Handling method for refractory waste water

A treatment method and refractory technology, which is applied in the field of using acoustic-magnetic coupling to strengthen microorganisms to treat refractory wastewater, can solve the problems of clogging reactor aeration system and pipeline, unsuitable technology promotion and application, and poor sludge settling performance. Achieve the effects of shortening the start-up time, preventing sludge bulking, and improving settling performance

Inactive Publication Date: 2009-09-09
CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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Problems solved by technology

However, the above methods still have the following deficiencies. The use of ultrasonic waves alone to strengthen the activated sludge will affect the formation of sludge flocs, and the sludge settling performance will deteriorate; The magnetic field is not suitable for the popularization and application of the technology. If the magnetic powder is added alone, the phenomenon of magnetic sludge coagulation will appear in the treatment system, and the reactor aeration system and pipeline will be blocked.
In addition, in the field of physical energy field coupling treatment of refractory wastewater treatment, domestic and foreign researchers have carried out research from the aspects of acoustic-optical coupling, optical-electrical coupling, magnetic-electrical coupling, acoustic-electrical coupling, optical-magnetic coupling, etc., but The above treatment method is that the physical energy field directly acts on the wastewater without the participation of microorganisms, and its energy consumption is high, resulting in high treatment costs.

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  • Handling method for refractory waste water
  • Handling method for refractory waste water
  • Handling method for refractory waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Aerobic biological treatment of refractory substances in oil refinery wastewater

[0024] Refinery wastewater mainly contains pollutants such as alkanes, aromatic hydrocarbons, volatile phenols and ammonia nitrogen, among which long-chain alkanes and diethyl phthalate, benzenesulfonate, 2,4-dichlorotoluene, p-nitrobenzene Aromatics such as formic acid and halogenated aromatics are refractory substances, and whether they are treated thoroughly will directly affect whether the effluent can meet the standard.

[0025] use figure 1 The shown wastewater biological aerobic treatment reactor, adding 100L COD is 800 ~ 1300mg / L oil refinery wastewater, the reactor adopts the sequence batch operation mode, according to the patent "a microbial agent for oil refinery wastewater treatment, its preparation method and its application "(Patent Publication No.: CN1789406) To prepare the microbial agent, add the liquid microbial agent according to 2% of the effective volume o...

Embodiment 2

[0029] Example 2: Anaerobic treatment of refractory substances in pharmaceutical wastewater

[0030] Pharmaceutical wastewater has the characteristics of high organic matter concentration, high SS concentration, and high sulfate concentration. At the same time, there are difficult biodegradation and toxic substances such as antibacterial, antibacterial, and antibiotics. active. Using acoustic-magnetic coupling physical energy field to strengthen microorganisms for degradation can improve COD removal rate and impact load resistance performance.

[0031] use figure 2The anaerobic reactor shown is inoculated with anaerobic sludge, and magnetic powder is added at a dosage of 90 mg / L. The magnetic powder is made of oxidized magnets, and the particle size of the magnetic powder is 0.1-15 μm. The magnetic field strength on the surface of the reactor is controlled at 5-15 mT. The device is directly installed at the bottom of the reactor, the ultrasonic frequency is 30KHz, and the u...

Embodiment 3

[0034] Example 3: Aerobic treatment of refractory substances in printing and dyeing wastewater

[0035] The complex organic compounds containing azo bonds and polyaromatic rings in printing and dyeing wastewater, most of the dyes are toxic and refractory organic compounds, with strong chemical stability and three effects. Among them, compounds such as PVA are difficult to degrade.

[0036] use figure 1 The shown wastewater biological aerobic treatment reactor, add 100L COD to 2100 ~ 2500mg / L printing and dyeing wastewater, the reactor adopts the sequential batch operation mode, inoculate the sludge, and at the same time add microbial agents according to 2% of the effective volume of the reactor ( Contains PVA degrading bacteria, decolorizing bacteria, aromatics degrading bacteria and other high-efficiency microorganisms), adopts two-stage aerobic treatment process, the first stage adopts granular sludge treatment, the hydraulic retention time is 16h, and the second stage adop...

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Abstract

The invention belongs to the technical field of wastewater treatment and relates to a method for using acoustic-magnetic coupling to strengthen microorganisms to treat refractory wastewater. By adding magnetic powder and ultrasonic generator to the reactor, optimizing and controlling the condition parameters of the physical energy field, the metabolic activity of microorganisms in the treatment system can be improved, the mass transfer efficiency of the system can be enhanced, and the rapid granulation of sludge and the effective retention of dominant microorganisms can be realized. , Improve the efficiency of wastewater biological treatment.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment and relates to a method for using acoustic-magnetic coupling to strengthen microorganisms to treat refractory wastewater. Background technique [0002] At present, my country's industrial wastewater discharge is 24.31 billion tons, of which the discharge load of key polluting industries such as petrochemical, printing and dyeing, and pharmaceuticals accounts for more than 85% of industrial wastewater, and these wastewaters contain a large amount of refractory toxic substances. Due to their refractory characteristics and There is a lack of effective treatment methods for it, the rate of wastewater discharge compliance is low, and it is difficult to realize the reuse of reclaimed water. Moreover, due to its accumulation in water bodies, it has caused serious water environmental pollution in my country and has caused serious harm to drinking water safety. In recent years, biological treat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/48C02F1/36C02F3/30
Inventor 李旭东谭周亮李文卫
Owner CHENGDU INST OF BIOLOGY CHINESE ACAD OF S
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