Iron-carbon micro-electrolysis device for ultralow-pH wastewater
By designing an iron carbon micro -electrolytic device including reaction tanks and adjustment tanks, the reflux pipe and adjustment tank are used for pH to regulate the pH value, which solves the problem of high alkali resources when dealing with ultra -low pH acid wastewater. The long life of wastewater treatment and filling.
Patent Information
- Application Number
- CN202420891875.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-26
AI Technical Summary
When using ultra-low pH acidic wastewater, existing iron-carbon microelectrolytic devices need to release a large amount of alkali for neutralization, resulting in high treatment costs and waste of alkali resources.
A iron carbon microstatic device that includes the reaction tank and adjustment tank is designed. The pH value is regulated by the reflux pipe and the adjustment tank. The perforated aeration tube is used to disturb the iron carbon micro -electrolytic fillers to avoid plate knots.
You can efficiently handle ultra -low pH wastewater without adding alkali, reduce consumption of alkali resources, avoid intense reactions, improve processing efficiency and safety, and extend the service life of the filler.
Smart Images
Figure CN222411160U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of industrial wastewater treatment, and particularly relates to an iron-carbon micro-electrolysis device for ultra-low pH wastewater. Background Art
[0002] Iron-carbon micro-electrolysis devices and processes are often used to treat COD wastewater that is difficult to degrade. The main components of iron-carbon micro-electrolysis fillers are iron and carbon. When the fillers are immersed in the electrolyte solution, due to the 1.2V electrode potential difference between Fe and C, countless micro-battery systems are formed. The anode reaction generates a large amount of Fe 2+ Enters the wastewater and is oxidized to Fe 3+ , the cathode reaction produces a large number of new ecological hydroxyl radicals. Since the cathode reaction consumes a large amount of H + A large amount of OH is generated - , thus increasing the pH of the wastewater.
[0003] In the iron-carbon micro-electrolysis treatment process, the optimal pH value range is 3-5, but in actual application, the pH value of many acidic industrial wastewaters is far below the lower limit of this range, becoming ultra-low pH acidic wastewater. When the ultra-low pH acidic wastewater is directly transported to the reaction tank containing iron-carbon micro-electrolysis filler, a violent reaction will occur and a large amount of hydrogen will be released. If the pH value of the ultra-low pH acidic wastewater is to be increased, a large amount of alkali must be added for neutralization, which will inevitably increase the wastewater treatment cost and waste alkali resources. Therefore, it is necessary to improve the existing technology. Utility Model Content
[0004] In order to increase the pH value of ultra-low acid wastewater and reduce or avoid alkali consumption, the utility model provides an iron-carbon micro-electrolysis device for ultra-low pH wastewater.
[0005] The utility model is completed through the following technical scheme: an iron-carbon micro-electrolysis device for ultra-low pH wastewater, including a reaction tank and an adjusting tank, characterized in that the reaction tank and the adjusting tank are connected by a bottom delivery pipe and a top reflux pipe, and a delivery pump and a check valve for flowing from the adjusting tank to the reaction tank are arranged on the delivery pipe; a raw water pipe and a pH detector are arranged on the adjusting tank, a water outlet connected to a water outlet pipe is arranged on the top of the reaction tank, and an iron-carbon micro-electrolysis filler is filled inside the reaction tank; the position of the reflux port connected to the reflux pipe on the top of the reaction tank is lower than the position of the water outlet connected to the water outlet pipe, and the reflux port and the water outlet are both lower than the highest liquid level of the reaction tank, and the highest liquid level of the adjusting tank is lower than the reflux water inlet of the reflux pipe.
[0006] A control valve is arranged on the reflux pipe so that the flow rate of the reflux pipe can be adjusted through the control valve according to actual needs to meet the pH value adjustment needs in the adjustment tank.
[0007] The water outlet pipe is provided with a first valve for controlling the amount of water outlet.
[0008] The raw water pipe is provided with a second valve for controlling the amount of ultra-low pH wastewater entering.
[0009] A perforated aeration pipe is provided at the bottom of the reaction tank, and the perforated aeration pipe is connected to an external blower so that pressurized gas can be fed into the reaction tank through the perforated aeration pipe, thereby disturbing the iron-carbon micro-electrolysis filler therein to avoid compaction.
[0010] The regulating tank is provided with a stirrer for enhancing the mixing effect of the wastewater with ultra-low pH value and the return water.
[0011] Compared with the prior art, the utility model has the following technical effects:
[0012] 1. When used to treat ultra-low pH wastewater, there is no need to add alkali. It can efficiently treat ultra-low pH wastewater by adjusting it only through the reflux pipe and the adjustment tank, greatly saving the consumption of alkali resources.
[0013] 2. When used to treat wastewater with ultra-low pH value, it can effectively prevent the wastewater from directly entering the reaction tank and causing violent reactions, thereby improving treatment efficiency and ensuring safety.
[0014] 3. A check valve is installed on the delivery pipe to prevent the water in the reaction tank from flowing back to the regulating tank after the pump is stopped.
[0015] 4. When used to treat wastewater with ultra-low pH value, the pressurized gas provided by the perforated aeration tube in the reaction tank disturbs the iron-carbon micro-electrolysis filler, effectively avoiding the compaction of the iron-carbon micro-electrolysis filler, extending its service life and reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the utility model. DETAILED DESCRIPTION
[0017] The utility model is further described below with reference to the embodiments given in the accompanying drawings.
[0018] The utility model provides an iron-carbon micro-electrolysis device for ultra-low pH wastewater, comprising a reaction tank 1 and a regulating tank 9, wherein the reaction tank 1 and the regulating tank 9 are connected via a bottom delivery pipe 16 and a top reflux pipe 7, and the delivery pipe 16 is provided with a delivery pump 15 and a check valve 14 for flowing from the regulating tank 1 to the reaction tank 9; the regulating tank 1 is provided with a raw water pipe 5 and a pH detector 4, the top of the reaction tank 9 is provided with a water outlet connected to a water outlet pipe 11, and the reaction tank 9 is filled with an iron-carbon micro-electrolysis filler 12; the position of the reflux port connected to the reflux pipe 7 at the top of the reaction tank 9 is lower than the position of the water outlet connected to the water outlet pipe 11, and both the reflux port and the water outlet are lower than the highest liquid level of the reaction tank 9, and the highest liquid level of the regulating tank 1 is lower than the reflux water inlet of the reflux pipe 7;
[0019] The reflux pipe 7 is provided with a control valve 8 so that the flow rate of the reflux pipe 7 can be adjusted through the control valve 8 according to actual needs to meet the pH value adjustment needs in the adjustment tank 1 .
[0020] The water outlet pipe 11 is provided with a first valve 10 for controlling the amount of water outlet.
[0021] The raw water pipe 5 is provided with a second valve 6 for controlling the amount of ultra-low pH wastewater entering.
[0022] A perforated aeration pipe 13 is provided at the bottom of the reaction tank 9, and the perforated aeration pipe 13 is connected to an external blower so that pressurized gas can be fed into the reaction tank 9 through the perforated aeration pipe 13, thereby disturbing the iron-carbon micro-electrolysis filler 12 therein to avoid compaction.
[0023] The regulating tank 1 is provided with a stirrer 2 for enhancing the mixing effect of the wastewater with ultra-low pH value and the return water.
[0024] During operation, ultra-low pH wastewater enters the regulating tank 1 through the raw water pipe 5, and after mixing with the reflux water, it is pressurized by the delivery pump 15 and enters the reaction tank 9 filled with iron-carbon micro-electrolysis filler 12 through the delivery pipe 16. After reacting with the iron-carbon micro-electrolysis filler 12 from bottom to top, pollutants such as COD are removed while the pH value is increased. After the reaction, part of the wastewater enters the next-level treatment device through the outlet pipe 11, and the other part is transported to the regulating tank 1 through the reflux pipe 7. When the pH value is low, the delivery volume is increased, and vice versa.
[0025] The reflux amount of the treated water in the reaction tank 9 is controlled by the control valve 8 on the reflux pipe 7 according to the timely detection of the pH value of the wastewater in the regulating tank 1, so as to adjust the pH value of the wastewater in the regulating tank 1 without consuming alkali resources;
[0026] After running for a period of time, the external blower is started as needed to send pressurized gas into the perforated aeration pipe 13 in the reaction tank 9, so as to disturb the iron-carbon micro-electrolysis filler 12 to avoid compaction.
Claims
1. An iron-carbon micro-electrolysis device for ultra-low pH wastewater, comprising a reaction tank and a regulating tank, characterized in that The reaction tank and the regulating tank are connected by a bottom delivery pipe and a top reflux pipe, and the delivery pipe is provided with a delivery pump and a check valve for water flowing from the regulating tank to the reaction tank; the regulating tank is provided with a raw water pipe and a pH detector, and the top of the reaction tank is provided with a water outlet connected to the outlet pipe, and the inside of the reaction tank is filled with iron-carbon micro-electrolysis filler; the reflux port connected to the reflux pipe on the top of the reaction tank is lower than the water outlet connected to the outlet pipe, and the reflux port and the outlet are both lower than the highest liquid level of the reaction tank, and the highest liquid level of the regulating tank is lower than the reflux water inlet of the reflux pipe.
2. The iron-carbon micro-electrolysis device for ultra-low pH wastewater according to claim 1, characterized in that A control valve is arranged on the reflux pipe.
3. The iron-carbon micro-electrolysis device for ultra-low pH wastewater according to claim 1, characterized in that The water outlet pipe is provided with a first valve.
4. The iron-carbon micro-electrolysis device for ultra-low pH wastewater according to claim 1, characterized in that The raw water pipe is provided with a second valve.
5. The iron-carbon micro-electrolysis device for ultra-low pH wastewater according to claim 1, characterized in that A perforated aeration pipe is provided at the lower part of the reaction tank, and the perforated aeration pipe is connected to an external blower.
6. The iron-carbon micro-electrolysis device for ultra-low pH wastewater according to claim 1, characterized in that A stirrer is arranged in the regulating tank.