CN107344779A - 一种滑动弧放电低温等离子污水处理反应器 - Google Patents
一种滑动弧放电低温等离子污水处理反应器 Download PDFInfo
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Abstract
本发明属于水污染控制领域,公开了一种滑动弧放电低温等离子污水处理反应器,污水经初效过滤器后进入蓄水箱,污水经雾化后喷入电极间,利用高压滑动弧放电产生的超强活性粒子氧化、臭氧氧化、等离子体降解几种效应同时作用,瞬间将污水中有机物的分子键打断,小部分甚至直接转化为二氧化碳、水。同时由于电极距离水面距离保持一定,滑动弧放电产生的等离子体及超强活性粒子可以同时在水面作用,净化污水,从而降低污水中的有害物质,使污水得到净化。本装置可用于处理污水,如生物、医药、化工、电子、能源等行业产生的污水,使污水中的污染物降解为二氧化碳、水和无机盐。
Description
技术领域
本发明属于水污染控制领域,涉及一种处理污水的反应器,具体涉及一种滑动弧放电低温等离子污水处理反应器。
背景技术
污水,通常指受一定污染的、来自生活和生产的排出水。污水主要有生活污水、工业废水和初期雨水。污水的主要污染物有病原体污染物、耗氧污染物、植物营养物和有毒污染物等。根据污水来源的观点,污水可以定义为从住宅、机关、商业或者工业区排放的与地下水、地表水、暴风雪等混合的携带有废物的液体或者水。污水由许多类别,相应地减少污水对环境的影响也有许多技术和工艺。按照污水来源,污水可以分为这四类。第一类:工业废水 来自制造采矿和工业生产活动的污水,包括来自与工业或者商业储藏、加工的径流活渗沥液,以及其它不是生活污水的废水。第二类:生活污水 来自住宅、写字楼、机关或相类似的污水;卫生污水;下水道污水,包括下水道系统中生活污水中混合的工业废水。第三类:商业污水 来自商业设施而且某些成分超过生活污水的无毒、无害的污水如餐饮污水。洗衣房污水、动物饲养污水,发廊产生的污水等。第四类:表面径流 来自雨水、雪水、高速公路下水,来自城市和工业地区的水等等,表面径流没有渗进土壤,沿街道和陆地进入地下水。
水体污染的危害是多方面的,水体受有毒有害化学物质污染后,通过饮水或食物链便可能造成中毒。著名的水俣病、痛痛病是由水体污染引起的。某些有致癌作用的化学物质如砷、铬、镍、铍、苯胺、苯并(a)芘和其他多环芳烃、卤代烃污染水体后,可被悬浮物、底泥吸附,也可在水生生物体内积累,长期饮用含有这类物质的水,或食用体内蓄积有这类物质的生物(如鱼类)就可能诱发癌症。人畜粪便等生物污染物污染水体,可能引起细菌性肠道传染病如伤寒、痢疾、肠炎、霍乱等;肠道内常见病毒如脊髓灰质类病毒、柯萨奇病毒、传染性肝炎病毒等,皆可通过水体污染引起相应的传染病。水体污染后,常可引起水的感官性状恶化,如某些污染物在一定浓度下,对人的健康虽无直接危害,但可使水发生异臭、异色,呈现泡沫和油膜等,妨碍水体的正常利用,从而影响水中有机物的分解和生物氧化,使水体自净能力下降,影响水体的卫生状况。
低温等离子体作为一种新兴的高级氧化技术,包括·OH、臭氧、紫外光和超声波等活性物质,可有效降解难生化处理的污水,降解速率快,能有效地将污水中的有机物彻底降解为CO2, H2O和无机盐,无二次污染,工艺灵活。滑动弧放电是一种非平衡态气液放电,能够在大气压下产生大体积、高能量密度的低温等离子体。
发明内容
本发明的目标在于:研发一种滑动弧放电低温等离子污水处理反应器,可广泛用于生物、医药、化工、电子、能源等行业产生的污水。
本发明采用的技术方案是(见图1):
步骤一
污水经初效过滤器后经管道进入蓄水箱,当污水液面达到液位计高度时,液位计发出电信号,进口控制阀关闭,停止进水。循环泵启动,将污水泵入雾化器中,雾化成污水雾喷入电极间。
步骤二
接通高压电源,在电极间会发生滑动弧放电,形成等离子体同时产生高能电子。高能电子碰撞轰击雾化后污水中的水分子,使水分子发生激发裂解和电离,生成氧化性极强的自由基·OH、O3、H2O2 ,自由基·OH直接轰击并打断了污水中有机物的分子键,使污水中有机物的大分子变成小分子,从而实现污水的净化。同时由于电极距离水面距离短,电极在产生滑动弧放电后同时产生一定长度的拉弧,等离子体会直接作用于水面,同样生成氧化性极强的自由基·OH、O3、H2O2同时净化污水。
步骤三
进过步骤二的一个循环后,污水回到了蓄水箱中,污水中的有机物可能并没有被净化完全,根据进水的COD值设置循环次数,污水会再次被循环泵泵入雾化器经历步骤二的过程再次净化。
步骤四
净化完成后的污水会经过排水管直接排入下一级处理工艺。
本发明的优点:
本发明主要由以下优点:
1、滑动弧放电可以同时作用与雾化器喷出的污水和蓄水箱中的污水,且可以根据需要多个并行,提高了污水的处理效率;
2、等离子体产生的高浓度臭氧及紫外线可以杀灭细菌,对污水可以起到消毒作用
3、工艺结构简单,起停方便迅速,无需添加剂,也不会产生二次污染。
附图说明
图1一种滑动弧放电低温等离子污水处理反应器图
具体实施方式
一种滑动弧放电低温等离子污水处理反应器,具体实施方式如下:
步骤一
污水经初效过滤器后经管道进入蓄水箱,当污水液面达到液位计高度时,液位计发出电信号,进口控制阀关闭,停止进水。循环泵启动,将污水泵入雾化器中,雾化成污水雾喷入电极间。
步骤二
接通高压电源,在电极间会发生滑动弧放电,形成等离子体同时产生高能电子。高能电子碰撞轰击雾化后污水中的水分子,使水分子发生激发裂解和电离,生成氧化性极强的自由基·OH、O3、H2O2 ,自由基·OH直接轰击并打断了污水中有机物的分子键,使污水中有机物的大分子变成小分子,从而实现污水的净化。同时由于电极距离水面距离短,电极在产生滑动弧放电后同时产生一定长度的拉弧,等离子体会直接作用于水面,同样生成氧化性极强的自由基·OH、O3、H2O2同时净化污水。
步骤三
进过步骤二的一个循环后,污水回到了蓄水箱中,污水中的有机物可能并没有被净化完全,根据进水的COD值设置循环次数,污水会再次被循环泵泵入雾化器经历步骤二的过程再次净化。
步骤四
净化完成后的污水会经过排水管直接排入下一级处理工艺。
以上所述仅是本发明的优选实施方式,本发明的保护范围并不仅局限于上述实施例,凡属于本发明思路下的技术方案均属于本发明的保护范围。应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理前提下的若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (8)
1.一种滑动弧放电低温等离子污水处理反应器,其主体包括:雾化器(1)、高压电源(2)、绝缘支座(3)、电极固定座(4)、电极(5)、控制阀(6)、初效过滤器(7)、进水管(8)、液位计(9)、蓄水箱(10)、排水管(11)、循环泵(12)组成反应器。
2.根据权利要求1所述一种滑动弧放电低温等离子污水处理反应器,其特征在于蓄水箱(3)顶部设有电极固座(4),电极通过固定装置固定在蓄水箱上方。
3.根据权利要求1所述一种滑动弧放电低温等离子污水处理反应器,其特征在于蓄水箱(3)通过管道与循环泵(12)相连接,同时设有进水管和排水管。
4.根据权利要求1所述一种滑动弧放电低温等离子污水处理反应器,其特征在于循环泵(5)进口通过管道与蓄水箱(3)连接,出口通过管道与雾化器(1)连接。
5.根据权利要求1所述一种滑动弧放电低温等离子污水处理反应器,其特征在于高压电源(2)通过导线与电极(5)连接。
6.根据权利要求1所述一种滑动弧放电低温等离子污水处理反应器,其特征在于电极(5)和电极(5)之间距离为10-50mm;优选材质为石墨。
7.根据权利要求1所述一种滑动弧放电低温等离子污水处理反应器,其特征在于绝缘支座(3)的材质为聚四氟乙烯(PTFE)、陶瓷等。
8.根据权利要求1所述一种滑动弧放电低温等离子污水处理反应器,其特征在于液位计(9)为超声波液位计等。
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CN113101389A (zh) * | 2021-04-26 | 2021-07-13 | 北京农学院 | 一种等离子体杀菌装置、杀菌气体的制备方法及杀菌方法 |
CN115259308A (zh) * | 2022-08-09 | 2022-11-01 | 大连理工大学 | 雾化等离子体处理废水的装置及其方法 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113101389A (zh) * | 2021-04-26 | 2021-07-13 | 北京农学院 | 一种等离子体杀菌装置、杀菌气体的制备方法及杀菌方法 |
CN115259308A (zh) * | 2022-08-09 | 2022-11-01 | 大连理工大学 | 雾化等离子体处理废水的装置及其方法 |
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