CN102963953A - Method for treating coal washing wastewater - Google Patents

Method for treating coal washing wastewater Download PDF

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Publication number
CN102963953A
CN102963953A CN 201210499465 CN201210499465A CN102963953A CN 102963953 A CN102963953 A CN 102963953A CN 201210499465 CN201210499465 CN 201210499465 CN 201210499465 A CN201210499465 A CN 201210499465A CN 102963953 A CN102963953 A CN 102963953A
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CN
China
Prior art keywords
parts
coal washing
calcium hydroxide
washing wastewater
polyacrylamide
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Pending
Application number
CN 201210499465
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Chinese (zh)
Inventor
肖朋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DALIAN DONGTAI INDUSTRIAL WASTE TREATMENT Co Ltd
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DALIAN DONGTAI INDUSTRIAL WASTE TREATMENT Co Ltd
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Application filed by DALIAN DONGTAI INDUSTRIAL WASTE TREATMENT Co Ltd filed Critical DALIAN DONGTAI INDUSTRIAL WASTE TREATMENT Co Ltd
Priority to CN 201210499465 priority Critical patent/CN102963953A/en
Publication of CN102963953A publication Critical patent/CN102963953A/en
Pending legal-status Critical Current

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Abstract

The invention provides a method for treating coal washing wastewater. The method is characterized in that the coal washing wastewater is treated by using a composition comprising active carbon, zeolite minerals, montmorillonite, polyacrylamide, aluminium polychlorid and calcium hydroxide. According to the method, organic matters and inorganic matters, and other impurities in the coal washing wastewater can be efficiently and rapidly absorbed and removed, and emission on standard of the coal washing wastewater is realized. The method has the advantages of low cost, no toxicity and no corrosion.

Description

A kind of method of coal-washing wastewater treatment
Technical field
The invention belongs to technical field of waste water processing, be specifically related to a kind of method of coal-washing wastewater treatment.
Background technology
Existing method of wastewater treatment has physical treatment process, method of chemical treatment, biological treatment.
Physical treatment process is the most original water treatment method, is the method for separating, reclaim undissolved suspended state pollutent in the sewage by modes such as gravity stratification, centrifugal or filtrations.The method is simple, but can only do some simple wastewater treatments, and processing is very incomplete, is difficult to qualified discharge.
Method of chemical treatment mainly is the method with medicament and the pollutent thrown in neutralize, the chemical reactions such as coagulation, redox carry out wastewater treatment.But the method process range is narrow, the wastewater treatment ability many to organism.
Biological treatment is that the metabolism by microorganism makes organic pollutant in the sewage be converted into the method for stable harmless object.But the method treatment scheme is long, facility investment is large, operating cost is high, heavy metal ion is difficult to remove.
Summary of the invention
The present invention aims to provide the method for a kind of high-level efficiency, low-cost processes coal washing waste water.
Particularly, the present invention is a kind of method of coal-washing wastewater treatment, it is characterized in that, uses the compositions-treated coal washing waste water of following component: gac, zeolite group mineral, montmorillonite, polyacrylamide, polymerize aluminum chloride, calcium hydroxide.
Wherein, each constituent mass proportion optimization of described composition is: gac 15-25 part, zeolite group mineral 15-20 part, montmorillonite 15-25 part, polyacrylamide 5-10 part, polymerize aluminum chloride 8-15 part, calcium hydroxide 8-15 part, more preferably: gac 20-25 part, zeolite group mineral 18-20 part, montmorillonite 15-18 part, polyacrylamide 5-8 part, polymerize aluminum chloride 10-13 part, calcium hydroxide 10-13 part are particularly preferably: 22 parts of gacs, 19 parts of zeolite group minerals, 16 parts of montmorillonites, 6 parts of polyacrylamides, 12 parts of polymerize aluminum chlorides, 12 parts in calcium hydroxide.
Gac claims again active black, is black powder shape or the granular decolorizing carbon that obtains through charing, activation and aftertreatment with raw materials such as coal, timber and shells.Gac has pore structurally because the microcrystalline carbon irregular alignment between cross connection, can produce the carbon tissue defects during activation, so it is a kind of porous carbon, and tap density is low, and pore texture is flourishing, the large (1500m of specific surface area 2More than/the g), high adsorption capacity, be widely used in the deep purifying of tap water, process water and waste water, industrial purification of water quality and the Gas Phase Adsorption, such as power plant, petrochemical industry, refinery, food-drink, sugaring wine processed, medicine, electronics, breed fish, the purification of water quality of the industry such as sea-freight processes, free chlorine, phenol, sulphur and other organic pollutant in the energy active adsorption water, particularly the precursor of mutagen (THM) reaches the purpose that purification and impurity removal removes peculiar smell.
Zeolite group mineral is a kind of moisture basic metal or the manosil AS mineral of alkaline-earth metal, has the three-dimensional framework that is consisted of by silicon (aluminium) oxygen tetrahedron, hole of all sizes and passage are arranged in the skeleton, these holes and passage play the effect of strainer and molecular sieve, can optionally adsorb or filtered wastewater in organism or inorganics, therefore be widely used in the aspects such as sewage purification.
Montmorillonite has another name called montmorillonite, is the layer mineral that is made of the superfine hydrous alumino silicates of particle, has very strong adsorptive power and cation exchange property, is extensively applied in the chemical reaction to produce adsorption and cleaning action.When montmorillonite and zeolite group mineral use together, can make montmorillonite and zeolite group mineral play complementary collaborative effect by micro-porous adsorption and ion-exchange.
Polyacrylamide is that molecular weight has good flocculence by millions of to several macromolecular water-soluble organic polymers of ten million, can reduce the frictional resistance between the liquid, forms larger flco and produce thus huge surface adsorption effect between particle.Process the use polyacrylamide for coal washing waste water and generally be divided into two processes: the one, the charge neutralization of polymer electrolyte and particle surface; The 2nd, the long-chain of polymer electrolyte and tiny suspended particles are built bridge and are formed thicker floc sedimentation, and along with the increase of floc sedimentation, settling velocity increases gradually.Domestic representational high polymer polyacrylamide has at present: non-ionic polyacrylamide (is write a Chinese character in simplified form NPAM, molecular weight 800-1500 ten thousand), anion-polyacrylamide (is write a Chinese character in simplified form APAM, molecular weight 800-2000 ten thousand), cationic polyacrylamide (is write a Chinese character in simplified form CPAM, molecular weight 800-1200 ten thousand, ion degree 10%-80%).
Polymerize aluminum chloride is the formal a kind of novel high polymer coagulating agent water-purifying material that drops into industrial production and application of the eighties of last century later stage sixties. owing to it has the series of advantages such as adding less, that purification efficiency is high, the rear water quality of filter is good, cost is low, development in recent years is very rapid, and be widely used in up and down in the processes such as water, cycling use of water, Industrial Wastewater Treatment and sludge dewatering, also be that the departments such as chemical industry, light industry are widely used in a kind of important medicament in the solid-liquid separation operation.
Calcium hydroxide is commonly called as white lime or slaked lime, is white solid, is slightly soluble in water, and its aqueous solution often is called liming, is alkalescence, have the general character of alkali, but its alkalescence or corrodibility is all than a little less than the sodium hydroxide.Use calcium hydroxide can in and the acidic component in the coal washing waste water, the adsorption that improves above-mentioned each sorbent material.
The present invention can be efficiently, adsorb rapidly, remove the impurity such as organism in the coal washing waste water and inorganics, realize the qualified discharge of waste water, and the method cost is low, nontoxic, non-corrosiveness.
Embodiment
Describe the present invention in detail below in conjunction with embodiment; but the following examples only are the better embodiment of the present invention; protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Embodiment 1
Get the composition of following quality proportioning: 15 parts of gacs, 20 parts of zeolite group minerals, 0 part of montmorillonite 2,5 parts of polyacrylamides, 13 parts of polymerize aluminum chlorides, 13 parts in calcium hydroxide.Get the 5g said composition, join in the 1L coal washing waste water, stirred 15 minutes, standing demix filters the water that obtains clarifying.Inorganics and organic amount in the water before and after processing are measured, and the result shows that the clearance of these impurity has all reached more than 86%.
Embodiment 2
Get the composition of following quality proportioning: 22 parts of gacs, 20 parts of zeolite group minerals, 16 parts of montmorillonites, 5 parts of polyacrylamides, 10 parts of polymerize aluminum chlorides, 10 parts in calcium hydroxide.Get the 5g said composition, join in the 1L coal washing waste water, stirred 20 minutes, standing demix filters the water that obtains clarifying.Inorganics and organic amount in the water before and after processing are measured, and the result shows that the clearance of these impurity has all reached more than 80%.
Embodiment 3
Get the composition of following quality proportioning: 22 parts of gacs, 19 parts of zeolite group minerals, 16 parts of montmorillonites, 6 parts of polyacrylamides, 12 parts of polymerize aluminum chlorides, 12 parts in calcium hydroxide.Get the 6g said composition, join in the 1L coal washing waste water, stirred 15 minutes, standing demix filters the water that obtains clarifying.Inorganics and organic amount in the water before and after processing are measured, and the result shows that the clearance of these impurity all reaches more than 82%.

Claims (4)

1. the method for a coal-washing wastewater treatment is characterized in that, uses the compositions-treated coal washing waste water of following component: gac, zeolite group mineral, montmorillonite, polyacrylamide, polymerize aluminum chloride, calcium hydroxide.
2. method according to claim 1, it is characterized in that each constituent mass proportioning of described composition is: gac 15-25 part, zeolite group mineral 15-20 part, montmorillonite 15-25 part, polyacrylamide 5-10 part, polymerize aluminum chloride 8-15 part, calcium hydroxide 8-15 part.
3. method according to claim 1, it is characterized in that each constituent mass proportioning of described composition is: gac 20-25 part, zeolite group mineral 18-20 part, montmorillonite 15-18 part, polyacrylamide 5-8 part, polymerize aluminum chloride 10-13 part, calcium hydroxide 10-13 part.
4. method according to claim 1 is characterized in that, each constituent mass proportioning of described composition is: 22 parts of gacs, 19 parts of zeolite group minerals, 16 parts of montmorillonites, 6 parts of polyacrylamides, 12 parts of polymerize aluminum chlorides, 12 parts in calcium hydroxide.
CN 201210499465 2012-11-28 2012-11-28 Method for treating coal washing wastewater Pending CN102963953A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103739049A (en) * 2013-12-26 2014-04-23 青岛中科菲力工程技术研发有限公司 Purifying treatment agent for coal-washing wastewater and preparation method thereof
CN105110441A (en) * 2015-09-30 2015-12-02 宁波保税区韬鸿化工科技有限公司 Water treatment agent and preparing method
CN105129943A (en) * 2015-08-31 2015-12-09 陕西省地质矿产实验研究所 Coagulant for treating fine-grained high-viscosity soil slime water
CN105198056A (en) * 2015-09-30 2015-12-30 宁波保税区韬鸿化工科技有限公司 Paper making waste water treating agent and preparation method thereof
CN106242179A (en) * 2016-08-29 2016-12-21 湖北宜化集团有限责任公司 The compositions of a kind of quasi-east coal chemical industrial waste water process and method of wastewater treatment thereof
CN106277250A (en) * 2016-08-31 2017-01-04 赵卫平 A kind of process technique of coal washing waste water
CN106277358A (en) * 2016-08-29 2017-01-04 湖北宜化集团有限责任公司 The flocculant of a kind of quasi-east coal chemical industrial waste water process and processing method thereof
CN106277359A (en) * 2016-08-29 2017-01-04 湖北宜化集团有限责任公司 The flocculating agent composition of a kind of quasi-east coal chemical industrial waste water process and method of wastewater treatment thereof
CN107140709A (en) * 2017-04-28 2017-09-08 四川和鼎环保工程有限责任公司 Purifying agent for polluted water and preparation method thereof
CN107235546A (en) * 2017-06-28 2017-10-10 徐州东兴能源有限公司 A kind of coal washing flocculant and preparation method thereof
CN112939176A (en) * 2021-02-02 2021-06-11 滨州中科催化技术有限公司 Coal washing wastewater treating agent, and preparation method and application thereof

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103739049A (en) * 2013-12-26 2014-04-23 青岛中科菲力工程技术研发有限公司 Purifying treatment agent for coal-washing wastewater and preparation method thereof
CN105129943A (en) * 2015-08-31 2015-12-09 陕西省地质矿产实验研究所 Coagulant for treating fine-grained high-viscosity soil slime water
CN105129943B (en) * 2015-08-31 2017-08-08 陕西省地质矿产实验研究所 Coagulant for treating fine-grained high-viscosity soil slime water
CN105110441A (en) * 2015-09-30 2015-12-02 宁波保税区韬鸿化工科技有限公司 Water treatment agent and preparing method
CN105198056A (en) * 2015-09-30 2015-12-30 宁波保税区韬鸿化工科技有限公司 Paper making waste water treating agent and preparation method thereof
CN106277358A (en) * 2016-08-29 2017-01-04 湖北宜化集团有限责任公司 The flocculant of a kind of quasi-east coal chemical industrial waste water process and processing method thereof
CN106277359A (en) * 2016-08-29 2017-01-04 湖北宜化集团有限责任公司 The flocculating agent composition of a kind of quasi-east coal chemical industrial waste water process and method of wastewater treatment thereof
CN106242179A (en) * 2016-08-29 2016-12-21 湖北宜化集团有限责任公司 The compositions of a kind of quasi-east coal chemical industrial waste water process and method of wastewater treatment thereof
CN106277250A (en) * 2016-08-31 2017-01-04 赵卫平 A kind of process technique of coal washing waste water
CN107140709A (en) * 2017-04-28 2017-09-08 四川和鼎环保工程有限责任公司 Purifying agent for polluted water and preparation method thereof
CN107235546A (en) * 2017-06-28 2017-10-10 徐州东兴能源有限公司 A kind of coal washing flocculant and preparation method thereof
CN112939176A (en) * 2021-02-02 2021-06-11 滨州中科催化技术有限公司 Coal washing wastewater treating agent, and preparation method and application thereof
CN112939176B (en) * 2021-02-02 2023-01-17 滨州中科催化技术有限公司 Coal washing wastewater treating agent, and preparation method and application thereof

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Application publication date: 20130313