CN104724897A - Sludge dewatering conditioning agent and use method thereof - Google Patents
Sludge dewatering conditioning agent and use method thereof Download PDFInfo
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- CN104724897A CN104724897A CN201510132045.9A CN201510132045A CN104724897A CN 104724897 A CN104724897 A CN 104724897A CN 201510132045 A CN201510132045 A CN 201510132045A CN 104724897 A CN104724897 A CN 104724897A
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- sludge
- sludge dehydration
- dehydration conditioner
- mud
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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
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/126—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using drum filters
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
Abstract
The invention provides a sludge dewatering conditioning agent and a use method thereof. The conditioning agent consists of a coagulating agent, a coagulant aid, an oxidant, an ion exchanger and a surfactant. When used, the sludge dewatering conditioning agent is added into sludge according to a certain proportion in a certain manner, can form a grid structure with an effect of adsorbing bridges, and also has relatively strong ion exchange and surface activation wall-breaking capacities, and the mutual synergistic action can greatly improve the sludge dewatering performance. The sludge dewatering conditioning agent has the advantages of simple process flow, high dewatering rate, strong applicability, capability of batch processing and the like.
Description
Technical field
The present invention relates to Sewage Sludge Treatment Techniques field, specifically a kind of sludge dehydration conditioner and using method thereof.
Background technology
Along with city and industrial fast development, the quantity discharged of city domestic sewage, industrial sewage etc. increases day by day, thus the amount of the by product mud produced in sewage disposal is increased day by day, how processing these mud also becomes unavoidable problem in social development.Current, landfill, compost and burning three kinds of modes are mainly to the method for sludge treatment, feature that mud has " four is high ": is that water ratio is high; Two is that organic content is high, is easy to rotten stench; Three is that heavy metal content is higher; Four is that germ content is high, containing a large amount of bacteriums, parasite, virus.Mud, without harmless treatment, is thrown aside arbitrarily, simple landfill, easy polluted air, soil and water source, serious threat HUMAN HEALTH and environmental safety.
Effectively carrying out for ease of subsequent disposal, conditioning and the dehydration of mud are absolutely necessary.The factor affecting dewatering performance of sludge mainly contains size and distribution, surface charge, hydration levels and the intergranular interaction of mud granule.Wherein, the size of mud granule affects the most important factor of dewatering performance of sludge, because mud granule is less, the specific surface area of particle is larger, this means higher hydration levels and needs more medicament to the larger resistance filtered and change dewatering performance of sludge.Conventional sludge conditioner has chemical amendment and controlling algae, adopting in current sludge dehydration process and often adding flocculation agent is exactly a kind of amendment, by flocculation agent mud colloid microparticle surfaces react with, in and the electric charge of mud colloid particulate, promote that mud particle coagulation becomes large particle flco, make water separate from mud granule simultaneously, improve the dewatering of mud.Flocculation agent conventional at present comprises inorganic flocculating agent as aluminium salt and molysite, organic floculant PAM and the microbial flocculant etc. for biological sewage.Sludge dehydration conditioner is mainly divided into inorganic, organic and composite conditioner, and wherein composite conditioner is mainstream development direction.
CN101955312B discloses a kind of sludge conditioner and using method thereof, this amendment adopts and adds biological enzyme and for the improvement of biochemical sludge, utilize extracellular polymeric (the Extracellular polymeric substance in acid and enzyme destruction mud, EPS), improve dehydrating effect, mud mass dryness fraction can be made to bring up to 40% ~ 50% from 20%-30%; But this amendment needs Mierocrystalline cellulose and hemicellulase, conditioning time is also up to 240 minutes, and cost is higher, and organic content is high, can not avoid the problem of the easy compression set of filter cake.
CN 101633549A discloses a kind of sludge conditioner and mud dewatering method thereof, and this amendment is standby by the ash after biomass fuel combustion, unslaked lime and coal ash for manufacturing, and sludge cake water content can be made to be down to 40% ~ 60%; Its shortcoming is that the input amount of inorganic conditioner is too high, causes mud increase-volume more, and in addition, this amendment is difficult to effectively destroy EPS.
CN 101591132A discloses a kind of method for dehydrating municipal sludge, adopts 60 DEG C ~ 80 DEG C low temperature pyrogenations and nature or forced air drying, makes municipal sludge water ratio drop to less than 10%; The method is with hot heat exchange, must rely on thermal source and heat or UTILIZATION OF VESIDUAL HEAT IN, there will be serious thermal equilibrium negative effect, uneconomical.
CN 101967035A discloses a kind of dewatering conditioner of municipal sludge, and amendment adopts anionic PAM and chitosan to prepare, and effectively reduces anionic PAM consumption, improves dewatering performance of sludge; Its shortcoming is amendment is organic composition, high expensive, difficult degradation and have bio-toxicity, in addition, does not have inorganic conditioner to be difficult to form strong mesh skeleton structure, thoroughly can not solve organic easily compression set problem.
In the paper that sludge dehydration conditioner is studied, mechanism, the combination of various amendment and selecting of follow-up dehydration equipment are nursed one's health to the occurrence form of water in mud, mud granule surface property and mud unity structure, sludge dewatering, put into practice from theoretical and test and all carried out some elaborations, certain requirement is proposed to sludge dehydration conditioner and application thereof.
In sum, development or exploitation one effectively can improve dewatering performance of sludge, with low cost, preparation technology's advantages of simple and the sludge dehydration conditioner of environmental protection very has realistic meaning.
Summary of the invention
The present invention is devoted to solve in above-mentioned prior art and has problems, and works in coordination with the extracellular polymeric destroyed by mud granule surface reduce water holdup by coagulating agent and oxygenant; Mud granule surface charge ion formation is changed by the synergy of ion-exchanger and tensio-active agent, surface adsorption water is made to be converted into crystalline texture water, and then reduction water holdup, by the pH value of coagulant aids conditioning of mud, change the grain pattern of mud, destroy the stability of mud colloid, form hard grid structure simultaneously, mud ultimate compression strength is good, is convenient to mechanical dehydration; Adopt sludge dehydration conditioner of the present invention effectively can reduce odor concentration, the germ reduced in mud, parasitic ovum and the effect such as virus activity and steady component heavy metal ion; Adopt amendment of the present invention to carry out sludge dewatering to have that technical process is simple, dehydration rate is high, can batch processing, the advantages such as suitability is strong.
The invention provides a kind of sludge dehydration conditioner and using method thereof, described sludge dehydration conditioner comprises coagulating agent, coagulant aids, oxygenant, ion-exchanger and tensio-active agent, and the percent mass of each material composition is composed as follows:
Asbestos tailings 0-20%, carbide slag 0-40%, serpentine 0-15%, rhombspar 0-15%, kaolin 0-15%, diatomite 0-15%, wilkinite 0-12%, clay 0-10%, humate 0-10%, molysite and/or aluminium salt 0-10%, pyrolusite 0-8%, hypochlorite 0-5%, tensio-active agent 0-3%.
Above-mentioned sludge dehydration conditioner can according to the type of mud, moisture percentage in sewage sludge and occurrence form, and the factors such as mud potential of hydrogen and organic content are mated, and even suitably can be adjusted for different dewatering technology of mud.
Preferably, asbestos tailings 0-15%, carbide slag 5-35%, serpentine 0-12%, rhombspar 0-10%, kaolin 0-12%, diatomite 0-10%, wilkinite 0-10%, clay 0-8%, humate 0-8%, molysite and/or aluminium salt 2-8%, pyrolusite 0-5%, hypochlorite 0-3.5%, tensio-active agent 0.5-2.5%.
Molysite in mentioned component refers to iron(ic) chloride, ferric sulfate, one or more in green vitriol and chlorination ferrovanadium; Aluminium salt refers to aluminum chloride, Tai-Ace S 150, alum, one or more in polymerize aluminum chloride and polyaluminium sulfate.
Hypochlorite in mentioned component refers to Losantin and/or clorox.
Humate in mentioned component refers to Sodium salts humic acids and/or potassium humate.
Tensio-active agent in mentioned component refers to sodium alkyl benzene sulfonate, alkylol amide, one or more in polysorbate and cetyl pyridinium bromide etc.
The invention provides a kind of sludge dehydration conditioner and using method thereof, comprise add material, stir mixing, leave standstill, the key step such as dehydration:
A. successively add in mud by coagulating agent and oxygenant, rapid stirring 3 ~ 5min, makes its full and uniform mixing;
B. successively join in system described in a step by tensio-active agent and ion-exchanger, rapid stirring 3 ~ 5min, makes its full and uniform mixing;
C. coagulant aids is joined in system described in b step, low rate mixing 5 ~ 10min, make its full and uniform mixing;
D. step c gained material is left standstill 1 ~ 2h;
E. mechanical dehydration is carried out to d. step gained material.
In the mud of water ratio higher than 92% per ton add 1 ~ 3% sludge dehydration conditioner of the present invention, namely mud per ton adds 10-30Kg amendment.Through the synergy of each component, after mechanical dehydration, in mud, water ratio can be down to 40 ~ 60%, and the mud after dehydration has hydrophobicity, good permeability, and can continue evaporation drying in its natural state, dewatered sludge can be used for production of construction materials.
Accompanying drawing explanation
Fig. 1 is sludge dehydration conditioner using method schematic diagram
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but these embodiments do not form any limitation of the invention.
Embodiment 1:
1) thickened sludge that municipal sewage plant's water ratio is 98.6% is got, add the amendment of following percent mass composition: asbestos tailings 13%, carbide slag 30%, serpentine 8%, rhombspar 9%, kaolin 5%, diatomite 5%, wilkinite 5%, clay 5%, Sodium salts humic acids 5%, iron trichloride 4%, aluminum chloride 3%, pyrolusite 4%, clorox 2.5%, Sodium dodecylbenzene sulfonate 1.0%, polysorbate 0.5%, amendment dosage is 1.2% of sludge quantity;
2) using method: first iron trichloride and aluminum chloride are added in mud, rapid stirring about 1min, then add pyrolusite and clorox, continue rapid stirring 3min; Next adds Sodium salts humic acids, Sodium dodecylbenzene sulfonate and polysorbate, adds wilkinite and clay after continuing rapid stirring about 1min, continues rapid stirring 2min; Again, add asbestos tailings, carbide slag, serpentine, rhombspar, kaolin and diatomite, continue low rate mixing 8min; Finally, plate-and-frame filter press dehydration 5min is adopted after leaving standstill 1h.
3) carry out moisture determination to the mud after dehydration, water ratio is 57.2%.
Embodiment 2:
1) getting coke-oven plant's ammonia nitrogen waste water water ratio is the thickened sludge of 97.5%, add the amendment of following percent mass composition: asbestos tailings 10%, carbide slag 35%, serpentine 6%, rhombspar 9%, kaolin 3%, diatomite 7%, wilkinite 6%, clay 4%, potassium humate 5%, polyaluminium sulfate 5%, pyrolusite 5%, potassium hypochlorite 3%, cetyl pyridinium bromide 1%, alkylol amide 1%, amendment dosage is 2.1% of sludge quantity;
2) using method: first add in mud by molysite and/or aluminium salt, rapid stirring about 1.5min, then add pyrolusite and potassium hypochlorite, continues rapid stirring 3.5min; Next adds potassium humate, cetyl pyridinium bromide and alkylol amide, adds wilkinite and clay after continuing rapid stirring about 1.5min, continues rapid stirring 2.5min; Again, add asbestos tailings, carbide slag, serpentine, rhombspar, kaolin and diatomite, continue low rate mixing 8min; Finally, plate-and-frame filter press dehydration 5min is adopted after leaving standstill 1.5h.
3) carry out moisture determination to the mud after dehydration, water ratio is 51.9%.
Embodiment 3:
1) getting textile mills' organic waste water water ratio is the thickened sludge of 93.8%, add the amendment of following percent mass composition: asbestos tailings 7%, carbide slag 33%, serpentine 8%, rhombspar 7%, kaolin 9%, diatomite 8%, wilkinite 5%, clay 3%, Sodium salts humic acids 3%, ferric sulfate 5%, polyaluminium sulfate 2%, pyrolusite 4%, clorox 3.5%, Sodium dodecylbenzene sulfonate 1%, alkylol amide 1.5%, amendment dosage is 2.5% of sludge quantity;
2) using method: first ferric sulfate and polyaluminium sulfate add in mud, rapid stirring about 2min, then add pyrolusite and clorox, continue rapid stirring 3min; Next adds Sodium salts humic acids, Sodium dodecylbenzene sulfonate and alkylol amide, adds wilkinite and clay after continuing rapid stirring about 1.5min, continues rapid stirring 3min; Again, add asbestos tailings, carbide slag, serpentine, rhombspar, kaolin and diatomite, continue low rate mixing 10min; Finally, plate-and-frame filter press dehydration 10min is adopted after leaving standstill 1.2h.
3) carry out moisture determination to the mud after dehydration, water ratio is 46.3%.
Although show and described several embodiment of the present invention, the present invention has not been restricted to described embodiment.On the contrary; those skilled in the art should recognize when not departing from principle of the present invention and spirit; can carry out any accommodation and improvement to these embodiments, protection scope of the present invention determined by appended claim and equivalent thereof.
Claims (9)
1. a sludge dehydration conditioner, it is characterized in that: described sludge dehydration conditioner comprises coagulating agent, coagulant aids, oxygenant, ion-exchanger and tensio-active agent, percent mass consists of: asbestos tailings 0-20%, carbide slag 0-40%, serpentine 0-15%, rhombspar 0-15%, kaolin 0-15%, diatomite 0-15%, wilkinite 0-12%, clay 0-10%, humate 0-10%, molysite and/or aluminium salt 0-10%, pyrolusite 0-8%, hypochlorite 0-5%, tensio-active agent 0-3%.
2. sludge dehydration conditioner according to claim 1, it is characterized in that: described sludge dehydration conditioner percent mass consists of: asbestos tailings 0-15%, carbide slag 5-35%, serpentine 0-12%, rhombspar 0-10%, kaolin 0-12%, diatomite 0-10%, wilkinite 0-10%, clay 0-8%, humate 0-8%, molysite and/or aluminium salt 2-8%, pyrolusite 0-5%, hypochlorite 0-3.5%, tensio-active agent 0.5-2.5%.
3. sludge dehydration conditioner according to claim 1, is characterized in that: it is dissimilar that described sludge dehydration conditioner is applicable to municipal sludge and industrial sludge etc.
4. sludge dehydration conditioner according to claim 1, is characterized in that: described sludge dehydration conditioner is applicable to the dehydration that moisture mass percent is the mud of more than 92%.
5. sludge dehydration conditioner according to claim 1 and 2, described coagulating agent refers to molysite and/or aluminium salt; Described coagulant aids refers to asbestos tailings, carbide slag, serpentine, rhombspar, kaolin and diatomaceous one or more; Described oxygenant is pyrolusite and/or hypochlorite; Described ion-exchanger refers to wilkinite and/or clay; Described tensio-active agent refers to one or more of humate and/or other tensio-active agent.
6. the using method of a sludge dehydration conditioner as claimed in claim 1, it is characterized in that: described sludge dehydration conditioner component material joins in water-containing sludge with mode by a certain percentage, be uniformly mixed, leave standstill, recycling mechanical filter equipment dewaters.
7. the using method of sludge dehydration conditioner according to claim 6, is characterized in that: it is dissimilar that described sludge dehydration conditioner is applicable to municipal sludge and industrial sludge etc.
8. the using method of sludge dehydration conditioner according to claim 6, is characterized in that: described sludge dehydration conditioner is applicable to the dehydration that moisture mass percent is the mud of more than 92%.
9. the using method of sludge dehydration conditioner according to claim 6, is characterized in that: described mechanical filter equipment can be plate-and-frame filter press, drum type vacuum filter, belt filter press, rotational tubby centrifuge one or more.
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| CN201510132045.9A CN104724897A (en) | 2015-03-25 | 2015-03-25 | Sludge dewatering conditioning agent and use method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148833A (en) * | 2015-10-16 | 2015-12-16 | 中国矿业大学(北京) | Modified compound kieselguhr adsorbing agent for treating industrial wastewater and preparation method |
| CN105505810A (en) * | 2015-09-16 | 2016-04-20 | 广州金水动物保健品有限公司 | Microbe composition and use thereof |
| WO2018120342A1 (en) * | 2016-12-29 | 2018-07-05 | 华中科技大学 | Dosage optimization method of chemical conditioner for deeply dewatering sludge |
| CN109020109A (en) * | 2018-07-17 | 2018-12-18 | 陕西科技大学 | A kind of regulation method of biochemical sludge particle apparent property parameter |
| CN110092570A (en) * | 2019-05-14 | 2019-08-06 | 吉林建筑大学 | A kind of sludge concentration and dewatering agent and preparation method thereof |
| CN110526550A (en) * | 2019-08-21 | 2019-12-03 | 北京首创污泥处置技术有限公司 | A kind of deep dehydration medicament for solid phase sludge |
| CN113666609A (en) * | 2021-09-01 | 2021-11-19 | 内蒙古嗨泥环保科技有限公司 | Sludge dewatering treatment system and sludge treatment method |
| CN117510033A (en) * | 2024-01-08 | 2024-02-06 | 松谷科技(福建)有限公司 | Municipal sludge deep dehydration drying process and equipment |
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| CN101327976A (en) * | 2008-07-15 | 2008-12-24 | 南通立源水处理技术有限公司 | Efficient water treatment flocculant |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105505810A (en) * | 2015-09-16 | 2016-04-20 | 广州金水动物保健品有限公司 | Microbe composition and use thereof |
| CN105148833A (en) * | 2015-10-16 | 2015-12-16 | 中国矿业大学(北京) | Modified compound kieselguhr adsorbing agent for treating industrial wastewater and preparation method |
| WO2018120342A1 (en) * | 2016-12-29 | 2018-07-05 | 华中科技大学 | Dosage optimization method of chemical conditioner for deeply dewatering sludge |
| CN109020109A (en) * | 2018-07-17 | 2018-12-18 | 陕西科技大学 | A kind of regulation method of biochemical sludge particle apparent property parameter |
| CN110092570A (en) * | 2019-05-14 | 2019-08-06 | 吉林建筑大学 | A kind of sludge concentration and dewatering agent and preparation method thereof |
| CN110526550A (en) * | 2019-08-21 | 2019-12-03 | 北京首创污泥处置技术有限公司 | A kind of deep dehydration medicament for solid phase sludge |
| CN113666609A (en) * | 2021-09-01 | 2021-11-19 | 内蒙古嗨泥环保科技有限公司 | Sludge dewatering treatment system and sludge treatment method |
| CN113666609B (en) * | 2021-09-01 | 2022-06-10 | 内蒙古嗨泥环保科技有限公司 | Sludge dewatering treatment system and sludge treatment method |
| CN117510033A (en) * | 2024-01-08 | 2024-02-06 | 松谷科技(福建)有限公司 | Municipal sludge deep dehydration drying process and equipment |
| CN117510033B (en) * | 2024-01-08 | 2024-04-12 | 松谷科技(福建)有限公司 | Municipal sludge deep dehydration drying process and equipment |
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