CN103359815A - Novel high-efficiency environment-friendly coagulating agent used for treating turbid water or polluted water - Google Patents
Novel high-efficiency environment-friendly coagulating agent used for treating turbid water or polluted water Download PDFInfo
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- CN103359815A CN103359815A CN2013103014092A CN201310301409A CN103359815A CN 103359815 A CN103359815 A CN 103359815A CN 2013103014092 A CN2013103014092 A CN 2013103014092A CN 201310301409 A CN201310301409 A CN 201310301409A CN 103359815 A CN103359815 A CN 103359815A
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Abstract
The invention discloses a novel high-efficiency environment-friendly coagulating agent used for treating turbid water or polluted water. The coagulating agent comprises the components of, by weight: 10-30% of bauxite, 20-40% of fly ash, 20-60% of lime, 3-8% of zeolite, 1-5% of citric acid, and 1-5% of cement. The invention also relates to the application of the high-efficiency environment-friendly coagulating agent in treating turbid water or polluted water. The coagulating agent provided by the invention is economical and environment-friendly, and has the advantages of rich component source and low cost. An agent dose is low, wherein the dose is 3-5% of the dry weight of sludge in the turbid water or polluted water. The influence on water body pH value is low, such that the original property of the sludge in the water is not changed. Part of active heavy metal is solidified, such that activity of sludge in water can be increased, and water body self-cleaning capacity can be greatly improved. Multiple functions such as absorption, condensation, chelation, curing, ion exchange, and the like are integrated. A treatment effect is good. Water body after flocculation and sedimentation is clear and transparent, and has no odor.
Description
Technical field
The present invention relates to a kind of flocculation agent, is a kind of novel high-efficiency environment friendly flocculation agent and application thereof be used to administering dirty water or polluted water specifically.
Background technology
Along with the fast development of economy and the quickening of urbanization process, China's water pollution problems is day by day serious.A large amount of dischargings of trade effluent and sanitary sewage have become the pollution problem that the many cities of China are faced jointly, have had a strong impact on resident living, city image and ecotope.Mainly can be divided into physics, chemistry and biological-ecological three class methods for the technology of administering dirty water or polluted water both at home and abroad at present.Physical method mainly comprises filtration, precipitation, artificial aeration etc.; Chemical process mainly comprises enhanced flocculation, chemical oxidation and chemical precipitation etc.; Biological method mainly comprises microbial augmentation technology, technology of biological membrane, plant purification technology and biological-ecological purification techniques etc.
The advantages such as that physical method and chemical process have is simple to operate, instant effect generally help out in dirty water or polluted water are administered.Biological method can fundamentally recover the ecological functions of dirty water or polluted water, it is the very fast a kind of technology of domestic and international development in recent years, the Metabolic activity of the microorganism of the plant that its utilization is cultivated or cultivation, inoculation, pollutent in dirty water or the polluted water is shifted, transforms and degrades, improve water quality, make up simultaneously the aquatic ecosystem with complete trophic level structure, fundamentally recover the health of water body system.Biological method is applied to the improvement of dirty water or polluted water, have stable effectively, secure persistent, construction costs is lower, running cost is cheap, can improve the characteristics such as combine with greening environment and view, but biological method is processed and is taken effect slowly, and be subject to the impact of season and weather condition, effective follow-up management of simultaneity factor safeguards it also is the major issue of being badly in need of solution in the biological method application process.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides high-efficiency environment friendly flocculation agent and application thereof a kind of cheapness, that can improve treatment effect.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of high-efficiency environment friendly flocculation agent comprises the component of following weight percent: bauxitic clay 10 ~ 30%, flyash 20 ~ 40%, unslaked lime 20 ~ 60%, zeolite 3 ~ 8%, citric acid 1 ~ 5%, cement 1 ~ 5%.
The application of above-mentioned high-efficiency environment friendly flocculation agent in administering dirty water or polluted water.
The addition of described flocculation agent be in dirty water or the polluted water mud dry weight 3～5%.
The principle of flocculation agent of the present invention in improvement is as follows: the bauxitic clay in the flocculation agent, flyash can react rapidly with the calcium hydroxide of life behind the lime hydration, polymerization generates hydroxy polymer colloid, precipitation of hydroxide, thereby make a large amount of free water change water of constitution into, the gel so that add the dirty water of flocculation agent or the rapid multiviscosisty of mud in the polluted water.Lime is as coagulant aids, and except regulating the pH value, the calcium ion after its dissolving can be formed porous web trellis hole frame by the absorption of the soil ulmin in the mud in mud, thereby improves the compressibility of mud, increases floc strength.In addition, calcium oxide and citric acid also have the effect of passive metal, can make the heavy metal of ionic condition generate oxyhydroxide or inner complex precipitation in alkaline environment, thereby reduce the activity of heavy metal ion, improve the self-purification capacity of water body; Natural zeolite has absorption stink and ion exchange, and cement has the effect of solidifying throw out and increasing medicament proportion.
Beneficial effect: compared with prior art, the invention has the advantages that: each component source of flocculation agent of the present invention is abundant, cheap, economic environmental protection; Additive amount of medicament is few, and addition is 3～5% of mud dry weight, and is little on the water pH value impact, the former character of mud in the water do not changed; Part activated state heavy metal is cured, and is conducive to the increase of sludge activity in the water, can greatly improve the self-purification capacity of water body; Integrate the several functions such as absorption, cohesion, chelating, curing, ion-exchange, treatment effect is good, and the water body behind the flocculation sediment is as clear as crystal, odorless.
Embodiment
Below in conjunction with embodiment the present invention is further described.
Embodiment 1: a kind of high-efficiency environment friendly flocculation agent comprises the component of following weight percent:
Bauxitic clay 25%, flyash 30%, unslaked lime 35%, zeolite 5%, citric acid 3%, cement 2%; Wherein:
In the bauxitic clay: aluminium sesquioxide content is greater than 80%, and ferric oxide content is greyish white Powdered less than 3%.
Flyash adopts second class powered coal ash, density 3.15kg/m
3, fineness (the 0.045mm square hole sieve tails over)≤20%, water demand ratio≤105%, loss on ignition≤8%, water content≤1%, sulfur trioxide content≤3%.
Unslaked lime is technical grade unslaked lime, and its mass content is more than 90%.
It is Powdered that zeolite is, and silicon-dioxide quality content 〉=60% in the zeolite.
The mass content of citric acid 〉=99%.
Cement is Portland blastfurnaceslag cement, P.S.A32.5.
At first above-mentioned novel high-efficiency environment friendly flocculation agent is allocated and mixed according to the ratio of each component, then process dirty water or polluted water, when dewatered sludge weight is 1kg in dirty water or the polluted water, the pH value of dirty water or polluted water is 6.9 before processing, add deployed novel high-efficiency environment friendly flocculation agent, the addition of flocculation agent is 4% of mud dry weight; Stirred 10 minutes.Then dirty water or polluted water after will stirring leave standstill 1h, and dirty water or polluted water after the coagulative precipitation are as clear as crystal, odorless, and water body pH is 7.0 after processing.
Embodiment 2: substantially the same manner as Example 1, difference is prescription and the addition of flocculation agent, and is specific as follows: bauxitic clay 10%, flyash 40%, unslaked lime 45%, zeolite 3%, citric acid 1%, cement 1%.
The addition of flocculation agent be in dirty water or the polluted water mud dry weight 3%.
The pH value of dirty water or polluted water is 6.9 before flocculation agent is processed, and water body pH is 7.1 after processing.
Embodiment 3: substantially the same manner as Example 1, difference is prescription and the addition of flocculation agent, and is specific as follows: bauxitic clay 30%, flyash 20%, unslaked lime 32%, zeolite 8%, citric acid 5%, cement 5%.
The addition of flocculation agent be in dirty water or the polluted water mud dry weight 5%.
The pH value of dirty water or polluted water is 6.8 before flocculation agent is processed, and water body pH is 7.0 after processing.
Embodiment 4: substantially the same manner as Example 1, difference is prescription and the addition of flocculation agent, and is specific as follows: bauxitic clay 10%, flyash 20%, unslaked lime 60%, zeolite 6%, citric acid 2%, cement 2%.
The addition of flocculation agent be in dirty water or the polluted water mud dry weight 3.5%.
The pH value of dirty water or polluted water is 6.9 before flocculation agent is processed, and water body pH is 7.1 after processing.
The above only is preferred implementation of the present invention; be noted that for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a high-efficiency environment friendly flocculation agent is characterized in that, comprises the component of following weight percent: bauxitic clay 10 ~ 30%, flyash 20 ~ 40%, unslaked lime 20 ~ 60%, zeolite 3 ~ 8%, citric acid 1 ~ 5%, cement 1 ~ 5%.
2. high-efficiency environment friendly flocculation agent according to claim 1 is characterized in that, in the described bauxitic clay: aluminium sesquioxide content is greater than 80%, and ferric oxide content is greyish white Powdered less than 3%.
3. high-efficiency environment friendly flocculation agent according to claim 1 is characterized in that, described flyash adopts second class powered coal ash, density 3.15kg/m
3, fineness (the 0.045mm square hole sieve tails over)≤20%, water demand ratio≤105%, loss on ignition≤8%, water content≤1%, sulfur trioxide content≤3%.
4. high-efficiency environment friendly flocculation agent according to claim 1 is characterized in that, described unslaked lime is technical grade unslaked lime.
5. high-efficiency environment friendly flocculation agent according to claim 1 is characterized in that, described zeolite is Powdered, and silicon-dioxide quality content 〉=60% in the zeolite.
6. high-efficiency environment friendly flocculation agent according to claim 1 is characterized in that, the mass content of described citric acid 〉=99%.
7. high-efficiency environment friendly flocculation agent according to claim 1 is characterized in that, described cement is Portland blastfurnaceslag cement, P.S.A32.5.
8. the application of high-efficiency environment friendly flocculation agent according to claim 1 in administering dirty water or polluted water.
9. application according to claim 8 is characterized in that, the addition of described flocculation agent be in dirty water or the polluted water mud dry weight 3～5%.
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Cited By (7)
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| CN103922449A (en) * | 2014-04-04 | 2014-07-16 | 张爱均 | Efficient environment-friendly flocculant for treatment of black-odor river |
| CN104276670A (en) * | 2014-09-30 | 2015-01-14 | 希望环保（福建）有限公司 | Sewage treating agent containing natural mineral substances and preparation method thereof |
| CN105858788A (en) * | 2016-04-28 | 2016-08-17 | 苏州望意阳环保科技有限公司 | Sewage purifying ball and preparation method thereof |
| CN106186561A (en) * | 2016-08-29 | 2016-12-07 | 浙江恒生印染有限公司 | A kind of low-carbon environment-friendly sewage water treatment method |
| CN107721297A (en) * | 2017-09-22 | 2018-02-23 | 河北煜环环保科技有限公司 | A kind of solidification and stabilization combination agent suitable for heavy metal slag |
| CN110386691A (en) * | 2019-07-24 | 2019-10-29 | 温州众新建设有限公司 | A kind of municipal wastewater processing unit |
| CN110395792A (en) * | 2019-07-24 | 2019-11-01 | 陕西朗正环保科技有限公司 | A kind of cohesion curing agent and preparation method thereof |
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| CN103922449A (en) * | 2014-04-04 | 2014-07-16 | 张爱均 | Efficient environment-friendly flocculant for treatment of black-odor river |
| CN103922449B (en) * | 2014-04-04 | 2015-08-26 | 张爱均 | A kind of high-efficiency environment friendly flocculation agent administered for black smelly river |
| CN104276670A (en) * | 2014-09-30 | 2015-01-14 | 希望环保（福建）有限公司 | Sewage treating agent containing natural mineral substances and preparation method thereof |
| CN104276670B (en) * | 2014-09-30 | 2016-08-24 | 希望环保（福建）有限公司 | A kind of sewage-treating agent containing natural mineral matter and preparation method |
| CN105858788A (en) * | 2016-04-28 | 2016-08-17 | 苏州望意阳环保科技有限公司 | Sewage purifying ball and preparation method thereof |
| CN106186561A (en) * | 2016-08-29 | 2016-12-07 | 浙江恒生印染有限公司 | A kind of low-carbon environment-friendly sewage water treatment method |
| CN107721297A (en) * | 2017-09-22 | 2018-02-23 | 河北煜环环保科技有限公司 | A kind of solidification and stabilization combination agent suitable for heavy metal slag |
| CN107721297B (en) * | 2017-09-22 | 2020-05-12 | 煜环环境科技有限公司 | Solidification stabilization composition agent suitable for heavy metal slag |
| CN110386691A (en) * | 2019-07-24 | 2019-10-29 | 温州众新建设有限公司 | A kind of municipal wastewater processing unit |
| CN110395792A (en) * | 2019-07-24 | 2019-11-01 | 陕西朗正环保科技有限公司 | A kind of cohesion curing agent and preparation method thereof |
| CN110386691B (en) * | 2019-07-24 | 2021-11-23 | 温州众新建设有限公司 | Municipal administration sewage treatment plant |
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Address after: 211100 No. 280 Kaiyuan Road, Jiangning Science Park, Jiangsu, Nanjing Patentee after: Nanjing Wondux Environmental Protection Technology Co., Ltd. Address before: 211100 No. 280 Kaiyuan Road, Jiangning Science Park, Jiangsu, Nanjing Patentee before: Nanjing Wanders Environmental Protection Science & Technology Co., Ltd. |