Method for culturing aerobic granular sludge for degrading chlorophenol by using 2,4-dichlorphenoxyacetic acid as substituted carbon source
A technology of aerobic granular sludge and dichlorophenoxyacetic acid, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve the problem of large consumption of easily degradable organic carbon sources, Poor handling capacity of aerobic particles, increased contact time and risks of operators with chlorophenols, etc., to achieve good environmental and economic benefits, reduce exposure risks, and save carbon sources
Inactive Publication Date: 2011-01-05
BEIJING NORMAL UNIVERSITY
View PDF4 Cites 8 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
On the one hand, these cultivation methods consume a large amount of easily degradable organic carbon sources. On the other hand, the long-term dosing of chlorophenols increases the contact time and risk of operators with chlorophenols.
In addition, the aerobic particles cultivated in this way often have poor treatment ability for wastewater containing various chlorophenols and wastewater with high concentration of chlorophenols
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] (1) Inoculation seed sludge: Settling the activated sludge from the sewage treatment plant or the aerobic granular sludge cultivated to a semi-mature or mature state with an easily degradable carbon source, discarding the supernatant, adding fresh inorganic salt culture medium, Air exposure for 1-3 hours, so that the organic matter adsorbed in the seed sludge is fully metabolized and settled again, and the concentrated sludge is added to the bioreactor, and the initial sludge inoculum amount is controlled to be 4-8g MLSS / L.
[0019] (2) Initial cultivation of aerobic granules: use 2,4-D and glucose as carbon sources to mix water, the concentration range of 2,4-D is 50-600mg / l, the concentration of glucose is 0-1000mg / l, and the water intake is adjusted during operation The concentration of 2,4-D increases gradually, the concentration of glucose decreases gradually, and the volume load of the system is controlled at 1.5-1.8kgCOD / m 3 d. According to C:N:P=100:5:1, add nut...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for culturing aerobic granular sludge for degrading chlorophenol by using 2,4-dichlorphenoxyacetic acid as a substituted carbon source. Active sludge or mature or semi-mature aerobic granular sludge is used as seed sludge, and 2,4-dichlorphenoxyacetic acid substituted chlorophenol is used as a carbon source substance for aerobic granule culture. The method comprises the following steps of: performing initial culture of the aerobic granular sludge by using 2,4-D and glucose as carbon sources, and performing further domestication of the aerobic granular sludge by using the 2,4-D as a main carbon source and using chlorophenol as an auxiliary carbon source so as to obtain the aerobic granular sludge with efficient degradability on the chlorophenol and stable structure. The method avoids great consumption of degradable carbon source in a common aerobic granule culture process, saves the carbon source, reduces the risks of contacting toxic and harmful substances, also can treat wastes by wastes, and has good environmental and economic benefits.
Description
[0001] The invention relates to an aerobic granular sludge cultivation method with chlorophenol degradation function, which belongs to the field of environmental protection and resource integration—water pollution prevention and control. Background technique [0002] Chlorinated phenolic compounds have inhibitory and toxic effects on many microorganisms, and are difficult to be decomposed by microorganisms in the environment, so they are a type of refractory organic matter. Along with the wide application of such substances in industries such as pesticides, medicines, papermaking, and preservatives, serious environmental problems have also arisen. At present, the treatment methods of chlorophenol wastewater mainly include physical adsorption, chemical oxidation, photodegradation and biological degradation. Biotechnology has attracted widespread attention for its low cost and simple operation. In order to improve the tolerance of microorganisms to chlorophenols, biofilm reacto...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 全向春杨志峰马景赟
Owner BEIJING NORMAL UNIVERSITY