CN102311212A - Method for processing wastewater from papermaking with waste paper - Google Patents
Method for processing wastewater from papermaking with waste paper Download PDFInfo
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- CN102311212A CN102311212A CN201110234577A CN201110234577A CN102311212A CN 102311212 A CN102311212 A CN 102311212A CN 201110234577 A CN201110234577 A CN 201110234577A CN 201110234577 A CN201110234577 A CN 201110234577A CN 102311212 A CN102311212 A CN 102311212A
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Abstract
The invention which provides a method for processing wastewater from papermaking with waste paper relates to the environmental protection field. The method solves technical problems of high COD content in the wastewater from papermaking with the waste paper and high processing cost in the prior art. The method comprises the following steps: introducing the wastewater from papermaking with the waste paper into a water inlet barrier; introducing the wastewater which is processed through the water inlet barrier into an equalizing tank; adding an acid to the equalizing tank to adjust the pH value; lifting the wastewater in the equalizing tank to an anaerobic hydrolysis tank through a pump for anaerobic hydrolysis tank; introducing the anaerobically hydrolyzed wastewater into a first sedimentation tank for sedimentation; introducing a supernatant into a deep air floatation tank for air floatation processing after deposition; introducing the air floatation processed supernatant into a biochemical tank which is provided with an aeration apparatus; introducing the supernatant which is processed through the biochemical tank into a second sedimentation tank for sedimentation; introducing the supernatant after sedimentation into a reverse ore sand filter tank for filtering; and recycling water after going through the reverse ore sand filter tank. The wastewater from papermaking with the waste paper, which is processed with the method of the invention, has the advantages of obvious reduction of the COD value and low cost.
Description
Technical field
The invention belongs to the environmental protection field, relate in particular to the method for wastewater treatment of a kind of sewage water treatment method, particularly a kind of regenerated papermaking.
Background technology
Traditional waste paper making wastewater treatment scheme is following: trash rack → deposition → biochemistry → deposition.This technology is used for the shortcoming that waste paper making wastewater handles: just need dosing when 1) waste water gets into settling tank, cause to add that dose is big, cost for wastewater treatment is high.2) there is not settling tank behind the hydrolysis anaerobic pond, because COD (COD) height in the waste water of this moment, thereby the biochemical treatment of back segment caused very big difficulty.
Summary of the invention
To the defective that exists in the above-mentioned prior art, it is low that technical problem to be solved by this invention provides a kind of processing cost, and the COD in the waste paper making wastewater reduces the method for wastewater treatment of tangible regenerated papermaking.
A kind of method of wastewater treatment that adopts regenerated papermaking of the present invention; Comprise a step of the waste water of regenerated papermaking being introduced the water inlet barrier; Waste water is handled the back through the water inlet barrier and is introduced an equalizing tank, in described equalizing tank, adds acid for adjusting pH value, makes pH value in the equalizing tank between 8-8.5; Then the waste water in the equalizing tank is promoted to the hydrolysis anaerobic pond anaerobism that is hydrolyzed through pump; Waste water after the hydrolysis anaerobism is introduced one first settling tank and is precipitated, and post precipitation is introduced a dull air flotation pool deep layer air flotation pool with the supernatant in first settling tank and carried out the air supporting processing, after air supporting is handled the supernatant in the deep layer air flotation pool is introduced a biochemistry pool; Be provided with an aerating apparatus in the described biochemistry pool; Supernatant after biochemistry pool is handled is introduced one second settling tank and is precipitated, and the supernatant of post precipitation is introduced reverse ore in sand form filtering basin and filtered, and recycles through the water of reverse ore in sand form filtering basin.
Further, in described equalizing tank, adding mass percent is 98% the vitriol oil.
Further; In the deep layer air flotation pool, be provided with a water pump; Inject ferrous sulfate and Tai-Ace S 150 in the water inlet pipe of described water pump, the mass percent of described ferrous sulfate and Tai-Ace S 150 is 70:30, and the rising pipe of described water pump and described biochemistry pool are communicated with; Insert pressurized air on the rising pipe of described water pump, described compressed-air actuated pressure is 4-5 ㎏/㎝
2
Further, be provided with a mill formula reliever in the described deep layer air flotation pool.
Further, the degree of depth of described deep layer air flotation pool is 7.5m-8m, and the lower end of described air flotation pool is provided with a bucket, and described air flotation pool is divided into release area and disengaging zone.
Further, the water after handling through second settling tank gets into reverse ore in sand form filtering basin from the bottom water inlet pipe of two settling tanks.
Concrete, deep layer air flotation pool, aerating apparatus that the present invention adopts are prior art, repeat no more at this.
The present invention compares with prior art, and its technical progress is conspicuous.The present invention has carried out the adjusting of pH value to waste water in equalizing tank, make waste water can in the hydrolysis anaerobic pond, realize complete hybrid-type hydrolysis anaerobic acidification, can COD objectionable impuritiess such as (CODs) be reduced about 50%.
The air flotation pool that the present invention adopts, this air supporting degree of depth is 7.5m-8m, divides into bucket, divides release area and disengaging zone in the air flotation pool.Dissolved-air pressure reaches dissolved-air rate and enters release area more than 90% at 2.5 ㎏/㎝ 2.Adopted mill formula reliever in the described air flotation pool; This reliever reaches clog-free makes 2.5 ㎏/㎝ 2 to dropping to 0.8 ㎏/㎝, 2-0.7 ㎏/㎝ 2 in the instantaneous energy dissipating that discharges; Water body rises through net formula separating layer then, reaches the stable nothing of rising water body and stirs, and has further cut air pocket; Reach even microbubble shape, guarantee that no bubble piece occurs on the release area in mud.This step can reduce remaining COD objectionable impuritiess such as (CODs) about 50%-60%; SS (suspended particulate) clearance can reach more than 90%.
The aerating apparatus that the present invention adopts utilizes water pump that the cutting action of the strong turbulent fluctuation of gas-liquid-solid (active sludge) three-phase mixed stream has been reached impossible some physics that take place of general aerating apparatus and effect unique biologically.Because mud, water mixed liquid (the about 0.1Mpa of pressure) under the effect of water pump; Produce high jet motion at the spout place; Aspirate outside air simultaneously and get into mixing head and mixed flow device; Activated sludge particles and inhaled air are cut into countless tiny particulates and bubble in mixing head, and high dispersing has greatly increased the mass transfer interface of active sludge and air in sewage; After being the tiny bubble and mud particulate entering aeration tank of high dispersing; Form dissolved air water shape microvesicle and be radiated each position, full pond; Thereby further accomplish the transmission of oxygen, organic absorption and oxygenizement; Because the utilization ratio of oxygen high (generally can reach 60%), mikrobe and biological sludge activation effect obviously improve, and the ability of biochemical anti-shock loading is strengthened.Implementing this technological positive effect is: the liquid level of biochemistry pool can increase the biochemistry pool volume more than 8m, the air stroke is doubled, and the utilization ratio that reaches oxygen increases.
The present invention has also adopted reverse ore in sand form filtering technique; Water inlet pipe gets into reverse ore in sand form filtering basin to water after handle in the heavy pond of second settling tank from the bottom, pond, and through the water distributor smooth outflow, reverse flow is through filtering layer; What waste water at first contacted is that particle diameter is bigger, contains the stronger filtering layer of dirty ability, and the suspension impurity in the water can be deep into filtering layer inside; Make impurity uniform distribution in filtering layer; Reduced head loss, improved the retaining power of filtering layer greatly, the more important thing is that these impurity are that mikrobe has been created condition in the breeding of filtering layer depths; Can a part of bacterium of lower layer space be carried in the filtrate of upper strata during filtering layer back flushing simultaneously; Promoted the microbionation and the breeding of whole filtering layer again, improved biochemical spatial bacterium and had quantity, thereby shortened the during cultivation of filtering layer.State of bacterium and quantity determine the quality of biological filtering layer biochemical effect, and the adsorptive power that reverse filter type can bigger performance filtering layer increases microorganism growth breeding space, shorten the filtering layer ripening stage also to guarantee the ripening process effluent quality.Reverse ore in sand form filters and utilizes oxidizing bacteria further to remove SS (suspended particulate) in the water, COD (COD) or the like.
Embodiment
A kind of method of wastewater treatment that adopts regenerated papermaking of the present invention; Comprise a step of the waste water of regenerated papermaking being introduced the water inlet barrier; Waste water is handled the back through the water inlet barrier and is introduced an equalizing tank, in described equalizing tank, adds acid for adjusting pH value, makes pH value in the equalizing tank between 8-8.5; Then the waste water in the equalizing tank is promoted to the hydrolysis anaerobic pond anaerobism that is hydrolyzed through pump; Waste water after the hydrolysis anaerobism is introduced one first settling tank and is precipitated, and post precipitation is introduced a deep layer air flotation pool with the supernatant in first settling tank and carried out the air supporting processing, after air supporting is handled the supernatant in the deep layer air flotation pool is introduced a biochemistry pool; Be provided with an aerating apparatus in the described biochemistry pool; Supernatant after biochemistry pool is handled is introduced one second settling tank and is precipitated, and the supernatant of post precipitation is introduced reverse ore in sand form filtering basin and filtered, and recycles through the water of reverse ore in sand form filtering basin.
Further, in described equalizing tank, adding mass percent is 98% the vitriol oil.
Further; In the deep layer air flotation pool, be provided with a water pump; Inject ferrous sulfate and Tai-Ace S 150 in the water inlet pipe of described water pump, the mass percent of described ferrous sulfate and Tai-Ace S 150 is 70:30, and the rising pipe of described water pump and described biochemistry pool are communicated with; Insert pressurized air on the rising pipe of described water pump, described compressed-air actuated pressure is 4-5 ㎏/㎝
2
Further, be provided with a mill formula reliever in the described deep layer air flotation pool.
Further, the degree of depth of described deep layer air flotation pool is 7.5m-8m, and the lower end of described air flotation pool is provided with a bucket, and described air flotation pool is divided into release area and disengaging zone.
Further, the water after handling through second settling tank gets into reverse ore in sand form filtering basin from the bottom water inlet pipe of two settling tanks.
Claims (6)
1. the method for wastewater treatment of a regenerated papermaking; Comprise a step of the waste water of regenerated papermaking being introduced the water inlet barrier; It is characterized in that: waste water is handled the back through the water inlet barrier and is introduced an equalizing tank, in described equalizing tank, adds acid for adjusting pH value, makes pH value in the equalizing tank between 8-8.5; Then the waste water in the equalizing tank is promoted to the hydrolysis anaerobic pond anaerobism that is hydrolyzed through pump; Waste water after the hydrolysis anaerobism is introduced one first settling tank and is precipitated, and post precipitation is introduced a deep layer air flotation pool with the supernatant in first settling tank and carried out the air supporting processing, after air supporting is handled the supernatant in the deep layer air flotation pool is introduced a biochemistry pool; Be provided with an aerating apparatus in the described biochemistry pool; Supernatant after biochemistry pool is handled is introduced one second settling tank and is precipitated, and the supernatant of post precipitation is introduced reverse ore in sand form filtering basin and filtered, and recycles through the water of reverse ore in sand form filtering basin.
2. the method for wastewater treatment of a kind of regenerated papermaking as claimed in claim 1 is characterized in that: in described equalizing tank, add mass percent and be 98% the vitriol oil.
3. the method for wastewater treatment of a kind of regenerated papermaking as claimed in claim 1; It is characterized in that: in the deep layer air flotation pool, be provided with a water pump; Inject ferrous sulfate and Tai-Ace S 150 in the water inlet pipe of described water pump, the mass percent of described ferrous sulfate and Tai-Ace S 150 is 70:30, and the rising pipe of described water pump and described biochemistry pool are communicated with; Insert pressurized air on the rising pipe of described water pump, described compressed-air actuated pressure is 4-5 ㎏/㎝
2
4. the method for wastewater treatment of a kind of regenerated papermaking as claimed in claim 1 is characterized in that: also be provided with a mill formula reliever in the described deep layer air flotation pool.
5. the method for wastewater treatment of a kind of regenerated papermaking as claimed in claim 1, it is characterized in that: the degree of depth of described deep layer air flotation pool is 7.5m-8m, and the lower end of described air flotation pool is provided with a bucket, and described air flotation pool is divided into release area and disengaging zone.
6. the method for wastewater treatment of a kind of regenerated papermaking as claimed in claim 1 is characterized in that: the water after handling through second settling tank gets into reverse ore in sand form filtering basin from the bottom water inlet pipe of two settling tanks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110234577A CN102311212A (en) | 2011-08-16 | 2011-08-16 | Method for processing wastewater from papermaking with waste paper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110234577A CN102311212A (en) | 2011-08-16 | 2011-08-16 | Method for processing wastewater from papermaking with waste paper |
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| CN102311212A true CN102311212A (en) | 2012-01-11 |
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| CN201110234577A Pending CN102311212A (en) | 2011-08-16 | 2011-08-16 | Method for processing wastewater from papermaking with waste paper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904770A (en) * | 2017-05-06 | 2017-06-30 | 湖南恒安生活用纸有限公司 | A kind of papermaking wastewater treatment system and handling process |
| CN114988642A (en) * | 2022-06-10 | 2022-09-02 | 安徽新宇环保科技股份有限公司 | Intelligent polluted water treatment system based on water quality detection indexes |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587089A (en) * | 2004-08-27 | 2005-03-02 | 华南理工大学 | Process for treatnig paper-making waste water of waste paper |
| CN1772660A (en) * | 2005-09-22 | 2006-05-17 | 岳阳纸业股份有限公司 | Treating process of high concentration papermaking effluent |
| CN101343129A (en) * | 2008-08-15 | 2009-01-14 | 中冶华天工程技术有限公司 | Pretreatment technique for decolorization of wastewater at middle plate of paper-making pulping |
| CN101428934A (en) * | 2008-12-10 | 2009-05-13 | 王军良 | Apparatus for treating waste water apparatus for treating waste water from regeneration slurry boxboard production |
| CN101708916A (en) * | 2009-09-14 | 2010-05-19 | 陕西科技大学 | Closed circulation and zero emission processes for papermaking wastewater |
-
2011
- 2011-08-16 CN CN201110234577A patent/CN102311212A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587089A (en) * | 2004-08-27 | 2005-03-02 | 华南理工大学 | Process for treatnig paper-making waste water of waste paper |
| CN1772660A (en) * | 2005-09-22 | 2006-05-17 | 岳阳纸业股份有限公司 | Treating process of high concentration papermaking effluent |
| CN101343129A (en) * | 2008-08-15 | 2009-01-14 | 中冶华天工程技术有限公司 | Pretreatment technique for decolorization of wastewater at middle plate of paper-making pulping |
| CN101428934A (en) * | 2008-12-10 | 2009-05-13 | 王军良 | Apparatus for treating waste water apparatus for treating waste water from regeneration slurry boxboard production |
| CN101708916A (en) * | 2009-09-14 | 2010-05-19 | 陕西科技大学 | Closed circulation and zero emission processes for papermaking wastewater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904770A (en) * | 2017-05-06 | 2017-06-30 | 湖南恒安生活用纸有限公司 | A kind of papermaking wastewater treatment system and handling process |
| CN114988642A (en) * | 2022-06-10 | 2022-09-02 | 安徽新宇环保科技股份有限公司 | Intelligent polluted water treatment system based on water quality detection indexes |
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Application publication date: 20120111 |