CN111606517A - Breeding wastewater treatment process - Google Patents

Breeding wastewater treatment process Download PDF

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Publication number
CN111606517A
CN111606517A CN202010511595.2A CN202010511595A CN111606517A CN 111606517 A CN111606517 A CN 111606517A CN 202010511595 A CN202010511595 A CN 202010511595A CN 111606517 A CN111606517 A CN 111606517A
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China
Prior art keywords
tank
sludge
water
sewage
treatment process
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CN202010511595.2A
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Chinese (zh)
Inventor
刘永胜
郭英强
任景超
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CRYSTAL WATER AND BLUE SKY ENVIRONMENTAL ENGINEERING CO LTD
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CRYSTAL WATER AND BLUE SKY ENVIRONMENTAL ENGINEERING CO LTD
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Priority to CN202010511595.2A priority Critical patent/CN111606517A/en
Publication of CN111606517A publication Critical patent/CN111606517A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84Biological processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/90Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/76Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C02F1/763Devices for the addition of such compounds in gaseous form
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/20Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

The invention discloses a culture wastewater treatment process, which comprises the following steps: waste water automatically flows into a grid well from a septic tank, and enters an adjusting tank after larger coarse impurity particles and suspended matters are intercepted by a mechanical grid, and water quality and water quantity are adjusted in the adjusting tank to buffer a peak value; the wastewater in the regulating tank is lifted by a pump and then enters a precipitation and air floatation integrated machine, a dosing device is used for dosing a flocculating agent, and a flocculation precipitation reaction is carried out; the sewage after flocculation precipitation automatically flows into an inclined tube sedimentation tank, and floccules and silt flocculated in the water are precipitated through natural sedimentation, so that the aim of primarily purifying the water quality is fulfilled; the sewage after precipitation automatically flows into an air flotation separation section dissolved air flotation machine of the precipitation air flotation all-in-one machine. The pig raising sewage is prevented from being discharged randomly, the environmental influence is reduced, the treated sewage is recycled, the water resource is saved, the waste gas generated in the sewage treatment process is treated by the biological deodorization device, the deodorization is thorough, and no secondary pollution is caused.

Description

Breeding wastewater treatment process
Technical Field
The invention relates to cultivation wastewater treatment, in particular to a cultivation wastewater treatment process.
Background
The ecological farm construction project conforms to the national industrial policy and the industry development plan, conforms to the development requirement of agricultural industrialization and the industry development trend of pig breeding scale and ecology, and is a good project for enriching the vegetable basket in cities and countryside, ensuring pork supply, ensuring meat safety and developing agricultural economy. Especially, the breeding infrastructure is weak, the livestock and poultry manure and the flushing sewage cannot be effectively treated, the problem of environmental sanitation pollution is increasingly prominent, the ubiquitous problems that human excrement is randomly stacked in the open air without being treated and is produced, domestic garbage is randomly discharged to cause the dirty, messy and poor agricultural ecological environment and the like are generally existed, and some infectious viruses are arbitrarily diffused through the manure, the garbage and the sewage to threaten the public health in rural areas, and the production safety of the pig raising industry is also influenced. The pig raising wastewater mainly comes from pig urine, pigsty flushing wastewater, domestic sewage and the like, contains a large amount of excrement, domestic impurities and the like, belongs to high-concentration organic wastewater, has strong fishy smell, contains more pathogenic microorganisms and has high wastewater pollutant content. After the untreated sewage enters a natural water body, the contents of solid suspended matters, organic matters and microorganisms in the water are increased, the physical, chemical and biological community composition of the water body is changed, and the water quality is changed. The sewage contains a large amount of pathogenic microorganisms which are diffused and spread through water or aquatic animals, so that the health of people and livestock is harmed. In order to achieve the organic combination of economic benefit, social benefit and environmental benefit, enterprises can walk sustainable development roads and the sewage needs to be effectively treated. Therefore, the technical personnel in the field provide a cultivation wastewater treatment process to solve the problems in the background technology.
Disclosure of Invention
The invention aims to provide a culture wastewater treatment process to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a cultivation wastewater treatment process comprises the following steps:
the method comprises the following steps that firstly, wastewater automatically flows into a grid well from a septic tank, intercepts large coarse impurity particles and suspended substances through a mechanical grid, then enters an adjusting tank, adjusts the water quality and the water quantity in the adjusting tank, and buffers peak values;
lifting the wastewater in the regulating tank by a pump, then feeding the wastewater into a precipitation and air floatation integrated machine, adding a flocculating agent into a dosing flocculation tank through a dosing device, and performing flocculation and precipitation reaction;
thirdly, the sewage after flocculation precipitation automatically flows into an inclined tube sedimentation tank, and floccules and silt flocculated in the water are precipitated through natural sedimentation, so that the purpose of primarily purifying the water quality is achieved;
enabling the settled sewage to automatically flow into a dissolved air flotation machine at an air flotation separation section of the settling air flotation all-in-one machine, enabling the sewage to float floatage, food residues, excrement residues and other floating objects to the surface of the sewage through micro bubbles released by a releaser in the air flotation machine, and intensively collecting the floating objects into a residue scraping groove through a residue scraping system;
and fifthly, the effluent of the dissolved air floatation machine automatically flows into an A/O biochemical pool of the biochemical treatment unit. The biological treatment of carbon, nitrogen and phosphorus is synchronously carried out, the organic pollutants in the wastewater are further degraded, and the nitrogen and phosphorus are synchronously removed;
sixthly, the effluent of the aerobic tank enters a secondary sedimentation tank for mud-water separation, secondary sedimentation and secondary water purification;
seventhly, refluxing one part of sludge to the front end of the A/O biochemical pool through a sludge reflux pump, and taking the other part of sludge as residual sludge to enter the sludge pool;
eighthly, the effluent of the secondary sedimentation tank automatically flows into an intermediate water tank for buffering, the water in the intermediate water tank is lifted to a multi-media filter by a lifting pump, and automatically flows into a disinfection water tank after being filtered by the multi-media filter;
ninth, the disinfection water tank is disinfected by chlorine dioxide adding equipment and then enters a reclaimed water storage tank for reuse;
and tenthly, lifting the sludge in the sludge tank to a plate-and-frame filter press through a sludge pump, dehydrating, and periodically transporting sludge cakes out for composting treatment.
As a further scheme of the invention: impurities intercepted by the grating, suspended matters collected by the slag scraping groove and sludge treated by the plate-and-frame filter press are periodically cleaned, and filtrate flows back to the regulating tank to participate in water treatment circulation again.
As a still further scheme of the invention: the waste gas generated by the grid well, the adjusting tank, the dosing flocculation tank, the inclined tube sedimentation tank and the dissolved air floatation machine is collected by a negative pressure collecting pipeline and sent into a biological deodorization device (a pretreatment system, a deodorization tower, a circulating pump, a dosing device, an induced draft fan and an exhaust funnel), so that the odor is fully contacted with a biological carrier, the biochemical action is generated by the microorganisms in the carrier and the odor, and the odor-causing substances in the odor are removed and discharged after reaching the standard.
As a still further scheme of the invention: the grid well adopts secret reinforced concrete structure, passes through the entrance to a cave with the equalizing basin and links to each other, sets up mechanical grid or dull and stereotyped grid in the grid well for receive sewage, intercept large granule suspended substance, get rid of thick debris in the sewage, the grid sediment under the interception is in time transported to the pig manure and is kept in and carry out compost treatment together with the pig manure.
As a still further scheme of the invention: the adjusting tank is of an underground reinforced concrete structure and is connected with the grid well through a hole for collecting the incoming water, inorganic particles with high sedimentation density and adjusting the water quality.
As a still further scheme of the invention: the dosing flocculation tank adopts an overground steel structure, is arranged into an integrated structure with the inclined tube sedimentation tank and the dissolved air floatation machine, and is used for flocculation and contact reaction of sewage under the action of a medicament;
the inclined tube sedimentation tank adopts an overground steel structure, and is integrated with the dosing flocculation tank and the dissolved air floatation machine to precipitate impurities such as silt, SS and the like;
the dissolved air flotation machine adopts a ground steel structure, and is integrated with the dosing flocculation tank and the inclined tube sedimentation tank to remove floating substances such as SS, floccules, oils and the like.
As a still further scheme of the invention: the A/O biochemical tank adopts an underground steel structure, and is integrated with the secondary sedimentation tank, the intermediate water tank and the disinfection tank to degrade organic matters in sewage, remove nitrogen and phosphorus;
the A/O biochemical tank adopts an underground steel structure, and is integrated with the secondary sedimentation tank, the intermediate water tank and the disinfection tank to degrade organic matters in sewage, remove nitrogen and phosphorus;
the intermediate water tank adopts an underground steel structure, and is integrated with the A/O biochemical tank, the secondary sedimentation tank and the disinfection tank, and the effluent of the secondary sedimentation tank is buffered and is lifted to the multi-media filter by a pump;
the multi-medium filter is made of glass fiber reinforced plastic and is arranged in the equipment room;
the disinfection tank adopts an underground steel structure and is integrated with the A/O biochemical tank, the secondary sedimentation tank and the intermediate water tank.
As a still further scheme of the invention: a chlorine dioxide feeder for disinfecting sewage in the disinfection tank.
As a still further scheme of the invention: the plate-and-frame filter press is arranged in the equipment room and used for the dehydration treatment of sludge in the sludge tank.
As a still further scheme of the invention: the sludge tank adopts an underground reinforced concrete structure and is used for temporarily storing sludge, the sludge is conveyed to a plate-and-frame filter press for centralized treatment by a pump at regular intervals according to the condition of the residual sludge amount in the sludge tank, and dry sludge is conveyed to a qualified unit for treatment by using a transport vehicle.
Compared with the prior art, the invention has the beneficial effects that:
1. the pig raising sewage is prevented from being discharged randomly, and the environmental influence is reduced.
2. The treated sewage is recycled, so that water resources are saved.
3. The waste gas generated in the sewage treatment process is treated by the biological deodorization device, the deodorization is thorough, and no secondary pollution is caused.
Drawings
FIG. 1 is a schematic flow diagram of a cultivation wastewater treatment process.
In the figure: 1. a grid well; 2. a mechanical grid; 3. a regulating tank; 4. a dosing flocculation tank; 5. an inclined tube sedimentation tank; 6. a dissolved air flotation machine; 7. an A/O biochemical pool; 8. a secondary sedimentation tank; 9. a middle water tank; 10. a multi-media filter; 11. a disinfection water tank; 12. chlorine dioxide dosing equipment; 13. a reclaimed water storage pool; 14. a sludge tank; 15. a plate-and-frame filter press; 16. a biological deodorization device.
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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, in an embodiment of the present invention, a cultivation wastewater treatment process includes the following steps:
the method comprises the following steps that firstly, wastewater automatically flows into a grid well 1 from a septic tank, larger coarse and impurity particles and suspended substances are intercepted by a mechanical grid 2, then the wastewater enters an adjusting tank 3, water quality and water quantity are adjusted in the adjusting tank 3, and a peak value is buffered;
secondly, lifting the wastewater in the regulating tank 3 by a pump, then feeding the wastewater into a precipitation and air floatation integrated machine, adding a flocculating agent into a dosing and flocculation tank 4, and performing flocculation and precipitation reaction;
thirdly, the sewage after flocculation precipitation automatically flows into an inclined tube sedimentation tank 5, and floccules and silt flocculated in the water are precipitated through natural sedimentation, so that the purpose of primarily purifying the water quality is achieved;
fourthly, the settled sewage automatically flows into a dissolved air flotation machine 6 at an air flotation separation section of the sedimentation and air flotation all-in-one machine, floe, food residues, excrement residues and other floaters are floated to the surface of the sewage through micro bubbles released by a releaser in the air flotation machine, and are collected into a residue scraping groove through a residue scraping system;
fifthly, the effluent of the dissolved air flotation machine 6 automatically flows into an A/O biochemical pool 7 of the biochemical treatment unit. The biological treatment of carbon, nitrogen and phosphorus is synchronously carried out, so that organic pollutants in the wastewater are further degraded, and nitrogen and phosphorus are synchronously removed;
sixthly, the effluent of the aerobic tank enters a secondary sedimentation tank 8 for mud-water separation, secondary sedimentation and secondary water purification;
seventhly, returning one part of the sludge to the front end of the A/O biochemical tank 7 through a sludge return pump, and taking the other part of the sludge as residual sludge to enter a sludge tank 14;
eighthly, the effluent of the secondary sedimentation tank 8 automatically flows into an intermediate water tank 9 for buffering, the water in the intermediate water tank 9 is lifted to a multi-media filter 10 by a lifting pump, and the water automatically flows into a disinfection water tank 11 after being filtered by the multi-media filter 10;
ninthly, the disinfection water tank 11 is disinfected by chlorine dioxide adding equipment 12 and then enters a reclaimed water storage tank 13 for recycling;
and tenthly, lifting the sludge in the sludge pool 14 to a plate-and-frame filter press 15 through a sludge pump, dehydrating, and periodically transporting sludge cakes out for composting treatment.
Sundries intercepted by the grating and suspended matters collected by the slag scraping groove and sludge treated by the plate-and-frame filter press 15 are regularly transported, filtrate flows back to the regulating tank 3 and participates in water treatment circulation again, waste gas generated by the grating well 1, the regulating tank 3, the dosing flocculation tank 4, the inclined tube sedimentation tank 5 and the dissolved air floatation machine 6 is collected by a negative pressure collecting pipeline and sent into a biological deodorization device 16 (a pretreatment system, a deodorization tower, a circulating pump, a dosing device, an induced draft fan and an exhaust funnel), odor is fully contacted with a biological carrier, and the biochemical action is generated between microorganisms in the carrier and the odor, so that odor-causing substances in the odor are removed and discharged after reaching the standard.
The grid well 1 is of an underground reinforced concrete structure and is connected with an adjusting tank 3 through a hole, a mechanical grid 2 or a flat grid is arranged in the grid well 1 and is used for receiving sewage, intercepting large-particle suspended substances and removing coarse and large impurities in the sewage, the intercepted grid slag is timely transported to a temporary pig manure storage room to be composted together with the pig manure, the adjusting tank 3 is of an underground reinforced concrete structure and is connected with the grid well 1 through the hole and is used for collecting incoming water, inorganic particles with high sedimentation density and adjusting water quality, a dosing flocculation tank 4 is of an aboveground steel structure and is of an integrated structure with an inclined tube sedimentation tank 5 and a dissolved air flotation machine 6 so as to flocculate and contact-react the sewage under the action of a medicament; the inclined tube sedimentation tank 5 adopts an overground steel structure, is integrated with the dosing flocculation tank 4 and the dissolved air flotation machine 6, and is used for settling impurities such as silt, SS and the like; the dissolved air flotation machine 6 adopts an overground steel structure, is arranged into an integrated structure with the dosing flocculation tank 4 and the inclined tube sedimentation tank 5 to remove floating substances such as SS, floccules, oils and the like, adopts an underground steel structure as the A/O biochemical tank 7, is arranged into an integrated structure with the secondary sedimentation tank 8, the intermediate water tank 9 and the disinfection tank to degrade organic matters in sewage, remove nitrogen and phosphorus; the A/O biochemical tank 7 adopts an underground steel structure, and is integrated with the secondary sedimentation tank 8, the intermediate water tank 9 and the disinfection tank to degrade organic matters in sewage, remove nitrogen and phosphorus; the intermediate water tank 9 adopts an underground steel structure, and is integrated with the A/O biochemical tank 7, the secondary sedimentation tank 8 and the disinfection tank, and the effluent of the secondary sedimentation tank 8 is buffered and is lifted to the multi-media filter 10 by a pump; the multi-medium filter 10 is made of glass fiber reinforced plastic and is arranged in the equipment room; the disinfection pond adopts underground steel construction, with biochemical pond 7 of AO, two heavy ponds 8, middle pond 9 establishes to the integral type structure, chlorine dioxide throws the ware, a disinfection treatment for sewage in the disinfection pond, plate and frame filter press 15 places between the equipment room, a dehydration for 14 mud in sludge impoundment, sludge impoundment 14 adopts underground reinforced concrete structure, a temporary storage for mud, transport to 15 centralized processing of plate and frame filter press by the pump regularly according to 14 surplus sludge volume conditions in sludge impoundment, transport to having the unit of qualification to handle with the transport vechicle outward for dry sludge.
The working principle of the invention is as follows:
waste water automatically flows into a grating well 1 from a septic tank, and enters an adjusting tank 3 after larger coarse and impurity particles and suspended matters are intercepted by a mechanical grating 2, and water quality and water quantity are adjusted in the adjusting tank 3 to buffer peak values. The wastewater in the adjusting tank 3 enters a precipitation and air flotation integrated machine and is added into a dosing and flocculation tank 4 after being lifted by a pump, and a flocculating agent is added through a dosing device to generate a flocculation and precipitation reaction. The sewage after flocculation and precipitation automatically flows into an inclined tube sedimentation tank 5, and flocculated floccules and silt in the water are precipitated through natural sedimentation, so that the purpose of preliminarily purifying the water quality is achieved. The settled sewage automatically flows into a dissolved air flotation machine 6 of an air flotation separation section of the sedimentation and air flotation all-in-one machine, floes, food residues, excrement residues and other floating matters are floated to the surface of the sewage through micro bubbles released by a releaser in the air flotation machine, and are collected into a residue scraping groove through a residue scraping system. The effluent of the dissolved air flotation machine 6 automatically flows into a biochemical treatment unit, namely an A/O biochemical tank 7. The biological treatment of carbon, nitrogen and phosphorus is synchronously carried out, the organic pollutants in the wastewater are further degraded, and the nitrogen and phosphorus are synchronously removed. And (4) the effluent of the aerobic tank enters a secondary sedimentation tank 8 for mud-water separation, secondary sedimentation and secondary water purification. One part of the sludge flows back to the front end of the A/O biochemical tank 7 through a sludge return pump, and the other part of the sludge enters a sludge tank 14 as residual sludge. The effluent of the secondary sedimentation tank 8 automatically flows into an intermediate water tank 9 for buffering, the water in the intermediate water tank 9 is lifted to a multi-media filter 10 by a lift pump, and the water automatically flows into a disinfection water tank 11 after being filtered by the multi-media filter 10. The disinfection water tank 11 enters a reclaimed water storage tank 13 for reuse after being disinfected by chlorine dioxide adding equipment 12. Sludge in the sludge pool 14 is lifted to a plate-and-frame filter press 15 by a sludge pump for dehydration, and then sludge cakes are periodically transported out for composting treatment. The Roots blower provides sufficient oxygen for the A/O biochemical pool 7.
Impurities intercepted by the grating and suspended matters collected by the slag scraping groove and sludge treated by the plate-and-frame filter press 15 are periodically cleaned, and filtrate flows back to the regulating tank 3 to participate in water treatment circulation again.
The waste gas of grid well 1, equalizing basin 3, add medicine flocculation basin 4, pipe chute sedimentation tank 5 and dissolved air flotation machine 6's production is collected through the negative pressure collection pipeline and is sent into biological deodorizing device 16 (pretreatment systems, deodorizing tower, circulating pump, charge device, draught fan, aiutage), fully contacts foul smell and biological carrier, utilizes the microorganism in the carrier and the foul smell to take place biochemical effect, discharges after getting rid of the foul smell material up to standard in the foul smell.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent substitutions or changes according to the technical solution and the inventive concept of the present invention should be covered by the scope of the present invention.

Claims (10)

1. A cultivation wastewater treatment process is characterized by comprising the following steps:
the method comprises the following steps that firstly, wastewater automatically flows into a grid well from a septic tank, and enters an adjusting tank after larger coarse and impurity particles and suspended matters are intercepted by a mechanical grid, water quality and water quantity are adjusted in the adjusting tank, and a peak value is buffered;
lifting the wastewater in the regulating tank by a pump, then feeding the wastewater into a precipitation and air floatation integrated machine, adding a flocculating agent into a dosing flocculation tank through a dosing device, and performing flocculation and precipitation reaction;
thirdly, the sewage after flocculation precipitation automatically flows into an inclined tube sedimentation tank, and floccules and silt flocculated in the water are precipitated through natural sedimentation, so that the purpose of primarily purifying the water quality is achieved;
enabling the settled sewage to automatically flow into a dissolved air flotation machine at an air flotation separation section of the settling air flotation all-in-one machine, enabling the sewage to float floatage, food residues, excrement residues and other floating objects to the surface of the sewage through micro bubbles released by a releaser in the air flotation machine, and intensively collecting the floating objects into a residue scraping groove through a residue scraping system;
and fifthly, the effluent of the dissolved air floatation machine automatically flows into an A/O biochemical pool of the biochemical treatment unit. The biological treatment of carbon, nitrogen and phosphorus is synchronously carried out, so that organic pollutants in the wastewater are further degraded, and nitrogen and phosphorus are synchronously removed;
sixthly, the effluent of the aerobic tank enters a secondary sedimentation tank for mud-water separation, secondary sedimentation and secondary water purification;
seventhly, returning one part of the sludge to the front end of the A/O biochemical tank through a sludge return pump, and taking the other part of the sludge as residual sludge to enter the sludge tank;
eighthly, the effluent of the secondary sedimentation tank automatically flows into an intermediate water tank for buffering, the water in the intermediate water tank is lifted to a multi-media filter by a lifting pump, and automatically flows into a disinfection water tank after being filtered by the multi-media filter;
ninth, the disinfection water tank is disinfected by chlorine dioxide adding equipment and then enters a reclaimed water storage tank for reuse;
and tenthly, lifting the sludge in the sludge tank to a plate-and-frame filter press through a sludge pump, dehydrating, and periodically transporting sludge cakes out for composting treatment.
2. The aquaculture wastewater treatment process according to claim 1, wherein impurities intercepted by the grating and suspended matters collected by the scum groove and sludge treated by the plate and frame filter press are periodically cleaned, and filtrate flows back to the regulating tank to participate in water treatment circulation again.
3. The aquaculture wastewater treatment process according to claim 1, wherein the waste gas generated by the grid well, the adjusting tank, the dosing flocculation tank, the inclined tube sedimentation tank and the dissolved air flotation machine is collected by a negative pressure collection pipeline and sent to a biological deodorization device (a pretreatment system, a deodorization tower, a circulating pump, a dosing device, an induced draft fan and an exhaust funnel), so that the odor is fully contacted with a biological carrier, and the odor is removed by biochemical action of microorganisms in the carrier and the odor, and the odor is discharged after reaching the standard.
4. The aquaculture wastewater treatment process according to claim 1, wherein the grid well is of an underground reinforced concrete structure and is connected with the adjusting tank through a hole, a mechanical grid or a flat grid is arranged in the grid well and is used for receiving sewage, intercepting large-particle suspended substances, removing coarse and large impurities in the sewage, and the intercepted grid slag is timely transported to a pig manure temporary storage room to be composted together with the pig manure.
5. The aquaculture wastewater treatment process of claim 1, wherein the adjusting tank is made of underground reinforced concrete and is connected with the grid well through the opening to collect the incoming water, settle inorganic particles with high density and adjust the water quality.
6. The aquaculture wastewater treatment process according to claim 1, wherein the dosing flocculation tank adopts an above-ground steel structure, and is integrated with the inclined tube sedimentation tank and the dissolved air floatation machine to realize flocculation and contact reaction of sewage under the action of a medicament;
the inclined tube sedimentation tank adopts an overground steel structure, and is integrated with the dosing flocculation tank and the dissolved air floatation machine to precipitate impurities such as silt, SS and the like;
the dissolved air flotation machine adopts a ground steel structure, and is integrated with the dosing flocculation tank and the inclined tube sedimentation tank to remove floating substances such as SS, floccules, oils and the like.
7. The aquaculture wastewater treatment process of claim 1, wherein the A/O biochemical tank is of an underground steel structure, and is integrated with the secondary sedimentation tank, the intermediate water tank and the disinfection tank to degrade organic matters in wastewater, remove nitrogen and phosphorus;
the A/O biochemical tank adopts an underground steel structure, and is integrated with the secondary sedimentation tank, the intermediate water tank and the disinfection tank to degrade organic matters in sewage, remove nitrogen and phosphorus;
the intermediate water tank adopts an underground steel structure, and is integrated with the A/O biochemical tank, the secondary sedimentation tank and the disinfection tank, and the effluent of the secondary sedimentation tank is buffered and is lifted to the multi-media filter by a pump;
the multi-medium filter is made of glass fiber reinforced plastic and is arranged in the equipment room;
the disinfection tank adopts an underground steel structure and is integrated with the A/O biochemical tank, the secondary sedimentation tank and the intermediate water tank.
8. The aquaculture wastewater treatment process of claim 1, wherein the chlorine dioxide adding device is used for disinfection treatment of wastewater in the disinfection tank.
9. The aquaculture wastewater treatment process of claim 1, wherein the plate and frame filter press is placed in the equipment room for dehydration of sludge in the sludge tank.
10. The aquaculture wastewater treatment process according to claim 1, wherein the sludge tank is of an underground reinforced concrete structure and is used for temporarily storing sludge, the sludge is periodically conveyed to a plate-and-frame filter press for centralized treatment by a pump according to the condition of the residual sludge amount in the sludge tank, and the dry sludge is conveyed to a qualified unit for treatment by using a transport vehicle.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113072248A (en) * 2021-03-26 2021-07-06 江西清绿环保有限公司 Pig raising wastewater sludge fermentation process
CN113387510A (en) * 2021-06-17 2021-09-14 南京工大膜应用技术研究所有限公司 Energy-saving emission-reducing sewage treatment equipment for sewage station and treatment process thereof
CN113480053A (en) * 2021-08-19 2021-10-08 河北怡境园环保科技有限公司 Livestock and poultry manure sewage treatment equipment
CN113582462A (en) * 2021-08-16 2021-11-02 华能榆社发电有限责任公司 Sewage treatment system and method
CN113800724A (en) * 2021-10-22 2021-12-17 大智农牧科技集团有限公司 Reclaimed water recycling treatment process
CN113860655A (en) * 2021-10-29 2021-12-31 深圳市福田区环境技术研究所有限公司 Wastewater treatment system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113072248A (en) * 2021-03-26 2021-07-06 江西清绿环保有限公司 Pig raising wastewater sludge fermentation process
CN113387510A (en) * 2021-06-17 2021-09-14 南京工大膜应用技术研究所有限公司 Energy-saving emission-reducing sewage treatment equipment for sewage station and treatment process thereof
CN113582462A (en) * 2021-08-16 2021-11-02 华能榆社发电有限责任公司 Sewage treatment system and method
CN113480053A (en) * 2021-08-19 2021-10-08 河北怡境园环保科技有限公司 Livestock and poultry manure sewage treatment equipment
CN113800724A (en) * 2021-10-22 2021-12-17 大智农牧科技集团有限公司 Reclaimed water recycling treatment process
CN113860655A (en) * 2021-10-29 2021-12-31 深圳市福田区环境技术研究所有限公司 Wastewater treatment system

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