method for activated sludge removal sewerage nitrogen and phosphor and toxic organic compound difficult to degrade | |
| CN110627209B (en) | Iron-coupled autotrophic denitrification system and method for removing nitrate in wastewater with low carbon-nitrogen ratio | |
| CN110054353B (en) | Garbage incineration power generation leachate treatment system | |
| CN103395951B (en) | System capable of utilizing acid to neutralize slags and dehydrated aluminum sludge to treat nitrogenous wastewater and method thereof | |
| CN102765799A (en) | Method of chain scission for high concentration persistent organic pollutants in wastewater | |
| CN108862845B (en) | Printing and dyeing wastewater treating agent, preparation method and treatment process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |