CN202016933U - Sewage treatment device - Google Patents

Abstract

The utility model provides a sewage processor, which comprises a shell, a support plate, a composite filler in the shell, a water inlet pipe, a water outlet pipe, a perforated aerator and an air supply device. The central cylinder of the micro-electrolytic filler and the micro-electrolytic filler, the bottom of the micro-electrolytic filler and the central cylinder are located on the support plate, and the water inlet pipe is connected to the water distributor; there is an annular upward open water collection tank around the upper part of the central cylinder, One end of the water outlet pipe is connected to the water collection tank, and the other end is led out through the shell; a central guide tube with openings at the upper and lower ends is connected under the support plate, and a drug feeder is arranged in the center guide tube, which is connected with the drug feeder The dosing tube is led out from the upper part of the casing through the central cylinder; the composite filler in the casing surrounds the central cylinder and is divided into upper and lower layers supported by the support plate. Its structure is reasonable and compact, organically combining micro-electrolysis technology with biological treatment technology and filtration technology, the effluent water quality is good and the efficiency is high.

Description

sewage processor

technical field

The utility model belongs to the technical field of sewage treatment, in particular to a sewage processor.

Background technique

The treatment of industrial sewage is a hot spot of general concern. Due to the wide variety of industrial sewage, large changes in water volume, high water quality concentration, and complex components, it is difficult to treat. At present, most of the combined treatment processes of conventional technologies are used. These processes often have a long process, high energy consumption in the transfer process, and high operating costs, making it difficult to achieve the ideal treatment effect. In particular, high-salt and high-concentration organic sewage has always been a difficult point to deal with. The organic pollutants in sewage have high concentration, stable structure, and poor biochemical properties. It is difficult to achieve standard discharge by conventional processes, and the treatment cost is high. big pressure. In addition, the rapid transformation of products due to market demand has made the sewage situation more complicated, and made the original sewage treatment technology and facilities worse. Therefore, there is an urgent need for efficient and practical sewage treatment new technology products.

In the treatment technology of refractory industrial sewage, micro-electrolysis technology is being paid more and more attention. It is currently used in the treatment of printing and dyeing, electroplating, papermaking, medicine, nitrobenzene, aniline, printed circuit boards, coking, animal husbandry, hydrogen peroxide chemical industry, petrochemical industry, rubber, etc. It is an ideal technology for auxiliary chemical industry and benzene ring-containing chemical sewage. It has its unique features in removing the chroma of high-concentration sewage and reducing COD. Biological treatment technology is a mature technology that uses microbial oxidation and adsorption to remove pollutants. For this reason, how to organically combine micro-electrolysis technology, biological treatment technology and filtration technology to form a new type of sewage processor through reasonable structural design, maximize their respective advantages, and make the effluent water quality good, impact-resistant, adaptable Strong, easy to operate and manage, economical and practical. This is a technical problem faced by this technical field.

Contents of the invention

The utility model aims at the problems existing in the prior art, and provides a sewage processor, which has a reasonable and compact structure, organically combines micro-electrolysis technology, biological treatment technology and filtration technology, and has good effluent quality, high treatment efficiency and impact resistance , strong adaptability, low cost, simple operation and easy maintenance.

The utility model adopts the following technical scheme: a sewage processor, including a shell, a support plate, a composite filler inside the shell, a water inlet pipe connected to the shell outside the shell, a water outlet pipe and an air supply device, and a connection between the support plate and the composite filler. A perforated aerator is arranged between them, and the perforated aerator is connected with an external air supply device by an air supply pipe. The filler, the micro-electrolytic filler and the opening at the bottom of the central cylinder are located on the support plate, and the water inlet pipe is introduced into the central cylinder from the upper part of the shell to connect with the water distributor; The central cylinder is higher than the upper part of the composite filler. One end of the outlet pipe is connected to the sump, and the other end of the outlet pipe is led out through the shell; a central guide tube is arranged under the support plate, and the upper and lower ends of the center guide tube are Opening, the upper end of the central guide tube is connected to the support plate, a dosing device is installed in the central guide tube, and a dosing tube connected to the dosing device passes upward through the central tube and leads out from the upper part of the shell, and is connected with the external dosing equipment connected; the composite filler in the shell surrounds the central cylinder and is divided into upper and lower layers supported by the support plate.

A further improvement to the above technical solution: the micro-electrolytic filler is an iron-carbon micro-electrolytic filler.

A further improvement to the above technical solution: the lower layer of the composite filler surrounding the central cylinder in the housing is biological filler, and the upper layer is high-density fiber filaments.

Further improvement to the above technical solution: the perforated aerator is ring-shaped, surrounds the central cylinder, and is located below the biological filler in the lower layer, and an air valve is set on the air supply pipe connected to the perforated aerator.

A further improvement to the above technical solution: the dosing device is in the form of an annular perforated tube.

A further improvement to the above technical solution: the shell is a circular cylinder, the upper part is cylindrical, and the lower part is conical. Supported by 4 support frames.

A further improvement to the above technical solution: the tip of the bottom of the shell is connected to a mud discharge pipe, the mud discharge pipe is connected to a vent pipe, the vent pipe is provided with a vent solenoid valve, and the mud discharge pipe is provided with a mud discharge solenoid valve. During normal operation, the sludge discharge solenoid valve and the vent solenoid valve are closed, and the sludge discharge solenoid valve is opened only when the sludge needs to be discharged; during maintenance, the sludge discharge solenoid valve is closed, and the vent solenoid valve is opened.

Compared with the prior art, the utility model has the following advantages and positive effects:

The sewage processor of the utility model has scientific design and reasonable structure, and organically combines micro-electrolysis technology, flocculation sedimentation technology, biological iron method technology, biofilm treatment and filtration technology, so it has the following advantages:

1. High efficiency and low cost: the utility model completes multiple functions such as electrochemistry, oxidation-reduction, physical adsorption, flocculation precipitation, biological adsorption, biological oxidation and filtration of sewage in the same tank, with fast reaction rate and high treatment efficiency ,low cost;

2. It has a wide range of applications, such as: refractory and degradable organic substances containing even fluorine, carbon double bonds, nitro groups, and halogenated structures have good degradation effects;

3. Micro-electrolytic packing has long service life, low investment cost, convenient operation and maintenance, low operating cost and stable treatment effect. Only a small amount of micro-electrolysis reagent is consumed in the process. The micro-electrolyte only needs to be added regularly without replacement, and it can be added directly without activation;

4. After the sewage is treated by micro-electrolysis, the original ecological ferrous or iron ions will be formed in the water, which has a better coagulation effect than ordinary coagulants, and there is no need to add coagulants such as iron salts, and the removal rate of chroma and COD High, and will not cause secondary pollution to water; at the same time, it can greatly improve the biodegradability of sewage. It can achieve the effect of chemical precipitation and phosphorus removal, and can also remove heavy metals through reduction;

5. Small aeration volume and low power consumption;

6. Reasonable and compact structure, low investment and small footprint

7. Strong impact load resistance;

8. It is easy to install, easy to operate and manage, and convenient for later reconstruction and expansion.

9. It can be used not only for new sewage treatment projects, but also for the transformation of high-concentration organic sewage treatment projects that have not reached the standard.

Description of drawings

Fig. 1 is a connection structure diagram of the utility model sewage processor.

In the figure: 1. Water inlet pipe; 2. Shell; 3. High-density fiber filament; 4. Biological filler; 5. Air supply pipe; 6. Air valve; 7. Water distributor; 8. Iron-carbon micro-electrolytic filler; 9. Center cylinder; 10. Dosing device; 11. Center guide tube; 12. Support frame; 13. Dosing pipe; 14. Water collection tank; 15. Outlet pipe; 16. Perforated aerator; 17. Support plate; 18. Vent solenoid valve; 19. Vent pipe; 20. Mud discharge solenoid valve; 21. Mud discharge pipe.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Fig. 1, an embodiment of a sewage treatment device of the present invention, the shell 2 is made of a steel plate with a certain thickness (such as: carbon steel plus glass fiber reinforced plastic or stainless steel) to make a circular cylinder, the upper part is cylindrical, and the lower part is conical shaped and supported by a base. A support plate 17 is arranged in the cylindrical shape of the housing 2, four support frames 12 evenly distributed are arranged at the bottom of the support plate 17, the support frame 12 upper ends are connected with the support plate 17, and the lower ends are connected with the housing 2 bottoms.

A central cylinder 9 is arranged in the middle of the housing 2, the upper and lower ends of the central cylinder 9 are open, and the central cylinder 9 is equipped with iron-carbon micro-electrolytic fillers 8 or other micro-electrolytic fillers of similar nature, and placed on the support plate 17 . There is a permeable hole on the support plate 17, and the permeable aperture of the part covered by the lower end of the central cylinder 9 is small, and the permeable aperture around the lower end of the central cylinder 9 is large. A water distributor 7 is arranged above the iron-carbon micro-electrolysis filler 8 in the central cylinder 9, the water distributor 7 is of annular perforated pipe type or spray type, and one end of the water inlet pipe 1 connected to the water distributor 7 leads out of the housing 2 outside, and set on the top of the housing 2. The annular space in the housing 2 is equipped with composite fillers, which surround the central cylinder 9 and are divided into upper and lower layers. The upper layer is high-density fiber filaments 3 , and the lower layer is biological fillers 4 , which are supported by support plates 17 . Above the high-density fiber filament 3, an annular upwardly open water collection tank 14 is arranged around the central cylinder 9, and one end of a water outlet pipe 15 connected to the water collection tank 14 leads out of the housing 2, and is arranged on the cylindrical body of the housing 2. on the side wall. An annular perforated aerator 16 is arranged at the bottom of the biological filler 4 and surrounds the central cylinder 9 . The perforated aerator 16 is connected with an external air supply device through an air supply pipe 5 . The air supply equipment of the air supply device adopts an air compressor, and an air valve 6 is arranged on the air supply pipe 5, which can provide an oxygen source for microorganisms, and play a role in stirring and updating, and adjust the air supply according to different needs.

Below the support plate 17, a center guide tube 11 is arranged, the upper and lower ends of the center guide tube 11 are open, the upper end of the center guide tube 11 is connected with the support plate 17, and a drug feeder 10 is arranged in the center guide tube 11, and the drug dosing Device 10 is an annular perforated tube type. A dosing tube 13 connected to the dosing device 10 passes upwards through the central cylinder 9 and leads out from the upper part of the casing 2, and is connected with an external dosing device.

A mud discharge pipe 21 is connected to the tip of the bottom of the housing 2, and a vent pipe 19 is connected to the mud discharge pipe 21. A vent solenoid valve 18 is arranged on the vent pipe 19, and a mud discharge solenoid valve 20 is arranged on the mud discharge pipe 21.

The processing mechanism of the utility model sewage processor:

A. redox action

When the sewage flows through the iron-carbon micro-electrolytic filler 8, due to the electrode potential difference between Fe and C, countless micro-battery systems will be formed, and an electric field can be formed in its action space without external power supply. Iron is the anode, carbon is the cathode, and the new ecological ferrous ions produced by the anode reaction have a strong reducing ability, which can reduce some organic substances, and can also make some unsaturated groups (such as carboxyl-COOH, azo group The double bond of -N=N-) is opened to decompose some refractory cyclic and long-chain organic compounds into easily biodegradable small molecule organic compounds to improve biodegradability, and the reduction of Fe ²⁺ can reduce toxic compounds or ions Substances with little or no toxicity. The cathode reaction produces a large amount of new ecological [H] and [O]. Under acidic conditions, these active components can undergo redox reactions with many components in sewage, causing organic macromolecules to undergo chain scission and degradation, thereby eliminating Improve the chromaticity of organic sewage and improve the biodegradability of sewage.

B. Flocculation

The divalent and trivalent iron ions produced by the micro-battery are good flocculants, especially the nascent ferrous ions have higher adsorption-flocculation activity, and there is no need to add coagulants such as iron salts. Adjusting the pH of sewage can turn iron ions into flocculent precipitates of hydroxides, absorbing suspended or colloidal tiny particles and organic polymers in sewage, which can further reduce the chroma of sewage, and at the same time remove some organic pollutants to make sewage get cleansed.

C. Biological iron effect

In the microbattery reaction, ferrous iron and ferric iron undergo redox reactions under certain conditions to transform into each other. Studies have found that certain bacteria can obtain their nourishment from chemical reactions of iron. These bacteria can consume compounds such as acetic acid and lactic acid produced by microbial decay during the conversion of ferric iron to ferrous iron. It has also been confirmed that these bacteria are much stronger than methanogens and sulfate-reducing bacteria in decomposing organic matter. As long as there is iron, iron-reducing bacteria always first reduce ferrous iron to ferrous iron, and drive other bacteria to multiply.

The redox reaction of ferrous iron and ferric iron can promote the degradation of organic suspended matter by bacteria. Most of the biological oxidation reactions are dehydrogenation. The organic matter does not directly transfer the hydrogen atom to the oxygen atom, but under the action of deoxygenase and various coenzymes, transfers the hydrogen atom through a series of hydrogen carriers, and then transfers the hydrogen atom to the cytochrome , Cytochrome reacts with iron ions, and as a carrier of protons and electrons, it finally delivers protons and electrons to molecular oxygen for complete oxidation.

Iron can reduce the activation energy of microbial growth and the activation energy of matrix degradation reaction, thereby weakening the influence of external environmental factors such as temperature on the reaction process, and accelerating the degradation rate of organic matter and the growth rate of microorganisms.

D. Biological oxidation

Biofilm grows on the surface of the biofiller 4 of this sewage treatment device, and because the specific surface area of the biofiller 4 is large, the amount of biofilm is large and the concentration is high. When the sewage treated by the micro-electrolytic filler 8 enters the biological filler 4, the metabolic activity of microorganisms on the biological filler 4 oxidizes and removes pollutants, so that the sewage can be purified. It is aerated by the air supply system to provide oxygen for the microorganisms, and at the same time, it is stirred to promote the continuous renewal of the biofilm, so that the biofilm can always maintain a high activity.

E. Biosorption

The viscous substances produced by microorganisms in their metabolism, such as polysaccharides and esters, act as adsorption bridges, bond with suspended particles and colloidal particles to form fine flocs, and the adsorption is mainly done by flocs, which can Make a large amount of suspended organic matter in the sewage adhere to it, and then decompose and utilize it. Bacteria in flocs cannot be swallowed by protozoa because they are embedded in colloids, and the formation of flocs is conducive to the sedimentation of sludge. Therefore, the highly active biofilm is not only reflected in biological oxidation and degradation, but also in biological flocculation and adsorption. For some refractory substances, it can be adsorbed, trapped and removed.

F. Filtration

The high-density fiber filament 3 of this sewage processor is used as a filler. It has many voids and a large specific surface area, which has a mechanical interception effect and can intercept a large amount of suspended matter and biological flocs in the sewage. mud concentration.

The working principle of the utility model sewage processor:

The water enters the inner central cylinder 9 of the sewage treatment device through the water inlet pipe 1, and after passing through the water distributor 7 to evenly distribute water, it flows downward into the area of the iron-carbon micro-electrolytic filler 8. The oxidation-reduction effect of the micro-battery formed by carbon, physical adsorption and flocculation-sedimentation work together to treat the sewage, remove heavy metals, toxic pollutants, phosphorus, etc., and improve the biodegradability of the sewage. 11 is adjusted by the pH of the dosing device 10, and then enters the separation area at the lower part of the central guide tube 11 for mud-water separation, and the sludge enters the conical part at the bottom of the shell 2 and is discharged through the sludge discharge pipe 21 controlled by the sludge discharge solenoid valve 20 . The water enters the area of the biofiller 4 upwards from around the center guide tube 11, and the biofilm grown on the biofiller 4 is used to perform biological oxidation, biosorption and bioflocculation on the sewage to purify the water quality. The oxygen required by the microorganisms is delivered by the air compressor through the air supply pipe 5 through the perforated pipe aerator 16, and the amount of air is controlled by the air valve 6. Then, the water continues to enter the high-density fiber 3 area upwards, and the high-density fiber 3 is used to intercept and filter impurities such as suspended solids and biological flocs in the water to ensure the water quality of the effluent. Finally, the effluent is collected by the upper water collection tank 14. The outlet pipe 15 penetrating into the housing 2 is discharged, and the whole treatment process is completed. During normal operation, the venting electromagnetic valve 18 is closed, and only when the equipment needs to be overhauled, the venting electromagnetic valve 18 is just opened.

The sewage processor of the utility model is mainly used for industrial sewage treatment.

Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above-mentioned examples. Those of ordinary skill in the art can make changes, modifications, additions or replacements within the essential scope of the present utility model. All should belong to the protection scope of the present utility model.

Claims (10)

1. A sewage processor, comprising a housing, a support plate, a composite filler in the housing, an inlet pipe connected to the housing outside the housing, an outlet pipe and an air supply device, and a perforated aerator is arranged between the support plate and the composite filler , the perforated aerator is connected with an external air supply device by an air supply pipe, and is characterized in that a central cylinder is arranged in the housing, a water distributor is arranged on the upper part of the central cylinder, and a micro-electrolysis filler is arranged on the lower part, and the micro-electrolysis The filler and the opening at the bottom of the central cylinder are located on the support plate, and the water inlet pipe is introduced into the central cylinder from the upper part of the shell to connect with the water distributor; there is a ring-shaped upwardly open water collection tank surrounding the central cylinder and higher than Around the upper part of the composite filler, one end of the outlet pipe is connected to the sump, and the other end of the outlet pipe is led out through the shell; a central guide tube is arranged under the support plate, and the upper and lower ends of the center guide tube are both open, and the center guide tube The upper end is connected with the support plate, and a dosing device is arranged in the center guiding cylinder, and a dosing tube connected with the dosing device passes upwards through the central cylinder and leads out from the upper part of the shell, and is connected with the external dosing equipment; The composite filler surrounds the central cylinder and is divided into upper and lower layers supported by support plates. 2. According to the sewage treatment device according to claim 1, it is characterized in that said micro-electrolytic filler is iron-carbon micro-electrolytic filler. 3. The sewage processor according to claim 1 or 2, characterized in that the lower layer of the composite filler surrounding the central cylinder in the housing is biological filler, and the upper layer is high-density fiber filaments. 4. The sewage processor according to claim 3, characterized in that the perforated aerator is ring-shaped, surrounds the central cylinder, is located below the biological filler in the lower layer, and the air supply pipe connected to the perforated aerator Set the air valve on. 5. The sewage treatment device according to claim 1 or 2, characterized in that said dosing device is an annular perforated tube type. 6. The sewage treatment device according to claim 4, characterized in that said dosing device is an annular perforated tube type. 7. The sewage processor according to claim 1 or 2, characterized in that the housing is a circular cylinder, the upper part is cylindrical, and the lower part is conical, and the support plate is arranged on the cylindrical housing. Inside, it is supported by 4 support frames evenly distributed in the conical shell. 8. The sewage processor according to claim 6, characterized in that the housing is a circular cylinder, the upper part is cylindrical, and the lower part is conical, and the support plate is arranged in the cylindrical housing, It is supported by 4 support frames evenly distributed in the conical shell. 9. The sewage processor according to claim 7, characterized in that the tip of the bottom of the housing is connected with a mud discharge pipe, the mud discharge pipe is connected with an emptying pipe, and an emptying electromagnetic valve is arranged on the emptying pipe to discharge mud. A sludge discharge solenoid valve is set on the pipe. 10. The sewage processor according to claim 8, characterized in that the tip of the bottom of the housing is connected with a mud discharge pipe, the mud discharge pipe is connected with an emptying pipe, and an emptying electromagnetic valve is arranged on the emptying pipe to discharge mud. A sludge discharge solenoid valve is set on the pipe. the