Efficient bin type micro-electrolysis generator and waste water treatment process thereof
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A micro-electrolysis and generator technology, applied in water/sewage treatment, water/sewage treatment equipment, water treatment with fluid flow conditions, etc. Reaction effect, increase mass transfer effect, shorten reaction time effect
Active Publication Date: 2016-03-23
张建平
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[0013] At present, most of the micro-electrolysis equipment at home and abroad use fixed beds, which are characterized by simple structure and good plug-flow performance. However, there are many practical problems: First, after a period of operation of the packed bed, the surface of the packed bed will become passivated. In addition, the suspended particles in the wastewater will also partially deposit on the surface of the filler, which blocks the effective contact between the filler and the wastewater, resulting in a decrease in the treatment effect of the iron bed and a decrease in the reaction speed; Not ideal, it is easy to cause short circuit and dead zone, forming channel flow, reducing the treatment effect, and greatly increasing the difficulty of packing replacement; third, the consumption of iron filings is fast, and the supplementary labor intensity is high
[0014] In order to solve this problem, scholars have adopted the following methods: one is to solve the problem of passivation through regular activation of fillers. The operation period of the iron bed should be determined by the actual operation conditions, generally about 20d, and the activation time of fillers can be activated by immersion. Use 2-3h; the second is to effectively avoid the compaction of the filler by adding appropriate auxiliary materials (such as X50 polyethylene multi-faceted hollow balls, etc.) The use of fluidized bed devices can also better solve the problem of iron bed packing compaction, but the high investment costs and operational management requirements limit the application of this device
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Embodiment 1
[0048] Utilize the device of the present invention to treat the waste liquid of neutral measures in the oil field, and carry out micro-electrolysis treatment under the condition that the raw water quality COD is 1032mg / L and the viscosity is 10.98mPa. , 25, and 30 minutes, the COD of the water samples after the reaction was 774, 722, 681, 660, 640, and 619mg / L, and the COD removal rates were 25.00%, 30.04%, 34.01%, 36.05%, 37.98%, and 40.02%. ; Viscosities are 6.683, 3.23, 2.80, 2.77, 2.61, 2.59mPa.S respectively, comprehensively considered, the electrolysis time is 10-20min is more appropriate.
Embodiment 2
[0050] Utilize the device of the present invention to treat waste liquid from neutral measures in oil fields, and carry out micro-electrolysis treatment when the COD of the raw water quality is 1032 mg / L, and control the micro-electrolysis influent pH to be 1, 2, 3, 4, 5, 6, 7, respectively. 8. After the reaction, the COD of the water samples were 547, 526, 537, 566, 572, 578, 630, 676 mg / L, and the COD removal rates were 47.0%, 49.0%, 48.0%, 45.2%, 44.6%, 44.0 %, 39.0%, 34.5%, considering the corrosion of acid to the device and the difficulty of adjusting the pH, etc., the electrolysis pH is 5-6 is more suitable.
Embodiment 3
[0052] Utilize the device of the present invention to treat pharmaceutical factory waste water, and carry out micro-electrolysis treatment under the condition that raw water quality COD is 1522mg / L, respectively control the micro-electrolysis time to be 0, 5, 10, 15, 20, 25, 30min, and the water sample after the reaction is finished The COD is 774, 722, 681, 660, 640, 619mg / L, the COD removal rate is 35.0%, 38.2%, 42.8%, 46.5%, 50.6%, 54.3%, and the electrolysis time is 10-20min is more suitable.
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Abstract
The invention provides an efficient bin type micro-electrolysis generator and belongs to the field of micro-electrolysis devices. The efficient bin type micro-electrolysis generator comprises a tank body, supporting plates are arranged in the tank body in the vertical direction in a multi-layer mode, the supporting plate of each layer is provided with a filler bin chamber, a tubular water distributor is arranged at the bottom in the tank body and arranged below the supporting plate of the bottommost layer, and a layered gas distributor is arranged in the middle in the tank body. The efficient bin type micro-electrolysis generator is characterized in that a building method of the filler bin chamber includes the steps that a nylon net is laid on the supporting plate of each layer, PVC pipes are closely and vertically placed, a honeycomb-shaped bin-type reaction region is built, or a factory is pre-divided and manufactured into honeycomb-shaped and column-shaped regions, and the honeycomb-shaped bin-type reaction region built through the PVC pipes or the honeycomb-shaped and column-shaped regions formed by pre-dividing the factory are filled with micro-electrolysis materials. The problem that filler is prone to passivation and hardening can be solved, the short flow problem can also be solved with a unique method, and the effect is very good.
Description
technical field [0001] The invention relates to a micro-electrolysis device for treating organic waste liquid, especially suitable for the treatment of waste liquid for oil field measures. The invention belongs to the field of micro-electrolysis devices. Background technique [0002] Micro-electrolysis technology is currently a process for treating high-concentration organic wastewater, also known as internal electrolysis. Iron-carbon is often used as a micro-electrolysis material. Generally, iron-carbon and carbon particles are immersed in acidic wastewater, and the potential difference formed between the two Fe-C stages is used to form countless micro-primary batteries in the electrolysis device. These micro-galvanic batteries use iron with low potential as the anode and carbon with high potential as the cathode. Electrochemical reactions occur in the acidic aqueous electrolyte solution, which can form a potential difference of about 1.2V. [0003] Its reaction process i...
Claims
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Application Information
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