Treatment method of high-concentration organic wastewater

A technology of organic wastewater and treatment methods, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of no obvious improvement in treatment efficiency, high dosage of chemicals, and low treatment Cost and other issues, to achieve the effects of less loss of micro-electrolytic filler, high utilization efficiency, and cost-saving treatment

Inactive Publication Date: 2014-06-18
苏州森荣环保处置有限公司
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Problems solved by technology

At present, the pretreatment methods for this kind of high-concentration organic wastewater mainly include electrolysis, advanced oxidation, catalytic oxidation, wet oxidation, etc. Since each oxidation treatment technology has different advantages and disadvantages, it has its own limitations when used alone. Simple patchwork and superposition often lead to problems such as high dosage of chemicals, high energy consumption and no obvious improvement in treatment efficiency. However, proper optimal combination and compound combination of various treatment technologies can obtain the best treatment effect and the lowest treatment cost.

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Examples

Experimental program
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Effect test

Embodiment 1

[0024] See Table 1 for the water quality indicators of the mother liquor of antibiotic pharmaceutical wastewater from a pharmaceutical factory. Put 2L of the waste water into the ultrasonic reactor through the water inlet pipe, turn on the power for ultrasonic cracking, the ultrasonic wave is set to 20KHz, and the intensity is 10W / cm 2 , Ultrasonic reaction for 30 minutes, turn off the power after the reaction is completed, the waste water is discharged into the micro-electrolysis reactor through the outlet pipe, the inner volume of the reactor is 4L, the mass of iron and carbon is 1K, the aeration device is turned on, the dissolved oxygen is 2mg / L, Add concentrated sulfuric acid once at the beginning of the reaction, adjust the pH value of the wastewater to 1.0, add concentrated sulfuric acid once after reacting for 30 minutes, adjust the pH value of the wastewater to 1.0, and turn off the aeration device after reacting for 60 minutes, and the wastewater is discharged into the...

Embodiment 2

[0029] For a pesticide wastewater, the water quality indicators are shown in Table 2. Put 5L of the waste water into the ultrasonic reactor through the water inlet pipe, turn on the power for ultrasonic cracking, set the ultrasonic frequency to 50KHz, and the intensity to 5W / cm 2 , Ultrasonic reaction for 5 minutes, turn off the power after the reaction is completed, the waste water is discharged into the micro-electrolysis reactor through the outlet pipe, the volume of the reactor is 10L, the mass of iron and carbon is 3Kg, the aeration device is turned on, the dissolved oxygen is 4mg / L, Add concentrated sulfuric acid once at the beginning of the reaction, adjust the pH value of the wastewater to 5.0, add concentrated sulfuric acid once after reacting for 30 minutes, adjust the pH value of the wastewater to 3.0, and turn off the aeration device after reacting for 60 minutes, and the wastewater is discharged into the oxidation reaction pool through the outlet pipe. Start stirr...

Embodiment 3

[0033] The mother liquor of antibiotic pharmaceutical wastewater from a pharmaceutical factory, the water quality index is shown in Table 3. The water quality of the following experimental group was the same as that of the control group. Experimental group: 1L of the waste water is introduced into the ultrasonic reactor through the water inlet pipe, and the power is turned on for ultrasonic cracking. The ultrasonic frequency is 40KHz and the intensity is 20W / cm2 ，Ultrasonic reaction for 10 minutes, turn off the power after the reaction is completed, the waste water is discharged into the micro-electrolysis reactor through the outlet pipe, the volume of the reactor is 2L, the mass of iron and carbon is 0.5Kg, the aeration device is turned on, the dissolved oxygen is 3mg / L, Add concentrated sulfuric acid once at the beginning of the reaction, adjust the pH value of the wastewater to 2.0, add concentrated sulfuric acid once after reacting for 30 minutes, adjust the pH value of th...

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Abstract

The invention discloses a treatment method of high-concentration organic wastewater. The method has a favorable treatment effect on high-concentration organic wastewater of which the COD (Chemical Oxygen Demand) concentration is larger than 50000mg/L and the chromaticity is larger than 10000 times. The hardly degradable substances in the treated wastewater can be degraded, so that the biodegradability of the treated wastewater is improved and the treated wastewater reaches the biochemical treatment requirement. The treatment method smartly combines ultrasonic splitting, micro-electrolytic decomposition and high-grade oxidation, and the problem that the high-concentration organic wastewater which has high COD and large toxicity and is difficulty biochemically degraded is solved.

Description

Technical field: [0001] The invention belongs to the field of sewage treatment, and in particular relates to a treatment method for high-concentration organic wastewater. Background technique: [0002] With the rapid development of petroleum, chemical and pharmaceutical industries, a large amount of high-concentration organic industrial wastewater that is difficult to degrade has been produced. This type of wastewater has the characteristics of high organic pollutant content, high chroma, high toxicity, and difficult degradation. After hundreds of times, microorganisms are still difficult to cultivate and cannot be directly biochemically treated. In view of the poor biodegradability of this kind of wastewater, corresponding pretreatment methods can be used to improve the biodegradability of wastewater, thereby ensuring the treatment effect of the subsequent biochemical system. Therefore, selecting an appropriate pretreatment method is the key to treating this kind of wastewa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08
Inventor 刘雨
Owner 苏州森荣环保处置有限公司
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