CN106977074A - A kind of fast dewatering conditioner and its preparation method and application - Google Patents
A kind of fast dewatering conditioner and its preparation method and application Download PDFInfo
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- CN106977074A CN106977074A CN201710296227.9A CN201710296227A CN106977074A CN 106977074 A CN106977074 A CN 106977074A CN 201710296227 A CN201710296227 A CN 201710296227A CN 106977074 A CN106977074 A CN 106977074A
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- sludge
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of fast dewatering conditioner and its preparation method and application, sludge dehydration speed more than 30% can be improved using the conditioner of the present invention, so as to reduce the one-time investment and energy consumption of plant equipment；Further, since the agricultural residues powder foot couple added is environmentally friendly, the calorific value of sludge after processing can also be improved, is conducive to the recycling treatment that sludge is follow-up；Sludge dehydration speed has a great impact to the energy consumption of mechanical dewatering equipment, improves sludge dehydration speed with regard to that can reduce mechanical dewatering equipment volume and shorten mechanical dewatering equipment run time, has vital effect for the energy consumption for saving sludge dewatering system.
Description
Technical field
The invention belongs to sludge dewatering technical field, more particularly to a kind of fast dewatering conditioner and preparation method thereof and should
With.
Background technology
Sludge is the final product of sewage disposal, with yield is big, content of organics is high, mud component is complicated, hydrophilic
Property strong, moisture content high (generally more than 95%~99%), the features such as volume is big, Treatment of Sludge has become sewage treatment plant and sunk
The financial burden of weight.Current specific resistance to filtration method mainly has burning, compost, landfill, comprehensive utilization, and at Treatment of Sludge
Before putting, it is necessary to carry out dewater treatment to sludge, it is therefore an objective to make solids enrichment, sludge volume is reduced, is the final disposal of sludge
Create conditions；Sludge conditioning can change the physics and chemical property of sludge, so as to improve the dewatering of sludge, reduce sludge
Moisture content after dehydration, is the key link of sludge dewatering.Usual sludge conditioning can be divided into physical modulated logos, chemical conditioning method,
The class of biological modulated logos three is combined with each other；Wherein, chemical conditioning method has that simple to operate, reaction speed is fast, technical maturity, effect
Good advantage, as a kind of most commonly used sludge conditioning method of current domestic and international application, wherein suitable efficient sludge dewatering
Conditioner is the core of chemical conditioning.At this stage, the sludge of China's sludge concentration tank is general frequently with the change with coagulation
Learn medicament (such as molysite, aluminium salt, polyacrylamide etc.) to nurse one's health sludge, these medicaments or bring heavy metal pollution,
Or with bio-toxicity, the following resourceization processing to sludge is all adversely affected.But existing sludge dehydration conditioner is more
It is that research is developed in terms of moisture percentage in sewage sludge after final dewatering, does not account for subsequently using mechanical dewatering equipment (such as band
Formula filter press, centrifugal dehydrator etc.) sludge is dehydrated and the energy consumption of decrement treatment and an investment problem；And improve sludge
Conditioner in terms of rate of water loss yet there are no exploitation." domestic sludge dehydration conditioner and Opsonizing method " (CN101985386A)
The Chinese patent literature of (application number 201010580468.4) discloses a kind of domestic sludge dehydration conditioner and Opsonizing method,
Formula is included：The polyacrylamide of pending mud dry weight 0.3%~0.9% is accounted for, pending mud dry weight 5%~20% is accounted for
Bamboo charcoal, accounts for the quaternary ammonium salt of pending mud dry weight 0.2%~1%, accounts for the quick lime of pending mud dry weight 2%~5% and accounts for
The polyaluminium sulfate of pending mud dry weight 5%~20%.Under normal temperature and pressure conditionses, institute is sequentially added into pending mud
Polyaluminium sulfate, quick lime and bamboo charcoal are stated, stirring reaction sequentially adds the polypropylene phthalein amine and quaternary ammonium after at least 5 minutes
Salt, is stirred at least 3 minutes, last press filtration.Sludge conditioning method in " domestic sludge dehydration conditioner and Opsonizing method "
The raw material being related to is more, and is not directed to the raising of sludge dehydration speed." a kind of agent of compound type sludge dehydrating and conditioning and its application
The Chinese patent literature of method " (CN105948457A) discloses a kind of compound type sludge dehydrating and conditioning agent, belongs to Treatment of Sludge
Technical field, is formed by sludge conditioner A and sludge conditioner B compoundings, and sludge conditioner A is compounded by the component of following weight parts
Form：20~30 parts of flyash, 10~20 parts of calcium lime powder, 10~20 parts of magnesia, 20~30 parts of PAFC, sludge
Conditioner B is the acetum of chitosan.The invention also discloses the application side using above-mentioned compound type sludge dehydrating and conditioning agent
Method.The component of sludge conditioner is also more in " a kind of compound type sludge dehydrating and conditioning agent and its application process ", adds flyash
Sludge afterwards is unfavorable for recycling, and the invention is also not directed to the raising of sludge dehydration speed.
To sum up, the big multicomponent processed complex of existing sludge conditioner, it is difficult to prepare；After many components added are to sludge
Continuous recycling is unfavorable；The energy consumption of subsequent mechanical equipment can not effectively be reduced and once invested.
The content of the invention
It is an object of the invention to provide a kind of fast dewatering conditioner and its preparation method and application, it is intended to improves sludge
Rate of water loss, so that the design size for solving the relatively low subsequent mechanical dehydration equipment brought of sludge dehydration speed is too big or runs
The problem of time is oversize.
The present invention is achieved in that a kind of application of fast dewatering conditioner, the application of the fast dewatering conditioner
It is 1 to be added into the sludge after sludge concentration tank is concentrated with over dry sludge quality ratio:1 conditioner；With 50r/min's
Speed stirs 10min, then stands 15min；Sludge after processing is subjected to subsequent mechanical equipment dehydration.
Another object of the present invention is to provide a kind of conditioner of the application of the fast dewatering conditioner, its feature exists
In the conditioner was that the moisture content of 120-200 mesh sieves is less than 5% maize straw powder.
Another object of the present invention is to provide a kind of preparation method of the conditioner, the preparation method of the conditioner
Comprise the following steps：
(1) maize straw is dried to moisture content and is less than 5%；
(2) corn straw smashing is obtained into maize straw powder with pulverizer；
(3) maize straw powder is crossed into 120 mesh sieves, after 140 mesh sieves, obtains the stalk powder of 120-140 mesh；After
160 mesh sieves, obtain the stalk powder of 140-160 mesh；After 180 mesh sieves, the stalk powder of 160-180 mesh is obtained；After 200 mesh
Sieve, obtains the stalk powder of 180-200 mesh.
Another object of the present invention is to provide the sludge of conditioner processing of the present invention.
Fast dewatering conditioner that the present invention is provided and its preparation method and application, can be carried using the conditioner of the present invention
High sludge dehydration speed more than 30%, so as to reduce the one-time investment and energy consumption of plant equipment；In addition, with existing sludge conditioning
Constituent species that agent is added are more, it is complicated to prepare and are likely to result in secondary pollution compares, the maize straw powder group of the invention added
Divide single, preparation simple and environmental sound, be conducive to sludge to be subsequently used as the recycling treatment of composting material；Maize straw
Calorific value is about 15000-17000kJ/kg, and the sludge calorific value of moisture content 80% is about 288kJ/kg or moisture content 50%
Sludge calorific value is about 4882kJ/kg, therefore the maize straw powder that the present invention is added can also improve the calorific value of sludge after processing,
Sludge is conducive to be subsequently used as the recycling treatment of fuel.It is of the invention effectively shorten that the dehydration of sludge subsequent mechanical equipment needs when
Between, in embodiment the relative dewatering time for being not added with conditioner of the present invention be respectively increased 38.24%, 41.18%,
44.12%, while providing the method that the conditioner is applied to sludge dewatering.
Brief description of the drawings
Fig. 1 is the preparation method flow chart of fast dewatering conditioner provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The application principle of the present invention is explained in detail below in conjunction with the accompanying drawings.
Fast dewatering conditioner provided in an embodiment of the present invention was the agricultural crop straw powder of 120-200 mesh sieves.
As shown in figure 1, the preparation method of fast dewatering conditioner provided in an embodiment of the present invention comprises the following steps：
S101：Maize straw is dried to moisture content and is less than 5%；
S102：With pulverizer by corn straw smashing, maize straw powder is obtained；
S103：Maize straw powder is crossed into 120 mesh sieves, after 140 mesh sieves, the stalk powder of 120-140 mesh is obtained；After
160 mesh sieves, obtain the stalk powder of 140-160 mesh；After 180 mesh sieves, the stalk powder of 160-180 mesh is obtained；After 200 mesh
Sieve, obtains the stalk powder of 180-200 mesh.
The application method of fast dewatering conditioner provided in an embodiment of the present invention is：To after sludge concentration tank is concentrated
Added and over dry sludge quality ratio about 1 in sludge:1 conditioner be (the over dry sludge contained in the conditioner and sludge of addition
Mass ratio is 1：1 or so.Because moisture percentage in sewage sludge is different, this above-mentioned ratio is just different, is free of so academicly generally using
I.e. the sludge over dry sludge of water is weighed.The moisture percentage in sewage sludge that usual concentration basin comes out between 95%-99%, that is,
Over dry sludge may only have 10-50 kilograms in 1 ton of mud)；10min is stirred with 50r/min speed, 15min is then stood；Will place
Sludge after reason carries out subsequent mechanical equipment dehydration.
The application principle of the present invention is further described with reference to specific embodiment.
Embodiment 1
200ml sludge concentration tanks sludge (moisture content 98%) is taken to add the maize straw powder 4 of 120-140 mesh sieves point
Gram, stir 10min under conditions of rotating speed is 50r/min, stand 15 minutes, do not had using vacuum filtration in 15 seconds after 21 minutes
Water droplet drips, and dehydrated sludge moisture content is 87.14%.Being not added with the control experiment of conditioner need to be filtered by vacuum after 34 minutes 15 seconds
Interior no water droplet drips, and dehydrated sludge moisture content is 84.11%.Compared to control group, change little feelings in moisture percentage in sewage sludge
Under condition, sludge dehydration speed 38.24% is improved.
Embodiment 2
200ml sludge concentration tanks sludge (moisture content 98%) is taken to add the maize straw powder 4 of 140-160 mesh sieves point
Gram, stir 10min under conditions of rotating speed is 50r/min, stand 15 minutes, do not had using vacuum filtration in 15 seconds after 20 minutes
Water droplet drips, and dehydrated sludge moisture content is 86.86%.Being not added with the control experiment of conditioner need to be filtered by vacuum after 34 minutes 15 seconds
Interior no water droplet drips, and dehydrated sludge moisture content is 84.11%.Compared to control group, change little feelings in moisture percentage in sewage sludge
Under condition, sludge dehydration speed 41.18% is improved.
Embodiment 3
200ml sludge concentration tanks sludge (moisture content 98%) is taken to add the maize straw powder 4 of 180-200 mesh sieves point
Gram, stir 10min under conditions of rotating speed is 50r/min, stand 15 minutes, do not had using vacuum filtration in 15 seconds after 19 minutes
Water droplet drips, and dehydrated sludge moisture content is 87.41%.Being not added with the control experiment of conditioner need to be filtered by vacuum after 34 minutes 15 seconds
Interior no water droplet drips, and dehydrated sludge moisture content is 84.11%.Compared to control group, change little feelings in moisture percentage in sewage sludge
Under condition, sludge dehydration speed 44.12% is improved.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (4)
1. a kind of application of fast dewatering conditioner, it is characterised in that the application of the fast dewatering conditioner is to by dirty
It is 1 to be added in sludge after mud thickener concentration with over dry sludge quality ratio:1 conditioner, is stirred with 50r/min speed
10min, then stands 15min；Sludge after processing is subjected to filter-press dehydration.
2. a kind of conditioner of the application of fast dewatering conditioner as claimed in claim 1, it is characterised in that the conditioner is
The moisture content for crossing 120-200 mesh sieves is less than 5% maize straw powder.
3. a kind of preparation method of conditioner as claimed in claim 2, it is characterised in that the preparation method of the conditioner includes
Following steps：
(1) maize straw is dried to moisture content and is less than 5%；
(2) corn straw smashing is obtained into maize straw powder with pulverizer；
(3) maize straw powder is crossed into 120 mesh sieves, after 140 mesh sieves, obtains the stalk powder of 120-140 mesh；After 160 mesh
Sieve, obtains the stalk powder of 140-160 mesh；After 180 mesh sieves, the stalk powder of 160-180 mesh is obtained；After 200 mesh sieves, obtain
To the stalk powder of 180-200 mesh.
4. a kind of sludge handled as conditioner described in claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710296227.9A CN106977074A (en) | 2017-04-28 | 2017-04-28 | A kind of fast dewatering conditioner and its preparation method and application |
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| CN201710296227.9A CN106977074A (en) | 2017-04-28 | 2017-04-28 | A kind of fast dewatering conditioner and its preparation method and application |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108409435A (en) * | 2018-04-27 | 2018-08-17 | 福建龙马环卫装备股份有限公司 | A kind of sludge aerobic compost method |
| CN110342781A (en) * | 2019-07-09 | 2019-10-18 | 河南工程学院 | Biomass modified system and its working method for sludge dewatering |
Citations (6)
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|---|---|---|---|---|
| FR2497790B1 (en) * | 1981-01-14 | 1985-03-29 | Loire Bretagne Agence Bassin | |
| CN101598339A (en) * | 2009-06-29 | 2009-12-09 | 浙江省环境保护科学设计研究院 | A kind of agricultural crop straw and sewage sludge conditioning incinerating are disposed the method for resource |
| CN101671588A (en) * | 2009-09-29 | 2010-03-17 | 天津紫荆能源技术有限责任公司 | Method for processing sludge resources |
| CN101781595A (en) * | 2010-03-05 | 2010-07-21 | 宁波双翼能源科技有限公司 | Production method of solid type fuel |
| CN104445854A (en) * | 2014-10-25 | 2015-03-25 | 傅小娟 | Sludge dewatering method and equipment |
| CN104445853A (en) * | 2014-10-25 | 2015-03-25 | 陈列鑫 | Method and equipment for realizing deep dehydration of sludge by using straws and sawdust |
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2017
- 2017-04-28 CN CN201710296227.9A patent/CN106977074A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2497790B1 (en) * | 1981-01-14 | 1985-03-29 | Loire Bretagne Agence Bassin | |
| CN101598339A (en) * | 2009-06-29 | 2009-12-09 | 浙江省环境保护科学设计研究院 | A kind of agricultural crop straw and sewage sludge conditioning incinerating are disposed the method for resource |
| CN101671588A (en) * | 2009-09-29 | 2010-03-17 | 天津紫荆能源技术有限责任公司 | Method for processing sludge resources |
| CN101781595A (en) * | 2010-03-05 | 2010-07-21 | 宁波双翼能源科技有限公司 | Production method of solid type fuel |
| CN104445854A (en) * | 2014-10-25 | 2015-03-25 | 傅小娟 | Sludge dewatering method and equipment |
| CN104445853A (en) * | 2014-10-25 | 2015-03-25 | 陈列鑫 | Method and equipment for realizing deep dehydration of sludge by using straws and sawdust |
Non-Patent Citations (3)
| Title |
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| SHAODONG GUO 等: "Effects of agricultural waste-based conditioner on ultrasonic-aided activated sludge dewatering", 《RSC ADVANCES》 * |
| 仇元 等: "粉煤灰及生物质对污泥脱水性能的影响试验研究", 《化工装备技术》 * |
| 化学工业部环境保护设计技术中心站: "《化工环境保护设计手册》", 30 June 1998, 化学工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108409435A (en) * | 2018-04-27 | 2018-08-17 | 福建龙马环卫装备股份有限公司 | A kind of sludge aerobic compost method |
| CN110342781A (en) * | 2019-07-09 | 2019-10-18 | 河南工程学院 | Biomass modified system and its working method for sludge dewatering |
| CN110342781B (en) * | 2019-07-09 | 2024-01-26 | 河南工程学院 | Biomass modification system for sludge dewatering and working method thereof |
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Application publication date: 20170725 |