CN100341804C - 采油废水处理工艺 - Google Patents

采油废水处理工艺 Download PDF

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CN100341804C
CN100341804C CNB2004100757910A CN200410075791A CN100341804C CN 100341804 C CN100341804 C CN 100341804C CN B2004100757910 A CNB2004100757910 A CN B2004100757910A CN 200410075791 A CN200410075791 A CN 200410075791A CN 100341804 C CN100341804 C CN 100341804C
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oil
oil extraction
waste water
extraction wastewater
treatment process
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CN1800036A (zh
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吕诚
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Abstract

一种采油废水处理工艺，涉及油田采油废水处理技术。该处理工艺首先利用硅藻土对采油废水中的有机物进行吸附，进而采用无机盐或高分子絮凝剂进行絮凝沉淀，使采油废水中的污染物质得到最大程度的清除后，再利用无污泥膨胀的接触氧化法进行进一步氧化处理及介质吸附，从而使所处理水完全符合回注指标要求。采用上述工艺处理采油废水，利用了硅藻土较强的亲油性和超强的吸附性，超大的比表面积和易絮凝沉淀的特点，对采油废水中的有机物进行吸附，进而通过絮凝沉淀及进一步氧化处理，获得达标回注水。

Description

采油废水处理工艺
技术领域
本发明涉及一种油田采油废水处理技术。
背景技术
随着石油开采业的迅猛发展，采油废水对地上及地下的污染程度越来越严重，已经不同程度的威胁着人们的生活和生存环境；目前，在石油废水处理方面，一是采用絮凝沉淀法，既在石油开采废水中加入各种絮凝剂，使污染物絮凝沉淀，如在采油废水中加入氢氧化纳，经一级沉降再加入聚合铝，再经沉降、缓冲加压等完成废水处理；二是利用生物法进行净化处理；前者只有絮凝作用，而无吸附作用，不能有效的去除废水中的有害物质，处理效果不明显；单独采用生物法处理采油废水，由于采油废水温度高，水质波动性大，且含有许多对菌种有毒害作用的有机高分子物质，使菌种的适应性变差，另外各种采油助剂品种繁多，采油废水有机物成分复杂，含盐量高，难以通过生化处理达到预期目标。
发明内容
本发明的目的是提供一种新型采油废水处理工艺，解决现有技术无吸附作用，生化处理效果差的问题。
本发明解决其技术问题所采用的技术方案是：首先利用硅藻土对采油废水中的有机物进行吸附，进而采用无机盐或高分子絮凝剂进行絮凝沉淀，使采油废水中的污染物质得到最大程度的清除后，再利用无污泥膨胀的接触氧化法进行进一步氧化处理及介质吸附，获得达标回注水，其处理工艺如下：
采油废水—硅藻吸附—絮凝沉淀—接触氧化—介质吸附—介质吸附—回注水。
采用上述工艺处理采油废水的积极效果是：利用硅藻土较强的亲油性和超强的吸附性，超大的比表面积和易絮凝沉淀的特点，对采油废水中的有机物进行吸附，进而在无机盐或高分子絮凝剂的作用下，有效的进行絮凝沉淀，将废水中的污染物质最大程度的去除后，再利用无污泥膨胀的接触氧化法进一步氧化处理及介质吸附，获得达标回注水。
具体实施方式
按照以上所述的采油废水处理工艺，对采油废水实施处理通过以下工艺步骤完成：
1、硅藻吸附；采油废水每吨原水中加入0.2-0.5kg精制硅藻土，采用压缩空气搅拌法搅拌均匀后，送入吸附池，对废水中的污染物质进行吸附，吸附时间1-1.5小时。
2、絮凝沉淀；达到吸附要求后，加入无机高分子絮凝剂硫酸铝10-30g/L或有机高分子絮凝剂聚丙烯酰胺2-6g/L，搅拌均匀，在反应池中絮凝时间1.5-2小时。
3、接触氧化；将经絮凝沉淀的上部清液送入接触氧化装置，在汽水比1∶10-15的情况下，压缩空气搅拌，接触氧化5-6小时。
4、将接触氧化后的处理水送入介质吸附装置，经两次介质吸附后即可获得达标回注水。

Claims (1)

1、一种采油废水处理工艺，其特征是：首先利用硅藻土对采油废水中的有机物进行吸附，进而采用无机盐或高分子絮凝剂进行絮凝沉淀，使采油废水中的污染物质得到最大程度的清除后，再利用无污泥膨胀的接触氧化法进行进一步氧化处理及介质吸附后获得达标回注水，其处理工艺如下：
采油废水-硅藻吸附-絮凝沉淀-接触氧化-介质吸附-介质吸附-回注水。
CNB2004100757910A 2004-12-31 2004-12-31 采油废水处理工艺 Expired - Fee Related CN100341804C (zh)

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CN106630246A (zh) * 2015-11-02 2017-05-10 张家港格林台科环保设备有限公司 一种废乳化液的破乳处理方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08323350A (ja) * 1995-06-02 1996-12-10 Kurita Water Ind Ltd 含油排水の膜処理装置
US5637221A (en) * 1994-06-16 1997-06-10 Coyne; Thomas J. Wastewater treatment system and method
CN2410294Y (zh) * 2000-02-25 2000-12-13 刘红 微生物污水净化器
CN1405101A (zh) * 2001-08-09 2003-03-26 陈志刚 一种油田钻井废泥浆水的治理方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5637221A (en) * 1994-06-16 1997-06-10 Coyne; Thomas J. Wastewater treatment system and method
JPH08323350A (ja) * 1995-06-02 1996-12-10 Kurita Water Ind Ltd 含油排水の膜処理装置
CN2410294Y (zh) * 2000-02-25 2000-12-13 刘红 微生物污水净化器
CN1405101A (zh) * 2001-08-09 2003-03-26 陈志刚 一种油田钻井废泥浆水的治理方法

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