CN213623724U - Food wastewater treatment system - Google Patents
Food wastewater treatment system Download PDFInfo
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- CN213623724U CN213623724U CN202021676404.XU CN202021676404U CN213623724U CN 213623724 U CN213623724 U CN 213623724U CN 202021676404 U CN202021676404 U CN 202021676404U CN 213623724 U CN213623724 U CN 213623724U
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Abstract
A food wastewater treatment system comprises a pretreatment system, an anaerobic treatment system and an aerobic treatment system, wherein the pretreatment system comprises a grating tank, an oil separation tank and a regulating tank which are sequentially connected; the anaerobic treatment system comprises an anaerobic reaction tank; the aerobic treatment system comprises a contact oxidation tank and a secondary sedimentation tank which are connected in sequence; the grid pond is connected with an external wastewater pipe, the regulating reservoir is connected with the anaerobic reaction tank, the water outlet of the anaerobic reaction tank is connected with the contact oxidation tank, the water outlet of the secondary sedimentation tank is connected with an external drain pipe, and the sludge outlet of the secondary sedimentation tank is connected with the anaerobic reaction tank. The utility model discloses it is suitable reasonable, abolish the treatment effect good, do not need extra medicament to add and reduced secondary pollution, can effectively reduce the mud production in the whole processing procedure, have fine popularization and application and worth.
Description
Technical Field
The utility model relates to a waste water treatment technical field specifically is a processing system that is arranged in food production processes such as leisure food, soyfood, beer beverage, meat to produce waste water.
Background
With the increasing economic level of China, the food industry is developed vigorously, and a large amount of waste water is generated in the food production process, for example, in a raw material cleaning section, a large amount of sandy soil sundries, leaves, skins, scales, meat, feathers, hairs and the like enter the waste water, so that the discharged waste water contains a large amount of suspended matters and grease; in order to increase the color, fragrance and taste of food and prolong the storage life of the food, various food additives and preservatives are used in the production section and the forming section, the various additives cannot be completely utilized in the processing process, and the unused part enters waste water, so that the waste water contains a large amount of organic matters and chemical residual liquid, and the complexity of chemical components of the waste water is increased.
The raw materials of the food industry are wide, and the products are various, so the water quantity and the water quality of the discharged wastewater are greatly different, and the main pollution components in the wastewater comprise: acids, alkalis, salts, saccharides, etc. dissolved in the wastewater; silt and other organic matters carried in the raw materials; pathogenic bacteria, and the like; solid matter floating in the wastewater, such as vegetable leaves, fruit peel, minced meat, bird feather, etc.; substances suspended in the wastewater, such as fats, proteins, starches, colloidal substances, etc. The suspended matter content in the food wastewater is high, the food wastewater is easy to be nourished, the organic matters after deposition easily generate stink, the environment is greatly polluted due to untimely treatment, and the existing food wastewater treatment faces the following problems: the components of the wastewater are complex, and the water quality and the water quantity are unstable; the dosage of the water treatment agent is large, and the secondary pollution is serious; the sludge production amount is large, and the treatment cost is high; the management difficulty is large, and the treated wastewater faces the risk of unstable standard-reaching discharge. Therefore, the utility model aims at developing a processing system to food waste water to better satisfy the actual need.
SUMMERY OF THE UTILITY MODEL
The utility model provides a food wastewater treatment system to solve the defects in the prior art.
The utility model provides a technical problem adopt following technical scheme to realize:
a food wastewater treatment system comprises a pretreatment system, an anaerobic treatment system and an aerobic treatment system, wherein the pretreatment system comprises a grating tank, an oil separation tank and a regulating tank which are sequentially connected; the anaerobic treatment system comprises an anaerobic reaction tank; the aerobic treatment system comprises a contact oxidation tank and a secondary sedimentation tank which are connected in sequence; the grid pond is connected with an external wastewater pipe, the regulating reservoir is connected with the anaerobic reaction tank, the water outlet of the anaerobic reaction tank is connected with the contact oxidation tank, the water outlet of the secondary sedimentation tank is connected with an external drain pipe, and the sludge outlet of the secondary sedimentation tank is connected with the anaerobic reaction tank.
The utility model discloses in, bottom or lower part are provided with the water inlet pipe net in the anaerobic reaction jar, and water inlet pipe net bottom evenly distributed has a plurality of delivery ports, upper portion is provided with the three-phase separator in the anaerobic reaction jar, and the three-phase separator is used for separation water, gas and mud, the delivery port of anaerobic reaction jar set up in the upper portion of three-phase separator.
The utility model discloses in, the water inlet pipe net has two-layerly, and two-layer inlet tube net connects same root inlet tube, and every layer of inlet tube net is the chess board column structure that the level was arranged, the water inlet pipe net bottom the delivery port opening sets up towards bottom and slope.
In the utility model, the ratio of height to diameter of the anaerobic reaction tank is 10: 4-20: 4, and the anaerobic reaction tank is provided with a bacterium feeding port
The utility model discloses in, be provided with many support columns in the contact oxidation pond, the fixed absorption ball that is provided with a plurality of interval arrangements on the every support column, the volume sum of absorption ball accounts for contact oxidation pond volumetric 20 ~ 40%.
The utility model discloses in, many the support column matrix distribution in the contact oxidation pond, support column vertical layout, support column bottom with contact oxidation pond fixed connection, the adsorption ball on the support column is along vertical direction evenly distributed.
The utility model discloses in, roots's fan is connected to the contact oxidation pond bottom.
The utility model discloses in, be provided with the rotary drum grid in the grid pond, the slope of rotary drum grid sets up in the grid pond.
The utility model discloses in, the oil interceptor includes main cell body and vice cell body, and the volume ratio of main cell body and vice cell body is 7:3 ~ 8:2, set up the scraper blade in the main cell body, the delivery port of main cell body bottom with the equalizing basin is connected, vice cell body is used for holding the oil slick dross in the main cell body.
The utility model discloses in, set up agitating unit in the equalizing basin, agitating unit goes up the stirring area of stirring leaf and accounts for 60 ~ 70% of equalizing basin bottom of the pool area.
The utility model discloses in, set up the mud scraper in the secondary sedimentation pond, secondary sedimentation tank bottom sets up the bagger, and the bagger bottom sets up the mud discharging port, the mud discharging port with the sub-unit connection of anaerobic reaction jar.
Has the advantages that: food wastewater treatment system, its advantage that has is:
1) carry out abundant anaerobic reaction in the anaerobic reaction jar, common saccharide, protein and grease etc. are decomposed into methane, water and carbon dioxide in the anaerobic reaction jar in the food waste water, consequently, whole flow mud production volume is few, compares in traditional technology, need not to set up equipment such as mud filter pressing device, has practiced thrift area and artifical intensity of labour greatly.
2) The anaerobic fermentation tank not only directly acts on the anaerobic decomposition of the food wastewater, but also undertakes the anaerobic decomposition of the return sludge of the secondary sedimentation tank, thereby greatly reducing the consumption of electric energy, and the operation cost is 25 to 30 percent of that of the traditional process under the condition of the same removal efficiency of the load pollutants COD and the ammonia nitrogen.
3) A three-phase separator is arranged in the anaerobic fermentation tank, the separated supernatant is further subjected to full oxidation reaction through anaerobic bacteria, and in the oxidation reaction process, various impurities dissolved in the wastewater are fully adsorbed by the uniquely designed adsorption balls, so that the wastewater treatment effect is further ensured;
4) in the wastewater pretreatment process, only the combination of the grid tank and the oil separation tank is adopted to remove large-particle inorganic particles and floating oil scum, and the subsequent anaerobic reaction tank allows a small amount of small particles and colloidal substances contained in the wastewater to enter.
Drawings
Fig. 1 is a schematic diagram of a preferred embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a support pillar according to a preferred embodiment of the present invention.
Wherein: 1. a water collecting tank; 2. a grid tank; 3. a drum grid; 4. an oil separation tank; 5. a regulating tank; 6. an anaerobic reaction tank; 7. a water inlet pipe network; 8. a contact oxidation pond; 9. a support pillar; 10. adsorbing the ball; 11. a Roots blower; 12. a secondary sedimentation tank; 13. a mud bucket; 14. a mud scraper; 15. a three-phase separator.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
As shown in fig. 1.
The food wastewater treatment system of the embodiment comprises a pretreatment system, an anaerobic treatment system and an aerobic treatment system.
The pretreatment system comprises a grating tank 2, an oil separation tank 4 and an adjusting tank which are connected in sequence; the grating pool 2 is connected with an external wastewater pipe, a water collecting pool 1 is arranged between the grating pool 2 and the external wastewater pipe, the water collecting pool 1 is used for collecting external wastewater and inputting the external wastewater into the grating pool 2 at a certain flow velocity, a drum-type grating 3 is arranged in the grating pool 2, the drum-type grating 3 is obliquely arranged in the grating pool 2, in the embodiment, the drum-type grating 3 and a horizontal plane form 35 degrees, the wastewater flows in from an end head, solid garbage is filtered in a grating frame, a cleaning arm with rake teeth cleans grating gaps when in circumferential motion, the rake teeth extend into the grating network to take out solids, and filtered water flows out from the grating gaps of the grating network and enters an oil separation pool 4, the oil separation pool 4 comprises a main pool body and an auxiliary pool body, the volume ratio of the main pool body to the auxiliary pool body is 7: 3-8: 2, in the embodiment, the volume ratio of the main pool body to the auxiliary pool body is 3:1, wherein a scraper plate is arranged in the, the scraper blade is used for scraping the internal oil slick dregs of main cell and gets and get into vice cell body, and the internal oil slick dregs of vice cell body is regularly siphoned away by the soil pick-up car and is dealt with by the special messenger, and the lower part clear liquid of main cell body and vice cell body bottom gets into equalizing basin 5, and the bottom is provided with agitating unit in the equalizing basin 5, and the stirring area of the last stirring leaf of agitating unit accounts for 60 ~ 70% of 5 bottom of the pool areas of equalizing basin, and the agitator rotational speed sets up to 10 ~ 15r/min to reach abundant even effect of stirring, prevent the deposit, the cell body volume of equalizing basin 5 is about 50% ~ 60% of waste water daily treatment water yield.
The anaerobic treatment system comprises an anaerobic reaction tank 6; the anaerobic reaction tank 6 is a cylindrical structure with the height-diameter ratio of 10: 4-20: 4, the material can be reinforced concrete or glass fiber reinforced plastics, the diameter of the structure is not less than 4m, R is not less than 5m, a bacterium feeding port is formed in the anaerobic reaction tank 6 and used for feeding strictly screened anaerobic bacteria according to actual needs, the anaerobic bacteria can effectively decompose saccharides, proteins, grease and the like, so that the sludge is fully degraded, dead bacteria remains in the returned sludge in the secondary sedimentation tank 12 can be subjected to anaerobic decomposition by bacteria in a logarithmic growth phase, an internal circulation loop of the whole device is realized, and residual sludge is not discharged in a small amount even. The bottom is provided with into water pipe network 7 in the anaerobic reaction jar 6, it is two-layer to advance water pipe network 7, two-layer water pipe network 7 is responsible for through same root intaking and is connected with equalizing basin 5, every layer of intake pipe network 7 is the chess column structure of horizontal arrangement, every layer of intake pipe network 7 bottom evenly distributed has a plurality of delivery ports, delivery port opening sets up towards bottom and slope, in the embodiment, 45 openings are down to the delivery port slant, thereby can evenly intake and carry out even impact in to the anaerobism pond, play fine stirring effect, prevent impurity deposition in jar body bottom and lead to the degradation insufficient, and the delivery port that the slope set up can effectively prevent the jam of delivery port. The upper part of the anaerobic reaction tank 6 is provided with a three-phase separator 15, the three-phase separator 15 is used for separating water, gas and sludge, the water outlet of the anaerobic reaction tank 6 is arranged on the upper part of the three-phase separator 15, and clear water obtained by separation of the three-phase separator 15 enters the contact oxidation tank 8.
The aerobic treatment system comprises a contact oxidation pond 8 and a secondary sedimentation pond 12 which are connected in sequence, wherein the contact oxidation pond 8 is multiple, the contact oxidation ponds 8 are arranged side by side and are sequentially communicated through overflow ports, a plurality of support columns 9 are arranged inside the contact oxidation pond 8, the support columns 9 are distributed in the contact oxidation pond 8 in a matrix manner, the support columns 9 are vertically arranged, the bottom of each support column 9 is fixedly connected with the contact oxidation pond 8, in the embodiment, the bottom of each support column 9 is in threaded connection with the contact oxidation pond 8, and therefore the aerobic treatment system is convenient to disassemble and replace. Every support column 9 is gone up the fixed absorption ball 10 that is provided with a plurality of interval arrangements, and absorption ball 10 is for adsorbing the pompon, and the volume sum of absorption ball 10 accounts for 8 volumetric 20 ~ 40% in the contact oxidation pond, in this embodiment, the absorption ball 10 on the support column 9 is along vertical direction evenly distributed, and the volume sum of absorption ball 10 accounts for 8 volumetric 30% in the contact oxidation pond, because the specific surface who adsorbs the pompon is big, can provide 80 ~ 100 times effective attachment area, is the quality guarantee of sewage treatment back end. The lower part of the contact oxidation pond 8 is connected with a Roots blower 11, the Roots blower 11 provides aeration, and the aeration water inlet ratio is set to be 15-20. Waste water after the contact reaction pond is handled gets into two heavy ponds 12, the outside drain pipe is connected to the delivery port of two heavy ponds 12, set up mud scraper 14 in two heavy ponds 12, two heavy pond 12 bottoms set up bagger 13, bagger 13 bottoms set up the mud discharging hole, the mud discharging hole is connected with the sub-unit of anaerobic reaction jar 6, mud fully degrades through the anaerobe in anaerobic reaction jar 6, thereby greatly reduce sludge discharge, realize the zero release of mud even, greatly reduce sludge treatment's burden.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A food wastewater treatment system is characterized by comprising a pretreatment system, an anaerobic treatment system and an aerobic treatment system, wherein the pretreatment system comprises a grating tank, an oil separation tank and a regulating tank which are sequentially connected; the anaerobic treatment system comprises an anaerobic reaction tank; the aerobic treatment system comprises a contact oxidation tank and a secondary sedimentation tank which are connected in sequence; the grid pond is connected with an external wastewater pipe, the regulating reservoir is connected with the anaerobic reaction tank, the water outlet of the anaerobic reaction tank is connected with the contact oxidation tank, the water outlet of the secondary sedimentation tank is connected with an external drain pipe, and the sludge outlet of the secondary sedimentation tank is connected with the anaerobic reaction tank.
2. The food wastewater treatment system according to claim 1, wherein a water inlet pipe network is arranged at the bottom or lower part of the anaerobic reaction tank, a plurality of water outlets are uniformly distributed at the bottom of the water inlet pipe network, a three-phase separator is arranged at the upper part of the anaerobic reaction tank and used for separating water, gas and sludge, and the water outlets of the anaerobic reaction tank are arranged at the upper part of the three-phase separator.
3. The food waste water treatment system according to claim 2, wherein the water inlet pipe network has two layers, two layers of water inlet pipe networks are connected with the same water inlet pipe, each layer of water inlet pipe network is a chessboard-like structure horizontally arranged, and the water outlet opening at the bottom of the water inlet pipe network faces to the bottom and is obliquely arranged.
4. The food wastewater treatment system according to claim 3, wherein the height-to-diameter ratio of the anaerobic reaction tank is 10: 4-20: 4, and a bacteria feeding port is formed in the anaerobic reaction tank.
5. The food wastewater treatment system according to claim 1, wherein a plurality of support columns are arranged in the contact oxidation tank, a plurality of adsorption balls are fixedly arranged on each support column, and the sum of the volumes of the adsorption balls accounts for 20-40% of the volume of the contact oxidation tank.
6. The food wastewater treatment system according to claim 5, wherein a plurality of the support columns are distributed in a matrix manner in the contact oxidation tank, the support columns are vertically arranged, the bottoms of the support columns are fixedly connected with the contact oxidation tank, and the adsorption balls on the support columns are uniformly distributed in the vertical direction.
7. The food waste water treatment system of claim 5 wherein a Roots blower is connected to the bottom of the contact oxidation tank.
8. The food waste water treatment system as claimed in claim 1, wherein a drum grating is disposed in the grating tank, and the drum grating is disposed in the grating tank to be inclined.
9. The food wastewater treatment system according to claim 1, wherein the oil separation tank comprises a main tank body and an auxiliary tank body, the volume ratio of the main tank body to the auxiliary tank body is 7: 3-8: 2, a scraper is arranged in the main tank body, a water outlet at the bottom of the main tank body is connected with the adjusting tank, and the auxiliary tank body is used for accommodating floating oil scum in the main tank body.
10. The food wastewater treatment system according to claim 1, wherein a stirring device is arranged in the regulating reservoir, and the stirring area of a stirring blade on the stirring device accounts for 60-70% of the area of the bottom of the regulating reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021676404.XU CN213623724U (en) | 2020-08-13 | 2020-08-13 | Food wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021676404.XU CN213623724U (en) | 2020-08-13 | 2020-08-13 | Food wastewater treatment system |
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| CN213623724U true CN213623724U (en) | 2021-07-06 |
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| CN202021676404.XU Active CN213623724U (en) | 2020-08-13 | 2020-08-13 | Food wastewater treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114031195A (en) * | 2021-10-18 | 2022-02-11 | 湖南沃思环保科技有限公司 | Zero-dosing treatment system and treatment method for food processing wastewater |
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2020
- 2020-08-13 CN CN202021676404.XU patent/CN213623724U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114031195A (en) * | 2021-10-18 | 2022-02-11 | 湖南沃思环保科技有限公司 | Zero-dosing treatment system and treatment method for food processing wastewater |
| CN114031195B (en) * | 2021-10-18 | 2024-05-14 | 湖南沃思环保科技有限公司 | Food processing wastewater zero-dosing treatment system and treatment method |
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