CN107698010B

CN107698010B - pH adjusting mechanism for water treatment

Info

Publication number: CN107698010B
Application number: CN201710880152.9A
Authority: CN
Inventors: 杜忠华
Original assignee: Dongguan Hua Xin Da Beverage Co ltd
Current assignee: DONGGUAN HUA XIN DA BEVERAGE Co.,Ltd.
Priority date: 2017-09-26
Filing date: 2017-09-26
Publication date: 2020-08-14
Anticipated expiration: 2037-09-26
Also published as: CN107698010A

Abstract

The invention provides a pH adjusting mechanism for water treatment, and belongs to the technical field of water treatment production. It includes interconnect's from inhaling formula neutralizing mechanism and buffer subassembly, from inhaling the formula neutralizing mechanism including connecting the flowmeter from inhaling the inlet pipe, be equipped with check valve subassembly on inhaling the inlet pipe, check valve subassembly connect acid neutralizer storage tank and alkaline neutralizer storage tank through first stop valve and second stop valve respectively, the buffer subassembly including the jar body that is used for holding the buffer, the jar body including the main part jar that is equipped with first liquid conduction pipe, and the lid jar that is equipped with second liquid conduction pipe, main part jar and lid jar spiro union, the buffer at the internal of jar is honeycomb briquette column structure. The invention can be continuously and directly connected with water to be treated, and can play a role in adjusting the pH of the water.

Description

pH adjusting mechanism for water treatment

Technical Field

The invention belongs to the technical field of water treatment, relates to water treatment equipment, and particularly relates to a pH adjusting mechanism for water treatment.

Background

As is well known, the central environmental protection supervision group carries out strong environmental protection inspection to all regions recently, and a large number of enterprises which do not meet the requirements of discharge are shut down, wherein the enterprises comprise enterprises which do not reach the pH value of discharged sewage, the environmental protection supervision strength is not available before, even workshop-type bean curd shops are required to stop working and settle because the pH value of discharged water does not reach the standard, and the environmental protection supervision group is the top bar for ordinary workers who maintain life by using the small business.

However, the environmental protection is large, the environmental protection problem is not solved and sustainable development cannot be achieved due to the relation between offspring and descendants, and although economic losses exist for common workers at present, the environmental protection problem must be paid attention to since the matter is good from long-term. Most of the existing pH adjusting devices are automated, the structure is complex, the number of parts is large, the selling price is not trivial, and common workers cannot bear the pH adjusting device.

Especially, pH adjusting equipment, most of which is automatic equipment, uses electronic detection in large quantity, realizes automatic adjustment of the feeding amount of a neutralizing agent by matching various precise pumps and electronic valves, so that the neutralizing agent is neutralized with waste materials to be treated, although the sensitivity is higher, the price is not beautiful, and common consumers or workshops cannot bear the effect at all.

In the prior art, people usually adjust the pH value of the wastewater by adding acid and alkali so as to enable the pH value of the wastewater to reach about 7, but in the process of adjusting by adding acid and alkali, the pH value after neutralization is difficult to be properly adjusted to a required degree, so that multiple adjustments are needed, on one hand, time and energy are wasted, and on the other hand, the adjustment is not practical in the process of treating large-batch wastewater. If a proper amount of buffer is added in the adjusting process to form a buffer solution, the pH value can be accelerated to be adjusted to be within an acceptable range. The buffer solution is a mixed solution composed of weak acid and salt thereof, weak base and salt thereof, and can offset and reduce the influence of external strong acid or strong base on the pH value of the solution to a certain extent, so that the pH value of the solution is kept relatively stable.

The buffer solution is prepared by a buffer, such as 10.9g Na₂HPO₄·12H₂O and 2.3g NaH₂PO₄·H₂O is added with water to a constant volume of 1000mL to obtain a buffer solution with a pH of 7. The buffer solution is also used in the field of environmental protection, and is used for stabilizing the discharged water at a certain pH value so as to enable the pH value of the discharged water to meet the requirement.

The existing buffering agents are all solid powder and are easy to dissolve, but if the buffering agents are prepared into a buffering solution to be mixed with discharged water, a large amount of water is needed, and a step of preparing the buffering solution is added in the process. Therefore, if the water to be treated can be directly passed through the buffer agent, and the pH value of the water can be adjusted after the buffer agent is dissolved, the treatment cost can be greatly reduced.

Disclosure of Invention

The invention aims to solve the problems and provides a pH adjusting mechanism for water treatment.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pH adjusting mechanism for water treatment, which comprises a self-suction neutralizing mechanism and a buffer component which are connected with each other,

the self-priming neutralizing mechanism comprises a self-priming feeding pipe connected with a flowmeter, a check valve assembly is arranged on the self-priming feeding pipe, the check valve assembly is respectively connected with an acid neutralizing agent storage tank and an alkaline neutralizing agent storage tank through a first stop valve and a second stop valve,

the buffer component comprises a tank body for containing a buffer, the tank body comprises a main body tank provided with a first liquid conducting pipe and a cover body tank provided with a second liquid conducting pipe, the main body tank is in threaded connection with the cover body tank, the buffer in the tank body is of a honeycomb-coal-shaped structure,

the bottom that the main part jar is close to first liquid conduction pipe and the bottom that the lid jar is close to second liquid conduction pipe are equipped with a filter screen respectively.

In foretell pH adjustment mechanism for water treatment, the both ends of inhaling the inlet pipe be feed end and discharge end, the flowmeter is connected to the feed end, is equipped with between feed end and discharge end from inhaling the passageway, the passageway of inhaling certainly be located the lateral wall from inhaling the inlet pipe, thereby the internal diameter from inhaling the inlet pipe diminish gradually by the direction of feed end toward the discharge end and form conical runner, thereby the passageway of inhaling certainly be close to the discharge end.

In the above pH adjusting mechanism for water treatment, the check valve assembly includes a valve seat, the valve seat is connected to the self-suction channel and is in sealing connection with the self-suction channel, an annular check plate is arranged in the valve seat, a sealing ring is arranged at one end of the check plate close to the self-suction channel, a sealing plate is arranged on the sealing ring in a pressing manner, the sealing plate is connected with a spring in a stretching state, and the spring is fixed on the valve seat.

In the pH adjusting mechanism for water treatment, the buffer is cylindrical, the buffer is internally provided with a flow guide channel through which liquid can pass, the flow guide channel is provided with a plurality of annular array arrangement channels, so that the buffer forms a honeycomb briquette-shaped structure, the axial line of the flow guide channel is parallel to the first liquid conducting pipe and the second liquid conducting pipe, the tank body is cylindrical and is provided with an accommodating cavity matched with the shape and size of the buffer, the wastewater storage tank is provided with a first pH meter, the self-suction neutralizing mechanism is connected with a liquid-liquid mixer, the liquid-liquid mixer is connected with the first liquid conducting pipe, and the outlet of the liquid-liquid mixer is provided with a second pH meter.

In the above pH adjusting mechanism for water treatment, the buffering agent is composed of Na₂HPO₄·12H₂O、NaH₂PO₄·H₂O, PAM and water.

In the pH adjusting mechanism for water treatment, the buffer comprises the following components in parts by mass:

in foretell pH adjustment mechanism for water treatment, the buffer make by the presser, the presser include a shaping section of thick bamboo, a plurality of pore-forming posts of fixedly connected with in the shaping section of thick bamboo, shaping section of thick bamboo top seal and swing joint have a pressure handle, pressure handle insert in the shaping section of thick bamboo, pressure handle end fixing has a shaping board that is located a shaping section of thick bamboo inside, the shaping board on have with the perforation of pore-forming post one-to-one, shaping board and pore-forming post swing joint, the bottom of a shaping section of thick bamboo is the opening form and rotates and be connected with a shaping closing plate that can be with the opening closure of shaping section of thick bamboo bottom.

In foretell pH adjustment mechanism for water treatment, the pore-forming post be the annular array setting in a shaping section of thick bamboo, and after the shaping closing plate rotates to and becomes barrel bottom sealed, pore-forming socle portion withstands shaping closing plate top just, the pore-forming post for being hollow cylindric and pore-forming socle portion sealed, the dense discharge opening that has of pore-forming post outer wall, the pressure handle on still be connected with one and be located the outside pressure flitch of a shaping section of thick bamboo, press to be equipped with on the flitch a plurality of and pore-forming post one-to-one press the material post, press the material post insert in the pore-forming post and with pore-forming post swing joint.

In foretell pH adjustment mechanism for water treatment, pore-forming column top extend the shaping section of thick bamboo top and be the opening form, during the pressure material post inserted pore-forming column from pore-forming column's top, pore-forming column pass through connecting pipe interconnect, and one of them pore-forming column is connected with one and can be to the mechanism of adding water in the pore-forming column.

In the above pH adjusting mechanism for water treatment, the water adding mechanism includes a water adding pipe connected to one of the pore-forming columns, the water adding pipe extends out of the forming cylinder and is connected with a water adding barrel, a stop valve is arranged on a pipeline of the water adding pipe extending out of the forming cylinder, and a connecting pipe is connected between every two adjacent pore-forming columns so as to form a meshed connecting structure between the pore-forming columns.

In foretell pH adjustment mechanism for water treatment, the pore-forming post in be equipped with the sealing washer, the pressure material post insert in the pore-forming post with pore-forming post sealing connection, the discharge opening be located the sealing washer below.

In the above pH adjusting mechanism for water treatment, the bottom of the forming cylinder is provided with a first sealing part in the shape of an inverted frustum cone, the top of the forming sealing plate is provided with a second sealing part in the shape of a frustum cone, the shape and the size of the second sealing part are matched with those of the first sealing part, so that the second sealing part can be just clamped into the first sealing part, and the forming sealing plate is rotatably connected with the bottom of the forming cylinder through a pin shaft.

Compared with the prior art, the invention has the advantages that:

1. can be continuously and directly connected with water to be treated, and can adjust the pH of the water.

2. The buffering agent has reasonable compatibility, the pressing device has simple structure and ingenious design, can process the honeycomb slow-release buffering agent, and can finish the internal water adding in the working process to ensure that the buffering agent realizes self-bonding.

3. The acid or alkaline neutralization solution is fed in a self-absorption mode, and a special anti-corrosion pump is not needed, so that the cost is obviously reduced.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic view of the structure of a press.

Fig. 2 is a schematic structural diagram of the pore-forming column in the forming cylinder.

FIG. 3 is a schematic view of another embodiment of the press.

Fig. 4 is an enlarged view of fig. 1 at a.

Fig. 5 is a schematic view of the structure of a pore-forming column.

FIG. 6 is a schematic cross-sectional view of a buffer.

FIG. 7 is a schematic diagram of the structure of the buffer assembly.

Fig. 8 is a schematic structural view of the present invention.

Fig. 9 is a schematic structural view of the self-priming neutralization mechanism.

Fig. 10 is another schematic construction of the self-priming neutralization mechanism.

In the figure, a forming cylinder 1, a pore-forming column 2, a pressing handle 3, a forming plate 4, a forming sealing plate 5, a discharge hole 6, a pressing plate 7, a pressing column 8, a connecting pipe 9, a water adding mechanism 10, a water adding pipe 11, a stop valve 12, a sealing ring 13, a first sealing part 14, a second sealing part 15, a pin shaft 16, a water adding barrel 17, a buffering agent 20, a tank body 21, a first liquid conduit 22, a main body tank 23, a second liquid conduit 24, a reflux valve 24a, a reflux pump 24b, a cover body tank 25, a diversion channel 26, a waste water storage tank 30, a feeding pump 31, a flow meter 32, a buffering agent component 33, a first pH meter 34, a liquid-liquid mixer 35, a second pH meter 36, a self-suction neutralizing mechanism 40, a self-suction feed pipe 41, a one-way valve component 42, a first stop valve 43, a second stop valve 44, an acid neutralizing agent storage tank 45, an alkaline neutralizing agent storage tank 46, a feed, Valve seat 50, fixed plate 50a, one-way plate 51, sealing washer 52, sealing plate 53, spring 54, filter screen 100.

Detailed Description

Example 1

As shown in fig. 7 and 8, a pH adjusting mechanism for water treatment includes a self-priming neutralizing mechanism 40 and a buffer assembly 33 connected with each other, the self-priming neutralizing mechanism 40 comprises a self-priming feeding pipe 41 connected with the flow meter 32, a one-way valve assembly 42 is arranged on the self-priming feeding pipe 41, the one-way valve assembly 42 is connected to an acid neutralizer storage tank 45 and a basic neutralizer storage tank 46 through a first shut-off valve 43 and a second shut-off valve 44, the buffer assembly 33 comprises a tank body 21 for containing the buffer 20, the tank body 21 comprises a main body tank 23 provided with a first liquid conduit 22 and a cover body tank 25 provided with a second liquid conduit 24, the main body tank 23 is in threaded connection with the cover body tank 25, and a filter screen 100 is respectively arranged at the bottom of the main body tank 23 close to the first liquid conduction pipe 22 and the bottom of the cover body tank 25 close to the second liquid conduction pipe 24. In this embodiment, the filter screen 100 is a stainless steel screen with a 100-mesh aperture, and the stainless steel is 316L.

Referring to fig. 9, the self-priming neutralization mechanism 40 includes a self-priming feed pipe 41 connected to the flow meter 32, and a check valve assembly 42 is disposed on the self-priming feed pipe 41, and the check valve assembly 42 is connected to an acid neutralizer storage tank 45 and an alkaline neutralizer storage tank 46 through a first stop valve 43 and a second stop valve 44, respectively.

Specifically, the two ends of the self-priming feeding pipe 41 are a feeding end 47 and a discharging end 48, the feeding end 47 is connected with the flow meter 32, between the feed end 47 and the discharge end 48, a self-priming channel 49 is provided, said self-priming channel 49 being located on the side wall of the self-priming feed pipe 41, the inner diameter of the self-priming feeding pipe 41 is gradually reduced from the feeding end 47 to the discharging end 48 so as to form a conical flow passage, the self-priming passageway 49 is adjacent the discharge end 48, the check valve assembly 42 includes a valve seat 50, the valve seat 50 is connected with the self-suction channel 49 and is hermetically connected with the self-suction channel 49, an annular one-way plate 51 is arranged in the valve seat 50, a sealing ring 52 is arranged at one end of the one-way plate 51 close to the self-suction channel 49, a sealing plate 53 is pressed on the sealing ring 52, a spring 54 in a stretching state is connected to the sealing plate 53, and the spring 54 is fixed on the valve seat 50. The feed end 47 is connected with the flow meter 32, and the discharge end 48 is connected with the liquid-liquid mixer 35.

In another embodiment of the check valve assembly 42, as shown in fig. 10, a ring-shaped fixing plate 50a is further disposed on the valve seat 50, and one end of the spring 54 is connected to the fixing plate 50a, and the other end is connected to the sealing plate 53.

A gap is formed between the sealing plate and the inner wall of the valve seat, and the outer diameter of the sealing plate is smaller than the inner diameter of the self-suction channel. The feeding pump 31 pumps the waste liquid into the self-priming feeding pipe 41 through the flow meter, the flow rate is read through the flow meter 32, when the waste liquid flows through the interior of the self-priming feeding pipe 41, negative pressure is formed in the self-priming channel 49, the sealing plate 53 is separated from the sealing ring 9 after overcoming the pulling force of the spring 54, a neutralization solution enters the self-priming channel 49 to be mixed with the waste liquid in the self-priming feeding pipe 41, the mixture is uniformly mixed and neutralized after passing through the liquid-liquid mixer 35, the pH value of the neutralized liquid is detected by the second pH meter 36, if the pH value reaches the standard, the neutralized liquid is directly discharged after passing through the buffer component 33, and if the pH value does not reach the standard, the return valve. And then the corresponding amount of the waste liquid and the neutralizing agent is adjusted by the first stop valve 43 and the second stop valve 44, so that the pH value of the discharged liquid reaches the standard.

It will be understood by those skilled in the art that valves, such as stop valves, ball valves, diaphragm valves, etc., may be provided between the flow meter 32 and the feed pump 31 to regulate the flow rate to balance the amount of wastewater buffered by the buffer assembly 33. It will also be appreciated by those skilled in the art that the wastewater in the wastewater tank 30 may be pre-neutralized by the addition of acid or base.

The waste water to be treated is firstly stored in a waste water storage tank 30 and then pumped by a feeding pump 31 or directly pumped into a buffering agent component 33 by the feeding pump 31, and the buffering agent component 33 releases a buffering agent to adjust the pH value of the waste water so as to meet the discharge requirement.

Referring to fig. 6, the buffer 20 is cylindrical, the buffer 20 has a flow guide channel 26 for allowing liquid to pass through, the flow guide channel 26 has a plurality of flow guide channels 26 arranged in an annular array so that the buffer forms a honeycomb-coal-shaped structure, the axial line of the flow guide channel 26 is parallel to the first liquid conducting pipe 22 and the second liquid conducting pipe 24, the tank 21 is cylindrical and has a containing cavity matched with the shape and size of the buffer 20, the wastewater storage tank 30 is provided with a first pH meter 34, the self-suction neutralizing mechanism 40 is connected with a liquid-liquid mixer 35, the liquid-liquid mixer 35 is connected with the first liquid conducting pipe 22, and the outlet of the liquid-liquid mixer 35 is provided with a second pH meter 36.

The second pH meter 36 is used to detect the pH value of the treated wastewater, and the first pH meter 34 can detect the pH value of the wastewater in the wastewater storage tank 30.

The buffer is composed of Na₂HPO₄·12H₂O、NaH₂PO₄·H₂O, PAM and water. PAM is polyacrylamide. Specifically, the buffering agent comprises the following components in parts by mass:

the buffer 20 is made by a pressing device, as shown in fig. 1, the pressing device comprises a forming tube 1, a plurality of hole forming columns 2 are fixedly connected in the forming tube 1, the top of the forming tube 1 is sealed and movably connected with a pressing handle 3, the pressing handle 3 is inserted into the forming tube 1, a forming plate 4 located inside the forming tube 1 is fixed at the end of the pressing handle 3, through holes corresponding to the hole forming columns 2 one by one are formed in the forming plate 4, the hole forming columns 2 penetrate through the through holes, the forming plate 4 can slide up and down along the outer walls of the hole forming columns 2, the forming plate 4 is movably connected with the hole forming columns 2, and the bottom of the forming tube 1 is in an opening shape and is rotatably connected with a forming sealing plate 5 capable of sealing the opening at the bottom of the forming tube 1.

Referring to fig. 3, the bottom of the forming cylinder 1 has a first sealing portion 14 in the shape of an inverted frustum, and the top of the forming sealing plate 5 has a second sealing portion 15 in the shape of a frustum, and the second sealing portion 15 is matched with the first sealing portion 14 in shape and size so that the second sealing portion 15 can be just clamped into the first sealing portion 14. The forming sealing plate 5 is rotatably connected with the bottom of the forming cylinder 1 through a pin 16. The bottom of the bored column 2 is flush with the top of the first seal 14.

Referring to fig. 2, the hole forming pillars 2 are arranged in the forming cylinder 1 in an annular array, and when the forming sealing plate 5 rotates to seal with the bottom of the forming cylinder 1, the bottom of the hole forming pillars 2 just prop against the top of the forming sealing plate 5.

The preferred scheme, it is shown in combination figure 5, pore-forming post 2 is sealed for being hollow cylindric and pore-forming post 2 bottom, and pore-forming post 2 outer wall gathers has discharge opening 6, pressure handle 3 on still be connected with one and be located the outside pressure flitch 7 of one shaping section of thick bamboo 1, be equipped with a plurality of pressure flitchs 8 with pore-forming post 2 one-to-one on the pressure flitch 7, press during the flitch 8 inserted pore-forming post 2 and with pore-forming post 2 swing joint. The top of the pore-forming column 2 extends out of the top of the forming cylinder 1 and is in an opening shape, and the pressing column 8 is inserted into the pore-forming column 2 from the top of the pore-forming column 2.

Can pour into at pore-forming post 2 and weigh good water, press the material in-process water from discharge opening 6 by pressing the material post 8 evenly extrude, moist PAM makes PAM inflation form viscidity, presses the material in-process powder by PAM self viscidity bonding, the buffer sound construction that obtains.

More preferably, automatic water adding is adopted, the pore-forming columns 2 are connected with each other through a connecting pipe 9, and one of the pore-forming columns 2 is connected with a water adding mechanism 10 capable of adding water into the pore-forming column 2.

Referring to fig. 4, the water feeding mechanism 10 includes a water feeding pipe 11 connected to one of the pore-forming columns 2, the water feeding pipe 11 is located above the forming plate 4, the water feeding pipe 11 may be a flexible pipe or a hard pipe, the water feeding pipe 11 extends out of the forming cylinder 1 and is connected to a water feeding barrel 17, and a stop valve 12 is disposed on a pipe of the water feeding pipe 11 extending out of the forming cylinder 1. The stop valve 12 is opened, the water in the water adding barrel 17 can flow into the pore-forming column 2, and the water adding is stopped after the stop valve is closed.

A connecting pipe 9 is connected between every two adjacent pore-forming columns 2, so that a reticular connecting structure is formed between the pore-forming columns 2.

Be equipped with sealing washer 13 in the pore-forming post 2, press material post 8 to insert in the pore-forming post 2 with pore-forming post 2 sealing connection, discharge opening 6 be located sealing washer 13 below.

The working process of the invention is as follows:

a feeding pump 31 of the waste water storage tank 30 and a flow meter 32 connected with the feeding pump 31, wherein the flow meter 32 is sequentially connected with a self-suction neutralizing mechanism 40 and a buffer component 33. The second liquid conduit 24 is also connected to a waste water tank 30 via a return valve 24a and a return pump 24b, and the second liquid conduit 24 is additionally connected to a drain line.

As above for Na₂HPO₄·12H₂O、NaH₂PO₄·H₂And (3) proportioning O and PAM, weighing, mixing and sieving to obtain buffer powder for later use.

Opening the molding sealing plate 5, pressing the handle 3 to pull the molding plate 4 to the position of the water feeding pipe 11, adding the buffer powder into the molding cylinder 1 until the buffer powder is flush with the top of the first sealing part 14, rotating the molding sealing plate 5 to cover the bottom of the molding cylinder 1, and placing the molding cylinder 1 on the ground.

Opening the stop valve 12, adding water into the net water adding barrel 17, closing the stop valve 12 after adding a proper amount of water accounting for about 5-10% of the weight of the buffer powder, pressing the pressing handle 3 to make the forming plate 4 move downwards, and simultaneously driving the pressing column 8 downwards by the forming sealing plate 5 to discharge the water in the hole forming column 2Squeezing out in the mouth 6, squeezing out water slowly during the process of lowering the handle 3, wetting the buffer powder, wetting and expanding PAM, and making Na have viscosity₂HPO₄·12H₂O、NaH₂PO₄·H₂And O and PAM are bonded, the pressing of the forming plate 4 is stopped after the forming plate is pressed down for one third to one half of the distance, the pressing handle is pressed by hands for 3 five to ten minutes, then the forming sealing plate 5 is opened, and the pressing handle 3 is pressed down to extrude the material in the forming cylinder 1, so that the honeycomb slow-release buffer is obtained.

The buffering agent is put into the main body tank 23, the cover body tank 25 is in threaded connection with the main body tank 23, the first liquid conducting pipe 22 is connected with the water inlet pipe, the second liquid conducting pipe 24 is connected with the liquid mixer 35, Na in the buffering agent is obtained after water flow pumped by the feeding pump 31 passes through the buffering agent 20₂HPO₄·12H₂O and NaH₂PO₄·H₂The O is synchronously dissolved, and plays a role in buffering the pH value of water. Because the buffer agent contains PAM, PAM expands after meeting water and adds Na₂HPO₄·12H₂O、NaH₂PO₄·H₂The O is wrapped and can not be dissolved in water immediately, thereby achieving the slow release effect.

The feed pump 31 is started, the waste water flows into the self-priming feed pipe 41, a negative pressure is generated in the self-priming channel 49 according to the principle of fluid dynamics, and the sealing plate 53 is opened, so that the acid neutralizing agent or the alkaline neutralizing agent can be selectively added according to the pH value in the waste water storage tank, and the first stop valve 43 or the second stop valve 44 is selectively opened to neutralize the waste water.

It will be understood by those skilled in the art that the neutralizing agent used will vary depending on the pH of the waste stream, e.g., the waste stream is acidic and the neutralizing agent is a basic sodium bicarbonate solution or sodium hydroxide solution, e.g., the waste stream is basic and the neutralizing agent is an acidic phosphoric acid solution or hydrochloric acid solution or sulfuric acid solution, etc.

The neutralized waste water is mixed uniformly by a liquid-liquid mixer, and then flows into the tank body 1 and flows through the flow guide channel 26 and Na of the buffering agent 20₂HPO₄·12H₂O and NaH₂PO₄·H₂O dissolves and PAM swells to form a high-viscosity polymerThe gel achieves the effect of slowing down the dissolution of phosphate and plays a role of slow release, the pH value is buffered after water flow is mixed with the phosphate, the liquid-liquid mixer 35 plays a role of uniform mixing, the pH value of the adjusted wastewater is detected by the second pH meter 36, and the flow of the wastewater is adjusted through detection data.

In this example, 1kg of the buffer agent was used to treat 10 to 20 tons of wastewater by adjusting the pH of the wastewater in the wastewater tank 30 to 6 to 8 in advance, the treatment flow rate corresponding to 1kg of the buffer agent was 5 to 10T/hr, and the pH of the treated wastewater was 6.8 to 7.2.

Example 2

The present embodiment is basically the same in structure and operation principle as embodiment 1, except that,

the buffering agent comprises the following components in parts by mass:

example 3

the buffering agent comprises the following components in parts by mass:

example 4

the buffering agent comprises the following components in parts by mass:

example 5

the buffering agent comprises the following components in parts by mass:

example 6

the buffering agent comprises the following components in parts by mass:

the specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the molding barrel 1, the hole-forming column 2, the pressing handle 3, the molding plate 4, the molding sealing plate 5, the discharge hole 6, the pressing plate 7, the pressing column 8, the connecting tube 9, the water-adding mechanism 10, the water-adding tube 11, the stop valve 12, the sealing ring 13, the first sealing portion 14, the second sealing portion 15, the pin 16, the water-adding barrel 17, the buffer 20, the tank body 21, the first liquid conduit 22, the main body tank 23, the second liquid conduit 24, the return valve 24a, the return pump 24b, the lid body tank 25, the diversion channel 26, the waste water storage tank 30, the feed pump 31, the flow meter 32, the buffer assembly 33, the first pH meter 34, the liquid mixer 35, the second pH meter 36, the self-priming neutralizing mechanism 40, the self-priming feed tube 41, the check valve assembly 42, the first stop valve 43, the second stop valve 44, the acid neutralizing agent storage tank 45, the alkaline storage tank neutralizing agent 46, the feed end 47, Discharge end 48, self-priming channel 49, valve seat 50, fixing plate 50a, one-way plate 51, sealing ring 52, sealing plate 53, spring 54, etc., without excluding the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention and they are to be interpreted as any additional limitation which is not in accordance with the spirit of the present invention.

Claims

1. A pH adjusting mechanism for water treatment is characterized by comprising a self-suction neutralizing mechanism (40) and a buffer component (33) which are connected with each other,

the self-priming neutralizing mechanism (40) comprises a self-priming feeding pipe (41) connected with the flowmeter (32), a one-way valve assembly (42) is arranged on the self-priming feeding pipe (41), the one-way valve assembly (42) is respectively connected with an acid neutralizer storage tank (45) and an alkaline neutralizer storage tank (46) through a first stop valve (43) and a second stop valve (44),

the buffer component (33) comprises a tank body (21) for containing a buffer (20), the tank body (21) comprises a main body tank (23) provided with a first liquid conducting pipe (22) and a cover body tank (25) provided with a second liquid conducting pipe (24), the main body tank (23) is in threaded connection with the cover body tank (25),

a filter screen (100) is respectively arranged at the bottom of the main body tank (23) close to the first liquid conducting pipe (22) and the bottom of the cover body tank (25) close to the second liquid conducting pipe (24),

the both ends of inhaling inlet pipe (41) be feed end (47) and discharge end (48), flowmeter (32) is connected in feed end (47), be equipped with between feed end (47) and discharge end (48) and inhale passageway (49), inhale passageway (49) be located inhale the lateral wall of inlet pipe (41) certainly, thereby the internal diameter of inhaling inlet pipe (41) become little gradually towards the direction of discharge end (48) by feed end (47) and form conical runner, inhale passageway (49) certainly and be close to discharge end (48), discharge end (48) connect main part jar (23),

the check valve assembly (42) comprises a valve seat (50), the valve seat (50) is connected with a self-suction channel (49) and is in sealing connection with the self-suction channel (49), an annular check plate (51) is arranged in the valve seat (50), one end, close to the self-suction channel (49), of the check plate (51) is provided with a first sealing ring (52), a sealing plate (53) is arranged on the first sealing ring (52) in a pressing mode, the sealing plate (53) is connected with a spring (54) in a stretching state, and the spring (54) is fixed on the valve seat (50),

the buffer (20) is cylindrical, the buffer (20) is internally provided with a flow guide channel (26) which can allow liquid to pass through, the flow guide channel (26) is provided with a plurality of flow guide channels (26) which are arranged in an annular array so as to enable the buffer to form a honeycomb briquette-shaped structure, the axial lead of the flow guide channel (26) is parallel to the first liquid conducting pipe (22) and the second liquid conducting pipe (24), the tank body (21) is cylindrical and is provided with an accommodating cavity which is matched with the shape and the size of the buffer (20),

the buffer (20) is made by a pressing device, the pressing device comprises a forming cylinder (1), a plurality of hole forming columns (2) are fixedly connected in the forming cylinder (1), the top of the forming cylinder (1) is sealed and movably connected with a pressing handle (3), the pressing handle (3) is inserted into the forming cylinder (1), a forming plate (4) located inside the forming cylinder (1) is fixed to the end of the pressing handle (3), through holes corresponding to the hole forming columns (2) one to one are formed in the forming plate (4), the forming plate (4) is movably connected with the hole forming columns (2), and the bottom of the forming cylinder (1) is in an opening shape and is rotatably connected with a forming sealing plate (5) capable of sealing the opening at the bottom of the forming cylinder (1).

2. The pH adjusting mechanism for water treatment according to claim 1, wherein the pore-forming columns (2) are arranged in the forming cylinder (1) in an annular array, and after the forming sealing plate (5) rotates to seal with the bottom of the forming cylinder (1), the bottom of the pore-forming columns (2) just props against the top of the forming sealing plate (5), the pore-forming columns (2) are hollow cylindrical and the bottom of the pore-forming columns (2) is sealed, and discharge holes (6) are densely distributed on the outer wall of the pore-forming columns (2).

3. The pH adjusting mechanism for water treatment according to claim 2, wherein the pressing handle (3) is further connected with a pressing plate (7) located outside the forming cylinder (1), the pressing plate (7) is provided with a plurality of pressing columns (8) corresponding to the pore-forming columns (2) one by one, and the pressing columns (8) are inserted into the pore-forming columns (2) and are movably connected with the pore-forming columns (2).

4. The pH adjusting mechanism for water treatment according to claim 1, wherein the top of the pore-forming column (2) extends out of the top of the forming cylinder (1) and is open, the pressing column (8) is inserted into the pore-forming column (2) from the top of the pore-forming column (2), the pore-forming columns (2) are connected with each other through a connecting pipe (9), and one of the pore-forming columns (2) is connected with a water adding mechanism (10) capable of adding water into the pore-forming column (2).

5. The pH adjusting mechanism for water treatment according to claim 4, wherein the water adding mechanism (10) comprises a water adding pipe (11) connected with one of the pore-forming columns (2), the water adding pipe (11) extends out of the forming cylinder (1) and is connected with a water adding barrel (17), a stop valve (12) is arranged on a pipeline of the water adding pipe (11) extending out of the forming cylinder (1), and a connecting pipe (9) is connected between every two adjacent pore-forming columns (2) so as to form a net-shaped connecting structure between the pore-forming columns (2).

6. The pH adjusting mechanism for water treatment according to claim 3, wherein a second sealing ring (13) is arranged in the pore forming column (2), the pressing column (8) is inserted into the pore forming column (2) and is connected with the pore forming column (2) in a sealing way, and the discharge hole (6) is positioned below the second sealing ring (13).

7. The pH adjusting mechanism for water treatment according to claim 1, wherein the bottom of the forming cylinder (1) has a first sealing portion (14) in the shape of an inverted frustum cone, the top of the forming sealing plate (5) has a second sealing portion (15) in the shape of a frustum cone, the second sealing portion (15) is matched with the first sealing portion (14) in shape and size so that the second sealing portion (15) can be just clamped into the first sealing portion (14), and the forming sealing plate (5) is rotatably connected with the bottom of the forming cylinder (1) through a pin shaft (16).