Process for pre-treating electrophoretic wastewater by micro-electrolysis and micro-electrolysis combination

The invention of the Patent application is the Patent application number 201711326142.7, his name called "Yangyang light centime automobile parts limited Company", title of invention is "micro-electrolysis and its combined pretreatment electrophoretic waste water" of the application 02134210.5 is applied for, the application is on 13 December 2017.

Technical Field

The present invention relates to the technical field of electrophoretic waste water treatment, in particular to a micro-electrolysis and its combined pretreatment electrophoresis of waste-water.

Background Art

Electrophoretic coating is nearly 30 years developed a special method of forming coating film, has a water-soluble, non-toxic, easy automation control and the like, in the automobile, electronic, building materials, and hardware industry and widely applied. Therefore, the electrophoretic waste water is thereupon, and becoming more widespread emergence of an industrial waste water, the waste water has a plurality of kinds of pollutants, the characteristics of the complex components.

In addition, as various industry sectors, the large difference in the scale of enterprises, electrophoretic waste water and, the water quality is also relatively high, electrophoretic waste water treatment process will also is diversity. Because the waste water treatment station must be on the same time with the new design of the production line, at the same time construction, at the same time put into operation, through on-site sampling mode cannot obtain accurate waste water quality, therefore electrophoretic coating waste water treatment works by the enterprises of raw water with water quality information determined in the same industry. But the current electrophoretic coating waste water treatment works occupies large area, each reaction vessel arrangement is not reasonable, waste water treatment effect is not stable.

Content of the invention

The invention the technical problem to be solved is to provide a waste water treatment effect is stable, non-person watching electrolysis and its combined pretreatment electrophoresis of waste-water.

In order to solve the above technical problem, the technical scheme of the present invention is: micro-electrolysis and its combined pretreatment electrophoretic waste water, comprising the following steps,

Step one, waste water collection

Set up a waste water adjusting tank, used for gathering electrophoretic waste water, said waste water adjusting tank is arranged on the precipitate for preventing waste water aeration device, the outlet end of the aeration device is arranged on the waste water regulating pool in the bottom of the, said aerating device of aeration intensity not less than 5 m³ (M² ·h) /, in the waste water regulation at one side of the one spare pool, said waste water adjusting tank and the stand-by tank is installed on the pipeline between the spare electromagnetic valve and spare water pump;

Step two, waste water treatment

Set up a reaction pool, said reaction tank is connected with the waste water regulating pond through the pumping device is communicated, the corresponding reaction in the pool is mounted with the aeration device, scraper, micro-electrolysis device and a stirring device, said reaction pool is connected to the dosing device, is arranged in the reaction pool PH value detecting probe, the PH value detecting probe connected to the signal output to the water treatment control device, the water treatment control device of the control end is connected to the dosing device, first of all the dosing device is added to the reaction in the pool PH value regulator, and starting the stirring device, the waste water is adjusted to PH value is 3.5 when, stop adding the PH value regulator, PH value in the adjustment phase, the stirring device of the stirring speed of not less than 180 r/min, then add through the arm device and at the same time scale inhibitor, flocculating agent and corrosion inhibitor, in adding the agent at the same time, the stirring device of the stirring speed is not lower than 260 r/min, after the medicine into, waste water in the reaction in the pool reaction time is not less than 5 h, after the reaction, stop stirring, waste water standing not less than 5 h, waste water in the reaction in the pool the whole and utilize the micro electrolytic device for electrolysis;

Step three, and the muddy water separation

In the reaction tank is set on one side and a sludge tank and the intermediate pool, said reaction pool with the top end of the top of the sludge pool is provided with a guide slot, said reaction pool with the bottom end of the tank there is a discharge pipe connected with the bottom of the mud, the mud is mounted on the electromagnetic valve and the mud discharging pump, using the device the reactor pool surface through the guide floc sludge in the pool, the reaction supernatant fluid in the pool intermediate in the pool, then using said water processing control device to the solenoid valve and the start, the reactor pool at the bottom of the precipitation of sludge in the sludge tank ;

Step four, the supernatant fluid filter

The intermediate in the pool is provided with a quartz sand filtering layer, said quartz sand filtering layer below said intermediate pool is provided with a drain pipe, the drain pipe is communicated with a clean water tank, said clean water tank through the clear water pipeline is connected to the spare pool, the cleaning water pipeline is installed on the water solenoid valve and the water pump, the water quality detection probe is arranged in the clean water tank, the water quality detection probe is connected to the water treatment control device, the water quality detection probe detection to measure water quality to be qualified, the water treatment control device automatically in the clean water tank of the water of the, when the water quality detection probe detects when the water quality is not qualified, the water treatment control device control said clean the cleaning by the electromagnetic valve and a water pump, the water entering into the to the stand-by pool to secondary processing;

Step five, sludge treatment

The sludge pool is provided with a sludge water filtering device, the moisture in the sludge separation, the efflux of the sludge drying after delivery.

As a preferred embodiment, the dosing device comprises a arranged in parallel with the four agent tanks, the PH value regulator, the states the antisludging agent, the flocculant and the inhibitor are respectively arranged in the tank of the corresponding agents, each of the tanks are respectively connected by pipes to the reaction pool, and each pipeline is correspondingly set with flow electromagnetic valve, each of the states the current capacity solenoid valve are connected to the water treatment control device.

As a preferred embodiment, the modulators of the PH value is set as the concentration is 10% of the sulfuric acid.

As a preferred embodiment, the states the antisludging agent comprises the following weight proportion of component:

The diethylene triamine pentacetic acid 10 - 15, lauryl dimethyl benzyl ammonium chloride 20 - 25, boron potassium hydride 10 - 15, maleic acid - acrylic acid copolymer 12 - 20, sodium polyacrylate 8 - 12.

As a preferred embodiment, the flocculating agent comprises the following weight proportion of component:

The nanometer silicon dioxide 3 - 4, ethylenediamine 0.1 - 0.2, chitosan 3 - 6, dioctyl phthalate 8 - 12, inorganic aluminum salt 0.3 - 0.6, inorganic salt 0.5 - 0.8.

As a preferred embodiment, the corrosion inhibitor comprises the following weight proportion of component:

Sodium tungstate 12 - 18, ethanol 5 - 9 parts, a diethanolamine 4 - 9, citric acid ammonium 20 - 35, water 230 - 300.

As a preferred embodiment, the water treatment control device comprises a microprocessor, the microprocessor is connected with a display, memory, hard disk and system bus, the microprocessor is also connected with a communication interface.

As a preferred embodiment, the communication interface is set based on the wired communication interface or GPRS, EDGE, WLAN, Wi - Fi, 3 G and 4 G wireless communications interface.

As a preferred embodiment, the aeration device comprises a , the air outlet end of the air pump pipe connected with, the sparged vertical tube connected to the bottom end of the outer pipe connected with the aeration, the aeration of the outer ring at one side in the sleeved is connected with a plurality of small diameters in aeration pipe.

By adopting the above technical scheme, the beneficial effects of the present invention: through the waste water regulating pool, the reaction tank, the intermediate tank and the like will be electrophoretic coating of the toxic waste water clarification processing, and realize the cement separation, avoid the electrophoretic coating of the direct discharge of water resources caused by pollution, in addition through the water treatment control setting of the device, system high degree of automation, the basic and unattended operation, thus saving labor costs.

Description of drawings

The following Figure only aimed at to the invention as illustrative and explained, does not limit the scope of the invention. Wherein:

Figure 1 is the structure diagram of the embodiment of the invention;

Figure 2 is the part of the structure diagram of the embodiment of the invention the aeration device;

In the Figure: 1 - aeration riser; 2 - aeration the external loop; 3 - aeration inner pipe.

Mode of execution

Combined with drawings and embodiments below, further elaboration of the invention. In the following detailed description, only by way of note to the description of the present invention certain exemplary embodiments. It goes without saying, the ordinary technical personnel in the field can be recognized, without deviating from the spirit of this invention and the scope of the circumstances, can be used in a variety of ways to the embodiment described is corrected. Therefore, Figures and description are illustrative in nature, and not for limiting the scope of protection.

As shown in Figure 1 and Figure 2, micro-electrolysis and its combined pretreatment electrophoretic waste water, comprising the following steps,

Step one, waste water collection

Set up a waste water adjusting tank, used for gathering electrophoretic waste water, said waste water adjusting tank is arranged on the precipitate for preventing waste water aeration device, the outlet end of the aeration device is arranged on the waste water regulating pool in the bottom of the, said aerating device of aeration intensity not less than 5 m³ (M² ·h) /, in the waste water regulation at one side of the one spare pool, said waste water adjusting tank and the stand-by tank is installed on the pipeline between the spare electromagnetic valve and spare water pump. The stand-by pool in the system failure or terminal water detecting not qualified to use. The aeration device comprises a , the air pump is connected to the air outlet end of the aeration pipe 1, the aeration pipe 1 connected to the bottom end of the outer pipe connected with the aeration 2, said aerating the external loop 2 at one side in the sleeved is connected with a plurality of small diameters in aeration pipe 3, adjacent said aerating the outer pipe 2 and the aeration inner pipe 3 and between the adjacent said aeration inner pipe 3 is disposed between the connecting arm, said aerating the outer pipe 2 and the aeration inner pipe 3 are uniformly distributed on the aeration holes, a plurality of aeration position, arranged evenly, contribute to improving the aeration quality.

Step two, waste water treatment

Set up a reaction pool, said reaction tank is connected with the waste water regulating pond through the pumping device is communicated, the corresponding reaction in the pool is mounted with the aeration device, scraper, micro-electrolysis device and a stirring device, said reaction pool is connected to the dosing device, is arranged in the reaction pool PH value detecting probe, the PH value detecting probe connected to the signal output to the water treatment control device, the water treatment control device of the control end is connected to the dosing device, first of all the dosing device is added to the reaction in the pool PH value regulator, and starting the stirring device, the waste water is adjusted to PH value is 3.5 when, stop adding the PH value regulator, PH value in the adjustment phase, the stirring device of the stirring speed of not less than 180 r/min, then add through the arm device and at the same time scale inhibitor, flocculating agent and corrosion inhibitor, in adding the agent at the same time, the stirring device of the stirring speed is not lower than 260 r/min, after the medicine into, waste water in the reaction in the pool reaction time is not less than 5 h, after the reaction, stop stirring, waste water standing not less than 5 h, waste water in the reaction in the pool the whole and utilize the micro electrolytic device for electrolysis. The micro-electrolytic device of the concrete structure is in the technical field of ordinary technical personnel are well-known content.

This embodiment of the arm device comprises a arranged in parallel with the four agent tanks, the PH value regulator, the states the antisludging agent, the flocculant and the inhibitor are respectively arranged in the tank of the corresponding agents, each of the tanks are respectively connected by pipes to the reaction pool, and each pipeline is correspondingly set with flow electromagnetic valve, each of the states the current capacity solenoid valve are connected to the water treatment control device.

Wherein the PH value regulator is set to a concentration of 10% of the sulfuric acid. The states the antisludging agent comprises the following weight proportion of component: diethylene triamine pentacetic acid 10 - 15, lauryl dimethyl benzyl ammonium chloride 20 - 25, boron potassium hydride 10 - 15, maleic acid - acrylic acid copolymer 12 - 20, sodium polyacrylate 8 - 12. The flocculant comprises the following weight proportion of component: nano silicon dioxide 3 - 4, ethylenediamine 0.1 - 0.2, chitosan 3 - 6, dioctyl phthalate 8 - 12, inorganic aluminum salt 0.3 - 0.6, inorganic salt 0.5 - 0.8. Said corrosion inhibitor comprises the following weight proportion of component: tungsten sodium 12 - 18, ethanol 5 - 9 parts, a diethanolamine 4 - 9, citric acid ammonium 20 - 35, water 230 - 300.

As a preferred embodiment, the weight proportion of states the antisludging agent is: diethylene triamine pentacetic acid 12, lauryl dimethyl benzyl ammonium chloride 22, boron potassium hydride 13, maleic acid - acrylic acid copolymer 16, sodium polyacrylate 9. The flocculant and weight proportion of: nano silicon dioxide 3.5, ethylenediamine 0.15, chitosan 4, dioctyl phthalate 10, inorganic aluminum salt 0.5, inorganic salt 0.6. The corrosion inhibitor and weight proportion of: tungsten sodium 16, ethanol 7 parts, a diethanolamine 6, citric acid ammonium 28, water 280.

Step three, and the muddy water separation

In the reaction tank is set on one side and a sludge tank and the intermediate pool, said reaction pool with the top end of the top of the sludge pool is provided with a guide slot, said reaction pool with the bottom end of the tank there is a discharge pipe connected with the bottom of the mud, the mud is mounted on the electromagnetic valve and the mud discharging pump, using the device the reactor pool surface through the guide floc sludge in the pool, the reaction supernatant fluid in the pool intermediate in the pool, then using said water processing control device to the solenoid valve and the start, the reactor pool at the bottom of the precipitation of sludge in the sludge tank ;

Step four, the supernatant fluid filter

The intermediate in the pool is provided with a quartz sand filtering layer, said quartz sand filtering layer below said intermediate pool is provided with a drain pipe, the drain pipe is communicated with a clean water tank, said clean water tank through the clear water pipeline is connected to the spare pool, the cleaning water pipeline is installed on the water solenoid valve and the water pump, the water quality detection probe is arranged in the clean water tank, the water quality detection probe is connected to the water treatment control device, the water quality detection probe detection to measure water quality to be qualified, the water treatment control device automatically in the clean water tank of the water of the, when the water quality detection probe detects when the water quality is not qualified, the water treatment control device control said clean the cleaning by the electromagnetic valve and a water pump, the water entering into the to the stand-by pool to secondary processing. The water treatment control device comprises a microprocessor, the microprocessor is connected with a display, memory, hard disk and system bus, the microprocessor is also connected with a communication interface, the communication interface is set based on the wired communication interface or GPRS, EDGE, WLAN, Wi - Fi, 3 G and 4 G wireless communications interface.

Step five, sludge treatment

The sludge pool is provided with a sludge water filtering device, the moisture in the sludge separation, the efflux of the sludge drying after delivery.

The invention through the waste water regulating pool, the reaction tank, the intermediate tank and the like will be electrophoretic coating of the toxic waste water clarification processing, and realize the cement separation, avoid the electrophoretic coating of the direct discharge of water resources caused by pollution, in addition through the water treatment control setting of the device, system high degree of automation, the basic realize the unattended operation, thus saving labor costs.

The above display and described the basic principle of this invention, the main features and advantages of the present invention. The industry technical personnel should understand, the invention is not limited to the above embodiment, the above-mentioned embodiment and described in the specification are intended solely to illustrate the principle of the invention, in not breaking away from the spirit and scope of the present invention under the premise, the invention also there will be various changes and improvements, these changes and improvements in the fall into the claimed scope of the invention. The invention claimed by the scope of the attached claims and their equivalent defined.