CN107265815A - Sewage treatment process in septic tank - Google Patents
Sewage treatment process in septic tank Download PDFInfo
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- CN107265815A CN107265815A CN201710610530.1A CN201710610530A CN107265815A CN 107265815 A CN107265815 A CN 107265815A CN 201710610530 A CN201710610530 A CN 201710610530A CN 107265815 A CN107265815 A CN 107265815A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
- C02F3/288—Particular arrangements for anaerobic reactors comprising septic tanks combined with a filter
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/002—Apparatus and plants for the biological treatment of water, waste water or sewage comprising an initial buffer container
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The present invention relates to sewage treatment area there is provided sewage treatment process in a kind of septic tank, comprise the following steps：Coarse filtration, set hollow fiber microfiltration membrane to be filtered in bioselection groove, carry out anti-nitration reaction, sewage in anoxic biochemistry pool and carries out mud-water separation, sewage in second pond being sufficiently mixed contact sterilizing in ozone contact tank, regenerate pond standing.Hydrophilic chain extender of the present invention can weaken bacterial activity and have preferable adsorption capacity to bacterium, adsorb germy hydrophilic chain extender and react to form precipitation and be separated and discharged in company with sludge with triclosan, the addition of nitrogen-fixing bacteria can pin nitrogen in sewage, ammonia and the heavy metal ion formation complex and Precipitation in sewage.
Description
Technical field
The present invention relates to sewage treatment area, and in particular to sewage treatment process in a kind of septic tank.
Background technology
China《Law on the Prevention and Treatment of Water Pollution》Regulation is to that can not include the residential block, tourist attractions, degree of municipal sewage collection system system
The sewage of the scattered crowd settlement discharge such as false village, sanatorium, airport, railway station, economic development zone and the land of independent industries and mining area
Industrial wastewater answer treatment in situ qualified discharge.Sanatorium, large hotel hotel, large-scale restaurant, amusement and travel holiday village, landscape
Area mountain villa, Expressway Service are all dispersant type domestic wastewater emission sources.Sanatorium, holiday village, mountain villa are typically all close near the mountain
Water, away from city, it is impossible to be connected with urban drainage pipe network.Sensitive water body is additionally related to, therefore the standard of discharge requires very high,
If realizing qualified discharge, the investment of sewage treatment facility can be very big, and operating cost also can be improved accordingly.
All collect sanitary wastewater using septic tank in many places at present, a large amount of sanitary wastewaters need to be handled with up to
To discharge standard.
The content of the invention
The technical problems to be solved by the invention are to provide sewage treatment process in a kind of septic tank.
The technical problems to be solved by the invention are realized using following technical scheme：
Sewage treatment process in a kind of septic tank, comprises the following steps：
(1) enter oil interceptor after the sewage of structures septic tank first passes around mechanical grille coarse filtration, enter back into and contain
There is the coarse filtration pond of hydrophilic chain extender；
(2) sewage arrives preliminary sedimentation tank in coarse filtration pond by inlet water lifting pumps lifting, and preliminary sedimentation tank top solids content is few
Sewage, which is pumped into bioselection groove, bioselection groove, sets hollow fiber microfiltration membrane to be filtered；
(3) anti-nitration reaction is carried out in the sewage feeding anoxic biochemistry pool that bioselection groove comes out, water outlet gravity flow enters
Oxygen biochemistry pool；
(4) sewage come from anoxic biochemistry pool is aerated progress aerobic biochemical reaction, a water outlet part in aerobic biochemical pool
Anoxic biochemistry pool is back to by reflux pump as nitrification liquid, anti-nitration reaction is carried out；Another part is flowed into certainly by downflow weir
Enter second pond；
(5) sewage come from aerobic biochemical pool carries out mud-water separation in second pond, and sludge is in the sludge bucket of second pond
Deposition concentration, is discharged into storage basin, top clarified solution enters clear water reserviors by downflow weir gravity flow by fluid pressure by sludge valve,
Being added in clear water reserviors has the mixture that tartaric acid, myristic acid are mixed in 1: 1 ratio, and adding 0.01kg according to every cubic meter of water mixes
The standard of compound；
(6) water outlet come from second pond flows automatically to clear water reserviors, and biological activated carbon reactor, water are then transported to filter pump
Enter from the bottom of biological activated carbon reactor, two biological activated carbon reactors are in parallel, and built-in activated carbon, water outlet passes through top
Downflow weir flows automatically to ozone contact tank；
(7) clear water come from biological activated carbon reactor in ozone contact tank, with produced in ozone generator it is smelly
Carrier of oxygen is sufficiently mixed contact sterilizing by sterilizing gas distributor in ozone contact tank；
(8) the sewage feeding regeneration pond after sterilizing is stood, and nitrogen-fixing bacteria are added with pond while regenerating, and every 1
Hour is passed through pure oxygen into regeneration pond, and 1 liter of pure oxygen is passed through for standard by every cubic meter of water.
Further, hydrophilic chain extender is maleic acid in the step (1).
Further, pH value in acidification pool acidification, acidification pool is sent into the water outlet of bioselection groove in the step (2)
Stabilization is in 6.7-6.8, while adding the OPC solution that procyanidin concentration is 0.25~1mg/mL, sewage into acidification pool
Anoxic biochemistry pool is re-fed into after processing.
Further, triclosan is added with the anoxic biochemistry pool.
Further, chitosan is also added with the anoxic biochemistry pool, addition is added according to every cubic metre of sewage
0.1kg chitosans are defined.
Further, being added in the aerobic biochemical pool has calcium sulfate or barium sulfate.
Further, regeneration pond was passed through an ammonia every 10 minutes in the step (8), logical by every cubic meter of water
Enter 1 liter of pure oxygen for standard.
The beneficial effects of the invention are as follows：Hydrophilic chain extender can weaken bacterial activity and have preferable energy of adsorption to bacterium
Power, the germy hydrophilic chain extender of absorption reacts to be formed to precipitate with triclosan to be separated and discharged in company with sludge, the addition of nitrogen-fixing bacteria
Nitrogen in sewage, ammonia and the heavy metal ion formation complex and Precipitation in sewage can be pinned.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.
Embodiment 1
Sewage treatment process in a kind of septic tank, comprises the following steps：
(1) enter oil interceptor after the sewage of structures septic tank first passes around mechanical grille coarse filtration, enter back into and contain
There is the coarse filtration pond of hydrophilic chain extender；
(2) sewage arrives preliminary sedimentation tank in coarse filtration pond by inlet water lifting pumps lifting, and preliminary sedimentation tank top solids content is few
Sewage, which is pumped into bioselection groove, bioselection groove, sets hollow fiber microfiltration membrane to be filtered；
(3) anti-nitration reaction is carried out in the sewage feeding anoxic biochemistry pool that bioselection groove comes out, water outlet gravity flow enters
Oxygen biochemistry pool；
(4) sewage come from anoxic biochemistry pool is aerated progress aerobic biochemical reaction, a water outlet part in aerobic biochemical pool
Anoxic biochemistry pool is back to by reflux pump as nitrification liquid, anti-nitration reaction is carried out；Another part is flowed into certainly by downflow weir
Enter second pond；
(5) sewage come from aerobic biochemical pool carries out mud-water separation in second pond, and sludge is in the sludge bucket of second pond
Deposition concentration, is discharged into storage basin, top clarified solution enters clear water reserviors by downflow weir gravity flow by fluid pressure by sludge valve,
Being added in clear water reserviors has the mixture that tartaric acid, myristic acid are mixed in 1: 1 ratio, and adding 0.01kg according to every cubic meter of water mixes
The standard of compound；
(6) water outlet come from second pond flows automatically to clear water reserviors, and biological activated carbon reactor, water are then transported to filter pump
Enter from the bottom of biological activated carbon reactor, two biological activated carbon reactors are in parallel, and built-in activated carbon, water outlet passes through top
Downflow weir flows automatically to ozone contact tank；
(7) clear water come from biological activated carbon reactor in ozone contact tank, with produced in ozone generator it is smelly
Carrier of oxygen is sufficiently mixed contact sterilizing by sterilizing gas distributor in ozone contact tank；
(8) the sewage feeding regeneration pond after sterilizing is stood, and nitrogen-fixing bacteria are added with pond while regenerating, and every 1
Hour is passed through pure oxygen into regeneration pond, and 1 liter of pure oxygen is passed through for standard by every cubic meter of water.
Hydrophilic chain extender is maleic acid in step (1).
PH value is stable in 6.7-6.8 in bioselection groove water outlet feeding acidification pool acidification, acidification pool in step (2),
The OPC solution that procyanidin concentration is 0.5mg/mL is added into acidification pool simultaneously, anoxic life is re-fed into after sewage disposal
Change pond.
Triclosan is added with anoxic biochemistry pool.
Chitosan is also added with anoxic biochemistry pool, addition adds 0.1kg chitosans according to every cubic metre of sewage and is defined.
Being added in aerobic biochemical pool has calcium sulfate or barium sulfate.
Regeneration pond was passed through an ammonia every 10 minutes in step (8), and it is mark to be passed through 1 liter of pure oxygen by every cubic meter of water
It is accurate.
Embodiment 2
Sewage treatment process in a kind of septic tank, comprises the following steps：
(1) enter oil interceptor after the sewage of structures septic tank first passes around mechanical grille coarse filtration, enter back into and contain
There is the coarse filtration pond of hydrophilic chain extender；
(2) sewage arrives preliminary sedimentation tank in coarse filtration pond by inlet water lifting pumps lifting, and preliminary sedimentation tank top solids content is few
Sewage, which is pumped into bioselection groove, bioselection groove, sets hollow fiber microfiltration membrane to be filtered；
(3) anti-nitration reaction is carried out in the sewage feeding anoxic biochemistry pool that bioselection groove comes out, water outlet gravity flow enters
Oxygen biochemistry pool；
(4) sewage come from anoxic biochemistry pool is aerated progress aerobic biochemical reaction, a water outlet part in aerobic biochemical pool
Anoxic biochemistry pool is back to by reflux pump as nitrification liquid, anti-nitration reaction is carried out；Another part is flowed into certainly by downflow weir
Enter second pond；
(5) sewage come from aerobic biochemical pool carries out mud-water separation in second pond, and sludge is in the sludge bucket of second pond
Deposition concentration, is discharged into storage basin, top clarified solution enters clear water reserviors by downflow weir gravity flow by fluid pressure by sludge valve,
Being added in clear water reserviors has the mixture that tartaric acid, myristic acid are mixed in 1: 1 ratio, and adding 0.01kg according to every cubic meter of water mixes
The standard of compound；
(6) water outlet come from second pond flows automatically to clear water reserviors, and biological activated carbon reactor, water are then transported to filter pump
Enter from the bottom of biological activated carbon reactor, two biological activated carbon reactors are in parallel, and built-in activated carbon, water outlet passes through top
Downflow weir flows automatically to ozone contact tank；
(7) clear water come from biological activated carbon reactor in ozone contact tank, with produced in ozone generator it is smelly
Carrier of oxygen is sufficiently mixed contact sterilizing by sterilizing gas distributor in ozone contact tank；
(8) the sewage feeding regeneration pond after sterilizing is stood, and nitrogen-fixing bacteria are added with pond while regenerating, and every 1
Hour is passed through pure oxygen into regeneration pond, and 1 liter of pure oxygen is passed through for standard by every cubic meter of water.
Hydrophilic chain extender is maleic acid in step (1).
PH value is stable in 6.7-6.8 in bioselection groove water outlet feeding acidification pool acidification, acidification pool in step (2),
The OPC solution that procyanidin concentration is 1mg/mL is added into acidification pool simultaneously, anoxic is re-fed into after sewage disposal biochemical
Pond.
Triclosan is added with anoxic biochemistry pool.
Chitosan is also added with anoxic biochemistry pool, addition adds 0.1kg chitosans according to every cubic metre of sewage and is defined.
Being added in aerobic biochemical pool has calcium sulfate or barium sulfate.
Regeneration pond was passed through an ammonia every 10 minutes in step (8), and it is mark to be passed through 1 liter of pure oxygen by every cubic meter of water
It is accurate.
Experiment one
The sewage of some cell septic tank is divided into three parts of equivalent, embodiment 1,2 and existing sewage disposal is utilized
Method is handled every part of sewage respectively.Result of the test such as following table：
Experiment is proved：State quota is fully achieved in sewage after sewage treatment process processing of the present invention.
Its Plays one：《Urban sewage reutilization urban reclaimed water water quality》(GB/T18920-2002) it is most stringent of in
Index
Standard two：《Urban sewage reutilization water for scenic environment use water quality》(GB/T18921-2002) most stringent of water in
Index in scape
Experiment two
Selection example 1,2 processing methods；In the case of other processing steps are constant by embodiment 1,2 processing methods
Hydrophilic chain extender is tested after removing, and selects sewage in the septic tank of certain office building, and sewage is divided into 4 parts of equivalent, examination
Test result such as following table.
As seen from the above table, adding hydrophilic chain extender can to remove bacterium completely in sewage disposal.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. sewage treatment process in a kind of septic tank, it is characterised in that comprise the following steps：
(1) enter oil interceptor after the sewage of structures septic tank first passes around mechanical grille coarse filtration, enter back into containing parent
The coarse filtration pond of water chain extender；
(2) sewage arrives preliminary sedimentation tank, the few sewage of preliminary sedimentation tank top solids content in coarse filtration pond by inlet water lifting pumps lifting
Being pumped into bioselection groove, bioselection groove sets hollow fiber microfiltration membrane to be filtered；
(3) anti-nitration reaction is carried out in the sewage feeding anoxic biochemistry pool that bioselection groove comes out, water outlet gravity flow enters aerobic life
Change pond；
(4) sewage come from anoxic biochemistry pool is aerated progress aerobic biochemical reaction, a part of conduct of water outlet in aerobic biochemical pool
Nitrification liquid is back to anoxic biochemistry pool by reflux pump, carries out anti-nitration reaction；Another part enters two by downflow weir gravity flow
Heavy pond；
(5) sewage come from aerobic biochemical pool carries out mud-water separation in second pond, and sludge is deposited in the sludge bucket of second pond
Concentration, is discharged into storage basin, top clarified solution enters clear water reserviors, clear water by downflow weir gravity flow by fluid pressure by sludge valve
Being added in pond has tartaric acid, myristic acid by 1:The mixture of 1 ratio mixing, 0.01kg mixtures are added according to every cubic meter of water
Standard；
(6) water outlet come from second pond flows automatically to clear water reserviors, is then transported to biological activated carbon reactor with filter pump, and water is from life
The bottom of thing activated carbon reactor enters, and two biological activated carbon reactors are in parallel, and built-in activated carbon, water outlet passes through top overflow
Weir flows automatically to ozone contact tank；
(7) from the next clear water of biological activated carbon reactor in ozone contact tank, with the ozone gas produced in ozone generator
Body is sufficiently mixed contact sterilizing by sterilizing gas distributor in ozone contact tank；
(8) the sewage feeding regeneration pond after sterilizing is stood, and nitrogen-fixing bacteria are added with pond while regenerating, and every 1 hour
Pure oxygen is passed through into regeneration pond, 1 liter of pure oxygen is passed through for standard by every cubic meter of water.
2. sewage treatment process in septic tank according to claim 1, it is characterised in that hydrophilic in the step (1) to expand
Chain agent is maleic acid.
3. sewage treatment process in septic tank according to claim 1, it is characterised in that biological choosing in the step (2)
PH value in groove water outlet feeding acidification pool acidification, acidification pool is selected stable in 6.7-6.8, while adding former cyanine into acidification pool
Plain concentration is 0.25~1mg/mL OPC solution, and anoxic biochemistry pool is re-fed into after sewage disposal.
4. sewage treatment process in septic tank according to claim 1, it is characterised in that added in the anoxic biochemistry pool
There is triclosan.
5. sewage treatment process in septic tank according to claim 4, it is characterised in that also add in the anoxic biochemistry pool
Added with chitosan, addition adds 0.1kg chitosans according to every cubic metre of sewage and is defined.
6. sewage treatment process in septic tank according to claim 1, it is characterised in that added in the aerobic biochemical pool
There are calcium sulfate or barium sulfate.
7. sewage treatment process in the septic tank according to any one of claim 1 to 6, it is characterised in that the step (8)
Middle regeneration pond was passed through an ammonia every 10 minutes, and 1 liter of pure oxygen is passed through for standard by every cubic meter of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710610530.1A CN107265815A (en) | 2017-07-25 | 2017-07-25 | Sewage treatment process in septic tank |
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| CN201710610530.1A CN107265815A (en) | 2017-07-25 | 2017-07-25 | Sewage treatment process in septic tank |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109912151A (en) * | 2017-12-13 | 2019-06-21 | 中国石油化工股份有限公司 | A kind of method of broken wall anaerobism drying and other treatment residual active sludge |
| CN110845004A (en) * | 2019-11-22 | 2020-02-28 | 北京工业大学 | Method for enhancing biological degradation of triclosan in nitration system by using surfactant |
| CN111138023A (en) * | 2018-11-06 | 2020-05-12 | 漳州市俊龙新能源科技有限公司 | Membrane separation's active sludge sum sewage treatment system |
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| CN103449658A (en) * | 2012-06-01 | 2013-12-18 | 中国石油天然气股份有限公司 | Sewage treatment method |
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| CN110845004B (en) * | 2019-11-22 | 2022-01-28 | 北京工业大学 | Method for enhancing biological degradation of triclosan in nitration system by using surfactant |
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Application publication date: 20171020 |