CN104743742A - Chemimechanical pulp wastewater treatment system - Google Patents
Chemimechanical pulp wastewater treatment system Download PDFInfo
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- CN104743742A CN104743742A CN201510102375.3A CN201510102375A CN104743742A CN 104743742 A CN104743742 A CN 104743742A CN 201510102375 A CN201510102375 A CN 201510102375A CN 104743742 A CN104743742 A CN 104743742A
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Abstract
The invention relates to a chemimechanical pulp wastewater treatment system. The chemimechanical pulp wastewater treatment system comprises a wastewater regulation tank, a reinforcing floatation tank, an ozone oxidation and sedimentation tank, a cross-flow anoxic and anaerobic reaction tank, a perfect mixing aerobic tank, a secondary sedimentation tank and a backflow biological aerated filter tank, wherein the reinforcing floatation tank sequentially comprises a mud-sand region, a mixing region and a separation region from bottom to top; the ozone oxidation and sedimentation tank comprises an aerated mixing region and a sedimentation region; the cross-flow anoxic and anaerobic reaction tank comprises a facultative aerobic section, an anoxic section and an anaerobic section which are separated by baffle plates; the perfect mixing aerobic tank is provided with a water inlet pipe, a water distribution triangular cone and an aeration regulation and control system; and the backflow biological aerated filter tank comprises a lower flow region, an upper flow region and a sludge region. According to the chemimechanical pulp wastewater treatment system, wastewater enters the reinforcing floatation tank through the wastewater regulation tank, scum is removed, the wastewater enters the ozone oxidation and sedimentation tank, pollutants are oxidized and decomposed, and then the wastewater enters the cross-flow anoxic and anaerobic reaction tank and the perfect mixing aerobic tank to be subjected to anoxic, anaerobic and aerobic reactions, reacts and is filtered in the backflow biological aerated filter tank and is then reused.
Description
Technical field
The present invention relates to technical field of waste water processing, be specifically related to a kind of chemimechanical pulp Waste Water Treatment.
Background technology
Pollutent in chemical machinery pulp waste water mainly from the fiber fines of the organism of stripping in production process, remaining pharmaceutical chemicals and loss, complicated component, the biodegradability of waste water is poor, belongs to and is difficult to the degradable trade effluent of use biochemical process; Contain a large amount of suspended substances in waste water simultaneously; There is larger colourity etc.Traditional physical chemistry and biochemical processing process is adopted to process chemical machinery pulp waste water, be difficult to reach efficient, energy-conservation, the demand such as low cost and environmental protection, therefore, based on conventional physical chemistry and biochemical processing process, the research and development carrying out a new combined process improving or innovate have become the focus of chemimechanical pulp wastewater treatment research.
Summary of the invention
The technical problem to be solved in the present invention is: in order to solve the difficult problem in above-mentioned chemimechanical pulp wastewater treatment, the invention provides a kind of chemimechanical pulp Waste Water Treatment.
The technical solution adopted for the present invention to solve the technical problems is: a kind of chemimechanical pulp Waste Water Treatment, comprises wastewater equalization pond, strengthening air flotation pool, ozone oxidation settling tank, deflector type anoxic anaerobic reation pool, mixes Aerobic Pond, second pond and reflux formula BAF completely; Described wastewater equalization pond, strengthening air flotation pool, ozone oxidation settling tank, deflector type anoxic anaerobic reation pool, mix Aerobic Pond completely, second pond is communicated with successively with reflux formula BAF.
Described wastewater equalization pond comprises water inlet pipe and rising pipe, for regulating water quality and the water yield of chemical machinery pulp waste water.
Described strengthening air flotation pool comprises water inlet pipe and the rising pipe for discharging the rear water of process, and described strengthening air flotation pool is followed successively by silt particle district, mixing zone and disengaging zone from bottom to up; Described disengaging zone comprises catchment area and is positioned at Nei Jizha district, catchment area; Be provided with aeration plate between the silt particle district of described strengthening air flotation pool and mixing zone, the top of described aeration plate is provided with water distribution branch pipe, and described water distribution branch pipe connects water inlet pipe, and described aeration plate is connected with the blower fan outside strengthening air flotation pool by aeration tube; Triphase separator is provided with in described disengaging zone, described triphase separator comprise flow deflector and be positioned at below flow deflector with flow deflector with the use of triangle guide ring, described triangle guide ring is arranged on the inwall of strengthening air flotation pool, the top of described flow deflector is identical with the shape of disengaging zone, the bottom of described flow deflector is horn-like, and the internal diameter of the bottom of described flow deflector is greater than the internal diameter of triangle guide ring; The top of described disengaging zone outer wall is provided with overfalling weir, and described overfalling weir is connected with rising pipe; Described Ji Zhaqu is laid with dreg scraper and scum silica frost groove; When waste water overflows from the bottom up, water enters the bottom of flow deflector together with scum silica frost by triangle guide ring, and scum silica frost continues up to enter Ji Zhaqu, and water enters catchment area by the gap between flow deflector and triangle guide ring; In order to the better effects if of wastewater treatment, described water distribution branch pipe is arranged to concentric circles or cross shape, water distribution branch pipe has horizontal radiation water outlet; Further, described aeration plate is the pore type aeration plate being evenly provided with micropore; Due to water, sedimentary density difference, realize being separated under triphase separator effect; In order to discharge the throw out after process, bottom described strengthening air flotation pool, be provided with sediment discharge valve.
The rising pipe of described strengthening air flotation pool is communicated with the water inlet pipe of ozone oxidation settling tank.
Described ozone oxidation settling tank comprises aeration mixing zone and settling region, ozonation aerated dish is provided with bottom aeration mixing zone, the top of described ozonation aerated dish is provided with water distribution branch pipe, described water distribution branch pipe connects water inlet pipe, described ozonation aerated dish is connected with the blower fan outside ozone oxidation settling tank by aeration tube, blower and pipeline is communicated with ozonizer; Baffle plate is provided with in described settling region, the inwall of this baffle plate and settling tank forms the waste water runner entering settling region as waste water, the exit of settling region is provided with triphase separator, the outlet top of settling region is provided with overfalling weir, the tapered structure of settling region bottom design, is provided with mud valve bottom settling region.
Described deflector type anoxic anaerobic reation pool comprises the double oxygen section, anoxic section and the anaerobism section that are separated into by traverse baffle, described double oxygen section head end is provided with the water inlet pipe for feeding waste water, oxygen section end of holding concurrently is communicated with anoxic section head end, anoxic section end is communicated with anaerobism section head end, the bottom of described anoxic section and anaerobism section water inlet side traverse baffle is provided with the corner of 45 degree, the shock action produced when entering to avoid current, thus the effect playing buffering current and water distribution uniformity; Anaerobism section end is provided with triphase separator and overfalling weir, and overfalling weir connects rising pipe; Described double oxygen section, anoxic section and the tapered structure of anaerobism section bottom design, pyramidal structure connects mud discharging valve; The double oxygen section of described deflector type anoxic anaerobic reation pool, anoxic section and anaerobism section upper cover design coning structure, conical structure top is all provided with independently methane waste product effuser.
In the described Aerobic Pond of mixing completely, middle and lower part is provided with water inlet pipe, and described water inlet pipe bottom is provided with water distribution pyrometric cone; Described water distribution pyrometric cone bottom is provided with aeration regulator control system, and described aeration regulator control system comprises aeration plate, gas blower and dissolved oxygen sensing regulation device; Further, described aeration plate is the pore type aeration plate being evenly provided with micropore.Described aeration plate connects gas blower by aeration tube, gas blower is arranged on and mixes outside Aerobic Pond completely, mix the top of Aerobic Pond, waste water underwater completely and arrange dissolved oxygen sensing regulation device, described dissolved oxygen sensing regulation device is according to the work of oxygen capacity regulation and control gas blower; The described exit mixing Aerobic Pond is completely laid with overflow weir.
The described rising pipe mixing Aerobic Pond completely connects second pond, and be provided with sludge recirculation system bottom second pond, a part of sludge reflux is to deflector type anoxic anaerobic reation pool and mix Aerobic Pond completely.
Water after sedimentation in secondary sedimentation tank process enters the water inlet pipe of reflux formula BAF through overflow weir.
Described reflux formula BAF middle and upper part is cylindrical, bottom is conical structure, comprises lower current area, ascending zone and mud district; Described lower current area is positioned at the middle part of the cylindrical structural of reflux formula BAF, for cylindrical structural, lower current area top is provided with water inlet pipe and water distributor, filler is provided with in the middle part of lower current area, lower current area bottom is provided with aeration tube, the bottom of described lower current area is provided with traverse baffle, and the longitudinal section of described traverse baffle is horn-like; Described ascending zone is positioned at the periphery of lower current area, the top of traverse baffle, and be provided with filler in the middle part of ascending zone, bottom is provided with aeration tube, and the exit on ascending zone top is provided with overfalling weir; Described mud district is positioned at the bottom of the bottom of reflux formula BAF, lower current area and ascending zone, and the bottom in mud district is provided with mud discharging valve.
Adopt above-mentioned chemimechanical pulp Waste Water Treatment to carry out a method for wastewater treatment, there are following steps:
1. chemical machinery pulp waste water enters wastewater equalization pond regulating water quality and the water yield by water inlet pipe.
2. then waste water enters the middle and lower part of strengthening air flotation pool disengaging zone by water inlet pipe; The aeration plate be arranged in below strengthening air flotation pool water inlet pipe produces a large amount of tiny bubble makes the solids of waste water produce friction, removes other pollutents on solids; The tiny bubble that aeration plate produces and supernatant adhere to and form mixture and rise under buoyancy, under the effect of strengthening air flotation pool disengaging zone triphase separator, mixture rises to Ji Zhaqu, and under the effect of dreg scraper, scum silica frost enters scum silica frost groove and cleaned outward transport; Throw out sinks to the silt particle district of strengthening air flotation pool bottom under gravity, is discharged by the sediment discharge valve bottom strengthening air flotation pool; Water after separating treatment enters strengthening air flotation pool catchment area under the effect of strengthening air flotation pool three-phase separation area flow deflector, is communicated with the water inlet pipe of ozone oxidation settling tank by overfalling weir, rising pipe and pipe connecting.
3. waste water enters the middle and lower part of ozone oxidation settling tank by the water inlet pipe of ozone oxidation settling tank and water distribution branch pipe; The ozonation aerated dish be arranged in below ozone oxidation settling tank water distribution branch pipe produces a large amount of tiny bubble makes the solids of waste water rub further, macromolecular substance in waste water is oxidized to the small-molecule substance being easy to absorb and adsorb simultaneously, waste water after oxygenolysis enters the waste water runner of settling region, and the triphase separator of settling region realizes mud-water separation; Mud sinks to the bottom of ozone oxidation settling tank settling region under gravity, is discharged by the mud valve of bottom; Waste water is communicated with the water inlet pipe of deflector type anoxic anaerobic reation pool by overfalling weir, rising pipe with pipe connecting.
4. waste water enters the bottom of deflector type anoxic anaerobic reation pool by the hold concurrently water inlet pipe of oxygen section of deflector type anoxic anaerobic reation pool; Waste water advances up and down along traverse baffle after entering deflector type anoxic anaerobic reation pool, successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section, anoxic section and anaerobism section, mud in reaction tank moves along with the upper current downflow of waste water and the effect of biogas rising, the settlement action of the barrier effect of traverse baffle and mud self makes again the flow velocity of mud reduce, therefore a large amount of mud is all trapped within reaction tank, and the microorganism in reaction tank fully contacts with the organism in waste water.The suspended contaminant such as the fiber in waste water, carbohydrate and dissolved organic matter are hydrolyzed to organic acid by the heterotrophic bacterium of the amphimicrobe of oxygen section, anoxic section and the anaerobism section held concurrently, make larger molecular organics be decomposed into small organic molecule, insoluble organism changes into dissolved organic matter.
5. the waste water after anaerobic reaction realizes the separation of mud, water, methane gas at the triphase separator that anaerobism section end is provided with, and mud sinks to the bottom of deflector type anoxic anaerobic reation pool under gravity, and unnecessary mud is discharged by the mud discharging valve of bottom; The methane waste product that deflector type anoxic anaerobic reation pool produces collects discharge by reaction tank top effuser; Waste water after process is communicated with the water inlet pipe mixing Aerobic Pond completely by overfalling weir, rising pipe and pipe connecting.
6. waste water enters the middle and lower part mixing Aerobic Pond completely by water inlet pipe, water distribution uniformity under the effect of water distribution pyrometric cone, described aeration plate is the pore type aeration plate being evenly provided with micropore, produce a large amount of microbubbles, described dissolved oxygen sensing regulation device is according to the work of oxygen capacity regulation and control gas blower, guarantee that the dissolved oxygen mixed completely in Aerobic Pond water is greater than 2mg/L, the waste water after process is flowed out by overflow weir and rising pipe.
7. the rising pipe mixing Aerobic Pond completely connects the water distributor of second pond, and the precipitating sludge part sludge reflux of second pond is to deflector type anoxic anaerobic reation pool and mix Aerobic Pond completely, and a part is as excess sludge.
8. the water after sedimentation in secondary sedimentation tank process enters reflux formula BAF through overflow weir.
9. waste water enters the lower current area of reflux formula BAF by water inlet pipe, water distributor, the air that aeration tube produces and waste water cross generation biochemical reaction in filler, filler filters waste water simultaneously, waste water is by entering ascending zone after traverse baffle, biochemical reaction is there is in filler, filler filters waste water simultaneously, the mud that lower current area and ascending zone produce sinks to mud district, emitted by the mud discharging valve bottom mud district, the water after the process of reflux formula BAF enters reuse after clean water basin by overfalling weir.
10. ozone oxidation settling tank, deflector type anoxic anaerobic reation pool, completely mix Aerobic Pond, second pond and reflux formula BAF produce excess sludge dehydration after outward transport.
The invention has the beneficial effects as follows: structure of the present invention is simple, and cost is lower, has reasonable depth effect, convenient management to chemimechanical pulp wastewater treatment.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of embodiment of the present invention strengthening air flotation pool.
In Fig. 1: 1. strengthen air flotation pool, 1-1. strengthens air flotation pool water inlet pipe, 1-2. silt particle district, 1-3. mixing zone, 1-4. catchment area, 1-5. Ji Zhaqu, 1-6. strengthens air flotation pool aeration plate, 1-7. strengthens air flotation pool water distribution branch pipe, 1-8. gas blower and gas meter, and 1-9. strengthens air flotation pool triphase separator, 1-10. overfalling weir, 1-11. dreg scraper, 1-12. scum silica frost groove, 1-13. sediment discharge valve.
Fig. 2 is the structural representation of embodiment of the present invention ozone oxidation settling tank.
In Fig. 2: 2. ozone oxidation settling tank, 2-1. aeration mixing zone, 2-2. settling region, the ozonation aerated dish of 2-3., 2-4. water distribution branch pipe, 2-5. water inlet pipe, 2-6. ozone gas blower and gas meter, 2-7. ozonizer, 2-8. baffle plate, 2-9. ozone oxidation settling tank triphase separator, 2-10. ozone oxidation settling tank overfalling weir, 2-11. mud valve.
Fig. 3 is the structural representation of embodiment of the present invention deflector type anoxic anaerobic reation pool.
In Fig. 3: 3. deflector type anoxic anaerobic reation pool, 3-1. traverse baffle, 3-2. holds concurrently oxygen section, 3-3. anoxic section, 3-4. anaerobism section, 3-5. deflector type anoxic anaerobic reation pool water inlet pipe, 3-6. deflector type anoxic anaerobic reation pool triphase separator, 3-7. deflector type anoxic anaerobic reation pool overfalling weir, 3-8. mud discharging valve, 3-9. upper cover, 3-10. effuser.
Fig. 4 is the structural representation that the embodiment of the present invention mixes Aerobic Pond completely.
In Fig. 4: 4. mix Aerobic Pond completely, 4-1. mixes Aerobic Pond water inlet pipe completely, 4-2. water distribution pyrometric cone, and 4-3. aeration regulator control system, 4-4. mixes Aerobic Pond overflow weir completely.
Fig. 5 is the structural representation of embodiment of the present invention strengthening air flotation pool.
In Fig. 5: 5. reflux formula BAF, 5-1. lower current area, 5-2. ascending zone, 5-3. mud district, 5-4. reflux formula BAF water inlet pipe, 5-5. reflux formula BAF water distributor, 5-6. lower current area filler, 5-7. aeration tube, 5-8. traverse baffle, 5-9. ascending zone filler, 5-10. reflux formula BAF overfalling weir, 5-11. mud discharging valve.
Fig. 6 is the process flow sheet of the embodiment of the present invention.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Embodiment
As shown in Fig. 1 ~ Fig. 6, a kind of chemimechanical pulp Waste Water Treatment of the present invention, comprises wastewater equalization pond, strengthening air flotation pool 1, ozone oxidation settling tank 2, deflector type anoxic anaerobic reation pool 3, mixes Aerobic Pond 4, second pond and reflux formula BAF 5 completely; Described wastewater equalization pond, strengthening air flotation pool 1, ozone oxidation settling tank 2, deflector type anoxic anaerobic reation pool 3, completely mixing Aerobic Pond 4, second pond are communicated with successively with reflux formula BAF 5.
Described wastewater equalization pond comprises water inlet pipe and rising pipe, for regulating water quality and the water yield of chemical machinery pulp waste water.
Described strengthening air flotation pool 1 comprises water inlet pipe 1-1 and the rising pipe for discharging the rear water of process, and described strengthening air flotation pool is followed successively by silt particle district 1-2, mixing zone 1-3 and disengaging zone from bottom to up; Described disengaging zone comprises catchment area 1-4 and is positioned at Nei Jizha district, catchment area 1-5; Aeration plate 1-6 is provided with between the silt particle district 1-2 of described strengthening air flotation pool and mixing zone 1-3, the top of described aeration plate is provided with water distribution branch pipe 1-7, described water distribution branch pipe connects water inlet pipe 1-1, and described aeration plate 1-6 is connected with the blower fan 1-8 outside strengthening air flotation pool by aeration tube.Triphase separator 1-9 is provided with in described disengaging zone, described triphase separator 1-9 comprise flow deflector and be positioned at below flow deflector with flow deflector with the use of triangle guide ring, described triangle guide ring is arranged on the inwall of strengthening air flotation pool, the top of described flow deflector is identical with the shape of disengaging zone, the bottom of described flow deflector is horn-like, and the internal diameter of the bottom of described flow deflector is greater than the internal diameter of triangle guide ring; The top of described disengaging zone outer wall is provided with overfalling weir 1-10, and described overfalling weir 1-10 is connected with rising pipe; Described Ji Zha district 1-5 is laid with dreg scraper 1-11 and scum silica frost groove 1-12; When waste water overflows from the bottom up, water enters the bottom of flow deflector together with scum silica frost by triangle guide ring, and scum silica frost continues up to enter Ji Zha district 1-5, and water enters catchment area 1-4 by the gap between flow deflector and triangle guide ring; In order to the better effects if of wastewater treatment, described water distribution branch pipe 1-7 is arranged to concentric circles or cross shape, water distribution branch pipe has horizontal radiation water outlet; Further, described aeration plate is the pore type aeration plate being evenly provided with micropore; Due to water, sedimentary density difference, realize being separated under triphase separator effect; In order to discharge the throw out after process, bottom described strengthening air flotation pool, be provided with sediment discharge valve 1-13.
The rising pipe of described strengthening air flotation pool 1 is communicated with the water inlet pipe 2-5 of ozone oxidation settling tank 2.
Described ozone oxidation settling tank 2 comprises aeration mixing zone 2-1 and settling region 2-2, ozonation aerated dish 2-3 is provided with bottom aeration mixing zone, the top of described ozonation aerated dish is provided with water distribution branch pipe 2-4, described water distribution branch pipe 2-4 connects water inlet pipe 2-5, described ozonation aerated dish 2-3 is connected with the blower fan outside ozone oxidation settling tank by aeration tube, blower and pipeline is communicated with ozonizer 2-7; Baffle plate 2-8 is provided with in described settling region, the inwall of this baffle plate and settling tank forms the waste water runner entering settling region as waste water, the exit of settling region is provided with triphase separator 2-9, the outlet top of settling region is provided with overfalling weir 2-10, the tapered structure of settling region bottom design, is provided with mud valve 2-11 bottom settling region.
Described deflector type anoxic anaerobic reation pool 3 comprises the double oxygen section 3-2, anoxic section 3-3 and the anaerobism section 3-4 that are separated into by traverse baffle 3-1, described double oxygen section 3-2 head end is provided with the water inlet pipe 3-5 for feeding waste water, oxygen section 3-2 end of holding concurrently is communicated with anoxic section 3-3 head end, anoxic section 3-3 end is communicated with anaerobism section 3-4 head end, the bottom of described anoxic section 3-3 and anaerobism section 3-4 water inlet side traverse baffle is provided with the corner of 45 degree, the shock action produced when entering to avoid current, thus the effect playing buffering current and water distribution uniformity; Anaerobism section 3-4 end is provided with triphase separator 3-6 and overfalling weir 3-7, and overfalling weir 3-7 connects rising pipe; Described double oxygen section 3-2, anoxic section 3-3 and the tapered structure of anaerobism section 3-4 bottom design, pyramidal structure connects mud discharging valve 3-8; The upper cover 3-9 of the double oxygen section of described deflector type anoxic anaerobic reation pool, anoxic section and anaerobism section is designed to conical structure, and conical structure top is all provided with independently methane waste product effuser 3-10.
In the described Aerobic Pond 4 of mixing completely, middle and lower part is provided with water inlet pipe 4-1, and described water inlet pipe 4-1 bottom is provided with water distribution pyrometric cone 4-2; Described water distribution pyrometric cone 4-2 bottom is provided with aeration regulator control system 4-3, and described aeration regulator control system 4-3 comprises aeration plate, gas blower and dissolved oxygen sensing regulation device; Further, described aeration plate is the pore type aeration plate being evenly provided with micropore.Described aeration plate connects gas blower by aeration tube, gas blower is arranged on and mixes outside Aerobic Pond completely, mix the top of Aerobic Pond, waste water underwater completely and arrange dissolved oxygen sensing regulation device, described dissolved oxygen sensing regulation device is according to the work of oxygen capacity regulation and control gas blower; The described exit mixing Aerobic Pond is completely laid with overflow weir 4-4.
The described rising pipe mixing Aerobic Pond 4 completely connects second pond, is provided with sludge recirculation system bottom second pond, and a part of sludge reflux is to deflector type anoxic anaerobic reation pool 3 and mix in Aerobic Pond 4 completely, and a part is excess sludge.
Water after sedimentation in secondary sedimentation tank process enters the water inlet pipe 5-4 of reflux formula BAF through overflow weir.
The middle and upper part of described reflux formula BAF 5 is cylindrical, bottom is conical structure, comprises lower current area 5-1, ascending zone 5-2 and mud district 5-3; Described lower current area 5-1 is positioned at the middle part of the cylindrical structural of reflux formula BAF, for cylindrical structural, lower current area top is provided with water inlet pipe 5-4 and water distributor 5-5, filler 5-6 is provided with in the middle part of lower current area, lower current area bottom is provided with aeration tube 5-7, the bottom of described lower current area is provided with traverse baffle 5-8, and the longitudinal section of described traverse baffle 5-8 is horn-like; Described ascending zone 5-2 is positioned at the periphery of lower current area 5-1, the top of traverse baffle, and be provided with filler 5-9 in the middle part of ascending zone, bottom is provided with aeration tube, and the exit on ascending zone top is provided with overfalling weir 5-10; Described mud district 5-3 is positioned at the bottom of the bottom of reflux formula BAF, lower current area and ascending zone, and the bottom in mud district is provided with mud discharging valve 5-11.
Adopt above-mentioned chemimechanical pulp Waste Water Treatment to carry out a method for wastewater treatment, there are following steps:
1. chemical machinery pulp waste water enters wastewater equalization pond regulating water quality and the water yield by water inlet pipe.
2. then waste water enters the middle and lower part of strengthening air flotation pool disengaging zone by water inlet pipe 1-1; The aeration plate 1-6 be arranged in below strengthening air flotation pool water inlet pipe produces a large amount of tiny bubble makes the solids of waste water produce friction, removes other pollutents on solids; The tiny bubble that aeration plate 1-6 produces and supernatant adhere to and form mixture and rise under buoyancy, under the effect of strengthening air flotation pool triphase separator 1-9, mixture rises to Ji Zha district 1-5, and under the effect of dreg scraper 1-11, scum silica frost enters scum silica frost groove 1-12 and cleaned outward transport; Throw out sinks to the silt particle district 1-2 of strengthening air flotation pool bottom under gravity, is discharged by the sediment discharge valve 1-13 bottom strengthening air flotation pool; Water after separating treatment enters strengthening air flotation pool catchment area 1-4 under the effect of strengthening air flotation pool three-phase separation area flow deflector, is communicated with the water inlet pipe 2-5 of ozone oxidation settling tank by overfalling weir 1-10, rising pipe and pipe connecting.
3. waste water enters the middle and lower part of ozone oxidation settling tank 2 by ozone oxidation settling tank water inlet pipe 2-5 and water distribution branch pipe 2-4; The ozonation aerated dish 2-3 be arranged in below ozone oxidation settling tank water distribution branch pipe produces a large amount of tiny bubble makes the solids of waste water rub further, macromolecular substance in waste water is oxidized to the small-molecule substance being easy to absorb and adsorb simultaneously, waste water after oxygenolysis enters the waste water runner of settling region, and the triphase separator 2-9 of settling region realizes mud-water separation; Mud sinks to the bottom of ozone oxidation settling tank settling region 2-2 under gravity, is discharged by the mud valve 2-11 of bottom; Waste water is communicated with the water inlet pipe 3-5 of deflector type anoxic anaerobic reation pool by overfalling weir 2-10, rising pipe with pipe connecting.
4. waste water enters the bottom of deflector type anoxic anaerobic reation pool 3 by the hold concurrently water inlet pipe 3-5 of oxygen section of deflector type anoxic anaerobic reation pool; Waste water advances up and down along traverse baffle after entering deflector type anoxic anaerobic reation pool, successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section 3-2, anoxic section 3-3 and anaerobism section 3-4, mud in reaction tank moves along with the upper current downflow of waste water and the effect of biogas rising, the settlement action of the barrier effect of traverse baffle and mud self makes again the flow velocity of mud reduce, therefore a large amount of mud is all trapped within reaction tank, and the microorganism in reaction tank fully contacts with the organism in waste water.The suspended contaminant such as the fiber in waste water, carbohydrate and dissolved organic matter are hydrolyzed to organic acid by the double amphimicrobe of oxygen section 3-2, the heterotrophic bacterium of anoxic section 3-3 and anaerobism section 3-4, make larger molecular organics be decomposed into small organic molecule, insoluble organism changes into dissolved organic matter.
5. the waste water after anaerobic reaction realizes the separation of mud, water, methane gas at the triphase separator 3-6 that anaerobism section 3-4 end is provided with, mud sinks to the bottom of deflector type anoxic anaerobic reation pool under gravity, and unnecessary mud is discharged by the mud discharging valve 3-8 of bottom; The methane waste product that deflector type anoxic anaerobic reation pool produces collects discharge by reaction tank top effuser 3-10; Waste water is communicated with the water inlet pipe 4-1 mixing Aerobic Pond completely by overfalling weir, rising pipe and pipe connecting.
6. waste water enters the middle and lower part mixing Aerobic Pond 4 completely by water inlet pipe 4-1, water distribution uniformity under the effect of water distribution pyrometric cone 4-2, described aeration plate produces a large amount of microbubbles, described dissolved oxygen sensing regulation device is according to the work of oxygen capacity regulation and control gas blower, guarantee that the dissolved oxygen mixed completely in Aerobic Pond water is greater than 2mg/L, the waste water after process is flowed out by overflow weir 4-4 and rising pipe.
7. the rising pipe mixing Aerobic Pond completely connects the water distributor of second pond, and the precipitating sludge part sludge reflux of second pond is to deflector type anoxic anaerobic reation pool 3 and mix completely in Aerobic Pond 4, and a part is as excess sludge.
8. the water after sedimentation in secondary sedimentation tank process enters reflux formula BAF through overflow weir.
9. waste water enters the lower current area 5-1 of reflux formula BAF by water inlet pipe 5-4 and water distributor 5-5, the air that aeration tube 5-7 produces and waste water cross generation biochemical reaction in filler 5-6, filler 5-6 filters waste water simultaneously, waste water is by entering ascending zone 5-2 after traverse baffle 5-8, biochemical reaction is there is in filler 5-9, filler 5-9 filters waste water simultaneously, the mud that lower current area 5-1 and ascending zone 5-2 produces sinks to mud district 5-3, emitted by the mud discharging valve 5-11 bottom mud district, water after the process of reflux formula BAF enters reuse after clean water basin by overfalling weir 5-10.
10. transport outward after the excess sludge dehydration that ozone oxidation settling tank 2, deflector type anoxic anaerobic reation pool 3, completely mixing Aerobic Pond 4, second pond and reflux formula BAF 5 produce.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff can carry out various change and amendment completely in the scope not departing from this invention technological thought.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (2)
1. a chemimechanical pulp Waste Water Treatment, is characterized in that: comprise wastewater equalization pond, strengthening air flotation pool (1), ozone oxidation settling tank (2), deflector type anoxic anaerobic reation pool (3), mix Aerobic Pond (4), second pond and reflux formula BAF (5) completely;
Described equalizing tank comprises water inlet pipe and rising pipe, for regulating water quality and the water yield of chemical machinery pulp waste water;
Described strengthening air flotation pool (1) comprises water inlet pipe (1-1) and the rising pipe for discharging the rear water of process, and described strengthening air flotation pool is followed successively by silt particle district (1-2), mixing zone (1-3) and disengaging zone from bottom to up; Described disengaging zone comprises catchment area (1-4) and is positioned at Nei Jizha district, catchment area (1-5); Aeration plate (1-6) is provided with between the silt particle district (1-2) of described strengthening air flotation pool and mixing zone (1-3), the top of described aeration plate is provided with water distribution branch pipe (1-7), described water distribution branch pipe connects water inlet pipe (1-1), and described aeration plate (1-6) is connected with the blower fan outside strengthening air flotation pool by aeration tube; Triphase separator (1-9) is provided with in described disengaging zone, described triphase separator (1-9) comprise flow deflector and be positioned at below flow deflector with flow deflector with the use of triangle guide ring, described triangle guide ring is arranged on the inwall of strengthening air flotation pool, the top of described flow deflector is identical with the shape of disengaging zone, the bottom of described flow deflector is horn-like, and the internal diameter of the bottom of described flow deflector is greater than the internal diameter of triangle guide ring; The top of described disengaging zone outer wall is provided with overfalling weir (1-10), and described overfalling weir (1-10) is connected with rising pipe; Described Ji Zhaqu (1-5) is laid with dreg scraper (1-11) and scum silica frost groove (1-12); When waste water overflows from the bottom up, water enters the bottom of flow deflector together with scum silica frost by triangle guide ring, and scum silica frost continues up to enter Ji Zhaqu (1-5), and water enters catchment area (1-4) by the gap between flow deflector and triangle guide ring; In order to the better effects if of wastewater treatment, described water distribution branch pipe (1-7) is arranged to concentric circles or cross shape, water distribution branch pipe has horizontal radiation water outlet; Further, described aeration plate is the pore type aeration plate being evenly provided with micropore; Due to water, sedimentary density difference, realize being separated under triphase separator effect; In order to discharge the throw out after process, bottom described strengthening air flotation pool, be provided with sediment discharge valve (1-13);
Described ozone oxidation settling tank (2) comprises aeration mixing zone (2-1) and settling region (2-2), ozonation aerated dish (2-3) is provided with bottom aeration mixing zone, the top of described ozonation aerated dish is provided with water distribution branch pipe (2-4), described water distribution branch pipe (2-4) connects water inlet pipe (2-5), described ozonation aerated dish (2-3) is connected with the blower fan outside ozone oxidation settling tank by aeration tube, blower and pipeline is communicated with ozonizer (2-7); Baffle plate (2-8) is provided with in described settling region, the inwall of this baffle plate and settling tank forms the waste water runner entering settling region as waste water, the exit of settling region is provided with triphase separator (2-9), the outlet top of settling region is provided with overfalling weir (2-10), the tapered structure of settling region bottom design, is provided with mud valve (2-11) bottom settling region;
Described deflector type anoxic anaerobic reation pool (3) comprise be separated into by traverse baffle (3-1) double oxygen section (3-2), anoxic section (3-3) and anaerobism section (3-4), described double oxygen section (3-2) head end is provided with the water inlet pipe (3-5) for feeding waste water, oxygen section (3-2) end of holding concurrently is communicated with anoxic section (3-3) head end, and anoxic section (3-3) end is communicated with anaerobism section (3-4) head end; The bottom of the water inlet side traverse baffle of described anoxic section (3-3) and anaerobism section (3-4) is provided with the corner of 45 degree, the shock action produced when entering to avoid current, thus the effect playing buffering current and water distribution uniformity; Anaerobism section (3-4) end is provided with triphase separator (3-6) and overfalling weir (3-7), and overfalling weir (3-7) connects rising pipe; Described double oxygen section (3-2), anoxic section (3-3) and the tapered structure of anaerobism section (3-4) bottom design, pyramidal structure connects mud discharging valve (3-8); The upper cover (3-9) of the double oxygen section of described deflector type anoxic anaerobic reation pool, anoxic section and anaerobism section is designed to conical structure, and conical structure top is all provided with methane waste product effuser (3-10);
Described Aerobic Pond (4) the interior middle and lower part that mixes completely arranges water inlet pipe (4-1), and described water inlet pipe (4-1) bottom is provided with water distribution pyrometric cone (4-2); Described water distribution pyrometric cone (4-2) bottom is provided with aeration regulator control system (4-3), and described aeration regulator control system (4-3) comprises aeration plate, gas blower and dissolved oxygen sensing regulation device; Further, described aeration plate is the pore type aeration plate being evenly provided with micropore; Described aeration plate connects gas blower by aeration tube, gas blower is arranged on and mixes outside Aerobic Pond completely, mix the top of Aerobic Pond, waste water underwater completely and arrange dissolved oxygen sensing regulation device, described dissolved oxygen sensing regulation device is according to the work of oxygen capacity regulation and control gas blower; The described exit mixing Aerobic Pond is completely laid with overflow weir (4-4);
The described rising pipe mixing Aerobic Pond (4) completely connects second pond, and be provided with sludge recirculation system bottom second pond, a part of sludge reflux is to deflector type anoxic anaerobic reation pool (3) and mix in Aerobic Pond (4) completely;
Water after sedimentation in secondary sedimentation tank process enters the water inlet pipe (5-4) of reflux formula BAF through overflow weir;
The middle and upper part of described reflux formula BAF (5) is cylindrical, bottom is conical structure, comprises lower current area (5-1), ascending zone (5-2) and mud district (5-3); Described lower current area (5-1) is positioned at the middle part of the cylindrical structural of reflux formula BAF, for cylindrical structural, lower current area top is provided with water inlet pipe (5-4) and water distributor (5-5), filler (5-6) is provided with in the middle part of lower current area, lower current area bottom is provided with aeration tube (5-7), the bottom of described lower current area is provided with traverse baffle (5-8), and the longitudinal section of described traverse baffle (5-8) is horn-like; Described ascending zone (5-2) is positioned at the periphery of lower current area (5-1), the top of traverse baffle, filler (5-9) is provided with in the middle part of ascending zone, bottom is provided with aeration tube, and the exit on ascending zone top is provided with overfalling weir (5-10); Described mud district (5-3) is positioned at the bottom of the bottom of reflux formula BAF, lower current area and ascending zone, and the bottom in mud district is provided with mud discharging valve (5-11).
2. adopt chemimechanical pulp Waste Water Treatment as claimed in claim 1 to carry out a method for wastewater treatment, there are following steps:
1. chemical machinery pulp waste water enters wastewater equalization pond regulating water quality and the water yield by water inlet pipe;
2. then waste water enters the middle and lower part of strengthening air flotation pool disengaging zone by water inlet pipe (1-1); The aeration plate (1-6) be arranged in below strengthening air flotation pool water inlet pipe produces a large amount of tiny bubble makes the solids of waste water produce friction, removes other pollutents on solids; The tiny bubble that aeration plate (1-6) produces and supernatant adhere to and form mixture and rise under buoyancy, under the effect of strengthening air flotation pool triphase separator (1-9), mixture rises to Ji Zhaqu (1-5), under the effect of dreg scraper (1-11), scum silica frost enters scum silica frost groove (1-12) and cleaned outward transport; Throw out sinks to the silt particle district (1-2) of strengthening air flotation pool bottom under gravity, is discharged by the sediment discharge valve (1-13) bottom strengthening air flotation pool; Water after separating treatment enters strengthening air flotation pool catchment area (1-4) under the effect of strengthening air flotation pool three-phase separation area flow deflector, is communicated with the water inlet pipe (2-5) of ozone oxidation settling tank by overfalling weir (1-10), rising pipe with pipe connecting;
3. waste water enters the middle and lower part of ozone oxidation settling tank (2) by ozone oxidation settling tank water inlet pipe (2-5) and water distribution branch pipe (2-4); The ozonation aerated dish (2-3) be arranged in below ozone oxidation settling tank water distribution branch pipe produces a large amount of tiny bubble makes the solids of waste water rub further, macromolecular substance in waste water is oxidized to the small-molecule substance being easy to absorb and adsorb simultaneously, waste water after oxygenolysis enters the waste water runner of settling region, and the triphase separator (2-9) of settling region realizes mud-water separation; Mud sinks to the bottom of ozone oxidation settling tank settling region (2-2) under gravity, is discharged by the mud valve (2-11) of bottom; Waste water is communicated with the water inlet pipe (3-5) of deflector type anoxic anaerobic reation pool by overfalling weir (2-10), rising pipe with pipe connecting;
4. waste water enters the bottom of deflector type anoxic anaerobic reation pool (3) by the hold concurrently water inlet pipe (3-5) of oxygen section of deflector type anoxic anaerobic reation pool; Advance up and down along traverse baffle (3-1) after waste water enters deflector type anoxic anaerobic reation pool, successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section (3-2), anoxic section (3-3) and anaerobism section (3-4), mud in reaction tank moves along with the upper current downflow of waste water and the effect of biogas rising, the barrier effect of traverse baffle (3-1) and the settlement action of mud self make again the flow velocity of mud reduce, therefore a large amount of mud is all trapped within reaction tank, and the microorganism in reaction tank fully contacts with the organism in waste water; The suspended contaminant such as the starch in waste water, fiber, carbohydrate and dissolved organic matter are hydrolyzed to organic acid by the heterotrophic bacterium of the amphimicrobe of oxygen section (3-2), anoxic section (3-3) and the anaerobism section (3-4) held concurrently, make larger molecular organics be decomposed into small organic molecule, insoluble organism changes into dissolved organic matter;
5. the waste water after anaerobic reaction realizes the separation of mud, water, methane gas at the triphase separator (3-6) that anaerobism section (3-4) end is provided with, mud sinks to the bottom of deflector type anoxic anaerobic reation pool under gravity, and unnecessary mud is discharged by the mud discharging valve (3-8) of bottom; The methane waste product that deflector type anoxic anaerobic reation pool produces collects discharge by reaction tank top effuser (3-10); Waste water is communicated with the water inlet pipe mixing Aerobic Pond (4) completely by overfalling weir, rising pipe and pipe connecting;
6. waste water enters by water inlet pipe (4-1) middle and lower part mixing Aerobic Pond (4) completely, water distribution uniformity under the effect of water distribution pyrometric cone (4-2), described aeration plate is the pore type aeration plate being evenly provided with micropore, produce a large amount of microbubbles, described dissolved oxygen sensing regulation device is according to the work of oxygen capacity regulation and control gas blower, guarantee that the dissolved oxygen mixed completely in Aerobic Pond water is greater than 2mg/L, the waste water after process is flowed out by overflow weir (4-4) and rising pipe;
7. the rising pipe mixing Aerobic Pond (4) completely connects the water distributor of second pond, the precipitating sludge part sludge reflux of second pond is to deflector type anoxic anaerobic reation pool (3) and mix in Aerobic Pond (4) completely, and a part is as excess sludge;
8. the water after sedimentation in secondary sedimentation tank process enters reflux formula BAF (5) through second pond overflow weir;
9. waste water enters the lower current area (5-1) of reflux formula BAF by water inlet pipe (5-4) and water distributor (5-5), the air that aeration tube (5-7) produces and waste water cross generation biochemical reaction in filler (5-6), filler (5-6) filters waste water simultaneously, waste water enters ascending zone (5-2) by after traverse baffle (5-8), biochemical reaction is there is in filler (5-9), filler (5-9) filters waste water simultaneously, the mud that lower current area (5-1) and ascending zone (5-2) produce sinks to mud district (5-3), emitted by the mud discharging valve (5-11) bottom mud district, water after the process of reflux formula BAF enters reuse after clean water basin by overfalling weir (5-10),
10. ozone oxidation settling tank (2), deflector type anoxic anaerobic reation pool (3), mix outward transport after excess sludge dehydration that Aerobic Pond (4), second pond and reflux formula BAF (5) produce completely.
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| CN105645680A (en) * | 2016-01-11 | 2016-06-08 | 常州大学 | Rabbit processing wastewater treatment plant |
| CN108298688A (en) * | 2018-04-12 | 2018-07-20 | 北京昊业同宇科技有限公司 | The processing unit and method of high-concentration sewage |
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| CN110066070A (en) * | 2019-04-30 | 2019-07-30 | 秾源科技(北京)有限公司 | A kind of method and application using residual hydrogen peroxide autoxidation treatment of pulp waste liquid |
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| CN105060611A (en) * | 2015-07-17 | 2015-11-18 | 常州大学 | Advanced treatment system for cinnamic acid production wastewater |
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| CN109851183A (en) * | 2019-01-08 | 2019-06-07 | 长江师范学院 | A kind of oil field mud processing unit and oil field mud processing method |
| CN110066070A (en) * | 2019-04-30 | 2019-07-30 | 秾源科技(北京)有限公司 | A kind of method and application using residual hydrogen peroxide autoxidation treatment of pulp waste liquid |
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| CN111253010A (en) * | 2020-02-25 | 2020-06-09 | 常州大学 | Straight-flow type waste water pretreatment device for automobile repair shop |
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| CN104743742B (en) | 2016-08-17 |
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Effective date of registration: 20201113 Address after: No.008 Zijing Avenue, Chahe Town Industrial Park, Pizhou City, Xuzhou City, Jiangsu Province Patentee after: Jiangsu Yikun Medical Technology Co.,Ltd. Address before: Gehu Lake Road Wujin District 213164 Jiangsu city of Changzhou province No. 1 Patentee before: CHANGZHOU University |