CN202246330U - Device for treating waste gas absorbing liquid in scouring pad production - Google Patents

Abstract

The utility model relates to a treatment device for absorbing liquid waste gas from scouring pad production after absorbing and treating the waste gas produced in scouring pad production. It solves the defect that the waste water treatment device in the prior art is not suitable for the treatment of waste gas absorption liquid produced by scouring pads, including physical and chemical pretreatment devices and biological method treatment devices. The physical and chemical pretreatment devices include sand filter towers and resin adsorption columns in series and The Fenton tank connected to the outlet pipe of the resin adsorption column, the biological treatment device includes a hydrolytic acidification tank connected to the Fenton tank, a contact oxidation tank connected to the hydrolytic acidification tank, and the treatment device also includes a sludge treatment device connected to each treatment device. The waste gas absorption liquid produced by the scouring pad is treated by the waste gas absorption liquid treatment device. The particulate matter and organic matter in the absorption liquid are treated by physical and chemical pretreatment and biological method to remove pollutants in the wastewater. The treatment effect is good. The treated wastewater can Meet the national emission standards.

Description

Waste gas absorption liquid treatment device for scouring pad production

technical field

The utility model relates to a treatment device for waste water, in particular to a waste gas absorption liquid treatment device for scouring pad production after absorbing and treating the waste gas produced in the production of scouring pads.

Background technique

The scouring pads include industrial scouring pads, civilian scouring pads, sandy scouring pads, etc., which are widely used in decoration, metal grinding and polishing, daily washing and other fields.

In the production process of scouring pads, the main processes include glue spraying and drying. These two processes will emit a large amount of exhaust gas during operation. The exhaust gas generated in the glue spraying process mainly contains a certain amount of particulate matter and a small amount of organic matter such as phenol and formaldehyde. The exhaust gas generated in the drying process has a high temperature and contains a large amount of organic matter such as phenol, formaldehyde, alcohols, and a small amount of particulate matter.

Traditional waste gas treatment will produce more wastewater, which contains a large amount of particulate matter and organic matter, which is equivalent to absorbing impurities and harmful substances in the waste gas into the waste water to keep the waste gas clean and environmentally friendly and discharged. If the absorbed waste water is directly discharged, it will cause a lot of pollution and bring great harm to the environment. Therefore, there is a need for a device for treating the absorption liquid produced after waste gas treatment in the production process of scouring pads.

Technicians have also studied a variety of waste gas treatment methods, such as:

The Chinese Patent Office announced a CN201545762U patent on August 11, 2010, titled an organic wastewater device, including pulse water distributors, anaerobic reaction tanks, aerobic reaction tanks and membrane module teeth with membrane modules. The water outlet of the pulse water distributor, the anaerobic reaction tank and the aerobic reaction tank are connected in sequence, the bottom of the aerobic reaction tank communicates with the bottom of the membrane module pool, and the top of the membrane module pool flows out. However, this device decomposes organic matter through anaerobic and aerobic bacteria, and for the first time, the wastewater is directly put into the anaerobic reaction tank. After a period of time, the wastewater with high concentration cannot be effectively treated, which affects the subsequent treatment of wastewater. , but also affect the overall treatment effect of wastewater. Although the device has multiple treatment functions, it does not distinguish the source of exhaust gas during treatment, and cannot process the absorption liquid, so it is not suitable for the treatment of waste gas with scouring pads.

Contents of the invention

The utility model solves the defect that the wastewater treatment device in the prior art is not suitable for the treatment of the waste gas absorption liquid produced by the scouring pad, and provides a method for different concentrations of the absorption liquid produced after the waste gas produced in the scouring pad production is treated. The scouring pad production waste gas absorption liquid treatment device for treatment and final unified treatment.

The technical solution adopted by the utility model to solve the technical problem is: a waste gas absorption liquid treatment device for scouring pad production, including a physical and chemical pretreatment device and a biological method treatment device, a substance classification pool in front of the physical and chemical pretreatment device, a physical and chemical The pretreatment device includes a sand filter tower, a resin adsorption column connected in series and a Fenton tank connected to the outlet pipe of the resin adsorption column. The biological treatment device includes a hydrolytic acidification tank connected to the Fenton tank, a contact oxidation tank connected to the hydrolytic acidification tank, and a treatment device It also includes a sludge treatment device connected to each treatment device. The waste gas generated in different processes of scouring pad production is processed by their corresponding waste gas treatment systems, mainly to treat the waste gas generated in the glue spraying process and the waste gas generated in the oven process. The waste gas absorbing liquid generated during the two waste gas treatment systems It can be treated by the waste gas absorption liquid treatment device, which improves the treatment effect of waste gas and makes the waste gas meet the national emission standards. At the same time, the absorption liquid also meets the national emission standards after treatment; a large amount of particles and a small amount of phenol, formaldehyde, etc. are produced in the glue spraying process. Volatile organic compounds. The waste gas generated in the oven process contains more volatile organic compounds such as phenol, formaldehyde and isopropanol and a small amount of particulate matter. Divide them into one category, and divide those with low concentration into another category. After a series of physical and chemical treatments in the air flotation tank, sand filter tower, resin adsorption column and Fenton tank, the effluent from the classification tank is treated in the hydrolytic acidification tank and contact oxidation tank. After biological treatment, the discharge standard is met. The combination of physical and chemical pretreatment and biological treatment can effectively degrade COD, phenol, formaldehyde and other pollutants in the absorption liquid. The overall operation is simple, the treatment effect is stable, and the investment is relatively low. Management control is also more convenient.

As preferably, the treatment device also includes a secondary settling tank connected to the rear of the contact oxidation tank and a tertiary reaction tank connected with the secondary settling tank, the tertiary reaction tank is connected to the tertiary settling tank, the tertiary settling tank is connected to the outlet, Both the tank and the third-stage sedimentation tank are vertical-flow sedimentation tank structures. The bottom of the second sedimentation tank and the third-stage sedimentation tank are equipped with sludge buckets and sludge discharge pipes, and the sludge discharge pipes are connected to the sludge treatment device. After the secondary settling tank, a tertiary reaction tank and a tertiary sedimentation tank are set up, which mainly play the role of insurance, especially if the previous treatment effect is not good, the secondary treatment can be carried out, so as to ensure that the waste water is discharged up to the standard.

As a preference, the classification pool is divided into a high-concentration wastewater regulating pool connected to the first-stage alkali washing tower in the oven exhaust gas treatment and a second-stage alkali washing tower and a third-stage water spray tower connected to the oven exhaust gas treatment. Glue spraying waste gas treatment The cyclone water film dust collector and the low-concentration wastewater regulating tank of the alkali washing tower, the high-concentration wastewater regulating tank and the low-concentration wastewater regulating tank are jointly connected to the air flotation tank. There are more particulate matter and organic matter in the exhaust gas generated by the scouring pad oven process. The oven exhaust gas treatment device has a first-level alkali washing tower and a second-level alkali washing tower. The concentration of the waste gas absorption liquid produced by the two is different. A regulating tank will cause the wastewater pretreatment effect to fail to meet the standard, affect the subsequent treatment or increase the difficulty of the subsequent process, bring a greater burden to the equipment, shorten the service life of the equipment, and reduce the final wastewater treatment effect And increase the overall treatment cost, so the quality and classification of wastewater from different sources can improve the treatment effect of wastewater.

As a preference, the effluent of the air flotation tank is divided into two paths, one path is connected to the sand filter tower, and the other path is connected to the hydrolysis acidification pool, wherein the path corresponding to the highly concentrated wastewater regulating tank in the fractionation pool is connected to the sand filter tower, corresponding to the mass fractionation pool One of the low-concentration wastewater regulating tanks is connected to the hydrolytic acidification tank. The suspended matter in the wastewater is removed in the air flotation tank, and distributed according to the concentration of the wastewater, and transferred to the sand filter tower, resin adsorption column, Fenton tank and hydrolytic acidification tank for treatment.

As a preference, the water inlet of the sand filter tower is connected with a first transition water tank, the water outlet of the first transition water tank is provided with a lift pump, the water inlet of the resin adsorption column is connected with a second transition water tank, and the water outlet of the second transition water tank A lift pump is provided, the outlet water of the resin adsorption column is connected to the Fenton pool, and the inlet water of the Fenton pool is connected to the outlet water of the air flotation tank through a three-way pipe fitting. The combination of resin adsorption column and Fenton pool can effectively reduce the concentration of phenol and formaldehyde in the wastewater entering the biochemical treatment, thereby improving the effect of biochemical treatment.

As preferably, the bottom of the sand filter tower and the bottom of the resin adsorption column are connected with a backwash water inlet pipe, and the top of the sand filter tower and the top of the resin adsorption column are connected with a backwash water outlet pipe, and the backwash water outlet pipe is adjusted with high-concentration wastewater. The pool is connected. Sand filter towers and resin adsorption columns treat wastewater for a long time and will absorb more impurities. In order to maintain the treatment effect, it is necessary to regularly backwash the sand filter tower and resin adsorption columns to remove internal impurities, and the backwash obtained after backwashing The water contains a large amount of impurities and cannot be discharged directly, so it is returned to the high-concentration wastewater adjustment tank and returned to the treatment process.

As preferably, the Fenton pool is divided into a first reaction zone, a second reaction zone and a precipitation zone, an overflow hole is provided at the upper end of the second reaction zone, the bottom of the first reaction zone communicates with the second reaction zone, and the second reaction zone passes through The overflow hole is connected to the sedimentation area, and the outlet water of the sedimentation area is connected to the intermediate pool, and the intermediate pool is connected to the hydrolysis and acidification pool through the lift pump.

As a preference, both the hydrolytic acidification tank and the contact oxidation tank are provided with combined fillers, the bottom of the hydrolysis acidification tank is connected to the contact oxidation tank, and an overflow weir is arranged at the outlet of the upper end of the contact oxidation tank, and the overflow weir is connected to the central cylinder of the secondary sedimentation tank . Under the action of hydrolytic acidification bacteria, the macromolecular refractory organic matter in the wastewater is decomposed into small molecular easily degradable organic matter, improving the effect of wastewater treatment.

Preferably, the treatment device also includes an automatic dosing device and an aeration device, and the automatic dosing device includes a PAC dosing device, a PAM dosing device, a ferrous sulfate dosing device, a dilute hydrochloric acid dosing device, a hydrogen peroxide dosing device and liquid The alkali dosing device, the PAC dosing device is connected to the air flotation tank and the tertiary reaction tank, the PAM dosing device is connected to the air flotation tank, and the dilute hydrochloric acid dosing device is connected to the high-concentration wastewater regulating tank in the classification tank and the first stage in the Fenton tank. The first reaction area, the ferrous sulfate dosing device and the hydrogen peroxide dosing device are connected to the first reaction area of the Fenton pool, the liquid alkali dosing device is connected to the second reaction area of the Fenton pool, the aeration device includes a Roots blower, connected to the hydrolysis The microporous aeration pipe of the acidification pond and the contact oxidation pond and the perforated aeration pipe connecting the classification pond and the Fenton pond. The dosing device connected to the air flotation tank is mainly a PAC dosing device and a PAM dosing device. PAC and PAM are added to the inside of the air flotation tank, and the coagulation air flotation process is adopted to effectively remove suspended matter and collect scum; The perforated aeration tube and the perforated aeration tube can effectively uniform the water quality, prevent the precipitation of impurities, and at the same time play the role of micro-oxygenation.

Preferably, the sludge treatment device includes a sludge tank, a sludge pump and a plate-and-frame filter press, the sludge pump is connected to the sludge tank, the plate-and-frame filter press is connected to the sludge pump, and the sludge treatment device is connected to the classification pool, Fenton tank, secondary sedimentation tank and tertiary sedimentation tank. The sludge treatment device collects and treats the sludge generated by wastewater treatment in a unified manner, which is more environmentally friendly.

The beneficial effects of the utility model are: the waste gas absorption liquid produced by the scouring pad is processed by the waste gas absorption liquid treatment device, and the particulate matter and organic matter in the absorption liquid are treated by physicochemical pretreatment and biological method to remove pollutants in the waste water, and the treatment effect is improved. Well, the treated wastewater can meet the national discharge standards.

Description of drawings

Fig. 1 is a schematic structural view of a waste gas absorption liquid treatment system of the present invention;

In the figure: 1. Roots blower, 2. PAC dosing device, 3. PAM dosing device, 4. Ferrous sulfate dosing device, 5. Dilute hydrochloric acid dosing device, 6. Hydrogen peroxide dosing device, 7. Liquid Alkali dosing device, 8. Plate and frame filter press, 9. Special pump for sludge, 10. First sludge tank, 11. Second sludge tank, 12. Lift pump, 13. Intermediate tank, 14. Fenton Pool sludge pump, 15, sedimentation area, 16, Fenton pool, 17, second reaction area, 18, perforated aeration pipe, 19, first reaction area, 20, resin adsorption column, 21, float level gauge . Combined packing, 30. Microporous aeration pipe, 31. Hydrolysis acidification tank, 32. Contact oxidation tank, 33. Sludge pump, 34. Secondary sedimentation tank, 35. Tertiary reaction tank, 36. Tertiary sedimentation tank, 37 , Outlet.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through specific embodiments and in conjunction with the accompanying drawings.

Embodiment: A waste gas absorption liquid treatment system (see accompanying drawing 1), including a high-concentration wastewater regulating pool 27 connected to a first-stage alkali washing tower, a cyclone water film dust collector connected to an alkali washing tower, a second-stage alkali washing tower and a third The low-concentration wastewater regulating tank 28 of the first-grade water spray tower, the air flotation tank 26 connected to the high-concentration wastewater regulating tank and the low-concentration wastewater regulating tank, the hydrolysis acidification tank 31 connected to the air flotation tank and the contact oxidation tank 32 connected to the hydrolysis acidification tank , the secondary settling tank 34 connected to the contact oxidation tank, the tertiary reaction tank 35 connected to the secondary settling tank, the tertiary settling tank 36 connected to the tertiary reaction tank.

A perforated aeration pipe 18 and a lift pump 12 are installed at the bottom of the high-concentration wastewater regulating tank 27 . The PAC dosing device 2 is connected to the pipeline in front of the lift pump, the PAM dosing device 3 is connected to the pipeline behind the lift pump, the outlet of the lift pump is connected to the inlet of the air flotation tank 26 , and the sludge discharge pipe of the air flotation tank is connected to the first sludge tank 10 . The outlet pipe of the air flotation tank is connected with two three-way fittings 25, one of which is connected to the first transition tank 24, and the other three-way fitting is directly connected to the hydrolysis acidification tank. The first transition tank 24 is provided with a lift pump 12, the outlet of the lift pump is connected to the inlet of the sand filter tower 23, the outlet pipe of the sand filter tower 23 is connected to the second transition tank 22, and the backwash outlet pipe of the sand filter tower 23 is connected to the high-concentration wastewater regulating tank 27 The second transition tank 22 is provided with a lifting pump 12, and the outlet of the lifting pump is connected with the inlet of the resin adsorption column 20. Both the first transition water tank and the second transition water tank are provided with float level gauges 21 . The outlet pipe of the resin adsorption column is connected to the Fenton pool 16, and the backwash outlet pipe of the resin adsorption column is connected to the high-concentration wastewater regulating pool. The dilute hydrochloric acid dosing device 5 , the ferrous sulfate dosing device 4 and the hydrogen peroxide dosing device 6 are connected to the first reaction zone 19 , and the liquid alkali dosing device 7 is connected to the second reaction zone 17 . The bottom of the first reaction zone communicates with the second reaction zone, and the upper end of the second reaction zone is provided with an overflow hole, which communicates with the precipitation zone through the overflow hole. The water outlet pipe of the sedimentation area is connected to the middle pool 13, and a Fenton pool mud pump 14 is arranged on the upper part of the sedimentation area. The middle pool 13 is provided with a lift pump, and the outlet of the lift pump is connected to the hydrolysis acidification pool 31 .

A perforated aeration pipe 18 is installed at the bottom of the low-concentration wastewater regulating pool 28, equipped with a lift pump 12, the PAC dosing device 2 is connected to the pipeline in front of the lift pump, the PAM dosing device 3 is connected to the pipeline behind the lift pump, and the outlet of the lift pump is connected to the air flotation tank 26 The inlet is connected, the sludge discharge pipe of the air flotation tank is connected with the second sludge tank 11 , and the outlet pipe of the air flotation tank is connected to the hydrolysis acidification tank 31 .

A microporous aeration head 30 is installed at the bottom of the hydrolytic acidification tank 31, and a combined filler 29 is hung in the tank, and a through hole is provided at the bottom of the tank wall to be connected with the contact oxidation tank 32. A microporous aeration head 30 is installed at the bottom of the contact oxidation tank 32, a combined filler 29 is hung in the tank, an overflow weir is provided at the outlet, and the outlet pipe is connected with the central cylinder of the secondary sedimentation tank 34, which is a vertical flow sedimentation tank The bottom of the secondary sedimentation tank is equipped with a sludge bucket and a sludge discharge pipe. The sludge discharge pipe extends out of the tank and connects with the inlet of the sludge pump 33. The outlet pipeline of the sludge pump 33 is respectively connected to the hydrolysis acidification tank 31 and the second sludge pool11. The outlet of the secondary settling tank 34 is provided with an overflow weir, and the outlet pipe is connected to the third-stage reaction tank 35. The bottom of the third-stage reaction tank 35 is equipped with a perforated aeration pipe, and the outlet pipe is connected to the central cylinder of the third-stage sedimentation tank 36. The third-stage sedimentation tank It is a vertical flow sedimentation tank structure, with a mud bucket and a mud discharge pipe installed at the bottom, and the other end of the mud discharge pipe is connected to the second sludge tank.

The bottom of the first sludge tank 10 is provided with a mud hopper and a sludge discharge pipe. The outlet of the sludge discharge pipe is connected to the inlet of the sludge special pump 9. The sludge special pump is provided with a return pipe, and the outlet is connected to the feed port of the plate and frame filter press 8. The press filtrate discharge pipe is connected to the high-concentration wastewater regulating tank 27. A mud hopper and a mud discharge pipe are arranged at the bottom of the second sludge tank, and the outlet of the mud discharge pipe is connected with the inlet of the sludge special pump 9, and the special sludge pump is provided with a return pipe, and the outlet is connected with the feed port of the plate and frame filter press 8, and The filtrate discharge pipe is connected to the low-concentration wastewater regulating tank 28.

The wastewater in the high-concentration wastewater regulating tank 27 is sent to the air flotation tank 26 through the lifting pump 12, and the first sludge tank 10, the effluent flows to the first transition tank 24, and is sent to the sand filter tower 23 by the lifting pump 12 to remove impurities. The water flows to the second transition tank 22, and is sent to the resin adsorption column 20 by the lifting pump, and most of the phenol in the waste water is removed through the adsorption of the macroporous resin, and the effluent flows to the Fenton pool 16, to the first reaction zone of the Fenton pool. Fenton agent is added to the second reaction zone to decompose macromolecular organic matter into small molecular organic matter through advanced oxidation and effectively remove formaldehyde. Under the action of the sludge pump, the sludge is discharged into the first sludge pool 10, and the effluent flows to the intermediate pool 13 to provide stable water volume and water pressure for subsequent treatment.

The wastewater in the low-concentration wastewater regulating tank 28 is sent to the air flotation tank 26 through the lift pump 12, and PAC and PAM chemicals are added to coagulate, and the suspended solids and a small amount of COD in the water are removed, and the scum is discharged into the second sludge tank 11 , the effluent flows to the hydrolysis acidification tank 31.

The combined filler 29 is hung inside the hydrolytic acidification tank 31, and the microporous aeration head 30 is installed at the bottom, which plays the role of agitation and uniform water quality through micro-aeration. Under the action of hydrolytic acidification bacteria, the macromolecular organic matter that is difficult to degrade in the wastewater is decomposed The small molecule organic matter that is easy to degrade flows into the contact oxidation tank 32, and the combined filler 29 is hung in the contact oxidation tank 32, and the microporous aeration head 30 is installed at the bottom, and oxygen is supplied to the contact oxidation tank by the Roots blower 1, and the aerobic bacteria Under the action, organic matter is decomposed and COD is effectively removed. The effluent from the contact oxidation tank 32 flows to the secondary sedimentation tank 34. The secondary sedimentation tank 34 is a vertical flow sedimentation tank structure. After the mud and water are separated, part of the sludge flows back to the hydrolytic acidification tank 31, and the remaining sludge is discharged into the second sludge tank 11. The supernatant flows to the tertiary reaction tank 35. In the tertiary reaction tank 35, flocculant PAC is added as appropriate according to the water quality, and the effluent flows to the tertiary sedimentation tank 36. The tertiary sedimentation tank 36 is vertical flow sedimentation Pool structure, after the mud-water separation, the sludge is discharged into the second sludge pool 11, and the supernatant flows through the outlet 37 and is discharged up to the standard.

The sludge in the first sludge tank 10 is sent to the plate-and-frame filter press 8 via the special sludge pump 9 for press filtration, and the press filter liquid is discharged into the high-concentration wastewater regulating tank 27 . The sludge in the second sludge tank 11 is sent to the plate and frame filter press 8 for pressure filtration through the special sludge pump 9 , and the filter press liquid is discharged into the low-concentration wastewater regulating tank 28 .

The above-described embodiment is only a preferred solution of the utility model, and does not limit the utility model in any form. There are other variations and modifications under the premise of not exceeding the technical solution described in the claims. .

Claims (10)

1. scouring pad process gas absorption liquid controlling device; Comprise physico-chemical pretreatment device and biological process treatment unit; It is characterized in that controlling device also comprises the branch qualitative classification pond that is in before the physico-chemical pretreatment device; The physico-chemical pretreatment device comprises placed in-line sand tower and resin absorption post and is connected the Fenton pond of resin adsorption column rising pipe; The biological process treatment unit comprises the hydrolysis acidification pool that connects the Fenton pond, the contact-oxidation pool that connects hydrolysis acidification pool, and controlling device also comprises the sludge treatment equipment that connects each treatment unit.

2. scouring pad process gas absorption liquid controlling device according to claim 1; It is characterized in that controlling device also comprises second pond that is connected in the contact-oxidation pool rear and the third order reaction pond that links to each other with second pond; The third order reaction pond connects three grades of settling tanks, and three grades of settling tanks connections efflux mouth, and second pond and three grades of settling tanks are the vertical sedimentation basin structure; The bottom of second pond and three grades of settling tanks is provided with sludge bucket and shore pipe, and shore pipe links to each other with sludge treatment equipment.

3. scouring pad process gas absorption liquid controlling device according to claim 1; It is characterized in that branch qualitative classification pond in being divided into the high-concentration waste water equalizing tank that connects the one-level soda-wash tower in the baking oven off gas treatment and being connected the baking oven off gas treatment secondary soda-wash tower and three grades of water spray columns and spray cyclonic water film deduster and the low concentration wastewater equalizing tank of soda-wash tower in the glue off gas treatment, high-concentration waste water equalizing tank and low concentration wastewater equalizing tank are connected to air flotation pool jointly.

4. scouring pad process gas absorption liquid controlling device according to claim 3; The water outlet that it is characterized in that air flotation pool is divided into two-way; One the tunnel connects sand tower; Another road connects hydrolysis acidification pool, and wherein correspondence is divided one tunnel connection sand tower of the height concentration wastewater equalization pond in the qualitative classification pond, the corresponding road connection hydrolysis acidification pool that divides the low concentration wastewater equalizing tank in the qualitative classification pond.

5. scouring pad process gas absorption liquid controlling device according to claim 1; Water inlet place that it is characterized in that sand tower is connected with the first transition tank; Water outlet place of the first transition tank is provided with lift pump, and water inlet place of resin absorption post is connected with the second transition tank, and water outlet place of the second transition tank is provided with lift pump; The water outlet of resin absorption post connects the Fenton pond, and the water inlet in Fenton pond connects the water outlet of air flotation pool through tee pipe fitting.

6. according to claim 1 or 2 or 3 or 5 described scouring pad process gas absorption liquid controlling devices; Its characteristic all is connected with the back flushing water inlet pipe in the bottom of sand tower and the bottom of resin absorption post; The top of the top of sand tower and resin absorption post all is connected with the back flushing rising pipe, and the back flushing rising pipe links to each other with the high-concentration waste water equalizing tank.

7. according to claim 1 or 2 or 3 or 5 described scouring pad process gas absorption liquid controlling devices; It is characterized in that the Fenton pond is divided into first reaction zone, second reaction zone and settling region; Position, second reaction zone upper end is provided with overflow weir, and first reaction zone bottom is communicated with second reaction zone, and second reaction zone is communicated with the settling region through overflow weir; The settling region water outlet connects intermediate pool, and intermediate pool connects hydrolysis acidification pool through lift pump.

8. according to claim 1 or 2 or 3 or 5 described scouring pad process gas absorption liquid controlling devices; It is characterized in that being provided with combined stuffing in hydrolysis acidification pool and the contact-oxidation pool; The bottom of hydrolysis acidification pool is communicated with contact-oxidation pool; The exit, upper end of contact-oxidation pool is provided with overflow weir, and overflow weir connects the central tube of second pond.

9. according to claim 1 or 2 or 3 or 5 described scouring pad process gas absorption liquid controlling devices; It is characterized in that controlling device also comprises automatic medicine adding apparatus and aerating apparatus; Automatic medicine adding apparatus comprises PAC chemicals dosing plant, PAM chemicals dosing plant, ferrous sulfate chemicals dosing plant, Hydrogen chloride chemicals dosing plant, ydrogen peroxide 50 chemicals dosing plant and liquid caustic soda chemicals dosing plant; The PAC chemicals dosing plant connects air flotation pool and third order reaction pond; The PAM chemicals dosing plant connects air flotation pool; High-concentration waste water equalizing tank in the Hydrogen chloride chemicals dosing plant connection branch qualitative classification pond and first reaction zone in the Fenton pond; The ferrous sulfate chemicals dosing plant is connected first reaction zone in Fenton pond with the ydrogen peroxide 50 chemicals dosing plant, the liquid caustic soda chemicals dosing plant connects second reaction zone in Fenton pond, and aerating apparatus comprises roots blower, connects the micropore aeration pipe of hydrolysis acidification pool and contact-oxidation pool and is connected branch qualitative classification pond and the boring aeration pipe in Fenton pond.

10. according to claim 1 or 2 or 3 or 5 described scouring pad process gas absorption liquid controlling devices; It is characterized in that sludge treatment equipment comprises sludge sump, sludge pump and plate-and-frame filter press; Sludge pump connects sludge sump; Plate-and-frame filter press connects sludge pump, and sludge treatment equipment connects and divides qualitative classification pond, Fenton pond, second pond and three grades of settling tanks.