CN110759586A - Sewage post-stage biochemical process - Google Patents
Sewage post-stage biochemical process Download PDFInfo
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- CN110759586A CN110759586A CN201910965775.5A CN201910965775A CN110759586A CN 110759586 A CN110759586 A CN 110759586A CN 201910965775 A CN201910965775 A CN 201910965775A CN 110759586 A CN110759586 A CN 110759586A
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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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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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
- 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
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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
- C02F7/00—Aeration of stretches of water
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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)
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- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a sewage post-stage biochemical process, which comprises the following steps of; conveying sewage to a comprehensive regulating tank, and regulating the water quantity and the water quality of the sewage by using the regulating tank to obtain sewage A; pretreating the sewage through a grid to obtain sewage B; step three, conveying the sewage B into a class A tank to obtain sewage C; step four, conveying the sewage C into a B-level pool to obtain clear water A; fifthly, conveying the clear water A to a decoloring oxidation tank for decoloring and sterilizing to obtain clear water B; step six, filtering the mixture by using activated carbon to obtain clear water C for recycling; and step seven, recycling the clean water C after RO treatment. The invention improves the ecological environment of medical washing enterprises, reduces the need of clean water resources, relieves the water supply pressure and has obvious economic and social benefits.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage post-stage biochemical process.
Background
In recent years, with the development of population and economy, environmental problems become more serious, and the government and the vast people in China pay high attention. The problem of water pollution is a key problem in a plurality of environmental problems, and the water pollution causes soil pollution, air pollution and damage to the overall ecological environment. The main sources of water pollution are domestic sewage and industrial sewage, wherein the industrial sewage takes the first place, and the coal chemical industry wastewater is one of key industrial wastewater taking coal as a basic raw material and is harmful to human bodies and the environment;
in the traditional process, the water quality of the discharged sewage after entering the grid, the grit chamber, the anaerobic chamber, the aerobic chamber and the sedimentation chamber is often not up to the standard, the sludge yield is increased, the water yield is low, and the cost of treated water is increased; how to solve the water use problem becomes the first problem of many big cities, the sewage recycling technology can supply urban water according to the quality according to the needs, and the standard of the water quality is adapted to the use of the water; the water resource is fully utilized, and the urban water supply pressure can be relieved.
Disclosure of Invention
The invention aims to provide a sewage post-stage biochemical process to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a sewage post-stage biochemical process comprises the following steps;
step one, conveying the sewage A to a comprehensive regulating reservoir, and regulating the water quantity and the water quality of the sewage through the regulating reservoir to obtain sewage B in order to avoid the suspended matters from precipitating in the regulating reservoir and continuously stirring;
pretreating the sewage B through a grid, adopting mechanical hair removal equipment and a stainless steel frame, and enabling the grid pitch to be 1-2mm, so as to realize preliminary solid-liquid separation, reduce the content of inorganic particulate matters, improve the biodegradability of the sewage and obtain sewage C;
step three, conveying the sewage C into a class A tank, performing hydrolytic acidification treatment in the class A tank, and stirring the class A tank by adopting stirring equipment to fully mix the sewage and perform hydrolysis reaction to obtain sewage D;
conveying the sewage D into a B-stage tank, performing aerobic and membrane separation treatment in the B-stage tank, and aerating the B-stage tank by adopting a rotary fan to provide oxygen to promote reaction to obtain clear water A;
fifthly, conveying the clear water A to a decoloring oxidation tank for decoloring and sterilizing to obtain clear water B;
lifting the obtained clear water B to active carbon for filtering to obtain clear water C;
and step seven, conveying the clean water C to an RO filter for filtering treatment to obtain clean water D for recycling.
Preferably, the treatment system comprises a regulating tank, a grating hair removing device, a treatment tank I and a treatment tank II, and comprises the following steps:
and S1, conveying the sewage to a regulating tank through a drainage pipeline to regulate the water quality.
S2, conveying the sewage to a grating hair removing device to remove more than 99% of suspended matters;
s3, the sewage enters a treatment tank I, and the sewage is subjected to hydrolytic acidification treatment;
and S4, enabling the sewage to enter a treatment tank II, carrying out biochemical treatment on the sewage, and carrying out solid-liquid separation to obtain clear water.
Preferably, the treatment system comprises a decolorization tank and an ozone tank, and comprises the following steps:
s1, conveying the clear water to a decoloring tank for advanced oxidation and decoloring;
and S2, feeding the clean water into an ozone tank for deep oxidation and decoloration treatment.
Preferably, the treatment system comprises an activated carbon treatment device and an RO device, and comprises the following steps:
s1, conveying the decolored and oxidized clear water to activated carbon filtering equipment for reduction treatment;
and S2, allowing the clean water treated by the activated carbon equipment to enter RO equipment for deep treatment of the clean water to obtain recycled clean water.
The invention provides a sewage post-stage biochemical process, which has the beneficial effects that:
1. the invention can effectively treat the medical linen washing sewage through different treatment systems, reduces the pollution and damage of the directly discharged sewage to the environment, greatly saves water resources by utilizing the recovered water, and promotes the water quality to be greatly improved;
2. the process has the advantages of low operation cost, low power consumption, small occupied area and stable operation, the treated sewage reaches the standard and can be recycled, the pollution to river water and underground water resources can be avoided, the ecological environment is improved, the requirement on clean water resources is reduced, the water supply pressure is relieved, and the process has remarkable economic and social benefits.
Drawings
FIG. 1 is a block diagram of a process for post-biochemical treatment of wastewater according to the present invention;
FIG. 2 is a block flow diagram of a first embodiment of the present invention;
FIG. 3 is a block flow diagram of a second embodiment of the present invention;
fig. 4 is a flow chart of a third embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In embodiment 1, please refer to fig. 1 and 2, the present invention provides a technical solution: a sewage post-stage biochemical process comprises the following steps;
pretreating sewage through a grid, adopting a rotary mechanical grid and a stainless steel frame, and enabling the grid pitch to be 1-2mm, so as to realize preliminary solid-liquid separation, reduce the content of inorganic particulate matters, improve the biodegradability of the sewage and obtain sewage B;
step two, treating the sewage B by using a treatment system to obtain sewage C;
the treatment system comprises a regulating tank, a treatment tank I and a treatment tank II and is used for treating medical linen washing sewage;
the method comprises the following steps:
s1, conveying the sewage into an adjusting tank through a grid, and adjusting the pH value of the sewage to be more than or equal to 7;
s2, conveying the sewage to an activation tank, adding an active adsorbent into the activation tank, and stirring for 3 hours at the temperature of 58 ℃;
s3, performing solid-liquid separation on the sewage by using filter pressing equipment, and performing deep landfill after the soil is solidified;
s4, conveying the sewage subjected to solid-liquid separation to a treatment tank I, adding bacterial powder, uniformly stirring for 3 hours, and standing for 5 hours;
s5, conveying the sewage to a treatment tank II, adding mildew powder to carry out biochemical treatment on the sewage, and carrying out solid-liquid separation to obtain clear water;
the bacteria powder is Bacillus aquaticus powder and Shewanella mansion bacteria powder;
the mildew powder is aldehyde dehydrogenase and keratinase;
step three, conveying the sewage B to a comprehensive adjusting tank, and adjusting the water quantity and the water quality of the sewage through the adjusting tank to obtain sewage C in order to avoid the sedimentation of suspended matters in the adjusting tank and aerating every 3 min;
conveying the sewage C into a class A tank, performing anoxic denitrification treatment in the class A tank, and aerating the class A tank by adopting a rotary fan to provide an oxygen component promoting reaction effect to obtain sewage D;
conveying the sewage D into a B-stage tank, carrying out aerobic nitrification treatment in the B-stage tank, and aerating the B-stage tank by adopting a rotary fan to provide an oxygen component promoting reaction effect to obtain sewage E;
conveying the sewage E to a sedimentation tank for fixed separation to obtain sewage F, and periodically treating and transporting impurities in the sedimentation tank by manpower;
conveying the sewage F to a decoloring oxidation tank for decoloring and sterilizing to obtain clear water A;
lifting the obtained clean water A to an RO filter for filtration treatment, and filtering by quartz sand and activated carbon to obtain clean water B for recycling;
and after the activated carbon is filtered, connecting a water pump and a recycling pipeline, and installing a flowmeter on the recycling pipeline for recording the daily usage amount of the recycled water.
Embodiment 2, please refer to fig. 1 and 3, the present invention provides a technical solution: a sewage post-stage biochemical process comprises the following steps;
pretreating sewage through a grid, adopting a rotary mechanical grid and a stainless steel frame, and enabling the grid pitch to be 5-8mm, so as to realize preliminary solid-liquid separation, reduce the content of inorganic particulate matters, improve the biodegradability of the sewage and obtain sewage A;
step two, treating the sewage A by using a treatment system to obtain sewage B;
the treatment system comprises a plush cleaning device, a foam cleaning tank, an oxygen-free tank, a treatment tank and an ozone tank and is used for treating the washed sewage;
the method comprises the following steps:
s1, conveying the sewage into pile cleaning equipment through a grid to remove piles in the sewage;
s2, conveying the sewage into a foam cleaning tank, and injecting air to enable foams generated in the sewage to float on the surface of the sewage for cleaning;
s3, conveying the sewage into an oxygen-free pool, sealing, vacuumizing and pressurizing to 22MPa, and sealing for 22h at 28 ℃;
s4, conveying the sewage into a treatment tank, adding a flocculating agent, uniformly stirring, and standing for 2 hours;
s5, conveying the sewage into an ozone tank for sealing, introducing ozone and carbon dioxide gas, and stirring for 35min at the temperature of 28 ℃;
the flocculating agent is ferric trichloride, aluminum potassium sulfate and polyaluminum ferric chloride;
step three, conveying the sewage B to a comprehensive adjusting tank, and adjusting the water quantity and the water quality of the sewage through the adjusting tank to obtain sewage C in order to avoid the sedimentation of suspended matters in the adjusting tank and aerating every 2-5 min;
conveying the sewage C into a class A tank, performing anoxic denitrification treatment in the class A tank, and aerating the class A tank by adopting a rotary fan to provide an oxygen component promoting reaction effect to obtain sewage D;
conveying the sewage D into a B-stage tank, carrying out aerobic nitrification treatment in the B-stage tank, and aerating the B-stage tank by adopting a rotary fan to provide an oxygen component promoting reaction effect to obtain sewage E;
conveying the sewage E to a sedimentation tank for fixed separation to obtain sewage F, and periodically treating and transporting impurities in the sedimentation tank by manpower;
conveying the sewage F to a decoloring oxidation tank for decoloring and sterilizing to obtain clear water A;
lifting the obtained clean water A to an RO filter for filtration treatment, and filtering by quartz sand and activated carbon to obtain clean water B for recycling;
and after the activated carbon is filtered, connecting a water pump and a recycling pipeline, and installing a flowmeter on the recycling pipeline for recording the daily usage amount of the recycled water.
Embodiment 3, please refer to fig. 1 and 4, the present invention provides a technical solution: a sewage post-stage biochemical process comprises the following steps;
pretreating sewage through a grid, adopting a rotary mechanical grid and a stainless steel frame, and realizing primary solid-liquid separation by adopting a grid pitch of 6mm, so that the content of inorganic particulate matters can be reduced, the biodegradability of the sewage is improved, and sewage A is obtained;
step two, treating the sewage A by using a treatment system to obtain sewage B;
the treatment system comprises a CASS pool, a disinfection pool, a sewage lifting pump and a sludge concentration pool and is used for treating toxic sewage;
the method comprises the following steps:
s1, conveying the sewage into a CASS tank through a grid to completely mix the sewage with the activated sludge in the CASS tank, and promoting the soluble organic matters in the sewage to be adsorbed by the microorganisms in the activated sludge;
s2, conveying the sewage into a disinfection tank, adding disinfectant into the disinfection tank for disinfection treatment, stirring the sewage for 4 hours at the temperature of 35 ℃, and conveying the sewage by using a sewage lifting pump;
s3, conveying the separated sludge into a sludge concentration tank for concentration and disinfection, and cleaning and transporting the obtained solid sludge;
the disinfectant is chlorine dioxide;
step three, conveying the sewage B to a comprehensive adjusting tank, and adjusting the water quantity and the water quality of the sewage through the adjusting tank to obtain sewage C in order to avoid the sedimentation of suspended matters in the adjusting tank and aerating every 2-5 min;
conveying the sewage C into a class A tank, performing anoxic denitrification treatment in the class A tank, and aerating the class A tank by adopting a rotary fan to provide an oxygen component promoting reaction effect to obtain sewage D;
conveying the sewage D into a B-stage tank, carrying out aerobic nitrification treatment in the B-stage tank, and aerating the B-stage tank by adopting a rotary fan to provide an oxygen component promoting reaction effect to obtain sewage E;
conveying the sewage E to a sedimentation tank for fixed separation to obtain sewage F, and periodically treating and transporting impurities in the sedimentation tank by manpower;
conveying the sewage F to a decoloring oxidation tank for decoloring and sterilizing to obtain clear water A;
lifting the obtained clean water A to an RO filter for filtration treatment, and filtering by quartz sand and activated carbon to obtain clean water B for recycling;
and after the activated carbon is filtered, connecting a water pump and a recycling pipeline, and installing a flowmeter on the recycling pipeline for recording the daily usage amount of the recycled water.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A sewage post-stage biochemical process is characterized in that: comprises the following steps;
step one, conveying the sewage A to a comprehensive regulating reservoir, and regulating the water quantity and the water quality of the sewage through the regulating reservoir to obtain sewage B in order to avoid the suspended matters from precipitating in the regulating reservoir and continuously stirring;
pretreating the sewage B through a grid, adopting mechanical hair removal equipment and a stainless steel frame, and enabling the grid pitch to be 1-2mm, so as to realize preliminary solid-liquid separation, reduce the content of inorganic particulate matters, improve the biodegradability of the sewage and obtain sewage C;
step three, conveying the sewage C into a class A tank, performing hydrolytic acidification treatment in the class A tank, and stirring the class A tank by adopting stirring equipment to fully mix the sewage and perform hydrolysis reaction to obtain sewage D;
conveying the sewage D into a B-stage tank, performing aerobic and membrane separation treatment in the B-stage tank, and aerating the B-stage tank by adopting a rotary fan to provide oxygen to promote reaction to obtain clear water A;
fifthly, conveying the clear water A to a decoloring oxidation tank for decoloring and sterilizing to obtain clear water B;
lifting the obtained clear water B to active carbon for filtering to obtain clear water C;
and step seven, conveying the clean water C to an RO filter for filtering treatment to obtain clean water D for recycling.
2. The biochemical process for the later stage of sewage according to claim 1, wherein: the treatment system comprises a regulating tank, a grating hair removing device, a treatment tank I and a treatment tank II, and comprises the following steps:
and S1, conveying the sewage to a regulating tank through a drainage pipeline to regulate the water quality.
S2, conveying the sewage to a grating hair removing device to remove more than 99% of suspended matters;
s3, the sewage enters a treatment tank I, and the sewage is subjected to hydrolytic acidification treatment;
and S4, enabling the sewage to enter a treatment tank II, carrying out biochemical treatment on the sewage, and carrying out solid-liquid separation to obtain clear water.
3. The biochemical process for the later stage of sewage according to claim 1, wherein: the treatment system comprises a decoloration tank and an ozone tank, and comprises the following steps:
s1, conveying the clear water to a decoloring tank for advanced oxidation and decoloring;
and S2, feeding the clean water into an ozone tank for deep oxidation and decoloration treatment.
4. The biochemical process for the later stage of sewage according to claim 1, wherein: the treatment system comprises an activated carbon treatment device and an RO device, and comprises the following steps:
s1, conveying the decolored and oxidized clear water to activated carbon filtering equipment for reduction treatment;
and S2, allowing the clean water treated by the activated carbon equipment to enter RO equipment for deep treatment of the clean water to obtain recycled clean water.
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| CN115197868A (en) * | 2022-05-17 | 2022-10-18 | 广西师范大学 | Composite microbial agent and method for treating bauxite flotation wastewater by using same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN115197868A (en) * | 2022-05-17 | 2022-10-18 | 广西师范大学 | Composite microbial agent and method for treating bauxite flotation wastewater by using same |
| CN115197868B (en) * | 2022-05-17 | 2023-08-18 | 广西师范大学 | Composite microbial agent and method for treating bauxite flotation wastewater by using same |
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