CN110526369A - The processing method of city domestic sewage - Google Patents
The processing method of city domestic sewage Download PDFInfo
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- CN110526369A CN110526369A CN201910770896.4A CN201910770896A CN110526369A CN 110526369 A CN110526369 A CN 110526369A CN 201910770896 A CN201910770896 A CN 201910770896A CN 110526369 A CN110526369 A CN 110526369A
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- flocculant
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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
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to technical field of sewage, aiming at the problem that being easy to cause sewage to accumulate when repairing subsoil drain, a kind of processing method of city domestic sewage is provided, which, which includes: S1., extracts sewage from subsoil drain by the upstream end of block section；S2. sewage is discharged into settling tank and is precipitated, while spraying flocculant；S3. the superficial water by precipitating in settling tank is evacuated in the soil of the green plant by road；Flocculant includes the component of following mass fraction: 100 parts of polyacrylamide；15-20 parts of casein；33-36 parts of methylcellulose；3-5 parts of zinc oxide；5-8 parts of active carbon；Underwater ultraviolet lamp is equipped in the settling tank.By the way that sewage is extracted out and is emitted into the soil of the green plant by road after treatment, it is not easy to influence plant growth, it is further filtered by soil with plant, it is further purified so that sewage discharge after treatment is laggard into soil, sewage is not easily caused to accumulate, environment not easy to pollute, it is more friendly to environment.
Description
Technical field
The present invention relates to technical field of sewage, more particularly, to a kind of processing method of city domestic sewage.
Background technique
With urban development, city domestic sewage is more and more, needs by there is the urban sewage pipe network of planning by city
Domestic sewage collecting is simultaneously delivered to sewage disposal plant and is handled, to keep city to clean.
It the case where underground sewage pipe will appear corrosion leakage over time, is repaired, and in repairing
It needs temporary closure that need to repair section in the process, causes the sewage flowed in the sewage pipe of underground that can not temporarily be emitted into sewage treatment work
Factory is easy to cause sewage to accumulate, and influences environment, therefore there are also improve space.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of processing side of city domestic sewage
Method has the advantages that be not likely to produce sewage accumulation.
To achieve the above object, the present invention provides the following technical scheme that
A kind of processing method of city domestic sewage, comprising the following steps:
S1. sewage is extracted from subsoil drain by the upstream end of block section；
S2. sewage is discharged into settling tank and is precipitated, specific as follows:
Flocculant is sprayed while injecting sewage in settling tank；
S3. the superficial water by precipitating in settling tank is evacuated in the soil of the green plant by road；
The flocculant includes the component of following mass fraction:
100 parts of polyacrylamide；
15-20 parts of casein；
33-36 parts of methylcellulose；
3-5 parts of zinc oxide；
5-8 parts of active carbon；
Underwater ultraviolet lamp is equipped in the settling tank.
The present invention is further arranged to: the flocculant includes the component of following mass fraction:
100 parts of polyacrylamide；
16-18 parts of casein；
33-34 parts of methylcellulose；
3-4 parts of zinc oxide；
5-6 parts of active carbon.
By using above-mentioned technical proposal, by the soil for the green plant extracting sewage out and being emitted by road after treatment
In earth, so that sewage relative clean after treatment, is not easy to influence plant growth, is further filtered, made with plant by soil
Sewage discharge after treatment is laggard into soil is further purified, simultaneously because discharge in time, does not easily cause dirt
Water-water reactor product, environment not easy to pollute are more friendly to environment；
By the way that methylcellulose is added in flocculant, when so that sediment excessively needing to salvage, extremely by heating sewage
50-60 DEG C, that is, it may make methylcellulose that gel effect occurs, so that floccule gel-forming is blocky, so that being flocculated
The impurity of agent precipitating forms block-like gel, salvages very convenient when sediment, is less prone to floccule and twines stream and uses salvaging
Strainer on be difficult to the case where clearing up, be not easy to plug strainer, improve the efficiency for salvaging sediment, while after salvaging, lead to
Natural cooling is crossed, methylcellulose will melt again, so that sediment is easily discharged no longer with the presence of block-like gel to precipitating
At object collection；
By the way that casein is added, using casein in conjunction with metal ion, so that the effect of removal metal ions in sewage
Preferably；
By the way that zinc oxide is added, cooperates the underwater ultraviolet lamp in settling tank, kill having in sanitary sewage to a certain extent
Machine object reduces bacteria breed；
By be added active carbon, further increase the adsorption capacity of flocculant so that flocculant preferably adsorbing contaminant with
Precipitating, so that the effect of precipitation process is preferable.
The present invention is further arranged to: strainer, the edge and precipitating of the strainer are removably connected in the settling tank
Chamber interior wall abuts everywhere, and the water inlet of the settling tank is located at below strainer.
By using above-mentioned technical proposal, come sewage by strainer, so that is generated after being flocculated agent processing is cotton-shaped heavy
Starch is obstructed by strainer, so that the superficial water above strainer more cleans after liquid level rises and penetrates strainer, extracts surface layer
Water is not easy contaminated soil when being emitted into the soil of roadside plant.
The present invention is further arranged to: the flocculant further includes the component of following mass fraction:
3-5 parts of lotus leaf powder.
By using above-mentioned technical proposal, make the hydrophobicity of flocculant preferable by the way that lotus leaf powder is added, flocky precipitate
After discharge, it is easier to squeeze the water out to form filter cake, so that discharge sediment moisture is more convenient with operation when forming filter cake.
The present invention is further arranged to: the flocculant further includes the component of following mass fraction:
3-5 parts of ferrous sulfate.
By using above-mentioned technical proposal, by the way that ferrous sulfate is added, effectively in conjunction with the phosphorus in sanitary sewage, effectively go out
The phosphorus in sanitary sewage is removed, so that phosphorus content is less in treated superficial water, so that superficial water is emitted into the soil for planting green plant
When in earth, it is not easy contaminated soil.
The present invention is further arranged to: the flocculant further includes the component of following mass fraction:
3-5 parts of silane coupling agent.
By using above-mentioned technical proposal, by the way that silane coupling agent is added, so that flocculant is to organic matter and inorganic matter
There is preferable adsorption capacity, more effectively removes the sundries in sanitary sewage.
The present invention is further arranged to: the flocculant further includes the component of following mass fraction:
5-8 parts of quartz sand.
Increase the density of floccule, so that floccule is easier to by the way that quartz sand is added by using above-mentioned technical proposal
Precipitating improves the efficiency of processing sanitary sewage so that settling velocity is accelerated.
The present invention is further arranged to: the preparation method of the flocculant the following steps are included:
A. polyacrylamide, casein, methylcellulose, zinc oxide, active carbon are ground to partial size is 10-100nm's
Powder；
B. Polyacrylamide Powder, casein powder, methylcellulose powder, Zinc oxide powder, active carbon powder are stirred
It mixes and is formed uniformly pre-composition；
C. pre-composition is pressed into granular flocculant.
By using above-mentioned technical proposal, by by polyacrylamide, casein, methylcellulose, zinc oxide, active carbon
It is ground into after nanometer grade powder in stirring so that each raw material are uniformly dispersed, guarantees the quality of flocculant；By being pressed into particle
The flocculant of shape, so that flocculant is easy to carry, convenient for launching, operation, transport are more convenient.
In conclusion the invention has the following advantages:
1. being not easy to influence plant life by extracting out sewage and being emitted into the soil of the green plant by road after treatment
It is long, it is further filtered by soil with plant, is obtained further only so that sewage discharge after treatment is laggard into soil
Change, does not easily cause sewage to accumulate, environment not easy to pollute is more friendly to environment；
2. by heating sewage to 50-60 DEG C, that is, may make Methyl cellulose by the way that methylcellulose is added in flocculant
Gel effect occurs for element, salvages very convenient when sediment, while after salvaging, passes through natural cooling, methylcellulose
It will melt again, be easily discharged to sediment collection；
3. making the hydrophobicity of flocculant preferable by the way that lotus leaf powder is added, after flocky precipitate discharge, it is easier to expressed water
Divide to form filter cake, so that discharge sediment moisture is more convenient with operation when forming filter cake.
Detailed description of the invention
Fig. 1 is the flow diagram of the processing method of city domestic sewage in the present invention.
Specific embodiment
With reference to the accompanying drawings and embodiments, invention is further described in detail.
In following embodiment, polyacrylamide uses the polyacrylamide of Renqiu City Ke Wei Chemical Co., Ltd. sale.
In following embodiment, casein uses the casein of Henan Yan Kang food additives Co., Ltd sale.
In following embodiment, methylcellulose uses the methylcellulose of Shandong You Suo Chemical Industry Science Co., Ltd sale
MC。
In following embodiment, zinc oxide uses the zinc oxide of Shijiazhuang City Bai Sheng chemical industry Co., Ltd sale.
In following embodiment, active carbon uses the sewage treatment sold using the equal active carbon Co., Ltd in Guangdong with wooden
Powdery carbon.
In following embodiment, lotus leaf powder uses the lotus leaf powder of Xuzhou the Nature Food Co., Ltd sale.
In following embodiment, ferrous sulfate uses the ferrous sulfate of Hunan Yi De Chemical Co., Ltd. sale.
In following embodiment, silane coupling agent is solid using the W-6040 that Suzhou Pa Tena environmental friendly material Co., Ltd sells
Body silane coupling agent.
In following embodiment, quartz sand uses the quartz sand of the pure and fresh material for water treatment Co., Ltd sale in Gongyi City.
In following embodiment, embodiment 1
The preparation method of a kind of flocculant, flocculant includes the following steps
A. polyacrylamide, casein, methylcellulose, zinc oxide, active carbon are separately added into grinder and are ground to
The powder of 10-100nm；
B. Polyacrylamide Powder 100kg, casein powder 15kg, methylcellulose powder are added in a stirring kettle
33kg, Zinc oxide powder 3kg, active carbon powder 5kg are passed through nitrogen, and air is discharged, and revolving speed 75r/min stirs 5min, are formed
Pre-composition；
C. pre-composition is discharged into pelletizer and is pressed into granular flocculant.
Embodiment 2
The preparation method of a kind of flocculant, flocculant includes the following steps
A. polyacrylamide, casein, methylcellulose, zinc oxide, active carbon are separately added into grinder and are ground to
The powder of 10-100nm；
B. Polyacrylamide Powder 100kg, casein powder 16kg, methylcellulose powder are added in a stirring kettle
33.5kg, Zinc oxide powder 3.5kg, active carbon powder 5.5kg are passed through nitrogen, and air, revolving speed 75r/min, stirring is discharged
5min forms pre-composition；
C. pre-composition is discharged into pelletizer and is pressed into granular flocculant.
Embodiment 3
The preparation method of a kind of flocculant, flocculant includes the following steps
A. polyacrylamide, casein, methylcellulose, zinc oxide, active carbon are separately added into grinder and are ground to
The powder of 10-100nm；
B. Polyacrylamide Powder 100kg, casein powder 18kg, methylcellulose powder are added in a stirring kettle
34kg, Zinc oxide powder 4kg, active carbon powder 6kg are passed through nitrogen, and air is discharged, and revolving speed 75r/min stirs 5min, are formed
Pre-composition；
C. pre-composition is discharged into pelletizer and is pressed into granular flocculant.
Embodiment 4
The preparation method of a kind of flocculant, flocculant includes the following steps
A. polyacrylamide, casein, methylcellulose, zinc oxide, active carbon are separately added into grinder and are ground to
The powder of 10-100nm；
B. Polyacrylamide Powder 100kg, casein powder 20kg, methylcellulose powder are added in a stirring kettle
36kg, Zinc oxide powder 5kg, active carbon powder 8kg are passed through nitrogen, and air is discharged, and revolving speed 75r/min stirs 5min, are formed
Pre-composition；
C. pre-composition is discharged into pelletizer and is pressed into granular flocculant.
Embodiment 5
The preparation method of a kind of flocculant, flocculant includes the following steps
A. polyacrylamide, casein, methylcellulose, zinc oxide, active carbon are separately added into grinder and are ground to
The powder of 10-100nm；
B. Polyacrylamide Powder 100kg, casein powder 17kg, methylcellulose powder are added in a stirring kettle
33kg, Zinc oxide powder 3.8kg, active carbon powder 5.5kg are passed through nitrogen, and air is discharged, and revolving speed 75r/min stirs 5min,
Form pre-composition；
C. pre-composition is discharged into pelletizer and is pressed into granular flocculant.
Embodiment 6
The preparation method of a kind of flocculant, flocculant includes the following steps
A. polyacrylamide, casein, methylcellulose, zinc oxide, active carbon, lotus leaf powder, ferrous sulfate, silane is even
Connection agent, quartz sand are separately added into the powder that 10-100nm is ground in grinder；
B. Polyacrylamide Powder 100kg, casein powder 17kg, methylcellulose powder are added in a stirring kettle
33kg, Zinc oxide powder 3.8kg, active carbon powder 5.5kg, lotus leaf powder 3kg, ferrous sulfate powder 3kg, silane coupling agent powder
3kg, quartz sand powder 5kg are passed through nitrogen, and air is discharged, and revolving speed 75r/min stirs 5min, form pre-composition；
C. pre-composition is discharged into pelletizer and is pressed into granular flocculant.
Embodiment 7
The preparation method of a kind of flocculant, flocculant includes the following steps
A. polyacrylamide, casein, methylcellulose, zinc oxide, active carbon, lotus leaf powder, ferrous sulfate, silane is even
Connection agent, quartz sand are separately added into the powder that 10-100nm is ground in grinder；
B. Polyacrylamide Powder 100kg, casein powder 17kg, methylcellulose powder are added in a stirring kettle
33kg, Zinc oxide powder 3.8kg, active carbon powder 5.5kg, lotus leaf powder 4kg, ferrous sulfate powder 4kg, silane coupling agent powder
4kg, quartz sand powder 6kg are passed through nitrogen, and air is discharged, and revolving speed 75r/min stirs 5min, form pre-composition；
C. pre-composition is discharged into pelletizer and is pressed into granular flocculant.
Embodiment 8
The preparation method of a kind of flocculant, flocculant includes the following steps
A. polyacrylamide, casein, methylcellulose, zinc oxide, active carbon, lotus leaf powder, ferrous sulfate, silane is even
Connection agent, quartz sand are separately added into the powder that 10-100nm is ground in grinder；
B. Polyacrylamide Powder 100kg, casein powder 17kg, methylcellulose powder are added in a stirring kettle
33kg, Zinc oxide powder 3.8kg, active carbon powder 5.5kg, lotus leaf powder 5kg, ferrous sulfate powder 5kg, silane coupling agent powder
5kg, quartz sand powder 8kg are passed through nitrogen, and air is discharged, and revolving speed 75r/min stirs 5min, form pre-composition；
C. pre-composition is discharged into pelletizer and is pressed into granular flocculant.
Embodiment 9
The preparation method of a kind of flocculant, flocculant includes the following steps
A. polyacrylamide, casein, methylcellulose, zinc oxide, active carbon, lotus leaf powder, ferrous sulfate, silane is even
Connection agent, quartz sand are separately added into the powder that 10-100nm is ground in grinder；
B. Polyacrylamide Powder 100kg, casein powder 17kg, methylcellulose powder are added in a stirring kettle
33kg, Zinc oxide powder 3.8kg, active carbon powder 5.5kg, lotus leaf powder 3.5kg, ferrous sulfate powder 3.3kg, silane coupling agent
Powder 4.5kg, quartz sand powder 7.8kg are passed through nitrogen, and air is discharged, and revolving speed 75r/min stirs 5min, form pre-composition；
C. pre-composition is discharged into pelletizer and is pressed into granular flocculant.
Embodiment 10
A kind of processing method of city domestic sewage, referring to Fig.1, comprising the following specific steps
When S1. blocking subsoil drain to repair subsoil drain leakage, suction pump is placed to subsoil drain
Road is by the upstream position at closure, and suction pump is with by, at a distance of 1m, suction pump connects outlet pipe at closure, and outlet pipe is from nearest inspection
Well is looked into elevate above the soil.
S2. sewage is extracted out in the settling tank being placed near inspection shaft by water pump and is precipitated, according to injected water volume
With sewage: flocculant=10:1 ratio puts into flocculant；
Settling tank top opening, settling tank is interior to be removably connected with strainer by bolt, and strainer is horizontally disposed, outside strainer
Edge abuts everywhere with precipitating box inner wall, the center of strainer and settling tank depth direction, is provided with and is connected to out on settling tank side wall
The water inlet of water pipe, water inlet are located at below strainer, tangent with filter screen bottom at the top of water inlet, and precipitating chamber interior wall is fixedly connected with
Through the drug tube of strainer, strainer lower surface is fixedly connected with underwater ultraviolet lamp, and settling tank bottom is wound with heating wire.
Sewage is pumped into settling tank from water inlet by suction pump and is precipitated, while flocculant being put into from drug tube
Settling tank bottom, control suction pump draw water speed to be precipitated, while injecting sewage to precipitate, open underwater ultraviolet lamp and match
The zinc oxide closed in flocculant makes the protein denaturization in sewage, kills organic matter, reduces bacteria breed.
Settling tank volume is 1m in the present embodiment3, suction pump draw water speed control be 0.25m3/h。
S3. the superficial water above strainer is aspirated by water supply pump and be emitted into the soil of the green plant by road, other realities
It applies also be emitted into irrigator in example and other green plants is irrigated.
Flocculant uses the flocculant of embodiment 9 in the present embodiment, and the wadding of embodiment 1-8 also can be used in other embodiments
Solidifying agent.
When the precipitate bulk thickness in settling tank reaches the 25% of settling tank depth, start electric-heating-wire-heating, so that
Sewage in settling tank is heated to 60 DEG C, so that gel reaction occurs for the methylcellulose in flocculant, shape is jellied solidifying
Glue dismantles strainer so that a large amount of floccules agglomerate into bulk, salvages block-like gel precipitate by fishing net, salvages dry
After net, strainer is installed again, continues with sewage；
It is not easy to plug by salvaging block-like gel precipitate so that floccule is not easy to hang in the mesh of fishing net, easily
In cleaning, so that fishing is more convenient.
Comparative example 1
The preparation method of a kind of flocculant, flocculant includes the following steps
A. by polyacrylamide, casein, methylcellulose, zinc oxide, lotus leaf powder, ferrous sulfate, silane coupling agent, stone
Sand is separately added into the powder that 10-100nm is ground in grinder；
B. Polyacrylamide Powder 100kg, casein powder 17kg, methylcellulose powder are added in a stirring kettle
33kg, Zinc oxide powder 3.8kg, lotus leaf powder 3.5kg, ferrous sulfate powder 3.3kg, silane coupling agent powder 4.5kg, quartz sand
Powder 7.8kg is passed through nitrogen, and air is discharged, and revolving speed 75r/min stirs 5min, forms pre-composition；
C. pre-composition is discharged into pelletizer and is pressed into granular flocculant.
Comparative example 2
The preparation method of a kind of flocculant, flocculant includes the following steps
A. by polyacrylamide, casein, zinc oxide, active carbon, lotus leaf powder, ferrous sulfate, silane coupling agent, quartz sand
It is separately added into the powder that 10-100nm is ground in grinder；
B. Polyacrylamide Powder 100kg, casein powder 17kg, Zinc oxide powder 3.8kg, work are added in a stirring kettle
Property carbon powder 5.5kg, lotus leaf powder 3.5kg, ferrous sulfate powder 3.3kg, silane coupling agent powder 4.5kg, quartz sand powder
7.8kg is passed through nitrogen, and air is discharged, and revolving speed 75r/min stirs 5min, forms pre-composition；
C. pre-composition is discharged into pelletizer and is pressed into granular flocculant.
Comparative example 3
The preparation method of a kind of flocculant, flocculant includes the following steps
A. by polyacrylamide, methylcellulose, zinc oxide, active carbon, lotus leaf powder, ferrous sulfate, silane coupling agent, stone
Sand is separately added into the powder that 10-100nm is ground in grinder；
B. Polyacrylamide Powder 100kg, methylcellulose powder 33kg, Zinc oxide powder are added in a stirring kettle
3.8kg, active carbon powder 5.5kg, lotus leaf powder 3.5kg, ferrous sulfate powder 3.3kg, silane coupling agent powder 4.5kg, quartz
Emery dust end 7.8kg is passed through nitrogen, and air is discharged, and revolving speed 75r/min stirs 5min, forms pre-composition；
C. pre-composition is discharged into pelletizer and is pressed into granular flocculant.
Experiment 1
The suspension in the sewage before flocculant is added is detected according to GB11901-89 " the measurement gravimetric method of water quality suspended matter "
Object content a (mg/L), then the purified processed dirt of flocculant of embodiment 1-9 and comparative example 1-3 is added in detection respectively
Suspension content b (mg/L) in water calculates the removal rate (%) of suspended matter according to (a-b/a) * 100%.
Experiment 2
Flocculant using atomic absorption spectrography (AAS) detection embodiment 1-9 and comparative example 1-3 is purified processed
Copper ions in sewage, zinc ion, manganese ion, chromium ion content.
Specific detection data is shown in Table 1
Table 1
It can be obtained according to table 1, active carbon, which is added, can effectively improve flocculant to the adsorption capacity of the impurity in sewage, so that suspending
Object removal rate is improved；
Casein, methylcellulose is added to have no significant effect the effect of flocculant absorption suspended matter；
The effective adsorbing metal ions of casein, the metal ion in limited removal sewage, so that sewage is not easy to pollute is added
Soil.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of processing method of city domestic sewage, it is characterized in that: the following steps are included:
S1. sewage is extracted from subsoil drain by the upstream end of block section；
S2. sewage is discharged into settling tank and is precipitated, specific as follows:
Flocculant is sprayed while injecting sewage in settling tank；
S3. the superficial water by precipitating in settling tank is evacuated in the soil of the green plant by road；
The flocculant includes the component of following mass fraction:
100 parts of polyacrylamide；
15-20 parts of casein；
33-36 parts of methylcellulose；
3-5 parts of zinc oxide；
5-8 parts of active carbon；
Underwater ultraviolet lamp is equipped in the settling tank.
2. the processing method of city domestic sewage according to claim 1, it is characterized in that: the flocculant includes following matter
Measure the component of number:
100 parts of polyacrylamide；
16-18 parts of casein；
33-34 parts of methylcellulose；
3-4 parts of zinc oxide；
5-6 parts of active carbon.
3. the processing method of city domestic sewage according to claim 1, it is characterized in that: detachably connecting in the settling tank
It is connected to strainer, the edge of the strainer abuts everywhere with precipitating chamber interior wall, and the water inlet of the settling tank is located at below strainer.
4. the processing method of city domestic sewage according to claim 2, it is characterized in that: the flocculant further includes following
The component of mass fraction:
3-5 parts of lotus leaf powder.
5. the processing method of city domestic sewage according to claim 2, it is characterized in that: the flocculant further includes following
The component of mass fraction:
3-5 parts of ferrous sulfate.
6. the processing method of city domestic sewage according to claim 2, it is characterized in that: the flocculant further includes following
The component of mass fraction:
3-5 parts of silane coupling agent.
7. the processing method of city domestic sewage according to claim 2, it is characterized in that: the flocculant further includes following
The component of mass fraction:
5-8 parts of quartz sand.
8. the processing method of city domestic sewage according to claim 2, it is characterized in that: the preparation method of the flocculant
The following steps are included:
A. polyacrylamide, casein, methylcellulose, zinc oxide, active carbon are ground to the powder that partial size is 10-100nm；
B. Polyacrylamide Powder, casein powder, methylcellulose powder, Zinc oxide powder, active carbon powder are stirred equal
Even formation pre-composition；
C. pre-composition is pressed into granular flocculant.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186963A (en) * | 2020-01-20 | 2020-05-22 | 广州市汇鹏建设有限公司 | Rural domestic sewage classification treatment method |
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Application publication date: 20191203 |