CN109231711B - Black and odorous river sewage treatment system and method - Google Patents
Black and odorous river sewage treatment system and method Download PDFInfo
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- CN109231711B CN109231711B CN201811313837.6A CN201811313837A CN109231711B CN 109231711 B CN109231711 B CN 109231711B CN 201811313837 A CN201811313837 A CN 201811313837A CN 109231711 B CN109231711 B CN 109231711B
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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Abstract
The invention aims to provide a black and odorous river sewage treatment system and method, wherein sewage in a black and odorous river is extracted into the system through a pipeline, firstly, impurities with larger volume in the sewage in the black and odorous river are removed through a pretreatment device, then a carbon fluidized bed is introduced, fluid in the carbon fluidized bed is sent into a solid-liquid separation device for solid-liquid separation, solid after the solid-liquid separation is subjected to carbon regeneration, liquid is sent into a biological adsorption tank for adsorption, mixed liquid in the biological adsorption tank is subjected to solid-liquid separation, then sludge is subjected to anaerobic fermentation, the sludge returns to the biological adsorption tank for continuous adsorption after the fermentation is finished, supernatant is introduced into a biochemical reaction tank and/or a catalytic oxidation tank, and the treated supernatant is discharged into the black and odorous river after the treatment is finished.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a black and odorous river sewage treatment system and a black and odorous sewage treatment method.
Background
The 'action plan for preventing and treating water pollution' issued by the state department puts forward a definite requirement on the treatment of black and odorous water: by 2020, black and odorous water bodies in the built-up areas of the cities on the land level and above in China are controlled within 10 percent; by 2030, black and odorous water in the built-up areas of the city is totally eliminated.
The main reason why the water body generates black and odor is that the exogenous organic matters and ammonia nitrogen consume oxygen in the water, when the dissolved oxygen is reduced to an excessively low level, a large amount of organic matters are further decomposed under the action of anaerobic bacteria to generate hydrogen sulfide, amine, ammonia and other volatile micromolecule compounds with peculiar smell, so that odor is emitted; meanwhile, under the anaerobic condition, methane, nitrogen, hydrogen sulfide and other gases which are difficult to dissolve in water and are generated in the sediment carry sludge into a water phase in the rising process, so that the water body is blackened.
The conventional treatment methods are manual aeration, sediment dredging, water diversion and the like, but the methods have the defects of long purification period, poor treatment effect, basically temporary solution and permanent solution, higher treatment cost and difficult long-term continuous application.
CN105923926A utilizes the combination of carbon separation device, MBR technology's biological pond and MBR technology's membrane cisterna to handle black smelly sewage and has obtained better treatment effect, but because its treatment cost is high, the inefficiency, the high problem of equipment cost is difficult to use on a large scale, and the use of this method is difficult to lasting effective treatment black smelly sewage in the river course.
CN107673561B is to set up the water conservancy diversion wall body in the river course normal position to set up multiple treatment ponds and carry out comprehensive treatment, though this method can synthesize the advantage of multiple treatment process, set up the water conservancy diversion wall in the river course and influence river course flood discharge ability, engineering cost is high simultaneously, is difficult to flexibly move the processing.
Disclosure of Invention
The invention overcomes the defect of treating black and odorous river sewage in the prior art, and provides a black and odorous river sewage treatment system and a method.
The utility model provides a black and odorous river course sewage treatment system, is including the preprocessing device, carbon fluidized bed, solid-liquid separation equipment, biological adsorption tank, good oxygen pond, catalytic oxidation pond and the play pond that set gradually, solid-liquid separation equipment connects carbon regeneration equipment, and carbon regeneration equipment connects the carbon fluidized bed, biological adsorption tank still is connected with the fermentation vat, and the mud is carried to the fermentation vat fermentation in the biological adsorption tank after adsorbing, and after the fermentation, partial mud backward flow continues adsorption treatment to biological adsorption tank, and the supernatant in biological adsorption tank is carried to good oxygen pond and is handled.
Furthermore, the system is also provided with a carbonization device, and part of the sludge fermented by the fermentation tank is conveyed to the carbonization device for carbonization;
further, the carbonization equipment is connected with a carbon fluidized bed;
further, the sludge in the biological adsorption tank is generated by selecting indigenous microorganisms in the black and odorous river sewage as strains and carrying out enrichment culture;
furthermore, the aerobic tank is connected with the water outlet tank, and partial sludge in the aerobic tank is conveyed to the water outlet tank and discharged into a black and odorous river channel along with the water outlet of the water outlet tank;
further, the fermentation tank is connected with a water outlet tank, and part of sludge in the fermentation tank is conveyed to the water outlet tank and discharged to a black and odorous river channel along with the outlet water of the water outlet tank;
further, a surfactant is added into the biological adsorption tank, and the surfactant is a biosurfactant, such as rhamnolipid;
further, cast iron particles are added into the catalytic oxidation tank, and hydrogen peroxide is added, wherein the cast iron particles comprise iron, carbon, copper and cerium, and the weight ratio of the cast iron particles to the hydrogen peroxide is 65-80:5-25:5: 0.5;
further, a ferrous iron source is also added into the catalytic oxidation pool;
further, feeding the sludge generated in the catalytic oxidation tank into carbonization equipment, and carbonizing the sludge and the sludge generated in the fermentation tank;
furthermore, based on the water quality condition of the wastewater, an aerobic pool, a carbonization device and a carbon regeneration device can be omitted;
further, the system can be arranged on a mobile device to perform motorized treatment on the black and odorous river channel.
A black and odorous river sewage treatment method comprises the following steps:
1) pumping black and odorous river sewage into a pretreatment device, filtering large-particle-size slag in a water body by using a coarse grid, and further removing smaller impurities by using a fine grid;
2) after being filtered by a pretreatment device, the sewage enters a carbon fluidized bed, the sewage is fully and uniformly mixed with carbon particles in the sewage to generate adsorption, after 15-60min, the mixture in the carbon fluidized bed is sent to solid-liquid separation equipment, and then carbon in carbon regeneration equipment and/or carbonization equipment is sent to the carbon fluidized bed for continuous adsorption;
3) feeding carbon separated by the solid-liquid separation equipment into carbon regeneration equipment, feeding supernatant into a biological adsorption tank, filling sludge generated by enrichment culture of indigenous microorganisms in black and odorous river sewage into the biological adsorption tank, and staying for 20-80 min;
4) sending supernatant in the biological adsorption tank into an aerobic tank, sending residual sludge into a fermentation tank for fermentation treatment, and after fermentation is finished, returning partial sludge to the biological adsorption tank for continuous adsorption treatment;
5) and part of sludge in the aerobic tank flows back to the biological adsorption tank, the effluent of the aerobic tank is sent into the catalytic oxidation tank, and the effluent of the catalytic oxidation tank enters the effluent tank and is discharged.
Further, the fermentation tank is connected with a water outlet tank, and part of sludge in the fermentation tank is conveyed to the water outlet tank and discharged to a black and odorous river channel along with the outlet water of the water outlet tank;
further, a surfactant is added into the biological adsorption tank, and the surfactant is a biosurfactant, such as rhamnolipid;
further, cast iron particles are added into the catalytic oxidation tank, and hydrogen peroxide is added, wherein the cast iron particles comprise iron, carbon, copper and cerium, and the weight ratio of the cast iron particles to the hydrogen peroxide is 65-80:5-25:5: 0.5;
further, a ferrous iron source is also added into the catalytic oxidation pool;
further, feeding the sludge generated in the catalytic oxidation tank into carbonization equipment, and carbonizing the sludge and the sludge generated in the fermentation tank;
the scheme shows that the system and the method for treating the black and odorous river sewage are simple in structure and convenient to operate, can quickly, simply and conveniently reduce the concentration of pollutants in the black and odorous water body, have long-acting and lasting treatment effect on the black and odorous river sewage, and have the following advantages compared with the traditional treatment process:
1. performing two-stage adsorption on the black and odorous water body by using a carbon fluidized bed and a biological adsorption tank, and adsorbing most pollutants;
2. carrying out aerobic and catalytic treatment on the sewage after adsorption treatment to ensure that the water quality reaches the discharge standard and then is discharged;
3. indigenous microorganisms in the sewage of the black and odorous riverway are used as bacteria sources, so that the microbial ecological risk to a treatment area is avoided;
4. a small amount of sludge is added into the discharged water, so that the self-purification capacity of the water body is improved, and the method is an effective means for purifying the sewage in the black and odorous riverway.
Drawings
FIG. 1 is a schematic view of a black and odorous river sewage treatment system according to the present invention;
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," when used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1
A black and odorous river sewage treatment method comprises the following steps:
1) pumping black and odorous river sewage into a pretreatment device, filtering large-particle-size slag in a water body by using a coarse grid, and further removing smaller impurities by using a fine grid;
2) after being filtered by a pretreatment device, the sewage enters a carbon fluidized bed, the sewage is fully and uniformly mixed with carbon particles in the sewage to generate adsorption, after 45min, the mixture in the carbon fluidized bed is sent to solid-liquid separation equipment, and then carbon in carbon regeneration equipment and/or carbonization equipment is sent to the carbon fluidized bed to be continuously adsorbed;
3) feeding carbon separated by the solid-liquid separation equipment into carbon regeneration equipment, feeding supernatant into a biological adsorption tank, filling sludge generated by enrichment culture of indigenous microorganisms in black and odorous river sewage into the biological adsorption tank, and staying for 60 min;
4) sending supernatant in the biological adsorption tank into an aerobic tank, sending residual sludge into a fermentation tank for fermentation treatment, and after fermentation is finished, returning partial sludge to the biological adsorption tank for continuous adsorption treatment;
5) part of sludge in the aerobic tank flows back to the biological adsorption tank, the effluent of the aerobic tank is sent into the catalytic oxidation tank, and the effluent of the catalytic oxidation tank enters the effluent tank and is discharged;
adding a surfactant into the biological adsorption tank, wherein the surfactant is a biosurfactant such as rhamnolipid, adding cast iron particles into the catalytic oxidation tank, adding hydrogen peroxide, wherein the cast iron particles comprise iron, carbon, copper and cerium, and the weight ratio of the cast iron particles to the hydrogen peroxide is 70:15:5:0.5, and feeding sludge generated in the catalytic oxidation tank into carbonization equipment to be carbonized with sludge generated in the fermentation tank.
Example 2
The water quality condition of black and odorous sewage in a certain river: COD is 258 mg/L; 4.18mg/L of total phosphorus; ammonia nitrogen 11.35 mg/L; dissolved oxygen is 0.27 mg/L; the transparency is 10 cm; the SS (suspended substance) was 214.4 mg/L.
Fluidized bed treatment: after adsorption, the COD is 158 mg/L; 3.58mg/L of total phosphorus; 6.35mg/L of ammonia nitrogen; the transparency is 2 cm; SS (suspended substance) is 65 mg/L;
a biological adsorption tank: after adsorption, the COD is 98 mg/L; 2.18mg/L of total phosphorus; 4.13mg/L of ammonia nitrogen; the transparency is 2 cm; SS (suspended substance) is 76 mg/L;
an aerobic tank: COD is 78mg/L after aerobic treatment; 1.38mg/L of total phosphorus; ammonia nitrogen is 1.65 mg/L;
a catalytic oxidation tank: COD after catalytic oxidation is 34 mg/L; total phosphorus 0.67 mg/L; 0.73mg/L ammonia nitrogen.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a black smelly river course sewage treatment system which characterized in that: the system comprises a pretreatment device, a carbon fluidized bed, solid-liquid separation equipment, a biological adsorption tank, an aerobic tank, a catalytic oxidation tank and a water outlet tank which are sequentially arranged, wherein the solid-liquid separation equipment is connected with the carbon regeneration equipment which is connected with the carbon fluidized bed, the biological adsorption tank is also connected with a fermentation tank, sludge after adsorption in the biological adsorption tank is conveyed to the fermentation tank for fermentation, after the fermentation is finished, partial sludge flows back to the biological adsorption tank for continuous adsorption treatment, supernatant in the biological adsorption tank is conveyed to the aerobic tank for treatment, carbonization equipment is further arranged in the system, sludge after fermentation in the fermentation tank is partially conveyed to the carbonization equipment for carbonization, the carbonization equipment is connected with the carbon fluidized bed, the system can be arranged on mobile equipment for carrying out mechanical treatment on black and odorous river channels, surfactant is added in the biological adsorption tank, and is biological surfactant, the biosurfactant is rhamnolipid, cast iron particles are added into the catalytic oxidation tank, hydrogen peroxide is added, and the cast iron particles comprise iron, carbon, copper and cerium in a weight ratio of 65-80:5-25:5: 0.5.
2. The system of claim 1, wherein the sludge in the biological adsorption tank is produced by selecting indigenous microorganisms in the black and odorous river sewage as strains for enrichment culture.
3. The system of claim 1, wherein the aerobic tank is connected with the effluent tank, and part of sludge in the aerobic tank is conveyed to the effluent tank and discharged to the black and odorous river channel along with effluent of the effluent tank.
4. The system of claim 1, wherein the fermentation tank is connected with a water outlet tank, and part of sludge in the fermentation tank is conveyed to the water outlet tank and is discharged into the black and odorous river channel along with the water outlet of the water outlet tank.
5. The sewage treatment method of the black and odorous river sewage treatment system of claim 1,
the method comprises the following steps:
1) pumping black and odorous river sewage into a pretreatment device, filtering large-particle-size slag in a water body by using a coarse grid, and further removing smaller impurities by using a fine grid;
2) after being filtered by a pretreatment device, the sewage enters a carbon fluidized bed, the sewage is fully and uniformly mixed with carbon particles in the sewage to generate adsorption, after 15-60min, the mixture in the carbon fluidized bed is sent to solid-liquid separation equipment, and then carbon in carbon regeneration equipment and/or carbonization equipment is sent to the carbon fluidized bed for continuous adsorption;
3) feeding carbon separated by the solid-liquid separation equipment into carbon regeneration equipment, feeding supernatant into a biological adsorption tank, filling sludge generated by enrichment culture of indigenous microorganisms in black and odorous river sewage into the biological adsorption tank, and staying for 20-80 min;
4) sending supernatant in the biological adsorption tank into an aerobic tank, sending residual sludge into a fermentation tank for fermentation treatment, and after fermentation is finished, returning partial sludge to the biological adsorption tank for continuous adsorption treatment;
5) and part of sludge in the aerobic tank flows back to the biological adsorption tank, the effluent of the aerobic tank is sent into the catalytic oxidation tank, and the effluent of the catalytic oxidation tank enters the effluent tank and is discharged.
6. The method of claim 5, wherein the fermentation tank is connected with a water outlet tank, and partial sludge in the fermentation tank is conveyed to the water outlet tank and is discharged into the black and odorous river channel along with the water outlet of the water outlet tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811313837.6A CN109231711B (en) | 2018-11-06 | 2018-11-06 | Black and odorous river sewage treatment system and method |
| PCT/CN2019/078642 WO2020093643A1 (en) | 2018-11-06 | 2019-03-19 | System and method for treating black and odorous river channel sewage |
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| JP4474930B2 (en) * | 2004-02-02 | 2010-06-09 | 栗田工業株式会社 | Biological treatment method for organic wastewater |
| CN102107988B (en) * | 2010-12-22 | 2013-06-12 | 上海康盛环保能源科技有限公司 | Phenol-amine wastewater treatment and recycling method and device |
| CN102286379B (en) * | 2011-07-28 | 2014-05-28 | 中山大学 | Method for extracting pannonibacter phragmitetus from sludge |
| CN102626639A (en) * | 2012-03-21 | 2012-08-08 | 南京工业大学 | Catalyst for microwave degradation of printing and dyeing wastewater, and preparation method thereof |
| CN103911332B (en) * | 2014-04-04 | 2016-01-20 | 范敏 | A kind of method of cultivation for black and odorous water denitrogenation dephosphorizing composite bacteria |
| CN204417293U (en) * | 2015-01-26 | 2015-06-24 | 冯祥军 | A kind of denitrification dephosphorization apparatus |
| CA2989452C (en) * | 2015-06-23 | 2020-06-02 | Trojan Technologies | Process and device for the treatment of a fluid containing a contaminant |
| CN105819620A (en) * | 2016-03-30 | 2016-08-03 | 广州资源环保科技股份有限公司 | Wastewater treatment technology and device beneficial to removing black and odorous water |
| CN106277637B (en) * | 2016-09-14 | 2023-05-30 | 江苏润聚环保科技有限公司 | Method and system for treating black and odorous surface water |
| CN108069499A (en) * | 2016-11-11 | 2018-05-25 | 中国石油化工股份有限公司抚顺石油化工研究院 | Using the method for ozone catalytic wet oxidation processing waste water |
| TWI738985B (en) * | 2017-03-15 | 2021-09-11 | 日商日本觸媒股份有限公司 | Apparatus and method for wastewater treatment |
| CN107673561B (en) * | 2017-11-07 | 2018-09-11 | 中交生态环保投资有限公司 | A kind of black and odorous water in-situ treatment system and processing method |
| CN108275832B (en) * | 2018-01-23 | 2019-06-11 | 昆明水啸科技有限公司 | The combined fluidized bed method for repairing river black and odorous water and eutrophic lake water |
| CN108441444B (en) * | 2018-03-22 | 2020-09-25 | 中电建生态环境集团有限公司 | Compound microbial agent suitable for black and odorous water treatment |
| CN109231711B (en) * | 2018-11-06 | 2021-05-18 | 江苏澳洋生态园林股份有限公司 | Black and odorous river sewage treatment system and method |
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