CN105753252B - A kind of electroplating waste processing equipment containing ambrose alloy - Google Patents

Abstract

A nickel-containing copper electroplating wastewater treatment device, including a wastewater regulating tank, an adsorption sedimentation tank, an aerated oxidation tank, and an aerobic filter tower, and the wastewater adjustment tank, the adsorption sedimentation tank, an aerated oxidation tank, and an aerobic filter tower are connected in sequence; the adsorption The sedimentation tank includes a mixed adsorption area and a sedimentation area. The upper middle part of the mixed adsorption area is equipped with an adsorption sedimentation tank inlet pipe, the upper part of the mixed adsorption area is equipped with a steel slag adsorbent addition metering system, and the middle part of the mixed adsorption area is equipped with an agitator; aeration The lower part of the oxidation tank is equipped with an aeration oxidation tank inlet pipe, the lower part of the aeration oxidation tank inlet pipe is equipped with a water distribution triangle cone, and the lower part of the water distribution triangle cone is equipped with an aeration control system; the aerobic filter tower includes a filter tower top cover, a well Oxygen filter tower water inlet pipe, aerobic filter tower cloth water pipe, filter material, filter material support frame, air inlet and aerobic filter tower outlet pipe.

Description

A nickel-containing copper electroplating wastewater treatment device

technical field

The invention relates to the technical field of wastewater treatment, in particular to a nickel-containing copper electroplating wastewater treatment device.

Background technique

The discharge of electroplating wastewater in my country is huge every year, accounting for one-tenth of the total discharge of industrial wastewater, and electroplating wastewater is toxic and harmful, with high pH and high content of heavy metals. If it is not treated in time and discharged into nature, it will cause irreparable serious damage to the environment. Pollution.

Copper plating process and nickel plating process are the two most common processes, and generally use the same equipment, so copper ions and nickel ions exist in the same electroplating wastewater at the same time.

There are many methods for treating nickel-containing copper electroplating wastewater, among which the adsorption method is the preferred method for treating nickel-containing copper electroplating wastewater because of its simple and convenient operation, low treatment cost and good treatment effect. For the adsorption method, it is the key to find a cheap and efficient adsorbent material to replace the expensive activated carbon and ion exchange resin. Therefore, in recent years, cheap, efficient and environmentally friendly adsorbent materials have gradually attracted attention.

Steel slag belongs to industrial solid waste and faces disposal problems.

Contents of the invention

The purpose of the present invention is to solve the problem of the treatment of nickel-copper electroplating wastewater, solve the problem of steel slag disposal, provide a nickel-copper electroplating wastewater treatment device, and use steel slag for the adsorption of nickel and copper ions.

The technical solution adopted by the present invention to solve the technical problem is: a nickel-containing copper electroplating wastewater treatment device, including a regulating tank, an adsorption sedimentation tank, an aeration oxidation tank and an aerobic filter tower, a regulating tank, an adsorption sedimentation tank, an aeration The oxidation pool and the aerobic filter tower are connected in sequence.

The regulating pond includes a regulating pond inlet pipe and a regulating pond outlet pipe for regulating the pH value, water quality and water quantity of the waste water. The waste water enters the regulating tank from the water inlet pipe of the regulating pool, flows out from the water outlet pipe of the regulating pool, and enters the water inlet pipe of the adsorption sedimentation tank.

The adsorption sedimentation tank includes a mixed adsorption area and a sedimentation area.

The upper middle part of the mixed adsorption area is provided with an adsorption sedimentation tank inlet pipe, and the upper part of the mixed adsorption area is equipped with a steel slag adsorbent addition metering system; the middle and lower part of the mixed adsorption area is provided with a stirrer.

The preparation process of steel slag adsorbent is as follows:

①Use a 20-100 mesh metal sieve to screen the steel slag fragments;

②Put the sieved steel slag into a drying box and dry it at 150-200 degrees Celsius for one hour to prepare the steel slag adsorbent.

A dividing plate is arranged between the mixed adsorption zone and the sedimentation zone, and the barrier plate and the inner wall of the adsorption sedimentation tank form a waste water flow channel that enters the sedimentation zone as waste water, and an adsorption sedimentation tank three-phase separator is provided at the outlet of the sedimentation zone. The upper part of the outlet of the sedimentation area is provided with an adsorption sedimentation tank overflow weir, the bottom of the sedimentation area is designed as a conical structure, and a sediment discharge valve is set at the bottom of the conical structure. The overflow weir of the adsorption sedimentation tank is connected to the outlet pipe of the adsorption sedimentation tank, and the outlet pipe of the adsorption sedimentation tank is connected to the inlet pipe of the aeration oxidation tank.

The lower part of the aeration oxidation tank is provided with an aeration oxidation tank inlet pipe, and the lower part of the aeration oxidation tank water inlet pipe is provided with a water distribution triangular cone; the lower part of the water distribution triangular cone is provided with an aeration control system, and the aeration The gas control system includes an aeration pan, a blower and a dissolved oxygen measurement and control device; the aeration pan is a microporous aeration pan with micropores evenly arranged therein, and the aeration pan is connected to the blower through an aeration pipe, and the blower is set Outside the aeration oxidation tank, a dissolved oxygen measurement and control device is installed on the upper part of the aeration oxidation tank and under the water surface of the wastewater, and the dissolved oxygen measurement and control device regulates the work of the blower according to the oxygen capacity; the upper part of the inlet pipe of the aeration oxidation tank is filled with fillers ; The outlet of the aeration oxidation tank is equipped with an overflow weir of the aeration oxidation tank. The overflow weir of the aeration oxidation tank is connected to the water outlet pipe of the aeration oxidation tank, and the water outlet pipe of the aeration oxidation tank is connected to the water inlet pipe of the aerobic filter tower.

The aerobic filter tower includes a filter tower top cover, an aerobic filter tower water inlet pipe, an aerobic filter tower cloth water pipe, a filter material, a filter material support frame, an air inlet and an aerobic filter tower outlet pipe; the aerobic filter tower adopts multiple Layer setting, the top of the filter tower is provided with a filter tower top cover, and an air outlet is left between the filter tower top cover and the tower body; the aerobic filter tower water inlet pipe is arranged under the filter tower top cover, and the aerobic filter tower water inlet pipe is connected to the aerobic filter tower. The tower cloth water pipe; the aerobic filter tower cloth water pipe is placed on the upper part of the filter material of the uppermost layer; the filter material is placed on the support frame of each layer of filter material, and the particle size of the filter material gradually becomes smaller from the upper layer to the lower layer; each layer of filter material The support frame of the filter material in the tower is designed as an inverted trapezoidal drawer. On the one hand, it enhances ventilation and avoids odor. On the other hand, it is convenient to observe and replace the filter material. This layer of filter material can be pulled out and replaced; the bottom of the filter tower is provided with an air inlet and an aerobic filter tower outlet pipe.

The water treated by the aerobic filter tower is discharged up to the standard through the outlet pipe of the aerobic filter tower.

A method for wastewater treatment using the above-mentioned nickel-containing copper electroplating wastewater treatment device has the following steps:

①Wastewater enters the regulating pond through the inlet pipe of the regulating pond to adjust the pH value, water quality and water quantity of the waste water.

② Then the wastewater enters the mixed adsorption area of the adsorption sedimentation tank through the inlet pipe of the adsorption sedimentation tank. The steel slag adsorbent is added to the metering system to add the steel slag adsorbent, and the agitator stirs and mixes the wastewater. The nickel and copper ions in the wastewater are adsorbed and absorbed by the steel slag adsorbent. .

③ Then the waste water enters the waste water channel of the sedimentation area, and the three-phase separator of the adsorption sedimentation tank realizes the separation of waste water and solids. The sediment sinks to the lower part of the sedimentation area under the action of gravity, and is discharged through the sediment discharge valve at the bottom, and the sediment The final wastewater enters the inlet pipe of the aeration oxidation tank through the overflow weir of the adsorption sedimentation tank and the outlet pipe of the adsorption sedimentation tank.

④ Wastewater enters the middle and lower part of the aeration oxidation tank through the inlet pipe of the aeration oxidation tank, and the water is evenly distributed under the action of the water distribution triangle cone. The aeration plate of the aeration oxidation tank produces a large number of microbubbles. Oxygen capacity regulates the work of the blower to ensure that the dissolved oxygen in the aeration oxidation tank water is greater than 2mg/L. The treated water in the aeration oxidation tank enters the water inlet pipe of the aerobic filter tower through the overflow weir of the aeration oxidation tank and the outlet pipe of the aeration oxidation tank.

⑤Wastewater enters the aerobic filter tower through the inlet pipe of the aerobic filter tower and the cloth pipe of the aerobic filter tower. Discharge up to the standard through the outlet pipe of the aerobic filter tower.

⑥ The saturated steel slag discharged from the sediment discharge valve of the adsorption sedimentation tank is the same as the original steel slag after dehydration, and is still a good engineering application material. The adsorbed waste slag can be immobilized and utilized by choosing reasonable and safe technical means , thereby reducing the pollution of heavy metal ions to the environment.

Description of drawings

Fig. 1 is the structural representation of the adsorption sedimentation tank of the embodiment of the present invention;

In Fig. 1: 1. Adsorption sedimentation tank, 1-1. Mixed adsorption area, 1-2. Sedimentation area, 1-3. Adsorption sedimentation tank inlet pipe, 1-4. Steel slag adsorbent addition metering system, 1-5. Agitator, 1-6. Partition plate, 1-7. Three-phase separator of adsorption sedimentation tank, 1-8. Overflow weir of adsorption sedimentation tank, 1-9. Sediment discharge valve.

Fig. 2 is a schematic structural diagram of an aeration oxidation tank according to an embodiment of the present invention.

In Fig. 2: 2. Aeration oxidation tank, 2-1. Aeration oxidation tank inlet pipe, 2-2. Water distribution triangle cone, 2-3. Aeration control system, 2-4. Filler, 2-5. Aeration oxidation tank overflow weir.

Fig. 3 is a schematic structural view of an aerobic filter tower according to an embodiment of the present invention.

Among Fig. 3: 3. aerobic filter tower, 3-1. filter tower top cover, 3-2. aerobic filter tower water inlet pipe, 3-3. aerobic filter tower cloth water pipe, 3-4. filter material, 3 -5. Support frame for filter material, 3-6. Air inlet, 3-7. Outlet pipe of aerobic filter tower.

Fig. 4 is a process flow diagram of an embodiment of the present invention.

Detailed ways

The present invention is described in further detail now in conjunction with accompanying drawing.

These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

Example

A nickel-containing copper electroplating wastewater treatment device as shown in Figures 1 to 4, including a regulating tank, an adsorption sedimentation tank 1, an aeration oxidation tank 2 and an aerobic filter tower 3, a regulating tank, an adsorption sedimentation tank 1, an aeration The oxidation pool 2 and the aerobic filter tower 3 are connected in sequence.

The regulating pond includes a regulating pond inlet pipe and a regulating pond outlet pipe for regulating the pH value, water quality and water quantity of the waste water. Wastewater enters the regulating tank from the inlet pipe of the regulating tank, and flows out from the outlet pipe of the regulating tank into the inlet pipe of the adsorption sedimentation tank.

The adsorption sedimentation tank 1 includes a mixed adsorption area 1-1 and a precipitation area 1-2.

The upper middle part of the mixed adsorption area 1-1 is provided with an adsorption sedimentation tank inlet pipe 1-3, and the upper part of the mixed adsorption area is provided with a steel slag adsorbent addition metering system 1-4; the middle and lower part of the mixed adsorption area is provided with a stirrer 1-5.

The preparation process of steel slag adsorbent is as follows:

① Use a 50-mesh metal sieve to screen the steel slag;

②Put the sieved steel slag into a drying oven, and dry it at 150 degrees Celsius for one hour to prepare the steel slag adsorbent.

A dividing plate 1-6 is arranged between the mixed adsorption zone 1-1 and the settling zone 1-2, and the dividing plate and the inner wall of the adsorption sedimentation tank form a waste water flow channel as waste water entering the settling zone, and a settling plate is set at the outlet of the settling zone There are adsorption sedimentation tank three-phase separator 1-7, the upper part of the outlet of the sedimentation area is provided with an adsorption sedimentation tank overflow weir 1-8, the bottom of the sedimentation area is designed as a conical structure, and a sediment discharge valve 1- 9. The overflow weir 1-8 of the adsorption sedimentation tank is connected to the outlet pipe of the adsorption sedimentation tank, and the outlet pipe of the adsorption sedimentation tank is connected to the inlet pipe 2-1 of the aeration oxidation tank.

The lower part of the aeration oxidation tank 2 is provided with an aeration oxidation tank inlet pipe 2-1, and the lower part of the aeration oxidation tank inlet pipe 2-1 is provided with a water distribution triangle cone 2-2; the water distribution triangle cone 2 The lower part of -2 is provided with an aeration control system 2-3, and the aeration control system 2-3 includes an aeration pan, a blower and a dissolved oxygen measurement and control device; further, the aeration pan is uniformly provided with micropores Microporous aeration disc. The aeration pan is connected to a blower through an aeration pipe, and the blower is arranged outside the aeration oxidation tank, and a dissolved oxygen measurement and control device is installed on the upper part of the aeration and oxidation tank and under the water surface of the wastewater, and the dissolved oxygen measurement and control device regulates the aeration according to the oxygen capacity. The air blower of the aeration oxidation tank works; the upper part of the water inlet pipe of the aeration oxidation tank has a filler 2-4 built in; the outlet of the aeration oxidation tank is arranged with an overflow weir 2-5 of the aeration oxidation tank. The overflow weir of the aeration oxidation tank is connected to the water outlet pipe of the aeration oxidation tank, and the water outlet pipe of the aeration oxidation tank is connected to the water inlet pipe 3-2 of the aerobic filter tower.

Aerobic filter tower 3 includes filter tower top cover 3-1, aerobic filter tower water inlet pipe 3-2, aerobic filter tower cloth water pipe 3-3, filter material 3-4, filter material support frame 3-5, air inlet 3-6 and the outlet pipe 3-7 of the aerobic filter tower; the aerobic filter tower 3 adopts multi-layer settings, and the top of the filter tower is provided with a filter tower top cover 3-1, and there is a gap between the filter tower top cover 3-1 and the tower body Air outlet; the aerobic filter tower water inlet pipe 3-2 is arranged under the filter tower top cover 3-1, and the aerobic filter tower water inlet pipe 3-2 is connected to the aerobic filter tower cloth water pipe 3-3; the aerobic filter tower cloth water pipe 3 -3 is placed on the upper part of the filter material on the top layer; filter material 3-4 is placed on the filter material support frame 3-5, and the particle size of the filter material gradually becomes smaller from the upper layer to the lower layer; the filter material of each layer of filter tower The support frame is designed as an inverted trapezoidal drawer. On the one hand, it enhances ventilation and avoids odor. On the other hand, it is convenient to observe and replace the filter material. Just pull out and replace; the bottom of the filter tower is provided with an air inlet 3-6 and an aerobic filter tower outlet pipe 3-7.

The water treated by the aerobic filter tower is discharged up to the standard through the outlet pipe 3-7 of the aerobic filter tower.

A method for wastewater treatment using the above-mentioned nickel-containing copper electroplating wastewater treatment device has the following steps:

①Wastewater enters the regulating pond through the inlet pipe of the regulating pond to adjust the pH value, water quality and water quantity of the waste water.

② Then the wastewater enters the mixed adsorption area 1-1 of the adsorption sedimentation tank through the outlet pipe of the regulating tank and the inlet pipe 1-3 of the adsorption sedimentation tank. The steel slag adsorbent is added to the metering system 1-4 to add the steel slag adsorbent. Stirring and mixing are carried out, and the nickel and copper ions in the wastewater are adsorbed and absorbed by the steel slag adsorbent.

③ Then the waste water enters the waste water channel of the sedimentation area, and the three-phase separator 1-7 of the adsorption sedimentation tank realizes the separation of waste water and solids, and the sediment sinks to the lower part of the sedimentation area under the action of gravity, and passes through the sediment discharge valve at the bottom 1-9 are discharged, and the settled wastewater enters the aeration oxidation tank inlet pipe 2-1 through the adsorption sedimentation tank overflow weir 1-8 and the adsorption sedimentation tank outlet pipe.

④ The waste water enters the middle and lower part of the aeration oxidation tank through the water inlet pipe 2-1 of the aeration oxidation tank, and the water is evenly distributed under the action of the water distribution triangle 2-2, and the aeration plate of the aeration oxidation tank generates a large number of micro-bubbles, The dissolved oxygen measurement and control device regulates the work of the blower according to the oxygen capacity to ensure that the dissolved oxygen in the aeration oxidation tank water is greater than 2mg/L. The water treated in the aeration oxidation tank enters the aerobic filter tower water inlet pipe 3-2 through the overflow weir 2-5 of the aeration oxidation tank and the outlet pipe of the aeration oxidation tank.

⑤Wastewater enters the aerobic filter tower through the aerobic filter tower water inlet pipe 3-2 and the aerobic filter tower cloth water pipe 3-3, and the air and waste water meet in the filter material 3-4 to undergo biochemical reactions, and the filter material filters the waste water at the same time , the water treated by the aerobic filter tower is discharged up to the standard through the outlet pipe 3-7 of the aerobic filter tower.

⑥ The saturated steel slag discharged from the sediment discharge valve of the adsorption sedimentation tank is the same as the original steel slag after dehydration, and is still a good engineering application material. The adsorbed waste slag can be immobilized and utilized by choosing reasonable and safe technical means , thereby reducing the pollution of heavy metal ions to the environment.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (1)

1. a kind of electroplating waste processing equipment containing ambrose alloy, it is characterised in that：Including regulating reservoir, adsorption precipitation pond (1), aerating oxidation Pond (2) and aerobic filter tower (3), regulating reservoir, adsorption precipitation pond (1), aeration oxidation pool (2) and aerobic filter tower (3) are sequentially communicated；

The regulating reservoir includes regulating reservoir water inlet pipe and regulating reservoir outlet pipe, for adjusting the pH value of waste water, water quality and water； Waste water enters regulating reservoir by regulating reservoir water inlet pipe, and adsorption precipitation pond water inlet pipe is exited by regulating reservoir outlet pipe；

The adsorption precipitation pond (1) includes mixing and absorption area (1-1) and settling zone (1-2)；

The middle and upper part in the mixing and absorption area (1-1) is provided with adsorption precipitation pond water inlet pipe (1-3), the top in mixing and absorption area It is provided with steel scoria adsorbent addition metering system (1-4)；The middle and lower part in mixing and absorption area is provided with blender (1-5)；

The preparation process of steel scoria adsorbent is：

1. slag particle is sieved using 20~100 mesh metallic screens；

2. the slag after screening is put into drying box, it is one hour dry under 150~200 degrees celsius, slag absorption is made Agent；

Partition board (1-6), partition board and the inner wall in adsorption precipitation pond are equipped between the mixing and absorption area (1-1) and settling zone (1-2) The waste water runner for entering settling zone as waste water is formed, the exit of settling zone is equipped with adsorption precipitation pond three phase separator (1-7), The outlet top of settling zone is equipped with adsorption precipitation pond overfalling weir (1-8), and settling zone bottom is designed to pyramidal structure, in pyramidal structure Bottom is provided with sediment discharge valve (1-9)；Adsorption precipitation pond overfalling weir (1-8) connection adsorption precipitation pond outlet pipe, absorption are heavy Shallow lake pond outlet pipe connection aeration oxidation pool water inlet pipe (2-1)；

Aeration oxidation pool (2) middle and lower part is provided with aeration oxidation pool water inlet pipe (2-1), the aeration oxidation pool water inlet pipe (2-1) lower part is equipped with water distribution pyrometric cone (2-2)；Water distribution pyrometric cone (2-2) lower part is equipped with aeration regulator control system (2-3), institute It states aeration regulator control system (2-3) and includes aeration plate, air blower and dissolved oxygen sensing regulation device；Further, the aeration plate It is the pore type aeration plate for being evenly arranged with micropore；The aeration plate connects air blower by aeration tube, and air blower is arranged on exposure Outside gas oxidation pond, the top of aeration oxidation pool and waste water underwater setting dissolved oxygen sensing regulation device, dissolved oxygen sensing regulation and control Device regulates and controls air blower work according to oxygen capacity；The aeration oxidation pool water inlet pipe top is built-in with filler (2-4)；Aerating oxidation The exit in pond is laid with aeration oxidation pool downflow weir (2-5)；Aeration oxidation pool downflow weir connects aeration oxidation pool outlet pipe, exposes Gas oxidation pond outlet pipe connects aerobic filter tower water inlet pipe (3-2)；

Aerobic filter tower (3) includes filter tower head cover (3-1), aerobic filter tower water inlet pipe (3-2), aerobic filter tower water distributor (3-3), filtrate (3-4), filtrate supporting rack (3-5), air inlet (3-6) and aerobic filter tower outlet pipe (3-7)；Aerobic filter tower (3) is set using multilayer It puts, top is equipped with filter tower head cover (3-1), and there are air outlets between tower body for filter tower head cover (3-1)；Under filter tower head cover (3-1) Face is equipped with aerobic filter tower water inlet pipe (3-2), and aerobic filter tower water inlet pipe (3-2) connects aerobic filter tower water distributor (3-3)；Aerobic filter tower Water distributor (3-3) is placed in topmost one layer of filtrate top；Filtrate (3-4) is placed on filtrate supporting rack (3-5), from upper strata To lower floor, the grain size of filtrate tapers into；The filtrate supporting rack of every layer of filter tower is designed to inverted trapezoidal drawer type, on the one hand strengthens logical Wind avoids generating foul smell, on the other hand convenient for observing and replacing filtrate, when this layer of filter clogging is serious, this layer of filtrate need to be taken out Go out to replace；The bottom of filter tower is equipped with air inlet (3-6) and aerobic filter tower outlet pipe (3-7)；

Treated that water passes through aerobic filter tower outlet pipe (3-7) qualified discharge for aerobic filter tower.