CN102174763A - Treatment method for paper making waste water - Google Patents
Treatment method for paper making waste water Download PDFInfo
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- CN102174763A CN102174763A CN 201010616781 CN201010616781A CN102174763A CN 102174763 A CN102174763 A CN 102174763A CN 201010616781 CN201010616781 CN 201010616781 CN 201010616781 A CN201010616781 A CN 201010616781A CN 102174763 A CN102174763 A CN 102174763A
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Abstract
The invention relates to a treatment method for paper making waste water. In the method, one part of white water from a paper making machine is directly recycled, and the other part of white water is physically filtered by a disc type filter and then subjected to advanced treatment by a biological aerated filter, a fiber bundle filter, an active carbon filter and an ultraviolet disinfector to be recycled again or discharged when reaching the standards. The treatment equipment concerned in the invention is waste water treatment equipment used in the prior art. The method comprises a waste water purification step and a backwash water flushing step. The treated waste water meets the requirements for production water and can be recycled.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment, particularly a kind of technological process for the treatment of papermaking method.
Background technology
Known paper waste processing method has coagulate gas floating process, oxidation pond technology, the combination of biological aerated filter process etc. or these methods, as Chinese patent application number 200810038176.0 (publication numbers: CN101591085, open day: on December 02nd, 2009) disclose the technology that a kind of waste water of paper mill is handled reuse, adopt the super efficiency shallow air flotation method and carry out fibre bundle or the technology of biological membrane processing, this technology is applicable to package paper, cultural paper, the wastewater treatment of extraordinary paper plant, but when being used to handle the waste water of high-grade slim paper plant such as toilet paper, it reclaims to be easy to generate when slurry utilizes again and disperses inhomogeneous and influence phenomenon such as paper strength.
There is following shortcoming in prior art:
(1) fiber loss rate height;
(2) wastewater recycle rate is lower;
When (3) the recovery slurry utilizes again, produce and disperse non-uniform phenomenon, influence paper strength greatly.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, and a kind of technological process for the treatment of papermaking method is provided.
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, design technological process for the treatment of papermaking method, method is compared and is had wastewater recycle rate and reach 90%～95% compared to existing technology, and a ton paper clear water consumption reaches 6～8 tons, and the fiber loss rate is reduced to 0.08% with inferior advantage.
The present invention realizes above-mentioned purpose with technology by the following method:
The present invention relates to a kind of technological process for the treatment of papermaking method, this method is meant that the part with paper machine plain boiled water directly recycles, and a part is carried out physical filtering, biological aerated filter, fiber bundle filter, charcoal filter, ultraviolet ray disinfector combination through the disc type filter and carried out recycling once more or qualified discharge after the advanced treating.Treatment facility involved in the present invention is an applied sewage treatment equipment in the prior art.Described method is divided into purification of waste water step and two steps of recoil washing.Described step is as follows:
The purification of waste water step:
At first, the plain boiled water waste water that produces in the paper-making process by one or more disc type filters, is separated fibre bundle with waste water.Earlier fibre bundle was separated with waste water before plain boiled water waste water is carried out a biological disposal upon, the fibre bundle quality of separating is higher, near the requirement that is used for paper, and can recycling.
Then, will deliver in the regulating reservoir through the waste water of disc type filter process and precipitate, waste water hydraulic retention 3～5 hours in regulating reservoir.
Once more, will deliver in the group of integral biological filter tank through biological treatment through the waste water that regulating reservoir is handled, waste water hydraulic retention 3～5 hours in the group of integral biological filter tank, waste water forms waste water up to standard by biological treatment in the group of integral biological filter tank.When this step was finished, waste water had been to reach wastewater discharge standard, and manufacturing enterprise can select waste discharge or further handle waste water according to the amount of needed cycling use of water.At last, waste water then needs further processing as cycling use of water, makes the content of bacterium in the waste water and impurity reach the requirement of industrial water.To deliver to clear water reserviors through the waste water up to standard that integral biological filter tank group is handled, waste water up to standard hydraulic retention 2～3 hours in clear water reserviors.The waste water up to standard of finishing dealing with in the clear water reserviors is delivered to reuse pool by clear water reserviors.Above-mentioned waste water up to standard is delivered at clear water reserviors and is added 5～15ppm polyaluminium chloride (polyaluminium chloride is diluted to 0.5%～1.0% solution before adding) in the process of reuse pool earlier, filter by fiber bundle filter and active carbon filter successively then, the suspended impurity in the waste water is removed.Add 30～40ppm clorox (in CI) then and handle, kill microorganism, bacterium in the waste water by ultraviolet ray disinfector.At last waste water up to standard is called in reuse pool, waste water up to standard hydraulic retention 2～3 hours in reuse pool.Waste water up to standard is through reaching the requirement of paper water after the above-mentioned step.
Above-mentioned ultraviolet ray disinfector require the environment for use condition: sterilizer is operate as normal under the following conditions.Water turbidity degree≤5 degree of water inlet, total iron-holder≤0.3mg/L, colourity≤15 degree, water temperature 〉=5 ℃, total coli group≤1000/L, total number of bacteria≤2000/mL; Maximum relative humidity≤90% (being equivalent to 20 ℃ ± 5 ℃ of air) in air ambient temperature 〉=5 ℃, the air
The content of the main chemicals in the waste water before this method is handled: COD＜200mg/l, SS＜60mg/L, T≤35 ℃, PH:7～9.Handling back discharging water outlet can reach: COD≤60mg/l, SS≤30mg/L.Waste water after treatment.Water outlet discharging water quality reaches " integrated wastewater discharge standard " (GB8978-1996) primary standard requirement, and the water quality of recycle-water can satisfy the water quality requirement of industrial water.
After moving a period of time,, need clean equipment the following recoil of operation water-washing step during cleaning to equipment in order to keep the production capacity of equipment.
The recoil water-washing step is as follows:
Utilize backwash pump that the retaining in the clear water reserviors is transferred in integral biological filter tank group and/or fiber bundle filter and/or the active carbon filter, will wash to storage basin in integral biological filter tank group and/or fiber bundle filter and/or the active carbon filter.The retaining that utilizes the recoil water pump to call in the clear water reserviors is washed integral biological filter tank group and/or fiber bundle filter and/or active carbon filter.
The backwash sewage that recoil washing produces clarifying contaminated liquids 1～3 day in storage basin;
Then the supernatant in the storage basin is back to regulating reservoir, pending purification of waste water.
Last regularly with discharging storage basin after the sludge press filtration processed in the storage basin, mud is sent to harmless treatment.
The filter backwash cycle described in the above-mentioned step is 20～30 days.
An integral biological filter tank in 1～3 day backwash integral biological of group filter tank, integral biological filter tank group described in the above-mentioned step of stating.
Can directly discharge through the waste water up to standard after integral biological filter tank group and the clear water reserviors processing in the above-mentioned step.Described step through fiber bundle filter, active carbon filter filters and add clorox and handle by ultraviolet ray disinfector after waste water reach industrial water and require to carry out recycle once more.
Description of drawings
Fig. 1 is a process chart of the present invention;
Fig. 2 is a purification of waste water flow chart of steps of the present invention;
Fig. 3 is a recoil water-washing step flow chart of the present invention;
The specific embodiment
Embodiment one: as shown in Figure 1, 2, when the present invention carries out purification of waste water, at first with the plain boiled water waste water that produces in the paper-making process by one or more disc type filters, fibre bundle is separated with waste water.Earlier fibre bundle was separated with waste water before plain boiled water waste water is carried out a biological disposal upon, the fibre bundle quality height of separating can reach the requirement that is used for paper, can recycling.
Then, will deliver in the regulating reservoir through the waste water of disc type filter process and precipitate, waste water hydraulic retention 4 hours in regulating reservoir.
Once more, will deliver in the group of integral biological filter tank through biological treatment through the waste water that regulating reservoir is handled, waste water hydraulic retention 4 hours in the group of integral biological filter tank, waste water forms waste water up to standard by biological treatment in the group of integral biological filter tank.When this step was finished, waste water had been to reach wastewater discharge standard, and manufacturing enterprise can select waste discharge or further handle waste water according to the amount of needed cycling use of water.At last, waste water then needs further processing as cycling use of water, makes the content of bacterium in the waste water and impurity reach the requirement of industrial water.To deliver to clear water reserviors through the waste water up to standard that integral biological filter tank group is handled, waste water up to standard hydraulic retention 2.5 hours in clear water reserviors.The waste water up to standard of finishing dealing with in the clear water reserviors is delivered to reuse pool by clear water reserviors.Above-mentioned waste water up to standard is delivered at clear water reserviors and is added 5～15ppm polyaluminium chloride (polyaluminium chloride is diluted to 0.5%～1.0% solution before adding) in the process of reuse pool earlier, filter by fiber bundle filter and active carbon filter successively then, the suspended impurity in the waste water is removed.Add 30～40ppm clorox (in CI) then and handle, kill microorganism, bacterium in the waste water by ultraviolet ray disinfector.At last waste water up to standard is called in reuse pool, waste water up to standard hydraulic retention 2～3 hours in reuse pool.Waste water up to standard is through reaching the requirement of paper water after the above-mentioned step.
The content of the main chemicals in the waste water before this method is handled: COD＜200mg/l, SS＜60mg/L, T≤35 ℃, PH:7～9.Handling back discharging water outlet can reach: COD≤60mg/l, SS≤30mg/L.Waste water after treatment.Water outlet discharging water quality reaches " integrated wastewater discharge standard " (GB8978-1996) primary standard requirement, and the water quality of recycle-water can satisfy the water quality requirement of industrial water.
After moving a period of time,, need clean equipment the following recoil of operation water-washing step during cleaning to equipment in order to keep the production capacity of equipment.
Shown in Fig. 1,3, the recoil water-washing step is as follows:
Utilize backwash pump that the retaining in the clear water reserviors is transferred in integral biological filter tank group or fiber bundle filter or the active carbon filter, will wash to storage basin in integral biological filter tank group or fiber bundle filter or the active carbon filter.The retaining that utilizes the recoil water pump to call in the clear water reserviors is washed integral biological filter tank group or fiber bundle filter or active carbon filter.
The backwash sewage that recoil washing produces clarifying contaminated liquids 1～3 day in storage basin;
Then the supernatant in the storage basin is back to regulating reservoir, pending purification of waste water.
Last regularly with discharging storage basin after the sludge press filtration processed in the storage basin, mud is sent to harmless treatment.
The filter backwash cycle described in the above-mentioned step is 25 days.
An integral biological filter tank in 2 days backwash integral biologicals of group filter tank, integral biological filter tank group described in the above-mentioned step of stating.
Claims (4)
1. a technological process for the treatment of papermaking method is characterized in that described method is divided into purification of waste water step and recoil water-washing step; Described step is as follows:
(1) purification of waste water step:
(1.1) the plain boiled water waste water that produces in the paper-making process is filtered by the disc type filter, fibre bundle is separated with waste water;
(1.2) will deliver in the regulating reservoir waste water hydraulic retention 3～5 hours in regulating reservoir through the waste water of disc type filter process;
(1.3) will deliver to integral biological filter tank group through the waste water that regulating reservoir is handled, waste water hydraulic retention 3～5 hours in the group of integral biological filter tank forms waste water up to standard;
(1.4) will deliver to clear water reserviors through the waste water up to standard that integral biological filter tank group is handled, waste water up to standard hydraulic retention 2～3 hours in clear water reserviors;
(1.5) waste water up to standard that will finish dealing with in clear water reserviors is delivered to reuse pool by clear water reserviors; Waste water up to standard is delivered at clear water reserviors and is added polyaluminium chloride in the process of reuse pool earlier; Filter by fiber bundle filter and active carbon filter successively then, add clorox again and handle by ultraviolet ray disinfector; The waste water up to standard of calling in reuse pool hydraulic retention 2～3 hours in reuse pool;
The recoil water-washing step:
(2.1) utilize backwash pump that the retaining in the clear water reserviors is transferred in integral biological filter tank group and/or fiber bundle filter and/or the active carbon filter, will wash to storage basin in integral biological filter tank group and/or fiber bundle filter and/or the active carbon filter;
(2.2) backwash sewage clarifying contaminated liquids 1～3 day in storage basin;
(2.3) supernatant of storage basin is back to regulating reservoir;
(2.4) regularly will discharge storage basin after the sludge press filtration processed in the storage basin.
2. technological process for the treatment of papermaking method according to claim 1 is characterized in that the filter backwash cycle described in the described step (2.1) is 20～30 days.
3. technological process for the treatment of papermaking method according to claim 2 is characterized in that an integral biological filter tank in 1～3 day backwash integral biological of group filter tank, the integral biological filter tank group described in the described step (2.1).
4. according to claim 1 or 2 or 3 described technological process for the treatment of papermaking methods, it is characterized in that the waste water up to standard after described step (1.4) is handled directly discharges; Waste water after described step (1.5) is handled reaches industrial water and requires to carry out recycle once more.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058467A (en) * | 2013-01-22 | 2013-04-24 | 富民宝地纸业有限公司 | Water paper paper-making wastewater efficient treatment and comprehensive recycling method and device |
| CN103663776A (en) * | 2013-09-23 | 2014-03-26 | 浙江凯丰纸业有限公司 | Papermaking white water circulating treatment method and treatment device |
| CN104150676A (en) * | 2014-01-10 | 2014-11-19 | 广东金明环保科技有限公司 | Integrated equipment for domestic sewage treatment |
| CN104370414A (en) * | 2014-10-24 | 2015-02-25 | 苏州富奇诺水治理设备有限公司 | Wastewater treatment system of multi-section process |
| CN104370415A (en) * | 2014-10-24 | 2015-02-25 | 苏州富奇诺水治理设备有限公司 | Papermaking wastewater treatment system |
| CN107604736A (en) * | 2017-10-20 | 2018-01-19 | 南京必蓝环境技术有限公司 | A kind of plain boiled water step processing and reuse technology |
| CN109592827A (en) * | 2018-12-25 | 2019-04-09 | 北京鑫晟环能科技发展有限公司 | Reclaiming treatment method for hydraulic loom waste water |
| CN117142729A (en) * | 2023-10-31 | 2023-12-01 | 保利长大工程有限公司 | Special tunnel water burst pollution treatment process |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104328707A (en) * | 2014-10-31 | 2015-02-04 | 玖龙纸业（太仓）有限公司 | White water treatment method and device for paper-making machine |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103058467A (en) * | 2013-01-22 | 2013-04-24 | 富民宝地纸业有限公司 | Water paper paper-making wastewater efficient treatment and comprehensive recycling method and device |
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| CN103663776A (en) * | 2013-09-23 | 2014-03-26 | 浙江凯丰纸业有限公司 | Papermaking white water circulating treatment method and treatment device |
| CN103663776B (en) * | 2013-09-23 | 2015-07-15 | 浙江凯丰纸业有限公司 | Papermaking white water circulating treatment method and treatment device |
| CN104150676A (en) * | 2014-01-10 | 2014-11-19 | 广东金明环保科技有限公司 | Integrated equipment for domestic sewage treatment |
| CN104150676B (en) * | 2014-01-10 | 2017-02-08 | 广东金明环保科技有限公司 | Integrated equipment for domestic sewage treatment |
| CN104370414A (en) * | 2014-10-24 | 2015-02-25 | 苏州富奇诺水治理设备有限公司 | Wastewater treatment system of multi-section process |
| CN104370415A (en) * | 2014-10-24 | 2015-02-25 | 苏州富奇诺水治理设备有限公司 | Papermaking wastewater treatment system |
| CN104370415B (en) * | 2014-10-24 | 2016-03-16 | 王德军 | A kind for the treatment of system of paper waste |
| CN107604736A (en) * | 2017-10-20 | 2018-01-19 | 南京必蓝环境技术有限公司 | A kind of plain boiled water step processing and reuse technology |
| CN109592827A (en) * | 2018-12-25 | 2019-04-09 | 北京鑫晟环能科技发展有限公司 | Reclaiming treatment method for hydraulic loom waste water |
| CN117142729A (en) * | 2023-10-31 | 2023-12-01 | 保利长大工程有限公司 | Special tunnel water burst pollution treatment process |
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Inventor after: Zhang Jian Inventor after: Luo Weijian Inventor after: Ma Zhongde Inventor after: Xu Yingjie Inventor after: Yu Zhuanming Inventor after: Lu Jianguo Inventor after: Wang Peng Inventor before: Zhang Jian Inventor before: Luo Weijian Inventor before: Zhang Weihong Inventor before: Xu Yingjie Inventor before: Yu Zhuanming Inventor before: Lu Jianguo Inventor before: Wang Peng |
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Effective date of registration: 20170418 Address after: 431605 Hubei, Xiaogan, Xiaonan Economic Development Zone, national highway, 316 National Highway Patentee after: Vinda (China) Co., Ltd. Address before: 432100 Hubei, Xiaogan, Xiaonan Economic Development Zone, national highway, 316 National Highway Patentee before: Vinda Paper Industry (Xiaogan) Co., Ltd. |