CN101955312B - Sludge conditioner and using method thereof - Google Patents
Sludge conditioner and using method thereof Download PDFInfo
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- CN101955312B CN101955312B CN2010105109939A CN201010510993A CN101955312B CN 101955312 B CN101955312 B CN 101955312B CN 2010105109939 A CN2010105109939 A CN 2010105109939A CN 201010510993 A CN201010510993 A CN 201010510993A CN 101955312 B CN101955312 B CN 101955312B
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Abstract
The invention relates to the technical field of wastewater sludge treatment, in particular to a sludge conditioner added with biological enzymes and a method for treating biochemical sludge by using the sludge conditioner. The sludge conditioner comprises the following main components in percentage by weight: 0.95 to 0.99 percent of acid, 0.01 to 0.05 percent of mixed cellulase and hemicellulase, and the balance of water. The method comprises the following steps of: adding the sludge conditioner into water-containing sludge, uniformly stirring and performing mechanical dehydration. The dryness of the sludge can be improved from 20-30 percent to 40-50 percent under the same pressing condition. The sludge conditioner and the method solve the problem of deep dehydration of papermaking biochemical sludge; and the dehydrated sludge can be used as the raw material of soil utilization or a biomass incinerator.
Description
Technical field
The present invention relates to the wastewater sludge processing technology field, be specifically related to a kind of sludge conditioner that adds enzyme and handle the method for biochemical sludge with it.
Background technology
Paper mill sludge is the end product that emits after paper mill effluent is handled, and comprises primary sludge, biochemical sludge and deinked sludge.Advanced enterprises in pulp and paper industry is produced slurry paper per ton and is produced waste water 10-20m approximately
3, handle waste water per ton and produce 3.6kg over dry mud approximately, 2009, producing paper mill sludge per year was ten thousand tons of 311-622, visible, the sludge quantity that enterprises in pulp and paper industry produces is very big.
Up to now, the method disposed of paper mill sludge mainly contains row sea, landfill, agricultural and burning etc.The prerequisite of sludge composting, burning or other recycling is will certain mass dryness fraction be arrived in sludge dewatering, and is a lot of to the method for sludge dewatering treatment both at home and abroad at present, and mummification dehydration, mechanical dehydration etc. are arranged.The energy consumption of mummification dehydration and integrated operation expense be all than higher, and how the water ratio with mechanical means reduction mud is the direction of environmental protection circle effort always.
At present; Can realize papermaking primary sludge or the decline of deinked sludge filter cake moisture content being reached below 50% through taking to improve the measures of dewatering pressure, assurance dewatering time, avoiding back wetting, reduce these four aspects of dehydration resistance with mechanical force; Can be concerning the papermaking biochemical sludge; Filter cake moisture content is difficult to drop to below 60%; This is because the solid particulate of papermaking biochemical sludge is mainly zoogloea, granule sludge, colloidal particle, fiber fines and transistion metal compound, forms complex structure, and is strong with the avidity of water.It is little to adopt traditional inorganic or organic sludge amendment that papermaking biochemical sludge dewatering is improved.
Summary of the invention
In order to overcome above-mentioned defective; The invention provides and a kind ofly improve the sludge conditioner of dewatering performance of sludge and use its sludge treatment method; After stirring in the sludge conditioner adding water-containing sludge of the present invention, carry out mechanical dehydration, under identical press filtration condition, can make the mud mass dryness fraction bring up to 40-50% from 20-30%; The invention solves the problem of deeply dehydrating sludge, the mud after the dehydration can be used as the raw material of soil utilization or biomass incinerator.
Technical scheme of the present invention is: a kind of sludge conditioner, comprise by weight below several kinds of components: sour 0.95-0.99%, Mierocrystalline cellulose and half blending in of fibers enzyme 0.01-0.05%, surplus is a water.
Described acid can be the acid that acetic acid, hydrochloric acid, sulfuric acid, Hydrocerol A etc. are commonly used to regulate pH value, is preferably acetic acid, and acetic acid can be selected Glacial acetic acid min. 99.5 or industrial acetic acid.
The method of use of described sludge conditioner, step are to pass through aerobic or anaerobic digestion; Prepare to get into the mud before the sludge thickener, add sludge conditioner, under 30-40 ℃ of condition continuously stirring 120-240 minute; Stirring velocity is 50-100 rev/min, and post precipitation carries out press filtration.
Described sludge conditioner with the ratio of mixture of the mud of handling is: 1:50-1:200, preferred proportion are 1:100.
The ratio of described sludge conditioner effective constituent and over dry mud is 0.25%-1%.
Beneficial effect of the present invention is: sludge conditioner of the present invention by the acid constituents in the amendment and enzyme to (the Extracellular polymeric substance of the extracellular polymeric in the papermaking biochemical sludge; EPS) carry out extracting and destruction; Mud combination water content is reduced; The moisture (combination water) that makes a part be difficult to deviate from mechanical means has become the moisture (free water) that is prone to deviate from; Amendment has also carried out modification to colloid in the mud and fiber fines simultaneously, has increased the filtration velocity of water in the mud.After amendment is handled, handle and can the paper mill sludge mass dryness fraction be increased substantially through filter-press dehydration, mass dryness fraction is 40-50% behind the sludge press filtration after amendment is handled, and is significantly less than the sludge filter cake water ratio of prior art.
Description of drawings:
Shown in Figure 1 is the schema of the embodiment of the invention 2.
Embodiment
For a better understanding of the present invention, further specify, but the institute of the present invention scope of application is not limited to the scope that this instance is put down in writing below in conjunction with specific examples.
Embodiment 1:
Take by weighing papermaking biochemical sludge sample to be nursed one's health in the beaker of 2000ml; The papermaking biochemical sludge is taken from into preceding (as shown in Figure 1) of sludge thickener; Add a certain amount of sludge conditioner, under 30-40 ℃ of condition continuously stirring 120-240 minute, stirring velocity was 50-100 rev/min; Post precipitation pushes with laboratory self-control filtering equipment (see figure 2), and pressure is controlled at 5.6Kgf/cm
2, time of filter pressing is 4 minutes, each test uses water-containing sludge to be 1000g.Experimental result shows, is 20-30% without mass dryness fraction behind the sludge press filtration of amendment processing, and mass dryness fraction is 45-50% behind the sludge press filtration after amendment is handled.
Embodiment 2:
Paper mill sludge is through after the aerobic or anaerobic digestion, the ratio of sludge conditioner of the present invention according to 1:100 added before preparing to get into sludge thickener under 30-40 ℃ of condition continuously stirring 120-240 minute; Stirring velocity is 50-100 rev/min; Post precipitation gets into sludge thickener, and through the press filtration of sludge press filtration machine, pressure is controlled at 5.6Kgf/cm2 again; Time of filter pressing is 4 minutes, and the sludge filter cake mass dryness fraction is 45-50% behind the sludge press filtration.
Claims (3)
1. the method for use of a sludge conditioner is characterized in that, step does; To pass through aerobic or anaerobic digestion, prepare to get into the preceding mud of sludge thickener, add sludge conditioner; Under 30-40 ℃ of condition continuously stirring 120-240 minute, stirring velocity was 50-100 rev/min, and post precipitation carries out press filtration; Wherein sludge conditioner by by weight below several kinds of components form: acetic acid 0.95-0.99%, Mierocrystalline cellulose and half blending in of fibers enzyme 0.01-0.05%, surplus is a water.
2. the method for use of a kind of sludge conditioner according to claim 1 is characterized in that, described sludge conditioner with the ratio of mixture of the mud of handling is: 1:50-1:200.
3. the method for use of a kind of sludge conditioner according to claim 1 is characterized in that, the ratio of described sludge conditioner effective constituent and over dry mud is 0.25%-1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105109939A CN101955312B (en) | 2010-10-19 | 2010-10-19 | Sludge conditioner and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105109939A CN101955312B (en) | 2010-10-19 | 2010-10-19 | Sludge conditioner and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101955312A CN101955312A (en) | 2011-01-26 |
| CN101955312B true CN101955312B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105109939A Active CN101955312B (en) | 2010-10-19 | 2010-10-19 | Sludge conditioner and using method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897987B (en) * | 2012-10-17 | 2014-01-08 | 山东轻工业学院 | Papermaking sludge dehydration composite biological enzyme treating agent and processing method |
| CN105837005B (en) * | 2016-06-13 | 2018-05-25 | 山东省科学院能源研究所 | Municipal biological dewatered organic conditioner of excess sludge and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1686875A (en) * | 2005-04-07 | 2005-10-26 | 上海静安新建材科研所有限公司 | Method for treating sludge in pipe trench |
| CN101255000A (en) * | 2007-11-29 | 2008-09-03 | 深圳市东风龙澄环卫设备有限公司 | Novel method for biological sludge dehydration by perforation condensation technology |
| CN101495192A (en) * | 2005-09-02 | 2009-07-29 | 诺维信北美公司 | Methods for enhancing the dewaterability of sludge with alpha-amylase treatment |
-
2010
- 2010-10-19 CN CN2010105109939A patent/CN101955312B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1686875A (en) * | 2005-04-07 | 2005-10-26 | 上海静安新建材科研所有限公司 | Method for treating sludge in pipe trench |
| CN101495192A (en) * | 2005-09-02 | 2009-07-29 | 诺维信北美公司 | Methods for enhancing the dewaterability of sludge with alpha-amylase treatment |
| CN101255000A (en) * | 2007-11-29 | 2008-09-03 | 深圳市东风龙澄环卫设备有限公司 | Novel method for biological sludge dehydration by perforation condensation technology |
Non-Patent Citations (1)
| Title |
|---|
| 张伟军等.利用生物方法改善污泥脱水性.《安徽农学通报》.2010,第16卷(第3期),37-39. * |
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| CN101955312A (en) | 2011-01-26 |
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