CN208995338U - A kind of processing system of oilfield drilling waste liquid - Google Patents

A kind of processing system of oilfield drilling waste liquid Download PDF

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Publication number
CN208995338U
CN208995338U CN201821558422.0U CN201821558422U CN208995338U CN 208995338 U CN208995338 U CN 208995338U CN 201821558422 U CN201821558422 U CN 201821558422U CN 208995338 U CN208995338 U CN 208995338U
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pond
tank
fenton
coagulative precipitation
level
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胡爽
贾春宇
喻科
吴骏
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Nanjing Bomao Environmental Protection & Technology Co Ltd
Chengdu Bomao Technology Co Ltd
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Nanjing Bomao Environmental Protection & Technology Co Ltd
Chengdu Bomao Technology Co Ltd
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Abstract

The utility model discloses a kind of processing systems of oilfield drilling waste liquid, mainly include drillng operation wastewater collection pond, broken glue tank, dehydration device, fracturing outlet liquid collecting pit, conditioning tank, iron-carbon micro-electrolysis pond, Fenton's reaction pond, except hard coagulative precipitation tank, biological mixed bed, second level Fenton pond, coagulative precipitation tank, medium filter, ultrafiltration system, multistage RO system, concentrated water collecting pit and produce water collecting pit, the broken glue tank is provided with mechanical stirring device except hard coagulative precipitation tank, coagulative precipitation tank;The conditioning tank is provided with diving mixer;The Fenton's reaction pond, second level Fenton pond are provided with air stirrer;The biology mixed bed is provided with microporous aeration device.The utility model has the technical effect that through the improvement to conventional oil gas field processing system, to realize the advantages that organic matter total removal rate is promoted, and membranous system is stable, and pharmaceutical use is reduced.

Description

A kind of processing system of oilfield drilling waste liquid
Technical field
The present invention relates to a kind of process field of sewage produced during exploitation of oil-gas field, in particular to a kind of oil gas fields The processing system of waste liquid of drilling.
Background technique
Waste liquid of drilling is mainly drillng operation waste water and fracturing outlet liquid, and wherein drillng operation waste water is mainly that well-flushing is useless Water, well site flushing waste water and equipment cleaning waste water etc., the various additives in major pollutants SS, petroleum-type and drilling fluid; Fracturing work after complete well can generate the fracturing outlet liquid containing a large amount of guanidine glue, petroleum-type and other various additives, and carry There are the landwaste to fall off on a small quantity from stratum and loose proppant, with complicated component, pollutant kind is more, content is high, glutinous The feature that degree is big, emulsification degree is high.Its pollutant is mainly organic matter, SS, petroleum-type, calcium ions and magnesium ions, salt content height.Wherein SS, petroleum-type, calcium ions and magnesium ions can preferably be removed by conventional materializing strategy technique, but the removal effect of organic matter is then At the difficult point of such sewage treatment, salt content can be removed by the film of back segment, and the stable operation of membranous system is also largely Ground is by the content for pre-processing laggard film organic matter of sewage.
There are following two disadvantages for traditional waste liquid of drilling processing method:
1, COD removal ability is weaker, pretreated still higher into film COD of sewage content, leads to back segment reverse osmosis membrane It is stifled to be easy dirt, operation stability is poor;
2, laggard film water quality inferiority is pre-processed, conventional coiled reverse osmosis membrane system is unable to operate stably, anti-with dish tubular type Infiltration membranous system carries out desalination in the processing of waste liquid of drilling back segment, and cost of investment is high, and operation stability is general.
Summary of the invention
A kind of place of oilfield drilling waste liquid is provided the purpose of the present invention is to solve above-mentioned the deficiencies in the prior art Reason system.
To achieve the goals above, one kind designed by the present invention efficiently removes the biology mixing of fracturing outlet liquid organic matter Bed system, a kind of processing system of oilfield drilling waste liquid mainly include drillng operation wastewater collection pond, broken glue tank, dehydration dress Set, fracturing outlet liquid collecting pit, conditioning tank, iron-carbon micro-electrolysis pond, Fenton's reaction pond, except hard coagulative precipitation tank, biological mixed bed, Second level Fenton pond, coagulative precipitation tank, medium filter, ultrafiltration system, multistage RO system, concentrated water collecting pit and production water collecting pit, The broken glue tank is provided with mechanical stirring device except hard coagulative precipitation tank, coagulative precipitation tank;The conditioning tank is provided with diving and stirs Mix machine;The Fenton's reaction pond, second level Fenton pond are provided with air stirrer;The biology mixed bed is provided with micro-pore aeration Device.
A kind of processing system for oilfield drilling waste liquid that the present invention obtains, technical effect have following two points:
1, second level Fenton operation medicament largely reduces after increasing biochemical mixing bed process, and biochemical system fits well-drilling waste water Answering property is stronger, and total COD removal rate increases;
2, after optimizing pretreating process, it is improved into film water matter, replaces dish tubular type with multistage coiled reverse osmosis membrane system Reverse osmosis membrane system, investment substantially reduce, and membranous system operation stability is more preferably.
Detailed description of the invention
Fig. 1 is the processing unit schematic diagram of oilfield drilling waste liquid under original technology
Fig. 2 is the schematic diagram of the processing unit of the oilfield drilling waste liquid of embodiment 1
In figure: drillng operation wastewater collection pond 1, broken glue tank 2, dehydration device 3, fracturing outlet liquid collecting pit 4, conditioning tank 5, Hard coagulative precipitation tank 8, biological mixed bed 9, second level Fenton pond 10, coagulative precipitation tank are removed in iron-carbon micro-electrolysis pond 6, Fenton's reaction pond 7 11, medium filter 12, ultrafiltration system 13, multistage RO system 14, concentrated water collecting pit 15, production water collecting pit 16, mechanical stirring dress Set 17, diving mixing device 18, air stirrer 19, microporous aeration device 20;
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1:
As shown in Fig. 2, a kind of processing system of oilfield drilling waste liquid provided by the invention, drillng operation wastewater collection pond 1, it breaks glue tank 2, dehydration device 3, fracturing outlet liquid collecting pit 4, conditioning tank 5, iron-carbon micro-electrolysis pond 6, Fenton's reaction pond 7, remove firmly It is coagulative precipitation tank 8, biological mixed bed 9, second level Fenton pond 10, coagulative precipitation tank 11, medium filter 12, ultrafiltration system 13, more Section RO system 14, produces water collecting pit 16, mechanical stirring device 17, diving mixing device 18, air stirring at concentrated water collecting pit 15 Device 19, microporous aeration device 20, the processing method for carrying out oilfield drilling waste liquid using above system are as described below:
A kind of processing system of oilfield drilling waste liquid, including the processing system using a kind of above-mentioned oilfield drilling waste liquid It unites to handle generated drillng operation waste water and fracturing outlet liquid during exploitation of oil-gas field, detailed process are as follows:
1, drillng operation waste water is collected in drillng operation wastewater collection pond 1, is sent by pumping to brokenly in glue tank 2, is passed through Gel breaker is uniformly mixed by the mechanical stirring device 17 in tank with waste water, and waste water after breaking gel is pumped in dehydration device 3 and carries out Dehydration, abjection water water inlet conditioning tank 5;
2, fracturing outlet liquid is collected in fracturing outlet liquid collecting pit 4, is sent by pumping in conditioning tank 5, with pretreatment Well-drilling waste water mixing afterwards, sequentially enters iron-carbon micro-electrolysis pond 6 and Fenton's reaction pond 7, will be difficult while removing large amount of organic The organic matter for being easy to biochemical degradation is converted in the organic matter of biochemical degradation;
3, water outlet enters except hard coagulative precipitation tank 8 is mixed medicament to go with sewage by the stirring of machine mixer 17 Hardness caused by a large amount of calcium ions and magnesium ions in water removal, and mud-water separation is carried out in sedimentation basin, water outlet enters biological mixed bed 9 It is interior, oxygen is provided for microorganism by microporous aeration device 20, makes to be degraded quickly in pond by the organic matter of biochemical degradation, It can not be adsorbed by Powdered Activated Carbon in the other pond of the organic moiety of biochemical degradation;
4, bio-chemical effluent enters in second level Fenton pond 10, further goes under the action of advanced oxidation difficult to degrade in water removal Organic matter, mixed liquor enter mud-water separation in coagulative precipitation tank 11;
5, suspended matter remaining in water removal is removed in water outlet by medium filter 12 after separating, and water outlet enters ultrafiltration system 13, Fine filtering further removes oil removal, and water outlet enters multistage rolling RO service system 14, sloughs 97% or more salinity in water, together When further go the multiple pollutants matter such as organic matter in water removal, so that water outlet be made to reach discharge standard.

Claims (3)

1. a kind of processing system of oilfield drilling waste liquid, including drillng operation wastewater collection pond (1), broken glue tank (2), dehydration dress Set (3), fracturing outlet liquid collecting pit (4), conditioning tank (5), iron-carbon micro-electrolysis pond (6), Fenton's reaction pond (7), except hard coagulation is heavy Shallow lake pond (8), biological mixed bed (9), second level Fenton pond (10), coagulative precipitation tank (11), medium filter (12), ultrafiltration system (13), multistage RO system (14), concentrated water collecting pit (15) Ji Chanshui collecting pit (16), it is characterised in that the broken glue tank (2) is removed Hard coagulative precipitation tank (8), coagulative precipitation tank (11) are provided with mechanical stirring device (17);The conditioning tank (5) is provided with diving Blender (18);The Fenton's reaction pond (7), second level Fenton pond (10) are provided with air stirrer (19);The biology is mixed It closes bed (9) and is provided with microporous aeration device (20).
2. a kind of processing system of oilfield drilling waste liquid according to claim 1, it is characterised in that anti-in two-stage Fenton It is increased between Ying Chi biological mixed bed (9), Powdered Activated Carbon has been added in biological mixed bed (9), specification is 200 mesh, dosage It is the 5% of pool capacity.
3. a kind of processing system of oilfield drilling waste liquid according to claim 1, it is characterised in that more medium filter Divide three-level, level-one is that filter medium is fibrous nodules, and second level is active carbon, and three-level is quartz sand;What multistage RO system (14) used Reverse osmosis membrane is rolled film, rather than dish tubular membrane.
CN201821558422.0U 2018-09-25 2018-09-25 A kind of processing system of oilfield drilling waste liquid Active CN208995338U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110981115A (en) * 2019-12-27 2020-04-10 江苏旭龙水务有限公司 Waste emulsion treatment device and waste emulsion treatment method thereof
CN111018288A (en) * 2019-12-10 2020-04-17 北京华盛坤泰环境科技股份有限公司 Centralized treatment method for waste drilling mud
CN111908722A (en) * 2020-08-15 2020-11-10 四川大学 Integrated toxic refractory wastewater treatment device and treatment method
CN112479484A (en) * 2020-11-03 2021-03-12 河南省正大环境科技咨询工程有限公司 Pharmaceutical adjuvant production wastewater treatment process
CN114956476A (en) * 2022-06-18 2022-08-30 重庆满翼环保科技有限公司 Gas field effluent disposal system
CN114988620A (en) * 2022-06-18 2022-09-02 重庆满翼环保科技有限公司 Gas field fracturing flow-back fluid treatment device and method
CN117023919A (en) * 2023-10-10 2023-11-10 成都晶睿企业管理咨询有限公司 Multistage treatment system and multistage treatment process for gas field produced water

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111018288A (en) * 2019-12-10 2020-04-17 北京华盛坤泰环境科技股份有限公司 Centralized treatment method for waste drilling mud
CN110981115A (en) * 2019-12-27 2020-04-10 江苏旭龙水务有限公司 Waste emulsion treatment device and waste emulsion treatment method thereof
CN111908722A (en) * 2020-08-15 2020-11-10 四川大学 Integrated toxic refractory wastewater treatment device and treatment method
CN112479484A (en) * 2020-11-03 2021-03-12 河南省正大环境科技咨询工程有限公司 Pharmaceutical adjuvant production wastewater treatment process
CN114956476A (en) * 2022-06-18 2022-08-30 重庆满翼环保科技有限公司 Gas field effluent disposal system
CN114988620A (en) * 2022-06-18 2022-09-02 重庆满翼环保科技有限公司 Gas field fracturing flow-back fluid treatment device and method
CN117023919A (en) * 2023-10-10 2023-11-10 成都晶睿企业管理咨询有限公司 Multistage treatment system and multistage treatment process for gas field produced water

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