CN107827210B - Sewage treatment method based on plate-frame type filter pressing electrolysis integrated special sewage treatment equipment - Google Patents
Sewage treatment method based on plate-frame type filter pressing electrolysis integrated special sewage treatment equipment Download PDFInfo
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- CN107827210B CN107827210B CN201711261023.8A CN201711261023A CN107827210B CN 107827210 B CN107827210 B CN 107827210B CN 201711261023 A CN201711261023 A CN 201711261023A CN 107827210 B CN107827210 B CN 107827210B
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- 239000010865 sewage Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 21
- 239000010802 sludge Substances 0.000 claims abstract description 126
- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 239000000126 substance Substances 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 7
- 238000005189 flocculation Methods 0.000 claims description 7
- 230000016615 flocculation Effects 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims description 6
- 230000005684 electric field Effects 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 230000033116 oxidation-reduction process Effects 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims 1
- 238000003672 processing method Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 15
- 238000007906 compression Methods 0.000 abstract description 15
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000009297 electrocoagulation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
Abstract
The invention discloses a special plate-frame type filter-pressing electrolysis integrated sewage treatment device and a sewage treatment method based on the same; belongs to the technical field of sewage treatment; the technical key point of the device comprises a bracket, wherein cross beams are respectively arranged on two sides of the bracket along the horizontal direction, a thrust plate and a compression plate are arranged on the cross beams, and the compression plate is connected with a compression device; a plurality of filter-pressing electrode assemblies which are mutually matched and composed of an anode filter frame unit and a cathode filter plate unit are movably arranged on a cross beam between the compression plate and the thrust plate; the anode of the direct current power supply is connected with the anode filter frame unit, and the cathode of the direct current power supply is connected with the cathode filter plate unit; the lower part of the anode filter frame is connected with a sludge concentration control assembly; the invention aims to provide the plate-frame type filter-pressing electrolysis integrated sewage treatment special equipment which has a compact structure, good treatment effect and easy operation and the sewage treatment method based on the equipment; is used for sewage treatment.
Description
Technical Field
The invention relates to sewage treatment equipment, in particular to plate-frame type filter pressing electrolysis integrated special sewage treatment equipment. The invention also relates to a sewage treatment method based on the equipment.
Background
The prior technology of industrial sewage and slag-water separation has a lot of equipment, and the filter pressing and the electrolysis are separately carried out, namely, the electrolysis treatment is carried out firstly, and then the filter pressing is carried out to separate the slag from the water. The electrolytic method is considered to be a flexible, rapid and efficient treatment method, and is generally used for treating wastewater with high toxicity and difficult treatment, such as printing and dyeing, pharmacy, chemical industry, pesticide, heavy metal and the like, under the conditions of normal temperature, normal pressure and lower suspended matters. The main principle is that toxic and harmful substances (including organic matters and inorganic matters) in the sewage are destroyed and converted into sediment or other nontoxic and harmless substances by utilizing the functions of oxidation-reduction reaction, electrocoagulation, electric neutralization and the like on the electrode. The plate-and-frame filter press is a high-efficiency common device for separating slag from water. Such as the Chinese patent ZL2016110915557. The sludge concentration in the plate-and-frame filter press can be very high, the plate-and-frame filter press and the electrolytic integrated sewage treatment machine are made by organically combining the plate-and-frame filter press and the electrolytic integrated sewage treatment machine, and the novel technology and equipment are made by fully playing the adsorption and flocculation effects of high-concentration sludge in the sewage treatment process.
Disclosure of Invention
The former object of the present invention is to provide a plate-frame type filter-pressing electrolysis integrated sewage treatment special device which has compact structure, good treatment effect and easy operation, and aims at overcoming the defects of the prior art.
The latter aim of the invention is to provide a sewage treatment method based on the device.
The former technical scheme of the invention is realized as follows: the plate-frame type filter-pressing electrolysis integrated sewage treatment special equipment comprises a bracket, wherein cross beams are respectively arranged on two sides of the bracket along the horizontal direction, a thrust plate is arranged at one end of each cross beam, a compression plate is arranged at the other end of each cross beam, and a compression device matched with the compression plate is arranged outside the bracket at the side edge of each compression plate; a plurality of filter-pressing electrode assemblies which are mutually matched and composed of an anode filter frame unit and a cathode filter plate unit are movably arranged on a cross beam between the compression plate and the thrust plate; the anode of the direct current power supply is connected with the anode filter frame unit, and the cathode of the direct current power supply is connected with the cathode filter plate unit; the lower part of the anode filter frame is connected with a sludge concentration control component, and the rest structure of the equipment is consistent with a general plate-and-frame filter press.
In the plate-frame type filter-pressing electrolysis integrated sewage treatment special equipment, the sludge concentration control assembly consists of sludge discharge hand valves communicated with the inner cavities of the anode filter frame units, sludge discharge branch pipes connected with the sludge discharge hand valves, sludge collecting pipes connected with the sludge discharge branch pipes, a sludge concentration meter connected with the sludge collecting pipes, a sludge discharge electromagnetic valve connected to one end of the sludge collecting pipes and a sludge discharge pipe connected with the sludge discharge electromagnetic valve; the sludge concentration meter and the sludge discharge electromagnetic valve are respectively connected with an external control unit.
In the plate-frame type filter-pressing electrolysis integrated sewage treatment special equipment, the anode filter frame unit consists of an anode filter frame made of insulating materials, first support lugs arranged on two sides of the anode filter frame and matched with the cross beam, and an anode plate arranged in the anode filter frame; the anode of the direct current power supply is connected with an anode binding post at the upper end of the anode plate.
In the plate-frame type filter pressing electrolysis integrated sewage treatment special equipment, the cathode filter plate unit consists of a cathode filter plate made of metal materials, second lugs which are arranged on two sides of the cathode filter plate and matched with the cross beam, and filter cloth wrapped on the periphery of the cathode filter plate; the cathode of the direct current power supply is connected with a cathode binding post at the lower end of the cathode filter plate.
In the plate-frame type filter pressing electrolysis integrated sewage treatment special equipment, the inner side surfaces of the pressing plate and the thrust plate and the upper end surface of the cross beam are uniformly provided with the insulating material layers.
The latter technical scheme of the invention is realized as follows: a sewage treatment method based on the equipment, which comprises the following steps: (1) Pumping the sewage to be treated into a liquid inlet pipe by adopting a water pump, and allowing the sewage to enter an anode filter frame containing high-concentration sludge through a liquid inlet pore canal; (2) The anode plate and the cathode filter plate are connected with a low-voltage pulse direct current power supply or a common direct current power supply, sludge particles are induced to form bipolar electrodes with positive and negative charges under the action of an electric field, harmful substances in sewage are subjected to direct oxidation-reduction action of the electrodes and flocculation and adsorption action of charged sludge, and at the moment, the sludge plays the role of activated carbon, so that the soluble harmful substances are quickly changed into precipitated sludge in an energy-saving and efficient manner; (3) The water content of the precipitated sludge in each anode filter frame is 85% -95%, the redundant sludge is discharged to a sludge collecting pipe through a sludge discharge control valve, and the sludge in the sludge collecting pipe is automatically discharged through the cooperation of a sludge concentration meter and a sludge discharge electromagnetic valve;
(4) The treated water enters a cathode filter frame for treatment through filter cloth, and is directly filtered to obtain clear water through filter pressing, and the clear water is discharged into a filtrate pipe from a water outlet pipe.
In the sewage treatment method, the pH value of the sewage in the step (1) is 6-9.
In the sewage treatment method, the residence time of the sewage in the anode filter frame is 3-30 minutes, and the working pressure is 0.15-0.5MPa.
In the sewage treatment method, in the step (2), the voltage of the low-voltage pulse direct current power supply or the common direct current power supply is 2-48V, and the current density is 0.1-1.0A/m 2 。
In the sewage treatment method, in the step (3), the water content of the precipitated sludge in each anode filter frame is 85% -95%.
After the structure is adopted, the invention combines the sludge concentration control assembly to control the sludge concentration through the matching of the anode filter frame unit and the cathode filter plate unit, and has the following advantages compared with the prior art:
(1) The sewage reacts in the anode filter frame of the high-concentration sludge, harmful substances in the sewage are subjected to the direct oxidation-reduction action of the electrode, sludge particles are also induced into bipolar plates with positive and negative charges under the action of an electric field, the sludge particles are subjected to flocculation and adsorption of the charged sludge, the charged sludge plays the role of activated carbon, the harmful substances are quickly changed into precipitated sludge, the precipitated sludge is continuously and automatically discharged and updated, the activity of the sludge is always kept, and a series of processes of reaction, flocculation, adsorption, precipitation and filtration are synchronously completed. The sewage is treated by skillfully utilizing the sludge, and clear water is directly obtained after the treatment by filter pressing.
(2) The distance between the cathode and the anode is smaller, so that electricity is saved, the efficiency is high, the cathode and the anode are firmly fixed, and the short-circuit danger is avoided.
(3) The precipitated sludge is continuously and automatically discharged and updated, and the treatment process can keep higher and stable sludge concentration, so that higher and stable treatment efficiency can be kept, the energy and the electricity are saved, the efficiency is high, and clear water can be directly obtained through filter pressing after the treatment.
(4) If the COD before treatment is 300-5000mg/l, the removal rate after treatment can reach 60-95%. According to different water quality conditions, some of the water can be directly discharged or recycled up to the standard, and other water can be used as an efficient pretreatment technology before biochemical treatment. And clean water can be directly obtained through filter pressing after treatment.
(5) The process and the special equipment are particularly suitable for treating high-difficulty organic sewage which is difficult to biochemically treat, because the sewage is treated in a special environment; the electrolysis of high-concentration sludge with a certain pressure and the electric field environment lead some organic molecules which are difficult to be biochemically degraded to be destroyed or flocculated.
(6) The treatment cost is low, because the sludge replaces the adsorbent and the flocculant, the reagent can be not added, and if the reagent is added, the added reagent is adsorbed by the sludge and is not easy to run off, and the reagent can stay in the reaction zone for a long time to play a role, so that the reagent amount is small.
Drawings
The invention is described in further detail below in connection with the embodiments in the drawings, but is not to be construed as limiting the invention in any way.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the anode filter frame unit of the present invention;
fig. 3 is a schematic view of the structure of the cathode filter plate unit of the present invention.
In the figure: the device comprises a bracket 1, a cross beam 2, a thrust plate 3, a compression plate 4, a compression device 5, an anode filter frame unit 6, an anode filter frame 6a, a first support lug 6b, an anode plate 6c, a cathode filter plate unit 7, a cathode filter plate 7a, a second support lug 7b, a filter cloth 7c, a sludge concentration control assembly 8, a sludge discharge hand valve 8a, a sludge discharge branch pipe 8b, a sludge collecting pipe 8c, a sludge concentration meter 8d, a sludge discharge electromagnetic valve 8e, a sludge discharge pipe 8f, a water outlet pipe 9, a filtrate pipe 10 and a water outlet control valve 11.
Detailed Description
Referring to fig. 1 to 3, the sewage treatment method based on the integrated equipment for plate-frame filter pressing electrolysis comprises a bracket 1, wherein cross beams 2 are respectively arranged on two sides of the bracket 1 along the horizontal direction, a thrust plate 3 is arranged at one end of each cross beam 2, a compression plate 4 is arranged at the other end of each cross beam 2, and a compression device 5 matched with the compression plate 4 is arranged outside the bracket 1 at the side edge of the compression plate 4; a plurality of filter-pressing electrode assemblies which are mutually matched and composed of an anode filter frame unit 6 and a cathode filter plate unit 7 are movably arranged on the cross beam 2 between the compacting plate 4 and the thrust plate 3; the anode of the direct current power supply is connected with the anode filter frame unit 6, and the cathode of the direct current power supply is connected with the cathode filter plate unit 7.
Specifically, the anode filter frame unit 6 is composed of an anode filter frame 6a made of an insulating material, first lugs 6b provided on both sides of the anode filter frame 6a and fitted with the cross beam 2, and an anode plate 6c provided in the anode filter frame 6 a; the anode of the direct current power supply is connected with an anode binding post at the upper end of the anode plate 6 c. The anode filter frame is preferably made of PVC, ABS or PP and other insulating materials which are common in the art. The anode plate is preferably made of insoluble conductive material such as stainless steel.
The cathode filter plate unit 7 consists of a cathode filter plate 7a made of metal materials, second support lugs 7b which are arranged on two sides of the cathode filter plate 7a and matched with the cross beam 2, and filter cloth 7c wrapped on the periphery of the cathode filter plate 7 a; the cathode of the direct current power supply is connected with a cathode binding post at the lower end of the cathode filter plate 7 a. The cathode filter plate is preferably cast steel or cast iron.
The lower part of the anode filter frame is connected with a sludge concentration control assembly 8, the sludge concentration control assembly 8 consists of sludge discharge hand valves 8a communicated with the inner cavities of the anode filter frame units 6, sludge discharge branch pipes 8b connected with the sludge discharge hand valves 8a, sludge collecting pipes 8c connected with the sludge discharge branch pipes 8b, a sludge concentration meter 8d connected with the sludge collecting pipes 8c, a sludge discharge electromagnetic valve 8e connected with one end of the sludge collecting pipes 8c and a sludge discharge pipe 8f connected with the sludge discharge electromagnetic valve 8 e; the sludge concentration meter 8d and the sludge discharge solenoid valve 8e are connected to an external control unit, respectively. Through the sludge concentration control assembly, the water content of the sludge depth is controlled to be 80% -95%, preferably 85% -95%, so that the dissoluble harmful substances can be changed into precipitated sludge rapidly and efficiently, the sludge can be kept in a fluid state all the time, and the sludge can be discharged conveniently and rapidly through the sludge concentration control assembly, thereby realizing high efficiency and convenience in sewage treatment. In this embodiment, the outer diameter of the sludge collecting pipe should be much larger than the diameter of the water inlet channel, so that the sludge collecting pipe can have a larger sludge storage space. The sludge collecting pipe has the function of expanding the volume of the treatment chamber and is used for adjusting the concentration of sludge in the treatment chamber.
Meanwhile, the upper part of each cathode filter plate unit 7 is connected with a filtrate pipe 10 through a corresponding water outlet pipe 9, and a water outlet control valve 11 is arranged on the water outlet pipe 9. The rest structure of the device is consistent with a general plate-frame filter press.
Further, in order to avoid the whole electrification of the apparatus, insulating material layers are uniformly provided on the inner side surfaces of the hold-down plate 4 and the thrust plate 3 and on the upper end surface of the cross beam 2.
The invention discloses a sewage treatment method based on the equipment, which comprises the following steps:
(1) The pH value of the sewage to be treated is adjusted to 6-9, the sewage to be treated is pumped into a liquid inlet pipe by a water pump, a little flocculation is added before the pump, the sewage enters an anode filter frame containing high-concentration sludge through a liquid inlet channel, the residence time of the sewage in the anode filter frame is 3-30 minutes, and the pressure is 0.15-0.5Mpa. Reasonable speed can make sewage by abundant reaction reduction, absorption in the positive pole filter frame, avoid sewage speed too fast, dwell time is too short, causes sewage unable by effective treatment. Excessive pressure can result in waste of power. The technology and the equipment skillfully utilize the sludge to treat sewage.
(2) The anode plate and the cathode filter frame are connected with a low-voltage pulse direct current power supply or a common direct current power supply, the pressure in the anode filter frame is controlled to be 0.1-0.5, sludge particles are induced to bipolar particles with positive and negative charges under the action of an electric field, harmful substances in sewage are subjected to direct oxidation-reduction action of the electrode and flocculation and adsorption action of charged high-concentration sludge, and at the moment, the sludge plays the role of activated carbon, so that the soluble harmful substances are quickly changed into precipitated sludge in an energy-saving and efficient manner. The voltage of the low-voltage pulse DC power supply or the common DC power supply is lower than 48V, the preferred range is 2-48V, and the current density is 0.1-1.0A/m 2 . Because of the low applied voltage, the electrode assembly does not require expensive metals and coatings such as titanium, iridium, ruthenium, tantalum, etc. The cathode filter plate can be made of common cheap materials such as cast iron and cast steel. The anode filter frame is made of insulating nonmetallic materials such as PP, PVC and the like, and an insulating plate is not required to be specially arranged, so that the problem of short circuit between the anode and the cathode is simply and reliably solved.
(3) The water content of the precipitated sludge in each anode filter frame is 80% -95%, preferably 85% -95%, and the redundant sludge is discharged to a sludge collecting pipe through a sludge discharge control valve, and the sludge in the sludge collecting pipe is automatically discharged through the cooperation of a sludge concentration meter and a sludge discharge electromagnetic valve; to maintain a constant and high sludge concentration.
(4) The treated water enters a cathode filter frame for treatment through filter cloth, and is directly filtered to obtain clear water through filter pressing, and the clear water is discharged into a filtrate pipe from a water outlet pipe.
The above examples are provided for convenience of description of the present invention and are not to be construed as limiting the invention in any way, and any person skilled in the art will make partial changes or modifications to the invention by using the disclosed technical content without departing from the technical features of the invention.
Claims (6)
1. The sewage treatment method based on the integrated sewage treatment specialized equipment of plate-frame filter-pressing electrolysis, including the support (1), there are crossbeams (2) on the support (1) along both sides of the horizontal direction separately, there are thrust plates (3) in one end of the crossbeam (2), there are hold-down plates (4) at another end of the crossbeam (2), there are hold-down devices (5) cooperating with hold-down plates (4) outside the support (1) of the side edge of the hold-down plate (4), characterized by that, there are several filter-pressing electrode assemblies made up of positive pole filter frame unit (6) and negative pole filter plate unit (7) that cooperate with each other on the crossbeam (2) between hold-down plate (4) and thrust plate (3) activity; the anode of the direct current power supply is connected with the anode filter frame unit (6), and the cathode of the direct current power supply is connected with the cathode filter plate unit (7); the lower part of the anode filter frame is connected with a sludge concentration control assembly (8), and the rest structure of the equipment is consistent with a general plate-and-frame filter press for dehydrating and drying sludge;
the processing method comprises the following steps:
(1) Pumping the sewage to be treated into a liquid inlet pipe by adopting a water pump, and allowing the sewage to enter an anode filter frame containing high-concentration sludge through a liquid inlet pore canal; the pH value of the sewage is 6-9; the residence time of the sewage in the anode filter frame is 3-30 minutes, and the working pressure is 0.15-0.5MPa;
(2) The anode plate and the cathode filter plate are connected with a low-voltage pulse direct current power supply or a common direct current power supply, sludge particles are induced to form bipolar electrodes with positive and negative charges under the action of an electric field, harmful substances in sewage are subjected to direct oxidation-reduction action of the electrodes and flocculation and adsorption action of charged sludge, and at the moment, the sludge plays the role of activated carbon, so that the soluble harmful substances are quickly changed into precipitated sludge in an energy-saving and efficient manner; the voltage of the low-voltage pulse DC power supply or the common DC power supply is 2-48V, and the current density is 0.1-1.0A/m 2 ；
(3) The water content of the precipitated sludge in each anode filter frame is 80% -95%, the redundant sludge is discharged to a sludge collecting pipe through a sludge discharge control valve, and the sludge in the sludge collecting pipe is automatically discharged through the cooperation of a sludge concentration meter and a sludge discharge electromagnetic valve;
(4) The treated water enters a cathode filter frame for treatment through filter cloth, and is directly filtered to obtain clear water through filter pressing, and the clear water is discharged into a filtrate pipe from a water outlet pipe.
2. The sewage treatment method based on the plate-frame filter-pressing electrolysis integrated sewage treatment special equipment according to claim 1, wherein the sludge concentration control assembly (8) consists of a sludge discharge hand valve (8 a) communicated with the inner cavity of each anode filter frame unit (6), a sludge discharge branch pipe (8 b) connected with the sludge discharge hand valve (8 a), a sludge collecting pipe (8 c) connected with each sludge discharge branch pipe (8 b), a sludge concentration meter (8 d) connected with the sludge collecting pipe (8 c), a sludge discharge electromagnetic valve (8 e) connected with one end of the sludge collecting pipe (8 c) and a sludge discharge pipe (8 f) connected with the sludge discharge electromagnetic valve (8 e); the sludge concentration meter (8 d) and the sludge discharge electromagnetic valve (8 e) are respectively connected with an external control unit.
3. The sewage treatment method based on the plate-frame filter-pressing electrolysis integrated sewage treatment special equipment according to claim 1, wherein the anode filter frame unit (6) consists of an anode filter frame (6 a) made of an insulating material, first lugs (6 b) arranged on two sides of the anode filter frame (6 a) and matched with the cross beam (2) and an anode plate (6 c) arranged in the anode filter frame (6 a); the anode of the direct current power supply is connected with an anode binding post at the upper end of the anode plate (6 c).
4. The sewage treatment method based on the plate-frame type filter pressing electrolysis integrated sewage treatment special equipment according to claim 1, wherein the cathode filter plate unit (7) consists of a cathode filter plate (7 a) made of metal materials, second lugs (7 b) which are arranged at two sides of the cathode filter plate (7 a) and matched with the cross beam (2) and filter cloth (7 c) wrapped on the periphery of the cathode filter plate (7 a); the cathode of the direct current power supply is connected with a cathode binding post at the lower end of the cathode filter plate (7 a).
5. A sewage treatment method based on a plate-frame filter-pressing electrolysis integrated sewage treatment special equipment according to claim 1 or 3, characterized in that an insulating material layer is uniformly arranged on the inner side surfaces of the pressing plate (4) and the thrust plate (3) and on the upper end surface of the cross beam (2).
6. The sewage treatment method based on the plate-frame type filter-pressing electrolysis integrated special sewage treatment equipment according to claim 1, wherein in the step (3), the water content of the precipitated sludge in each anode filter frame is 85% -95%.
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| CN201711261023.8A CN107827210B (en) | 2017-12-04 | 2017-12-04 | Sewage treatment method based on plate-frame type filter pressing electrolysis integrated special sewage treatment equipment |
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| CN201711261023.8A CN107827210B (en) | 2017-12-04 | 2017-12-04 | Sewage treatment method based on plate-frame type filter pressing electrolysis integrated special sewage treatment equipment |
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| CN107827210B true CN107827210B (en) | 2024-03-26 |
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| CN113491890B (en) * | 2020-04-07 | 2022-06-10 | 北京建筑大学 | Plate frame filter-pressing electric deep dehydration filter plate and integrated device using same |
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| CN105776684A (en) * | 2016-05-16 | 2016-07-20 | 黄名钟 | Urban sewage treatment and resource recycling method |
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| CN207827933U (en) * | 2017-12-04 | 2018-09-07 | 广东绿园环保科技有限公司 | A kind of plate and frame press filtration electrolysis integrated sewage disposal special equipment |
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| CN205391838U (en) * | 2016-02-18 | 2016-07-27 | 河南鸿昇环保设备制造有限公司 | Mud compression system |
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