CN111253006A - Hospital wastewater comprehensive treatment device with zero sludge discharge and treatment method thereof - Google Patents

Hospital wastewater comprehensive treatment device with zero sludge discharge and treatment method thereof Download PDF

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CN111253006A
CN111253006A CN202010100732.3A CN202010100732A CN111253006A CN 111253006 A CN111253006 A CN 111253006A CN 202010100732 A CN202010100732 A CN 202010100732A CN 111253006 A CN111253006 A CN 111253006A
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sludge
unit
tank
chlorine dioxide
treatment
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郑俊
张德伟
郑杰
宁靓
程晓虎
程晓玲
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Huaqi Environment Protection Science And Technology Co ltd
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Huaqi Environment Protection Science And Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/818—Employing electrical discharges or the generation of a plasma
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/02—Biological treatment
    • C02F11/04—Anaerobic treatment; Production of methane by such processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/003—Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Physical Water Treatments (AREA)

Abstract

The invention discloses a hospital wastewater comprehensive treatment device with zero sludge discharge and a treatment method thereof, wherein the device is formed by sequentially connecting a chlorine dioxide disinfection tank, a three-grid septic tank, an adjusting tank, a closed ultraviolet disinfector, a multi-stage biochemical tank and a chlorine dioxide disinfection tank in series, and further comprises a waste gas treatment module; a cutting pump is arranged in the regulating tank; the waste gas treatment module consists of plasma equipment and activated carbon adsorption equipment; the multistage biochemical tank is formed by connecting a multistage A unit, a multistage O unit and a precipitation unit in series, part of sludge at a sludge outlet of the precipitation unit flows back to the front section of the multistage A unit through a sludge reflux pump and a sludge reflux pipe, and the rest part is used as residual sludge and discharged to a water inlet section of the three-grid septic tank; the effluent quality is superior to the standard of medical institution water pollutant discharge standard (GB18466-2016), the effluent quality is treated by the method, and the method has the advantages of no generation of residual sludge, grid slag and the like, and no generation of aerosol, sludge, grid slag, waste gas and other germ infection risks.

Description

Hospital wastewater comprehensive treatment device with zero sludge discharge and treatment method thereof
Technical Field
The invention belongs to the technical field of water pollution treatment, and particularly relates to a hospital wastewater comprehensive treatment device with zero sludge discharge and a treatment method thereof, in particular to a treatment device for zero sludge discharge of infectious hospital virus wastewater and a treatment method thereof.
Background
The hospital sewage is complex in quality, is mainly sewage of an integrated ward, contains a large amount of pathogens, disinfectants, organic solvents, heavy blood, tissue wastes, medicines, detergents and the like, and also contains a large amount of bacteria, infectious viruses, parasitic ova and other harmful substances. The existing hospital wastewater treatment method has many defects, most hospital wastewater is directly disinfected and discharged, a few hospital wastewater is disinfected through secondary biological treatment, the concentration of suspended matters is high after the wastewater is treated by a sewage well, bacteria and viruses are not easily inactivated by a disinfectant because of being attached to suspended flocs, and the existing biochemical treatment device has the defects that the treatment effect is not strong, the subsequent biochemical reaction is influenced by excessive pretreated disinfection residual chlorine, and the like; in recent years, virus epidemic situation occurs in some countries in the world, and because the virus in the infectious disease medical wastewater has high infectivity, live virus exists in the excrement of a patient to be diagnosed, and the risk of excrement transmission exists; and the exposed sludge, grid slag and aerosol generated in the aeration process in the wastewater treatment system also contain viruses, so that serious infection risks exist, so far, no hospital wastewater treatment device and treatment method for sludge zero discharge exist, and no hospital wastewater treatment device and treatment method for comprehensively considering virus risk transmission exist.
Disclosure of Invention
The invention aims to solve the problems and provides a hospital wastewater comprehensive treatment device with zero sludge discharge and a treatment method thereof, in particular to the treatment of infectious hospital virus wastewater.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hospital wastewater comprehensive treatment device with zero sludge discharge is formed by sequentially connecting sewage treatment equipment in a chlorine dioxide disinfection tank, a three-grid septic tank, an adjusting tank, a closed ultraviolet disinfector, a multi-stage biochemical tank and a chlorine dioxide disinfection tank in series, and further comprises a waste gas treatment module; a cutting pump is arranged in the regulating tank; the waste gas treatment module is formed by connecting plasma equipment and activated carbon adsorption equipment in series; the multistage biochemical pool is formed by connecting a multistage A unit, a multistage O unit and a precipitation unit in series, part of sludge at a sludge outlet of the precipitation unit flows back to the front section of the multistage A unit through a sludge reflux pump and a sludge reflux pipe, the rest part of sludge is discharged to a water inlet section of the three-grid septic tank as residual sludge, and fluidized bamboo charcoal fiber filler and suspended sludge are arranged in the multistage O unit.
Each sewage treatment device is of a closed structure, and collected waste gas is connected with the waste gas treatment module.
The multi-stage A unit at least comprises 3 stages of anaerobic tanks and anoxic tanks, and the multi-stage O unit at least comprises 2 stages of aerobic tanks.
The bamboo charcoal fiber filler is porous and cylindrical, the density of the bamboo charcoal fiber filler is close to that of water, the diameter of the bamboo charcoal fiber filler is 15-30 mm, and the height of the bamboo charcoal fiber filler is 6-10 mm.
The chlorine dioxide disinfection tank is composed of a chlorine dioxide reaction unit and a dechlorination unit which are connected in series, and also comprises a chlorine dioxide dosing system.
The comprehensive hospital waste water treating process with zero sludge discharge includes the following steps:
(1) a chlorine dioxide disinfection tank: waste water and excrement in hospitals are mixed with chlorine dioxide medicament added by a chlorine dioxide medicament adding system and then sequentially enter a chlorine dioxide reaction unit and a dechlorination unit; in the chlorine dioxide reaction unit, oxidation degradation, sterilization and wastewater disinfection treatment of solid organic matters are carried out, so that the biodegradability of the organic matters is improved, and meanwhile, the sludge is reduced; the residual chlorine is consumed in the dechlorination unit, so that the microbial activity and the growth metabolism of a subsequent three-grid septic tank are prevented from being inhibited; the treated wastewater enters a next-stage three-grid septic tank;
(2) three septic tanks: through three-grid manure treatment, manure and sludge are decomposed and fermented step by step, so that the total amount of solid organic matters is reduced; the septic tank enters a next-stage regulating tank after being treated;
(3) adjusting tank + cutting pump: sundries such as paper towels, cloth pieces, fibrous objects and the like in the wastewater collected by the regulating tank are crushed and decomposed by a cutting pump in the regulating tank, so that the problem of blockage of subsequent equipment is prevented, and the wastewater is lifted to a closed ultraviolet sterilizer for sterilization treatment;
(4) closed ultraviolet sterilizer: sterilizing the wastewater lifted by the cutting pump by a closed ultraviolet sterilizer, and feeding the treated wastewater into a multi-stage biochemical pool;
(5) a multi-stage biochemical pool: after the effluent of the closed ultraviolet sterilizer is mixed with the returned sludge, the mixture enters a multistage A unit to perform sludge self-respiration oxidation, hydrolysis reduction and sludge denitrification, so that the reduction of the sludge is realized, and the reduced sludge is converted into inorganic sludge; nitrifying and decarbonizing nitrogen in the incoming water through a multi-stage O unit, separating decarbonizing bacteria and nitrifying bacteria in different treatment O units through the multi-stage O unit and a fluidized bamboo charcoal fiber filler, and domesticating specific enhanced microorganisms to realize the enhanced treatment of a multi-stage biochemical pool; the sludge-water separation is realized through the precipitation unit, and the effluent enters the next-stage chlorine dioxide disinfection tank; the precipitated sludge is used as return sludge to flow back to the multistage A unit, and the part of the return sludge is used as residual sludge to be discharged to a three-grid septic tank for sludge reduction treatment; the zero discharge of the sludge of the system is realized through the self-respiration oxidation and hydrolysis of the sludge, the denitrification of the sludge and the fermentation and degradation of the three-grid septic tank of the multi-stage A unit;
(6) a chlorine dioxide disinfection tank: the multi-stage biochemical tank enters a chlorine dioxide reaction unit and a dechlorination unit for sterilization and dechlorination treatment, and the treated materials are discharged after reaching the standard;
(7) the collected waste gas collected by each treatment device is sterilized, sterilized and deodorized by a treatment process of serially connecting the plasma device and the activated carbon adsorption device, so that the standard emission of the gas is realized.
The effluent quality is superior to the standard of medical institution water pollutant discharge standard (GB18466-2016), the effluent quality is treated by the method, and the method has the advantages of no generation of residual sludge, grid slag and the like, and no generation of aerosol, sludge, grid slag, waste gas and other germ infection risks.
Drawings
FIG. 1 is a process flow of the comprehensive treatment of hospital wastewater with zero sludge discharge.
Fig. 2 is a structural schematic diagram of a hospital wastewater comprehensive treatment device with zero sludge discharge.
Wherein: hospital sewage and excrement 1, a pretreatment chlorine dioxide disinfection tank 2 (a chlorine dioxide reaction unit 2-1 and a dechlorination unit 2-2), a septic tank 3, an adjusting tank 4, a cutting pump 5, a closed ultraviolet disinfector 6, a multi-stage biochemical tank 7, A1, A2, A3 and A4 are four-stage anaerobic and anoxic units respectively, O1 and O2 are two-stage aerobic units respectively, a suspension type bamboo charcoal fiber filler 7-1, suspension sludge 7-2, a sludge reflux pump 7-3, a sludge reflux pipeline 7-4, residual sludge 7-5, a deep treatment chlorine dioxide disinfection tank 8 (a chlorine dioxide reaction unit 8-1 and a dechlorination unit 8-2) and sewage 9 reaching the standard; the collected waste gas M0, the plasma equipment M1, the activated carbon adsorption equipment M2 and the standard-reaching waste gas M3; chlorine dioxide medicine system K.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example 1
Referring to fig. 2, the wastewater treatment equipment of the treatment device is composed of a chlorine dioxide disinfection tank 2, a three-grid septic tank 3, an adjusting tank 4, a closed ultraviolet disinfector 6, a multi-stage biochemical tank 7 and a chlorine dioxide disinfection tank 8 which are connected in series in sequence, and further comprises waste gas treatment modules (M1 and M2); a cutting pump 5 is arranged in the regulating tank; the waste gas treatment modules (M1 and M2) are formed by connecting plasma equipment M1 and activated carbon adsorption equipment M2 in series; the multistage biochemical pond 7 is formed by connecting a four-stage A unit (A1, A2, A3 and A4) with a two-stage O unit (O1 and O2) and a precipitation unit C in series, part of sludge at a sludge outlet of the precipitation unit C flows back to 7-4 in a front section A1 of the four-stage A unit through a sludge return pump 7-3 and a sludge return pipe, the rest part is discharged to a water inlet section of the three-grid septic tank 3 as residual sludge 7-5, and a fluidized bamboo charcoal fiber filler 7-1 and suspended sludge 7-2 are arranged in the two-stage O unit (O1 and O2).
All the sewage treatment equipment (2, 3, 4, 6, 7 and 8) are of a closed structure, and the collected waste gas M0 is connected with waste gas treatment modules (M1 and M2).
The multistage a unit comprises four stages of anaerobic, anoxic tanks (a1, a2, A3, a4), and the two-stage O unit comprises 2 stages of aerobic tanks (O1, O2).
The bamboo charcoal fiber filler 7-1 is porous and cylindrical, the density of the bamboo charcoal fiber filler is close to that of water, the diameter of the bamboo charcoal fiber filler is 15-30 mm, and the height of the bamboo charcoal fiber filler is 6-10 mm.
The chlorine dioxide disinfection tank 2 is formed by connecting a chlorine dioxide reaction unit 2-1 and a dechlorination unit 2-2 in series, and also comprises a chlorine dioxide dosing system K.
A hospital wastewater comprehensive treatment method with zero sludge discharge comprises the following steps:
(1) chlorine dioxide disinfection tank 2: waste water and excrement 1 of a hospital are mixed with a chlorine dioxide medicament added by a chlorine dioxide medicament adding system K and then sequentially enter a chlorine dioxide reaction unit 2-1 and a dechlorination unit 2-2; in the chlorine dioxide reaction unit 2-1, oxidation degradation, sterilization and wastewater disinfection treatment of solid organic matters are carried out, so that the biodegradability of the organic matters is improved, and meanwhile, the sludge is reduced; the residual chlorine is consumed in the dechlorination unit 2-2, so that the microbial activity and the growth metabolism of the subsequent three-grid septic tank 3 are prevented from being inhibited; the treated wastewater enters a next-stage three-grid septic tank 3;
(2) three manure pits 3: through three-grid manure treatment, manure and sludge are decomposed and fermented step by step, so that the total amount of solid organic matters is reduced; the septic tank enters a next-stage regulating tank 4 after being treated;
(3) regulating reservoir 4+ cutting pump 5: sundries such as paper towels, cloth pieces, fibrous objects and the like in the wastewater collected by the adjusting tank are crushed and decomposed by a cutting pump 5 in the adjusting tank 4, so that the problem of blockage of subsequent equipment is prevented, and the wastewater is lifted to a closed ultraviolet sterilizer 6 for sterilization treatment;
(4) a closed ultraviolet sterilizer 6: the waste water lifted by the cutting pump 5 is sterilized by a closed ultraviolet sterilizer 6 and enters a multi-stage biochemical pool 7 after being treated;
(5) the multistage biochemical tank 7: the effluent of the closed ultraviolet sterilizer 6 is mixed with the returned sludge (7-3 and 7-4 lifted sludge), and then enters a multi-stage A unit (A1, A2, A3 and A4) to perform sludge self-respiration oxidation, hydrolysis reduction and sludge denitrification, so that the reduction of the sludge is realized, and the reduced sludge is converted into inorganic sludge; nitrifying and decarbonizing nitrogen in the incoming water through a multi-stage O unit (O1, O2), separating decarbonizing bacteria and nitrifying bacteria in different treatment O units through the multi-stage O unit (O1, O2) and a fluidized bamboo charcoal fiber filler 7-1, and domesticating specific enhanced microorganisms to realize the enhanced treatment of the multi-stage biochemical pool 7; the mud and water separation is realized through the precipitation unit C, and the effluent enters the next-stage chlorine dioxide disinfection tank 8; the precipitated sludge part serving as return sludge flows back to a multi-stage A unit A1, and the part serving as residual sludge 7-5 is discharged to a three-grid septic tank 3 for sludge reduction treatment; the zero discharge of the sludge of the system is realized through the self-respiration oxidation, hydrolysis, sludge denitrification and fermentation degradation of the three-grid septic tank 3 of the sludge of the multistage A unit (A1, A2, A3 and A4);
(6) chlorine dioxide disinfection tank 8: the waste gas enters a chlorine dioxide reaction unit 8-1 and a dechlorination unit 8-2 of the multi-stage biochemical pool for sterilization and dechlorination, and the treated waste gas reaches the standard and is discharged M3;
(7) the collected waste gas M0 collected by each treatment device is sterilized, sterilized and deodorized by a treatment process of serially connecting plasma equipment M1 and activated carbon adsorption equipment M2, so that the standard emission of the gas is realized.
By adopting the method for treating the waste water, the quality of the outlet water 9 is superior to the standard of the discharge standard of water pollutants of medical institutions (GB18466-2016), has the advantages of no generation of residual sludge, grid slag and the like, and does not generate the risk of infection of bacteria such as aerosol, sludge, grid slag, waste gas and the like.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims (6)

1. A hospital wastewater comprehensive treatment device with zero sludge discharge is characterized by being formed by sequentially connecting sewage treatment equipment in a chlorine dioxide disinfection tank, a three-grid septic tank, an adjusting tank, a closed ultraviolet disinfector, a multi-stage biochemical tank and a chlorine dioxide disinfection tank in series, and further comprising a waste gas treatment module; a cutting pump is arranged in the regulating tank; the waste gas treatment module is formed by connecting plasma equipment and activated carbon adsorption equipment in series; the multistage biochemical pool is formed by connecting a multistage A unit, a multistage O unit and a precipitation unit in series, part of sludge at a sludge outlet of the precipitation unit flows back to the front section of the multistage A unit through a sludge reflux pump and a sludge reflux pipe, the rest part of sludge is discharged to a water inlet section of the three-grid septic tank as residual sludge, and fluidized bamboo charcoal fiber filler and suspended sludge are arranged in the multistage O unit.
2. The hospital wastewater comprehensive treatment device with zero sludge discharge according to claim 1, characterized in that: each sewage treatment is of a closed structure, and the collected waste gas is connected with a waste gas treatment module.
3. The hospital wastewater comprehensive treatment device with zero sludge discharge according to claim 1, characterized in that: the multi-stage A unit at least comprises 3 stages of anaerobic tanks and anoxic tanks, and the multi-stage O unit at least comprises 2 stages of aerobic tanks.
4. The hospital wastewater comprehensive treatment device with zero sludge discharge according to claim 1, characterized in that: the bamboo charcoal fiber filler is porous and cylindrical, the density of the bamboo charcoal fiber filler is close to that of water, the diameter of the bamboo charcoal fiber filler is 15-30 mm, and the height of the bamboo charcoal fiber filler is 6-10 mm.
5. The hospital wastewater comprehensive treatment device with zero sludge discharge according to claim 1, characterized in that: the chlorine dioxide disinfection tank is composed of a chlorine dioxide reaction unit and a dechlorination unit which are connected in series, and also comprises a chlorine dioxide dosing system.
6. The comprehensive wastewater treatment method for the hospital with zero discharge of sludge by using the comprehensive wastewater treatment device according to claim 1 comprises the following steps:
(1) a chlorine dioxide disinfection tank: waste water and excrement in hospitals are mixed with chlorine dioxide medicament added by a chlorine dioxide medicament adding system and then sequentially enter a chlorine dioxide reaction unit and a dechlorination unit; in the chlorine dioxide reaction unit, oxidation degradation, sterilization and wastewater disinfection treatment of solid organic matters are carried out, so that the biodegradability of the organic matters is improved, and meanwhile, the sludge is reduced; the residual chlorine is consumed in the dechlorination unit, so that the microbial activity and the growth metabolism of a subsequent three-grid septic tank are prevented from being inhibited; the treated wastewater enters a next-stage three-grid septic tank;
(2) three septic tanks: through three-grid manure treatment, manure and sludge are decomposed and fermented step by step, so that the total amount of solid organic matters is reduced; the septic tank enters a next-stage regulating tank after being treated;
(3) adjusting tank + cutting pump: sundries such as paper towels, cloth pieces, fibrous objects and the like in the wastewater collected by the regulating tank are crushed and decomposed by a cutting pump in the regulating tank, so that the problem of blockage of subsequent equipment is prevented, and the wastewater is lifted to a closed ultraviolet sterilizer for sterilization treatment;
(4) closed ultraviolet sterilizer: sterilizing the wastewater lifted by the cutting pump by a closed ultraviolet sterilizer, and feeding the treated wastewater into a multi-stage biochemical pool;
(5) a multi-stage biochemical pool: after the effluent of the closed ultraviolet sterilizer is mixed with the returned sludge, the mixture enters a multistage A unit to perform sludge self-respiration oxidation, hydrolysis reduction and sludge denitrification, so that the reduction of the sludge is realized, and the reduced sludge is converted into inorganic sludge; nitrifying and decarbonizing nitrogen in the incoming water through a multi-stage O unit, separating decarbonizing bacteria and nitrifying bacteria in different treatment O units through the multi-stage O unit and a fluidized bamboo charcoal fiber filler, and domesticating specific enhanced microorganisms to realize the enhanced treatment of a multi-stage biochemical pool; the sludge-water separation is realized through the precipitation unit, and the effluent enters the next-stage chlorine dioxide disinfection tank; the precipitated sludge is used as return sludge to flow back to the multistage A unit, and the part of the return sludge is used as residual sludge to be discharged to a three-grid septic tank for sludge reduction treatment; the zero discharge of the sludge of the system is realized through the self-respiration oxidation and hydrolysis of the sludge, the denitrification of the sludge and the fermentation and degradation of the three-grid septic tank of the multi-stage A unit;
(6) a chlorine dioxide disinfection tank: the multi-stage biochemical tank enters a chlorine dioxide reaction unit and a dechlorination unit for sterilization and dechlorination treatment, and the treated materials are discharged after reaching the standard;
(7) the collected waste gas collected by each treatment device is sterilized, sterilized and deodorized by a treatment process of serially connecting the plasma device and the activated carbon adsorption device, so that the standard emission of the gas is realized.
CN202010100732.3A 2020-02-18 2020-02-18 Hospital wastewater comprehensive treatment device with zero sludge discharge and treatment method thereof Pending CN111253006A (en)

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CN111635085A (en) * 2020-07-09 2020-09-08 天津高能嘉源环保科技有限公司 Biochemical and oxidation parallel mutual backup type medical wastewater treatment system and method
CN111704273A (en) * 2020-06-29 2020-09-25 上海力脉环保设备有限公司 Treatment device and application method of amantadine-containing wastewater
CN111943364A (en) * 2020-08-03 2020-11-17 昆明金泽实业有限公司 Method for eliminating influence of disinfectant on biochemical system by using excess sludge
CN113045050A (en) * 2021-04-06 2021-06-29 湖北厚水科技发展有限公司 Non-blocking circulation pretreatment device and method for medical sewage based on gas-liquid two-phase cooperative control

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