CN109534474B

CN109534474B - Industrial sewage treatment device

Info

Publication number: CN109534474B
Application number: CN201811582428.6A
Authority: CN
Inventors: 姜琦
Original assignee: Wuhan Green Environmental Protection Facilities Operation Co ltd
Current assignee: WUHAN GELIN HUANYUAN PURIFYING ENGINEERING Co.,Ltd.
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2021-07-27
Anticipated expiration: 2038-12-24
Also published as: CN109534474A

Abstract

The invention discloses an industrial sewage treatment device which comprises a base, and a treatment tank, an air storage tank and a water storage tank which are fixed on the base. The industrial sewage treatment device has the characteristics of low energy consumption and low operating cost, can purify industrial sewage in different industries such as chemical industry, electric power, metallurgy, electronics, biology, medicine, food and the like, and can be used as water sources for flushing toilets, spraying streets, irrigating green belts, industrial water, fire prevention and the like, so that the effects of treating industrial pollution, purifying and restoring the environment and expanding human living space are achieved.

Description

Industrial sewage treatment device

Technical Field

The invention relates to an industrial sewage treatment device.

Background

In the industrial production process, can produce the sewage that contains more toxic chemical, this type of sewage mainly carries out neutralization through chemical agent or chemical gas, realize sewage purification after the neutralization, make emission environmental protection more, the tradition is put when carrying out sewage treatment, sewage enters into the inside of treatment tank, continuous rotation through the cup, throw away sewage dispersion, the chemical agent who sprays the neutralization usefulness of falling from extension jar department fully contacts with the sewage after the dispersion, neutralization agent also is the dispersion form under the rotation of cup and throws away, realize coming with the further contact of sewage, improve sewage neutralization efficiency, utilize the air pump can be used for the neutralization of sewage after taking out the chemical gas in the gas holder.

Silanes enter the human eye due to their unique structural properties and excellent protective effects on metals. When the silane film has good compactness, the silane film can have good protection effect on a metal matrix, but due to the existence of defects such as micropores, cracks and the like in the silane film, when the silane film is corroded by a corrosive medium, the corrosion is easily generated in the defect areas. Moreover, since the silane film has poor self-repairing property, corrosion rapidly spreads deep once it occurs, and thus the silane film has poor durability against metal substrate protection. The invention well avoids the defect of the silane film by introducing the inorganic component into the silane film.

The rigid polyvinyl chloride drain pipe, called UPVC drain pipe for short, has the characteristics of light weight, smoothness, beautiful appearance, small water resistance, flexible assembly, time and labor saving in installation, difficult blockage in use, small maintenance amount and the like. The invention of application number 201610735946.1 discloses a rigid polyvinyl chloride plastic drain pipe fitting formula, which comprises 92-102g of polyvinyl chloride resin, 3-5.5g of metal soap stabilizer, 1-1.5g of lubricant, 2-3g of gadoleic acid ester processing aid, 3-6g of pigment preparation, 4-8g of acetone, 8-14g of furfural and 12-18g of diethylenetriamine.

In order to further improve the service performance of the rigid polyvinyl chloride drain pipe, the elastomer is used as a modifier in the production of the rigid polyvinyl chloride, so that the production cost is reduced, huge economic benefits are brought to related enterprises, and the forward development of the rigid polyvinyl chloride industry is promoted; on the other hand, the processing performance of the rigid polyvinyl chloride and the service performance of the product are improved, great economic benefits are brought to the society, and social progress is promoted.

Disclosure of Invention

The technical problem to be solved by the invention is to provide an industrial sewage treatment device which can realize sewage treatment and has relatively low cost.

The invention is realized by the following technical scheme:

the invention discloses an industrial sewage treatment device, which comprises a base, a treatment tank, an air storage tank and a water storage tank, wherein the treatment tank, the air storage tank and the water storage tank are fixed on the base, a water inlet pipe for entering sewage is welded at the position, close to the top, of the side wall of the treatment tank, a sleeve pipe corresponding to the water inlet pipe is welded at the position of the side wall of the treatment tank, a motor is matched through the sleeve pipe, a plurality of supports are welded between the motor and the sleeve pipe, the motor adopts mains supply for power supply and is connected with a switch for adjusting output rotating speed, the motor is provided with an output shaft, a shaft seal is matched between the output shaft and the sleeve pipe, the output shaft extends into the treatment tank and is connected with a cup body, throwing holes are uniformly distributed at the outer wall of the cup body, the sewage entering from the water inlet pipe is flushed into the cup body and thrown out through the throwing holes under the centrifugal force of the cup body, an extension tank is connected with a flange at the upper end of the treatment tank, the utility model discloses a sewage treatment device, including extension jar, pump body, blast pipe, ball valve, gas holder, air pump, air pipe, treatment jar, the lateral wall department of extension jar installs a pump body, and the pump body is connected with a blast pipe, and the blast pipe dock is in the top position department of extension jar, the pump body with be connected with the drinking-water pipe between the water storage tank the top position department welding of extension jar, the department of being close to bottom position of treating jar outer wall is provided with the discharge pipe that the sewage after having handled, installs the ball valve on the discharge pipe, the gas tank cooperation has an air pump, the air pump has the connection the exhaust tube of gas holder still is connected with an air feed pipe, the air feed pipe cooperation is handled the jar, the exhaust tube is being close to gas tank position department is provided with first ball valve.

In a preferred embodiment, the base is made of stainless steel, and a cerium-containing silane composite film with good corrosion resistance is arranged on the surface of the stainless steel.

The invention provides two technical schemes for preparing a cerium-containing silane composite film on the surface of stainless steel:

as a technical scheme I, the process for preparing the cerium-containing silane composite film on the surface of stainless steel comprises the following steps:

(1) ultrasonically cleaning stainless steel by using acetone, absolute ethyl alcohol and deionized water in sequence, and then drying the stainless steel for 20-40 minutes in a constant-temperature drying oven at the temperature of 120-140 ℃;

(2) soaking the stainless steel obtained in the step (1) in hydrofluoric acid with the mass fraction of 30-40% at 40-60 ℃ for 80-120 minutes, taking out, ultrasonically cleaning the stainless steel by using deionized water to remove the hydrofluoric acid liquid on the surface of the stainless steel, and then drying the stainless steel in a constant-temperature drying oven at 120-140 ℃ for 20-40 minutes;

(3) silane compound, absolute ethyl alcohol and a cerium salt saturated aqueous solution are mixed according to the volume ratio of (2-5): (90-100): (2-5) mixing to obtain a mixed solution; adjusting the pH of the mixed solution to 4-5 by using acrylic acid, and hydrolyzing at the constant temperature of 20-25 ℃ for 2-3 days to obtain a cerium-containing silane solution;

(4) soaking the stainless steel obtained in the step (2) into a cerium-containing silane solution, wherein the liquid level of the cerium-containing silane solution is 5-10 cm higher than the top end of the stainless steel, and vertically pulling the stainless steel at a speed of 40-200 mm/min to ensure that the stainless steel is completely separated from the cerium-containing silane solution; and (3) removing the redundant cerium-containing silane solution on the surface of the stainless steel by blowing, and drying in a constant-temperature blowing drying oven at 120-140 ℃ for 20-40 minutes.

As a second technical scheme, the process for preparing the cerium-containing silane composite film on the surface of the stainless steel comprises the following steps:

(3) placing the stainless steel obtained in the step (2) in an oxidation device for high-temperature oxidation at the oxidation temperature of 500-600 ℃ for 10-12 hours, introducing nitrogen and oxygen into the device in the oxidation process, wherein the ratio of the introduction flow rate of the nitrogen to the introduction flow rate of the oxygen is 3:1, the introduction flow rate of the nitrogen is 20-30 mL/min, and the introduction flow rate of the oxygen is 6-10 mL/min; after the oxidation is finished, naturally cooling the stainless steel to 20-40 ℃;

(4) silane compound, absolute ethyl alcohol and a cerium salt saturated aqueous solution are mixed according to the volume ratio of (2-5): (90-100): (2-5) mixing to obtain a mixed solution; adjusting the pH of the mixed solution to 4-5 by using acrylic acid, and hydrolyzing at the constant temperature of 20-25 ℃ for 2-3 days to obtain a cerium-containing silane solution;

(5) soaking the stainless steel obtained in the step (3) into a cerium-containing silane solution, wherein the liquid level of the cerium-containing silane solution is 5-10 cm higher than the top end of the stainless steel, and vertically pulling the stainless steel at a speed of 40-200 mm/min to ensure that the stainless steel is completely separated from the cerium-containing silane solution; and (3) removing the redundant cerium-containing silane solution on the surface of the stainless steel by blowing, and drying in a constant-temperature blowing drying oven at 120-140 ℃ for 20-40 minutes.

The cerium salt is one or a mixture of more of cerium chloride, cerium nitrate and cerium sulfate.

According to another aspect of the present invention, in the industrial sewage treatment device, the water supply pipe is a rigid polyvinyl chloride pipe, and the rigid polyvinyl chloride pipe comprises the following raw materials in parts by weight: 100-130 parts of polyvinyl chloride, 0.5-2 parts of sodium stannate, 1-3 parts of sodium pyrophosphate, 40-80 parts of calcium carbonate, 0.4-1 part of liquid paraffin, 1-2 parts of calcium stearate and 1-4 parts of lubricant.

In a particularly preferred embodiment of the present invention, the rigid polyvinyl chloride raw material further comprises 10 to 30 parts by weight of an elastomer. Namely, the rigid polyvinyl chloride is prepared from the following raw materials in parts by weight: 100-130 parts of polyvinyl chloride, 0.5-2 parts of sodium stannate, 1-3 parts of sodium pyrophosphate, 40-80 parts of calcium carbonate, 0.4-1 part of liquid paraffin, 1-2 parts of calcium stearate, 10-30 parts of elastomer and 1-4 parts of lubricant.

The elastomer is one or a mixture of chloroethylene-n-butyl acrylate-methyl methacrylate copolymer elastomer and chloroethylene-n-butyl acrylate-styrene elastomer. In a particularly preferred embodiment of the present invention, the elastomer is a copolymer elastomer of vinyl chloride-n-butyl acrylate-methyl methacrylate, or a copolymer elastomer of vinyl chloride-n-butyl acrylate-styrene elastomer, wherein the mass ratio of (1-2): (1-2).

The chloroethylene-n-butyl acrylate-methyl methacrylate elastomer is prepared by the following preparation process: adding 100-150 g of deionized water, 2-4 g of n-butyl acrylate, 0.8-1.3 g of sodium dodecyl sulfate and 0.6-1.2 g of potassium persulfate into a reaction kettle, and uniformly mixing to obtain a mixed solution; filling nitrogen into the reaction kettle, discharging the nitrogen, vacuumizing, stirring for 1-1.5 hours at 40-80 revolutions per minute, heating to 40-45 ℃, and carrying out heat preservation reaction for 2-3 hours at 40-45 ℃; then adding 15-20 g of vinyl chloride, 5-7 g of n-butyl acrylate, 9-10 g of methyl methacrylate and 0.1-0.15 g of potassium persulfate into the reaction system, continuing to perform heat preservation reaction at 40-45 ℃ for 10-16 hours, and then heating to 70-76 ℃ for reaction for 1-2 hours; introducing condensed water, cooling the reaction liquid to 30-40 ℃, then standing at 0-2 ℃ for 12-24 hours, centrifuging, and collecting bottom solids; and (3) drying the bottom solid in vacuum to obtain the chloroethylene-n-butyl acrylate-methyl methacrylate elastomer.

The chloroethylene-n-butyl acrylate-styrene elastomer is obtained by adopting the following steps:

(1) adding 0.1-0.2 g of sodium dodecyl sulfate into a reaction device, then adding 100-150 g of deionized water, and introducing nitrogen under the stirring condition; stirring until sodium dodecyl sulfate is dissolved, adding a mixture of 8-10 g of n-butyl acrylate and styrene, introducing condensed water, heating to 65-75 ℃, adding an initiator solution formed by dissolving 0.1-0.13 g of potassium persulfate in 10-15 g of deionized water, and reacting at 65-75 ℃ for 1-2 hours to complete the polymerization at a seed stage; then adding a mixture of 32-40 g of n-butyl acrylate and styrene, and simultaneously adding an emulsifier solution formed by dissolving 0.15-0.2 g of sodium dodecyl sulfate in 20-26 g of deionized water and an initiator solution formed by dissolving 0.1-0.13 g of potassium persulfate in 10-13 g of deionized water; after the feeding is finished, reacting for 2-3 hours at the temperature of 65-75 ℃, and naturally cooling to 30-40 ℃ to obtain an elastomer emulsion; in the mixture of the n-butyl acrylate and the styrene, the mass ratio of the n-butyl acrylate to the styrene is (1-3): (3-1);

(2) adding 30-40 g of elastomer emulsion, 50-80 g of deionized water, 0.6-1.2 g of potassium persulfate and 0.6-1.2 g of sodium dodecyl sulfate into a reaction device, and uniformly mixing to obtain a mixed solution; adjusting the pH of the mixed solution to 9-10 by using a sodium hydroxide aqueous solution with the mass fraction of 1-10%, filling nitrogen into a reaction kettle, discharging nitrogen, vacuumizing, adding 20-25 g of chloroethylene, heating to 50-70 ℃ under the stirring condition, and carrying out heat preservation reaction at 50-70 ℃ for 16-20 hours; after the reaction is finished, removing unreacted chloroethylene in the reaction system under reduced pressure, standing the reaction solution at 0-2 ℃ for 12-24 hours, centrifuging, and collecting bottom solids; and (3) drying the bottom solid in vacuum to obtain the chloroethylene-n-butyl acrylate-methyl methacrylate elastomer.

The material of the air supply pipe is high-density polyethylene.

Preferably, the cup body is provided with a mounting sleeve for connecting the output shaft, and a screw is matched between the mounting sleeve and the output shaft.

Preferably, fins are welded on the outer wall of the cup body, and the existence of the fins can better disperse sewage or neutralize medicament.

Preferably, a check valve is arranged on the air supply pipe.

Preferably, a hollow disk body is arranged in the treatment tank, air outlet holes are uniformly distributed on the upper surface of the disk body, a connecting rod is welded between the disk body and the treatment tank, and the disk body is provided with a connecting pipe butted with the air supply pipe; through above-mentioned structure, can realize evenly giving vent to anger, the disk body also can adopt the air stone to replace to reduce cost.

Preferably, a cleaning pipe for discharging precipitated sludge is arranged at the lower end of the treatment tank, and a sealing cover is in threaded connection with the pipe orifice of the cleaning pipe.

Preferably, the exhaust tube is connected with the branch intake pipe, branch intake pipe position department installs the second ball valve, need not to use chemical gas to carry out the neutralization of sewage when, can open the second ball valve, and the back is opened to the second ball valve, and the air pump during operation is with the air suction, and the suction back, air can be in the inside formation bubble of handling the jar, and the bubble helps the mixture of sewage and chemistry neutralization agent.

This device is when carrying out sewage treatment, and sewage enters into the inside of treatment tank, through the continuous rotation of cup, throws away the sewage dispersion, and the chemical reagent who sprays the neutralization usefulness that falls from extension jar department fully contacts with the sewage after the dispersion, and neutralization reagent also is the dispersion form under the rotation of cup and spills, realizes with the further contact of sewage, improves sewage neutralization efficiency, utilizes the air pump to be used for the neutralization of sewage after can taking out the chemical gas in the gas holder.

The invention has the following advantages:

1. the water repellent silane film layer is formed on the surface of the stainless steel base, so that water is inhibited from entering the substrate, the performances of water resistance, chloride ion resistance and ultraviolet resistance are generated, the corrosion, looseness, peeling and mildew of the stainless steel internal structure caused by water seepage, sunshine and chemical corrosion of the stainless steel base can be effectively prevented, the service life of the industrial sewage treatment device is prolonged, and the maintenance cost is reduced.

2. Cerium ions with a self-repairing function for a film damage area are introduced into a silane film solution system, and the cerium ions can be filled into micropores and cracks in the silane film after being introduced into the silane film, so that the compactness of the silane film is effectively improved, and the difficulty of permeation of a corrosive medium in the silane film is increased. If corrosion occurs at the metal interface, cerium ions in the film layer can migrate to the film layer damage area, and a passivation film is formed at the interface through oxidation-reduction chemical reaction to repair the damaged film layer.

3. The elastomer with good compatibility with the polyvinyl chloride is introduced into the hard polyethylene, so that the problem of elastomer agglomeration existing in the prior art that the elastomer is added into the polymer by a blending method is solved. Meanwhile, the two elastomers cited in the invention can be used as compatilizers and can form chemical bonding with matrix polyvinyl chloride, so that the stress transfer of the blending material is improved, and the toughening effect of the hard polyethylene is improved.

4. The equipment structure of this device is comparatively simple, and the cost of complete equipment is controlled between 5 ~ 25 ten thousand yuan according to the size of scale, is particularly suitable for middle-size and small-size enterprise to use, and this device is limited only to and has chemical pollution's sewage, can't realize filtering to the inside sewage that contains more impurity, and the structure of this device is comparatively simple, and the cost is comparatively cheap, is fit for using widely.

The industrial sewage treatment device has the characteristics of low energy consumption and low operating cost, can purify industrial sewage in different industries such as chemical industry, electric power, metallurgy, electronics, biology, medicine, food and the like, and can be used as water sources for flushing toilets, spraying streets, irrigating green belts, industrial water, fire prevention and the like, so that the effects of treating industrial pollution, purifying and restoring the environment and expanding human living space are achieved.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the cup body;

fig. 3 is a top view of the tray body.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Introduction of raw materials:

in the examples, 304 stainless steel is specifically used.

Examples bis- [3- (triethoxy) silylpropyl ] tetrasulfide silane, CAS number: 40372-72-3.

Examples acrylic acid, CAS No.: 79-10-7.

Examples cerium nitrate, CAS number: 13093-17-9.

Examples cerium chloride, CAS number: 7790-86-5.

Examples cerium sulfate, CAS number: 17106-39-7.

In the examples, polyvinyl chloride was purchased from Zibofehe chemical Co., Ltd., trade name S-700.

Sodium stannate in the examples, CAS number: 12209-98-2.

Sodium pyrophosphate in the examples, CAS No.: 7722-88-5.

In the examples, calcium carbonate was obtained from Hemerocallis Kogyo, Shanghai, 5000 mesh.

Liquid paraffin in examples, CAS No.: 8042-47-5, available from chemical industries, Inc. of Waverrucke, Beijing.

Examples calcium stearate, CAS number: 1592-23-0.

The lubricants used in the examples are, in particular, ethylene bisstearamide, CAS No.: 110-30-5.

Examples vinyl chloride, referring to vinyl chloride monomer, CAS No.: 75-01-4.

Examples n-butyl acrylate, CAS number: 141-32-2.

Examples potassium persulfate, CAS number: 7727-21-1.

Examples sodium lauryl sulfate, CAS number: 151-21-3.

Examples methyl methacrylate, CAS number: 80-62-6.

Styrene in the examples, CAS number: 100-42-5.

Example 1

As shown in fig. 1, 2 and 3, an industrial sewage treatment device comprises a base 1, a treatment tank 2 fixed on the base 1, a gas storage tank 3 and a water storage tank 4, wherein according to the type of chemical substances contained in the discharged sewage, corresponding treatment gas can be stored in the gas storage tank 3, and similarly, chemical liquid medicine for neutralizing the sewage can be stored in the water storage tank 4, a water inlet pipe 201 for entering the sewage is welded at a position close to the top of the side wall of the treatment tank 2, a sleeve pipe 202 corresponding to the water inlet pipe is welded at the side wall of the treatment tank 2, a motor 203 is matched through the sleeve pipe 202, the motor adopts a three-phase motor, a plurality of brackets 204 are welded between the motor 203 and the sleeve pipe 202, the motor 203 adopts commercial power supply and is connected with a switch (not shown) for adjusting the output rotating speed, the motor 203 has an output shaft 205, a shaft seal (not shown) is matched between the output shaft 205 and the sleeve 202, in this embodiment, a packing is used as the shaft seal for sealing, the output shaft 205 is connected with a cup 5 after extending into the treatment tank 2, the outer wall of the cup 5 is uniformly provided with a throwing hole 501, sewage entering from the water inlet pipe 101 is flushed into the cup 5 and is thrown out through the throwing hole 501 under the action of centrifugal force of the cup 5, an extension tank 6 is connected with a flange at the upper end of the treatment tank 1, a pump body 7 is installed at the side wall of the extension tank 6, the pump body is also connected with a speed regulating switch, the pump body is powered by commercial power, the pump body 7 is connected with a water supply pipe 701, the water supply pipe 701 is butted at the top position of the extension tank 6, a water pumping pipe 702 is connected between the pump body 7 and the water storage tank 4, and a gas exhaust pipe 8 is welded at the top position of the extension tank 6, the use of the extension tank mainly avoids the cup body from throwing away sewage, a discharge pipe 206 for discharging the treated sewage is arranged at a position, close to the bottom, of the outer wall of the treatment tank 2, a ball valve 207 is installed on the discharge pipe 206, the air storage tank 3 is matched with an air pump 9, the air pump 9 is provided with an air suction pipe 901 connected with the air storage tank 3 and is also connected with an air feed pipe 902, the air feed pipe 902 is matched with the treatment tank 2, and a first ball valve 911 is arranged at a position, close to the air storage tank 3, of the air suction pipe 901.

The base is made of stainless steel, and a cerium-containing silane composite film with a good corrosion resistance effect is arranged on the surface of the stainless steel. The process for preparing the cerium-containing silane composite film on the surface of the stainless steel comprises the following steps:

(1) ultrasonically cleaning stainless steel by using acetone, absolute ethyl alcohol and deionized water in sequence, wherein the ultrasonic power is 250W, the ultrasonic frequency is 40kHz, and the ultrasonic cleaning time of the acetone, the absolute ethyl alcohol and the deionized water is 10 minutes, and then drying the stainless steel in a constant-temperature drying oven for 30 minutes at 120 ℃;

(2) soaking the stainless steel obtained in the step (1) in hydrofluoric acid with the mass fraction of 40% at 45 ℃ for 100 minutes, taking out, ultrasonically cleaning the stainless steel with deionized water to remove the hydrofluoric acid solution on the surface of the stainless steel, wherein the ultrasonic power and the ultrasonic frequency are the same as those in the step (1), and then drying the stainless steel in a constant-temperature drying oven at 120 ℃ for 30 minutes;

(3) mixing bis- [3- (triethoxy) silicon propyl ] tetrasulfide silane, absolute ethyl alcohol and cerium nitrate saturated aqueous solution according to the volume ratio of 3:98:5 to obtain mixed solution; regulating the pH value of the mixed solution to 4 by using acrylic acid, and hydrolyzing for 2 days at the constant temperature of 25 ℃ to obtain a cerium-containing silane solution;

(4) soaking the stainless steel obtained in the step (2) into a cerium-containing silane solution, wherein the liquid level of the cerium-containing silane solution is 5cm higher than that of the stainless steel, and vertically pulling the stainless steel at the speed of 40mm/min to ensure that the stainless steel is completely separated from the cerium-containing silane solution; blowing air to remove the excess cerium-containing silane solution on the surface of the stainless steel, and drying in a constant-temperature air-blowing drying oven at 120 ℃ for 40 minutes.

The water supply pipe is a rigid polyvinyl chloride pipe fitting and is made of rigid polyvinyl chloride by a conventional process. The rigid polyvinyl chloride comprises the following raw materials in parts by weight: 130 parts of polyvinyl chloride, 2 parts of sodium stannate, 1 part of sodium pyrophosphate, 80 parts of calcium carbonate, 1 part of liquid paraffin, 1.5 parts of calcium stearate and 2 parts of lubricant.

Example 2

The structure of the industrial sewage device is the same as that of the embodiment 1, and the details are not repeated.

(3) placing the stainless steel obtained in the step (2) in an oxidation device for high-temperature oxidation at the oxidation temperature of 600 ℃ for 12 hours, and introducing nitrogen and oxygen into the oxidation device in the oxidation process, wherein the flow rate of the nitrogen is 24mL/min, and the flow rate of the oxygen is 8 mL/min; after the oxidation is finished, naturally cooling the stainless steel to 30 ℃;

(4) mixing bis- [3- (triethoxy) silicon propyl ] tetrasulfide silane, absolute ethyl alcohol and a saturated aqueous solution of cerium chloride according to a volume ratio of 3:98:5 to obtain a mixed solution; regulating the pH value of the mixed solution to 4 by using acrylic acid, and hydrolyzing for 2 days at the constant temperature of 25 ℃ to obtain a cerium-containing silane solution;

(5) soaking the stainless steel obtained in the step (3) into a cerium-containing silane solution, wherein the liquid level of the cerium-containing silane solution is 5cm higher than that of the stainless steel, and vertically pulling the stainless steel at the speed of 40mm/min to ensure that the stainless steel is completely separated from the cerium-containing silane solution; blowing air to remove the excess cerium-containing silane solution on the surface of the stainless steel, and drying in a constant-temperature air-blowing drying oven at 120 ℃ for 40 minutes.

The water supply pipe is a rigid polyvinyl chloride pipe fitting, and the rigid polyvinyl chloride pipe fitting comprises the following raw materials in parts by weight: 130 parts of polyvinyl chloride, 2 parts of sodium stannate, 1 part of sodium pyrophosphate, 80 parts of calcium carbonate, 1 part of liquid paraffin, 1.5 parts of calcium stearate and 2 parts of lubricant.

Example 3

(4) mixing bis- [3- (triethoxy) silicon propyl ] tetrasulfide silane, absolute ethyl alcohol and cerium nitrate saturated aqueous solution according to the volume ratio of 3:98:5 to obtain mixed solution; regulating the pH value of the mixed solution to 4 by using acrylic acid, and hydrolyzing for 2 days at the constant temperature of 25 ℃ to obtain a cerium-containing silane solution;

Example 4

(4) mixing bis- [3- (triethoxy) silicon propyl ] tetrasulfide silane, absolute ethyl alcohol and a cerium sulfate saturated aqueous solution according to a volume ratio of 3:98:5 to obtain a mixed solution; regulating the pH value of the mixed solution to 4 by using acrylic acid, and hydrolyzing for 2 days at the constant temperature of 25 ℃ to obtain a cerium-containing silane solution;

Comparative example 1

(4) mixing bis- [3- (triethoxy) silicon propyl ] tetrasulfide silane, absolute ethyl alcohol and deionized water according to the volume ratio of 3:98:5 to obtain a mixed solution; adjusting the pH value of the mixed solution to 4 by using acrylic acid, and hydrolyzing for 2 days at the constant temperature of 25 ℃ to obtain a silane solution;

(5) soaking the stainless steel obtained in the step (3) into a silane solution, wherein the liquid level of the silane solution is 5cm higher than that of the stainless steel, and vertically pulling the stainless steel at the speed of 40mm/min to ensure that the stainless steel is completely separated from the silane solution; blowing air to remove excessive silane solution on the surface of the stainless steel, and drying in a constant-temperature air-blowing drying oven at 120 ℃ for 40 minutes.

The anticorrosive performance of the stainless steel for the bases of the examples 1 to 4 and the comparative example 1 is detected as follows:

1. the acid corrosion resistance is carried out by referring to ASTM31-72 by using a static corrosion weight loss method, an acid medium is a nitric acid solution with the mass fraction of 63.01%, the test time is 72 hours, and the uniform corrosion rate of the stainless steel is calculated by using the weight loss method. The acid corrosion resistance rate is shown in table 1.

TABLE 1 results of acid corrosion resistance rate

2. Resistance to carbon dioxide corrosion was performed using the dynamic weight loss method referenced patent 201510198771.0, test conditions: the temperature is 200 ℃, the gas partial pressure is 9MPa, the test time is 240 hours, and the rotation speed is 1 m/s. The carbon dioxide corrosion resistance rates are shown in table 2.

TABLE 2 results of carbon dioxide corrosion resistance rates

As can be seen from the above data, the stainless steels for a base of examples 1 to 4 have excellent corrosion resistance compared to the comparative examples. The reason for this is that: when stainless steel is placed in an air medium, an oxide film is formed on the surface of the stainless steel, which prevents the stainless steel from contacting the oxidizing medium. However, such oxide films are not stable in highly corrosive media. In embodiments 2 to 4, firstly, stainless steel is placed in hydrofluoric acid, an oxide film naturally formed on the surface of the stainless steel is removed, a rough surface structure is formed on the surface of the stainless steel, then the stainless steel is placed in a high-temperature environment for oxidation growth, micro-nano-sized protruding structures uniformly distributed are formed on the surface of the stainless steel, and a silane composite film is covered on the protruding surfaces, so that a hydrophobic surface with a good hydrophobic effect is formed, and the corrosion speed of a corrosive medium is slowed down.

Example 5

The water supply pipe is a rigid polyvinyl chloride pipe fitting, and the rigid polyvinyl chloride pipe fitting comprises the following components in parts by weight: 130 parts of polyvinyl chloride, 2 parts of sodium stannate, 1 part of sodium pyrophosphate, 80 parts of calcium carbonate, 1 part of liquid paraffin, 1.5 parts of calcium stearate, 17 parts of chloroethylene-n-butyl acrylate-methyl methacrylate elastomer and 2 parts of lubricant.

The chloroethylene-n-butyl acrylate-methyl methacrylate elastomer is prepared by the following preparation process: adding 100g of deionized water, 2g of n-butyl acrylate, 0.8g of sodium dodecyl sulfate and 1.2g of potassium persulfate into a reaction kettle, and uniformly mixing to obtain a mixed solution; filling nitrogen into the reaction kettle, discharging the nitrogen, vacuumizing, stirring at 80 rpm for 1 hour, heating to 45 ℃ at 2 ℃/minute, and carrying out heat preservation reaction at 45 ℃ for 3 hours; then adding 15g of chloroethylene, 5g of n-butyl acrylate, 9g of methyl methacrylate and 0.1g of potassium persulfate into the reaction system, continuing to perform heat preservation reaction at 45 ℃ for 10 hours, and then raising the temperature to 70 ℃ at the speed of 2 ℃/min to perform reaction for 1 hour; introducing condensed water, cooling the reaction liquid to 30 ℃, then placing the reaction liquid for 12 hours at the temperature of 2 ℃, centrifuging the reaction liquid for 30 minutes at 6000 revolutions per minute, and collecting bottom solids; and (3) drying the bottom solid for 20 hours in vacuum at 40 ℃ and under the absolute pressure of 0.03MPa to obtain the chloroethylene-n-butyl acrylate-methyl methacrylate elastomer.

Example 6

(5) soaking the stainless steel obtained in the step (4) into a cerium-containing silane solution, wherein the liquid level of the cerium-containing silane solution is 5cm higher than that of the stainless steel, and vertically pulling the stainless steel at the speed of 40mm/min to ensure that the stainless steel is completely separated from the cerium-containing silane solution; blowing air to remove the excess cerium-containing silane solution on the surface of the stainless steel, and drying in a constant-temperature air-blowing drying oven at 120 ℃ for 40 minutes.

The water supply pipe is a rigid polyvinyl chloride pipe fitting, and the rigid polyvinyl chloride pipe fitting comprises the following components in parts by weight: 130 parts of polyvinyl chloride, 2 parts of sodium stannate, 1 part of sodium pyrophosphate, 80 parts of calcium carbonate, 1 part of liquid paraffin, 1.5 parts of calcium stearate, 17 parts of vinyl chloride-n-butyl acrylate-styrene elastomer and 2 parts of lubricant.

(1) 0.2g of sodium dodecyl sulfate, 150g of deionized water and nitrogen were introduced into a four-neck flask equipped with a stirrer, a thermometer, a reflux condenser, a constant-pressure dropping funnel and a nitrogen introduction device under stirring at 80 rpm; stirring until sodium dodecyl sulfate is dissolved, adding a mixture of 10g of n-butyl acrylate and styrene, introducing condensed water, heating to 65 ℃ at the speed of 2 ℃/min, adding an initiator solution formed by dissolving 0.13g of potassium persulfate in 13g of deionized water, and carrying out heat preservation reaction at 65 ℃ for 1 hour to complete the polymerization at the seed stage; then adding a mixture of 40g of n-butyl acrylate and styrene, and simultaneously adding an emulsifier solution formed by dissolving 0.2g of sodium dodecyl sulfate in 26g of deionized water and an initiator solution formed by dissolving 0.13g of potassium persulfate in 13g of deionized water; after the addition is finished, the mixture is subjected to heat preservation reaction at 65 ℃ for 2 hours, and is naturally cooled to 30 ℃ to obtain elastomer emulsion; in the mixture of the n-butyl acrylate and the styrene, the mass ratio of the n-butyl acrylate to the styrene is 3: 1;

(2) adding 40g of elastomer emulsion, 50g of deionized water, 0.6g of potassium persulfate and 0.8g of lauryl sodium sulfate into a reaction kettle, and uniformly mixing to obtain a mixed solution; adjusting the pH value of the mixed solution to 9 by using a sodium hydroxide aqueous solution with the mass fraction of 10%, filling nitrogen into a reaction kettle, discharging the nitrogen, vacuumizing, adding 25g of chloroethylene, heating to 70 ℃ at the speed of 5 ℃/min under the condition of stirring at 80 revolutions per minute, and carrying out heat preservation reaction at the temperature of 70 ℃ for 18 hours; after the reaction is finished, removing unreacted chloroethylene in the reaction system under reduced pressure, placing the reaction solution at 2 ℃ for 12 hours, centrifuging at 6000 rpm for 40 minutes, and collecting bottom solids; and (3) drying the bottom solid in vacuum for 20 hours at 40 ℃ under the absolute pressure of 0.04MPa to obtain the chloroethylene-n-butyl acrylate-styrene elastomer.

Example 7

The water supply pipe is a rigid polyvinyl chloride pipe fitting, and the rigid polyvinyl chloride pipe fitting comprises the following components in parts by weight: 130 parts of polyvinyl chloride, 2 parts of sodium stannate, 1 part of sodium pyrophosphate, 80 parts of calcium carbonate, 1 part of liquid paraffin, 1.5 parts of calcium stearate, 10 parts of chloroethylene-n-butyl acrylate-methyl methacrylate elastomer, 7 parts of chloroethylene-n-butyl acrylate-styrene elastomer and 2 parts of lubricant.

The preparation of the vinyl chloride-n-butyl acrylate-methyl methacrylate elastomer was the same as in example 5.

The vinyl chloride-n-butyl acrylate-styrene elastomer was prepared as in example 6.

The performance of the hard polyethylene materials in the embodiments 1 and 5-7 is detected as follows:

preparation of a sample: weighing the raw materials according to the formula, and mixing for 10 minutes in a high-speed mixer to obtain a mixture; discharging the mixture, carrying out open milling plasticization by a double-roller open mill, wherein the open milling temperature is 170 ℃, the open milling time is 8 minutes, and discharging sheets; hot pressing the sheet into a plate by a flat press, wherein the hot pressing temperature is 180 ℃, the hot pressing time is 5 minutes, and taking out the pressed plate; and cutting the pressed plate into a standard sample strip with a required size, and carrying out a tensile test, an impact test, a hardness test and a thermal deformation temperature test on the sample strip.

Tensile property: specimens with a parallel portion width of 6mm were prepared according to GB/T8804.2-2003 and the test speed was 5 mm/min.

Impact properties: a sample strip with the length of 80.0mm and the width of 10.0mm is prepared according to the measurement of GB/T1043.1-2008, the thickness d of the sample strip is tested, and the residual thickness of a notch is 0.8 d.

Hardness: according to the measurement of GB/T2411-.

Heat distortion temperature: the temperature of the sample strip when the sample strip is pressed into the depth of 1mm by an indenter is the thermal deformation temperature of the sample strip, and the temperature at the moment is recorded according to GB/T1633-2000.

The specific test results are shown in table 3.

Table 3 hard polyvinyl chloride performance test result table

	Example 1	Example 5	Example 6	Example 7
					Tensile Strength (MPa)	39.55	40.91	40.72	42.05
Elongation at Break (%)	190.17	192.88	192.35	194.81
					Impact Strength (kJ/m)²)	16.92	17.37	17.11	19.45
Shore Hardness (HD)	77.0	77.6	77.4	78.3
					Heat distortion temperature (. degree. C.)	82.5	83.2	83.0	83.8

As can be seen from Table 3, example 7 has improved the overall properties of rigid polyvinyl chloride, especially the impact strength, by using a combination of a vinyl chloride-n-butyl acrylate-methyl methacrylate elastomer and a vinyl chloride-n-butyl acrylate-styrene elastomer. The reason is that the vinyl chloride-n-butyl acrylate-styrene elastomer not only contains a vinyl chloride chain segment, but also contains a butyl acrylate chain segment and a styrene chain segment, so that the elastomer resin not only has the characteristics of plastics, but also has hot spots of the elastomer, and has good compatibility with polyvinyl chloride; the vinyl chloride-n-butyl acrylate-styrene elastomer has the advantages that the transparency of the polyvinyl chloride is improved by virtue of the methyl methacrylate monomer with excellent performance, the melt strength and the low-temperature impact resistance of the polyvinyl chloride are improved, and the defect of poor low-temperature impact resistance of the polyvinyl chloride is well overcome.

Example 7 drop hammer impact performance test of rigid polyethylene pipe:

the first step is as follows: the rigid polyvinyl chloride of example 7 was processed into pipes: weighing the raw materials according to the formula, and mixing for 10 minutes in a high-speed mixer to obtain a mixture; discharging the mixture, and putting the mixture into a charging barrel of a double-screw extruder, wherein the temperature of a first area of the charging barrel of the extruder is 185 ℃, the temperature of a second area of the charging barrel is 190 ℃, the temperature of a third area of the charging barrel is 175 ℃, the temperature of a fourth area of the charging barrel is 170 ℃, the mixture is heated and melted and extruded in the barrel, and the temperature of a first area of a heating area of a machine head is 165 ℃, the temperature of the second area of the charging barrel is 160 ℃, the temperature of the third area of the charging barrel is 185 ℃, and the temperature of the fourth area of the charging barrel is 170 ℃; after extrusion, the rigid polyvinyl chloride pipe with the size of phi 110 multiplied by 3.2mm is obtained after cooling and shaping, pulling at 170 revolutions per minute and then cutting.

The second step is that: the impact performance of the rigid polyvinyl chloride pipe is detected as follows: 10 rigid polyvinyl chloride pipe samples with the length of 10cm are intercepted, and the impact performance of the pipe is tested through a full-automatic key falling impact tester under the condition that the weight of a falling weight is 7 kg. The test shows that the rigid polyvinyl chloride pipe is not damaged under the condition of drop hammer impact (7kg, 2m and 23 ℃).

Example 8

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In a preferred embodiment of the present invention, the cup 5 has a mounting sleeve 511 for connecting the output shaft, and a screw 512 is engaged between the mounting sleeve 511 and the output shaft 205.

In a preferred embodiment of the present invention, the fins 513 are welded to the outer wall of the cup body 5, and the existence of the fins 513 can better disperse sewage or neutralize the chemical.

In a preferred embodiment of the present invention, the air supply pipe 902 is provided with a check valve 912.

In a preferred embodiment of the present invention, a hollow tray body 10 is disposed inside the processing tank 2, air outlets 11 are uniformly distributed on the upper surface of the tray body 10, a connecting rod 12 is welded between the tray body 10 and the processing tank 2, and the tray body 10 has a connecting pipe 13 abutting against the air feeding pipe 902; through the structure, uniform air outlet can be realized.

In a preferred embodiment of the present invention, a cleaning pipe 221 for discharging the settled sludge is disposed at the lower end of the treatment tank 2, and a sealing cap 222 is screwed to the opening of the cleaning pipe 221.

In a preferred embodiment of the present invention, the air exhaust pipe 901 is connected to a branch air inlet pipe 991, a second ball valve 992 is installed at the position of the branch air inlet pipe 991, the second ball valve can be opened when chemical gas is not needed to neutralize sewage, after the second ball valve is opened, the air pump pumps air when working, and after the air is pumped, air bubbles can be formed inside the treatment tank, and the air bubbles are helpful for mixing sewage and chemical neutralizing agents.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. An industrial sewage treatment device is characterized in that: the sewage treatment device comprises a base, a treatment tank, an air storage tank and a water storage tank, wherein the treatment tank, the air storage tank and the water storage tank are fixed on the base, a water inlet pipe for entering sewage is welded at the position, close to the top, of the side wall of the treatment tank, a sleeve pipe corresponding to the water inlet pipe is welded at the position, on the side wall of the treatment tank, a motor is matched and arranged in a matching mode, a plurality of supports are welded between the motor and the sleeve pipe, the motor adopts mains supply for power supply and is connected with a switch for adjusting output rotating speed, the motor is provided with an output shaft, a shaft seal is matched and arranged between the output shaft and the sleeve pipe, the output shaft extends into the treatment tank and then is connected with a cup body, throwing holes are uniformly distributed at the outer wall of the cup body, sewage entering from the water inlet pipe is flushed into the cup body and is thrown out through the throwing holes under the centrifugal force of the cup body, an extension tank is connected with an upper end flange, and a pump body is installed at the side wall of the extension tank, the water pump is characterized in that the pump body is connected with a water feeding pipe, the water feeding pipe is in butt joint with the top of the extension tank, a water pumping pipe is connected between the pump body and the water storage tank, a gas discharging pipe is welded at the top of the extension tank, a discharging pipe for discharging treated sewage is arranged at a position, close to the bottom, of the outer wall of the treatment tank, a ball valve is mounted on the discharging pipe, the gas storage tank is matched with a gas pump, the gas pump is provided with a gas pumping pipe connected with the gas storage tank, the gas pumping pipe is also connected with a gas delivery pipe, the gas delivery pipe is matched with the treatment tank, and a first ball valve is arranged at a position, close to the gas storage tank, of the gas pumping pipe; the base is made of stainless steel, and a cerium-containing silane composite film with a good corrosion resistance effect is arranged on the surface of the stainless steel;

the process for preparing the cerium-containing silane composite film on the surface of the stainless steel comprises the following steps:

(5) soaking the stainless steel obtained in the step (3) into a cerium-containing silane solution, wherein the liquid level of the cerium-containing silane solution is 5-10 cm higher than the top end of the stainless steel, and vertically pulling the stainless steel at a speed of 40-200 mm/min to ensure that the stainless steel is completely separated from the cerium-containing silane solution; removing the redundant cerium-containing silane solution on the surface of the stainless steel by air blowing, and drying in a constant-temperature air-blowing drying oven at the temperature of 120-140 ℃ for 20-40 minutes;

the cerium salt is cerium nitrate;

the water supply pipe is a rigid polyvinyl chloride pipe fitting, and the rigid polyvinyl chloride pipe fitting comprises the following raw materials in parts by weight: 100-130 parts of polyvinyl chloride, 0.5-2 parts of sodium stannate, 1-3 parts of sodium pyrophosphate, 40-80 parts of calcium carbonate, 0.4-1 part of liquid paraffin, 1-2 parts of calcium stearate and 1-4 parts of lubricant;

the hard polyvinyl chloride raw material also comprises 10-30 parts by weight of an elastomer;

the elastomer is a chloroethylene-n-butyl acrylate-methyl methacrylate copolymer elastomer, and a chloroethylene-n-butyl acrylate-styrene elastomer in a mass ratio of (1-2): (1-2).

2. The industrial wastewater treatment apparatus according to claim 1, wherein: the material of the air supply pipe is high-density polyethylene.

3. The industrial wastewater treatment apparatus according to claim 1, wherein: the cup body is provided with a mounting sleeve for connecting the output shaft, and a screw is matched between the mounting sleeve and the output shaft; fins are welded on the outer wall of the cup body.

4. The industrial wastewater treatment apparatus according to claim 1, wherein: the air supply pipe is provided with a one-way valve; a hollow disk body is arranged in the treatment tank, air outlet holes are uniformly distributed on the upper surface of the disk body, a connecting rod is welded between the disk body and the treatment tank, and the disk body is provided with a connecting pipe butted with the air supply pipe; a cleaning pipe for discharging precipitated sludge is arranged at the lower end of the treatment tank, and a sealing cover is in threaded connection with the pipe orifice of the cleaning pipe; the exhaust pipe is connected with a branch air inlet pipe, and a second ball valve is installed at the position of the branch air inlet pipe.