CN104310884B - One kind of reinforcing attapulgite dyeing sludge disposal curing agent and curing method - Google Patents

One kind of reinforcing attapulgite dyeing sludge disposal curing agent and curing method Download PDF

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CN104310884B
CN104310884B CN201410526438.3A CN201410526438A CN104310884B CN 104310884 B CN104310884 B CN 104310884B CN 201410526438 A CN201410526438 A CN 201410526438A CN 104310884 B CN104310884 B CN 104310884B
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sludge
attapulgite
additive
curing
ratio
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CN104310884A (en
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任洪强
张瑞
丁丽丽
耿金菊
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南京大学
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Abstract

本发明公开了一种凹凸棒土强化印染污泥处理处置用固化剂及其固化方法,属于印染污泥处理技术领域。 The present invention discloses a reinforced attapulgite dyeing sludge disposal curing agent and curing method belongs to the field of printing technology sludge treatment. 本发明的固化剂中凹凸棒土和复合添加剂的质量比为(0.05~0.3):(0.3~1.2);复合添加剂中水泥、粉煤灰和氯化钙的质量比为(1~6):(0~5):(0~0.18);本发明的固化步骤为:(1)确定复合添加剂、凹凸棒土的添加比例;(2)将复合添加剂和凹凸棒土破碎研磨,过35目筛;(3)将印染污泥、凹凸棒土、复合添加剂混合搅匀;(4)将搅拌产物分层填装于模具内,一天后脱模,室温养护1~28天。 Curing agent of this invention and the composite mass ratio of attapulgite additive (0.05 to 0.3) :( 0.3 to 1.2); Mass additive composite cement, fly ash and calcium chloride ratio of (1 to 6): (0-5) :( 0 to 0.18); the curing step of the present invention are: (1) determining the addition ratio of an additive compound, attapulgite; (2) the compound additive and crushed milled attapulgite, through a 35 mesh screen ; (3) the sludge printing, attapulgite, compound additive mixture, stir; (4) the layered product was stirred filled in a mold, the day after the release, 1 to 28 days curing at room temperature. 本发明改善了印染厂出厂污泥的土工性能,提高了固化污泥的机械强度,降低了污染物的浸出能力,便于污泥的卫生填埋和资源化利用。 The present invention improves the dyeing factory sludge geotechnical properties, improved mechanical strength of the solidified sludge, reducing the ability of leaching of contaminants, sludge facilitates sanitary landfill and resource utilization.

Description

一种凹凸棒土强化印染污泥处理处置用固化剂及其固化方法 One kind of reinforcing attapulgite dyeing sludge disposal curing agent and curing method

技术领域 FIELD

[0001]本发明涉及环境污染控制末端、固体废物安全处置技术领域,更具体地说,涉及印染污泥处理处置过程中的固化剂组分,及利用该固化剂最终处置印染污泥的方法。 [0001] The present invention relates to environmental pollution control terminal, the safe disposal of solid waste technical field, and more particularly, relates to a curing agent component dyeing sludge treatment process, and by using the curing agent of the final disposal of sludge printing.

背景技术 Background technique

[0002] 印染废水为典型难处理工业废水之一,其处理过程通常采用物化和生化处理工艺,在处理过程中会产生大量的污泥。 [0002] One of the typical refractory dyeing wastewater is industrial wastewater, which process typically employs physicochemical and biological treatment processes, the process will produce large amounts of sludge. 由于印染废水中含有大量的染料、助剂、浆料、重金属等复杂难降解物质,因而,印染污泥具有成分复杂、特殊和难处理的特性。 Since the wastewater contains a large amount of printing dyes, additives, slurry, heavy metals and other complex refractory material, therefore, it has a characteristic dyeing sludge complex composition, special and intractable.

[0003]污泥通常有焚烧、堆肥、填埋、资源化利用等处理手段。 [0003] Sludge usually incineration, composting and landfill, resource utilization processing means. 由于焚烧成本高,容易产生二次污染,堆肥又可能对农作物带来重金属毒害等问题,因而填埋和资源化利用是目前污泥处置相对更普遍接受的方式。 Due to the high cost of incineration, prone to secondary pollution, compost and other issues may bring heavy metal poisoning crops, thus landfills and resource utilization of sludge disposal is relatively more generally acceptable way. 但是,通常印染厂出厂污泥含水率高、成分复杂、有恶臭、土工性能差,不适合直接进入卫生填埋场,也不能满足安全回用对污染物浸出浓度的控制要求。 However, in general high moisture content sludge dyeing factory, complex composition with odor, poor geotechnical properties, are not suitable for direct access to a sanitary landfill, can not meet the security requirements for leaching back control the concentration of contaminants. 因而需要对印染污泥进行固化稳定处理,提高污泥的机械强度,降低污染物质的浸出能力。 Therefore the need for a curing printing sludge stabilization process, to improve the mechanical strength of the sludge, the ability to reduce the leaching of contaminants. 选择合适的固化剂对于缩短污泥处置时间,提高处理性能,降低处理成本具有极大的意义。 Selecting a suitable curing agent for sludge disposal shorten the time and improve the processing performance, reducing the cost of great significance.

[0004]凹凸棒土,又名坡缕石,是一种含镁硅组分的粘土矿物,化学分子式为Mg5Si8O20(OH)2(OH2)4.4出0。1862年俄国学者最早在乌拉尔矿区发现并命名为坡缕石。 [0004] attapulgite, also known as palygorskite clay minerals containing magnesium silicon component, the chemical formula Mg5Si8O20 (OH) 2 (OH2) 4.4 as 0 Russian researchers first discovered in 1862 in the Ural Mining and named palygorskite. 1935年法国学者在凹凸堡发现新粘土,并命名为凹凸棒土,后证明与坡缕石结构相同,我国对凹凸棒土研究起步较晚与国际尚有一定差距。 In 1935 French researchers found that new bump in Fort clay, attapulgite and named after the same proven palygorskite structure, and of late there is a certain gap between the international study of attapulgite start. 但凹凸棒土在我国储量巨大,占世界的一半以上,易于获得。 But the great attapulgite in our reserves, accounting for more than half of the world's readily available. 凹凸棒土独特的层链状晶体结构和较大的比表面积,极大的扩展了其应用领域,合理利用其较强的吸附性能可以有效固化污泥中的金属成分和有机组分。 Unique chain attapulgite layer crystal structure and large specific surface area, which greatly expanded the field of application, the rational use of its strong adsorption performance can be effectively cured sludge metal component and organic components.

[0005] 经检索,中国专利申请号200810036184.1,申请日为2008年4月17日,发明创造名称为:一种污泥固化剂以及应用,该申请案公开了一种用于市政污水处理厂排水污泥和河道污泥的固化剂以及应用,固化剂由硫铝酸盐水泥、石膏、石灰以及促凝剂按照一定比例混合,然后和污泥搅拌,使得污泥能够达到填埋或者其他建筑材料要求的土力学性能。 [0005] retrieved, Chinese Patent Application No. 200810036184.1, filed April 17, 2008, entitled created: Sludge curing agent and an application, the application discloses a method for municipal wastewater treatment plant drainage river sludge and sludge and the application of the curing agent, the curing agent by mixing a certain percentage of cement, gypsum, lime and coagulant, the sludge and then stirred, so that the sludge landfill or other building materials can be achieved the mechanical properties of the soil requirements. 污泥固化剂包括各组分原料的质量比为:硫铝酸盐水泥30%-60%,石膏20%-40%,石灰8%-20%,促凝剂1%-5%。 Curing agents include sludge mass ratio of the respective components of the feedstock: sulfur cement 30% -60%, 20% -40% gypsum, lime 8% -20%, coagulant 1-5%. 污泥添加固化剂搅拌固化后,养护1-6天的时间,即可达到填埋要求的强度和含水量。 After stirring the sludge curing agent curing, curing 1-6 days, and can meet the strength requirements of the moisture content of the landfill. 该申请案污泥固化后,有毒重金属离子被包裹,使得污泥的污染降低,被固化的污泥没有原始污泥的恶臭,减少了作业时对操作人员的危害。 After application of the solidified sludge, toxic heavy metal ions are wrapped, so that contamination of the sludge is reduced, odor is not cured raw sludge the sludge, reducing the hazard to the operator's job. 但该申请案针对于固化市政处理厂污泥和河道污泥,其处理对象组分中金属含量以及危险程度均低于工业印染污泥,同时该申请案抗压强度数值刚刚超过50kPa,没有一定的裕量,也没有量化说明各种污染物具体固化效果,实际指导意义有所欠缺。 However, the application is directed to curable river sludge and municipal sludge treatment plants, which processed and the metal content of component risk level are below the printing industry sludge, while the application of just over 50 kPa compressive strength values, not necessarily the margin did not quantify illustrate the various specific curing effect of pollutants, practical guidance is lacking.

[0006] 中国专利号ZL201110342103.2,授权公告日为2013年7月24日,发明创造名称为:重金属污染底泥固化剂,该申请案的固化剂包括质量分数为20%〜50%的水泥,质量分数为40 %〜70 %的粉煤灰,质量分数为5%〜15 %的膨润土和质量分数为3 %〜6 %的外加剂;外加剂包括硝酸钙、亚硝酸钠、偏铝酸钠、硫酸钠、木质素磺酸钠、十二烷基硫酸钠和三乙醇胺,该申请案的固化剂处理底泥后固化体强度高,浸出液pH和重金属浸出浓度得到很大程度降低。 [0006] Chinese patent No. ZL201110342103.2, authorized announcement is July 24, 2013, the creation entitled: heavy metal contaminated sediment curing agents, the application of the curing agent include mass fraction of 20% ~ 50% of cement , mass fraction of 40% ~ 70% fly ash, mass fraction of 5% ~ 15% of bentonite and mass fraction of 3% ~ 6% in admixture; admixture comprises calcium nitrate, nitrite, aluminate which sodium sulfate, sodium lignosulfonate, sodium lauryl sulfate and triethanolamine, the application of a curing agent curing process sediment after high strength, pH and heavy metal leaching leachate concentration is reduced to a large extent. 但该申请案的固化剂组分繁多,操作复杂,同时固化目的性不明确,若用于填埋,夕卜加剂添加量过大,成本过高;若用于建材,参考国外建材标准,金属浸出浓度过高。 However, the application range of the curing agent component, a complex operation, while an explicit aim of curing, if used for landfill, Xi clandestine laboratories agent added is too large, high cost; if used in building materials, building materials foreign standard reference, leaching the metal concentration is too high.

发明内容 SUMMARY

[0007] 1.发明要解决的技术问题 [0007] 1. Invention Technical Problem

[0008] 本发明的目的在于针对现有印染污泥固化稳定处理工艺污泥处置时间长、污泥固化体机械强度低、污染物浸出浓度高等问题,提供了一种凹凸棒土强化印染污泥处理处置用固化剂及其固化方法,本发明改善了印染厂出厂污泥的土工性能,提高了固化污泥的机械强度,降低了污染物的浸出能力,便于污泥的卫生填埋和资源化利用。 [0008] The object of the present invention is stable for a conventional dyeing sludge treatment process sludge disposal curing time is long, the low mechanical strength of solidified sludge, higher concentrations of pollutants leaching problem, there is provided a printing attapulgite reinforced sludge disposal curing agent and curing method of the present invention improves the dyeing factory geotechnical properties of the sludge, to improve the mechanical strength of the solidified sludge, reducing the ability of leaching of contaminants to facilitate sanitary landfill and recycling sludge use.

[0009] 2.技术方案 [0009] 2. Technical Solution

[0010]为达到上述目的,本发明提供的技术方案为: [0010] To achieve the above object, the present invention provides the technical solution as follows:

[0011] 本发明的一种凹凸棒土强化印染污泥处理处置用固化剂,包括复合添加剂和凹凸棒土,所述的复合添加剂包括水泥、粉煤灰和氯化钙,水泥、粉煤灰和氯化钙的质量比为(I〜6): (O〜5): (O〜0.18);所述的凹凸棒土和复合添加剂的质量比为(0.05〜0.3):(0.3〜1.2)0 [0011] A attapulgite-reinforced dyeing treatment and disposal of sludge with a curing agent, and an additive comprising a compound attapulgite, said additive comprising a composite cement, fly ash and calcium chloride, cement, fly ash and the mass ratio of calcium chloride (I~6): (O~5): (O~0.18); and a mass of the composite attapulgite additive ratio (0.05~0.3) :( 0.3~1.2) 0

[0012] 更进一步地,印染污泥、凹凸棒土和复合添加剂的质量比(0.1〜I):(0.05〜0.3):(0.3〜1.2)0 [0012] Still further, the sludge quality printing, attapulgite and compound additive ratio (0.1~I) :( 0.05~0.3) :( 0.3~1.2) 0

[0013]更进一步地,所述的复合添加剂中水泥、粉煤灰和氯化钙的质量比为2:5:0.06,所述的印染污泥、凹凸棒土和复合添加剂的质量比为1:0.2:0.706;该配比下印染污泥固化体满足卫生填埋标准。 [0013] Furthermore, the quality of the compound additive in cement, fly ash and calcium chloride ratio of 2: 5: 0.06, the mass ratio sludge printing, attapulgite, and the additive is a compound : 0.2: 0.706; dyeing solidified sludge landfill satisfies the standards at this ratio.

[0014]更进一步地,所述的复合添加剂中水泥、粉煤灰和氯化钙的质量比为1:0:0,所述的印染污泥、凹凸棒土和复合添加剂的质量比为0.433:0.133:0.433;该配比下印染污泥固化体满足欧盟建材铺路相关标准。 [0014] Further, the mass ratio of the additive in cement, fly ash and calcium chloride to 1: 0: 0, the sludge quality printing, attapulgite and compound additives ratio 0.433 : 0.133: 0.433; dyeing building materials solidified sludge satisfies the European standards paving this ratio.

[0015]本发明的一种凹凸棒土强化印染污泥处理处置用固化剂固化方法,其步骤为: [0015] A attapulgite-reinforced dyeing sludge disposal curing agent curing method, comprising the steps of:

[0016] (I)根据污泥特性及固化体去向,确定复合添加剂所含各组分的比例以及复合添加剂、凹凸棒土的添加比例; [0016] (I) and cured according to the whereabouts of sludge characteristics, determining the ratio of the components contained in the additive package and compound additives, the ratio of attapulgite clay is added;

[0017] (2)将复合添加剂和凹凸棒土破碎研磨,过35目筛; [0017] (2) The compound additives and crushed milled attapulgite, through a 35 mesh screen;

[0018] (3)按步骤(I)确定比例,将印染污泥、凹凸棒土、复合添加剂混合搅匀; [0018] (3) according to step (I) determining the ratio of the sludge printing, attapulgite, composite additives stir;

[0019] (4)将搅拌产物分层填装于模具内,一天后脱模,室温养护I〜28天。 [0019] (4) The layered product was stirred filled in a mold, the day after the release, I~28 days curing at room temperature.

[0020]更进一步地,先按照水泥、粉煤灰和氯化钙质量比为2:5:0.06的比例混合制得复合添加剂,再将印染污泥、凹凸棒土和复合添加剂按质量比为1: 0.2:0.706的比例混合,室温养护I天,制备得到的印染污泥固化体满足卫生填埋标准。 5:: ratio of 0.06 is prepared by mixing a compound additives, and then dyeing sludge, attapulgite, and a mass ratio of compound additives [0020] Still further, according to the first cement, fly ash, and calcium chloride was 2 mass ratio of 1: 0.2: 0.706 mixture ratio, I day at room temperature curing, prepared by dyeing solidified sludge landfill satisfies the standards.

[0021]更进一步地,先按照水泥、粉煤灰和氯化钙质量比为1:0:0的比例混合制得复合添加剂,再将印染污泥、凹凸棒土和复合添加剂按质量比为0.433:0.133:0.433的比例混合,室温养护28天,制备得到的印染污泥固化体满足欧盟建材铺路相关标准。 0:: [0021] Still further, according to the first cement, fly ash and calcium chloride ratio is 0 mass ratio of 1 is prepared by mixing a compound additives, and then dyeing sludge, attapulgite, and a mass ratio of compound additives 0.433: 0.133: 0.433 ratio of mixing, curing 28 days at room temperature, prepared by dyeing the sludge cured building materials meet European standards paving.

[0022]更进一步地,步骤(3)采用JJ-5水泥砂浆搅拌机,搅拌强度为先低速搅拌10分钟,后高速搅拌5分钟。 [0022] Furthermore, step (3) JJ-5 cement mortar mixer, stirring intensity is first stirred at low speed for 10 minutes, high-speed stirring for 5 minutes.

[0023] 3.有益效果 [0023] 3. The beneficial effects

[0024]采用本发明提供的技术方案,与已有的公知技术相比,具有如下显著效果: [0024] The technical solution provided by the invention, as compared with conventional known technique, having the following remarkable effects:

[0025] (I)本发明的一种凹凸棒土强化印染污泥处理处置用固化剂,通过添加凹凸棒土和复合配比的传统添加剂水泥、粉煤灰和氯化钙,与印染污泥中的水产生一系列化学反应,改善污泥的土工性能,缩短固化时间,通过固化剂各组分的不同搭配可改善污泥特性,满足进垃圾填埋厂、修路或者作为绿化用建筑材料等不同的实际需求; [0025] (I) of the present invention, one kind of reinforcing attapulgite printing hardener sludge disposal, and by adding the composite ratio of attapulgite conventional additives cement, fly ash and calcium chloride, and the sludge printing the water generated series of chemical reactions, improving the geotechnical properties of sludge, shorten the curing time, with each of the different components of a curing agent can improve the characteristics of the sludge, meet the requirements for landfills, road construction material or as a greening such as different actual demand;

[0026] (2)本发明的一种凹凸棒土强化印染污泥处理处置用固化剂固化方法,固化操作简单,组分价廉易得,固化强度可适应多种情况,污染物固定效果好,具有良好的可推广性和实用性。 [0026] (2) A-reinforced attapulgite printing sludge treatment method of curing a curing agent, a curing operation is simple, readily available and inexpensive components, the curing strength may be adapted to various circumstances, good fixing effect contaminants , has good promotion and practicality.

附图说明 BRIEF DESCRIPTION

[0027]图1为采用本发明提供的固化剂得到的印染污泥固化体的XRD图。 [0027] FIG. 1 is a XRD pattern printing using sludge cured body of the present invention provides a curing agent is obtained.

具体实施方式 Detailed ways

[0028]为进一步了解本发明的内容,结合附图和实施例对本发明作详细描述。 [0028] To better understand the present invention, in conjunction with the accompanying drawings and embodiments of the present invention is described in detail.

[0029] 实施例1 [0029] Example 1

[0030]本实施例的一种凹凸棒土强化印染污泥处理处置用固化剂,包括复合添加剂和凹凸棒土,所述的复合添加剂包括水泥、粉煤灰和氯化钙。 [0030] The present embodiment is one kind of reinforcing attapulgite dyeing treatment and disposal of sludge with a curing agent, and an additive comprising a compound attapulgite, said additive comprising a composite cement, fly ash and calcium chloride. 根据污泥含水率,有机物含量和重金属含量及污泥固化应用目的,结合设计软件design expert8.0.6,新建任务之后在mixture选项卡中选择Optimal类型,设定组分个数以及各组分最大最小值。 The sludge moisture content, heavy metal content and organic content and solidified sludge application purposes, in conjunction with design software design expert8.0.6, after selecting the new task type mixture Optimal tab, set the number of components as well as the maximum and minimum of the components value. 选择响应指标后确定复合添加剂所含各组分的比例以及复合添加剂、凹凸棒土的添加比例。 After selecting the OK response index ratio of the components contained in the additive package and compound additives, the ratio of attapulgite clay is added. 鉴于本实施例固化得到的印染污泥固化体主要用于卫生填埋。 In view of the present embodiment is obtained by curing the cured printing sludge mainly for sanitary landfill. 复合添加剂中水泥、粉煤灰和氯化钙的质量比为2 = 5:0.06,印染污泥、凹凸棒土和复合添加剂的质量比为1:0.2:0.706。 Composite additives cement, fly ash, and 2 mass ratio of calcium chloride = 5: 0.06, ratio of sludge quality printing, and compound attapulgite additive is 1: 0.2: 0.706.

[0031]按照上述比例将168.4g水泥、421.1g粉煤灰和5.05g氯化钙混合得到复合添加剂,然后将复合添加剂和凹凸棒土破碎研磨,过35目筛,以使后续混合更加均匀。 [0031] According to the above cement ratio will 168.4g, 421.1g 5.05g of calcium chloride obtained by mixing fly ash and the additive compound, the compound additive and then crushed and milled attapulgite, through a 35 mesh screen, so that subsequent more uniform mixing. 在842.1g含水率为86 %的印染污泥中加入168.4g凹凸棒土和上述复合添加剂,置于JJ-5水泥砂浆搅拌机中混合搅勾。 168.4g was added and the composite attapulgite additive 842.1g of 86% aqueous dyeing sludge, placed JJ-5 cement mortar mixer mixing stir hook. JJ-5水泥砂楽搅拌机的转速为:低速自转140 土5r/min,公转62 土5r/min ;高速自转285±10r/min,公转125±10r/min。 JJ-5 cement sand yue stirrer speed is: 140 Soil low rotation 5r / min, 62 soil revolution 5r / min; high-speed rotation of 285 ± 10r / min, revolution 125 ± 10r / min. 将印染污泥、凹凸棒土、复合添加剂的混合物先低速搅拌10分钟,后高速搅拌5分钟,混合均勾。 The dyeing mixture is sludge, attapulgite, compound additive to a low speed stirring for 10 minutes, high-speed stirring for 5 minutes, mixing was hook. 将搅拌产物室温下分层填装于70.7mm X70.7mm X 70.7mm模具内压实,成型24h后采用压缩空气脱模,压缩空气压强为6Bar,室温养护I天。 The product was stirred at room temperature for hierarchical filled into the compacting mold 70.7mm X70.7mm X 70.7mm, 24h after forming the release compressed air, the compressed air pressure conservation I 6Bar days, at room temperature.

[0032] 养护I天后印染污泥固化体的无侧限抗压强度达到335.75kPa。 [0032] No side printing sludge days conservation I unconfined compressive strength of the cured body reaches 335.75kPa. 对样品做XRD分析,如图1所示,固化体主要晶体结构显示为石英、方解石和硅酸三钙,从侧面也印证了CSH凝胶的存在。 XRD analysis of the sample was subjected to, as shown in Figure 1, the main crystal structure of the cured body is displayed as quartz, calcite, and tricalcium silicate, from the side of the gel confirmed the presence of CSH. 采用硫酸硝酸法(HJ/T299-2007)对固化体做浸出毒性测试,其中浸出液中Cu和Pb的浓度为0.455mg/L和0.1827mg/L,满足卫生填埋及建筑填土相关要求。 Using nitric acid-sulfuric acid method (HJ / T299-2007) made of cured Leaching toxicity test in which the leaching solution of Cu and Pb was 0.455mg / L and 0.1827mg / L, to meet sanitary landfill construction and fill requirements.

[0033]发明人指出,本实施例虽然采用传统添加剂水泥、粉煤灰和氯化钙组成复合添加剂,但本实施例通过对凹凸棒土、水泥、粉煤灰、氯化钙和印染污泥进行比例调配,使凹凸棒土、复合配比的传统添加剂水泥、粉煤灰和氯化钙,与印染污泥中的水产生一系列化学反应。 [0033] The inventors noted that, although the present embodiment uses conventional additives cement, fly ash and calcium chloride compound additives, but the present embodiment by attapulgite, cement, fly ash, calcium chloride and dyeing sludge a proportional allocation, so attapulgite, composite ratio of the conventional additives cement, fly ash and calcium chloride, to produce a series of chemical reactions with water sludge printing. 其中,水泥组分中的硅酸三钙、硅酸二钙、铝酸三钙、铁铝酸钙等化合物与水进行水化反应,形成钙矾石和CSH凝胶等针状或棒状结构。 Wherein the cement component of tricalcium silicate, dicalcium silicate, tricalcium aluminate, iron-aluminum and calcium compound with water for hydration, ettringite and the CSH formed gel like or needle-like rod-like structure. 粉煤灰与印染污泥成分进行火山灰反应,显著增强污泥的机械抗压强度。 Fly ash and sludge constituents printing pozzolanic reaction, significantly enhance the compressive strength of the mechanical sludge. 凹凸棒土具有良好的吸附特性,可以降低污泥中金属的渗出,与类似的粘土膨润土相比,凹凸棒土结构为链状,相对于膨润土的层状结构更稳定,其表面积和吸附容量均高于膨润土。 Attapulgite having good adsorption properties, may be reduced in exudation of metal sludge, compared to a similar bentonite clay, attapulgite a chain structure, a layered structure is more stable with respect to bentonite, surface area and adsorption capacity They were higher than bentonite. 氯化钙的加入可提高水泥水化反应中钙的浓度,推动水化过程向产生钙矾石和CSH的过程进行,缩短水泥的水化反应时间。 Calcium chloride can increase the concentration of calcium in the hydration reaction of cement, to promote the hydration process to produce ettringite and the CSH process, to shorten the reaction time of hydration of cement. 凹凸棒土、水泥、粉煤灰和氯化钙各司其职又相互促进,固化印染污泥的土工性能、机械强度等污泥特性得到显著改善,污染物的浸出能力也显著降低,达到了进垃圾填埋厂卫生填埋的标准。 Attapulgite, cement, fly ash, and calcium chloride and mutual promotion of their duties, sludge sludge geotechnical properties of the cured printing performance and mechanical strength has been significantly improved, the ability to leach contaminants also significantly reduced, reaching into landfill sanitary landfill standards. 通过对固化剂各组分进行不同搭配,还可满足修路或者作为绿化用建筑材料等不同的实际需求。 By the components with different curing agent, or may also be a different road to meet the actual needs of the green building material and the like. 此外,上述传统添加剂水泥、粉煤灰和氯化钙价廉易得,凹凸棒土在我国的储量也十分丰富,固化剂组分简单、制备成本低,具有良好的可推广性和实用性。 Further, the conventional additives cement, fly ash and calcium chloride is cheap and available, reserves of attapulgite is also very rich, the curing agent component simple preparation and low cost, has good promotion and practicality.

[0034] 实施例2 [0034] Example 2

[0035]本实施例中先按照水泥:粉煤灰:氯化钙= 1:0:0混合制得复合添加剂,然后按照印染污泥:凹凸棒土:复合添加剂= 0.433:0.133:0.433将各组分混合固化。 [0035] The first embodiment according to the present embodiment Cement: fly ash: calcium chloride = 1: 0: 0 complex is prepared by mixing the additives and sludge in accordance with dyeing: attapulgite: Complex Additive = 0.433: 0.133: 0.433 of each curing components were mixed. 按照上述配比在433g印染污泥中加入133g凹凸棒土和433g水泥,混合均匀。 According to the above, and the ratio of attapulgite was added 133g 433g 433g dyeing cement sludge, mix well. 室温下装入70.7mm X 70.7mmX 70.7mm模具内24h成型,脱模后养护28天固化块的无侧限抗压强度达到3.0MPa。 24h charged 70.7mm X 70.7mmX 70.7mm molded within the mold at room temperature, curing 28 days after demolding the cured block unconfined compressive strength 3.0MPa. 满足Patel所发表文南犬Evaluat1n of physical stability and leachability of PortlandPozzolona Cement(PPC)solidified chemical sludge generated from textilewastewater treatment plants ,Journal of Hazardous Materials 207: 56-64 中对土壤基、修路砖块的抗压强度要求。 56-64 in soil base, compressive strength brick road: Venant dog Evaluat1n of physical stability and leachability of PortlandPozzolona Cement (PPC) solidified chemical sludge generated from textilewastewater treatment plants, Journal of Hazardous Materials 207 meet Patel published Claim. XRD结果显示石英和方解石为主要成分,与图1类似。 XRD results show that calcite and quartz as a main component, similar to FIG. 采用硫酸硝酸法(HJ/T299-2007)对固化块做浸出毒性测试,其中浸出液中Cu和Pb的浓度为 Using nitric acid-sulfuric acid method (HJ / T299-2007) made of solidified block leaching toxicity test, wherein the concentration of the leaching solution for the Cu and Pb

0.2741mg/L和0.0775mg/L,COD的浓度为573.32mg/L,污染物得到进一步固化。 0.2741mg / L and a concentration of 0.0775mg / L, COD was 573.32mg / L, further contaminants cured.

[0036] 实施例3 [0036] Example 3

[0037]本实施例的一种凹凸棒土强化印染污泥处理处置用固化剂及其固化方法,基本同实施例1,其不同之处在于:本实施例中水泥:粉煤灰:氯化钙=6:0:0.18,印染污泥:凹凸棒土:复合添加剂= 0.1:0.05:0.3。 [0037] The present embodiment is one kind of reinforcing attapulgite dyeing sludge disposal, and a curing agent curing method, substantially as described in Example 1, except that: in the embodiment of the present embodiment Cement: fly ash: chloride Ca = 6: 0: 0.18, dyeing sludge: attapulgite: complex additive = 0.1: 0.05: 0.3.

[0038] 实施例4 [0038] Example 4

[0039]本实施例的一种凹凸棒土强化印染污泥处理处置用固化剂及其固化方法,基本同实施例1,其不同之处在于:本实施例先按照水泥:粉煤灰:氯化钙=4:1:0.16混合制得复合添加剂,然后按照印染污泥:凹凸棒土:复合添加剂= 0.24:0.11:0.7将各组分混合固化,室温下装入70.7mmX70.7mmX70.7mm模具内24h成型,脱模后养护12天得印染污泥固化体。 [0039] The present embodiment is one kind of reinforcing attapulgite dyeing sludge disposal, and a curing agent curing method, substantially the same Example 1, except that its: first embodiment according to the present embodiment Cement: fly ash: chloro calcium = 4: 1: 0.16 is prepared by mixing an additive compound, and then follow dyeing sludge: attapulgite: complex additive = 0.24: 0.11: 0.7 the components are mixed curing, the mold was charged at room temperature 70.7mmX70.7mmX70.7mm forming within 24h, 12 days after demolding curing printing sludge obtained cured body.

[0040]实施例1〜4所述的一种凹凸棒土强化印染污泥处理处置用固化剂及其固化方法,改善了印染厂出厂污泥的土工性能,提高了固化污泥的机械强度,降低了污染物的浸出能力,便于污泥的卫生填埋和资源化利用,且固化操作简单,组分价廉易得,固化强度可适应多种情况,污染物固定效果好,具有良好的可推广性和实用性。 [0040] A attapulgite according to Example 1 ~ 4 strengthening dyeing sludge disposal curing method and a curing agent, to improve the dyeing properties of geotechnical factory sludge, improves the mechanical strength of the cured sludge, reducing the ability of pollutants leaching, the sludge to facilitate sanitary landfill and resource utilization, and cured simple, readily available and inexpensive components, the curing strength may be adapted to various circumstances, good fixing effect of pollutants, has good promotion and practical.

[0041]以上示意性的对本发明及其实施方式进行了描述,该描述没有限制性,附图中所示的也只是本发明的实施方式之一,实际的结构并不局限于此。 [0041] The above exemplary embodiment of the present invention has been described with its embodiment, the description is not limiting, only one embodiment of the invention illustrated in the drawings, the actual configuration is not limited thereto. 所以,如果本领域的普通技术人员受其启示,在不脱离本发明创造宗旨的情况下,不经创造性的设计出与该技术方案相似的结构方式及实施例,均应属于本发明的保护范围。 So, if those of ordinary skill in the art by its inspiration, without departing from the purpose of the present inventions, the creative design without a similar manner to the aspect of the structure and embodiments shall fall within the scope of the present invention .

Claims (2)

1.一种凹凸棒土强化印染污泥处理处置用固化剂,其特征在于:包括复合添加剂和凹凸棒土,所述的复合添加剂包括水泥、粉煤灰和氯化钙,水泥、粉煤灰和氯化钙的质量比为2:5:0.06;所述的印染污泥、凹凸棒土和复合添加剂的质量比为1: 0.2:0.706;该配比下印染污泥固化体满足卫生填埋标准。 A printing attapulgite reinforced with sludge disposal curing agent comprising: a complex and attapulgite additive, the additive package comprises cement, fly ash and calcium chloride, cement, fly ash and the mass ratio of calcium chloride was 2: 5: 0.06; mass ratio of the sludge printing, attapulgite, and the additive compound is 1: 0.2: 0.706; sludge cured printing ratio satisfies this landfill standard.
2.—种权利要求1所述凹凸棒土强化印染污泥处理处置用固化剂的固化方法,其步骤为: (1)确定复合添加剂所含各组分的比例以及复合添加剂、凹凸棒土的添加比例,具体为复合添加剂中水泥、粉煤灰和氯化钙的质量比为2:5:0.06;印染污泥、凹凸棒土和复合添加剂的质量比为1:0.2:0.706; (2)将复合添加剂和凹凸棒土破碎研磨,过35目筛; (3)按步骤(I)确定比例,采用JJ-5水泥砂浆搅拌机,将印染污泥、凹凸棒土、复合添加剂混合搅勾,JJ-5水泥砂楽搅拌机的转速为:低速自转140 土5r/min,公转62 土5r/min ;高速自转285 ± 10r/min,公转125 ± 10r/min;搅拌强度为先低速搅拌10分钟,后高速搅拌5分钟; (4)将搅拌产物分层填装于模具内,一天后脱模,室温养护I天。 1 the printing sludge disposal attapulgite types reinforced 2.- claim curing agent curing method, comprising the steps of: (1) determining the ratio of the components and the additives contained in the complex compound additive, attapulgite addition ratio, particularly the mass ratio of the additive to cement, fly ash and calcium chloride was 2: 5: 0.06; dyeing sludge mass ratio, and the composite attapulgite additive is 1: 0.2: 0.706; (2) the compound additives and crushed milled attapulgite, through 35 mesh sieve; (3) according to step (I) the ratio determined using JJ-5 cement mortar mixer, the printing sludge, attapulgite, stirred hook composite additives, JJ -5 cement sand yue stirrer rotation speed: low speed rotation 140 soil 5r / min, revolution 62 soil 5r / min; high-speed rotation of 285 ± 10r / min, revolution 125 ± 10r / min; agitation intensity stirred first low speed for 10 minutes, High speed stirring for 5 min; (4) the layered product was stirred filled in a mold, the day after the release, I days curing at room temperature.
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