CN109293082A - One boar use in waste water treatment equipment for separating liquid from solid and separation method - Google Patents
One boar use in waste water treatment equipment for separating liquid from solid and separation method Download PDFInfo
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- CN109293082A CN109293082A CN201811462547.8A CN201811462547A CN109293082A CN 109293082 A CN109293082 A CN 109293082A CN 201811462547 A CN201811462547 A CN 201811462547A CN 109293082 A CN109293082 A CN 109293082A
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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
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- 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
-
- 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
Abstract
The invention discloses a boar use in waste water treatment equipment for separating liquid from solid and separation methods, the one boar use in waste water treatment equipment for separating liquid from solid includes being separated by solid-liquid separation room and the heavy metal adsorption room with agitating device, and the outlet of heavy metal adsorption room is with the entrance of separation of solid and liquid room by connecting with valvular communicating pipe；It is placed in the heavy metal adsorption room for swimming in the stalk in heavy metal adsorption room on liquid level, is coated with one layer of heavy metal absorbent on stalk；The separation of solid and liquid is indoor to be successively arranged primary filter cartridge, medical fluid process chamber and secondary filtration cylinder from top to bottom, is placed with flocculant in the medical fluid process chamber, has the advantages that reduce the content of beary metal in the solid isolated.
Description
Technical field
The present invention relates to a boar use in waste water treatment equipment for separating liquid from solid and separation methods.
Background technique
Due to the development of livestock and poultry breeding industry in recent years, intensive, scale animal and poultry cultivation industry emerges rapidly, supports livestock and poultry
Growing pollution becomes the problem of can not be ignored.Although the intensive livestock and poultry breeding industry in China is started late, development is swift and violent, very short time
Considerable scale is had reached, and is in high speed development trend, a large amount of fecalurias and waste water of livestock and poultry farm discharge have become many cities
With the emerging pollution sources in rural area.Especially Large-scale pig farm, since wastewater discharge is big, organic matter concentration is high, nitrogen content is high
The features such as, if cannot be effectively treated, China's urban environment, drinking water source, Agro-ecology can be generated and directly threaten and endanger
Evil.Piggery wastewater is largely studied both at home and abroad, exploiting economy, efficient Summarization for Piggery Wastewater Treatment Technology are to study at present
Hot spot.
Piggery wastewater contains a large amount of solid suspension, it is one of main source of COD, generally passes through the objects such as grid
It manages isolated means to be separated by solid-liquid separation, organic fertilizer can be sold or be produced to the argol isolated.The study found that in wastewater treatment mistake
Cheng Zhong, after the heavy metal processing in waste water, content of beary metal decline in waste water, but still containing comparable in the solid isolated
Heavy metal is unfavorable for the secondary use of solid isolated.
Summary of the invention
The first object of the present invention is to provide a boar use in waste water treatment equipment for separating liquid from solid, consolidates with what reduction was isolated
The advantages of content of beary metal in body.
Above-mentioned technical purpose of the invention has the technical scheme that
One boar use in waste water treatment equipment for separating liquid from solid, the heavy metal adsorption room including being separated by solid-liquid separation room and with agitating device,
The outlet of heavy metal adsorption room is with the entrance of separation of solid and liquid room by connecting with valvular communicating pipe；The heavy metal adsorption room
It is inside placed with for swimming in the stalk in heavy metal adsorption room on liquid level, is coated with one layer of heavy metal absorbent on stalk；Institute
It states separation of solid and liquid interior and is successively arranged primary filter cartridge, medical fluid process chamber and secondary filtration cylinder, the medical fluid processing from top to bottom
Interior is placed with flocculant.
The second object of the present invention is to provide a boar use in waste water treatment solid-liquid separating method.
One boar use in waste water treatment solid-liquid separating method, comprising the following steps:
(1) waste water is flowed by the road in heavy metal adsorption room, under agitation, waste water and the straw coated with heavy metal absorbent
Stalk haptoreaction；Stop stirring and removing after standing the stalk for swimming on liquid level or floating on a liquid, opens heavy metal
Valve on adsorption chamber and the communicating pipe being separated by solid-liquid separation between room, by treated, waste water is introduced in primary filter cartridge；
(2) waste water is separated by solid-liquid separation for the first time in primary filter cartridge, and a small amount of liquid and fraction solids are trapped in primary filter cartridge
Interior, big quantity of fluid and fraction solids enter in medical fluid process chamber；It is connect into the indoor solidliquid mixture of medical fluid processing and flocculant
Touching reaction, solid sedimentation increase, and solidliquid mixture carries out secondary separation of solid and liquid after entering secondary filtration cylinder.
Further preferably are as follows: when wastewater treatment, the mass ratio of waste water and heavy metal absorbent to be processed be 100:0.1 ~
0.2；Stalk coated with heavy metal absorbent the preparation method comprises the following steps: by heavy metal absorbent, calcium carbonate, triethylamine, poly- methyl
Hydroxy-ethyl acrylate, naphthenic oil, second alcohol and water are that 1:2 ~ 3:0.5 ~ 0.6:1.5 ~ 2.0:2 ~ 3:8 ~ 10:20 ~ 25 are mixed in mass ratio
Close, obtain lotion, by lotion applicator on being dried and cut into rod-shaped stalk, drying to get；The heavy metal absorbent is selected
EDETATE SODIUM.
By adopting the above technical scheme, binding force of the lotion on stalk is strong, in water not easy disintegrating, is conducive to heavy metal suction
Attached processing；Simultaneously triethylamine, poly hydroxy ethyl acrylate and naphthenic oil integrated environment be conducive to increase heavy metal ion and
The binding force between heavy metal precipitation object and stalk that heavy metal absorbent reaction generates is larger, can reduce a huge sum of money in treatment process
A possibility that belonging to sediment sedimentation.
Further preferably are as follows: when wastewater treatment, the mass ratio of waste water and flocculant to be processed is 100:0.1 ~ 0.2；It is described
Flocculant selects activated alumina, cyclodextrin, citric acid and sodium chloride, activated alumina, cyclodextrin, citric acid and sodium chloride
Mass ratio is 1:0.1 ~ 0.2:0.04 ~ 0.05:0.01 ~ 0.02.
Further preferably are as follows: by treated step (1) and (2) waste water passes sequentially through Anaerobic Treatment, Aerobic Process for Treatment and
Biological contact oxidation process is handled；
When Anaerobic Treatment, temperature control is at 25 ~ 30 DEG C, and 6.8 ~ 7.1, dissolved oxygen is controlled in 0.08 ~ 0.20mg/l for pH control,
In 4 ~ 5g/l, the particle for launching the anaerobe and basin's effective volume 20 ~ 25% that have basin's effective volume 0.5 ~ 0.6% is dirty for MLVSS control
Mud；
When Aerobic Process for Treatment, temperature control is at 25 ~ 30 DEG C, and 6.8 ~ 7.1, dissolved oxygen control is controlled in 4 ~ 5mg/l, MLVSS for pH control
System launches the sludge of the aerobic microbiological, basin's effective volume 28 ~ 30% that have basin's effective volume 0.5 ~ 0.6% in 4 ~ 5g/l；
When biological contact oxidation process processing, temperature control at 25 ~ 30 DEG C, pH control 6.8 ~ 7.1, dissolved oxygen control 8 ~
10mg/l。
In conclusion the invention has the following advantages: using be coated with heavy metal absorbent stalk to waste water into
Row is handled, and the heavy metal ion and heavy metal absorbent reaction in waste water generate heavy metal precipitation object, which is attracted to
On the stalk of large specific surface area, and the binding force is larger under the adherency of triethylamine, poly hydroxy ethyl acrylate and naphthenic oil, can
A possibility that reducing the sedimentation of heavy metal precipitation object, therefore heavy metal precipitation object swims on liquid level or is suspended in liquid level with stalk
In, when removing stalk, heavy metal precipitation object removes therewith, therefore content of beary metal is few in solidliquid mixture, reduces solid-liquid
Content of beary metal in isolated liquid and solid, the dry matter isolated can be made into the organic composite of heavy metal free pollution
Fertilizer；
The liquid isolated utilizes itself and the Electrostatic Absorption in liquid between gel, lotion, chemical bond by flocculant process
Adelphotaxy further settles the molecule in liquid, declines TSS, COD of the liquid isolated obvious, can subtract
The load of light post-processing；It is combined, is further decreased in waste water using Anaerobic Treatment, Aerobic Process for Treatment and catalytic oxidation in the later period
COD, ammonia nitrogen and total nitrogen.
Specific embodiment
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the protection scope of invention.
1: one boar use in waste water treatment equipment for separating liquid from solid of embodiment, including being separated by solid-liquid separation room and with the weight of agitating device
Metal adsorption room, the outlet of heavy metal adsorption room is with the entrance of separation of solid and liquid room by connecting with valvular communicating pipe.Solid-liquid
Primary filter cartridge, medical fluid process chamber and secondary filtration cylinder are successively arranged in separation chamber from top to bottom.
One boar use in waste water treatment solid-liquid separating method, comprising the following steps:
(1) waste water is flowed by the road in heavy metal adsorption room, under agitation, waste water and the straw coated with heavy metal absorbent
Stalk haptoreaction；Stop stirring and removing after standing the stalk for swimming on liquid level or floating on a liquid, opens heavy metal
Valve on adsorption chamber and the communicating pipe being separated by solid-liquid separation between room, by treated, waste water is introduced in primary filter cartridge；
When wastewater treatment, the mass ratio of waste water and heavy metal absorbent to be processed is 100:0.1；Coated with heavy metal absorbent
Stalk the preparation method comprises the following steps: by heavy metal absorbent, calcium carbonate, triethylamine, poly hydroxy ethyl acrylate, naphthenic oil, ethyl alcohol
In mass ratio it is 1:2:0.5:1.5:2:8:20 mixing with water, obtains lotion, lotion applicator is being dried and cut into rod-shaped straw
On stalk, drying to get；Heavy metal absorbent selects EDETATE SODIUM；
(2) waste water is separated by solid-liquid separation for the first time in primary filter cartridge, and a small amount of liquid and fraction solids are trapped in primary filter cartridge
Interior, big quantity of fluid and fraction solids enter in medical fluid process chamber；It is connect into the indoor solidliquid mixture of medical fluid processing and flocculant
Touching reaction, solid sedimentation increase, and solidliquid mixture carries out secondary separation of solid and liquid after entering secondary filtration cylinder；
When wastewater treatment, the mass ratio of waste water and flocculant to be processed is 100:0.1；Flocculant selects activated alumina, ring paste
Essence, citric acid and sodium chloride, activated alumina, cyclodextrin, citric acid and sodium chloride mass ratio be 1:0.1:0.04:0.01；
(3) by the way that treated step (1) and (2), waste water passes sequentially through Anaerobic Treatment, Aerobic Process for Treatment and biological contact oxidation process
It is handled；
When Anaerobic Treatment, temperature control is at 25 DEG C, and 6.8, dissolved oxygen control is controlled in 0.08mg/l, MLVSS in 4g/ for pH control
L launches the granule sludge of the anaerobe and basin's effective volume 20% that have basin's effective volume 0.5%；When Aerobic Process for Treatment, temperature control exists
25 DEG C, 6.8, dissolved oxygen control has the aerobic micro- of basin's effective volume 0.5% in 4g/l, dispensing in 4mg/l, MLVSS control for pH control
The sludge of biology, basin's effective volume 28%；When biological contact oxidation process processing, temperature control is at 25 DEG C, and pH control is 6.8, dissolved oxygen
Control is in 8mg/l.
2: one boar use in waste water treatment equipment for separating liquid from solid of embodiment, including being separated by solid-liquid separation room and with the weight of agitating device
Metal adsorption room, the outlet of heavy metal adsorption room is with the entrance of separation of solid and liquid room by connecting with valvular communicating pipe.Solid-liquid
Primary filter cartridge, medical fluid process chamber and secondary filtration cylinder are successively arranged in separation chamber from top to bottom.
One boar use in waste water treatment solid-liquid separating method, comprising the following steps:
(1) waste water is flowed by the road in heavy metal adsorption room, under agitation, waste water and the straw coated with heavy metal absorbent
Stalk haptoreaction；Stop stirring and removing after standing the stalk for swimming on liquid level or floating on a liquid, opens heavy metal
Valve on adsorption chamber and the communicating pipe being separated by solid-liquid separation between room, by treated, waste water is introduced in primary filter cartridge；
When wastewater treatment, the mass ratio of waste water and heavy metal absorbent to be processed is 100:0.2；Coated with heavy metal absorbent
Stalk the preparation method comprises the following steps: by heavy metal absorbent, calcium carbonate, triethylamine, poly hydroxy ethyl acrylate, naphthenic oil, ethyl alcohol
In mass ratio it is 1:3:0.6:2.0:3:10:25 mixing with water, obtains lotion, lotion applicator is being dried and cut into rod-shaped straw
On stalk, drying to get；Heavy metal absorbent selects EDETATE SODIUM；
(2) waste water is separated by solid-liquid separation for the first time in primary filter cartridge, and a small amount of liquid and fraction solids are trapped in primary filter cartridge
Interior, big quantity of fluid and fraction solids enter in medical fluid process chamber；It is connect into the indoor solidliquid mixture of medical fluid processing and flocculant
Touching reaction, solid sedimentation increase, and solidliquid mixture carries out secondary separation of solid and liquid after entering secondary filtration cylinder；
When wastewater treatment, the mass ratio of waste water and flocculant to be processed is 100:0.2；Flocculant selects activated alumina, ring paste
Essence, citric acid and sodium chloride, activated alumina, cyclodextrin, citric acid and sodium chloride mass ratio be 1:0.2:0.05:0.02；
(3) by the way that treated step (1) and (2), waste water passes sequentially through Anaerobic Treatment, Aerobic Process for Treatment and biological contact oxidation process
It is handled；
When Anaerobic Treatment, temperature control is at 30 DEG C, and 7.1, dissolved oxygen control is controlled in 0.20mg/l, MLVSS in 5g/ for pH control
L launches the granule sludge of the anaerobe and basin's effective volume 25% that have basin's effective volume 0.6%；
When Aerobic Process for Treatment, temperature control is at 30 DEG C, and 7.1, dissolved oxygen control is controlled in 5mg/l, MLVSS in 5g/l for pH control,
Launch the sludge of the aerobic microbiological, basin's effective volume 30% that have basin's effective volume 0.6%；
When biological contact oxidation process processing, temperature control is at 30 DEG C, and 7.1, dissolved oxygen is controlled in 10mg/l for pH control.
1: one boar use in waste water treatment solid-liquid separating method of comparative example, difference from example 1 is that, step
(1) in, the mixture replacing of stalk heavy metal absorbent and stalk coated with heavy metal absorbent: when wastewater treatment, weight
Metal absorbent is dissolved in waste water, and stalk is swum on the water surface.
2: one boar use in waste water treatment solid-liquid separating method of comparative example, difference from example 1 is that, step
(1) in, the stalk coated with heavy metal absorbent the preparation method comprises the following steps: heavy metal absorbent and water are mixed in mass ratio for 1:20
Close, obtain lotion, by lotion applicator on being dried and cut into rod-shaped stalk, drying to get.
3: one boar use in waste water treatment solid-liquid separating method of comparative example, difference from example 1 is that, step
(2) in, flocculant selects activated alumina.
4: one boar use in waste water treatment solid-liquid separating method of comparative example, difference from example 1 is that, step
(2) in, flocculant selects cyclodextrin.
5: one boar use in waste water treatment solid-liquid separating method of comparative example, difference from example 1 is that, step
(2) in, flocculant selects activated alumina and cyclodextrin, and the mass ratio of activated alumina and cyclodextrin is 1:0.1.
Performance test
With the raw wastewater of same batch (raw water CODcr3200mg/L, ammonia nitrogen 170mg/L, total nitrogen 300mg/L, total cadmium 1.252mg/L,
Total arsenic 12.31mg/L, total lead 5.9mg/L) it is waste water to be processed, the method for embodiment 1-2 and comparative example 1-2 is pressed respectively
Handled (test is with 1 ton of waste water for process object every time), the CODcr of the waste water before and after test processes, ammonia nitrogen, total nitrogen and
Total cadmium, total arsenic and total lead in the solid (in terms of dry weight) that first solid-liquid and secondary separation of solid and liquid obtain in step (2) respectively.
With raw wastewater (raw water CODcr3200mg/L, ammonia nitrogen 170mg/L, total nitrogen 300mg/L, the total cadmium of same batch
1.252mg/L, total arsenic 12.31mg/L, total lead 5.9mg/L) be waste water to be processed, respectively by comparative example 3-5 method into
Row processing (is tested every time with 1 ton of waste water as process object), CODcr, ammonia nitrogen, the total nitrogen of the waste water before and after test processes.
It parallel test 5 times, is averaged.Test result is as shown in Table 1 and Table 2.
Table 1 is shown: after embodiment 1-2 or comparative example 1-5 processing, CODcr, ammonia nitrogen and total nitrogen in waste water have
It is decreased obviously, the removal rate of CODCr, ammonia nitrogen and total nitrogen are not less than 98%, 94% and 93% respectively, are superior to discharge standard；Wherein
The removal rate of CODCr, ammonia nitrogen and total nitrogen through embodiment 1-2 treated waste water are not less than 99%, 97% and 98% respectively, are
Most preferred embodiment.
Table 2 is shown: after embodiment 1-2 or comparative example 1-2 processing, total cadmium, total arsenic and total lead in waste water have
The removal rate for being decreased obviously total cadmium, total arsenic and total lead is above 99%, is superior to discharge standard；Implement through embodiment 1-2 or comparison
Total cadmium, total arsenic and total lead content are lower in the solid obtained after example 1-2 processing, can reduce the safety issue of following process,
Total cadmium, total arsenic and total lead content can ignore substantially in the middle solid handled through embodiment 1-2.
Table 1CODcr, ammonia nitrogen, total nitrogen test
The total cadmium of table 2, total arsenic and the test of total lead
The specific implementation of the invention is not to be limited to these illustrations for the above content, for the technical field of the invention
For those of ordinary skill, without departing from the inventive concept of the premise, a number of simple deductions or replacements can also be made, all answers
When being considered as belonging to present invention scope of patent protection determined by the appended claims.
Claims (5)
1. a boar use in waste water treatment equipment for separating liquid from solid, which is characterized in that including being separated by solid-liquid separation room and with agitating device
Heavy metal adsorption room, the outlet of heavy metal adsorption room is with the entrance of separation of solid and liquid room by connecting with valvular communicating pipe；Institute
It states and is placed in heavy metal adsorption room for swimming in the stalk in heavy metal adsorption room on liquid level, be coated with one layer of weight on stalk
Metal absorbent；The separation of solid and liquid is indoor to be successively arranged primary filter cartridge, medical fluid process chamber and secondary filtration cylinder from top to bottom,
Flocculant is placed in the medical fluid process chamber.
2. a boar use in waste water treatment solid-liquid separating method, which comprises the following steps:
(1) waste water is flowed by the road in heavy metal adsorption room, under agitation, waste water and the straw coated with heavy metal absorbent
Stalk haptoreaction；Stop stirring and removing after standing the stalk for swimming on liquid level or floating on a liquid, opens heavy metal
Valve on adsorption chamber and the communicating pipe being separated by solid-liquid separation between room, by treated, waste water is introduced in primary filter cartridge；
(2) waste water is separated by solid-liquid separation for the first time in primary filter cartridge, and a small amount of liquid and fraction solids are trapped in primary filter cartridge
Interior, big quantity of fluid and fraction solids enter in medical fluid process chamber；It is connect into the indoor solidliquid mixture of medical fluid processing and flocculant
Touching reaction, solid sedimentation increase, and solidliquid mixture carries out secondary separation of solid and liquid after entering secondary filtration cylinder.
3. boar use in waste water treatment solid-liquid separating method according to claim 2, which is characterized in that when wastewater treatment,
The mass ratio of waste water and heavy metal absorbent to be processed is 100:0.1 ~ 0.2；The preparation of stalk coated with heavy metal absorbent
Method are as follows: heavy metal absorbent, calcium carbonate, triethylamine, poly hydroxy ethyl acrylate, naphthenic oil, second alcohol and water are pressed into quality
Than being mixed for 1:2 ~ 3:0.5 ~ 0.6:1.5 ~ 2.0:2 ~ 3:8 ~ 10:20 ~ 25, lotion is obtained, lotion applicator is being dried and cut into
On rod-shaped stalk, drying to get；The heavy metal absorbent selects EDETATE SODIUM.
4. boar use in waste water treatment solid-liquid separating method according to claim 3, which is characterized in that when wastewater treatment,
The mass ratio of waste water and flocculant to be processed is 100:0.1 ~ 0.2；The flocculant selects activated alumina, cyclodextrin, lemon
Acid and sodium chloride, activated alumina, cyclodextrin, citric acid and sodium chloride mass ratio be 1:0.1 ~ 0.2:0.04 ~ 0.05:0.01
~0.02。
5. boar use in waste water treatment solid-liquid separating method according to claim 4, which is characterized in that pass through step (1)
(2) treated, and waste water passes sequentially through Anaerobic Treatment, Aerobic Process for Treatment and biological contact oxidation process is handled；
When Anaerobic Treatment, temperature control is at 25 ~ 30 DEG C, and 6.8 ~ 7.1, dissolved oxygen is controlled in 0.08 ~ 0.20mg/l for pH control,
In 4 ~ 5g/l, the particle for launching the anaerobe and basin's effective volume 20 ~ 25% that have basin's effective volume 0.5 ~ 0.6% is dirty for MLVSS control
Mud；
When Aerobic Process for Treatment, temperature control is at 25 ~ 30 DEG C, and 6.8 ~ 7.1, dissolved oxygen control is controlled in 4 ~ 5mg/l, MLVSS for pH control
System launches the sludge of the aerobic microbiological, basin's effective volume 28 ~ 30% that have basin's effective volume 0.5 ~ 0.6% in 4 ~ 5g/l；
When biological contact oxidation process processing, temperature control at 25 ~ 30 DEG C, pH control 6.8 ~ 7.1, dissolved oxygen control 8 ~
10mg/l。
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| CN112225361A (en) * | 2020-09-24 | 2021-01-15 | 北京金崇光药业有限公司 | Purified water for cleaning pseudo-ginseng powder and production process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112225361A (en) * | 2020-09-24 | 2021-01-15 | 北京金崇光药业有限公司 | Purified water for cleaning pseudo-ginseng powder and production process thereof |
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