CN112791719A - 一种印染行业固废资源化利用方法 - Google Patents
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- 238000004043 dyeing Methods 0.000 title claims abstract description 36
- 238000007639 printing Methods 0.000 title claims abstract description 36
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- 238000000034 method Methods 0.000 title claims abstract description 18
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 32
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 10
- 229910052979 sodium sulfide Inorganic materials 0.000 claims abstract description 10
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000008394 flocculating agent Substances 0.000 claims abstract description 7
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- 238000006243 chemical reaction Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 8
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- 235000003891 ferrous sulphate Nutrition 0.000 claims description 5
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- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 5
- QFRFLEUHMQFCIL-UHFFFAOYSA-K aluminum;chloride;sulfate Chemical compound [Al+3].[Cl-].[O-]S([O-])(=O)=O QFRFLEUHMQFCIL-UHFFFAOYSA-K 0.000 claims description 4
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- WGLLSSPDPJPLOR-UHFFFAOYSA-N 2,3-dimethylbut-2-ene Chemical group CC(C)=C(C)C WGLLSSPDPJPLOR-UHFFFAOYSA-N 0.000 description 4
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- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000011949 solid catalyst Substances 0.000 description 2
- 229930192474 thiophene Natural products 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/16—Clays or other mineral silicates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
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- C02F11/00—Treatment of sludge; Devices therefor
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- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
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Abstract
本发明提出了一种印染行业固废资源化利用方法,通过向印染废水中加入絮凝剂、碱液、硫化钠和双氧水,得到印染污泥,将污泥与氧化铝粉末进行混合,然后烧结得到加氢催化剂,本发明提供了一种新的印染固废处理思路,更加安全环保,且能够实现废物利用,具有良好的应用前景。
Description
技术领域
本发明涉及环保技术领域,尤其涉及一种印染行业固废资源化利用方法。
背景技术
印染行业中,固废主要是污水经过絮凝沉淀后产生的污泥,印染行业产生的污泥中会存在大量的有机物和无机物,目前常规的处理办法主要包括填埋、焚烧和堆积,三种处理方法均存在不足,填埋会占用大量的土地资源,填埋物会对环境造成二次污染,焚烧虽然会大幅度降低固废的体积,但是焚烧的过程会消耗大量的能源,且焚烧产生的有害气体也是一种二次污染物,堆积与填埋的处理方式比较接近,虽然可以暂时降低不必要的成本投入也不会产生额外的二次污染,但是其占用场地,且堆积的过程中需要人员管理,否则也会造成周边环境的污染。
现有的处理技术缺乏可持续性,且无法实现对固废的资源化利用,容易造成能源的损耗或者资源的浪费。
发明内容
有鉴于此,本发明提出了一种能够对印染行业固废资源进行资源化利用的方法。
本发明的技术方案是这样实现的:本发明提供了一种印染行业固废资源化利用方法,包括如下步骤:
步骤一、向印染废水中加入絮凝剂,使应染废水中的有机物沉降,得到絮凝状态的印染废水;
步骤二、向步骤一所得絮凝状态的印染废水中加入碱液,调节pH值至8-10,调节完毕,加入硫化钠,升温至40-50℃进行反应,反应1-2h,得到预处理废水;
步骤三、向预处理废水中加入双氧水,升温至60-70℃进行反应,反应0.5-1h后过滤,得到处理污泥;
步骤四、向步骤三所得处理污泥中加入氧化铝粉末,混合均匀、制模后烧结,得到加氢催化剂。
在以上技术方案的基础上,优选的,步骤一中,所述絮凝剂为硫酸亚铁或聚合硫酸氯化铁铝,所述絮凝剂的投料量为印染废水的10-20(wt)%。
在以上技术方案的基础上,优选的,所述碱液为氢氧化钠水溶液或氢氧化钾水溶液。
在以上技术方案的基础上,优选的,所述硫化钠与絮凝剂的质量比为(0.5-1):1。
更进一步优选的,所述双氧水与絮凝剂的用量比为(4-10):1(v:m)。
在以上技术方案的基础上,优选的,所述双氧水为质量浓度为30%的双氧水溶液。
在以上技术方案的基础上,优选的,所述氧化铝粉末:处理污泥的质量比为(1-3):1。
在以上技术方案的基础上,优选的,所述步骤四还包括,干燥烧结后,对加氢催化剂进行吹扫,去除有机物燃烧后产生的灰分。
本发明的印染行业固废资源化利用方法相对于现有技术具有以下有益效果:
(1)本发明将印染行业产生的固废进行进一步加工处理,制备形成固态催化剂,用于加氢反应中,为印染行业的固废处理提供了一种新思路;
(2)制备得到的加氢催化剂具有良好的性能,具备一定的市场应用前景。
具体实施方式
下面将结合本发明实施方式,对本发明实施方式中的技术方案进行清楚、完整地描述,显然,所描述的实施方式仅仅是本发明一部分实施方式,而不是全部的实施方式。基于本发明中的实施方式,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式,都属于本发明保护的范围。
实施例1
向100kg印染废水中加入10kg的硫酸亚铁,搅拌絮凝沉淀,得到絮凝液,然后加入质量浓度为30%的氢氧化钠水溶液,调节絮凝液的pH值为8,调节完毕,加入5kg硫化钠,并升温至40℃,保温搅拌反应1h后得到预处理废水;再量取40L质量浓度30%的双氧水加入到预处理废水中,升温至60℃,保温搅拌反应30min后,过滤得到处理污泥,称取1kg污泥,加入1kg氧化铝粉末,搅拌混合均匀后放入模具内进行焙烧,焙烧温度为400℃,焙烧处理1h,得到加氢催化剂,吹扫其中产生的灰分,清洗干燥。
实施例2
向100kg印染废水中加入13kg的硫酸亚铁,搅拌絮凝沉淀,得到絮凝液,然后加入质量浓度为30%的氢氧化钾水溶液,调节絮凝液的pH值为9,调节完毕,加入7.8kg硫化钠,并升温至42℃,保温搅拌反应1.5h后得到预处理废水;再量取65L质量浓度30%的双氧水加入到预处理废水中,升温至63℃,保温搅拌反应40min后,过滤得到处理污泥,称取1kg污泥,加入2kg氧化铝粉末,搅拌混合均匀后放入模具内进行焙烧,焙烧温度为400℃,焙烧处理1h,得到加氢催化剂,吹扫其中产生的灰分,清洗干燥。
实施例3
向100kg印染废水中加入15kg的硫酸亚铁,搅拌絮凝沉淀,得到絮凝液,然后加入质量浓度为30%的氢氧化钾水溶液,调节絮凝液的pH值为10,调节完毕,加入10.5kg硫化钠,并升温至45℃,保温搅拌反应2h后得到预处理废水;再量取90L质量浓度30%的双氧水加入到预处理废水中,升温至65℃,保温搅拌反应50min后,过滤得到处理污泥,称取1kg污泥,加入3kg氧化铝粉末,搅拌混合均匀后放入模具内进行焙烧,焙烧温度为400℃,焙烧处理1h,得到加氢催化剂,吹扫其中产生的灰分,清洗干燥。
实施例4
向100kg印染废水中加入18kg的聚合硫酸氯化铁铝,搅拌絮凝沉淀,得到絮凝液,然后加入质量浓度为30%的氢氧化钾水溶液,调节絮凝液的pH值为9,调节完毕,加入14.4kg硫化钠,并升温至48℃,保温搅拌反应1.5h后得到预处理废水;再量取126L质量浓度30%的双氧水加入到预处理废水中,升温至68℃,保温搅拌反应1h后,过滤得到处理污泥,称取1kg污泥,加入2.5kg氧化铝粉末,搅拌混合均匀后放入模具内进行焙烧,焙烧温度为400℃,焙烧处理1h,得到加氢催化剂,吹扫其中产生的灰分,清洗干燥。
实施例5
向100kg印染废水中加入20kg的聚合硫酸氯化铁铝,搅拌絮凝沉淀,得到絮凝液,然后加入质量浓度为30%的氢氧化钾水溶液,调节絮凝液的pH值为8,调节完毕,加入20kg硫化钠,并升温至50℃,保温搅拌反应1h后得到预处理废水;再量取200L质量浓度30%的双氧水加入到预处理废水中,升温至70℃,保温搅拌反应1h后,过滤得到处理污泥,称取1kg污泥,加入1.5kg氧化铝粉末,搅拌混合均匀后放入模具内进行焙烧,焙烧温度为400℃,焙烧处理1h,得到加氢催化剂,吹扫其中产生的灰分,清洗干燥。
分别将实施例1-5制备得到的加氢催化剂用于加氢精制催化,在反应装置内填充实施例1-5制备得到的加氢催化剂,反应装置中的原料气为硫醇、噻吩和四甲基乙烯的混合气体,体积比为1:1:1,反应装置内的反应温度为250℃,对反应装置的进口和出口中气体的硫含量通过气相色谱进行分析,计算出硫醇、四甲基乙烯和噻吩的转化率,结果如下表所示:
以上数据可以看出,采用印染行业固废资源进行制备得到的加氢催化剂具有良好的加氢性能,为印染行业固废提供了一种全新环保的处理思路。
以上所述仅为本发明的较佳实施方式而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (8)
1.一种印染行业固废资源化利用方法,其特征在于,包括如下步骤:
步骤一、向印染废水中加入絮凝剂,使应染废水中的有机物沉降,得到絮凝状态的印染废水;
步骤二、向步骤一所得絮凝状态的印染废水中加入碱液,调节pH值至8-10,调节完毕,加入硫化钠,升温至40-50℃进行反应,反应1-2h,得到预处理废水;
步骤三、向预处理废水中加入双氧水,升温至60-70℃进行反应,反应0.5-1h后过滤,得到处理污泥;
步骤四、向步骤三所得处理污泥中加入氧化铝粉末,混合均匀、制模后烧结,得到加氢催化剂。
2.如权利要求1所述的印染行业固废资源化利用方法,其特征在于,步骤一中,所述絮凝剂为硫酸亚铁或聚合硫酸氯化铁铝,所述絮凝剂的投料量为印染废水的10-20(wt)%。
3.如权利要求1所述的印染行业固废资源化利用方法,其特征在于,所述碱液为氢氧化钠水溶液或氢氧化钾水溶液。
4.如权利要求1所述的印染行业固废资源化利用方法,其特征在于,所述硫化钠与絮凝剂的质量比为(0.5-1):1。
5.如权利要求1所述的印染行业固废资源化利用方法,其特征在于,所述双氧水与絮凝剂的用量比为(4-10):1(v:m)。
6.如权利要求1所述的印染行业固废资源化利用方法,其特征在于,所述双氧水为质量浓度为30%的双氧水溶液。
7.如权利要求1所述的印染行业固废资源化利用方法,其特征在于,所述氧化铝粉末:处理污泥的质量比为(1-3):1。
8.如权利要求1所述的印染行业固废资源化利用方法,其特征在于,所述步骤四还包括,干燥烧结后,对加氢催化剂进行吹扫,去除有机物燃烧后产生的灰分。
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