CN114195239A - 一种脱硫废水复合处理剂 - Google Patents
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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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
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Abstract
本发明公开了一种脱硫废水复合处理剂,其呈灰白色固体粉末状,各组份重量份比为:重质碳酸钙25‑35份,硫酸钙20‑30份,膨润土5‑15份,活性炭23‑32份,聚合氯化铝铁3‑8份,阳离子聚丙烯酰胺1‑2份,将各组份粉末混合均匀,利用干粉投料机直接以粉剂的形式加入脱硫废水处理工艺过程的混凝反应池内。具有显著脱色、脱臭、脱水、脱油、除菌、脱除水中重金属离子、放射性物质及致癌物等多种物质的功效,有极强去除COD、BOD的能力,具绿色环保,不会对环境造成二次污染,尤其在火电厂脱硫废水处理中具有良好的应用效果。
Description
技术领域
本发明涉及一种水处理技术,具体地说,涉及一种结合脱硫废水的水量、水质特点,通过絮凝、吸附作用去除脱硫废水中大部分悬浮物颗粒和重金属、氨氮等有害物质,作为废水前端预处理的脱硫废水复合处理剂。
背景技术
随着科技发展,工业和生活用水量日趋增加,而水资源却是有限的,所以污水的回收利用在一定程度上可以缓解用水压力。在污水处理领域中,除了传统的物理法,包括吸附法,气浮分离法,电磁效应法等,还有物理化学法以及化学氧化法等。其中物理化学法、化学氧化法中非常重要的步骤就是絮凝、吸附步骤,而使用物理化学法、化学氧化法处理的废水大都是由制药厂、造纸厂、化工厂、污水处理厂、垃圾填埋厂、垃圾焚烧发电厂、堆肥厂、污泥厂、皮革厂、橡胶厂等排出的脱硫废水,由于脱硫废水中含有高浓度的悬浮物、硫酸盐、亚硫酸盐、重金属、放射性物质、COD及BOD等等,具有盐分含量高、重金属含量高、腐蚀性强、硬度大等特点,存在处理强度大、处理成本高、效果差等问题。
现有脱硫废水的絮凝、吸附步骤都是将脱硫废水输入PH调节池,先进行PH值调整,再输入气浮装置,通过与气浮装置连通的加药装置分别加入絮凝剂(聚合氯铝PAC)、助凝剂(聚丙烯酰胺PAM),利用絮凝剂较高的电荷和分子量,遇水后迅速产生混凝效果,再利用助凝剂吸附污水中的悬浮粒子,使用高分链互缠交联,形成架桥,使用絮凝结构增大变粗,达到絮凝、吸附的效果。
现有絮凝剂(聚合氯铝PAC)和助凝剂(聚丙烯酰胺PAM)需分开加入,存在以下问题:
1)加药装置复杂,运营费用高,设备管理维护任务重;
2)用于脱硫废水处理的药剂种类多,储量大,加药工作量大,有一定的安全隐患;
3)纯絮凝剂(聚合氯铝PAC)和纯助凝剂(聚丙烯酰胺PAM)的使用,很难控制其用量,成本过高。
发明内容
本发明的目的在于提供一种脱硫废水复合处理剂,依据脱硫废水处置的水量、水质特点,通过絮凝、吸附作用,将脱硫废水中的污染物快速沉降,固定絮凝物中有害物质,且污泥易于脱水。
本发明中脱硫废水复合处理剂呈灰白色固体粉末状,各组份重量份比为:重质碳酸钙25-35份,硫酸钙20-30份,膨润土5-15份,活性炭23-32份,聚合氯化铝铁3-8份,阳离子聚丙烯酰胺1-2份,将各组份粉末混合均匀,利用干粉投料机直接以粉剂的形式加入脱硫废水处理工艺过程的混凝反应池内。
优选地,各组份重量份比为重质碳酸钙30份,硫酸钙25份,膨润土10份,活性炭28.5份,聚合氯化铝铁5份,阳离子聚丙烯酰胺1.5份。
优选地,各组份重量份比为重质碳酸钙25份,硫酸钙30份,膨润土5份,活性炭30份,聚合氯化铝铁8份,阳离子聚丙烯酰胺2份。
优选地,各组份重量份比为重质碳酸钙35份,硫酸钙23份,膨润土13份,活性炭25份,聚合氯化铝铁3份,阳离子聚丙烯酰胺1份。
本发明中的脱硫废水复合处理剂具有显著脱色、脱臭、脱水、脱油、除菌、脱除水中重金属离子、放射性物质及致癌物等多种物质的功效,有极强去除COD、BOD的能力,具绿色环保,不会对环境造成二次污染,尤其在火电厂脱硫废水处理中具有良好的应用效果。
具体实施方式
实施例1
一种脱硫废水复合处理剂,呈灰白色固体粉末状,各组份重量份比为:重质碳酸钙30份,硫酸钙25份,膨润土10份,活性炭28.5份,聚合氯化铝铁5份,阳离子聚丙烯酰胺1.5份,在常温常压状态下,按照上述各组份重量份数比分别称取重质碳酸钙,硫酸钙,膨润土,活性炭,聚合氯化铝铁,阳离子聚丙烯酰胺的粉末,再将各组份的粉末混合均匀即可。使用时利用干粉投料机直接以粉剂的形式加入脱硫废水处理工艺过程中混凝反应池内,药剂用量根据水质不同控制在100-400ppm,具有吸附沉降速度快、络合的有害物质稳定性强、污泥易于脱水等优点。
将本实施例中的脱硫废水复合处理剂按300ppm应用到某电厂黄色浆液脱硫废水中,脱硫效率稳定及超过96%,系统运动正常。
实施例2
本实施例中脱硫废水复合处理剂各组份重量份比为:重质碳酸钙25份,硫酸钙30份,膨润土5份,活性炭30份,聚合氯化铝铁8份,阳离子聚丙烯酰胺2份,在常温常压状态下,按照上述各组份重量份数比分别称取重质碳酸钙,硫酸钙,膨润土,活性炭,聚合氯化铝铁,阳离子聚丙烯酰胺的粉末,再将各组份的粉末混合均匀即可。
将本实施例中的脱硫废水复合处理剂按200ppm应用到某电厂灰色浆液脱硫废水中,脱硫效率稳定及超过95%,系统运动正常。
实施例3
本实施例中,脱硫废水复合处理剂各组份重量份比为:重质碳酸钙35份,硫酸钙23份,膨润土13份,活性炭25份,聚合氯化铝铁3份,阳离子聚丙烯酰胺1份,在常温常压状态下,按照上述各组份重量份数比分别称取重质碳酸钙,硫酸钙,膨润土,活性炭,聚合氯化铝铁,阳离子聚丙烯酰胺的粉末,再将各组份的粉末混合均匀即可。将本实施例中的脱硫废水复合处理剂按100ppm应用到某电厂灰色浆液脱硫废水中,脱硫效率稳定及超过93%,系统运动正常。
实施例4
本实施例中,脱硫废水复合处理剂各组份重量份比为:重质碳酸钙31份,硫酸钙20份,膨润土15份,活性炭27份,聚合氯化铝铁6份,阳离子聚丙烯酰胺1份,在常温常压状态下,按照上述各组份重量份数比分别称取重质碳酸钙,硫酸钙,膨润土,活性炭,聚合氯化铝铁,阳离子聚丙烯酰胺的粉末,再将各组份的粉末混合均匀即可。
实施例5
本实施例中,脱硫废水复合处理剂各组份重量份比为:重质碳酸钙33份,硫酸钙29份,膨润土6份,活性炭25份,聚合氯化铝铁4份,阳离子聚丙烯酰胺3份,在常温常压状态下,按照上述各组份重量份数比分别称取重质碳酸钙,硫酸钙,膨润土,活性炭,聚合氯化铝铁,阳离子聚丙烯酰胺的粉末,再将各组份的粉末混合均匀即可。
实施例6
本实施例中,脱硫废水复合处理剂各组份重量份比为:重质碳酸钙27份,硫酸钙30份,膨润土8份,活性炭29份,聚合氯化铝铁3.5份,阳离子聚丙烯酰胺1.5份,二氯异氰尿酸钠1份,在常温常压状态下,按照上述各组份重量份数比分别称取重质碳酸钙,硫酸钙,膨润土,活性炭,聚合氯化铝铁,阳离子聚丙烯酰胺,二氯异氰尿酸钠的粉末,再将各组份的粉末混合均匀即可。
实施例7
实施例中,脱硫废水复合处理剂各组份重量份比为:重质碳酸钙27份,硫酸钙28份,膨润土8份,活性炭29份,聚合氯化铝铁3.5份,阳离子聚丙烯酰胺1.5份,二氯异氰尿酸钠1份,复合型植物提取除臭剂2份,在常温常压状态下,按照上述各组份重量份数比分别称取重质碳酸钙,硫酸钙,膨润土,活性炭,聚合氯化铝铁,阳离子聚丙烯酰胺,二氯异氰尿酸钠,复合型植物提取除臭剂的粉末,再将各组份的粉末混合均匀即可。将本实施例中的脱硫废水复合处理剂按300ppm应用到某电厂灰色浆液脱硫废水中,脱硫效率稳定及超过97%,系统运动正常。并且在处理过程中也可以有效去除臭味,改善处理环境。
其中复合型植物提取液除臭剂是从松科、豆科、石楠科、杉科、桑科、蔷薇科、姜科、芸香科、伞形科及茶叶科属植物中提取的300多种植物提取液,通过微乳化技术、纳米技术、高活化技术进行科学配比复配而成,可以有效除去恶臭。
将上述实施例1-7中的硫废水复合处理剂分别按200ppm加入到某石化公司灰色浆液脱硫废水中,灰色浆液脱硫废水中悬浮物含量为80mg/L,BOD为25mg/L,CODcr为90mg/L,全盐量为702mg/L,DO为9mg/L,氰化物为0.01mg/L,砷含量为0.05mg/L,分别处理后水中含量如下表1所示。同时将仅使用聚合氯铝(PAC)的例8、仅使用聚丙烯酰胺(PAM)的例9,以及聚合氯铝(PAC)和聚丙烯酰胺(PAM)同时加入的例10也分别按200ppm加入到某石化公司的上述灰色浆液脱硫废水中,处理结果如下表1所示。
表1
综上所述,使用本发明中的脱硫废水复合处理剂后,在搅拌状态下废水中的大粒子随着时间推移而会沉淀,同时10微米以下的带有负电荷的污染粒子通过混合了产生正电荷、吸附污染物、促进沉淀等多种天然矿物的活化粉体,进入漂浮在污水中的污染粒子之间,使它们迅速架桥、吸附、沉淀,从而分离成清水和污泥。本发明中的脱硫废水复合处理剂结合了有机和无机絮凝剂的优点,打破了污水处理的常规,解除了现在使用的絮凝剂和污水处理剂对环境可能存在的隐患。通过对污水的超速处理,使处理设备大大简化,土地占用面积大幅减少,并且将污水处理运营成本降低到目前国内外的最低水平。
Claims (4)
1.一种脱硫废水复合处理剂,呈灰白色固体粉末状,各组份重量份比为:重质碳酸钙25-35份,硫酸钙20-30份,膨润土5-15份,活性炭23-32份,聚合氯化铝铁3-8份,阳离子聚丙烯酰胺1-2份,将各组份粉末混合均匀,利用干粉投料机直接以粉剂的形式加入脱硫废水处理工艺过程的混凝反应池内。
2.根据权利要求1所述的脱硫废水复合处理剂,其特征在于,重质碳酸钙30份,硫酸钙25份,膨润土10份,活性炭28.5份,聚合氯化铝铁5份,阳离子聚丙烯酰胺1.5份。
3.根据权利要求1所述的脱硫废水复合处理剂,其特征在于,重质碳酸钙25份,硫酸钙30份,膨润土5份,活性炭30份,聚合氯化铝铁8份,阳离子聚丙烯酰胺2份。
4.根据权利要求1所述的脱硫废水复合处理剂,其特征在于,重质碳酸钙35份,硫酸钙23份,膨润土13份,活性炭25份,聚合氯化铝铁3份,阳离子聚丙烯酰胺1份。
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