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Anaerobic membrane biological treatment device and method for chlorophenol wastewater

An anaerobic membrane biology and treatment device technology, applied in the field of membrane bioreactors, can solve the problems of slow treatment rate, long cycle, low efficiency, etc., and achieve the effects of high space utilization, uniform water quality and high economic feasibility.

Pending Publication Date: 2019-06-07
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the unique biological stability and toxicity of chlorophenol compounds, the efficiency of biological treatment is low, the treatment rate is slow, and the cycle is long

Method used

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  • Anaerobic membrane biological treatment device and method for chlorophenol wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The main body is a cuboid structure with a height of 40cm, a length of 30cm, and a width of 28cm. The total volume is 33.6L, and the effective volume is 28L. The main body is 3-25cm high and has a card slot. Put the commercially available microfiltration membrane module into the In the card slot, the effective size of a single microfiltration membrane is 19.2cm in length and 17.5cm in width, and the total filtration area is 0.0672m 2 .

[0049] The relevant operation tests were carried out using the above-mentioned examples. In this implementation case, the hydraulic retention time was 12h, and when the influent COD (chemical oxygen demand, chemical oxygen demand) concentration was 512-603mg / L, the removal rate of COD 78.3%~99.9%, methane production is 0.16-0.27LCH 4 / g COD removed , when the concentration of chlorophenol is 3.7-4.7mg / L, the removal rate of p-chlorophenol is 40.3%-99.9%.

Embodiment 2

[0051] In this example, the water quality changes greatly, and the hydraulic retention time is 24h. When the influent COD concentration is 2133-2248mg / L, the COD removal rate is 71.8%-99.9%, and the biogas production is 0.21-0.29LCH 4 / g COD removed , when the concentration of chlorophenol was 7.4-9.9mg / L, the removal rate of p-chlorophenol was 72.1%-99.9%. The results prove that the anaerobic membrane bioreactor can be used to treat chlorophenol comprehensive wastewater with large fluctuations in water quality.

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Abstract

The invention belongs to the field of membrane bioreactor, in particular to an anaerobic membrane biological treatment device and a method for chlorophenol wastewater. The device comprises a main body, a water inlet and a water outlet are arranged on the main body, at least one membrane module and an aeration pipe are fixedly arranged in the main body, and a water outlet pipe connected with the water outlet is arranged in the membrane module; an air outlet is arranged on that top of the main body, an air inlet is arranged on the low part, a vacuum diaphragm pump is connected with the rear endof the air outlet, the vacuum diaphragm pump is connected with the air inlet, an aeration pipe is connected with the air inlet, and the device further comprises a water bath device for maintaining a constant temperature inside the main body. The present application promotes granular sludge formation by maintaining a relatively short hydraulic retention time through an anaerobic biofilm reactor. After a long time domestication of the intercepted sludge, good degradation effect of chlorophenol can be obtained.

Description

technical field [0001] The invention belongs to the field of membrane bioreactors, in particular to an anaerobic membrane biological treatment device and method for chlorophenol wastewater. Background technique [0002] With the rapid development of industry and agriculture, the use of chlorophenols as raw materials for production continues to increase, and the global annual output of chlorophenols has reached 39,000 tons. The π electrons in chlorophenol and the p electrons on the chlorine atom can form a stable conjugated system, showing high stability and thermal stability. In addition, the presence of chloride ions will greatly inhibit the biological activity of the benzene ring splitting enzyme, indirectly improve the anti-biodegradation ability of the benzene ring, and also increase the difficulty of degrading the above pollutants. Chlorophenols have varying degrees of toxic effects on animals, plants and microorganisms. Their toxicity is mainly due to the coagulation ...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F101/34C02F101/36
Inventor 李娜朱明超陈守文胡朝霞
Owner NANJING UNIV OF SCI & TECH
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