CN211255496U - High-standard advanced treatment system for refractory organic matters in comprehensive wastewater of industrial park - Google Patents
High-standard advanced treatment system for refractory organic matters in comprehensive wastewater of industrial park Download PDFInfo
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- CN211255496U CN211255496U CN201920933260.2U CN201920933260U CN211255496U CN 211255496 U CN211255496 U CN 211255496U CN 201920933260 U CN201920933260 U CN 201920933260U CN 211255496 U CN211255496 U CN 211255496U
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Abstract
The high-standard advanced treatment system for the refractory organic matters in the comprehensive wastewater of the industrial park comprises an acid adding regulation area, a ferrous iron adding area, a main reaction area, an alkali adding regulation area, a coagulation aiding area and a settling area, wherein the main reaction area is divided into a plurality of reaction grids and adopts a plug flow mode. The adjacent areas are separated by partition walls, the partition walls are provided with communicating ports, and the adjacent areas are communicated through the communicating ports. The utility model adopts Fe2+/H2O2A high-efficiency adsorption catalytic oxidation treatment system coupled with powdered carbonOrganic matter Content (COD) of water to be treatedcr) And the organic matter Content (COD) of the treated effluentcr) The method has the advantages of flexibly regulating and controlling the reaction pH value, the powder carbon adding point and the adding amount, fully exerting the catalytic adsorption performance of the powder carbon, improving the treatment efficiency, reducing the adding amount of the medicament and ensuring that the high standard of the organic matters reaches the standard stably.
Description
Technical Field
The utility model belongs to the technical field of water treatment, a difficult degradation organic matter high standard degree of depth processing system and operation method in industrial park comprehensive waste water is related to.
Background
With the development of urban construction and economic construction in China, industrial projects are gradually concentrated to a park, and currently, more than 9000 industrial parks or gathering areas built in China and under construction are achieved. The comprehensive wastewater in the industrial park has large water quality and water quantity fluctuation, complex components and high contents of difficult-to-degrade and toxic and harmful substances, so that the treatment of the concentrated sewage treatment plant in the industrial park or the gathering area reaches the standard with great difficulty, especially organic pollutants, residual organic matters after being treated by a biological system have the characteristics of low concentration, difficult degradation and the like, and the deep removal difficulty is great. At present, the Jingjin area, the Taihu lake basin, the nest lake basin and other areas establish local discharge standards which are stricter than the current discharge standard of pollutants for municipal wastewater treatment plants (GB18918-2002), in particular to organic matters (COD)cr) The indexes are as specified in discharge Standard of pollutants for municipal wastewater treatment plant (DB12/599-3COD of effluent water at time of dcrThe concentration is lower than 30 mg/L. The discharge limit of main water pollutants of town sewage treatment plants and key industrial industries in Taihu lake region (DB32/1072-2017) stipulates various industrial parks and COD of effluent water of centralized sewage treatment plants in the first-level and second-level protection areas of Taihu lake basin and industrial concentration areascrLess than 40 mg/L. Therefore, under the requirement of current high discharge standard, the stable standard reaching of the centralized sewage treatment plant in the industrial park or the gathering area faces more difficulty and challenge.
The advanced treatment of the organic matters difficult to degrade mainly adopts oxidation technologies such as activated carbon adsorption, Fenton and ozone oxidation, wherein the ozone oxidation technology has selectivity on organic matter removal and can remove partial organic matters, but the removal rate is limited, the ozone adding amount is large, the operation cost is high, and the treatment effect is unstable. The Fenton oxidation technology adopts hydroxyl free radicals to have no selectivity on organic matter oxidation, has good treatment effect, but has the problems of large medicament adding amount, high operation cost, large sludge yield and the like when meeting high standard treatment requirements. Taking a centralized sewage treatment plant in a certain industrial gathering area as an example, the deep treatment of organic matters is carried out by Fenton oxidation, the adding amount of hydrogen peroxide (27%) reaches 400-600mg/L, and the adding cost of the medicament reaches 2.0-2.5 yuan/ton of water.
Therefore, under the requirement of high discharge standard, it is necessary to provide an efficient and economical advanced treatment method aiming at the stable standard reaching of the refractory organic matters in the comprehensive wastewater of the industrial park or the gathering area.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of existence among the above-mentioned prior art, and provide a high standard degree of depth processing system of difficult degradation organic matter in the comprehensive waste water of industrial park, use this processing system under the requirement of high emission standard, can get rid of the remaining difficult degradation organic matter of industrial park comprehensive waste water after biological system handles effectively, and get rid of the effect and stabilize, energy consumption thing consumes lowly.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a high standard advanced treatment system of difficult degradation organic matter in industrial park comprehensive waste water which characterized in that: the device comprises an acid adding adjusting area (2), a ferrous iron adding area (3), a main reaction area (4), an alkali adding adjusting area (5), a coagulation aiding area (6) and a precipitation area (7), wherein adjacent areas are separated by partition walls, communication ports are formed in the partition walls, and the adjacent areas are communicated through the communication ports, wherein the acid adding adjusting area (2) is communicated with the ferrous iron adding area (3), the ferrous iron adding area (3) is communicated with the main reaction area (4), the main reaction area (4) is communicated with the alkali adding adjusting area (5), the alkali adding adjusting area (5) is communicated with the coagulation aiding area (6), and the coagulation aiding area (6) is communicated with the precipitation area (7);
the main reaction zone (4) is divided into a plurality of reaction grids in a plug flow mode, adjacent reaction grids are separated by partition walls, communication ports are formed in the partition walls, adjacent areas are communicated through the communication ports, and1 reaction cell is internally provided with H2O2A feeding point (12), and finally a first alkali liquor feeding point (13), a first powdered carbon feeding point (14) and a first pH on-line detector (18) are arranged in the reaction grid;
the acid adding adjusting area (2) is connected with a water inlet pipeline, and an acid liquid adding point (9) and a second pH online detector (17) are arranged in the acid adding adjusting area;
a ferrous iron feeding point (10) and a second powdered carbon feeding point (11) are arranged in the ferrous iron feeding area (3);
a second alkali solution feeding point (15) and a third pH on-line detector (19) are arranged in the alkali adding adjusting area (5);
a coagulant aid feeding point (16) is arranged in the coagulant aid area (6);
the settling zone (7) is connected with a water outlet pipeline and communicated with the acid adding regulation zone (2) through a pipeline, a sludge reflux pump (20) is installed on the pipeline, an inclined plate is arranged in the settling zone (7) zone, and iron-containing sludge and powdered carbon sludge generated in the settling zone (7) are refluxed to the acid adding regulation zone (2) through the sludge reflux pump (20).
Stirrers are arranged in the acid adding adjusting area (2), the ferrous iron adding area (3), the main reaction area (4), the alkali adding adjusting area (5) and the coagulation aiding area (6).
The main reaction zone (4) is divided into four reaction grids (4-1, 4-2, 4-3 and 4-4), stirrers are arranged in the four reaction grids, and H is arranged in the first reaction grid (4-1)2O2A first alkali liquor adding point (13), a first powdered carbon adding point (14) and a first pH on-line detector (18) are arranged in the fourth reaction grid (4-4).
The utility model has the advantages of it is following and positive effect:
1. the utility model adopts Fe2+/H2O2The high-efficiency adsorption catalytic oxidation system coupled with the powdered carbon improves the oxidation efficiency of hydroxyl radicals by utilizing the adsorption, aggregation and catalysis of the powdered carbon on ferrous ions and pollutants, and further improves the removal effect of the system on refractory organic matters.
2. The utility model discloses according to coming water organic matter Content (COD)cr) And the organic matter Content (COD) of the effluentcr) The acid addition is required to be flexibly adjustedThe pH regulating value of the nodal region, the powdered carbon adding point and the adding amount thereof can exert the adsorption and catalysis effects of the powdered carbon to the maximum extent.
3. The utility model discloses owing to improved the oxidation efficiency of system, consequently can reduce the medicament dosage.
4. The utility model provides a difficult degradation organic matter advanced treatment method and system simple structure, flexible operation, maneuverability are strong, are more applicable to the high standard advanced treatment of difficult degradation organic matter under the complicated comprehensive quality of water condition in industrial park.
Drawings
Fig. 1 is a schematic plan view of the present invention.
In the figure: 1-water to be treated; 2-an acid addition regulation zone; 3-a ferrous adding area; 4-main reaction zone (containing 4 reaction compartments: 4-1, 4-2, 4-3 and 4-4); 5-a base addition regulation zone; 6-a coagulation-aiding zone; 7-a precipitation zone; 8-treating the effluent; 9-acid liquor adding point; 10-ferrous feeding point; 11-second powdered carbon feeding point; 12-H2O2Adding points; 13-adding a first alkali liquor; 14-first powdered carbon feeding point; 15-second alkali liquor feeding point; 16-coagulant aid adding point; 17-a second pH on-line detector; 18-a first pH on-line detector; 19-a third pH on-line detector; 20-sludge reflux pump.
Detailed Description
As shown in fig. 1: a high-standard advanced treatment system for refractory organic matters in comprehensive wastewater of an industrial park comprises an acid adding regulation area (2), a ferrous iron adding area (3), a main reaction area (4), an alkali adding regulation area (5), a coagulation aiding area (6) and a settling area (7), wherein the main reaction area (4) is divided into 4 reaction grids (4-1, 4-2, 4-3 and 4-4) and adopts a plug flow mode. The adjacent areas are separated by partition walls, the partition walls are provided with communicating ports, and the adjacent areas are communicated through the communicating ports. Wherein the acid adding adjusting area (2) is communicated with the ferrous iron adding area (3), the ferrous iron adding area (3) is communicated with the main reaction area (4), the main reaction area (4) is communicated with the alkali adding adjusting area (5), the alkali adding adjusting area (5) is communicated with the coagulation aiding area (6), and the coagulation aiding area (6) is communicated with the settling area (7).
The acid adding adjusting area (2) is connected with a water inlet pipeline, a stirrer is arranged in the acid adding adjusting area, and an acid liquid adding point (9) and a second pH online detector (17) are arranged in the acid adding adjusting area.
The ferrous feeding area (3) is provided with a stirrer, a ferrous feeding point (10) and a second powdered carbon feeding point (11).
The four reaction grids of the main reaction zone (4) are all provided with stirrers, wherein the first reaction grid (4-1) is provided with H2O2A first alkali liquor adding point (13), a first powdered carbon adding point (14) and a first pH on-line detector (18) are arranged on the fourth reaction grid (4-4).
The alkali adding adjusting area (5) is provided with a stirrer, a second alkali liquor adding point (15) and a third pH on-line detector (19), alkali liquor is added through the second alkali liquor adding point (15), and the pH value in the adjusting area is adjusted to 6.5-7.5;
the coagulation aiding area (6) is provided with a stirrer and a coagulant aid feeding point (16);
the settling zone (7) is connected with a water outlet pipeline and communicated with the acid adding regulation zone (2) through a pipeline, a sludge reflux pump (20) is installed on the pipeline, an inclined plate is arranged in the settling zone (7) zone, and iron-containing sludge and powdered carbon sludge generated in the settling zone (7) are refluxed to the acid adding regulation zone (2) through the sludge reflux pump (20).
The utility model discloses according to coming water organic matter Content (COD)cr) And the organic matter Content (COD) of the effluentcr) And flexibly adjusting the pH regulation value of the acid-adding regulation area, the carbon powder adding point and the adding amount of the carbon powder.
1. When the pH value of the acid-adding adjusting area (2) is 3.0-5.5, when the organic matter Content (COD) of the water to be treated iscr) When the concentration is higher than 40mg/L, acid liquor is added through an acid liquor adding point (9), and the pH regulating value in the acid adding regulating area (2) is regulated to be 3.0-4.5. When the organic matter Content (COD) of the water to be treatedcr) When the concentration is lower than 40mg/L, acid liquor is added at the acid liquor adding point (9), and the pH regulating value in the acid adding regulating area (2) is regulated to 4.5-5.5.
2. Flexibly adjusting the adding position of the powdered carbon according to the pH value regulated and controlled by the acid adding adjusting area (2). When the pH regulating value of the acid adding regulating area (2) is 3.0-4.5, alkali liquor is added through a first alkali liquor adding point (13) of the last reaction lattice of the main reaction area (4), the pH regulating value of the last reaction lattice of the main reaction area (4) is regulated to be 4.5-5.5, and powdered carbon is added through a first powdered carbon adding point (14). When the pH value of the acid adding adjusting area (2) is 4.5-5.5, adding the powdered carbon through a second powdered carbon adding point (11) of the ferrous iron adding area (3).
The operation steps of the high-standard advanced treatment system for the refractory organic matters in the comprehensive wastewater of the industrial park are as follows:
embodiment 1:
a. water (1) to be treated enters an acid adding adjusting area (2) through a water inlet pipeline, sludge in a settling area (7) flows back to the acid adding adjusting area through a sludge reflux pump (20), a stirrer is started, acid liquor is added through an acid liquor adding point (9) when the organic matter content of the incoming water is higher than 40-60mg/L, a pH online detector detects the pH value in real time, and the pH value in the adjusting area is 3.0-4.5;
b. the effluent of the acidification adjusting area enters a ferrous adding area (3) through a communication port on the partition wall, a stirrer is started, and a ferrous solution is added through a ferrous adding point (10);
c. the effluent of the ferrous adding area enters the No. 1 lattice (4-1) of the main reaction area (4) through a communication port on the partition wall, the stirrer is started, and the effluent passes through the H2O2H is added at an adding point (12)2O2Water flow sequentially pushes and flows into a 4 th lattice (4-4) through a communication port on the partition wall, alkali liquor is added through a first alkali liquor adding point (13), a first pH online detector (18) detects the pH value in real time, the pH value of the 4 th lattice (4-4) is regulated to 4.5-5.5, and powdered carbon is added through a first powdered carbon adding point (14);
d. the effluent of the main reaction zone enters an alkali adding adjusting zone (5) through a communication port on a partition wall, a stirrer is started, alkali liquor is added through a second alkali liquor adding point (15), a third pH online detector (19) detects the pH value in real time, and the pH value in the adjusting zone is 6.5-7.5;
e. the effluent of the alkali adding adjusting area enters a coagulation aiding area (6) through a communication port on the partition wall, a stirrer is started, and PAM is added through a coagulant aid adding point (16);
f. the effluent of the coagulant aid area enters a settling area (7) for mud-water separation;
g. the treated effluent (8) is discharged through an effluent conduit.
Embodiment 2:
a. water (1) to be treated enters an acid adding adjusting area (2) through a water inlet pipeline, sludge in a settling area (7) flows back to the acid adding adjusting area through a sludge reflux pump (20), a stirrer is started, acid liquor is added through an acid liquor adding point (9) when the content of organic matters in the incoming water is lower than 30-40mg/L, a second pH online detector (17) detects the pH value in real time, and the pH value in the adjusting area is 4.5-5.5;
b. the effluent of the acidification adjusting area enters a ferrous adding area (3) through a communication port on the partition wall, a stirrer is started, a ferrous solution is added through a ferrous adding point (10), and powdered carbon is added through a second powdered carbon adding point (11);
c. the effluent of the ferrous adding area enters the No. 1 lattice (4-1) of the main reaction area (4) through a communication port on the partition wall, the stirrer is started, and the effluent passes through the H2O2H is added at an adding point (12)2O2The water flow is pushed to flow through the communication port on the partition wall and sequentially passes through the 2 nd lattice (4-2) to the 4 th lattice (4-4);
d. the effluent of the main reaction zone enters an alkali adding adjusting zone (5) through a communication port on a partition wall, a stirrer is started, alkali liquor is added through a second alkali liquor adding point (15), a third pH online detector (19) detects the pH value in real time, and the pH value in the adjusting zone is 6.5-7.5;
e. the effluent of the alkali adding adjusting area enters a coagulation aiding area (6) through a communication port on the partition wall, a stirrer is started, and PAM is added through a coagulant aid adding point (16);
f. the effluent of the coagulant aid area enters a settling area (7) for mud-water separation;
g. the treated effluent (8) is discharged through an effluent conduit.
The utility model adopts Fe2+/H2O2The high-efficiency adsorption catalytic oxidation treatment system coupled with the powdered carbon flexibly regulates and controls the reaction pH value, the powdered carbon feeding point and the feeding amount according to the requirements of the organic matter content (CODcr) of water to be treated and the organic matter content (CODcr) of treated water, fully exerts the catalytic adsorption performance of the powdered carbon, improves the treatment efficiency and reduces the medicament feeding amount.
Examples of the experiments
A sewage treatment plant in a certain industrial park adopts hydrolysis acidification and MBR process, effluent water executes the first-class B standard of pollutant discharge Standard of urban Sewage treatment plant (GB18918-2002), and effluent water organic matter (COD)cr) The concentration is 35-60 mg/L. MiningUse the utility model discloses advanced treatment system carries out organic matter advanced treatment to with conventional Fe2+/H2O2The oxidation treatment systems were compared and the operating parameters and effects are shown in the table.
TABLE Fe2+/H2O2Coupling of powder carbon system with conventional Fe2+/H2O2Systematic comparison
The above embodiments are not limiting embodiments of the present invention, and modifications or equivalent variations made by those skilled in the art based on the essence of the present invention are within the technical scope of the present invention.
Claims (3)
1. The utility model provides a high standard advanced treatment system of difficult degradation organic matter in industrial park comprehensive waste water which characterized in that: the device comprises an acid adding adjusting area (2), a ferrous iron adding area (3), a main reaction area (4), an alkali adding adjusting area (5), a coagulation aiding area (6) and a precipitation area (7), wherein adjacent areas are separated by partition walls, communication ports are formed in the partition walls, and the adjacent areas are communicated through the communication ports, wherein the acid adding adjusting area (2) is communicated with the ferrous iron adding area (3), the ferrous iron adding area (3) is communicated with the main reaction area (4), the main reaction area (4) is communicated with the alkali adding adjusting area (5), the alkali adding adjusting area (5) is communicated with the coagulation aiding area (6), and the coagulation aiding area (6) is communicated with the precipitation area (7);
the main reaction zone (4) is divided into a plurality of reaction grids in a plug flow mode, adjacent reaction grids are separated by partition walls, communication ports are formed in the partition walls, adjacent areas are communicated through the communication ports, and H is arranged in the No. 1 reaction grid2O2A feeding point (12), and finally a first alkali liquor feeding point (13), a first powdered carbon feeding point (14) and a first pH on-line detector (18) are arranged in the reaction grid;
the acid adding adjusting area (2) is connected with a water inlet pipeline, and an acid liquid adding point (9) and a second pH online detector (17) are arranged in the acid adding adjusting area;
a ferrous iron feeding point (10) and a second powdered carbon feeding point (11) are arranged in the ferrous iron feeding area (3);
a second alkali solution feeding point (15) and a third pH on-line detector (19) are arranged in the alkali adding adjusting area (5);
a coagulant aid feeding point (16) is arranged in the coagulant aid area (6);
the settling zone (7) is connected with a water outlet pipeline and communicated with the acid adding regulation zone (2) through a pipeline, a sludge reflux pump (20) is installed on the pipeline, an inclined plate is arranged in the settling zone (7) zone, and iron-containing sludge and powdered carbon sludge generated in the settling zone (7) are refluxed to the acid adding regulation zone (2) through the sludge reflux pump (20).
2. The high standard advanced treatment system for refractory organic matters in comprehensive wastewater of an industrial park according to claim 1, characterized in that: stirrers are arranged in the acid adding adjusting area (2), the ferrous iron adding area (3), the main reaction area (4), the alkali adding adjusting area (5) and the coagulation aiding area (6).
3. The high standard advanced treatment system for refractory organic matters in comprehensive wastewater of an industrial park according to claim 1, characterized in that: the main reaction zone (4) is divided into four reaction grids (4-1, 4-2, 4-3 and 4-4), stirrers are arranged in the four reaction grids, and H is arranged in the first reaction grid (4-1)2O2A first alkali liquor adding point (13), a first powdered carbon adding point (14) and a first pH on-line detector (18) are arranged in the fourth reaction grid (4-4).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183000A (en) * | 2019-06-20 | 2019-08-30 | 中国市政工程华北设计研究总院有限公司 | Hardly degraded organic substance high standard advanced treatment system and operation method in the comprehensive waste water in industrial park |
| CN116161789A (en) * | 2023-01-10 | 2023-05-26 | 中蓝连海设计研究院有限公司 | Biological denitrification method for high-salt high-calcium wastewater |
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2019
- 2019-06-20 CN CN201920933260.2U patent/CN211255496U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183000A (en) * | 2019-06-20 | 2019-08-30 | 中国市政工程华北设计研究总院有限公司 | Hardly degraded organic substance high standard advanced treatment system and operation method in the comprehensive waste water in industrial park |
| CN116161789A (en) * | 2023-01-10 | 2023-05-26 | 中蓝连海设计研究院有限公司 | Biological denitrification method for high-salt high-calcium wastewater |
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