CN108658384A - A kind of processing method of sanitary wastewater - Google Patents
A kind of processing method of sanitary wastewater Download PDFInfo
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- CN108658384A CN108658384A CN201810568048.0A CN201810568048A CN108658384A CN 108658384 A CN108658384 A CN 108658384A CN 201810568048 A CN201810568048 A CN 201810568048A CN 108658384 A CN108658384 A CN 108658384A
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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
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- 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
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- 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
- C02F2209/14—NH3-N
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention belongs to field of waste water treatment, and in particular to a kind of processing method of sanitary wastewater.The present invention can effectively detach the grease in sanitary wastewater with water by using mixing hair, and the removal effect to molecule can be increased by the filtering of feather, the grease in waste water is further removed by the effect particle of rapeseed dregs, maize straw and ammonium hydrogen carbonate simultaneously, and increases the nutriment inside water quality using ammonium hydrogen carbonate；The autogenous control ability for being increased water quality in the mixture of the present invention using cobblestone, is improved activity, is filtered to water quality using sodium humate and quartz sand, while being added diatomite and being carried out bactericidal effect to water quality, and the quality of water quality is improved；The present invention finally efficiently uses the nutriment inside waste water using biotic division, and is decomposed to the organic matter of waste water using plant and animal, further handles waste water, improves treatment effect.
Description
Technical field
The invention belongs to field of waste water treatment, and in particular to a kind of processing method of sanitary wastewater.
Background technology
With the fast development of China's economy, currently, the wastewater flow rate that domestic consumption all in cumulative year after year, is discharged therewith
It is being continuously increased.Due to the complexity of domestic water, in these sanitary wastewaters, all contain graininess impurity, protide mostly
The objectionable impurities such as substance, greasy dirt, heavy metal ion.In order to protect the environment being increasingly destroyed, it is necessary to these sanitary wastewaters into
Row purified treatment.Existing sanitary wastewater purification method mainly has flocculence, physisorphtion, microbial degradation method etc..Wherein
The application of flocculence is relatively broad.
Such as application No. is 201310388675.3 Chinese patents to disclose a kind of processing method of heavy metal containing sewage, packet
It includes：（a）Heavy metal containing sewage is introduced into sewage reaction tank；（b）Suitable ion sedimentation agent is added into heavy metal containing sewage to carry out
Sedimentation；（c）Suitable flocculant, which is added, to the heavy metal containing sewage after sedimentation carries out efficient flocculating；（d）To after adding flocculant
Heavy metal containing sewage add suitable flocculation aid；（e）The heavy metal containing sewage quiescent setting certain time after flocculation aid will be added；
（f）Flocculation after precipitation is rolled into a ball and is separated from heavy metal containing sewage.The invented technology flow is simple, and medicament stock is easy to get, at
This is cheap, and processing procedure does not generate new " three wastes ", obvious processing effect.
Such as application No. is 201310366271.4 Chinese patents to disclose a kind of oily water water scavengine agent and its preparation side
Method, the greasy dirt water scavengine agent contain following component in terms of mass parts：15~30 parts of aluminium polychloride, anionic polyacrylamide 5
~12 parts, 7~16 parts of lime, 3~10 parts of sodium hypochlorite, 3~8 parts of sodium lignin sulfonate, 3~7 parts of diammonium hydrogen phosphate, benzene sulfonic acid
5~15 parts of sodium.The sanitary wastewater cleanser that the invention provides has very strong flocculation, and with good sterilization effect
Fruit.
Such as application No. is 201410380852.8 Chinese patents to disclose a kind of condensed oil sewage processing coagulant, includes
Following components in percentage by weight：15.0~25.0% aluminium polychloride, 5.0~10.0% poly- silicon zinc sulfate, 0.5~1.0%
Polydimethyl diallyl ammonium chloride and 5.0~10.0% 3.0G polyamide-amides.Its preparation method is：By weight percentage, first
Aluminium polychloride and poly- silicon zinc sulfate are added to the water, polydimethyl diallyl ammonium chloride is added after dissolving completely and 3.0G is poly-
Amide-amine stirs evenly, and adjusts pH value to 3.0~5.0, obtains thick sanitary wastewater processing coagulant.Its advantage is that：Dosage is few,
It is cheap, and suitable for the treatment process of multifunctional rotary flow reactor；Rp demulsification and water purification effect are had both, to Heavy Oil High Temperature
Sewage has good clean-up effect；Preparation method is simple and practicable.
Although the method for purifying sanitary wastewater above by flocculence to a certain extent can be by particulate contaminant, albumen
Substance, greasy dirt, heavy metal ion etc. are removed from water, but its detersive efficiency is relatively low, and flocculent substance is in mistake after flocculation
It is still easy to remain in water body after filter；And it needs to add in water in purification and various is dissolved in water itself and the chemistry examination that is not easily recycled
Agent be easy to cause secondary pollution while decontamination.
Invention content
The technical problems to be solved by the invention：Low, the medicament for treatment effeciency in the processing procedure of current sanitary wastewater
The problem of easily remaining, causing secondary pollution, the present invention provides a kind of processing methods of sanitary wastewater.
In order to solve the above technical problems, the present invention is using technical solution as described below：
A kind of processing method of sanitary wastewater, the processing method include the following steps：
（1）It after sanitary sewage is filtered, is sent into pretreatment pool and is pre-processed, in preprocessing process, keep pre- place
The temperature for managing pond is 30~35 DEG C, collects pretreatment fluid；
（2）Pretreatment fluid is sent into mixing pit and is carried out in mixing pit, mixing is stirred, is stood, discharge liquor is collected in discharge；
（3）Discharge liquor is sent into biotic division, after the flowing of biotic division, filtering carries out sterilizing, i.e., into sterilizing pond
Complete the processing to sanitary wastewater.
The step（1）Middle pretreatment pool is that water outlet is arranged in cement pit bottom, and processing material is laid in cement pit bottom,
Laying depth is 30~35cm, and mixing hair is laid on mixture, and laying depth is 10~15cm, and is used on mixing hair top
Wire netting is fixed, that is, is built into processing pond.
The processing material is by rapeseed dregs, maize straw and ammonium hydrogen carbonate in mass ratio 4~6:8:2 are uniformly mixed, and crush,
It squeezes, high temperature drying, crushes, be sieved to get mixture.
The mixing hair is by goose feather, drake feather and chicken feather in mass ratio 5~9:4~6:5 are uniformly mixed, and are put into hydrogen peroxide
It impregnates, is rinsed with water after taking-up, it is dry, it squeezes to get mixing hair.
The step（2）Middle mixing pit is configured in mixing pit bottom laying mixture, and laying depth is 50~70cm.
The preparation method of the mixture is by sodium humate, cobblestone, quartz sand and diatomite in mass ratio 1:6~9:
3~5:3 are mixed to get mixture.
Composite soil is added in the structure of the biotic division in cement pit, and water is added into cement pit, and amount of water floods mixing
10~20cm of soil, and water inlet one end of biotic division and water outlet form slope, the gradient is 15~20 °, then plant into pond duckweed,
Reed, and carry out breeding loach and catfish.
The composite soil is rural area soil, peat soil and Pond Silt in mass ratio 7~9:4:3~5 mix；Duckweed,
The planting density of reed is 3~6 every square；The cultivation density of loach and catfish be 3~6 every square.
Compared with other methods, advantageous effects are the present invention：
（1）The present invention can effectively detach the grease in sanitary wastewater with water by using mixing hair, and pass through
The filtering of feather can increase the removal effect to molecule, while pass through the work of rapeseed dregs, maize straw and ammonium hydrogen carbonate
The grease in waste water is further removed with particle, and increases the nutriment inside water quality using ammonium hydrogen carbonate；
（2）The autogenous control ability for being increased water quality in the mixture of the present invention using cobblestone, is improved activity, uses sodium humate
And quartz sand is filtered water quality, while adding diatomite and bactericidal effect is carried out to water quality, improve the quality of water quality；
（3）The present invention finally efficiently uses the nutriment inside waste water using biotic division, and using plant and moves
Object decomposes the organic matter of waste water, further handles waste water, improves treatment effect.
Specific implementation mode
Processing material is prepared as rapeseed dregs, maize straw and ammonium hydrogen carbonate in mass ratio 4~6:8:2 are uniformly mixed, powder
It is broken, 5min is squeezed with 7MPa, and dry, pulverize at 80 DEG C, sieved with 100 mesh sieve to get mixture.
Water outlet is arranged in cement pit bottom in the structure of pretreatment pool, and processing material, laying depth are laid in cement pit bottom
For 30~35cm, mixing hair is laid on mixture, laying depth is 10~15cm, and mixing hair top using wire netting into
Row is fixed, that is, is built into processing pond.
It is by goose feather, drake feather and chicken feather in mass ratio 5~9 to mix hair:4~6:5 are uniformly mixed, and are put into 0.8mol/L dioxygens
It impregnates in water, is rinsed with water after taking-up, it is dry, 5min is squeezed to get mixing hair with 1MPa.
Mixing pit is configured in mixing pit bottom laying mixture, and laying depth is 50~70cm.
The preparation method of mixture is by sodium humate, cobblestone, quartz sand and diatomite in mass ratio 1:6~9:3~
5:3 are mixed to get mixture.
Composite soil is added in the structure of biotic division in cement pit, and water is added into cement pit, and amount of water floods composite soil 10
~20cm, and water inlet one end of biotic division forms slope with water outlet, the gradient is 15~20 °, then duckweed, reed are planted into pond
Reed, and breeding loach and catfish are carried out, composite soil is rural area soil, peat soil and Pond Silt in mass ratio 7~9:4:3~5 is mixed
It closes；Duckweed, reed planting density be 3~6 every square；The cultivation density of loach and catfish be every square 3
~6.
A kind of processing method of sanitary wastewater, the processing method include the following steps：
（1）It after sanitary sewage is filtered, is sent into pretreatment pool and is pre-processed, flow down naturally, in preprocessing process,
It is 30~35 DEG C to keep the temperature of pretreatment pool, collects pretreatment fluid；
（2）Pretreatment fluid is sent into mixing pit and is carried out in mixing pit, mixing 30min is stirred, stands 15~20min, row
Go out, collects discharge liquor；
（3）Discharge liquor is sent into biotic division, after the flowing of biotic division, filtering carries out sterilizing, i.e., into sterilizing pond
Complete the processing to sanitary wastewater.
Processing material is prepared as rapeseed dregs, maize straw and ammonium hydrogen carbonate in mass ratio 4:8:2 are uniformly mixed, and crush,
5min is squeezed with 7MPa, and dry, pulverize at 80 DEG C, is sieved with 100 mesh sieve to get mixture.
Water outlet is arranged in cement pit bottom in the structure of pretreatment pool, and processing material, laying depth are laid in cement pit bottom
For 30cm, mixing hair, laying depth 10cm are laid on mixture, and be fixed using wire netting on mixing hair top,
It is built into processing pond.
It is by goose feather, drake feather and chicken feather in mass ratio 5 to mix hair:4:5 are uniformly mixed, and are put into 0.8mol/L hydrogen peroxide and soak
Bubble, is rinsed with water after taking-up, dry, and 5min is squeezed to get mixing hair with 1MPa.
Mixing pit is configured in mixing pit bottom laying mixture, laying depth 50cm.
The preparation method of mixture is by sodium humate, cobblestone, quartz sand and diatomite in mass ratio 1:6:3:3 carry out
Mixing is to get mixture.
Composite soil is added in the structure of biotic division in cement pit, and water is added into cement pit, and amount of water floods composite soil
10cm, and water inlet one end of biotic division forms slope with water outlet, the gradient is 15 °, then duckweed, reed are planted into pond, is gone forward side by side
Row breeding loach and catfish, composite soil are rural area soil, peat soil and Pond Silt in mass ratio 7:4:3 mix；Duckweed, reed
The planting density of reed is 3 every square；The cultivation density of loach and catfish be 3 every square.
A kind of processing method of sanitary wastewater, the processing method include the following steps：
（1）It after sanitary sewage is filtered, is sent into pretreatment pool and is pre-processed, flow down naturally, in preprocessing process,
It is 30 DEG C to keep the temperature of pretreatment pool, collects pretreatment fluid；
（2）Pretreatment fluid is sent into mixing pit and is carried out in mixing pit, mixing 30min is stirred, stands 15min, be discharged, receive
Collect discharge liquor；
（3）Discharge liquor is sent into biotic division, after the flowing of biotic division, filtering carries out sterilizing, i.e., into sterilizing pond
Complete the processing to sanitary wastewater.
Processing material is prepared as rapeseed dregs, maize straw and ammonium hydrogen carbonate in mass ratio 5:8:2 are uniformly mixed, and crush,
5min is squeezed with 7MPa, and dry, pulverize at 80 DEG C, is sieved with 100 mesh sieve to get mixture.
Water outlet is arranged in cement pit bottom in the structure of pretreatment pool, and processing material, laying depth are laid in cement pit bottom
For 33cm, mixing hair, laying depth 13cm are laid on mixture, and be fixed using wire netting on mixing hair top,
It is built into processing pond.
It is by goose feather, drake feather and chicken feather in mass ratio 7 to mix hair:5:5 are uniformly mixed, and are put into 0.8mol/L hydrogen peroxide and soak
Bubble, is rinsed with water after taking-up, dry, and 5min is squeezed to get mixing hair with 1MPa.
Mixing pit is configured in mixing pit bottom laying mixture, laying depth 60cm.
The preparation method of mixture is by sodium humate, cobblestone, quartz sand and diatomite in mass ratio 1:8:4:3 carry out
Mixing is to get mixture.
Composite soil is added in the structure of biotic division in cement pit, and water is added into cement pit, and amount of water floods composite soil
15cm, and water inlet one end of biotic division forms slope with water outlet, the gradient is 18 °, then duckweed, reed are planted into pond, is gone forward side by side
Row breeding loach and catfish, composite soil are rural area soil, peat soil and Pond Silt in mass ratio 8:4:4 mix；Duckweed, reed
The planting density of reed is 5 every square；The cultivation density of loach and catfish be 5 every square.
A kind of processing method of sanitary wastewater, the processing method include the following steps：
（1）It after sanitary sewage is filtered, is sent into pretreatment pool and is pre-processed, flow down naturally, in preprocessing process,
It is 33 DEG C to keep the temperature of pretreatment pool, collects pretreatment fluid；
（2）Pretreatment fluid is sent into mixing pit and is carried out in mixing pit, mixing 30min is stirred, stands 18min, be discharged, receive
Collect discharge liquor；
（3）Discharge liquor is sent into biotic division, after the flowing of biotic division, filtering carries out sterilizing, i.e., into sterilizing pond
Complete the processing to sanitary wastewater.
Processing material is prepared as rapeseed dregs, maize straw and ammonium hydrogen carbonate in mass ratio 6:8:2 are uniformly mixed, and crush,
5min is squeezed with 7MPa, and dry, pulverize at 80 DEG C, is sieved with 100 mesh sieve to get mixture.
Water outlet is arranged in cement pit bottom in the structure of pretreatment pool, and processing material, laying depth are laid in cement pit bottom
For 35cm, mixing hair, laying depth 15cm are laid on mixture, and be fixed using wire netting on mixing hair top,
It is built into processing pond.
It is by goose feather, drake feather and chicken feather in mass ratio 9 to mix hair:6:5 are uniformly mixed, and are put into 0.8mol/L hydrogen peroxide and soak
Bubble, is rinsed with water after taking-up, dry, and 5min is squeezed to get mixing hair with 1MPa.
Mixing pit is configured in mixing pit bottom laying mixture, laying depth 70cm.
The preparation method of mixture is by sodium humate, cobblestone, quartz sand and diatomite in mass ratio 1:9:5:3 carry out
Mixing is to get mixture.
Composite soil is added in the structure of biotic division in cement pit, and water is added into cement pit, and amount of water floods composite soil
20cm, and water inlet one end of biotic division forms slope with water outlet, the gradient is 20 °, then duckweed, reed are planted into pond, is gone forward side by side
Row breeding loach and catfish, composite soil are rural area soil, peat soil and Pond Silt in mass ratio 9:4:5 mix；Duckweed, reed
The planting density of reed is 6 every square；The cultivation density of loach and catfish be 6 every square.
A kind of processing method of sanitary wastewater, the processing method include the following steps：
（1）It after sanitary sewage is filtered, is sent into pretreatment pool and is pre-processed, flow down naturally, in preprocessing process,
It is 35 DEG C to keep the temperature of pretreatment pool, collects pretreatment fluid；
（2）Pretreatment fluid is sent into mixing pit and is carried out in mixing pit, mixing 30min is stirred, stands 20min, be discharged, receive
Collect discharge liquor；
（3）Discharge liquor is sent into biotic division, after the flowing of biotic division, filtering carries out sterilizing, i.e., into sterilizing pond
Complete the processing to sanitary wastewater.
Comparative example is handled it using commercially available treatment agent.
The embodiment used is carried out processing to sanitary wastewater and is handled sanitary wastewater using comparative example.Waste water is initial
COD is 280mg/L, ammonia nitrogen 64mg/L, laboratory reference《Integrated wastewater discharge standard》, test result is as shown in table 1.
Table 1：
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example |
| CODmg/L | 18.4 | 16.2 | 17.1 | 42.3~46.7 |
| BODmg/L | 5.68 | 4.88 | 5.54 | 21~23 |
| Ammonia nitrogen mg/L | 6.3 | 5.8 | 6.2 | 18~22 |
| Whether medicament residual is had | Nothing | Nothing | Nothing | Have |
In summary, sanitary wastewater processing method of the invention is more preferable to the treatment effect of waste water, and no medicament residual is worthy to be popularized.
Claims (8)
1. a kind of processing method of sanitary wastewater, which is characterized in that the processing method includes the following steps：
（1）It after sanitary sewage is filtered, is sent into pretreatment pool and is pre-processed, in preprocessing process, keep pre- place
The temperature for managing pond is 30~35 DEG C, collects pretreatment fluid；
（2）Pretreatment fluid is sent into mixing pit and is carried out in mixing pit, mixing is stirred, is stood, discharge liquor is collected in discharge；
（3）Discharge liquor is sent into biotic division, after the flowing of biotic division, filtering carries out sterilizing, i.e., into sterilizing pond
Complete the processing to sanitary wastewater.
2. the processing method of sanitary wastewater according to claim 1, which is characterized in that the step（1）Middle pretreatment pool is
Water outlet is set in cement pit bottom, is laid with processing material in cement pit bottom, laying depth is 30~35cm, on mixture upper berth
If mixing hair, laying depth is 10~15cm, and is fixed using wire netting on mixing hair top, that is, is built into processing pond.
3. the processing method of sanitary wastewater according to claim 2, which is characterized in that the processing material is by rapeseed dregs, jade
Rice stalk and ammonium hydrogen carbonate in mass ratio 4~6:8:2 are uniformly mixed, and crush, and squeeze, high temperature drying, crush, and sieving is to get mixed
Close material.
4. the processing method of sanitary wastewater according to claim 2, which is characterized in that the mixing hair is by goose feather, drake feather
And chicken feather in mass ratio 5~9:4~6:5 are uniformly mixed, and are put into hydrogen peroxide and impregnate, are rinsed with water after taking-up, dry, squeeze,
Up to mixing hair.
5. the processing method of sanitary wastewater according to claim 1, which is characterized in that the step（2）The structure of middle mixing pit
It builds to be laid with mixture in mixing pit bottom, laying depth is 50~70cm.
6. the processing method of sanitary wastewater according to claim 5, which is characterized in that the preparation method of the mixture is will
Sodium humate, cobblestone, quartz sand and diatomite in mass ratio 1:6~9:3~5:3 are mixed to get mixture.
7. the processing method of sanitary wastewater according to claim 1, which is characterized in that the structure of the biotic division is in cement pit
Middle addition composite soil, is added water into cement pit, and amount of water floods 10~20cm of composite soil, and water inlet one end of biotic division with go out
Water end (W.E.) forms slope, and the gradient is 15~20 °, then duckweed, reed are planted into pond, and carries out breeding loach and catfish.
8. the processing method of sanitary wastewater according to claim 5, which is characterized in that the composite soil is rural area soil, peat
Soil and Pond Silt in mass ratio 7~9:4:3~5 mix；Duckweed, reed planting density be 3~6 every square；
The cultivation density of loach and catfish be 3~6 every square.
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| CN201810568048.0A CN108658384A (en) | 2018-06-05 | 2018-06-05 | A kind of processing method of sanitary wastewater |
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| CN201810568048.0A CN108658384A (en) | 2018-06-05 | 2018-06-05 | A kind of processing method of sanitary wastewater |
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| CN108658384A true CN108658384A (en) | 2018-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109928574A (en) * | 2019-02-28 | 2019-06-25 | 江苏新亿源环保科技有限公司 | A kind of sanitary wastewater processing method |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109928574A (en) * | 2019-02-28 | 2019-06-25 | 江苏新亿源环保科技有限公司 | A kind of sanitary wastewater processing method |
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Application publication date: 20181016 |
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