CN101857353B - Processing method for sludge with high water content - Google Patents
Processing method for sludge with high water content Download PDFInfo
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- CN101857353B CN101857353B CN2010102156016A CN201010215601A CN101857353B CN 101857353 B CN101857353 B CN 101857353B CN 2010102156016 A CN2010102156016 A CN 2010102156016A CN 201010215601 A CN201010215601 A CN 201010215601A CN 101857353 B CN101857353 B CN 101857353B
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- dewatered sludge
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Abstract
The invention relates to a processing method for sludge with high water content, which comprises the following steps: firstly conveying dewatered sludge containing over 90 percent of water generated by a sewage treatment plant to a first mixing tank, adding quick lime in the first mixing tank, adjusting the PH of dewatered sludge to 6.9-7.1, pumping dewatered sludge with adjusted PH into a secondmixing tank with a slurry pump, adding 13-14 percent of coal ash and 0.9-1 percent of wood flour in the second mixing tank according to the mass percentage, mixing uniformly, conveying dewatered sludge in the second mixing tank into a membrane chamber-type filter press via a sludge pump to make dewatered sludge in the machine body of the membrane chamber-type filter press dehydrate further, and then obtaining sludge filter cakes with the water content of less than 35% and the heat productivity of over 2000 Kcal/Kg. With the processing method for sludge with high water content, the sludge can be dehydrated to be with the water content of less than 35%, the heat productivity can be increased to be more than 2000 Kcal/Kg. As a result, the sludge can be doped with the coal for burning in the boiler, thereby realizing the waste recycling and avoiding the environmental pollution.
Description
Technical field
The present invention relates to the treatment process of mud, is a kind of treatment process of high water content sludge specifically.Said high-moisture percentage is meant that water ratio is more than 90%.
Background technology
In coastal flourishing city, its industry is flourishing, and especially marine chemical industry enterprise is more, certainly will cause the complicacy of industrial sewage composition.Contain a kind of composition that is seaweed gel in this type of sewage, its viscosity is big, and dehydration is difficult, and the sewage work's final dewatering moisture percentage in sewage sludge that causes coastal flourishing city is up to 90%.In the past few years, adopt the way of the landfill of digging pit to handle mud always, caused secondary pollution.
Summary of the invention
To the defective that exists in the prior art; The object of the present invention is to provide a kind of treatment process of high water content sludge, mud is further dewatered to water ratio below 35%, thermal value is increased to 2000 kilocalories/more than the kilogram; Reach and to mix together with coal; Get into the purpose of boiler combustion, thereby realized utilization of waste material, avoided environmental pollution.
For reaching above purpose, the technical scheme that the present invention takes is:
A kind of treatment process of high water content sludge is characterized in that, may further comprise the steps:
The moisture dewatered sludge more than 90% that earlier sewage work is produced is sent into first agitated pool,
In first agitated pool, add unslaked lime, pH value to 6.9～7.1 of adjustment dewatered sludge,
Dewatered sludge with the slag stock pump will be adjusted behind the pH value is squeezed into second agitated pool,
In second agitated pool, add 13～14% flyash, 0.9～1% wood powder by mass percentage, stir,
With sludge pump the dewatered sludge in second agitated pool is sent into diaphragm filter press, makes that dewatered sludge further dewaters in the body of diaphragm filter press, obtain water ratio below 35%, thermal value is at the sludge filter cake of 2000 kilocalories/more than the kilogram.
On the basis of technique scheme; With sludge pump the dewatered sludge in second agitated pool is sent into diaphragm filter press; Dewatered sludge pressure is to 0.8MPa in the body of diaphragm filter press, with reference to the streamflow regime of filtered water, and the water filling in diaphragm filter press of water drum pressure membrane pump; Make the interior dewatered sludge pressure of body of diaphragm filter press increase to 1.2MPa
Pressurize 4h makes that dewatered sludge further dewaters in the body of diaphragm filter press, obtain water ratio below 35%, thermal value is at the sludge filter cake of 2000 kilocalories/more than the kilogram.
On the basis of technique scheme, said sludge pump is the high pressure sludge pump.
The treatment process of high water content sludge of the present invention is further dewatered to water ratio below 35% mud, and thermal value is increased to 2000 kilocalories/more than the kilogram; Reach and to mix together with coal; Get into the purpose of boiler combustion, thereby realized utilization of waste material, avoided environmental pollution.
Description of drawings
The present invention has following accompanying drawing:
The schematic flow sheet of the treatment process of Fig. 1 high water content sludge,
Fig. 2 diaphragm filter press treating processes synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explain.
Fig. 1 is the schematic flow sheet of the treatment process of high water content sludge of the present invention,
The moisture dewatered sludge 90% or more that earlier sewage work is produced is sent into first agitated pool, and the moisture dewatered sludge more than 90% of said sewage work generation refers to the dewatered sludge that contains the seaweed gel composition of coastal marine chemical industry enterprise output especially,
In first agitated pool, add unslaked lime, pH value to 6.9～7.1 of adjustment dewatered sludge, this sewage work's dewatered sludge is because of showing weak acid, so need to add the unslaked lime neutralization, the concrete add-on of unslaked lime is decided according to the pH value of dewatered sludge,
Dewatered sludge with the slag stock pump will be adjusted behind the pH value is squeezed into second agitated pool,
In second agitated pool, add 13～14% flyash, 0.9～1% wood powder by mass percentage, stir,
With sludge pump the dewatered sludge in second agitated pool is sent into diaphragm filter press, makes that dewatered sludge further dewaters in the body of diaphragm filter press, obtain water ratio below 35%, thermal value is at the sludge filter cake of 2000 kilocalories/more than the kilogram.
On the basis of technique scheme; As shown in Figure 2, with sludge pump the dewatered sludge in second agitated pool is sent into diaphragm filter press, dewatered sludge pressure is to 0.8MPa in the body of diaphragm filter press; Streamflow regime with reference to filtered water; The water filling in diaphragm filter press of water drum pressure membrane pump makes the interior dewatered sludge pressure of body of diaphragm filter press increase to 1.2MPa
Pressurize 4h makes that dewatered sludge further dewaters in the body of diaphragm filter press, obtain water ratio below 35%, thermal value is at the sludge filter cake of 2000 kilocalories/more than the kilogram.Sludge filter cake can directly be served the conveyor transmission in the diaphragm filter press after the discharging.
With sludge pump the dewatered sludge in second agitated pool is sent into diaphragm filter press; Dewatered sludge pressure is to 0.8MPa in the body of diaphragm filter press; Streamflow regime with reference to filtered water; The water filling in diaphragm filter press of water drum pressure membrane pump makes the interior dewatered sludge pressure of body of diaphragm filter press increase to 1.2MPa
Pressurize 4h makes that dewatered sludge further dewaters in the body of diaphragm filter press, obtain water ratio below 35%, thermal value is at the sludge filter cake of 2000 kilocalories/more than the kilogram.
On the basis of technique scheme, said sludge pump is the high pressure sludge pump.
Below be several specific embodiment of the present invention:
Embodiment 1:
Dewatered sludge (moisture 90%) 31.35t that the pending sewage work in one pond produces adds 5% unslaked lime, and the adjustment pH value is 7.
Behind the adjustment pH value, dewatered sludge gross weight 33t, water accounts for 29.7t, and mud accounts for 3.3t,
In the dewatered sludge behind the adjustment pH value,, stir with addition of 4.5t flyash (13.64%) and 0.3t wood powder (0.91%),
Send into diaphragm filter press and carry out filter-press dehydration and handle, it is moisture 35% to handle the back filter cake, records through oxygen bomb calorimeter, and thermal value is 2092 kilocalories/kg.
Embodiment 2:
Dewatered sludge (moisture 90%) 9.52t that the pending sewage work in one pond produces adds 0.48t unslaked lime (5%), and the adjustment pH value is 6.9.
Behind the adjustment pH value, dewatered sludge gross weight 10.02t, water accounts for 6.92t, and mud accounts for 3.1t,
In the dewatered sludge behind the adjustment pH value,, stir with addition of 1.33t flyash (13.97%) and 0.09t wood powder (0.95%),
Send into diaphragm filter press and carry out filter-press dehydration and handle, it is moisture 35% to handle the back filter cake, records through oxygen bomb calorimeter, and thermal value is 2015 kilocalories/kg.
Claims (3)
1. the treatment process of a high water content sludge is characterized in that, may further comprise the steps:
The moisture dewatered sludge more than 90% that earlier sewage work is produced is sent into first agitated pool; Said moisture dewatered sludge more than 90% is the apparent weakly acidic moisture dewatered sludge more than 90% that the sewage that contains the seaweed gel composition with coastal marine chemical industry enterprise output obtains after sewage work handles
In first agitated pool, add unslaked lime, pH value to 6.9～7.1 of adjustment dewatered sludge,
Dewatered sludge with the slag stock pump will be adjusted behind the pH value is squeezed into second agitated pool,
In second agitated pool, add 13～14% flyash, 0.9～1% wood powder by mass percentage, stir,
With sludge pump the dewatered sludge in second agitated pool is sent into diaphragm filter press, makes that dewatered sludge further dewaters in the body of diaphragm filter press, obtain water ratio below 35%, thermal value is at the sludge filter cake of 2000 kilocalories/more than the kilogram.
2. the treatment process of high water content sludge as claimed in claim 1; It is characterized in that: the dewatered sludge in second agitated pool is sent into diaphragm filter press with sludge pump; Dewatered sludge pressure is to 0.8MPa in the body of diaphragm filter press, with reference to the streamflow regime of filtered water, and the water filling in diaphragm filter press of water drum pressure membrane pump; Make the interior dewatered sludge pressure of body of diaphragm filter press increase to 1.2MPa
Pressurize 4h makes that dewatered sludge further dewaters in the body of diaphragm filter press, obtain water ratio below 35%, thermal value is at the sludge filter cake of 2000 kilocalories/more than the kilogram.
3. according to claim 1 or claim 2 the treatment process of high water content sludge, it is characterized in that: said sludge pump is the high pressure sludge pump.
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| CN2010102156016A CN101857353B (en) | 2010-07-02 | 2010-07-02 | Processing method for sludge with high water content |
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| CN2010102156016A CN101857353B (en) | 2010-07-02 | 2010-07-02 | Processing method for sludge with high water content |
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| CN101857353B true CN101857353B (en) | 2012-09-12 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126820A (en) * | 2011-01-24 | 2011-07-20 | 景津压滤机集团有限公司 | Sludge dewatering membrane filter press and filtration method thereof |
| CN102649618A (en) * | 2011-02-24 | 2012-08-29 | 杭州富江过滤机有限公司 | Method for treating sewage sludge by wood chips |
| CN102153266A (en) * | 2011-02-24 | 2011-08-17 | 韩承宏 | Method for treating sewage sludge with diatom |
| CN102358680A (en) * | 2011-10-14 | 2012-02-22 | 安徽山鹰纸业股份有限公司 | Dehydration method for papermaking waste water sludge |
| CN102643002A (en) * | 2012-03-07 | 2012-08-22 | 临沂市金沂蒙生物科技有限公司 | Environmentally-friendly treatment method of bad alcohol mud |
| CN102942294A (en) * | 2012-12-01 | 2013-02-27 | 新余钢铁集团有限公司 | Method for treating ferromanganese blast furnace gas sludge |
| CN103288327A (en) * | 2013-06-06 | 2013-09-11 | 江苏富大环境科技有限公司 | Sludge treatment method |
| CN103739182B (en) * | 2013-12-26 | 2015-03-18 | 浙江华章科技有限公司 | Dehydration method of heterogeneous sludge |
| CN105502878A (en) * | 2015-12-16 | 2016-04-20 | 苏州捷宁模塑有限公司 | Filler for sludge modification deep treatment pond |
| CN106082584A (en) * | 2016-08-10 | 2016-11-09 | 山东华泰纸业股份有限公司 | A kind of proportioning process being applicable to pulping wastewater treatment sludge drying |
| CN110372396B (en) * | 2019-08-05 | 2022-02-08 | 武汉钢铁有限公司 | Integrated process method for sludge dewatering and ceramsite firing preparation of comprehensive wastewater of iron and steel plant |
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| CN1187528A (en) * | 1996-03-29 | 1998-07-15 | 沈阳油田实业集团 | Process for preparing briquette combustion supporting powder |
| CN1227207A (en) * | 1999-01-22 | 1999-09-01 | 昆明理工大学 | Technical process for producing light haydite |
| CN1810940A (en) * | 2006-03-03 | 2006-08-02 | 清华大学 | Sludge fuel stick and its prepn |
| JP2007306844A (en) * | 2006-05-18 | 2007-11-29 | Kawasaki Plant Systems Ltd | Method for producing greening material using waste material, and greening material |
| KR100854587B1 (en) * | 2007-04-06 | 2008-08-27 | 김현구 | Fertilizer composition using ash |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1187528A (en) * | 1996-03-29 | 1998-07-15 | 沈阳油田实业集团 | Process for preparing briquette combustion supporting powder |
| CN1227207A (en) * | 1999-01-22 | 1999-09-01 | 昆明理工大学 | Technical process for producing light haydite |
| CN1810940A (en) * | 2006-03-03 | 2006-08-02 | 清华大学 | Sludge fuel stick and its prepn |
| JP2007306844A (en) * | 2006-05-18 | 2007-11-29 | Kawasaki Plant Systems Ltd | Method for producing greening material using waste material, and greening material |
| KR100854587B1 (en) * | 2007-04-06 | 2008-08-27 | 김현구 | Fertilizer composition using ash |
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