CN103159340A - Inferior heavy oil sewage purification and biochemical degradation coupling device - Google Patents
Inferior heavy oil sewage purification and biochemical degradation coupling device Download PDFInfo
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- CN103159340A CN103159340A CN2011104188251A CN201110418825A CN103159340A CN 103159340 A CN103159340 A CN 103159340A CN 2011104188251 A CN2011104188251 A CN 2011104188251A CN 201110418825 A CN201110418825 A CN 201110418825A CN 103159340 A CN103159340 A CN 103159340A
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Abstract
The invention relates to a sewage purification and biochemical degradation coupling device. An ozone generation system is composed of an oxygenerator and an ozone generator; a high pressure dissolved gas-contact reaction system comprises a gas-liquid mixture pump and a dissolved gas-reactor; an air flotation system comprises an air flotation tank; the ozone generator is connected to the dissolved gas-reactor through the gas-liquid mixture pump; and the dissolved gas-reactor communicates with the air flotation tank through distributors at bottom of the air flotation tank. Effluent from a process plant has average CODcr of 2850mg / L, average petroleum content of 55mg / L, average SS content of 17mg / L, average ratio of BOD5 / CODcr above 0.21; and the device has improvement capacity on biochemical degradation performance of heavily polluted wastewater from inferior heavy oil processing higher than 30%.
Description
Technical field
The present invention relates to a kind of inferior heavy oil sewage purification and biochemical degradation coupling device.
Background technology
Along with oil supply in the world is tending towards heaviness, in poor quality, (poor quality) heavy oil upgrading amount cumulative year after year of Chinese refinery.Inferior heavy oil mainly comprises viscous crude, super viscous crude, Venezuela is overweight wet goods raw material has high API degree, high-sulfur nitrogen, high saliferous, high acid value, high viscosity, high-density, high impurity, the characteristics such as non-hydrocarbon compound is abundant.The device such as atmospheric and vacuum distillation, viscosity breaking, delayed coking can produce a large amount of hard-degrading high concentrated sewage of point source in processing inferior heavy oil process, has the pollutant load superelevation, the characteristics such as organic pollutant forms complicated, and difficult degradation polarity organic pollutant content is high, and biodegradability is poor.Therefore, compare with the slight pollution sewage that refinery's secondary processing device produces, it is classified as serious pollution sewage.Serious pollution sewage accounts for the 25%-30% of the whole sewage quantity in inferior heavy oil processing refinery, but pollutant load can account for whole 70%-80%.Wastewater treatment field is consisted of high pollution thing load impact, affect sewage processing efficiency up to standard, cause a series of hidden danger such as reuse water quality is defective, membrane module pollution.
Part is processed the inferior heavy oil Petrochemical Enterprises and is had realized that serious pollution sewage is on the whole impact up to standard of wastewater treatment field, beginning increases the pretreatment technology of serious pollution sewage in refinery's Sewage treatment systems, take petroleum-type, COD, SS as target contaminant, main purpose is to reduce high pollution thing load.Take the inferior heavy oil processing base of Largest In China-Liaohe River petro-chemical corporation is as example, its serious pollution sewage quality is complicated and changeable, through after " water quality regulation-oil removal sedimentation-breakdown of emulsion sedimentation-DAF air supporting " operational path pre-treatment, although petroleum-type (take dissolving oil as main) only is 80-100mg/L, suspended substance (SS) is about 200mg/L, but chemical oxygen demand (COD) (CODcr) is still up to 2000-2500mg/L, its organic pollutant forms macromole polar contaminants take poisonous or difficult degradation as main, biodegradability (BOD
5/ CODcr) relatively poor, the biochemical treatment unit that affects composite wastewater field, downstream plays a role.The serious pollution pre-treating process for sewage is not enough to the biodegradability regulating and controlling effect, is unfavorable for the comprehensive up to standard or advanced treatment and reclamation of inferior heavy oil processing sewage.Solution plan can only be serious pollution sewage to be carried out the regulation and control of biodegradability, ensures the steady in a long-term up to standard of downstream wastewater treatment field by the improvement to upstream water quality.
Summary of the invention
The purpose of this invention is to provide a kind of inferior heavy oil sewage purification and biochemical degradation coupling device, reduce the pollutant load of inferior heavy oil processing serious pollution sewage, improve simultaneously the biodegradability of serious pollution sewage, ensure that the downstream composite wastewater processes an efficient effect of biochemical treatment unit performance, newly " integrated wastewater discharge standard " (DB21/1627-2008) primary standard and Liaoning Province in (GB8978-1996) thereby promote to satisfy " national sewage comprehensive emission standard " by externally discharged waste water comprehensively.
A kind of inferior heavy oil sewage purification of the present invention and biochemical degradation coupling device are comprised of ozone generation system, high pressure solution gas-contact reacts system, three parts of air-flotation system;
Ozone generation system is made of oxygenerator and ozonizer, and high pressure solution gas-contact reacts system is made of gas fluid mixture pump and molten gas-reactor, and air-flotation system is made of air flotation pool; Ozonizer by gas fluid mixture pump be connected gas-reactor and connect, molten gas-reactor is communicated with air flotation pool by the sparger of air flotation pool bottom; Air flotation pool is an airtight casing, in air flotation pool, a side is provided with dividing plate, air flotation pool is divided into air supporting and clear water two spaces, have connected entrance with air supporting and two spaces connections of clear water at the lower partition, be provided with counter-flow vat in dividing plate top air supporting side, counter-flow vat is connected with the gas-liquid delivery pump inlet by pipeline, be divided into several spaces in space, dividing plate air supporting side middle and lower part by baffle plate, each space is communicated with molten gas-reactor by sparger, the air supporting side roof part is provided with Oil scraper, interior filling Activated Carbon with Cu catalyzer in molten gas-reactor.
(1) ozone generation system: consisted of by ozonizer oxygenerator supporting with it, ensure the needed ozone amount of inferior heavy oil processing serious pollution sewage biochemical property regulation and control;
(2) high pressure solution gas-contact reacts system: consisted of O by gas fluid mixture pump and molten gas-reactor
3Being saturated mode with inferior heavy oil processing serious pollution sewage under the gas-liquid delivery pumping action dissolves each other, enter high pressure solution gas-contact reacts system, under 0.3-0.6MPa, 70-80 ℃, ozone/catalyzer synergy, with the abundant contact reacts of polar contaminants in sewage, realization improves the sewage biochemical to degradeds poisonous, the macromole Persistent organic pollutants.
(3) air-flotation system: the inferior heavy oil processing serious pollution sewage (or fully mixing with flocculation agent) after catalytic ozonation enters air-flotation system, utilize residual ozone to continue the in-depth oxidizing reaction, utilize simultaneously the oxidation to harness emulsion effect of ozone, dissolving oil, SS are separated with water body, complete to decompose the separating of non-solubility pollutent and water body, residual ozone and discharge, water outlet enters the composite wastewater field.
The purification of water quality of inferior heavy oil processing serious pollution sewage and the characteristics of biodegradability regulation and control coupling device are:
(1) the employing air as the ozonizer source of the gas, coordinates oxygenerator to use, and can realize producing higher concentration ozone (also can consider air separation facility oxygen rich air collection use, further reduce power consumption) under without commodity oxygen consumption condition;
(2) filling Activated Carbon with Cu catalyzer in high pressure solution gas-contact reacts system;
(3) ozone is supersaturation attitude and reduced fuel oil processing serious pollution sewage and dissolves each other, average 15 microns of ozone bubbles diameter, and ozone and sewage contact area are large; After entering contact reacts system, keep elevated pressures and temperature (0.3-0.6MPa, 70-80 ℃), be beneficial to catalytic ozonation and react and carry out; More than molten gas-reaction times maintains 15min;
(4) " shallow pool theory " adopted in the design of air flotation pool, realizes effectively removing than the pollutent in short residence time(SRT); The foul smell gathering system is established in airtight design, and residual ozone can continue reaction with the organic exhaust gas that volatilizes, and tentatively realizes eliminating malodours from gases;
(5) in sewage biochemical degradation performance preferably under condition, can be directly with the molten gas of air, this moment, equipment was a DAF air floatation machine; Under the relatively poor condition of sewage biochemical degradation performance, after air supporting, water outlet can be back to " high pressure solution gas-contact reacts system " again, and further in-depth is processed.
The 0.5m that utilized Patent design of the present invention
3The purification of water quality of/hr inferior heavy oil processing serious pollution sewage and biochemical regulation and control coupling device model machine, and utilize the water outlet of Liaohe River petro-chemical corporation extremely-viscous crude sewage pretreatment unit to carry out the serious pollution sewage quality to purify with biochemical and regulate and control test in place research.
The operating parameter of the purification of water quality of inferior heavy oil processing serious pollution sewage and biochemical regulation and control coupling device model machine is as follows:
Water inlet 0.5m
3/ hr, dissolved-air pressure 0.45MPa, 75 ℃ of molten temperature degree, catalytic ozonation 20min duration of contact, catalyzer are Activated Carbon with Cu, the average 100mg/L sewage of ozone dosage, reflux ratio 25%.
The CODcr average out to 3960mg/L of process unit water inlet, petroleum-type average out to 86mg/L, SS average out to 21mg/L, BOD
5/ CODcr ratio is on average below 0.16.
The CODcr average out to 2850mg/L of process unit water outlet, petroleum-type average out to 55mg/L, SS average out to 17mg/L, BOD
5/ CODcr processes the improvement ability of serious pollution sewage biochemical degradation performance more than 30% than on average more than 0.21 to inferior heavy oil.
Description of drawings
The purification of water quality of Fig. 1 inferior heavy oil processing serious pollution sewage and biochemical regulation and control coupling device.
Wherein: 1 oxygenerator, 2 ozonizers, 3 gas fluid mixture pumps, 4 molten gas-reactors, 5 air flotation pools
Embodiment
The purification of water quality of inferior heavy oil processing serious pollution sewage and biodegradability regulate and control coupling device and are comprised of ozone generation system, high pressure solution gas-contact reacts system, three parts of air-flotation system;
Ozone generation system is made of oxygenerator 1 and ozonizer 2, and high pressure solution gas-contact reacts system is made of gas fluid mixture pump 3 and molten gas-reactor 4, and air-flotation system is made of air flotation pool; Ozonizer 2 passes through gas fluid mixture pump 3 and is connected 4 connections of gas-reactor, and molten gas-reactor 4 is communicated with air flotation pool by the sparger of air flotation pool bottom; Air flotation pool is an airtight casing, in air flotation pool, a side is provided with dividing plate, air flotation pool is divided into air supporting and clear water two spaces, have connected entrance with air supporting and two spaces connections of clear water at the lower partition, be provided with counter-flow vat in dividing plate top air supporting side, counter-flow vat is connected with gas fluid mixture pump 3 imports by pipeline, be divided into several spaces in space, dividing plate air supporting side middle and lower part by baffle plate, each space is communicated with molten gas-reactor 4 by sparger, the air supporting side roof part is provided with Oil scraper, interior filling Activated Carbon with Cu catalyzer in molten gas-reactor 4.
Claims (1)
1. an inferior heavy oil sewage purification and biochemical degradation coupling device are comprised of ozone generation system, high pressure solution gas-contact reacts system, three parts of air-flotation system; It is characterized in that:
Ozone generation system is made of oxygenerator and ozonizer, and high pressure solution gas-contact reacts system is made of gas fluid mixture pump and molten gas-reactor, and air-flotation system is made of air flotation pool; Ozonizer by gas fluid mixture pump be connected gas-reactor and connect, molten gas-reactor is communicated with air flotation pool by the sparger of air flotation pool bottom; Air flotation pool is an airtight casing, in air flotation pool, a side is provided with dividing plate, air flotation pool is divided into air supporting and clear water two spaces, have connected entrance with air supporting and two spaces connections of clear water at the lower partition, be provided with counter-flow vat in dividing plate top air supporting side, counter-flow vat is connected with the gas-liquid delivery pump inlet by pipeline, be divided into several spaces in space, dividing plate air supporting side middle and lower part by baffle plate, each space is communicated with molten gas-reactor by sparger, the air supporting side roof part is provided with Oil scraper, interior filling Activated Carbon with Cu catalyzer in molten gas-reactor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104188251A CN103159340A (en) | 2011-12-15 | 2011-12-15 | Inferior heavy oil sewage purification and biochemical degradation coupling device |
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| CN2011104188251A CN103159340A (en) | 2011-12-15 | 2011-12-15 | Inferior heavy oil sewage purification and biochemical degradation coupling device |
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| CN103159340A true CN103159340A (en) | 2013-06-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20160241A1 (en) * | 2016-02-12 | 2017-08-14 | Normex As | Method and apparatus for purification of water from aquaculture plants |
| CN116813155A (en) * | 2023-08-31 | 2023-09-29 | 金科环境股份有限公司 | System and method for treating silicon wafer cutting fluid wastewater and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003024991A (en) * | 2001-07-18 | 2003-01-28 | Hitachi Zosen Corp | Treatment system for wastewater containing formalin |
| CN101508474A (en) * | 2009-02-20 | 2009-08-19 | 山东省高密蓝天节能环保科技有限公司 | Ozone air-float purifier |
| CN101580294A (en) * | 2009-06-05 | 2009-11-18 | 江苏工业学院 | Method for processing landfill leachate through heterogeneous catalytic ozonation |
-
2011
- 2011-12-15 CN CN2011104188251A patent/CN103159340A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003024991A (en) * | 2001-07-18 | 2003-01-28 | Hitachi Zosen Corp | Treatment system for wastewater containing formalin |
| CN101508474A (en) * | 2009-02-20 | 2009-08-19 | 山东省高密蓝天节能环保科技有限公司 | Ozone air-float purifier |
| CN101580294A (en) * | 2009-06-05 | 2009-11-18 | 江苏工业学院 | Method for processing landfill leachate through heterogeneous catalytic ozonation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20160241A1 (en) * | 2016-02-12 | 2017-08-14 | Normex As | Method and apparatus for purification of water from aquaculture plants |
| WO2017138818A1 (en) * | 2016-02-12 | 2017-08-17 | Normex As | Method and apparatus for purification of water from aquaculture plants |
| CN116813155A (en) * | 2023-08-31 | 2023-09-29 | 金科环境股份有限公司 | System and method for treating silicon wafer cutting fluid wastewater and application |
| CN116813155B (en) * | 2023-08-31 | 2023-12-22 | 金科环境股份有限公司 | System and method for treating silicon wafer cutting fluid wastewater and application |
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Application publication date: 20130619 |