CN104098244A - Harmless treatment and recycling application method for sludge - Google Patents
Harmless treatment and recycling application method for sludge Download PDFInfo
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- CN104098244A CN104098244A CN201410386438.8A CN201410386438A CN104098244A CN 104098244 A CN104098244 A CN 104098244A CN 201410386438 A CN201410386438 A CN 201410386438A CN 104098244 A CN104098244 A CN 104098244A
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Abstract
The invention discloses a harmless treatment and recycling application method for sludge, and belongs to the technical field of sludge treatment. The method comprises the steps of: 1, leading sludge into a reaction tank to sequentially perform harmless treatment of sterilization and deodorization, conditioning and complexing heavy metal; 2, leading the sludge which has been subjected to harmless treatment into a storage tank for storing; 3, sending the stored sludge into a filter press for filter-pressing until moisture content reaches 30-40%, and thereby obtaining blocky sludge; 4, crushing the filter-pressed blocky sludge; 5, drying the crushed sludge until the moisture content reaches 10-20%; 6, smashing the dried sludge to serve as sludge product applied to soil improvement and ecological protection. The harmless treatment and recycling application method for sludge has the advantages of being capable of treating sludge continuously, large in treatment capacity and good in effect. The heavy metal content of the treated sludge product reaches national sludge agricultural A-level standards, and can be applied to soil improvement and ecological protection.
Description
Technical field
What the present invention relates to is sludge disposal technology.
Background technology
In mud enrichment the pollutent in sewage, contain the hazardous and noxious substances such as the nutritive substances such as a large amount of nitrogen, phosphorus and organism, viral micro-organisms, parasitic ovum, heavy metal, sewage gas smells foul, and contain a large amount of bacteriums, adsorb more than 50% toxic heavy metal in sewage, mainly comprised copper (Cu), zinc (Zn), cadmium (Cd), nickel (Ni), chromium (Cr), plumbous (Pb), mercury (Hg), arsenic (As) etc.The main characteristic of mud is: water ratio high (can up to more than 99%), and organic content is high, easily degenerates smellyly, and particle is thinner, proportion is less, is gluey liquid, is difficult to carry out solid-liquid separation by sedimentation.If mud is not carried out to harmless treatment, will cause serious environmental pollution.For this reason, CN 101733270A discloses the treatment process ＂ of a ＂ rotten waste material, the content of the method is: the weight ratio by rotten waste material adds calcium oxide, at stir storehouse, carry out mix and blend, the waste gas producing in being uniformly mixed reaction is introduced oxidizing treater and is carried out deodorization processing, and as fertilizer sources after the product dehumidifying after deodorization, granulation is used.To be mud and medicine carry out taking out to deliver to after mix and blend has reacted removing wet, granulation at stir storehouse the shortcoming one of this method again.Soar and again mud is input into stir storehouse and medicine after stir storehouse and carries out mix and blend reaction at stir storehouse.The processing power of this service intermittent mode is little, can not meet a large amount of sludge treatment; The 2nd, have no the heavy metal in mud is processed, if pending Of Heavy Metal Level In Sludge exceeds standard, the heavy metal content of the sludge product after the method is processed is difficult to reach national agricultural sludge A grade standard.
Summary of the invention
The inventive method is the above-mentioned shortcoming that overcomes prior art, and the heavy metal content that provides a kind of and can thoroughly kill the unwanted bacterias such as pathogenic bacteria contained in mud, parasite (ovum), eliminates the sludge product of mud because of foul smell corrupt and that fermentation produces, after processing reaches the method for the sewage sludge harmlessness Treatment and recovery application of national agricultural sludge A grade standard.
The method of sewage sludge harmlessness Treatment and recovery application of the present invention is:
1., mud imported to reaction tank sequentially carry out continuously the nuisanceless disposal of sterilization and deodorization, conditioning and complexing heavy metal,
2. the mud, after nuisanceless disposal imports storage pool and stores,
3., the mud after storing is sent into pressure filter press filtration to water ratio 30～40%, obtain block mud,
4., the block mud after press filtration is carried out to break process,
5., the mud after fragmentation is dried to water ratio and is reached 10-20%,
6., the mud after drying is pulverized to the sludge product that obtains can be used as soil improvement and ecological protection use.
The principle of work of present method is as follows:
During work, mud enters sterilization and deodorization reaction tank by sludge pipe, when mud enters, by being arranged on the chemicals feeder of mud ingress, by proportioning, adding medicine and stir, mud is mixed with medicament contact once entering pond body, mud under constantly stirring is in the process of the outlet campaign of pond body, medicine is killed the unwanted bacterias such as pathogenic bacteria contained in mud, parasite (ovum), eliminates mud because of foul smell corrupt and that fermentation produces.Mud after above-mentioned processing, by a unhurried current passage, introduce sludge conditioning reaction tank, mud mixes mutually and fully stirs with the amendment from chemicals feeder when entering reaction tank, in the moving process toward outlet, complete chemical reaction, shale to mud regulates, then by unhurried current passage, enter heavy metal processing reaction pond, mud enters Chi Shitong from the medicine mixed and fully stirring mutually of chemicals feeder, in the moving process toward outlet, heavy metal and medicine complete complex reaction, generate stable complex compound; Mud after above-mentioned processing enters stabilization pond and fully stirs through unhurried current passage, and the physicochemical property of the mud after first three step process are stablized.
The motion from import to outlet of mud, can be set to lower than entrance by outlet, utilizes natural-drop to realize gravity flow.Also can maintain by pumping mode the continuous motion of mud.
Mud after nuisanceless disposal stores at storage pool, and its effect one is that the performance that makes mud is further stable, and the 2nd, for next step, for realizing the alternately press filtration of whole technique non-stop run, provide a buffering distribution process.
Adopt pressure filter press filtration mud, the favourable large quantity of moisture of removing efficiently in mud, facilitates follow-up fragmentation, oven dry, pulverizing to obtain product.
The national agricultural sludge A grade standard that in the product obtaining, heavy metal content reaches.Therefore, this sludge product can be used as soil improvement and ecological protection use.
For different purposes, can do granulation, packing processing to powder-like product.
Compared with prior art, the advantage of the inventive method is:
1, can be continuously uninterrupted lignin-sludge, processing power is large.
2, adaptable to various mud, treatment effect is good.Independent separately owing to entering medicine system, establish one's own system, therefore can be according to convenient kind and the consumption of adjusting medicine used of the shale situation of different mud.Stability, the reliability of products obtained therefrom increase substantially.In sludge product after processing, heavy metal content reaches national agricultural sludge A grade standard.
Below in conjunction with embodiment, the content of the inventive method is described further.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the inventive method
Fig. 2 is the schematic flow sheet of the present embodiment
Fig. 3 is the structural representation of the nuisanceless disposal machine of the present embodiment
Embodiment
Referring to Fig. 1～3, in the present embodiment, the sterilization and deodorization reaction tank 2, opsonic reaction pond 3, complexing heavy metal reaction tank 4 and the storage pool 5 that mud are sequentially carried out continuously to nuisanceless disposal are sequentially arranged on pond body erecting frame 26.Mud enters sterilization and deodorization reaction tank 2 from being arranged on the mud entrance 1 on sterilization and deodorization reaction tank 2 tops, when entering, mud by proportioning, adds calcium oxide by being arranged on the chemicals feeder 7 of mud ingress, and stir with the stirrer 17 in the body of pond, make mud fully contact mixing once entering pond body with calcium oxide, mud under constantly stirring is in the process of outlet 14 motions of body bottom, pond, calcium oxide is killed the unwanted bacterias such as pathogenic bacteria contained in mud, parasite (ovum), eliminates mud because of foul smell corrupt and that fermentation produces.Mud after above-mentioned processing, by unhurried current passage 21, from the entrance 11 of the sludge conditioning reaction tank 3 on top, enter sludge conditioning reaction tank 3, mud mixes mutually and uses the stirrer 18 in the body of pond fully to stir with the amendment from chemicals feeder 8 when entering reaction tank 3, in the moving process toward outlet 15, complete chemical reaction, the shale of mud is regulated and makes it to be easy to dehydration.Then by unhurried current passage 22, from the entrance 12 on top, enter heavy metal processing reaction pond 4, mud enters Chi Shitong to be mixed mutually and uses the stirrer 19 in the body of pond fully to stir from the heavy metal treatment agent of chemicals feeder 9, at heavy metal in outlet 16 moving process, complete complexing, passivation etc. with treatment agent and react, generate stable complex compound.Mud after above-mentioned processing, through unhurried current passage 23, enters stabilization pond 5 and fully stirs with the stirrer 20 in the body of pond from the entrance 13 on top, and the physicochemical property of the mud after first three step process are stablized.Mud after above-mentioned nuisanceless disposal imports storage pool from the sludge outlet 6 lower than mud entrance 1 and stores.Add organic acid that the pH value of mud is adjusted to 6～9, make it the index request that is easy to dehydration and reaches pH value in national agricultural sludge A grade standard.Mud after storage is sent into two pressure filter press filtrations of alternation to water ratio 40%, obtains block mud.Block mud after press filtration is carried out to break process, and this break process is first sent in pulper, to blend the following left and right of diameter 10cm size, and then enters crusher in crushing to below diameter 1cm, is convenient to dry.Again the mud after fragmentation is sent into drying machine drying to water ratio 10-20%, then the small-particle mud after drying is pulverized or granulation obtains can be used as the sludge product that soil improvement and ecological protection are used.
Claims (2)
1. the method that sewage sludge harmlessness Treatment and recovery is applied, is characterized in that described method is:
1., mud imported to reaction tank sequentially carry out continuously the nuisanceless disposal of sterilization and deodorization, conditioning and complexing heavy metal,
2. the mud, after nuisanceless disposal imports storage pool and stores,
3., the mud after storing is sent into pressure filter press filtration to water ratio 30～40%, obtain block mud,
4., the block mud after press filtration is carried out to break process,
5., the mud after fragmentation is dried to water ratio and is reached 10-20%,
6., the mud after drying is pulverized to the sludge product that obtains can be used as soil improvement and ecological protection use.
2. the method that sewage sludge harmlessness Treatment and recovery as claimed in claim 1 is applied, is characterized in that described nuisanceless disposal is to be undertaken by following four steps:
1., first mud enter sterilization and deodorization reaction tank from being arranged on the mud entrance of pond body upper position, when mud enters, by being arranged on the chemicals feeder of mud ingress, by proportioning, adding medicine and stir, to kill the unwanted bacteria and the foul smell of eliminating sludge creation in mud
2., the mud after upper step process, from the outlet of below out, through unhurried current passage, from the mud entrance on top, enter sludge conditioning reaction tank, when mud enters, by being arranged on the chemicals feeder of mud ingress, by proportioning, adding amendment and fully stir
3., the mud after conditioning from the outlet of below out, by unhurried current passage, from the mud entrance on body top, pond, enter heavy metal processing reaction pond, when mud enters, by being arranged on the chemicals feeder of mud ingress, by proportioning, adding medicine and fully stir, heavy metal in mud is carried out to complex reaction
4., the mud of complex reaction after completing from the outlet of below out, through unhurried current passage, from the mud entrance on body top, pond, enter stabilization pond and fully stir, the physicochemical property of the mud after first three step process are stablized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410386438.8A CN104098244A (en) | 2014-08-07 | 2014-08-07 | Harmless treatment and recycling application method for sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410386438.8A CN104098244A (en) | 2014-08-07 | 2014-08-07 | Harmless treatment and recycling application method for sludge |
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| CN104098244A true CN104098244A (en) | 2014-10-15 |
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| CN201410386438.8A Pending CN104098244A (en) | 2014-08-07 | 2014-08-07 | Harmless treatment and recycling application method for sludge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105057342A (en) * | 2015-09-01 | 2015-11-18 | 钱作虎 | Method for preparing vegetation soil by utilizing residual sludge after metallic iron acidizing |
| CN109052879A (en) * | 2018-08-22 | 2018-12-21 | 国诚集团有限公司 | A kind of municipal sludge drying method |
| CN110642486A (en) * | 2019-11-01 | 2020-01-03 | 界首市官星环保科技有限公司 | Sludge treatment method |
-
2014
- 2014-08-07 CN CN201410386438.8A patent/CN104098244A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105057342A (en) * | 2015-09-01 | 2015-11-18 | 钱作虎 | Method for preparing vegetation soil by utilizing residual sludge after metallic iron acidizing |
| CN109052879A (en) * | 2018-08-22 | 2018-12-21 | 国诚集团有限公司 | A kind of municipal sludge drying method |
| CN110642486A (en) * | 2019-11-01 | 2020-01-03 | 界首市官星环保科技有限公司 | Sludge treatment method |
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Application publication date: 20141015 |