CN109293217A - A kind of conditioner and its preparation method and application for sludge dewatering - Google Patents
A kind of conditioner and its preparation method and application for sludge dewatering Download PDFInfo
- Publication number
- CN109293217A CN109293217A CN201811377942.6A CN201811377942A CN109293217A CN 109293217 A CN109293217 A CN 109293217A CN 201811377942 A CN201811377942 A CN 201811377942A CN 109293217 A CN109293217 A CN 109293217A
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- China
- Prior art keywords
- mud
- conditioner
- sludge dewatering
- cpam
- metal oxide
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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
-
- 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
- C02F11/02—Biological treatment
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention provides a kind of conditioner and its preparation method and application for sludge dewatering, the component of sludge dewatering conditioner are as follows: microbial flocculant NOC-1；Metal oxide CaO, Al2O3、Fe2O3,MgO；Nonmetal oxide SiO2、SO3；And cationic polyacrylamide (CPAM).The conditioner of sludge dewatering can structural behaviour to the mud mud containing a large amount of moisture content, water reason characteristic, physical mechanics property can be carried out inherent conditioning, build a kind of endogenous environmental condition for facilitating mud slurry dewatering.Realization allows mud high speed dewatering of slurries under conditions of using mechanical equipment.The present invention also provides the preparation methods of this kind of sludge dewatering conditioner: cultivating microbial flocculant under conditions set using rhodococcus erythropolis；Metal oxide and nonmetal oxide are subjected to high-temperature roasting again, make it have required activity, then it is prepared by determining component and the mass component determined, and levigate to required fineness, is used cooperatively cationic polyacrylamide (CPAM) solution.
Description
Technical field
The present invention relates to it is a kind of improvement river,lake and reservior water environment field in sludge dewatering sludge dewatering conditioner and its
Preparation method and purposes.
Background technique
In recent years, as national urbanization, industrialization development process quickly propel, pollutant discharge amount, kind in water body
Class increases year by year, and run-off reduces year by year, and discharge of major pollutant amount is much larger than river environment capacity, has influenced national economy
The sustainable development of society.The systemic comprehensive treatment for implementing river,lake and reservior, fundamentally improves water environment, it has also become society is high
The major issue important affair that degree concern, the masses look forward to strongly.Eight large watersheds in China especially Yangtze River Delta, Delta of Pearl River
River network, with the fast development of landing pit industrial or agricultural, a large amount of industrial and agricultural wastewaters passed through number of ways and flow into water body.Due to river
The ability of river and lake library hydrodynamic force and load contaminant species amount is lacked of proper care, and pollutant is caused finally to be deposited into Sediments, and
Gradually accumulation forms the sedimentary of serious pollution mud.Thus many rivers are generated, water eutrophication occurs in lake, frequent hair
Raw wawter bloom phenomenon, water bodies of rivers and lakes is black smelly and brings disaster to bed mud, has seriously affected resident living, city image and urban ecology ring
Border.
Black and odorous water directly pollutes the bed mud with its one, and river,lake and reservior sludge pollution problem is to social economy and life
State environment and people occupy life and cause very big stress and pressure, and river and lake silt produces the further development in city really
Biggish negative effect.Therefore, river and lake dredging and " minimizing " to contaminated mud, " innoxious ", " stabilisation ", " resource
Change " processing disposition has become one extremely urgent vital task of current government agencies at all levels.
Traditional sludge dewatering technique has been not suitable for the rate of socio-economic development now: the used time is too long, take up a large area,
Processing be not thorough, secondary pollution.Major reason among these is that the dehydration of mud is difficult.For that purpose it is necessary to select targetedly
Preparation improves mud, builds the environment that solid particle and appended moisture are easily isolated in mud, makes it as far as possible
Moisture contained by mud is removed in a short time, and here it is spirit of the invention.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned problems of the prior art, a kind of conditioning for sludge dewatering is provided
The conditioner of agent and its preparation method and application, sludge dewatering of the present invention can be to the structural of the mud mud containing a large amount of moisture content
Energy, water reason characteristic, physical mechanics property can be carried out inherent conditioning, build a kind of endogenous environment for facilitating mud slurry dewatering
Condition, realization allow mud high speed dewatering of slurries under conditions of using mechanical equipment.
A kind of conditioner for sludge dewatering, is made of microbial flocculant NOC-1 and chemical floc；The change
Learn flocculant each component percentage meter by weight, total amount 100%；It is characterized by:
Microbial flocculant NOC-1, concentration are 10mg/L (NOC-1 mass/mud volume)；
Metal oxide CaO, Al2O3、Fe2O3, MgO, mass component is respectively as follows: CaO 11.8~28.2%, Al2O3
13.2~23.4%, Fe2O35.5~16.8%, MgO2.5~3.6%；
Nonmetal oxide SiO2、SO3, SiO2With SiO3 2-Form exists, SO3With SO4 2-Form exists, mass component
It is respectively as follows: SiO241.4~46.4%, SO32.8~7.0%；
Cationic polyacrylamide (CPAM) 0.2%.
A kind of conditioner preparation method for sludge dewatering, it is characterised in that sequentially include the following steps:
Step 1, the preparation of microbial flocculant NOC-1:
Select rhodococcus erythropolis as strain, using water-insoluble carbon source and inorganic nitrogen-sourced, 25~32 DEG C, pH 8.5~
9.5,0.3~0.5L/min of blast rate, 100~200r/min of stirring rate are cultivated；The water-insoluble carbon source is
Olive oil, described is inorganic nitrogen-sourced for urea or ammonium sulfate；
Step 2, metal oxide and nonmetal oxide the finished product preparation of chemical floc:
1. by metal oxide and nonmetal oxide respectively in roaster in 1150 DEG C of roasting temperature 2h；
2. substance made from step 1 is cooled to room temperature, the constituent mass determined when by operation is configured to mixture；
3. the mixture that step 2 is made is milled to fine powder, and specific surface area >=400m2/kg；
4. metal oxide made from mix step 3 and nonmetal oxide fine powder, uniformly rear to obtain chemical floc
Metal oxide and nonmetal oxide finished product；
Step 3, the cationic polyacrylamide preparation of chemical floc:
The constituent mass proportion determined when by operation weighs cationic polyacrylamide (CPAM), presses water when dissolving CPAM:
The ratio dissolution of CPAM=1000:2 is spare.
A kind of conditioner purposes for sludge dewatering, it is characterised in that: in use, 10mg first is added in every liter of mud
Microbial flocculant NOC-1 pretreatment need the mud that is dehydrated；Chemical floc is reused, when using chemical floc, often
2~5kg chemical floc, charging sequence are as follows: first add the metal oxide and Fei Jin of chemical floc are added in 100kg mud
Belong to oxide finished product, then addition polymerization acrylamide (CPAM), time interval is 1~2 minute；Plate compression is used again after mix is uniform
Machine filter-press dehydration.
The conditioner of sludge dewatering of the present invention can to containing a large amount of moisture content mud mud structural behaviour, water reason characteristic,
Physical mechanics property can be carried out inherent conditioning, build a kind of endogenous environmental condition for facilitating mud slurry dewatering, realize
Using allowing mud high speed dewatering of slurries under conditions of mechanical equipment.
Specific embodiment
Table 1. be the chemical floc of the embodiment of the present invention 1~3 it is raw materials used and proportion.
Each embodiment of table 1 is raw materials used and matches unit: %
2. column datas of table are by 1~embodiment of embodiment, 3 chemical floc in table 1. is raw materials used and quality proportioning
The result that moral gushes sludge dewatering disposition is hunted to Guangzhou with microbial flocculant NOC-1 respectively.
The result that table 2 disposes sludge dewatering
NOC-1's the preparation method comprises the following steps: selecting red put down red ball to microbial flocculant used in the above embodiment of the present invention 1-3
Bacterium is as strain, using water-insoluble carbon source olive oil and inorganic nitrogen-sourced urea, in 25~32 DEG C, pH 8.5~9.5, air blast speed
0.3~0.5L/min of rate, 100~200r/min of stirring rate are cultivated to obtain.
The metal oxide and nonmetal oxide finished product system of chemical floc used in the above embodiment of the present invention 1-3
Preparation Method are as follows:
1. by metal oxide and nonmetal oxide respectively in roaster in 1150 DEG C of roasting temperature 2h；
2. substance made from step 1 is cooled to room temperature, the constituent mass determined when by operation is configured to mixture；
3. the mixture that step 2 is made is milled to fine powder, and specific surface area >=400m2/kg；
4. metal oxide made from mix step 3 and nonmetal oxide fine powder, uniformly rear to obtain chemical floc
Metal oxide and nonmetal oxide finished product；
The cationic polyacrylamide preparation method of chemical floc used in the above embodiment of the present invention 1-3:
The constituent mass proportion determined when by operation weighs cationic polyacrylamide (CPAM), presses water when dissolving CPAM:
The ratio dissolution of CPAM=1000:2 is spare.
A kind of conditioner purposes for sludge dewatering, in use, the microorganism wadding of 10mg is first added in every liter of mud
The mud that solidifying agent NOC-1 pretreatment needs to be dehydrated；Chemical floc is reused, when using chemical floc, in every 100kg mud
Be added 2.5kg chemical floc, charging sequence are as follows: first add chemical floc metal oxide and nonmetal oxide at
Product, then addition polymerization acrylamide (CPAM), time interval are 1~2 minute；It is de- with plate and frame filter press filters pressing again after mix is uniform
Water.
Claims (3)
1. a kind of conditioner for sludge dewatering, is made of microbial flocculant NOC-1 and chemical floc；The chemistry
Flocculant each component percentage meter by weight, total amount 100%；It is characterized by:
Microbial flocculant NOC-1, concentration are 10mg/L (NOC-1 mass/mud volume)；
Metal oxide CaO, Al2O3、Fe2O3, MgO, mass component is respectively as follows: CaO 11.8~28.2%, Al2O3 13.2
~23.4%, Fe2O35.5~16.8%, MgO 2.5~3.6%；
Nonmetal oxide SiO2、SO3, SiO2With SiO3 2-Form exists, SO3With SO4 2-Form exists, mass component difference
Are as follows: SiO241.4~46.4%, SO32.8~7.0%；
Cationic polyacrylamide (CPAM) 0.2%.
2. a kind of conditioner preparation method according to claim 1 for sludge dewatering, it is characterised in that press following step
It is rapid to carry out:
Step 1, the preparation of microbial flocculant NOC-1:
Select rhodococcus erythropolis as strain, using water-insoluble carbon source and inorganic nitrogen-sourced, 25~32 DEG C, pH 8.5~9.5,
0.3~0.5L/min of blast rate, 100~200r/min of stirring rate are cultivated；The water-insoluble carbon source is olive
Oil, described is inorganic nitrogen-sourced for urea or ammonium sulfate；
Step 2, metal oxide and nonmetal oxide the finished product preparation of chemical floc:
1. by metal oxide and nonmetal oxide respectively in roaster in 1150 DEG C of roasting temperature 2h；
2. substance made from step 1 is cooled to room temperature, the constituent mass determined when by operation is configured to mixture；
3. the mixture that step 2 is made is milled to fine powder, and specific surface area >=400m2/kg；
4. metal oxide made from mix step 3 and nonmetal oxide fine powder, uniformly rear to obtain the gold of chemical floc
Belong to oxide and nonmetal oxide finished product；
Step 3, the cationic polyacrylamide preparation of chemical floc:
The constituent mass proportion determined when by operation weighs cationic polyacrylamide (CPAM), presses water: CPAM when dissolving CPAM
The ratio dissolution of=1000:2 is spare.
3. a kind of conditioner purposes according to claim 1 for sludge dewatering, it is characterised in that: in use, first existing
The mud that the microbial flocculant NOC-1 pretreatment of 10mg needs to be dehydrated is added in every liter of mud；Chemical floc is reused, is made
When with chemical floc, 2~5kg chemical floc, charging sequence are as follows: first add chemical floc are added in every 100kg mud
Metal oxide and nonmetal oxide finished product, then addition polymerization acrylamide (CPAM), time interval is 1~2 minute；To mix
Plate and frame filter press filter-press dehydration is used after uniformly again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811377942.6A CN109293217A (en) | 2018-11-19 | 2018-11-19 | A kind of conditioner and its preparation method and application for sludge dewatering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811377942.6A CN109293217A (en) | 2018-11-19 | 2018-11-19 | A kind of conditioner and its preparation method and application for sludge dewatering |
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| CN109293217A true CN109293217A (en) | 2019-02-01 |
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| CN201811377942.6A Pending CN109293217A (en) | 2018-11-19 | 2018-11-19 | A kind of conditioner and its preparation method and application for sludge dewatering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112280804A (en) * | 2020-09-30 | 2021-01-29 | 神美科技有限公司 | Preparation method and application of microbial flocculant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03123699A (en) * | 1989-10-06 | 1991-05-27 | Ebara Infilco Co Ltd | Treatment of sludge |
| CN1962497A (en) * | 2006-11-27 | 2007-05-16 | 武汉路德科技有限责任公司 | Sludge drying agent and its preparing method |
| CN103435250A (en) * | 2013-07-11 | 2013-12-11 | 北京师范大学 | Method for improving dewaterability of activated sludge through addition of microbial flocculant |
| CN105859065A (en) * | 2016-04-14 | 2016-08-17 | 武汉美丽东方环保有限公司 | Silt solidification conditioning agent and preparation method and application thereof |
-
2018
- 2018-11-19 CN CN201811377942.6A patent/CN109293217A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03123699A (en) * | 1989-10-06 | 1991-05-27 | Ebara Infilco Co Ltd | Treatment of sludge |
| CN1962497A (en) * | 2006-11-27 | 2007-05-16 | 武汉路德科技有限责任公司 | Sludge drying agent and its preparing method |
| CN103435250A (en) * | 2013-07-11 | 2013-12-11 | 北京师范大学 | Method for improving dewaterability of activated sludge through addition of microbial flocculant |
| CN105859065A (en) * | 2016-04-14 | 2016-08-17 | 武汉美丽东方环保有限公司 | Silt solidification conditioning agent and preparation method and application thereof |
Non-Patent Citations (3)
| Title |
|---|
| 张天胜: "《表面活性剂应用技术》", 30 September 2001, 化学工业出版社 * |
| 易绍金等: "《石油与微生物技术》", 31 July 2002, 中国地质大学出版社 * |
| 陈昆柏等: "《污泥处理与处置》", 31 July 2017, 河南科学技术出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112280804A (en) * | 2020-09-30 | 2021-01-29 | 神美科技有限公司 | Preparation method and application of microbial flocculant |
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Application publication date: 20190201 |
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