CN103359815B - 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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- CN103359815B CN103359815B CN201310301409.2A CN201310301409A CN103359815B CN 103359815 B CN103359815 B CN 103359815B CN 201310301409 A CN201310301409 A CN 201310301409A CN 103359815 B CN103359815 B CN 103359815B
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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 flocculation agent for administering dirty water or polluted water and application thereof 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 discharges of trade effluent and sanitary sewage, become the many cities of China common faced by pollution problem, had a strong impact on resident living, city image and ecotope.The domestic and international technology for administering dirty water or polluted water mainly can be divided into physics, chemistry and biological-ecological three class methods 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 microorganism enhanced technology, technology of biological membrane, plant purification technology and biological-ecological purification techniques etc.
Physical method and chemical process have the advantages such as simple to operate, instant effect, generally help out in dirty water or polluted water are administered.Biological method fundamentally can 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, its utilizes the Metabolic activity of microorganism of the plant cultivated or cultivation, inoculation, pollutent in dirty water or polluted water is shifted, transforms and degraded, improve water quality, build the aquatic ecosystem with complete nutrition level structure simultaneously, 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 are lower, running cost is cheap, can improve with greening environment and view features such as combining, but biological method process takes effect slowly, and being subject to the impact of season and weather condition, effective follow-up management of simultaneity factor safeguards it is also the major issue being badly in need of in biological method application process solving.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, that the invention provides a kind of cheapness, that treatment effect can be improved flocculation agent and application thereof.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of 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 in dirty water or polluted water administered by above-mentioned flocculation agent.
The addition of described flocculation agent is 3 ~ 5% of the mud dry weight in dirty water or polluted water.
The principle of flocculation agent of the present invention in improvement is as follows: the bauxitic clay in flocculation agent, flyash can react rapidly with the calcium hydroxide of life after lime hydration, polymerization generates hydroxy polymer colloid, precipitation of hydroxide, thus make a large amount of free water change water of constitution into, make to add the rapid multiviscosisty of mud in the dirty water of flocculation agent or polluted water and gel.Lime is as coagulant aids, and except adjust ph, the calcium ion after its dissolving can be adsorbed by the soil ulmin in mud, forms porous web trellis aperture frame, thus improve the compressibility of mud in 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 in alkaline environment, generate oxyhydroxide or inner complex precipitation, thus reduce the activity of heavy metal ion, improve the self-purification capacity of water body; Natural zeolite has adsorbs malodorous and ion exchange, and cement has solidification throw out and increases the effect of medicament proportion.
Beneficial effect: compared with prior art, the invention has the advantages that: each Component Source of flocculation agent of the present invention enriches, cheap, economic environmental protection; Additive amount of medicament is few, and addition is 3 ~ 5% of mud dry weight, little on water pH value impact, does not change mud originality matter in water; Amount of activated state heavy metal is cured, and is conducive to the increase of sludge activity in water, greatly can improve the self-purification capacity of water body; Integrate the several functions such as absorption, cohesion, chelating, solidification, ion-exchange, treatment effect is good, and the water body after 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 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 bauxitic clay: aluminium sesquioxide content is greater than 80%, and ferric oxide content is less than 3%, in greyish white Powdered.
Flyash adopts second class powered coal ash, density 3.15kg/m
3, fineness (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%.
Zeolite is Powdered, and silicon-dioxide quality content >=60% in zeolite.
Mass content >=99% of citric acid.
Cement is Portland blast furnace slag cement, P.S.A32.5.
First above-mentioned flocculation agent is carried out allocating and mixing according to the ratio of each component, then dirty water or polluted water is processed, when in dirty water or polluted water, dewatered sludge weight is 1kg, before process, the pH value of dirty water or polluted water is 6.9, add deployed flocculation agent, the addition of flocculation agent is 4% of mud dry weight; Stir 10 minutes.Then by stir after dirty water or polluted water leave standstill 1h, the dirty water after coagulative precipitation or polluted water as clear as crystal, odorless, process after water body pH be 7.0.
Embodiment 2: substantially the same manner as Example 1, difference is formula and the addition of flocculation agent, specific as follows: bauxitic clay 10%, flyash 40%, unslaked lime 45%, zeolite 3%, citric acid 1%, cement 1%.
The addition of flocculation agent is 3% of the mud dry weight in dirty water or polluted water.
Before flocculation agent process, the pH value of dirty water or polluted water is 6.9, and after process, water body pH is 7.1.
Embodiment 3: substantially the same manner as Example 1, difference is formula and the addition of flocculation agent, specific as follows: bauxitic clay 30%, flyash 20%, unslaked lime 32%, zeolite 8%, citric acid 5%, cement 5%.
The addition of flocculation agent is 5% of the mud dry weight in dirty water or polluted water.
Before flocculation agent process, the pH value of dirty water or polluted water is 6.8, and after process, water body pH is 7.0.
Embodiment 4: substantially the same manner as Example 1, difference is formula and the addition of flocculation agent, specific as follows: bauxitic clay 10%, flyash 20%, unslaked lime 60%, zeolite 6%, citric acid 2%, cement 2%.
The addition of flocculation agent is 3.5% of the mud dry weight in dirty water or polluted water.
Before flocculation agent process, the pH value of dirty water or polluted water is 6.9, and after process, water body pH is 7.1.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles 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. for administering a flocculation agent for dirty water or polluted water, it is characterized in that, comprising 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. flocculation agent according to claim 1, is characterized in that, in described bauxitic clay: aluminium sesquioxide content is greater than 80%, and ferric oxide content is less than 3%, in greyish white Powdered.
3. the flocculation agent for administering dirty water or polluted water according to claim 1, is characterized in that, described flyash adopts second class powered coal ash, density 3.15kg/m
3, fineness (0.045mm square hole sieve tails over)≤20%, water demand ratio≤105%, loss on ignition≤8%, water content≤1%, sulfur trioxide content≤3%.
4. the flocculation agent for administering dirty water or polluted water according to claim 1, is characterized in that, described unslaked lime is technical grade unslaked lime.
5. the flocculation agent for administering dirty water or polluted water according to claim 1, is characterized in that, described zeolite is Powdered, and silicon-dioxide quality content >=60% in zeolite.
6. the flocculation agent for administering dirty water or polluted water according to claim 1, is characterized in that, mass content >=99% of described citric acid.
7. the flocculation agent for administering dirty water or polluted water according to claim 1, is characterized in that, described cement is Portland blast furnace slag cement, P.S.A32.5.
8. the application in dirty water or polluted water administered by the flocculation agent for administering dirty water or polluted water according to claim 1.
9. application according to claim 8, is characterized in that, the addition of described flocculation agent is 3 ~ 5% of the mud dry weight in dirty water or polluted water.
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| 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 |
| 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 |
| 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 |
| 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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| KR100209302B1 (en) * | 1996-06-01 | 1999-07-15 | 이창성 | Method for treating waste water using fly ash |
| US6207059B1 (en) * | 1998-03-23 | 2001-03-27 | Achemco, Inc. | Process for treating wastewater |
| CN101863601A (en) * | 2009-04-14 | 2010-10-20 | 株式会社安农津技研 | Flocculation curing agent, composition thereof and stabilization improvement method of silt type soil |
| CN102276128B (en) * | 2011-05-23 | 2012-10-03 | 同济大学 | Treatment method of dehydrated sludge in domestic sewage treatment plant |
| CN102267795A (en) * | 2011-06-17 | 2011-12-07 | 中国科学院武汉岩土力学研究所 | Dewatered sludge drying method of wastewater treatment plant |
| CN102951715B (en) * | 2012-11-13 | 2014-05-07 | 山东泰德新能源有限公司 | Treating agent applied to papermaking sewage |
| CN103011549B (en) * | 2013-01-14 | 2013-11-06 | 杭州万得斯环保科技有限公司 | Efficient inorganic environment-friendly conditioner for deep dewatering of sludge |
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