CN112429871A - Gray board paper sewage treatment system - Google Patents

Gray board paper sewage treatment system Download PDF

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Publication number
CN112429871A
CN112429871A CN202011204901.4A CN202011204901A CN112429871A CN 112429871 A CN112429871 A CN 112429871A CN 202011204901 A CN202011204901 A CN 202011204901A CN 112429871 A CN112429871 A CN 112429871A
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CN
China
Prior art keywords
tank
sedimentation
inverted cone
sewage
settling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011204901.4A
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Chinese (zh)
Inventor
黎志强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kaiping Yidafeng Paper Co ltd
Original Assignee
Kaiping Yidafeng Paper Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kaiping Yidafeng Paper Co ltd filed Critical Kaiping Yidafeng Paper Co ltd
Priority to CN202011204901.4A priority Critical patent/CN112429871A/en
Publication of CN112429871A publication Critical patent/CN112429871A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • C02F2103/26Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
    • C02F2103/28Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry

Abstract

The invention relates to the technical field of papermaking, and discloses a gray paperboard sewage treatment system which comprises a fiber recovery device, a sedimentation treatment tank, a dissolved air tank, an air flotation sedimentation tank and a sedimentation tank, wherein the fiber recovery device is provided with a sewage inlet and a sewage filtering outlet, the dissolved air tank is provided with an air distribution pipe aeration pipe, the air flotation sedimentation tank is provided with a jet aerator and a scum collector, the sedimentation tank is provided with a sedimentation water cavity, and the head end of the sedimentation treatment tank is provided with an adjusting inlet groove which is provided with a flocculating agent feeding port and a first water inlet connected with the sewage filtering outlet; the bottom of the sedimentation treatment tank is provided with a first inverted cone-shaped groove, and the tail end of the first inverted cone-shaped groove is provided with a first water drainage port; the head end of the dissolved air tank is provided with a second water inlet connected with the first water outlet, and sewage overflows from the tail end of the dissolved air tank to the head end of the air floatation sedimentation tank; the bottom of the air floatation sedimentation tank is provided with a second inverted cone-shaped groove, and the tail end of the air floatation sedimentation tank is provided with a second water outlet; the sedimentation tank comprises a third water inlet arranged at the head end and connected with the second water outlet and a third water outlet arranged at the tail end; the invention can effectively reduce the content of suspended matters in the sewage.

Description

Gray board paper sewage treatment system
Technical Field
The invention relates to the technical field of papermaking, in particular to a gray board sewage treatment system.
Background
In the papermaking industry, the water pollution is the most serious, the water discharge is large, generally more than 300 tons of water is used for each ton of pulp and paper, the content of organic matters in the papermaking sewage is high, the Biochemical Oxygen Demand (BOD) is high, and more suspended matters (SS) exist, and the production of the gray board paper recycles some pit-clamped waste paper, boxboard waste paper and the like as raw materials, so the suspended matters in the papermaking sewage mainly comprise fine plant fibers, coating materials in coated paper, fillers and the like; however, most of the discharged papermaking wastewater (white water) is recycled in the existing paper mill due to strict environmental requirements, and for the traditional wastewater treatment equipment, the recycled papermaking wastewater contains a large amount of fine fibers, coating, fillers and the like, so that the operation of the original equipment is influenced.
Disclosure of Invention
The invention aims to provide a gray board sewage treatment system capable of effectively reducing the content of suspended matters.
In order to achieve the aim, the invention provides a gray board paper sewage treatment system which comprises a fiber recovery device, a sedimentation treatment tank, a gas dissolving tank, an air flotation sedimentation tank and a sedimentation tank which are connected in sequence,
the fiber recovery device is provided with a sewage inlet, a filtered sewage outlet and a fiber recovery cavity for recovering fibers, the upper part of the head end of the sedimentation treatment tank is provided with an adjusting inlet groove, the adjusting inlet groove is provided with a flocculating agent throwing port and a first water inlet connected with the filtered sewage outlet, and sewage in the adjusting inlet groove overflows into the sedimentation treatment tank;
a plurality of first inverted cone-shaped grooves are uniformly distributed at the bottom of the sedimentation treatment tank along the length direction of the sedimentation treatment tank, a drain valve is arranged at the bottom of each first inverted cone-shaped groove, the bottom of each first inverted cone-shaped groove is connected with a first sedimentation collecting tank, and a first drain outlet is arranged at the upper part of the tail end of the sedimentation treatment tank;
a second water inlet connected with the first water discharge port is formed in the bottom of the head end of the dissolved air tank, an aerator pipe is distributed at the bottom of the dissolved air tank and is connected with a compressed air source, and sewage in the dissolved air tank overflows from the tail end of the dissolved air tank to the head end of the air flotation sedimentation tank;
a scum collector is arranged on the liquid level of the air flotation sedimentation tank, a jet aerator is arranged in the air flotation sedimentation tank, a plurality of second inverted cone-shaped grooves are uniformly distributed at the bottom of the air flotation sedimentation tank along the length direction of the air flotation sedimentation tank, a drain valve is arranged at the bottom of each second inverted cone-shaped groove, the bottom of each second inverted cone-shaped groove is connected with a second sedimentation collecting tank, and a second water outlet is arranged at the bottom of the tail end of the air flotation sedimentation tank;
the first end upper portion in settling pond be equipped with the second outlet the third inlet of connection, the terminal bottom in settling pond is equipped with the third outlet, be equipped with a plurality of spoilers of arranging along its length on the inner chamber in settling pond, it is a plurality of the spoilers will a plurality of settling water chambers are separated into to the inner chamber in settling pond, each the inlet end upper end in settling water chamber all is equipped with the weir of intaking.
As a preferable scheme of the invention, a sludge concentration detector is arranged in the first inverted cone-shaped groove, and a sludge concentration detector is arranged in the second inverted cone-shaped groove.
As a preferable scheme of the invention, the first precipitation collecting tank is connected with a sludge recycling system through a sludge pump; the second precipitation collecting tank is connected with a sludge recycling system through a sludge pump.
As a preferable scheme of the invention, the jet aerator is arranged at the bottom of the air flotation sedimentation tank and above the second inverted cone-shaped groove.
As a preferable scheme of the invention, the upper part of the side wall of the head end of the settling pond is provided with the water inlet weir, and the upper parts of the spoilers are provided with the water inlet weir.
As a preferable scheme of the present invention, there are 30 first inverse tapered slots, the height of the first inverse tapered slot is 2m, and the diameter of the top surface of the first inverse tapered slot is 2 m; the length of the sedimentation treatment tank is 75m, the width of the sedimentation treatment tank is 3m, and the height of the sedimentation treatment tank is 1.5 m.
As a preferable scheme of the present invention, there are 23 second inverse tapered slots, the height of the second inverse tapered slot is 1.2m, and the diameter of the top surface of the second inverse tapered slot is 1.5 m; the length of the air flotation sedimentation tank is 16m, the width of the air flotation sedimentation tank is 6m, and the height of the air flotation sedimentation tank is 1.7 m.
As a preferable scheme of the present invention, 6 settling water chambers are arranged in the settling tank, the length of each settling water chamber is 6m, the width of each settling water chamber is 5.5m, and the height of each settling water chamber is 3.2 m.
In a preferred embodiment of the present invention, the fiber separation device is a cross-sieve type solid-liquid separator.
Preferably, the drain valve of the first reverse taper groove and the drain valve of the second reverse taper groove are both electric drain valves.
Compared with the prior art, the gray board sewage treatment system provided by the embodiment of the invention has the beneficial effects that:
the sewage in the embodiment of the invention is primarily filtered by the fiber recovery device, and the filtered fiber is sent to a pulping workshop for recycling; then the sewage enters a sedimentation treatment tank to be fully mixed with a flocculating agent and sedimentated, so that the sedimentation effect of the sewage is improved, and the sewage is conveniently sedimentated and discharged through a first inverted cone-shaped groove; then the sewage enters an air dissolving tank, compressed air generates micro bubbles through an aerator pipe and is mixed with the sewage, so that part of the air is dissolved in the sewage, and other air is mixed in the sewage in the form of the micro bubbles; then, enabling the sewage wrapped with the micro-bubbles to enter an air floatation sedimentation tank, ensuring that the micro-bubbles can be fully diffused to the whole air floatation sedimentation tank in the sewage inflow process, thereby avoiding an air floatation dead angle area, simultaneously carrying out secondary aeration through a jet aerator, enabling the micro-bubbles to be adhered to suspended matters as carriers, enabling the suspended matters to float up to a liquid level and form foams, scraping the foams through a scum collector, purifying the sewage, and depositing heavy sediments in the air floatation sedimentation tank to a second inverted cone-shaped groove, so that the sediments are conveniently discharged; finally, the treated sewage enters a settling tank, a plurality of settling water cavities are arranged in the settling tank, and the clarity of the treated sewage can be further improved by passing through a water inlet weir before entering the settling water cavities, so that the clarity of the treated water can be improved; therefore, the invention has the advantages of low power consumption, no need of more human resources, reduced operation cost, high surface load and volume load of the whole treatment system, high purification efficiency and capability of effectively reducing the content of suspended matters in the sewage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a schematic structural diagram of a gray board sewage treatment system provided by the present invention;
in the figure, 1 is a fiber recovery device; 11 is a sewage inlet; 12 is a sewage filtering outlet; 13 is a fiber recovery cavity; 2 is a sedimentation treatment tank; 21 is a regulating inlet groove; 3 is a gas dissolving pool; 31 is an aeration pipe; 4, an air floatation sedimentation tank; 41 is a scum collector; 42 is a jet aerator; 5 is a settling tank; 51 is a spoiler; 52 is a clear water settling chamber; 53 is a water inlet weir; 54 is a clean water pump; 6 is a first reverse taper groove; 7 is a first precipitation collecting tank; 8 is a second inverse taper groove; 9 is a second precipitation collecting tank; and 10 is a sludge pump.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
As shown in FIG. 1, a gray board sewage treatment system according to a preferred embodiment of the present invention comprises a fiber recovery device 1, a sedimentation treatment tank 2, a dissolved air tank 3, an air flotation sedimentation tank 4 and a sedimentation tank 5 which are connected in sequence,
the fiber recovery device 1 is provided with a sewage inlet 11, a filtered sewage outlet 12 and a fiber recovery cavity 13 for recovering fibers, the upper part of the head end of the sedimentation treatment tank 2 is provided with an adjusting inlet groove 21, the adjusting inlet groove 21 is provided with a flocculating agent feeding port and a first water inlet connected with the filtered sewage outlet 12, and sewage in the adjusting inlet groove 21 overflows into the sedimentation treatment tank 2; the fiber recovery device 1 is preferably an inclined screen type solid-liquid separator, redundant sewage of the grey board paper pulping and papermaking production line is sent to the sewage inlet 11 through a pump, and the fibers in the fiber recovery cavity 13 are sent back to the grey board paper pulping and papermaking production line for recycling;
a plurality of first inverted cone-shaped grooves 6 are uniformly distributed at the bottom of the sedimentation treatment tank 2 along the length direction of the sedimentation treatment tank, a drain valve is arranged at the bottom of each first inverted cone-shaped groove 6, the bottom of each first inverted cone-shaped groove 6 is connected with a first sedimentation collecting tank 7, and a first drain outlet is arranged at the upper part of the tail end of the sedimentation treatment tank 2;
a second water inlet connected with the first water discharge port is formed in the bottom of the head end of the dissolved air tank 3, an aeration pipe 31 is distributed at the bottom of the dissolved air tank 3, the aeration pipe 31 is connected with a compressed air source, and sewage in the dissolved air tank 3 overflows from the tail end of the dissolved air tank 3 to the head end of the air flotation sedimentation tank 4;
a scum collector 41 is arranged on the liquid level of the air flotation sedimentation tank 4, a jet aerator 42 is arranged in the air flotation sedimentation tank 4, a plurality of second inverted cone-shaped grooves 8 are uniformly distributed at the bottom of the air flotation sedimentation tank 4 along the length direction of the air flotation sedimentation tank, a blow-down valve is arranged at the bottom of each second inverted cone-shaped groove 8, the bottom of each second inverted cone-shaped groove 8 is connected with a second sedimentation collecting tank 9, and a second water outlet is arranged at the bottom of the tail end of the air flotation sedimentation tank 4;
the first end upper portion of settling pond 5 be equipped with the second outlet the third inlet of connection, the terminal bottom of settling pond 5 is equipped with the third outlet, be equipped with a plurality of spoilers 51 of arranging along its length on the inner chamber of settling pond 5, it is a plurality of spoiler 51 will a plurality of settling pond 52 are separated into to the inner chamber of settling pond 5, each the weir 53 of intaking is all equipped with on the end of settling pond 52, and the end and the clean water pump of settling pond 5 are connected, carry out the retrieval and utilization with the water in the settling pond 5. Wherein, the blowoff valve of the first reverse taper groove 6 and the blowoff valve of the second reverse taper groove 8 are both electric blowoff valves.
The sewage in the embodiment of the invention is primarily filtered by the fiber recovery device 1, and the filtered fiber is sent to a pulping workshop for recycling; then the sewage enters a sedimentation treatment tank 2 to be fully mixed with a flocculating agent and sedimentated, so that the sedimentation effect of the sewage is improved, and the sewage is conveniently sedimentated and discharged through a first reverse cone-shaped tank 6; then the sewage enters a dissolved air pool 3, compressed air generates micro bubbles through an aeration pipe 31 to be mixed with the sewage, so that part of the air is dissolved in the sewage, and other air is mixed in the sewage in the form of the micro bubbles; then, the sewage wrapped with the micro-bubbles enters the air flotation sedimentation tank 4, the micro-bubbles can be fully diffused to the whole air flotation sedimentation tank 4 in the sewage flowing process, so that an air flotation dead angle area is avoided, meanwhile, secondary aeration is carried out through the jet aerator 42, the micro-bubbles can be used as carriers to adhere to suspended matters, the suspended matters float up to the liquid level and form foams, the foams are scraped through the scum collector 41, the sewage is purified, and heavy sediments in the air flotation sedimentation tank 4 can be deposited to the second inverted cone-shaped groove 8, so that the sediments are conveniently discharged; finally, the treated sewage enters a settling tank 5, a plurality of settling water cavities 52 are arranged in the settling tank 5, and the clarity of the water can be further improved by passing through a water inlet weir 53 before entering the settling water cavities 52, so that the clarity of the treated water can be improved; therefore, the invention has the advantages of low power consumption, no need of more human resources, reduced operation cost, high surface load and volume load of the whole treatment system, high purification efficiency and capability of effectively reducing the content of suspended matters in the sewage.
Illustratively, a sludge concentration detector is arranged in the first inverse cone-shaped groove 6, the sludge concentration detector can detect the precipitation amount of each first inverse cone-shaped groove 6 in real time, and when the precipitation amount in the first inverse cone-shaped groove 6 reaches a required discharge value, a drain valve on the first inverse cone-shaped groove 6 is opened to discharge the precipitation; be equipped with mud concentration detection appearance in the second inverse cone shape groove 8, can real-time detection each second inverse cone shape groove 8's precipitation volume through mud concentration detection appearance, when the precipitation volume in the second inverse cone shape groove 8 reaches and needs the discharge value, through opening the blowoff valve on the second inverse cone shape groove 8 in order to discharge the sediment. Of course in other embodiments the blowdown valve on the first reverse taper 6 and the blowdown valve on the second reverse taper 8 are capable of timed drain.
Illustratively, the first sedimentation and collection tank 7 is connected with a sludge recycling system through a sludge pump 10; the second sedimentation collection tank 9 is connected to a sludge recycling system via a sludge pump 10, so that the sediments in the first sedimentation collection tank 7 and the second sedimentation collection tank 9 are treated.
Illustratively, the jet aerator 42 is arranged at the bottom of the air flotation sedimentation tank 4 and above the second inverted cone-shaped groove 8, so as to ensure the aeration effect of the air flotation sedimentation tank 4 and not influence the collection of the sediment in the second inverted cone-shaped groove 8.
Illustratively, the upper portion of the sidewall of the head end of the settling pond 5 is provided with one of the water inlet weirs 53, and the upper portion of the spoiler 51 is provided with one of the water inlet weirs 53, so that the sewage to be treated enters the water inlet weir 53 when entering each settling water cavity 52, and the water can be primarily filtered, settled and buffered, thereby improving the treatment effect.
In the present embodiment, there are 30 first inverse tapered slots 6, the height of the first inverse tapered slot 6 is 2m, and the diameter of the top surface of the first inverse tapered slot 6 is 2 m; the length of the sedimentation treatment tank 2 is 75m, the width of the sedimentation treatment tank 2 is 3m, and the height of the sedimentation treatment tank 2 is 1.5 m; 23 second inverse tapered grooves 8 are arranged, the height of each second inverse tapered groove 8 is 1.2m, and the diameter of the top surface of each second inverse tapered groove 8 is 1.5 m; the length of the air flotation sedimentation tank 4 is 16m, the width of the air flotation sedimentation tank 4 is 6m, and the height of the air flotation sedimentation tank 4 is 1.7 m; 6 settling water cavities 52 are arranged in the settling pond 5, the length of each settling water cavity 52 is 6m, the width of each settling water cavity 52 is 5.5m, and the height of each settling water cavity 52 is 3.2 m; the length of the sedimentation treatment tank 2 is as long as possible, and the treatment capacity and treatment effect of the whole gray board paper sewage treatment system can be improved.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (10)

1. A gray board paper sewage treatment system is characterized by comprising a fiber recovery device, a sedimentation treatment tank, a dissolved air tank, an air flotation sedimentation tank and a sedimentation tank which are connected in sequence,
the fiber recovery device is provided with a sewage inlet, a filtered sewage outlet and a fiber recovery cavity for recovering fibers, the upper part of the head end of the sedimentation treatment tank is provided with an adjusting inlet groove, the adjusting inlet groove is provided with a flocculating agent throwing port and a first water inlet connected with the filtered sewage outlet, and sewage in the adjusting inlet groove overflows into the sedimentation treatment tank;
a plurality of first inverted cone-shaped grooves are uniformly distributed at the bottom of the sedimentation treatment tank along the length direction of the sedimentation treatment tank, a drain valve is arranged at the bottom of each first inverted cone-shaped groove, the bottom of each first inverted cone-shaped groove is connected with a first sedimentation collecting tank, and a first drain outlet is arranged at the upper part of the tail end of the sedimentation treatment tank;
a second water inlet connected with the first water discharge port is formed in the bottom of the head end of the dissolved air tank, an aerator pipe is distributed at the bottom of the dissolved air tank and is connected with a compressed air source, and sewage in the dissolved air tank overflows from the tail end of the dissolved air tank to the head end of the air flotation sedimentation tank;
a scum collector is arranged on the liquid level of the air flotation sedimentation tank, a jet aerator is arranged in the air flotation sedimentation tank, a plurality of second inverted cone-shaped grooves are uniformly distributed at the bottom of the air flotation sedimentation tank along the length direction of the air flotation sedimentation tank, a drain valve is arranged at the bottom of each second inverted cone-shaped groove, the bottom of each second inverted cone-shaped groove is connected with a second sedimentation collecting tank, and a second water outlet is arranged at the bottom of the tail end of the air flotation sedimentation tank;
the first end upper portion in settling pond be equipped with the second outlet the third inlet of connection, the terminal bottom in settling pond is equipped with the third outlet, be equipped with a plurality of spoilers of arranging along its length on the inner chamber in settling pond, it is a plurality of the spoilers will a plurality of settling water chambers are separated into to the inner chamber in settling pond, each the inlet end upper end in settling water chamber all is equipped with the weir of intaking.
2. The gray board paper sewage treatment system of claim 1, wherein a sludge concentration detector is arranged in the first inverted cone-shaped groove, and a sludge concentration detector is arranged in the second inverted cone-shaped groove.
3. The gray board paper sewage treatment system of claim 1, wherein the first settling collection tank is connected to a sludge recycling system through a sludge pump; the second precipitation collecting tank is connected with a sludge recycling system through a sludge pump.
4. The gray board sewage treatment system of claim 1, wherein the jet aerator is disposed at the bottom of the air flotation sedimentation tank above the second inverted cone-shaped tank.
5. The gray board waste water treatment system of claim 1, wherein said inlet weir is disposed on an upper portion of a side wall of said head end of said settling tank, and said inlet weir is disposed on an upper portion of each of said spoilers.
6. The gray board sewage treatment system of claim 1, wherein there are 30 first inverted cone-shaped grooves, the height of the first inverted cone-shaped groove is 2m, and the diameter of the top surface of the first inverted cone-shaped groove is 2 m; the length of the sedimentation treatment tank is 75m, the width of the sedimentation treatment tank is 3m, and the height of the sedimentation treatment tank is 1.5 m.
7. The gray board sewage treatment system of claim 1, wherein there are 23 second inverted cone-shaped grooves, the height of the second inverted cone-shaped grooves is 1.2m, and the diameter of the top surface of the second inverted cone-shaped grooves is 1.5 m; the length of the air flotation sedimentation tank is 16m, the width of the air flotation sedimentation tank is 6m, and the height of the air flotation sedimentation tank is 1.7 m.
8. The gray board paper sewage treatment system of claim 1, wherein 6 of said settling water chambers are provided in said settling tank, said settling water chambers have a length of 6m, said settling water chambers have a width of 5.5m, and said settling water chambers have a height of 3.2 m.
9. The gray board wastewater treatment system of claim 1, wherein said fiber separation device is a screen-type solid-liquid separator.
10. The gray board waste water treatment system of claim 1, wherein the blowdown valve of the first inverted cone shaped tank and the blowdown valve of the second inverted cone shaped tank are both electrically powered blowdown valves.
CN202011204901.4A 2020-11-02 2020-11-02 Gray board paper sewage treatment system Pending CN112429871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011204901.4A CN112429871A (en) 2020-11-02 2020-11-02 Gray board paper sewage treatment system

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Application Number Priority Date Filing Date Title
CN202011204901.4A CN112429871A (en) 2020-11-02 2020-11-02 Gray board paper sewage treatment system

Publications (1)

Publication Number Publication Date
CN112429871A true CN112429871A (en) 2021-03-02

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CN202011204901.4A Pending CN112429871A (en) 2020-11-02 2020-11-02 Gray board paper sewage treatment system

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201198461Y (en) * 2008-04-01 2009-02-25 宋佃凤 Zero discharge apparatus for papermaking waste water
CN202054680U (en) * 2011-05-11 2011-11-30 无锡奔月环保设备有限公司 Sedimentation and bubble floatation integrated water treatment equipment
CN208250006U (en) * 2018-03-22 2018-12-18 杭州水处理技术研究开发中心有限公司 A kind of high efficient aeration sedimentation integrated device
CN211056758U (en) * 2019-10-30 2020-07-21 浙江泽林瑞沃环境科技有限公司 Phosphorus removal device based on air flotation process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201198461Y (en) * 2008-04-01 2009-02-25 宋佃凤 Zero discharge apparatus for papermaking waste water
CN202054680U (en) * 2011-05-11 2011-11-30 无锡奔月环保设备有限公司 Sedimentation and bubble floatation integrated water treatment equipment
CN208250006U (en) * 2018-03-22 2018-12-18 杭州水处理技术研究开发中心有限公司 A kind of high efficient aeration sedimentation integrated device
CN211056758U (en) * 2019-10-30 2020-07-21 浙江泽林瑞沃环境科技有限公司 Phosphorus removal device based on air flotation process

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