CN101823827A - Method for conditioning municipal rest sludge with industrial epoxy resin wastewater - Google Patents
Method for conditioning municipal rest sludge with industrial epoxy resin wastewater Download PDFInfo
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- CN101823827A CN101823827A CN 201010152350 CN201010152350A CN101823827A CN 101823827 A CN101823827 A CN 101823827A CN 201010152350 CN201010152350 CN 201010152350 CN 201010152350 A CN201010152350 A CN 201010152350A CN 101823827 A CN101823827 A CN 101823827A
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Abstract
The invention relates to a method for conditioning municipal rest sludge with industrial epoxy resin wastewater, which belongs to the technical field of environment engineering. The essentials of the method are as follows: a certain amount of industrial epoxy resin wastewater is added into sludge with 99 percent of water content; the volume ratio of the sludge to the high-salinity industrial epoxy resin wastewater which serves as the conditioner is 1:1 to 1:2, so that the water content of the sludge is reduced when the sludge is changed from a free water form to a sludge floc form so as to meet the pre-treatment requirement before sludge treatment, i.e. meet and satisfy the requirement on the 80 percent of pre-treatment water content of municipal sludge, and then carry out landfill, burning or other agricultural treatment. The method for conditioning municipal rest sludge with industrial epoxy resin wastewater has the advantages of simple process and convenient and feasible operation.
Description
Technical field
The present invention relates to the industrial epoxy resin waste-water of a kind of usefulness and nurse one's health the method for municipal excess sludge, belong to field of environment engineering technology.
Background technology
The municipal sewage plant produces a large amount of mud in the process of disposing of sewage, because the water ratio of mud is very high, will take too big space as not handling, and the transportation cost of mud can improve greatly.Therefore, the sludge dewatering treatment of Sewage Plant is most important.Usually, these organic mud all are made up of the electronegative colloidal solid of wetting ability, granular size is very inhomogeneous and very tiny, contractibility is big, and specific filtration resistance impedance value is also big, thereby the filter dehydration poor-performing, needing to add sludge dehydrating agent before the mechanical sludge dewatering nurses one's health it, to improve its filter dehydration performance, reduce cost of water treatment, improve purifying water effect.
The chemical conditioning of mud promptly changes colloid surface electric charge or three-dimensional arrangement in the aaerosol solutions by adding chemical agents such as an amount of flocculation agent, coagulant aids, overcomes interparticle repulsion. and it is collided mutually with external force such as stirring. mud granule flocculates agglomerating and precipitates. reach the effect of stabilization removal.The increase of volume simultaneously makes the long-pending significantly reduction of colloid surface, and surperficial with inner moisture distribution also changes, and has reduced the absorption of moisture, thereby has improved dewatering performance of sludge.
At present, aspect the processed of mud, domestic generally employing adds PAM (polyacrylamide) flocculation agent and handles mud, makes its water ratio be reduced to about 80% and handles, its processing costs is relatively more expensive, is very necessary so seek existing amendment and improve treatment process.The waste water of high salinity is very common in industry, wherein contains a large amount of inorganic ions even also comprises organism, because salinity is too high, the present stage processing of this waste water remains a difficult problem.If utilize the high salt concentration ion in the trade effluent to nurse one's health municipal sludge, the water ratio after then municipal sludge is handled can be reduced to about 76%.This applicable industry waste water comes sludge treatment method and technology that the sludge disposal of China present stage is handled very big meaning.
Summary of the invention
The objective of the invention is to according to conditioning mechanism and the effect of inorganic ion, by municipal excess sludge being handled, to reach the reduction moisture percentage in sewage sludge with the industrial epoxy resin waste-water that contains the high density inorganic ion to mud.Another object of the present invention provides a kind of method of handling municipal excess sludge of regulating.
The industrial epoxy resin waste-water of a kind of usefulness of the present invention is nursed one's health the method for municipal excess sludge, it is characterized in that having following process and step:
Be 7.0 ± 0.2 in the pH value, water ratio is to add industrial epoxy resin waste-water in 99% the municipal excess sludge to nurse one's health, and makes sludge dewatering; As its salinity value of industrial epoxy resin waste-water of amendment greater than 100 ‰; The volume ratio of mud and industrial epoxy resin waste-water is 1: 1～1: 2; After rotating speed is to stir 10 minutes under the 300rpm, standing sedimentation for some time, remove supernatant liquor, then remaining mud flco is placed whizzer, at rotating speed is under the 4000rpm condition centrifugal 10 minutes, its water ratio of mud after treatment can be reduced to about 76%, reaches and meet the requirement of municipal sludge pre-treatment standard about 80%, can directly carry out landfill, burning or other approach such as agricultural are handled.
The mechanism of the inventive method is as described below: owing to contain a large amount of inorganic ions in the industrial epoxy resin waste-water, its salinity value can reach 140 ‰; Before neutralizing to the negative charge on mud flco surface, inorganic ion in the epoxy resin waste-water changed flco surface and spatial structure; Under the inorganic ion effect, processes such as flocculation and free water release have taken place in the mud flco, show as a large amount of declines of water ratio and the metamorphosis of mud flco.Mud can be reduced to water ratio about 76% after treatment, thereby direct landfill or carry out other processing.
The advantage of the inventive method is:
1. the inventive method can have been saved the requirement of in the past adding the flocculation agent polyacrylamide, has saved industrial chemicals.
2. owing to adopted the high industrial epoxy resin waste-water of salinity value, promptly adopt the inorganic ion amendment, so avoided secondary pollution.
3. the inventive method technology is simple, and is easy to operate feasible.
Description of drawings
Fig. 1 is epoxy resin waste-water dosage and its water ratio change curve in the mud among the present invention.
Fig. 2 is settling time correlation curve figure when adding epoxy resin waste-water and other substance in the mud among the present invention.
Embodiment
After now specific embodiments of the invention being described in.
Embodiment: the excess sludge of getting municipal wastewater factory is as subjects, and its initial aqueous rate is 99.5%, and its standing sedimentation is removed supernatant liquor after for some time, and this moment, water ratio was 98%.Get this mud of 500ml and be positioned in the beaker of 2000ml, add industrial epoxy resin waste-water 1000ml again, stirred 15 minutes, standing sedimentation is removed supernatant liquor after 15 minutes again; And then remaining mud flco water was put in the centrifuge tube under the 4000rpm rotating speed centrifugation 10 minutes, remove supernatant liquor again, its water ratio mean value of the mud flco that stays at last is 76.3%, substantially reach water ratio before the sludge treatment and reduce to 80% municipal processing requirements, directly landfill or carry out other processing.
Relevant amendment industry epoxy resin waste-water is to the test of mud performance impact
1. the epoxy resin waste-water dosage is to the influence of moisture percentage in sewage sludge: referring to Fig. 1, as shown in Figure 1, the water ratio of mud is along with the increase of Resins, epoxy section dosage, can be from dropping to 76% without 88.6% of the primary sludge of conditioning.
2. the contrast of settling time when adding epoxy resin waste-water with other substance in the mud: test conditions is: add different amendment 250ml in 250ml mud, volume is 500ml altogether; The material that adds is respectively epoxy resin waste-water, polyacrylamide, flying dust water lotion and with the primary sludge water of amendment.It is shaken up its free setting of relief, because the settling velocity difference of each mud, the time when mud reaches certain certain settling volume is also different; Sedimentation is the fastest, and to can be considered conditioning effect best.Referring to Fig. 2, by the test fishing line among Fig. 2 as can be known, the effect of settling of amendment industry epoxy resin waste-water is best.
Claims (1)
1. nurse one's health the method for municipal excess sludge with industrial epoxy resin waste-water for one kind, it is characterized in that having following process and step:
Be 7.0 ± 0.2 in the pH value, water ratio is to add industrial epoxy resin waste-water in 99% the municipal excess sludge to nurse one's health, and makes sludge dewatering; As its salinity value of industrial epoxy resin waste-water of amendment greater than 100 ‰; The volume ratio of mud and industrial epoxy resin waste-water is 1: 1～1: 2; After rotating speed is to stir 10 minutes under the 300rpm, standing sedimentation for some time, remove supernatant liquor, then remaining mud flco is placed whizzer, at rotating speed is under the 4000rpm condition centrifugal 10 minutes, its water ratio of mud after treatment can be reduced to about 76%, reaches and meet the requirement of municipal sludge pre-treatment standard about 80%, can directly carry out landfill, burning, other approach such as agricultural are handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010152350 CN101823827A (en) | 2010-04-20 | 2010-04-20 | Method for conditioning municipal rest sludge with industrial epoxy resin wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010152350 CN101823827A (en) | 2010-04-20 | 2010-04-20 | Method for conditioning municipal rest sludge with industrial epoxy resin wastewater |
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| CN101823827A true CN101823827A (en) | 2010-09-08 |
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| CN 201010152350 Pending CN101823827A (en) | 2010-04-20 | 2010-04-20 | Method for conditioning municipal rest sludge with industrial epoxy resin wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110373243A (en) * | 2018-04-13 | 2019-10-25 | 淮安市水泥厂有限公司 | Using the processing method that industrial residue epoxy resin powder substitution is coal-fired |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265011A (en) * | 2008-04-24 | 2008-09-17 | 李肇忠 | Application of discarded alkali slag/alkali liquid in activated sludge dehydration |
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2010
- 2010-04-20 CN CN 201010152350 patent/CN101823827A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265011A (en) * | 2008-04-24 | 2008-09-17 | 李肇忠 | Application of discarded alkali slag/alkali liquid in activated sludge dehydration |
Non-Patent Citations (2)
| Title |
|---|
| 《广东化工》 20081125 唐玉萍 环氧树脂生产废水特点及其处理方法 第76页右栏第2.4.3节，第77页第3.1.2节 1 , 第11期 2 * |
| 《环境工程》 20031022 王淑莹等 无机盐对活性污泥沉降性的影响 图1，第9页左栏第2段，第4节结论 1 , 第05期 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110373243A (en) * | 2018-04-13 | 2019-10-25 | 淮安市水泥厂有限公司 | Using the processing method that industrial residue epoxy resin powder substitution is coal-fired |
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Open date: 20100908 |