CN107792970A - 一种洗车废水深度处理及回用工艺 - Google Patents
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Abstract
本发明公开了一种洗车废水深度处理及回用工艺,包括如下步骤:S1.收集待处理废水,格栅除泥渣,斜板除油;S2.对除泥除油后废水进行pH调节;S3.对调节pH值后的废水进行微电解处理,并将上层废水输送至下游处理工艺;S4.对经过步骤S3处理的废水再进行pH调节,使废水中的悬浮物和漂浮物絮凝沉淀排放至污泥池;S5.抽取经过步骤S4处理的上清废水至旋流过滤器系统,进一步固液分离;S6.对经过旋转过滤器的废水依次进过微滤系统,活性炭吸附,超滤系统和纳滤系统等多级过滤系统,出水满足生活饮用水标准。本发明设计合理,实用性强,可实现自动化工作,操作简单,适于推广。
Description
技术领域
本发明属于废水处理技术领域,具体地说,涉及一种洗车废水深度处理及回用工艺。
背景技术
随着国民经济收入的快速增长,我国汽车保有量增长迅速。洗车用水量大,洗车废水中含有油类,有机物,洗涤剂等大量污染物质,如不经处理就直接排放,势必对水体造成污染。因此,对汽车服务业的洗车废水进行深度处理及回用,已成为当前迫切需要解决的问题。
中国发明专利CN105399230A公开了一种洗车废水循环循环系统,其缺点是缺乏前处理,多级膜,特别是反渗透膜极易受污染,运行维护成本必然高;中国专利CN103508588A公开了一种洗车废水处理设备,其缺点只是通过絮凝药剂和滤板的简单处理,其出水必然水质差,无法满洗车回用水的要求;中国专利CN102701516B公开了一种洗车水循环处理设备及自动控制系统,其缺点洗车废水水质负荷变动大,不利于厌氧生物处理,实用性差。
发明内容
本发明要解决的技术问题是克服上述缺陷,提供了一种洗车废水深度处理及回用工艺,设计合理,微电解系统能有效脱色,降解和杀菌,避免后级多级膜污染问题,旋转过滤系统能可进一步加快废水中悬浮物去除,不含RO的多级膜过滤系统,有力保障了出水水质好,处理水量大,且保障了水体不含异味,有利于洗车再生用水,改善了工作环境,同时,本处理工艺实用性强,可实现自动化工作,操作简单,适于推广。
为解决上述问题,本发明所采用的技术方案是:
一种洗车废水深度处理及回用工艺,其特征在于:包括如下步骤:
S1.收集待处理废水,格栅除泥渣,斜板除油;
S2.对除泥除油后废水进行pH调节;
S3.对调节pH值后的废水进行微电解处理,并将上层废水输送至下游处理工艺;
S4.对经过步骤S3处理的废水再进行pH调节,使废水中的悬浮物和漂浮物絮凝沉淀排放至污泥池;
S5.抽取经过步骤S4处理的上清废水至旋流过滤器系统,进一步固液分离;
S6.对经过旋转过滤器的废水依次进过微滤系统,活性炭吸附,超滤系统和纳滤系统等多级过滤系统,出水满足生活饮用水标准。
作为一种优化的技术方案,所述的S1具体包括:利用地下集水池收集待处理废水。
作为一种优化的技术方案,所述的S2具体包括:利用无机酸调节废水pH到3-5。
作为一种优化的技术方案,所述的S3具体包括:对调节pH值后的废水通过底部进入微电解塔,塔内底部布局爆气装置处理,塔中层填满铁碳填料,塔顶设置废水出口。
作为一种优化的技术方案,所述的S4具体包括:用无机碱对经过步骤S3处理的废水调节pH到8-10,使废水中的悬浮物和漂浮物絮凝沉淀排放至污泥池。
作为一种优化的技术方案,所述的S5具体包括:旋转过滤器精度50-150微米,具有自动清洗排污功能。
作为一种优化的技术方案,所述的S6具体包括:微滤系统精度在0.1-1微米之间;活性炭过滤可吸附脱色,去除合成洗涤剂;超滤系统精度在0.002-0.01微米;纳滤系统精度在0.001。
由于采用了上述技术方案,与现有技术相比,本发明设计合理,微电解系统能有效脱色,降解和杀菌,避免后级多级膜污染问题,旋转过滤系统能可进一步加快废水中悬浮物去除,不含RO的多级膜过滤系统,有力保障了出水水质好,处理水量大,且保障了水体不含异味,有利于洗车再生用水,改善了工作环境,同时,本处理工艺实用性强,可实现自动化工作,操作简单,适于推广。
具体实施方式
实施例:
一种洗车废水深度处理及回用工艺,包括如下步骤:
S1.通过洗车导流渠,收集待处理废水到地下井,导流渠上方设置了格栅,地下井入口设置了粗细海绵,井内设置了除油斜板和导流隔板。
S2.对除泥除油后废水由上方溢入调节池,通过电极监控,自动滴加无机酸调节废水pH到4。
S3.对调节pH值后的废水由底部进入微电解塔,进行微电解处理,并将上层废水输送至下游处理工艺。
S4.对经过步骤S3处理的废水再用氢氧化钠调节pH到9,使废水中的悬浮物和漂浮物絮凝沉淀排放至污泥池。
S5.抽取经过步骤S4处理的上清废水至旋流过滤器系统,进一步固液分离。
S6.对经过旋转过滤器的废水依次进过微滤系统,活性炭吸附,超滤系统和纳滤系统等多级过滤系统,出水满足生活饮用水标准。
具体的,微电解塔内底部布局爆气装置处理,塔中层填满铁碳填料,塔顶设置废水出口。旋转过滤器精度50-150微米,具有自动清洗排污功能。微滤系统精度在0.1-1微米之间;活性炭过滤可吸附脱色,去除合成洗涤剂;超滤系统精度在0.002-0.01微米;纳滤系统精度在0.001。整个多级过滤系统中设置了反冲洗回路;并且超滤和纳滤之间设置增压泵;纳滤出水设置了紫外消毒装置。
本发明的工艺主要特点为1)微电解系统能有效脱色,降解和杀菌,避免后级多级膜污染问题;2)旋转过滤系统能可进一步加快废水中悬浮物去除;3)不含RO的多级膜过滤系统,有力保障了出水水质好,处理水量大,且保障了水体不含异味,有利于洗车再生用水,改善了工作环境;4)本处理工艺实用性强,可实现自动化工作,操作简单。适用于各类废水深度处理和回用,特别是洗车的污水处理,同时在高浓度“黑臭河”方面也巨大应用潜力。
本发明不局限于上述的优选实施方式,任何人应该得知在本发明的启示下做出的结构变化,凡是与本发明具有相同或者相近似的技术方案,均属于本发明的保护范围。
Claims (7)
1.一种洗车废水深度处理及回用工艺,其特征在于:包括如下步骤:
S1.收集待处理废水,格栅除泥渣,斜板除油;
S2.对除泥除油后废水进行pH调节;
S3.对调节pH值后的废水进行微电解处理,并将上层废水输送至下游处理工艺;
S4.对经过步骤S3处理的废水再进行pH调节,使废水中的悬浮物和漂浮物絮凝沉淀排放至污泥池;
S5.抽取经过步骤S4处理的上清废水至旋流过滤器系统,进一步固液分离;
S6.对经过旋转过滤器的废水依次进过微滤系统,活性炭吸附,超滤系统和纳滤系统等多级过滤系统,出水满足生活饮用水标准。
2.根据权利要求1所述的洗车废水深度处理及回用工艺,其特征在于:所述的S1具体包括:利用地下集水池收集待处理废水。
3.根据权利要求1所述的洗车废水深度处理及回用工艺,其特征在于:所述的S2具体包括:利用无机酸调节废水pH到3-5。
4.根据权利要求1所述的洗车废水深度处理及回用工艺,其特征在于:所述的S3具体包括:对调节pH值后的废水通过底部进入微电解塔,塔内底部布局爆气装置处理,塔中层填满铁碳填料,塔顶设置废水出口。
5.根据权利要求1所述的洗车废水深度处理及回用工艺,其特征在于:所述的S4具体包括:用无机碱对经过步骤S3处理的废水调节pH到8-10,使废水中的悬浮物和漂浮物絮凝沉淀排放至污泥池。
6.根据权利要求1所述的洗车废水深度处理及回用工艺,其特征在于:所述的S5具体包括:旋转过滤器精度50-150微米,具有自动清洗排污功能。
7.根据权利要求1所述的洗车废水深度处理及回用工艺,其特征在于:所述的S6具体包括:微滤系统精度在0.1-1微米之间;活性炭过滤可吸附脱色,去除合成洗涤剂;超滤系统精度在0.002-0.01微米;纳滤系统精度在0.001。
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Cited By (4)
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CN108941107A (zh) * | 2018-08-03 | 2018-12-07 | 山东天力能源股份有限公司 | 一种油罐车清洗处理系统及工艺 |
CN109574157A (zh) * | 2018-11-21 | 2019-04-05 | 南京清科中晟环境技术有限公司 | 一种环境友好型天然矿物水体净化材料 |
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CN108941107A (zh) * | 2018-08-03 | 2018-12-07 | 山东天力能源股份有限公司 | 一种油罐车清洗处理系统及工艺 |
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CN114314882B (zh) * | 2021-12-15 | 2023-12-19 | 武汉工程大学 | 一种富集和吸附一体化的卧式或立式原位净水器 |
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