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Hollow anaerobic membrane biological treatment system and petrochemical wastewater treatment method thereof

An anaerobic membrane biological and treatment system technology, applied in the hollow anaerobic membrane biological treatment system and its petrochemical wastewater treatment field, can solve the problems of excess sludge volume, difficult maintenance and management, low treatment rate, etc., and achieve enhanced biodegradability. , the effect of low operating cost and high processing efficiency

Pending Publication Date: 2020-04-28
EAST CHINA NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method of treating petrochemical wastewater has the disadvantages of high energy consumption, excess sludge, low treatment rate and long cycle time.
Anaerobic biological treatment technology includes upflow anaerobic sludge bed reactor, anaerobic fluidized bed and expanded granular sludge bed. These anaerobic reactors are easy to cause reactor blockage and anaerobic loss of sludge in the treatment of petrochemical wastewater. disadvantages such as difficulty in maintenance and management
Compared with aerobic biological treatment technology, anaerobic biological treatment has become a new round of research focus due to its advantages of less residual sludge, low energy consumption, high organic load and high production capacity. However, the anaerobic biological treatment of existing technologies Reactors have disadvantages such as reactor clogging, anaerobic loss of sludge and difficult maintenance and management in the treatment of petrochemical wastewater.

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  • Hollow anaerobic membrane biological treatment system and petrochemical wastewater treatment method thereof

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Experimental program
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Effect test

Embodiment 1

[0021] Add 1.5L of inoculated sludge with a VS of 8.70 into the bioreactor 12 with a volume of 2.5L, and mix eight kinds of petrochemical wastewater with PVA (0.0356), EO (0.0356), PTA (0.282), PET (0.0339), one-step method Acid-base wastewater (0.089), two-step acid-base wastewater (0.177), one-step nitrile-containing wastewater (0.07), two-step nitrile-containing wastewater (0.277) mixed petrochemical wastewater according to the volume ratio as influent, creeping in the influent Under the action of the pump 9, it enters the bioreactor 12, and under the action of the aeration device 8, the inoculated sludge is evenly mixed, and then the circulating water heating device 7 is started to produce anaerobic methane, and the anaerobic sludge and suspended matter are absorbed by the hollow fiber membrane The assembly 5 is retained in the bioreactor 12 , and the treated effluent flows out from the water outlet 15 of the bioreactor 12 . Adjust the pump speed of vacuum diaphragm pump 1...

Embodiment 2

[0023] Add 1.5L of inoculated sludge with a VS of 8.70 into the bioreactor 12 with a volume of 2.5L, and mix the four kinds of petrochemical wastewater with PVA (0.092), EO (0.092), PTA (0.728), PET (0.087) by volume ratio The mixed petrochemical wastewater is used as the influent, and the petrochemical wastewater enters the bioreactor 12 under the action of the influent peristaltic pump 9, and the inoculated sludge is evenly mixed under the action of the aeration device 8, and then the circulating water heating device 7 is started for anaerobic Methane is produced, and the treated effluent flows out from the water outlet 15 of the bioreactor 12 . Adjust the pump speed of vacuum diaphragm pump 11 to be 5 L / min to wash the surface of hollow fiber membrane module 5 to slow down the rate of membrane fouling; adjust the pump speed of water inlet peristaltic pump 9 and water outlet peristaltic pump 1, so that the The hydraulic retention time is controlled at 18 h, and the organic l...

Embodiment 3

[0025] Add 1.5L of inoculated sludge with a VS of 8.70 into the bioreactor 12 with a volume of 2.5L, and treat six kinds of petrochemical wastewater with PVA (0.054), EO (0.055), PTA (0.431), PET (0.052) one-step acid Alkali wastewater (0.136), two-step acid-base wastewater (0.271) mixed petrochemical wastewater according to the volume ratio is used as the influent, and the petrochemical wastewater enters the bioreactor 12 under the action of the influent peristaltic pump 9, and the role of the aeration device 8 The inoculated sludge is uniformly mixed, and then the circulating water heating device 7 is started for anaerobic methanation, and the treated effluent flows out from the water outlet 15 of the bioreactor 12. Adjust the pump speed of the vacuum diaphragm pump 11 to 5 L / min to flush the surface of the hollow fiber membrane module 5 to slow down the rate of membrane fouling. Adjust the pump speed of the water inlet peristaltic pump 9 and the water outlet peristaltic pum...

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Abstract

The invention discloses a hollow anaerobic membrane biological treatment system and a petrochemical wastewater treatment method thereof. The membrane biological treatment system is characterized in that a hollow anaerobic membrane bioreactor structure with a built-in aeration device is adopted, so that anaerobic biological treatment and a membrane separation technology are effectively combined, and the petrochemical wastewater is subjected to anaerobic treatment through hollow anaerobic membrane biological treatment. The system comprises the hollow anaerobic membrane bioreactor, the aeration device and a circulating water bath kettle device. The treatment method comprises the following steps: the petrochemical wastewater is mixed with inoculated sludge under the action of an aeration device, wherein the temperature of a reactor is 35-38 DEG C, and the hydraulic retention time is 18-48 hours. Compared with the prior art, the treatment system has the characteristics of simple structure,high treatment efficiency and low operation cost, anaerobic biological treatment and a membrane separation technology are effectively combined, high-activity microbial biomass can be reserved to the maximum extent by adding the hollow fiber membrane module, an optimal microbial community is formed, and the biodegradability is further enhanced.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, in particular to a hollow anaerobic membrane biological treatment system and a petrochemical waste water treatment method thereof. Background technique [0002] The petrochemical industry is a basic industry that plays a vital role in our country's national economy and provides support for other industries, such as agriculture, energy, transportation, etc. With the rapid development of my country's economy, the production scale and consumption of petroleum in my country continue to expand, and the petrochemical wastewater produced is complicated and diversified, and the difficulty of treatment also increases. A report from China's petrochemical industry shows that my country's petroleum wastewater discharge has increased to 4 billion tons. Petroleum wastewater is mainly produced in the process of refining, fractionating, cracking and synthesizing petroleum raw materials. The quality...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F103/36
CPCC02F3/2853C02F2103/365Y02E50/30
Inventor 陆雪琴郑朝婷甄广印王越谭宇杰李万江周昱晗
Owner EAST CHINA NORMAL UNIV