WO2021114591A1 - Food industry wastewater treatment plant - Google Patents
Food industry wastewater treatment plant Download PDFInfo
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- WO2021114591A1 WO2021114591A1 PCT/CN2020/095264 CN2020095264W WO2021114591A1 WO 2021114591 A1 WO2021114591 A1 WO 2021114591A1 CN 2020095264 W CN2020095264 W CN 2020095264W WO 2021114591 A1 WO2021114591 A1 WO 2021114591A1
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F3/30—Aerobic and anaerobic 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
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
Definitions
- the utility model relates to a sewage treatment device, in particular to a waste water treatment device in the food industry.
- Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a water body or reuse.
- the difficulty of wastewater treatment in the food industry is that the food industry has a wide range of materials and products, and the amount and quality of wastewater discharged from workshops vary greatly.
- the main pollutants of this type of wastewater include: solid impurities floating in the wastewater, such as vegetable leaves, minced meat, poultry feathers, etc.; substances suspended in the wastewater such as grease, protein, starch, colloids, etc.; Alkali, salt, sugar, etc.; some also contain a lot of sediment and other substances.
- the characteristics of food industry wastewater are high organic matter and suspended matter content, easy to erosive, and generally non-toxic. Therefore, it is necessary to design a treatment system for food industry sewage that can effectively remove organic matter and suspended matter in the sewage to ensure that the effluent quality is stable and meets the standard.
- the utility model provides a waste water treatment device for the food industry, which can operate continuously, efficiently and stably, realizes a higher water discharge standard, and is convenient for maintenance.
- the food industry wastewater treatment device of the utility model has a main structure including a wastewater treatment unit and an equipment integrated unit.
- the wastewater treatment unit mainly includes a regulating tank, a hydrolysis tank, a biological selection tank, an anoxic tank, a contact oxidation tank, and a secondary sedimentation tank.
- the equipment integrated unit mainly includes the air flotation treatment area, the dosing room, the fan room and the electric control cabinet.
- the air flotation equipment in the air flotation treatment area is a complete set of equipment, equipped with a dissolved gas system and automatic control device, according to the dissolved gas tank
- the pressure change automatically realizes the start and stop of the dissolved air pump; all units, equipment and facilities are connected through pipelines and auxiliary accessories.
- the hydrolysis tank is an improved ABR hydrolysis tank, equipped with a mixing and stirring device, which has a homogenizing effect on the inlet water, adds fillers in the outlet area, and reduces water flow.
- Speed to prevent sludge loss
- water retention time in the modified ABR hydrolysis tank is 3 ⁇ 25h.
- the biological selection pool is equipped with a mixing and stirring device, which has a homogenizing effect on the influent water, and the residence time of the water in the biological selection pool is 30-45min .
- the further technical solution of the food industry wastewater treatment device of the present invention can also be that the anoxic tank is equipped with a mixing and stirring device, which has a homogenizing effect on the inlet water, adds fillers in the tank, reduces the water flow speed, and prevents sludge. Loss, the water stays in the anoxic tank for 0.5 to 3h.
- a further technical solution can also be that the effective water depth of the contact oxidation tank is 3 to 5 m, and the aspect ratio is 1:2 to 1:1.
- the further technical solution of the food industry wastewater treatment device of the utility model can also be that the contact oxidation tank adopts a segmented design, which combines the activated sludge method and the biofilm method to achieve the effect of integration of advantages, and the segmented design
- the contact oxidation tank cultivates high-efficiency microbial populations at different stages, and the purification effect is enhanced; at the same time, the contact oxidation tank uses an air suspension fan for aeration, and adjusts the operating power of the fan to adjust the dissolved oxygen content in the tank.
- the further technical solution of the food industry wastewater treatment device of the present invention can also be that the surface load of the secondary sedimentation tank is 0.6-1.5 m 3 /m 2 .h, and an overflow weir is provided for effluent.
- a further technical solution can also be that the residence time of the water in the regulating tank is 6-12h.
- the residence time of the contact oxidation tank is determined according to the water quality and water volume;
- the dosing device in the dosing room is a complete set of equipment, including auxiliary equipment such as matching pumps, stirring, and dosing barrels;
- the diaphragm filter press used is a complete set of equipment, including auxiliary equipment such as matching pumps, flaps, and squeezing buckets.
- the food industry wastewater treatment device of the utility model solves the problems of incomplete hydrolysis of conventional treatment processes, low impact load resistance, unstable operation, and substandard effluent water.
- the improved ABR hydrolysis tank is equipped with a mixing and stirring device, and fillers are added in the tank to fully hydrolyze the complex organic matter in the water.
- the aerobic tank adopts a segmented design, which combines the activated sludge method and the biofilm method to achieve the effect of integration of advantages.
- the segmented design of the contact oxidation tank cultivates high-efficiency microbial populations at different stages, and the purification effect is enhanced.
- the air flotation equipment adopts a complete set of equipment, equipped with a dissolved gas system and automatic control device, which automatically realizes the start and stop of the dissolved gas pump according to the pressure change in the dissolved gas tank.
- the dosing system, air suspension fan, diaphragm filter press and electric control cabinet are centralized in the equipment unit, which is convenient for unified maintenance management.
- Figure 1 is a schematic diagram of the structure of the utility model
- the food industry wastewater treatment device of the utility model has a main structure including a wastewater treatment unit and an equipment integrated unit.
- the wastewater treatment unit mainly includes a regulating tank, a hydrolysis tank, a biological selection tank, an anoxic tank, a contact oxidation tank, and a secondary sedimentation tank.
- the equipment integrated unit mainly includes the air flotation treatment area, the dosing room, the fan room and the electric control cabinet.
- the air flotation equipment in the air flotation treatment area is a complete set of equipment, equipped with a dissolved gas system and automatic control device, according to the dissolved gas tank
- the pressure change automatically realizes the start and stop of the dissolved air pump; all units, equipment and facilities are connected through pipelines and auxiliary accessories.
- the hydrolysis tank is a modified ABR hydrolysis tank, equipped with a mixing and stirring device, which has a homogenizing effect on the incoming water, adds fillers in the water outlet area, reduces the water flow rate, and prevents sludge loss.
- the residence time of water in the modified ABR hydrolysis tank is 3 ⁇ 25h.
- the biological selection pool is equipped with a mixing and stirring device, which has a homogenizing effect on the inlet water, and the residence time of the water in the biological selection pool is 30-45 minutes.
- the anoxic tank is equipped with a mixing and stirring device to homogenize the incoming water. Fillers are added in the tank to reduce the water flow rate and prevent the loss of sludge.
- the water retention time in the anoxic tank is 0.5-3h.
- the effective water depth of the contact oxidation tank is 3 to 5 m, and the aspect ratio is 1:2 to 1:1.
- the contact oxidation tank adopts a segmented design, which combines the activated sludge method and the biofilm method to achieve the effect of integration of advantages.
- the segmented design of the contact oxidation tank cultivates high-efficiency microbial populations at different stages, and the purification effect is enhanced; at the same time;
- the contact oxidation tank uses an air suspension fan for aeration, and the dissolved oxygen content in the tank is adjusted by adjusting the operating power of the fan.
- the surface load of the secondary settling tank is 0.6-1.5m3/m2.h, and an overflow weir is provided for effluent.
- the residence time of the water in the regulating tank is 6-12h.
- the residence time of the contact oxidation tank is determined according to the water quality and water volume;
- the dosing device in the dosing room is a complete set of equipment, including auxiliary equipment such as matching pumps, stirring, and dosing barrels;
- the diaphragm filter press used is a complete set of equipment, including auxiliary equipment such as matching pumps, flaps, and squeezing buckets.
- the main structure of the food wastewater treatment process of this utility model includes a sewage treatment structure and an equipment complex.
- the sewage treatment The structure consists of 1, regulating tank, 2, accident tank, 4, hydrolysis tank, 5, biological selection tank, 6, anoxic tank, 7, contact oxidation tank, 8, secondary settling tank, 9, sludge thickening tank, 10. Sludge return well, etc.;
- the equipment complex consists of 3, air flotation machine, 11, blower room (first floor), 12, dosing room (second floor), 13, power distribution room (second floor), 14, Storage room (first floor), 15, filter press room and other components.
- the retention time of the regulating tank is 6h, and a mixer is set inside to play a role in homogenizing the water inflow.
- the residence time of the modified ABR hydrolysis tank was 17.3h.
- the improved ABR hydrolysis tank is equipped with a mixing and stirring device, which has a homogenizing effect on the inlet water, adding fillers in the outlet area, reducing the water flow rate, and preventing the loss of sludge.
- the residence time of the biological selection pool was 39 minutes.
- the biological selection pool is equipped with a mixing and stirring device, which has a homogenizing effect on the inlet water.
- the residence time of the hypoxic pool was 6h.
- the anoxic tank is equipped with a mixing and stirring device, which has a homogenizing effect on the inflow.
- the contact oxidation tank adopts a three-stage design, which combines the activated sludge method and the biofilm method to achieve the effect of integration of advantages.
- the segmented design of the contact oxidation tank cultivates high-efficiency microbial populations at different stages, and the purification effect is enhanced.
- the contact oxidation tank adopts an air suspension fan for aeration, and the dissolved oxygen content in the tank is adjusted by adjusting the operating power of the fan.
- the surface load of the secondary settling tank is 0.79m 3 /m 2 .h, and an overflow weir is set to discharge water.
- the air flotation equipment adopts a complete set of equipment, is equipped with a dissolved gas system and an automatic control device, and automatically realizes the start and stop of the dissolved gas pump according to the pressure change in the dissolved gas tank.
- the dosing device is a complete set of equipment, including supporting pumps, mixing, dosing barrels and other auxiliary equipment;
- the diaphragm filter press is a complete set of equipment, including supporting pumps, flaps, squeezing buckets and other auxiliary equipment;
- the influent COD is 2800mg/L
- the ammonia nitrogen is 95mg/L
- the total phosphorus is 10mg/L
- the suspended solids is 1000mg/L.
- the effluent water quality meets the sewage management standard of the park, namely: COD500mg/ L, ammonia nitrogen 15mg/L, total phosphorus 5mg/L, suspended solids 300mg/L.
Abstract
A food industry wastewater treatment plant, wherein a main structure comprises a sewage treatment unit and an equipment integration unit. The sewage treatment unit mainly comprises a regulating tank (1), a hydrolysis tank (4), a biological selection tank (5), an anoxic tank (6), a contact oxidation tank (7), and a secondary sedimentation tank (8). The equipment integration unit mainly comprises an air floatation treatment area, a dosing room (12), a blower room (11) and an electric control cabinet. Air floatation equipment in the air floatation treatment area is complete equipment, and is provided with an air dissolving system and an automatic control device, to automatically start or stop an air dissolving pump according to pressure changes in an air dissolving tank. All the units and equipment are connected through pipelines and auxiliary accessories.
Description
本实用新型涉及一种污水处理装置，具体涉及一种食品行业废水处理装置。The utility model relates to a sewage treatment device, in particular to a waste water treatment device in the food industry.
污水处理即为使污水达到排放入某一水体或再次使用的水质要求对其净化的过程。食品行业废水治理难点在于食物工业质料广泛，制品品种繁多，车间排出废水的水量、水质差异很大。该类废水主要污染物包括：漂浮于污水中的固体杂质，如菜叶、碎肉、禽羽等；悬浮在污水中的物质如油脂、蛋白质、淀粉、胶体等；溶解在污水中的酸、碱、盐、糖类等；有些还含有大量泥沙等物质。食品工业废水的特点即有机物和悬浮物含量高，易糜烂，一般无毒性，因此，需要设计一种针对食品行业污水，能够有效去除污水中有机物及悬浮物的处理系统，保证出水水质稳定达标。Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a water body or reuse. The difficulty of wastewater treatment in the food industry is that the food industry has a wide range of materials and products, and the amount and quality of wastewater discharged from workshops vary greatly. The main pollutants of this type of wastewater include: solid impurities floating in the wastewater, such as vegetable leaves, minced meat, poultry feathers, etc.; substances suspended in the wastewater such as grease, protein, starch, colloids, etc.; Alkali, salt, sugar, etc.; some also contain a lot of sediment and other substances. The characteristics of food industry wastewater are high organic matter and suspended matter content, easy to erosive, and generally non-toxic. Therefore, it is necessary to design a treatment system for food industry sewage that can effectively remove organic matter and suspended matter in the sewage to ensure that the effluent quality is stable and meets the standard.
发明内容Summary of the invention
本实用新型的针对上述问题，提供一种食品行业废水处理装置，该装置能够连续、高效、稳定运行，实现更高出水标准，检修方便。In view of the above-mentioned problems, the utility model provides a waste water treatment device for the food industry, which can operate continuously, efficiently and stably, realizes a higher water discharge standard, and is convenient for maintenance.
本实用新型所采用的技术方案是：The technical scheme adopted by the utility model is:
本实用新型的食品行业废水处理装置，主体结构包括污水处理单元和设备综合单元，所述的污水处理单元主要包括调节池、水解池、生物选择池、缺氧池、接触氧化池和二沉池；所述设备综合单元主要包括气浮处理区、加药间、风机房和电控柜，其中气浮处理区的气浮设备为成套设备，配备溶气系统及自控装置，根据溶气罐内压力变化自动实现溶气泵的启停；所有单元、设备设施通过管线及辅助配件连接。The food industry wastewater treatment device of the utility model has a main structure including a wastewater treatment unit and an equipment integrated unit. The wastewater treatment unit mainly includes a regulating tank, a hydrolysis tank, a biological selection tank, an anoxic tank, a contact oxidation tank, and a secondary sedimentation tank. ; The equipment integrated unit mainly includes the air flotation treatment area, the dosing room, the fan room and the electric control cabinet. The air flotation equipment in the air flotation treatment area is a complete set of equipment, equipped with a dissolved gas system and automatic control device, according to the dissolved gas tank The pressure change automatically realizes the start and stop of the dissolved air pump; all units, equipment and facilities are connected through pipelines and auxiliary accessories.
本实用新型的食品行业废水处理装置，其进一步的技术方案是所述的水解池为改良ABR水解池，配有混合搅拌装置，对进水起到均质作用，在出水区增加填料，降低水流速度，防止污泥流失，水在改良ABR水解池停留时间为3～25h。In the food industry wastewater treatment device of the utility model, its further technical proposal is that the hydrolysis tank is an improved ABR hydrolysis tank, equipped with a mixing and stirring device, which has a homogenizing effect on the inlet water, adds fillers in the outlet area, and reduces water flow. Speed, to prevent sludge loss, water retention time in the modified ABR hydrolysis tank is 3 ~ 25h.
本实用新型的食品行业废水处理装置，其进一步的技术方案还可以是所述的生物选择池配有混合搅拌装置，对进水起到均质作用，水在生物选择池停留时间为30-45min。For the food industry wastewater treatment device of the present utility model, its further technical solution can also be that the biological selection pool is equipped with a mixing and stirring device, which has a homogenizing effect on the influent water, and the residence time of the water in the biological selection pool is 30-45min .
本实用新型的食品行业废水处理装置，其进一步的技术方案还可以是所述的缺氧池配有混合搅拌装置，对进水起到均质作用，池内增加填料，降低水流速度，防止污泥流失，水在缺氧池停留时间为0.5～3h。The further technical solution of the food industry wastewater treatment device of the present invention can also be that the anoxic tank is equipped with a mixing and stirring device, which has a homogenizing effect on the inlet water, adds fillers in the tank, reduces the water flow speed, and prevents sludge. Loss, the water stays in the anoxic tank for 0.5 to 3h.
本实用新型的食品行业废水处理装置，其进一步的技术方案还可以是所述的接触氧化池的有效水深为3～5m，长宽比为1:2～1:1。In the food industry wastewater treatment device of the present invention, a further technical solution can also be that the effective water depth of the contact oxidation tank is 3 to 5 m, and the aspect ratio is 1:2 to 1:1.
本实用新型的食品行业废水处理装置，其进一步的技术方案还可以是所述的接触氧化池采用分段式设计，将活性污泥法与生物膜法相结合，达到优势集成的效果，分段设计接触氧化池在不同阶培养出高效微生物群体，净化效果得到加强；同时接触氧化池采用空气悬浮风机进行曝气，通过调节风机运行功率从而调节池内溶解氧含量。The further technical solution of the food industry wastewater treatment device of the utility model can also be that the contact oxidation tank adopts a segmented design, which combines the activated sludge method and the biofilm method to achieve the effect of integration of advantages, and the segmented design The contact oxidation tank cultivates high-efficiency microbial populations at different stages, and the purification effect is enhanced; at the same time, the contact oxidation tank uses an air suspension fan for aeration, and adjusts the operating power of the fan to adjust the dissolved oxygen content in the tank.
本实用新型的食品行业废水处理装置，其进一步的技术方案还可以是所述的二沉池表面负荷0.6～1.5m
3/m
2.h，并设置溢流堰出水。
The further technical solution of the food industry wastewater treatment device of the present invention can also be that the surface load of the secondary sedimentation tank is 0.6-1.5 m 3 /m 2 .h, and an overflow weir is provided for effluent.
本实用新型的食品行业废水处理装置，其进一步的技术方案还可以是所述的调节池中水的停留时间为6～12h。In the food industry wastewater treatment device of the present invention, a further technical solution can also be that the residence time of the water in the regulating tank is 6-12h.
本实用新型的食品行业废水处理装置，其接触氧化池停留时间根据进水水质及水量确定；加药间的加药装置为成套设备，含配套泵、搅拌、加药桶等附属设备；装置中使用的隔膜压滤机为成套设备，含配套泵、翻板、压榨水桶等附属设备。In the food industry wastewater treatment device of the utility model, the residence time of the contact oxidation tank is determined according to the water quality and water volume; the dosing device in the dosing room is a complete set of equipment, including auxiliary equipment such as matching pumps, stirring, and dosing barrels; in the device The diaphragm filter press used is a complete set of equipment, including auxiliary equipment such as matching pumps, flaps, and squeezing buckets.
本实用新型的有益效果如下：The beneficial effects of the utility model are as follows:
本实用新型的食品行业废水处理装置，解决了常规处理工艺水解不完全、抗冲击负荷能力低、运行不稳定及出水不达标等问题。改良ABR水解池配有混合搅拌装置，池内增加填料，充分水解水中复杂有机物。好氧池采用分段式设计，将活性污泥法与生物膜法相结合，达到优势集成的效果，分段设计接触氧化池在不同阶培养出高效微生物群体，净化效果得到加强。气浮设备采用成套设备，配备溶气系统及自控装置，根据溶气罐内压力变化自动实现溶气泵的启停。加药系统、空气悬浮风机、隔膜压滤机及电控柜集中于设备单元，便于统一检修管理。The food industry wastewater treatment device of the utility model solves the problems of incomplete hydrolysis of conventional treatment processes, low impact load resistance, unstable operation, and substandard effluent water. The improved ABR hydrolysis tank is equipped with a mixing and stirring device, and fillers are added in the tank to fully hydrolyze the complex organic matter in the water. The aerobic tank adopts a segmented design, which combines the activated sludge method and the biofilm method to achieve the effect of integration of advantages. The segmented design of the contact oxidation tank cultivates high-efficiency microbial populations at different stages, and the purification effect is enhanced. The air flotation equipment adopts a complete set of equipment, equipped with a dissolved gas system and automatic control device, which automatically realizes the start and stop of the dissolved gas pump according to the pressure change in the dissolved gas tank. The dosing system, air suspension fan, diaphragm filter press and electric control cabinet are centralized in the equipment unit, which is convenient for unified maintenance management.
图1为实用新型结构示意图；Figure 1 is a schematic diagram of the structure of the utility model;
图中:1、调节池，2、事故池，3、气浮机，4、水解池，5、生物选择池，6、缺氧池，7、接触氧化池，8、二沉池，9、污泥浓缩池，10、污泥回流井，11、鼓风机房(一楼)，12、加药间(二楼)，13、配电间(二楼)，14、储藏室(一楼)，15、压滤间。In the picture: 1. Regulating tank, 2. Accident tank, 3. Air flotation machine, 4. Hydrolysis tank, 5. Biological selection tank, 6. Anoxic tank, 7. Contact oxidation tank, 8. Secondary sedimentation tank, 9. Sludge thickening tank, 10, sludge return well, 11, blower room (first floor), 12, dosing room (second floor), 13, power distribution room (second floor), 14, storage room (first floor), 15. Filter press room.
本实用新型的食品行业废水处理装置，主体结构包括污水处理单元和设备综合单元，所述的污水处理单元主要包括调节池、水解池、生物选择池、缺氧池、接触氧化池和二沉池；所述设备综合单元主要包括气浮处理区、加药间、风机房和电控柜，其中气浮处理区的气浮设备为成套设备，配备溶气系统及自控装置，根据溶气罐内压力变化自动实现溶气泵的启停；所有单元、设备设施通过管线及辅助配件连接。所述的水解池为改良ABR水解池，配有混合搅拌装置，对进水起到均质作用，在出水区增加填料，降低水流速度，防止污泥流失，水在 改良ABR水解池停留时间为3～25h。所述的生物选择池配有混合搅拌装置，对进水起到均质作用，水在生物选择池停留时间为30-45min。所述的缺氧池配有混合搅拌装置，对进水起到均质作用，池内增加填料，降低水流速度，防止污泥流失，水在缺氧池停留时间为0.5～3h。所述的接触氧化池的有效水深为3～5m，长宽比为1:2～1:1。所述的接触氧化池采用分段式设计，将活性污泥法与生物膜法相结合，达到优势集成的效果，分段设计接触氧化池在不同阶培养出高效微生物群体，净化效果得到加强；同时接触氧化池采用空气悬浮风机进行曝气，通过调节风机运行功率从而调节池内溶解氧含量。所述的二沉池表面负荷0.6～1.5m3/m2.h，并设置溢流堰出水。所述的调节池中水的停留时间为6～12h。本实用新型的食品行业废水处理装置，其接触氧化池停留时间根据进水水质及水量确定；加药间的加药装置为成套设备，含配套泵、搅拌、加药桶等附属设备；装置中使用的隔膜压滤机为成套设备，含配套泵、翻板、压榨水桶等附属设备。The food industry wastewater treatment device of the utility model has a main structure including a wastewater treatment unit and an equipment integrated unit. The wastewater treatment unit mainly includes a regulating tank, a hydrolysis tank, a biological selection tank, an anoxic tank, a contact oxidation tank, and a secondary sedimentation tank. ; The equipment integrated unit mainly includes the air flotation treatment area, the dosing room, the fan room and the electric control cabinet. The air flotation equipment in the air flotation treatment area is a complete set of equipment, equipped with a dissolved gas system and automatic control device, according to the dissolved gas tank The pressure change automatically realizes the start and stop of the dissolved air pump; all units, equipment and facilities are connected through pipelines and auxiliary accessories. The hydrolysis tank is a modified ABR hydrolysis tank, equipped with a mixing and stirring device, which has a homogenizing effect on the incoming water, adds fillers in the water outlet area, reduces the water flow rate, and prevents sludge loss. The residence time of water in the modified ABR hydrolysis tank is 3～25h. The biological selection pool is equipped with a mixing and stirring device, which has a homogenizing effect on the inlet water, and the residence time of the water in the biological selection pool is 30-45 minutes. The anoxic tank is equipped with a mixing and stirring device to homogenize the incoming water. Fillers are added in the tank to reduce the water flow rate and prevent the loss of sludge. The water retention time in the anoxic tank is 0.5-3h. The effective water depth of the contact oxidation tank is 3 to 5 m, and the aspect ratio is 1:2 to 1:1. The contact oxidation tank adopts a segmented design, which combines the activated sludge method and the biofilm method to achieve the effect of integration of advantages. The segmented design of the contact oxidation tank cultivates high-efficiency microbial populations at different stages, and the purification effect is enhanced; at the same time; The contact oxidation tank uses an air suspension fan for aeration, and the dissolved oxygen content in the tank is adjusted by adjusting the operating power of the fan. The surface load of the secondary settling tank is 0.6-1.5m3/m2.h, and an overflow weir is provided for effluent. The residence time of the water in the regulating tank is 6-12h. In the food industry wastewater treatment device of the utility model, the residence time of the contact oxidation tank is determined according to the water quality and water volume; the dosing device in the dosing room is a complete set of equipment, including auxiliary equipment such as matching pumps, stirring, and dosing barrels; in the device The diaphragm filter press used is a complete set of equipment, including auxiliary equipment such as matching pumps, flaps, and squeezing buckets.
下面结合附图和实施例对本实用新型作进一步的说明，实施例中装置方案如下：如图所示，本实用食品废水治理工艺，其主体结构包括污水处理构筑物和设备综合楼，所述污水处理构筑物由1、调节池，2、事故池，4、水解池，5、生物选择池，6、缺氧池，7、接触氧化池，8、二沉池，9、污泥浓缩池，10、污泥回流井等构成；所述设备综合楼由3、气浮机，11、鼓风机房(一楼)，12、加药间(二楼)，13、配电间(二楼)，14、储藏室(一楼)，15、压滤间等构成。所述调节池停留时间6h，内部设置搅拌机对进水起到均质均量的作用。所述改良ABR水解池停留时间17.3h。所述改良ABR水解池配有混合搅拌装置，对进水起到均质作用，出水区增加填料，降低水流速度，同时防止污泥流失。所述生物选择池停留时间39min。所述生物选择池配有混合搅拌装置，对进水起到均质作用。所述缺氧池停留时间6h。所述缺氧池池配有混合搅拌装置，对进水起到均质作用，池内增加填料，降低水流速度，同时防止污泥流失。所述接触氧化池停留时间19.5h。所述接触氧化池采用三段式设计，将活性污泥法与生物膜法相结合，达到优势集成的效果，分段设计接触氧化池在不同阶培养出高效微生物群体，净化效果得到加强。所述接触氧化池采用空气悬浮风机进行曝气，通过调节风机运行功率从而调节池内溶解氧含量。所述二沉池表面负荷0.79m
3/m
2.h，设置溢流堰出水。所述气浮设备采用成套设备，配备溶气系统及自控装置，根据溶气罐内压力变化自动实现溶气泵的启停。所述加药装置为成套设备，含配套泵、搅拌、加药桶等附属设备；所述隔膜压滤机为成套设备，含配套泵、翻板、压榨水桶等附属设备；
The following is a further description of the utility model with reference to the drawings and embodiments. The device scheme in the embodiments is as follows: As shown in the figure, the main structure of the food wastewater treatment process of this utility model includes a sewage treatment structure and an equipment complex. The sewage treatment The structure consists of 1, regulating tank, 2, accident tank, 4, hydrolysis tank, 5, biological selection tank, 6, anoxic tank, 7, contact oxidation tank, 8, secondary settling tank, 9, sludge thickening tank, 10. Sludge return well, etc.; the equipment complex consists of 3, air flotation machine, 11, blower room (first floor), 12, dosing room (second floor), 13, power distribution room (second floor), 14, Storage room (first floor), 15, filter press room and other components. The retention time of the regulating tank is 6h, and a mixer is set inside to play a role in homogenizing the water inflow. The residence time of the modified ABR hydrolysis tank was 17.3h. The improved ABR hydrolysis tank is equipped with a mixing and stirring device, which has a homogenizing effect on the inlet water, adding fillers in the outlet area, reducing the water flow rate, and preventing the loss of sludge. The residence time of the biological selection pool was 39 minutes. The biological selection pool is equipped with a mixing and stirring device, which has a homogenizing effect on the inlet water. The residence time of the hypoxic pool was 6h. The anoxic tank is equipped with a mixing and stirring device, which has a homogenizing effect on the inflow. Fillers are added in the tank to reduce the water flow speed and prevent the loss of sludge. The residence time of the contact oxidation tank was 19.5h. The contact oxidation tank adopts a three-stage design, which combines the activated sludge method and the biofilm method to achieve the effect of integration of advantages. The segmented design of the contact oxidation tank cultivates high-efficiency microbial populations at different stages, and the purification effect is enhanced. The contact oxidation tank adopts an air suspension fan for aeration, and the dissolved oxygen content in the tank is adjusted by adjusting the operating power of the fan. The surface load of the secondary settling tank is 0.79m 3 /m 2 .h, and an overflow weir is set to discharge water. The air flotation equipment adopts a complete set of equipment, is equipped with a dissolved gas system and an automatic control device, and automatically realizes the start and stop of the dissolved gas pump according to the pressure change in the dissolved gas tank. The dosing device is a complete set of equipment, including supporting pumps, mixing, dosing barrels and other auxiliary equipment; the diaphragm filter press is a complete set of equipment, including supporting pumps, flaps, squeezing buckets and other auxiliary equipment;
本实施例应用时，进水COD在2800mg/L，氨氮95mg/L，总磷10mg/L，悬浮物1000mg/L，采用上述污水处理工艺，出水水质均达到园区污水接管标准，即：COD500mg/L，氨氮15mg/L，总磷5mg/L，悬浮物300mg/L。In the application of this embodiment, the influent COD is 2800mg/L, the ammonia nitrogen is 95mg/L, the total phosphorus is 10mg/L, and the suspended solids is 1000mg/L. Using the above-mentioned sewage treatment process, the effluent water quality meets the sewage management standard of the park, namely: COD500mg/ L, ammonia nitrogen 15mg/L, total phosphorus 5mg/L, suspended solids 300mg/L.
Claims (8)
- 一种食品行业废水处理装置，主体结构包括污水处理单元和设备综合单元，其特征在于所述的污水处理单元主要包括调节池、水解池、生物选择池、缺氧池、接触氧化池和二沉池；所述设备综合单元主要包括气浮处理区、加药间、风机房和电控柜，其中气浮处理区的气浮设备为成套设备，配备溶气系统及自控装置，根据溶气罐内压力变化自动实现溶气泵的启停；所有单元、设备设施通过管线及辅助配件连接。A wastewater treatment device for the food industry. The main structure includes a wastewater treatment unit and an equipment integrated unit. The wastewater treatment unit mainly includes a conditioning tank, a hydrolysis tank, a biological selection tank, an anoxic tank, a contact oxidation tank, and a secondary sedimentation tank. The equipment integrated unit mainly includes the air flotation treatment area, the dosing room, the fan room and the electric control cabinet. The air flotation equipment in the air flotation treatment area is a complete set of equipment, equipped with a dissolved gas system and automatic control device, according to the dissolved gas tank The internal pressure change automatically realizes the start and stop of the dissolved air pump; all units, equipment and facilities are connected through pipelines and auxiliary accessories.
- 根据权利要求1所述的食品行业废水处理装置，其特征在于所述的水解池为改良ABR水解池，配有混合搅拌装置，对进水起到均质作用，在出水区增加填料，降低水流速度，防止污泥流失，水在改良ABR水解池停留时间为3～25h。The food industry wastewater treatment device according to claim 1, characterized in that the hydrolysis tank is an improved ABR hydrolysis tank, equipped with a mixing and stirring device, which has a homogenizing effect on the inlet water, and adds fillers in the outlet area to reduce water flow. Speed, to prevent sludge loss, water retention time in the modified ABR hydrolysis tank is 3 ~ 25h.
- 根据权利要求1所述的食品行业废水处理装置，其特征在于所述的生物选择池配有混合搅拌装置，对进水起到均质作用，水在生物选择池停留时间为30-45min。The food industry wastewater treatment device according to claim 1, characterized in that the biological selection pool is equipped with a mixing and stirring device to homogenize the influent water, and the residence time of the water in the biological selection pool is 30-45 minutes.
- 根据权利要求1所述的食品行业废水处理装置，其特征在于所述的缺氧池配有混合搅拌装置，对进水起到均质作用，池内增加填料，降低水流速度，防止污泥流失，水在缺氧池停留时间为0.5～3h。The food industry wastewater treatment device according to claim 1, characterized in that the anoxic tank is equipped with a mixing and stirring device, which has a homogenizing effect on the incoming water, adds fillers in the tank, reduces the water flow speed, and prevents the loss of sludge. The residence time of water in the anoxic tank is 0.5～3h.
- 根据权利要求1所述的食品行业废水处理装置，其特征在于所述的接触氧化池的有效水深为3～5m，长宽比为1:2～1:1。The food industry wastewater treatment device according to claim 1, wherein the effective water depth of the contact oxidation tank is 3 to 5 m, and the aspect ratio is 1:2 to 1:1.
- 根据权利要求1所述的食品行业废水处理装置，其特征在于所述的接触氧化池采用分段式设计，将活性污泥法与生物膜法相结合，达到优势集成的效果，分段设计接触氧化池在不同阶培养出高效微生物群体，净化效果得到加强；同时接触氧化池采用空气悬浮风机进行曝气，通过调节风机运行功率从而调节池内溶解氧含量。The food industry wastewater treatment device according to claim 1, characterized in that the contact oxidation tank adopts a segmented design, which combines the activated sludge method and the biofilm method to achieve the effect of integration of advantages, and the segmented design of contact oxidation The pool cultivates high-efficiency microbial populations at different stages, and the purification effect is strengthened; at the same time, the contact oxidation pool uses air suspension fans for aeration, and adjusts the operating power of the fans to adjust the dissolved oxygen content in the pool.
- 根据权利要求1所述的食品行业废水处理装置，其特征在于所述的二沉池表面负荷0.6～1.5m 3/m 2.h，并设置溢流堰出水。 The food industry wastewater treatment device according to claim 1, characterized in that the surface load of the secondary settling tank is 0.6-1.5m 3 /m 2 .h, and an overflow weir is provided for effluent.
- 根据权利要求1所述的食品行业废水处理装置，其特征在于所述的调节池中水的停留时间为6～12h。The food industry wastewater treatment device according to claim 1, characterized in that the residence time of the water in the regulating tank is 6-12h.
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