CN214611872U - A integration sewage treatment plant for chemical wastewater handles - Google Patents
A integration sewage treatment plant for chemical wastewater handles Download PDFInfo
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- CN214611872U CN214611872U CN202022225267.4U CN202022225267U CN214611872U CN 214611872 U CN214611872 U CN 214611872U CN 202022225267 U CN202022225267 U CN 202022225267U CN 214611872 U CN214611872 U CN 214611872U
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Abstract
An integrated sewage treatment device for chemical wastewater treatment is used for chemical wastewater treatment. The method comprises the following steps: a pH adjusting chamber for adjusting pH and performing a chemical precipitation reaction process of heavy metals; the flocculation settling chamber is used for removing partial organic matters and suspended matters in the water body on one hand and settling heavy metal precipitates generated in the pH adjusting chamber on the other hand; a filtering chamber, wherein sewage subjected to chemical precipitation and flocculation reaction is filtered by a filter cloth filter to remove sediments and suspended matters in a water body; the clear water tank is used for guiding clear water after being filtered by the filter cloth filter to the water outlet pipe; a perforated plate is arranged between the flocculation settling chamber and the filtering chamber, and the filter cloth filter is arranged in the filtering chamber. The technical effects are as follows: (1) can rapidly separate heavy metals. (2) The integration degree of the sewage treatment of the land parcel restoration of the waste chemical plant is improved. (3) On the basis of ensuring the effect of removing the heavy metal in the water body, the occupied area is small, the treated water quantity is large, and the applicability is strong.
Description
Technical Field
The utility model relates to the technical field of environmental protection for chemical wastewater treatment.
Background
Due to the rapid development of the industry, the soil environment condition is not optimistic overall, the soil pollution in part of regions is serious, the soil environment quality of cultivated land is great, the soil environment problem of industrial and mining abandoned lands is prominent, and the field pollution remediation is slow.
In the field pollution remediation project of the chemical plant waste land, the phenomena of residual wastewater pools in the field and chemical wastewater in the production process are common. And because the abandonment of the site causes the original sewage treatment facility to be invalid, the method becomes a difficult point in the integral repair project of the site.
In this type of project, wastewater remediation projects are mostly characterized by the following: (1) the water quality components are complex, the byproducts are many, the reaction raw materials are generally solvent substances or cyclic scaling compounds, and the treatment difficulty of the chemical wastewater is increased; (2) the pollutant content in the chemical wastewater is high, which is caused by incomplete reaction of raw materials or the fact that a large amount of solvent media enters a chemical wastewater system in the production process of the raw materials; (3) the chemical wastewater contains a plurality of toxic and harmful substances, and a plurality of organic pollutants in the fine chemical wastewater are toxic and harmful to microorganisms; (4) the chemical wastewater contains many substances which are difficult to degrade biologically and has poor biodegradability; (5) due to the limitation of a field, the water quantity of the waste water is not large, and is generally hundreds of tons to thousands of tons; (6) because the land parcel is a waste land parcel and is basically repaired at one time, new waste water is not generated after the repair is finished.
Because the B/C of the wastewater is low and the biodegradability is poor, and the wastewater treatment of the engineering is disposable, the process is difficult to design into continuous flow, and the biochemical method is difficult to adopt. At present, chemical technologies such as chemical precipitation, chemical oxidation, chemical reduction and the like are mostly adopted to solve the problem of sewage treatment. The main engineering solution is as follows: the process flow is determined according to the characteristics of the wastewater, a sewage pool is built on a construction site and matched with a movable pool and waste pools (mostly existing) of continued original factory plots to form the process flow, and partial cases are combined with integrated sewage treatment equipment in the process flow to jointly complete the treatment of the wastewater.
The integrated sewage treatment equipment technology in the current development stage has the following characteristics: the impact load resistance is strong. The average residence time of the contact oxidation method is more than 6 hours; has the capability of removing nitrogen and phosphorus, and can achieve the capability of treating industrial wastewater, domestic sewage and urban sewage by adjusting the structure of equipment; most of the fillers in the contact oxidation pond are combined soft fillers, so that the contact oxidation pond is light in weight, high in strength, stable in physical and chemical properties, large in specific surface area, strong in biomembrane adhesion capacity and high in contact efficiency of sewage and biomembranes; the contact oxidation tank adopts an aerator to perform blast aeration, so that the fiber bundle continuously floats, the aeration is uniform, the microorganism grows mature, and the contact oxidation tank has the characteristics of an activated sludge method; the effluent quality is stable, the sludge yield is low, and the treatment is easy; the submersible pump can be arranged in equipment, so that the engineering investment is reduced; the equipment can be arranged on the ground or buried underground. When the cable is buried underground, the upper part of the cable can be covered for greening, the occupied area of a plant area is small, and the ground structures are few; automatic control is easy to complete, and management operation is simple. The equipment can be connected to an automobile to form movable integrated sewage treatment equipment.
By applying the solution and the technology, a better effect can be achieved in the engineering part of wastewater treatment in the land parcel restoration of the waste chemical plant. However, there are some significant problems with the above solutions, which affect their application in engineering. The main problems are as follows:
(1) most of the sewage treatment integrated equipment adopts biochemical processes (such as A/0, A/A/O, MBR and the like), most of the sewage treatment integrated equipment aims at the treatment of continuously generated sewage, and the sewage treatment integrated equipment is difficult to be suitable for the treatment of residual wastewater in the project of land reclamation of waste chemical plants. The integrated sewage treatment equipment integrating the physicochemical treatment technology in the market is less, and the number of the optional products is less.
(2) The implementation of the treatment of the residual wastewater in the project of the land parcel restoration of the abandoned chemical plant generally has lower integration degree, the links of the process are poorer, the construction period is prolonged to a certain extent, the cost is increased, and the risk of realizing the engineering target is increased.
(3) Since such waste water is generally treated chemically, it has been found in engineering practice that the process requires the introduction of a metal catalyst in many cases. For example, in the treatment of high concentration organic wastewater, Fenton oxidation is often used, which uses Fe2+Catalysis H2O2Is oxidized and removed withAn organic matter; in the treatment of benzene series wastewater, a persulfate catalysis method is often adopted; the removal of nitrate adopts a chemical reduction method which can introduce excessive Ze2+And so on. The pH value is frequently adjusted in the process, and the process is overlong. And the precipitation removal of metal also needs to build another precipitation tank, so that the occupied area is greatly increased, and the method becomes a remarkable problem in the repair of the small chemical plant plots in some places.
Disclosure of Invention
The utility model provides an integration sewage treatment plant that can quickly separating heavy metal uses above in the engineering, be used for the regulation of chemical process waste water treatment in pH, the heavy metal process of getting rid of specially to certain organic matter gets rid of the effect concurrently, improves the degree of integrating of waste water treatment process in above-mentioned type engineering to a certain extent, thereby reduces occupation of land, time limit for a project, expense etc..
In order to realize the purpose of the invention, the technical scheme is as follows:
an integrated sewage treatment device for chemical wastewater treatment, the device comprising:
a pH adjusting chamber for adjusting pH and performing a chemical precipitation reaction process of heavy metals;
the flocculation settling chamber is used for removing partial organic matters and suspended matters in the water body on one hand and settling heavy metal precipitates generated in the pH adjusting chamber on the other hand;
a filtering chamber, wherein sewage subjected to chemical precipitation and flocculation reaction is filtered by a filter cloth filter to remove sediments and suspended matters in a water body;
the clear water tank is used for guiding clear water after being filtered by the filter cloth filter to the water outlet pipe;
a perforated plate is arranged between the flocculation settling chamber and the filtering chamber, and the filter cloth filter is arranged in the filtering chamber.
Further, the pH adjusting chamber comprises a water-medicine mixer for rapidly mixing the sewage and the acid solution or the alkali solution.
Further, a submersible pump is arranged in the pH adjusting chamber, and sewage is conveyed to the flocculation settling chamber.
Further, the flocculation settling chamber comprises a water-medicine mixer for rapidly mixing the sewage and the flocculation reagent.
Furthermore, the filter cloth filter is provided with a back flush device and a back flush slag discharge pump which are connected with the filter cloth filter, and sludge generated by back flush is discharged through the back flush slag discharge pump.
Further, the filter chamber is provided with a liquid level controller for controlling the water level in the equipment.
Furthermore, the pH adjusting chamber and the flocculation settling chamber are both connected with a medicine feeding device.
Furthermore, the flocculation settling chamber and the bottom of the filtering chamber are both provided with a sludge discharge pipe which is connected with a sludge discharge pump and used for pumping out the settled sludge.
The technical effects of the utility model are that:
(1) can rapidly separate heavy metals. (2) The integration degree of the sewage treatment of the land parcel restoration of the waste chemical plant is improved. (3) On the basis of ensuring the effect of removing the heavy metal in the water body, the water treatment device occupies a small area, has large water treatment amount and strong applicability, and can be particularly used in projects which can only continue to use the original water tank of a waste chemical plant and cannot establish a water tank and a water treatment facility under severe conditions.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a device body; 2. a pH adjusting chamber; 3. a flocculation settling chamber; 4. a filtering chamber; 5. a clear water tank; 6. a liquid level controller; 7. a medicine feeding device; 8. a water-medicine mixer; 9. a cloth filter; 10. a back-washing device; 11. back flushing slag discharging pump; 12. a sludge discharge pump; 13. a submersible pump; 14. a perforated plate.
Detailed Description
In order to make the novel objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1; the utility model discloses a realize like this, a integration sewage treatment plant for chemical wastewater handles, the device includes: a pH adjusting chamber 2 mainly used for adjusting pH so as to enable heavy metal ions to generate hydroxide precipitates; the wastewater enters a flocculation precipitation link after heavy metal precipitation in a flocculation precipitation chamber 3, and partial organic matters in the water body are removed; a filter chamber 4, after the sewage is subjected to two-stage sedimentation, filtering to remove sediments generated in water; and (5) discharging the final clean water into the clean water tank and discharging the final clean water out of the equipment through a water outlet pipe.
Specifically, pH mediation room 2 and flocculation and precipitation room 3 all connect one set of automatic medicine device 7 of advancing, should advance medicine device 7 in the device body 1 outside automatically, automatic medicine device 7 of advancing contain one dissolve medicine bucket, a mixer and one advance medicine flow pump. An automatic medicine feeding device 7 connected with the pH adjusting chamber 2 is mainly added with a proper amount of acid or alkali according to the parameters of water feeding to adjust the pH of the sewage to be within the pH range of the heavy metal ion precipitation; the automatic medicine feeding device 7 connected with the flocculation precipitation chamber 3 is mainly used for adding the flocculating agent according to the sewage flow. The pH adjusting chamber 2 and the flocculation settling chamber 3 are both provided with a water-medicine mixer 8 which is connected with a sewage pipe and a medicine inlet pipe to ensure the rapid mixing of sewage and the medicine.
The bottom of the pH adjusting chamber 2 is provided with a submersible pump 13 for discharging indoor sewage to the flocculation settling chamber 3; a perforated wall 14 is arranged between the flocculation settling chamber 3 and the filtering chamber 4, and sewage in the flocculation settling chamber 3 enters the filtering chamber 4 through a pore passage; a filter cloth filter 9 is fixedly arranged at the bottom of the filtering chamber 4, sewage enters a cavity of the filter cloth filter 9 through filter cloth, suspended matters are intercepted on the filter cloth, and water in the cavity is discharged to the clean water tank 5 through a water collecting pipe connected with the filter cloth filter 9.
The bottom of the filter cloth filter 9 of the utility model is provided with a back washing device 10 for back washing the filter cloth filter 9. The back washing device 10 is connected with a back washing slag discharge pump 11 and is used for discharging back washing mud. The bottom of the flocculation settling chamber 3 and the bottom of the filtering chamber 4 are both connected with a sludge discharge pump 12 for discharging sludge at the bottom of the flocculation settling chamber 3 and the bottom of the filtering chamber 4.
The utility model discloses equipment main body size is wide x high x long: 2.2 m.times.2.4 m.times.4.4 m. The effective volume of the pH adjusting chamber is 4m3The Hydraulic Retention Time (HRT) is designed to be 1 according to the chemical precipitation reaction timeThe reaction can be ensured to be complete within 0 min; the Hydraulic Retention Time (HRT) of the flocculation reaction is generally 3-5 min, and for facilitating equipment manufacture and design calculation, the size design of the flocculation settling chamber is consistent with that of the pH regulating chamber, and the effective volume is 4m3The Hydraulic Retention Time (HRT) is 10min, and the flocculation reaction is complete. The aim of removing the heavy metals in the water body can be completely achieved by adjusting the pH value of the water body.
The horizontal cross-sectional area of the main body device is 9.68m according to the size design of the device2Considering the medicine feeding device, the arrangement of water inlet and outlet pipes, the equipment foundation, the passageway, the power distribution and central control system, the total floor area is less than 30m2And the occupied area is small.
Daily water treatment amount: Q-V/HRT-4 × 24 × 60/10-576 m3(d), i.e. the daily water treatment quantity can exceed 500m3。
The utility model is used for chemical wastewater's integrated sewage treatment, integrated heavy metal chemical precipitation, flocculation and precipitation, filter cloth filtration process link, sewage generate the heavy metal after mixing with appropriate amount of acid (alkali) and deposit the back, and sewage continues to get rid of partial organic matter with the flocculating agent reaction, will deposit through filter cloth filtration equipment at last and get rid of to reach the mesh of getting rid of heavy metal ion in the water fast.
The utility model discloses the device is the integrated form, only needs advance outlet conduit, row's mud pipeline, distribution installation can normal operating after transporting to the scene. When the equipment runs, the central control room is used for controlling the operation of matched equipment such as a submersible pump, a medicine feeding system (a medicine feeding pump and a stirrer), a filter cloth filtering system (a slag discharge pump and backwashing) and the like, and the equipment runs continuously.
Claims (8)
1. The utility model provides an integration sewage treatment plant for chemical industry effluent treatment which characterized by: the device includes:
a pH adjusting chamber for adjusting pH and performing a chemical precipitation reaction process of heavy metals;
the flocculation settling chamber is used for removing partial organic matters and suspended matters in the water body on one hand and settling heavy metal precipitates generated in the pH adjusting chamber on the other hand;
a filtering chamber, wherein sewage subjected to chemical precipitation and flocculation reaction is filtered by a filter cloth filter to remove sediments and suspended matters in a water body;
the clear water tank is used for guiding clear water after being filtered by the filter cloth filter to the water outlet pipe;
a perforated plate is arranged between the flocculation settling chamber and the filtering chamber, and the filter cloth filter is arranged in the filtering chamber.
2. The integrated sewage treatment plant for chemical wastewater treatment according to claim 1, wherein: the pH adjusting chamber comprises a water-medicine mixer for rapidly mixing the sewage and the acid liquor or the alkali liquor.
3. The integrated sewage treatment apparatus for chemical wastewater treatment according to claim 1 or 2, wherein: the pH adjusting chamber is provided with a submersible pump for conveying sewage to the flocculation settling chamber.
4. The integrated sewage treatment plant for chemical wastewater treatment according to claim 1, wherein: the flocculation settling chamber comprises a water-medicine mixer used for quickly mixing the sewage and the flocculation reagent.
5. The integrated sewage treatment plant for chemical wastewater treatment according to claim 1, wherein: the filter cloth filter is provided with a back flush device and a back flush slag discharging pump which are connected with the filter cloth filter, and sludge generated by back flushing is discharged through the back flush slag discharging pump.
6. The integrated sewage treatment plant for chemical wastewater treatment according to claim 1, wherein: the filter chamber is provided with a liquid level controller for controlling the water level in the equipment.
7. The integrated sewage treatment plant for chemical wastewater treatment according to claim 1, wherein: the pH adjusting chamber and the flocculation settling chamber are both connected with a medicine feeding device.
8. The integrated sewage treatment apparatus for chemical wastewater treatment according to claim 1 or 7, wherein: the flocculation settling chamber and the bottom of the filtering chamber are both provided with sludge discharge pipes which are connected with a sludge discharge pump and used for pumping out the settled sludge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202022225267.4U CN214611872U (en) | 2020-10-09 | 2020-10-09 | A integration sewage treatment plant for chemical wastewater handles |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022225267.4U CN214611872U (en) | 2020-10-09 | 2020-10-09 | A integration sewage treatment plant for chemical wastewater handles |
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| CN214611872U true CN214611872U (en) | 2021-11-05 |
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| CN202022225267.4U Active CN214611872U (en) | 2020-10-09 | 2020-10-09 | A integration sewage treatment plant for chemical wastewater handles |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114149064A (en) * | 2021-12-20 | 2022-03-08 | 江苏暨之阳环保科技有限公司 | Comprehensive treatment method for heavy metal overproof polluted area |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114149064A (en) * | 2021-12-20 | 2022-03-08 | 江苏暨之阳环保科技有限公司 | Comprehensive treatment method for heavy metal overproof polluted area |
| CN114149064B (en) * | 2021-12-20 | 2022-09-06 | 江苏暨之阳环保科技有限公司 | Comprehensive treatment method for heavy metal overproof polluted area |
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