An integrated device for treating circuit board wastewater

Abstract

The present invention discloses an integrated device for treating circuit board wastewater, comprising: a complex copper wastewater pretreatment mechanism, a copper ammonia wastewater pretreatment mechanism, an organic wastewater pretreatment mechanism, a copper-containing wastewater pretreatment mechanism, and a comprehensive wastewater treatment mechanism connected to the complex copper wastewater pretreatment mechanism, the copper ammonia wastewater pretreatment mechanism, the organic wastewater pretreatment mechanism, and the copper-containing wastewater pretreatment mechanism; the organic wastewater pretreatment mechanism comprises: a high-concentration organic wastewater pretreatment mechanism and a low-concentration organic wastewater pretreatment mechanism. The present invention can perform diversion, classified collection and pretreatment operations according to the differences in the type, nature and concentration of wastewater generated in the circuit board production process, and finally merge into one and carry out comprehensive treatment through the comprehensive wastewater treatment mechanism, so as to meet the emission standards and effectively improve the treatment efficiency of circuit board wastewater.

Description

Technical Field

[0001] The invention relates to the field of wastewater treatment equipment, and in particular to an integrated equipment for treating circuit board wastewater. Background Art

[0002] During the production of circuit boards, various types of circuit board wastewater are generated, such as: complex copper wastewater, copper-ammonia wastewater, copper-containing wastewater, high-concentration organic wastewater, low-concentration organic wastewater and comprehensive wastewater. In order to prevent the circuit board wastewater from being directly discharged into the external environment and causing environmental pollution, the above wastewater needs to be treated. Due to the different chemical components and substances contained in the above wastewaters, if they are directly mixed, the water quality of the wastewater will change and the difficulty of wastewater treatment will increase. If they are treated separately, a wastewater treatment equipment needs to be designed for each type of wastewater, resulting in a complicated wastewater treatment process, difficulty in designing wastewater treatment equipment, and high wastewater treatment costs.

[0003] Therefore, the prior art has defects and needs to be improved. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an integrated device for treating circuit board wastewater, so as to solve the problem in the prior art that circuit board wastewater cannot be centrally treated, resulting in high circuit board wastewater treatment costs and difficulty in designing circuit board wastewater treatment equipment.

[0005] The technical solution of the present invention is as follows: an integrated device for treating circuit board wastewater, comprising: a complex copper wastewater pretreatment mechanism, a copper ammonia wastewater pretreatment mechanism, an organic wastewater pretreatment mechanism, a copper-containing wastewater pretreatment mechanism, and a comprehensive wastewater treatment mechanism connected to the complex copper wastewater pretreatment mechanism, the copper ammonia wastewater pretreatment mechanism, the organic wastewater pretreatment mechanism, and the copper-containing wastewater pretreatment mechanism;

[0006] The complex copper wastewater pretreatment mechanism comprises: a first regulating tank, a complex breaking tank, a first coagulation tank, and a first sedimentation tank which are sequentially arranged in series.

[0007] The copper ammonia wastewater pretreatment mechanism comprises: a second regulating tank, a first pH adjustment tank, a chlorination tank, a second coagulation tank, and a second sedimentation tank which are connected in series in sequence.

[0008] The organic wastewater pretreatment mechanism includes: a high-concentration organic wastewater pretreatment mechanism and a low-concentration organic wastewater pretreatment mechanism. The high-concentration organic wastewater pretreatment mechanism includes: a third regulating tank, an acid precipitation tank, and an intermediate tank connected in series in sequence; the low-concentration organic wastewater pretreatment mechanism includes: a fourth regulating tank, an acid adjustment catalyst mixing tank, an oxidation tank, a third coagulation tank, and a third sedimentation tank connected in series in sequence, and the liquid outlet end of the intermediate tank is connected to the liquid inlet end of the fourth regulating tank.

[0009] The copper-containing wastewater pretreatment mechanism comprises: a fifth regulating tank, a second pH adjustment tank, a fourth coagulation tank, and a fourth sedimentation tank which are connected in series in sequence.

[0010] The comprehensive wastewater treatment mechanism includes: a comprehensive wastewater regulating tank, a primary sedimentation regulating tank, a hydrolysis acidification tank, a contact oxidation tank, a fifth coagulation tank, and a fifth sedimentation tank connected in series in sequence; the liquid outlet ends of the first sedimentation tank, the second sedimentation tank, the third sedimentation tank, and the fourth sedimentation tank are all connected to the liquid inlet end of the comprehensive wastewater regulating tank through pipelines.

[0011] The ammonia nitrogen ions in the copper ammonia wastewater are removed by the copper ammonia wastewater pretreatment mechanism, and the copper removal operation is further performed after the ammonia nitrogen ions are removed. This process can reduce the burden of subsequent ammonia nitrogen treatment. The high-concentration organic wastewater can be converted into low-concentration organic wastewater through the organic wastewater pretreatment mechanism, and the heavy metals in the low-concentration organic wastewater are further removed. At the same time, the COD content in the low-concentration organic wastewater is reduced, and the burden of subsequent COD treatment is reduced. The copper in the copper-containing wastewater is removed by the copper-containing wastewater pretreatment mechanism, so that the comprehensive wastewater transported to the comprehensive wastewater treatment mechanism is basically free of copper. After being treated by the comprehensive wastewater treatment mechanism, it is further removed The COD substances and nitrogen-containing substances in the comprehensive wastewater meet the wastewater discharge standards; the present invention conducts diversion, classification and collection according to the differences in the types, properties and concentrations of the wastewater generated in the circuit board production process, first performs pretreatment operations, and finally merges them for treatment, thereby reducing the fluctuation of wastewater quality, effectively improving the treatment efficiency of circuit board wastewater, reducing the mutual interference of various pollutants, simplifying the treatment process of circuit board wastewater, reducing the treatment difficulty, and there is no need to design a wastewater treatment equipment for each type of wastewater, and directly adopts an integrated equipment for treating circuit board wastewater in the present invention, thereby effectively reducing production costs.

[0012] Furthermore, the primary sedimentation regulating tank comprises: a primary sedimentation pH adjustment tank, a primary sedimentation coagulation tank, a primary sedimentation flocculation tank, and a primary sedimentation tank connected in series in sequence, and the liquid outlet end of the primary sedimentation tank is connected to the liquid inlet end of the hydrolysis acidification tank.

[0013] Furthermore, the first coagulation tank, the second coagulation tank, the third coagulation tank, the fourth coagulation tank and the fifth coagulation tank all include a coagulation tank and a flocculation tank, and the coagulation tank is connected to the flocculation tank.

[0014] Furthermore, the network breaking pool includes: a primary network breaking pool and a secondary network breaking pool connected to the primary network breaking pool.

[0015] Furthermore, agitators are provided in the coagulation tank, flocculation tank, chlorination tank, acid precipitation tank, oxidation tank, first PH adjustment tank, second PH adjustment tank, primary PH adjustment tank, ligand breaking tank, primary coagulation tank, and primary flocculation tank.

[0016] Furthermore, the first sedimentation tank, the second sedimentation tank, the third sedimentation tank, the fourth sedimentation tank, the fifth sedimentation tank and the primary sedimentation tank all include a sedimentation area and a sludge discharge area, and an inlet weir and an outlet weir are respectively provided at both ends of the sedimentation area.

[0017] Furthermore, a honeycomb inclined tube is arranged in the sedimentation area, and a water retaining plate is arranged on the side of the honeycomb inclined tube close to the water inlet weir; a plurality of mud buckets are arranged in the mud discharge area, and a mud discharge port connected to the mud bucket is arranged on the bottom side of the mud discharge area, and the plurality of mud buckets are arranged on the lower side of the honeycomb inclined tube.

[0018] Furthermore, the hydrolysis-acidification tank is provided with hydrolysis-acidification biological fillers and hydrolysis-acidification microorganisms, and the hydrolysis-acidification microorganisms are attached to the hydrolysis-acidification biological fillers and form a hydrolysis-acidification biofilm.

[0019] Furthermore, aerobic biological fillers and aerobic microorganisms are arranged in the contact aerobic pool, and the aerobic microorganisms are attached to the surface of the aerobic biological fillers and form an aerobic biofilm.

[0020] Furthermore, the material of the hydrolytic biological filler and the aerobic biological filler is a blend of vinylon and polypropylene, the hydrolytic acidifying microorganism is of the genus Clostridium or Echinobacterium, and the aerobic microorganism is of the genus Actionobacterium or Pseudomonas or Alcaligenes.

[0021] By adopting the above scheme, the present invention provides an integrated device for treating circuit board wastewater, which has the following beneficial effects:

[0022] 1. Set up the complex copper wastewater pretreatment mechanism, the copper ammonia wastewater pretreatment mechanism, the organic wastewater pretreatment mechanism, and the copper-containing wastewater pretreatment mechanism respectively, so that the wastewater generated in the circuit board production process can be diverted, classified, collected and pretreated according to the type, nature and concentration of the wastewater, and finally merged together for comprehensive treatment through the comprehensive wastewater treatment mechanism to meet the discharge standards and effectively improve the treatment efficiency of circuit board wastewater;

[0023] 2. There is no need to design a wastewater treatment device for each type of wastewater. All circuit board wastewater can be treated by directly using an integrated device for treating circuit board wastewater in the present invention, which effectively reduces production costs, simplifies the treatment process of circuit board wastewater, and reduces the difficulty of treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the lower structure of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the middle layer structure of the present invention;

[0026] Figure 3It is a structural schematic diagram of the upper structure of the present invention;

[0027] Figure 4 for Figure 1 , Figure 2 , Figure 3 Sectional view along line AA;

[0028] Figure 5 for Figure 1 , Figure 2 , Figure 3 Sectional view of the middle BB line;

[0029] Figure 6 for Figure 4 Enlarged view of point C in the middle.

[0030] Wherein: first regulating tank 10, primary network breaking tank 11, secondary network breaking tank 12, first coagulation tank 13, first sedimentation tank 14, second regulating tank 20, first PH adjustment tank 21, chlorination tank 22, second coagulation tank 23, second sedimentation tank 24, third regulating tank 30, acid precipitation tank 31, intermediate tank 32, fourth regulating tank 40, acid adjustment catalyst mixing tank 41, oxidation tank 42, third coagulation tank 43, third sedimentation tank 44, fifth regulating tank 50, second PH adjustment tank 51, fourth coagulation tank 5 2. The fourth sedimentation tank 53, the comprehensive wastewater regulating tank 60, the primary sedimentation pH adjustment tank 61, the primary sedimentation coagulation tank 62, the primary sedimentation flocculation tank 63, the primary sedimentation tank 64, the hydrolysis acidification tank 65, the contact oxidation tank 66, the fifth coagulation tank 67, the fifth sedimentation tank 68, the pH adjustment tank 69, the mixer 7, the sedimentation area 80, the mud discharge area 81, the water inlet weir 82, the water outlet weir 83, the honeycomb inclined pipe 84, the water retaining plate 85, the mud bucket 86, the mud discharge port 87, the emergency tank 90, the drug addition room 91, the fan room 92, and the control room 93. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Please refer to Figure 1-Figure 6The present invention provides an integrated device for treating circuit board wastewater, including: a complex copper wastewater pretreatment mechanism, a copper ammonia wastewater pretreatment mechanism, an organic wastewater pretreatment mechanism, a copper-containing wastewater pretreatment mechanism, and a comprehensive wastewater treatment mechanism connected to the complex copper wastewater pretreatment mechanism, the copper ammonia wastewater pretreatment mechanism, the organic wastewater pretreatment mechanism, and the copper-containing wastewater pretreatment mechanism. The complex copper wastewater pretreatment mechanism is used to pretreat wastewater containing complex copper compounds in circuit board wastewater, the copper ammonia wastewater pretreatment mechanism is used to pretreat wastewater containing copper ammonia compounds in circuit board wastewater, the organic wastewater pretreatment mechanism is used to pretreat wastewater containing high-concentration organic matter and low-concentration organic matter in circuit board wastewater, and the copper-containing wastewater pretreatment mechanism is used to pretreat wastewater containing copper compounds in circuit board wastewater. After the above-mentioned various wastewaters undergo corresponding pretreatment operations, they are discharged into the comprehensive wastewater treatment mechanism through pipes or holes, and other wastewater in circuit board wastewater (except the above-mentioned wastewater that needs to be pretreated) is directly transported to the comprehensive wastewater treatment mechanism for treatment.

[0033] The pretreatment mechanism of the complex copper wastewater includes: a first regulating tank 10, a complex breaking tank, a first coagulation tank 13, and a first sedimentation tank 14 which are arranged in series in sequence; the complex breaking tank includes: a primary complex breaking tank 11, and a secondary complex breaking tank 12 connected to the primary complex breaking tank 11; the first coagulation tank 13 includes: a coagulation tank and a flocculation tank. The complex copper wastewater is transported to the first regulating tank 10 through a pipeline, and after the water quantity and quality are adjusted in the first regulating tank 10, the complex copper wastewater is transported to the primary complex breaking tank 11 through a lifting pump, and sodium hydroxide solution (alkaline solution) and sodium sulfide solution are added to the primary complex breaking tank 11 in sequence through the dosing point on the primary complex breaking tank 11. The sodium sulfide solution is used as a complex breaking agent to destroy the complex structure of the complex copper, so that after the addition of the sodium hydroxide solution, copper hydroxide precipitate can be quickly formed, and the reaction solution is flowed into the secondary complex breaking tank 12 through the hole, and after waiting for sufficient reaction, the secondary complex breaking tank 12 is further added. The reaction liquid in the secondary decomposition tank 12 is transported to the coagulation tank of the first coagulation tank 13 through the hole, and the coagulant PAC solution is added into the coagulation tank through the dosing point on the coagulation tank to cause a coagulation reaction. After sufficient reaction, the reaction liquid is transported to the flocculation tank of the first coagulation tank 13 through the hole, and the flocculant PAM solution is added into the flocculation tank through the dosing point on the flocculation tank. After sufficient reaction, the flocculation liquid is transported to the first sedimentation tank 14 for sedimentation operation. After the sedimentation operation is completed, the precipitated residue is discharged to the waste residue treatment equipment, and the upper liquid part is transported to the comprehensive wastewater treatment mechanism.

[0034] The copper-ammonia wastewater pretreatment mechanism includes: a second regulating tank 20, a first PH adjustment tank 21, a chlorination tank 22, a second coagulation tank 23, and a second sedimentation tank 24 connected in series in sequence; the second coagulation tank 23 includes: a coagulation tank and a flocculation tank. The copper-ammonia wastewater is transported to the second regulating tank 20 of the copper-ammonia wastewater pretreatment mechanism through a pipeline for homogenization adjustment to adjust the water quantity and quality. After adjustment in the second regulating tank 20, the copper-ammonia wastewater is transported to the first PH adjustment tank 21 through a lifting pump, and sulfuric acid solution (acid solution) is added to the first PH adjustment tank 21 through a dosing point on the first PH adjustment tank 21. The PH value is controlled at about 4 to 7. After the PH value adjustment is completed, the reaction liquid is transported to the chlorination tank 22 through a hole, and sodium hypochlorite solution is added to the chlorination tank 22 through a dosing point on the chlorination tank 22. After sufficient reaction (the reaction time is preferably 30min to 60min), the reaction liquid in the chlorination tank 22 is The reaction liquid is transported to the coagulation tank of the second coagulation tank 23, and sodium hydroxide solution, sodium sulfide solution (complex breaker) and coagulant PAC solution are added to the coagulation tank in turn through the dosing points on the flocculation tank to ensure that the pH value in the coagulation tank is controlled at 8-9 during the coagulation reaction. After sufficient reaction, the reaction liquid is transported to the flocculation tank of the second coagulation tank 23 through the hole, and the flocculant PAM solution is added to the flocculation tank through the dosing points on the flocculation tank to cause flocculation reaction. After sufficient reaction, the flocculation liquid is transported to the second sedimentation tank 24 for sedimentation operation. After the sedimentation operation is completed, the precipitated residue is discharged to the waste residue treatment equipment, and the upper liquid part is transported to the comprehensive wastewater treatment mechanism.

[0035] The organic wastewater pretreatment mechanism includes: a high-concentration organic wastewater pretreatment mechanism and a low-concentration organic wastewater pretreatment mechanism. The high-concentration organic wastewater pretreatment mechanism includes: a third regulating tank 30, an acid precipitation tank 31, and an intermediate tank 32 connected in series in sequence; the low-concentration organic wastewater pretreatment mechanism includes: a fourth regulating tank 40, an acid adjustment catalyst mixing tank 41, an oxidation tank 42, a third coagulation tank 43, and a third sedimentation tank 44 connected in series in sequence, and the liquid outlet end of the intermediate tank 32 is connected to the liquid inlet end of the fourth regulating tank 40. Specifically, the reaction liquid in the intermediate tank 32 is separated into solid and liquid by a filter press, and the separated filtrate portion is transported to the fourth regulating tank 40; the third coagulation tank 43 includes: a coagulation tank and a flocculation tank. The high-concentration organic wastewater is transported to the third regulating tank 30 through a pipeline. After the water quantity and water quality are adjusted in the third regulating tank 30, the high-concentration organic wastewater is transported to the acid precipitation tank 31 through a lifting pump. A sulfuric acid solution is added to the acid precipitation tank 31 through a dosing point on the acid precipitation tank 31 to control the pH value at 2-3. After acidification, the high-concentration organic wastewater forms ink scum. After reaction, the ink scum is precipitated. After solid-liquid separation, the organic matter concentration in the separated reaction liquid is greatly reduced, which can effectively reduce the organic matter concentration in the high-concentration organic wastewater. The reaction liquid at the separation is further transported to the intermediate tank 32, and sodium hydroxide solution is added to the intermediate tank 32 through a dosing point on the intermediate tank 32. The pH value is controlled at 8-9. After reaction, the reaction liquid is dehydrated by a filter press, and the filtrate is transported to the fourth regulating tank 40 of the low-concentration organic wastewater pretreatment mechanism; the low-concentration organic wastewater in the circuit board wastewater is directly transported to the fourth regulating tank 40 through a pipeline, and the water quantity and water quality are adjusted in the fourth regulating tank 40. After adjustment, the low-concentration organic wastewater is transported to the acid adjustment catalyst mixing tank 41 through the lifting pump, and sulfuric acid solution and ferrous sulfate solution are added to the acid adjustment catalyst mixing tank 41 through the dosing point on the acid adjustment catalyst mixing tank 41. After sufficient reaction, the reaction liquid is transported to the oxidation tank 42 through the hole, and hydrogen peroxide is added to the oxidation tank 42 through the dosing point on the oxidation tank 42 for chemical oxidation to remove organic matter. After sufficient reaction, the reaction liquid is transported to the coagulation tank of the third coagulation tank 43 through the hole, and the coagulant PAC solution is added to the coagulation tank to cause coagulation reaction. After sufficient reaction, the reaction liquid is transported to the flocculation tank of the third coagulation tank 43 through the hole, and the flocculant PAM solution is added to the flocculation tank through the dosing point on the flocculation tank. After sufficient reaction, the flocculation liquid is transported to the third sedimentation tank 44 for sedimentation operation. After the sedimentation operation is completed, the heavy metals and part of COD in the low-concentration wastewater are removed, and the precipitated slag is discharged to the waste slag treatment equipment, and the upper liquid part is transported to the comprehensive wastewater treatment mechanism.

[0036] The copper-containing wastewater pretreatment mechanism comprises: a fifth regulating tank 50, a second pH adjustment tank 51, a fourth coagulation tank 52, and a fourth sedimentation tank 53 which are sequentially connected in series. The fourth coagulation tank 52 comprises: a coagulation tank and a flocculation tank. The copper-containing wastewater is transported to the fifth regulating tank 50 through a pipeline. After the water quantity and quality are adjusted in the fifth regulating tank 50, the copper-containing wastewater is transported to the second PH adjustment tank 51 through a lifting pump. Sodium hydroxide is added to the second PH adjustment tank 51 through a dosing point on the second PH adjustment tank 51 to control the PH value at 8-9. After the PH value adjustment is completed, the mixed liquid is transported to the coagulation tank of the fourth coagulation tank 52 through a hole. A coagulant PAC solution is added to the coagulation tank to cause a coagulation reaction. After sufficient reaction, the reaction liquid is transported to the flocculation tank of the fourth coagulation tank 52 through a hole. A flocculant PAM solution is added to the flocculation tank through a dosing point on the flocculation tank. After sufficient reaction, the flocculation liquid is transported to the fourth sedimentation tank 53 for sedimentation operation. After the sedimentation operation is completed, the copper-containing substances in the copper-containing wastewater are removed, and the precipitated slag is discharged to the waste slag treatment equipment, and the upper liquid part is transported to the comprehensive wastewater treatment mechanism.

[0037] The comprehensive wastewater treatment mechanism includes: a comprehensive wastewater regulating tank 60, a primary sedimentation regulating tank, a hydrolysis acidification tank 65, a contact oxidation tank 66, a fifth coagulation tank 67, and a fifth sedimentation tank 68 connected in series in sequence, and a pH adjustment tank 69 is also provided on one side of the hydrolysis acidification tank 65; the liquid outlets of the first sedimentation tank 14, the second sedimentation tank 24, the third sedimentation tank 44, and the fourth sedimentation tank 53 are all connected to the liquid inlet of the comprehensive wastewater regulating tank 60 through pipelines; the primary sedimentation regulating tank includes: a primary sedimentation pH adjustment tank 61, a primary sedimentation coagulation tank 62, a primary sedimentation flocculation tank 63, and a primary sedimentation tank 64 connected in series in sequence, and the liquid outlet of the primary sedimentation tank 64 is connected to the liquid inlet of the hydrolysis acidification tank 65; the fifth coagulation tank 67 includes: a coagulation tank and a flocculation tank. After the above treatment, the comprehensive wastewater transported to the comprehensive wastewater regulating tank 60 basically does not contain copper, and the COD and ammonia nitrogen concentrations in the wastewater are low. After the water quantity and quality are adjusted in the comprehensive wastewater regulating tank 60, the comprehensive wastewater is transported to the primary sedimentation regulating tank through a lifting pump. After the pH value is adjusted, the primary sedimentation coagulation, primary sedimentation flocculation, and primary sedimentation are carried out in the primary sedimentation regulating tank, and then the comprehensive wastewater is transported to the hydrolysis acidification tank 65, the contact oxidation tank 66, and the fifth coagulation tank 67 through the hole in sequence for reaction. Specifically, the hydrolysis acidification tank 65 The hydrolysis biofiller and hydrolysis acidification microorganisms are arranged in the hydrolysis biofiller. The hydrolysis acidification microorganisms are attached to the hydrolysis biofiller and form a hydrolysis acidification biofilm. After the comprehensive wastewater passes through the hydrolysis acidification tank 65 for hydrolysis acidification reaction, the insoluble organic matter in the wastewater can be hydrolyzed into soluble organic matter, and the macromolecular substances that are difficult to biodegrade can be converted into small molecular substances that are easy to biodegrade. After the reaction in the hydrolysis acidification tank 65, the hydrolysis acidification reaction liquid is transported to the contact oxidation tank 66 through the hole. The contact aerobic tank 66 Aerobic biological fillers and aerobic microorganisms are arranged inside. The aerobic microorganisms are attached to the surface of the oxidizing biological fillers and form an aerobic biofilm. After the hydrolysis acidification liquid enters the contact aerobic tank 66, it contacts the aerobic biofilm and an oxidation reaction occurs. After sufficient reaction, part of the reaction liquid flows back to the hydrolysis acidification tank 65. The hydrolysis acidification tank 65 in the present invention also serves as a denitrification reaction tank. The reaction liquid that flows back is denitrified to remove total nitrogen. After the reaction liquid passes through the above-mentioned hydrolysis acidification tank 65 and the contact aerobic tank 55, the organic matter that hinders the precipitation of copper in the wastewater is removed. After the reaction in the fifth coagulation tank 67 (the specific reaction operation process can refer to the operation of the reaction process in the above-mentioned first coagulation tank), the flocculated liquid in the fifth coagulation tank 67 is transported to the fifth sedimentation tank 68. After precipitation in the fifth sedimentation tank 68, it is filtered through a quartz filter, and the copper is removed to the greatest extent, and can be discharged to the municipal pipe network. Various toxic substances in the circuit board wastewater are removed, thereby reducing pollution to the environment.

[0038] Specifically, in the present embodiment, the material of the hydrolytic biological filler and the aerobic biological filler is a blend of vinylon and polypropylene, the hydrolytic acidifying microorganism is of the genus Clostridium, and the aerobic microorganism is of the genus Active Bacillus; on the other hand, in the present embodiment, two comprehensive wastewater treatment mechanisms are provided, and the comprehensive wastewater regulating tanks 60 of the two comprehensive wastewater treatment mechanisms are concentrated together, and the two comprehensive wastewater treatment mechanisms can simultaneously treat the comprehensive wastewater, and when the amount of comprehensive wastewater is small, one wastewater treatment mechanism can be idle as a standby, which can effectively improve the treatment efficiency of the comprehensive wastewater treatment mechanism.

[0039] Specifically, in this embodiment, the coagulation tank, flocculation tank, chlorination tank 22, acid precipitation tank 31, oxidation tank 42, first PH adjustment tank 21, second PH adjustment tank 51, primary PH adjustment tank 61, network breaking tank, primary coagulation tank 62, and primary flocculation tank 63 are all provided with a stirrer 7. The stirrer 7 is used for stirring during the reaction in each reaction tank, so that each compound in the wastewater is in rapid and full contact with the reaction reagent, thereby accelerating the reaction speed in each reaction tank.

[0040] Specifically, in this embodiment, the coagulation tank, flocculation tank, chlorination tank 22, acid precipitation tank 31, oxidation tank 42, first PH adjustment tank 21, second PH adjustment tank 51, primary PH adjustment tank 61, decomposition tank, primary coagulation tank 62, and primary flocculation tank 63 are all provided with automatic control process instruments, and the reactions in the above-mentioned reaction tanks can be automatically controlled by the automatic control process instruments.

[0041] Specifically, in the present embodiment, the first sedimentation tank 14, the second sedimentation tank 24, the third sedimentation tank 44, the fourth sedimentation tank 53, the fifth sedimentation tank 68, and the primary sedimentation tank 64 all include a sedimentation area 80 and a mud discharge area 81, and an inlet weir 82 and an outlet weir 83 are respectively provided at both ends of the sedimentation area 80; a honeycomb inclined pipe 84 is provided in the sedimentation area 80, and a water retaining plate 85 is provided on the side of the honeycomb inclined pipe 84 close to the inlet weir 82; a mud hopper 86 is provided in the mud discharge area 81, and a mud discharge port 87 connected to the mud hopper 86 is provided on one side of the bottom of the mud discharge area 81, and the mud hopper 86 is provided on the lower side of the honeycomb inclined pipe 84. The flocculation liquid of each flocculation tank and the primary flocculation tank 63 enters the sedimentation area 80 through the water inlet weir 82, and the water retaining plate 85 pours the flocculation liquid into the lower side of the honeycomb inclined tube 84. Part of the settled sediment directly enters the mud bucket 86 and is discharged through the mud outlet 87. The unsettled part enters the honeycomb inclined tube 84 from the bottom end of the honeycomb inclined tube 84 along with the flocculation liquid, so that the flocculation liquid is in a state of flowing from bottom to top in the sedimentation area 80, and reaches the top of the honeycomb inclined tube 84 from bottom to top. At this time, the large particles in the flocculation liquid will gradually settle and adhere to the inner wall of the honeycomb inclined tube 84, and under the action of gravity, will flow into the mud bucket 86, while the liquid part will reach the upper side of the honeycomb inclined tube 84 and reach the water outlet weir 83, and be further discharged. The use of the honeycomb inclined tube 84 for sedimentation is equivalent to increasing the sedimentation area several times, further improving the sedimentation rate, and making the sedimentation effect better.

[0042] Specifically, in this embodiment, an integrated device for treating circuit board wastewater in the present invention is provided with three layers, wherein the first regulating tank 10, the second regulating tank 20, the third regulating tank 30, the fourth regulating tank 40, the fifth regulating tank 50, and the comprehensive wastewater regulating tank 60 are all arranged on the lower layer, and an emergency tank 90 is also arranged on one side of the comprehensive wastewater regulating tank 60; the network breaking tank, the first coagulation tank 13, the first sedimentation tank 14, the first PH adjustment tank 21, the chlorination tank 22, the second coagulation tank 23 The second sedimentation tank 24, the acid precipitation tank 31, the intermediate tank 32, the acid adjustment catalyst mixing tank 41, the oxidation tank 42, the third coagulation tank 43, the third sedimentation tank 44, the second PH adjustment tank 51, the fourth coagulation tank 52, and the fourth sedimentation tank 53 are all arranged in the middle layer, and a drug adding room is also arranged in the middle layer structure. The comprehensive wastewater regulating tank 60 of the two comprehensive wastewater treatment institutions is arranged in the lower structure, and the two comprehensive wastewater treatment institutions are respectively arranged in the middle layer and the upper layer, and a fan room 92 and a control room 93 are also arranged in the upper structure.

[0043] Specifically, in this embodiment, plant supports and support nets are provided on the upper sides of the first sedimentation tank 14, the second sedimentation tank 24, the third sedimentation tank 44, the fourth sedimentation tank 53, the fifth sedimentation tank 68, the primary sedimentation tank 64, the hydrolysis acidification tank 65, and the contact oxidation tank 66 for planting aquatic plants. These aquatic plants have huge root systems, which provide a healthy habitat for the growth of microorganisms and other organisms, such as algae, protozoa, zooplankton, worms, snails, clams, etc., forming an ecosystem that can absorb ammonia nitrogen in wastewater, which is beneficial to the treatment of ammonia nitrogen in wastewater. In summary, the present invention provides an integrated device for treating circuit board wastewater, wherein the complex copper wastewater is subjected to complex breaking and copper removal operations by a complex copper wastewater pretreatment mechanism to remove complex copper in the complex copper wastewater, and the ammonia nitrogen ions in the copper ammonia wastewater are removed by a copper ammonia wastewater pretreatment mechanism, and a copper removal operation is further performed after the ammonia nitrogen ions are removed. This process can reduce the burden of subsequent ammonia nitrogen treatment, and the high-concentration organic wastewater can be converted into low-concentration organic wastewater by an organic wastewater pretreatment mechanism, and the heavy metals in the low-concentration organic wastewater are further removed, and the COD content in the low-concentration organic wastewater is reduced at the same time, thereby reducing the burden of subsequent COD treatment, and the copper in the copper-containing wastewater is removed by a copper-containing wastewater pretreatment mechanism, so that the comprehensive wastewater transported to the comprehensive wastewater treatment mechanism is substantially free of copper, thereby avoiding the non-complexed copper from being complexed again after mixing with other wastewaters, resulting in an increase in the cost of complex breaking and dosing, and avoiding the high copper content from causing subsequent biochemical reactions. Inhibition (hydrolysis acidification and aerobic biochemistry), after being treated by the comprehensive wastewater treatment mechanism, COD substances and nitrogen-containing substances (ammonia nitrogen and total nitrogen) in the comprehensive wastewater are further removed to meet the wastewater discharge standard; the present invention performs diversion and classification collection according to the differences in the type, nature and concentration of wastewater generated in the circuit board production process, first performs pretreatment operations, and finally merges together for treatment, thereby reducing the fluctuation of wastewater quality, effectively improving the treatment efficiency of circuit board wastewater, reducing the mutual interference of various pollutants, simplifying the treatment process of circuit board wastewater, reducing the difficulty of treatment, and there is no need to design a wastewater treatment equipment for each type of wastewater, and directly adopt an integrated equipment for treating circuit board wastewater in the present invention, which effectively reduces the production cost; at the same time, according to the water quality of the wastewater effluent, on the premise of meeting the discharge standards, the type and amount of medicine for each type of wastewater can be optimized in a targeted manner to save operating costs.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated device for treating circuit board wastewater, characterized in that: include: A complex copper wastewater pretreatment mechanism, a copper ammonia wastewater pretreatment mechanism, an organic wastewater pretreatment mechanism, a copper-containing wastewater pretreatment mechanism, and a comprehensive wastewater treatment mechanism connected to the complex copper wastewater pretreatment mechanism, the copper ammonia wastewater pretreatment mechanism, the organic wastewater pretreatment mechanism, and the copper-containing wastewater pretreatment mechanism; The complex copper wastewater pretreatment mechanism comprises: a first regulating tank, a complex breaking tank, a first coagulation tank, and a first sedimentation tank which are arranged in series in sequence; The copper ammonia wastewater pretreatment mechanism comprises: a second regulating tank, a first pH adjustment tank, a chlorination tank, a second coagulation tank, and a second sedimentation tank connected in series in sequence; The organic wastewater pretreatment mechanism comprises: a high-concentration organic wastewater pretreatment mechanism and a low-concentration organic wastewater pretreatment mechanism, wherein the high-concentration organic wastewater pretreatment mechanism comprises: a third regulating tank, an acid precipitation tank, and an intermediate tank connected in series in sequence; the low-concentration organic wastewater pretreatment mechanism comprises: a fourth regulating tank, an acid adjustment catalyst mixing tank, an oxidation tank, a third coagulation tank, and a third sedimentation tank connected in series in sequence, and the liquid outlet of the intermediate tank is connected to the liquid inlet of the fourth regulating tank; The copper-containing wastewater pretreatment mechanism comprises: a fifth regulating tank, a second pH adjustment tank, a fourth coagulation tank, and a fourth sedimentation tank connected in series in sequence; The comprehensive wastewater treatment mechanism comprises: a comprehensive wastewater regulating tank, a primary sedimentation regulating tank, a hydrolysis acidification tank, a contact oxidation tank, a fifth coagulation tank, and a fifth sedimentation tank connected in series in sequence; the liquid outlets of the first sedimentation tank, the second sedimentation tank, the third sedimentation tank, and the fourth sedimentation tank are all connected to the liquid inlet of the comprehensive wastewater regulating tank through pipelines; The primary sedimentation regulating tank comprises: a primary sedimentation pH adjustment tank, a primary sedimentation coagulation tank, a primary sedimentation flocculation tank, and a primary sedimentation tank which are sequentially connected in series, and the liquid outlet end of the primary sedimentation tank is connected to the liquid inlet end of the hydrolysis acidification tank; The network breaking pool includes: a primary network breaking pool and a secondary network breaking pool connected to the primary network breaking pool.

2. The integrated equipment for treating circuit board wastewater according to claim 1, characterized in that: The first coagulation tank, the second coagulation tank, the third coagulation tank, the fourth coagulation tank and the fifth coagulation tank all include a coagulation tank and a flocculation tank, and the coagulation tank is connected to the flocculation tank.

3. The integrated equipment for treating circuit board wastewater according to claim 2, characterized in that: Agitators are provided in the coagulation tank, flocculation tank, chlorination tank, acid precipitation tank, oxidation tank, first pH adjustment tank, second pH adjustment tank, primary pH adjustment tank, decomposition tank, primary coagulation tank and primary flocculation tank.

4. The integrated equipment for treating circuit board wastewater according to claim 1, characterized in that: The first sedimentation tank, the second sedimentation tank, the third sedimentation tank, the fourth sedimentation tank, the fifth sedimentation tank and the primary sedimentation tank all include a sedimentation area and a sludge discharge area, and an inlet weir and an outlet weir are respectively arranged at both ends of the sedimentation area.

5. The integrated equipment for treating circuit board wastewater according to claim 4, characterized in that: A honeycomb inclined tube is arranged in the sedimentation area, and a water retaining plate is arranged on the side of the honeycomb inclined tube close to the water inlet weir; a plurality of mud buckets are arranged in the mud discharge area, and a mud discharge port connected to the mud bucket is arranged on the bottom side of the mud discharge area, and the plurality of mud buckets are arranged on the lower side of the honeycomb inclined tube.

6. The integrated equipment for treating circuit board wastewater according to claim 1, characterized in that: The hydrolysis and acidification tank is provided with hydrolysis biological fillers and hydrolysis and acidification microorganisms. The hydrolysis and acidification microorganisms are attached to the hydrolysis biological fillers and form a hydrolysis and acidification biofilm.

7. The integrated equipment for treating circuit board wastewater according to claim 6, characterized in that: Aerobic biological fillers and aerobic microorganisms are arranged in the contact oxidation tank. The aerobic microorganisms are attached to the surface of the aerobic biological fillers and form an aerobic biofilm.

8. The integrated equipment for treating circuit board wastewater according to claim 7, characterized in that: The material of the hydrolytic biological filler and the aerobic biological filler is a blend of vinylon and polypropylene, the hydrolytic acidifying microorganism is of the genus Clostridium or Longinella, and the aerobic microorganism is of the genus Mobiluncus or Pseudomonas or Alcaligenes.

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