CN104211272A - Environmentally-friendly treatment method of papermaking sludge - Google Patents
Environmentally-friendly treatment method of papermaking sludge Download PDFInfo
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- CN104211272A CN104211272A CN201410399917.3A CN201410399917A CN104211272A CN 104211272 A CN104211272 A CN 104211272A CN 201410399917 A CN201410399917 A CN 201410399917A CN 104211272 A CN104211272 A CN 104211272A
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- paper mill
- mill sludge
- sludge
- papermaking sludge
- mud
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
Abstract
The invention discloses an environmentally-friendly treatment method of papermaking sludge. The method comprises the following steps: adding a polypropylene acyl polymerizer to a wastewater precipitation pool from its inlet, sending separated water to a biochemical pool and then to a filter pool, sending papermaking sludge to a storage pool, and sieving through a vibration slit to make the sludge reach a sedimentation tank; absorbing odor, colloids, ink and other substances by an activated carbon adsorption layer arranged on the sedimentation tank, and sending the papermaking sludge into a filter pres in order to make the dryness of the papermaking sludge reach 40-55%; baking through a baking oven to remove all water, crushing the solidified papermaking sludge through a pulper, and burning the crushed papermaking sludge in a burning furnace; and adding the burned papermaking sludge to a waste residue recovery water pool, sending the above available solution to a reaction tank, and dehydrating residual precipitates to obtain dehydrated precipitates which can be used for planting soil blending or buildings and other materials. The method changes traditional papermaking sludge treatment processes, realizes environmental protection and resource recycling, and makes the output of waste gas reach its lowest point.
Description
Technical field
The present invention relates to papermaking waste water sludge processing technology field, particularly a kind of paper mill sludge environmental protection treatment process.
Background technology
China is papermaking big country, and in paper-making process, the quantity discharged of paper mill sludge also comes out at the top in the whole world simultaneously.Current most of paper mill has obtained small portion mud outside comprehensive utilization, and remaining is sanitary landfill and processes, and needs every year tens mu, landfill soil mu even up to a hundred, has both wasted land resources, also can produce secondary pollution.Paper mill sludge source is mainly two aspects: the one, and the biological sludge producing in process of paper-making wastewater treatment, the 2nd, derive from the deinked sludge of paper-making process from waste paper deinking workshop section, the non-fiber impurity of screening scavenging process.The composition of biological sludge is generally: fiber fines, xylogen and derivative thereof and some organic substances.The composition of deinked sludge is very complicated, is mainly filler and coating in cellulosic fibre and original paper, also has in addition some staple fibres, thick slag and most of ink particle.In the current era of advocating environmental protection and resource circulation utilization, traditional treatment process to paper mill sludge, consumption fund not only, land occupation, all pollutes soil, underground water and air, does not obviously meet the requirement that China advocates industrial production.
Summary of the invention
Object of the present invention is exactly to solve above-mentioned technical problem, and a kind of paper mill sludge environment-friendly treatment method that meets environmental protection and resource circulation utilization is provided.
Technical problem of the present invention is mainly solved by following technical proposals:
A paper mill sludge environmental protection treatment process, comprises the following steps:
(1). the ingress that waste water enters settling tank that is deposited in of paper mill sludge is added to polyacrylamide polymerizing agent, sludge settling is recovered to mud storage pool again to the hypocone of settling tank.Water flows to biochemistry pool from top, delivers to filtering basin after biochemistry again.The macrobead adhesive producing while screening out larger impurity and the poly-polymerization mud of polyacrylamide with vibration slotted screen.Mud after screening passes through mud and the grains of sand that settling tank precipitation density is larger again, and settling tank is provided with some materials such as foul smell, colloid and prepared Chinese ink in activated carbon adsorption layer absorption mud;
(2). the mud through settling tank precipitation is sent into pressure filter, by pressure filter, by dehydration of papermaking sludge, obtains the paper mill sludge that mass dryness fraction is 40%-55%;
(3). the paper mill sludge that is 40%-55% by mass dryness fraction is sent into baking oven;
(4). through the paper mill sludge of high temperature oven braking, send in pulper and break up, the paper mill sludge after breaing up enters incinerator, and the ash discharging hole of incinerator connects waste residue precipitation by vibrating conduit and reclaims pond;
(5). the paper mill sludge being deposited in waste residue precipitation recovery pond is sent into pressure filter again, by pressure filter, paper mill sludge is carried out to dehydration again, and the paper mill sludge after dehydration is sent into oven braking.
Concrete, the power supply of described baking oven running to the waste gas of high-temp waste gas and boiler is heated to temperature of saturation by the supplementary feed of preheating in power generation assembly in cold-water wall, and in superheater the hotter superheated vapour to High Temperature High Pressure, superheated vapour enters steam turbine and drives steam turbine high speed rotation, steam turbine drives generator to rotate together, and generator coordinates with initiator and sends the required operation power supply of electrical energy fed baking oven.
Concrete, described waste residue precipitates recovery pond and is provided with emission-control equipment, and the solution that the paper mill sludge burning through incinerator flow into generation in waste residue precipitation recovery pond is connected with reaction tank by pipe connecting.
Concrete, described incinerator is provided with thermal source supply equipment.
As preferably, described baking oven is industrial high temperature baking oven.
The invention has the beneficial effects as follows: first, the present invention has environmental protection, realized the advantage of resource reusable edible; Secondly, while having avoided the traditional processing to paper mill sludge, use too much chemical processing agent; Moreover, realize and fast the moisture content of paper mill sludge being dried, save the treatment time; Moreover, take full advantage of the advantage that paper mill sludge can provide thermal source; Finally, minimizing, stabilization and innoxious that paper mill sludge is processed have been realized.
Accompanying drawing explanation
The invention will be further described to utilize accompanying drawing, but embodiment in accompanying drawing does not form any limitation of the invention, to those of ordinary skill in the art, is not paying under the prerequisite of creative work, can also obtain according to accompanying drawing once other accompanying drawing.
Fig. 1 is schematic flow sheet of the present invention.
Embodiment
Below by embodiment, and 1 pair of technical scheme of the present invention is described in further detail by reference to the accompanying drawings.
The principle of work of the present embodiment is very simple, and a kind of paper mill sludge environmental protection treatment process, comprises the following steps:
Step (1). the ingress that waste water enters settling tank that is deposited in of paper mill sludge is added to polyacrylamide polymerizing agent, sludge settling is recovered to mud storage pool again to the hypocone of settling tank.Water flows to biochemistry pool from top, delivers to filtering basin after biochemistry again.The macrobead adhesive producing while screening out larger impurity and the poly-polymerization mud of polyacrylamide with vibration slotted screen.Mud after screening passes through mud and the grains of sand that settling tank precipitation density is larger again, and settling tank is provided with some materials such as foul smell, colloid and prepared Chinese ink in activated carbon adsorption layer absorption mud;
Step (2). the mud through settling tank precipitation is sent into pressure filter, by pressure filter, by dehydration of papermaking sludge, obtains the paper mill sludge that mass dryness fraction is 40%-55%;
Step (3). the paper mill sludge that is 40%-55% by mass dryness fraction is sent into baking oven;
Step (4). through the paper mill sludge of high temperature oven braking, send in pulper and break up, the paper mill sludge after breaing up enters incinerator, and the ash discharging hole of incinerator connects waste residue precipitation by vibrating conduit and reclaims pond;
Step (5). the paper mill sludge being deposited in waste residue precipitation recovery pond is sent into pressure filter again, by pressure filter, paper mill sludge is carried out to dehydration again, and the paper mill sludge after dehydration is sent into oven braking.
Concrete, the power supply turning round at step (3) baking oven to the waste gas of high-temp waste gas and boiler is heated to temperature of saturation by the supplementary feed of preheating in power generation assembly in cold-water wall, and in superheater the hotter superheated vapour to High Temperature High Pressure, superheated vapour enters steam turbine and drives steam turbine high speed rotation, steam turbine drives generator to rotate together, and generator coordinates with initiator and sends the required operation power supply of electrical energy fed baking oven.
Concrete, at step (4) waste residue, precipitating on recovery pond and be provided with emission-control equipment, the solution that the paper mill sludge burning through incinerator flow into generation in waste residue precipitation recovery pond is connected with reaction tank by pipe connecting.
Concrete, in step (4) and step (5) incinerator, be provided with thermal source supply equipment.
Activated carbon adsorption layer: foul smell, colloid and ink that paper mill sludge the inside is contained all can be siphoned away 95% by activated carbon adsorption layer.
Baking oven: due to the problem that it is more difficult that paper mill sludge dewaters completely, use industrial high temperature baking oven, temperature can reach 1500 ℃-1600 ℃, paper mill sludge is fully dewatered, not only remove the composition that easily causes secondary pollution in paper mill sludge, and some objectionable impuritiess that produce when generation burning is insufficient have been restrained in burning.
The present embodiment is the embodiment of example of the present invention; for those skilled in the art; the invention discloses on the basis of application method and principle; be easy to make various types of improvement or distortion; and be not limited only to the described structure of the above-mentioned embodiment of the present invention, therefore previously described mode is preferred version, and does not have restrictive meaning; every equivalence of doing according to the present invention changes and revises, all in the scope protection domain of the claims in the present invention book.
Claims (4)
1. a paper mill sludge environmental protection treatment process, comprises the following steps:
(1). the ingress that waste water enters settling tank that is deposited in of paper mill sludge is added to polyacrylamide polymerizing agent, sludge settling is recovered to mud storage pool again to the hypocone of settling tank, water flows to biochemistry pool from top, after biochemistry, deliver to again filtering basin, the macrobead adhesive producing while screening out larger impurity and the poly-polymerization mud of polyacrylamide with vibration slotted screen, mud after screening passes through mud and the grains of sand that settling tank precipitation density is larger again, and settling tank is provided with some materials such as foul smell, colloid and prepared Chinese ink in activated carbon adsorption layer absorption mud;
(2). the mud through settling tank precipitation is sent into pressure filter, by pressure filter, by dehydration of papermaking sludge, obtains the paper mill sludge that mass dryness fraction is 40%-55%;
(3). the paper mill sludge that is 40%-55% by mass dryness fraction is sent into baking oven;
(4). through the paper mill sludge of high temperature oven braking, send in pulper and break up, the paper mill sludge after breaing up enters incinerator, and the ash discharging hole of incinerator connects waste residue precipitation by vibrating conduit and reclaims pond;
(5). the paper mill sludge being deposited in waste residue precipitation recovery pond is sent into pressure filter again, by pressure filter, paper mill sludge is carried out to dehydration again, and the paper mill sludge after dehydration is sent into oven braking.
2. a kind of paper mill sludge environmental protection treatment process according to claim 1; it is characterized in that: the power supply of described baking oven running to the waste gas of high-temp waste gas and boiler is heated to temperature of saturation by the supplementary feed of preheating in power generation assembly in cold-water wall; and in superheater the hotter superheated vapour to High Temperature High Pressure; superheated vapour enters steam turbine and drives steam turbine high speed rotation; steam turbine drives generator to rotate together, and generator coordinates with initiator and sends the required operation power supply of electrical energy fed baking oven.
3. a kind of paper mill sludge environmental protection treatment process according to claim 1; it is characterized in that: described waste residue precipitates recovery pond and is provided with emission-control equipment, the solution that the paper mill sludge burning through incinerator flow into generation in waste residue precipitation recovery pond is connected with reaction tank by pipe connecting.
4. a kind of paper mill sludge environment-friendly treatment method according to claim 1, is characterized in that: described incinerator is provided with thermal source supply equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410399917.3A CN104211272A (en) | 2014-08-14 | 2014-08-14 | Environmentally-friendly treatment method of papermaking sludge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410399917.3A CN104211272A (en) | 2014-08-14 | 2014-08-14 | Environmentally-friendly treatment method of papermaking sludge |
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| CN201410399917.3A Pending CN104211272A (en) | 2014-08-14 | 2014-08-14 | Environmentally-friendly treatment method of papermaking sludge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702111A (en) * | 2017-10-17 | 2018-02-16 | 北京高安屯垃圾焚烧有限公司 | Garbage burning boiler sludge mixes the device of burning |
| CN111448968A (en) * | 2020-02-28 | 2020-07-28 | 南京工业大学 | Method for preparing greening soil by improving tail mud of water works |
-
2014
- 2014-08-14 CN CN201410399917.3A patent/CN104211272A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702111A (en) * | 2017-10-17 | 2018-02-16 | 北京高安屯垃圾焚烧有限公司 | Garbage burning boiler sludge mixes the device of burning |
| CN111448968A (en) * | 2020-02-28 | 2020-07-28 | 南京工业大学 | Method for preparing greening soil by improving tail mud of water works |
| CN111448968B (en) * | 2020-02-28 | 2022-02-11 | 南京工业大学 | Method for preparing greening soil by improving tail mud of water works |
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Application publication date: 20141217 |
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| WD01 | Invention patent application deemed withdrawn after publication |