CN219259720U

CN219259720U - Advanced hydrolysis treatment system for printing and dyeing wastewater

Info

Publication number: CN219259720U
Application number: CN202320034250.1U
Authority: CN
Inventors: 韩春江; 赵立功; 虞晓春; 孙晓璐; 王哲成; 薛晓亮; 寿楚阳; 胡殿国; 王振强; 杨伟杰; 樊时达; 徐樑; 林佳清; 花蓉; 石正兵
Original assignee: Wuxi Heyuan Environmental Design Co ltd
Current assignee: Wuxi Heyuan Environmental Design Co ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-06-27
Anticipated expiration: 2033-01-06

Abstract

The utility model discloses a printing and dyeing wastewater deep hydrolysis treatment system which comprises a tank body, wherein a water distribution system is arranged on the inner side of the tank body, a water outlet system is arranged on the inner side of the water distribution system, biological carrier filler is arranged below the water outlet system, a sampling system is arranged on the right side of the biological carrier filler, and a sludge discharge system is arranged at the bottom of the sampling system. The advanced hydrolysis treatment system for the printing and dyeing wastewater is characterized in that a water distribution system is calculated, a biological carrier filler is additionally arranged, an effluent weir is reasonably arranged, sludge and strains in the system can be effectively intercepted, an external sedimentation process is not needed, the quality of effluent water is effectively ensured, residual sludge in an aerobic system can be converted and decomposed after stable operation, and a back flushing system is arranged, so that the advanced hydrolysis treatment system has the function of preventing pipeline blockage, can reduce civil engineering and equipment investment, simplify a process chain, save operation and maintenance cost and reduce construction and operation difficulty.

Description

Advanced hydrolysis treatment system for printing and dyeing wastewater

Technical Field

The utility model belongs to the technical field of printing and dyeing wastewater treatment, and particularly relates to a printing and dyeing wastewater deep hydrolysis treatment system.

Background

Waste water discharged from dyeing and finishing of cotton, hemp, chemical fiber and their blended products, silk as main material, wool fabric, etc. The fiber types and the processing technology are different, and the water quantity and the water quality of the printing and dyeing wastewater are also different. Wherein the waste water of the printing and dyeing factory is large, and the water consumption of the textile is 100-200 t for each 1t of printing and dyeing processing, wherein 80% -90% of the waste water is discharged. The printing and dyeing wastewater has the characteristics of large water quantity, high organic pollutant content, large alkalinity, large water quality change and the like, belongs to one of industrial wastewater which is difficult to treat, and contains dye, slurry, auxiliary agent, oiling agent, acid and alkali, fiber impurities, sand substances, inorganic salt and the like.

The discharge amount of the printing and dyeing wastewater is large, and the printing and dyeing wastewater contains unreacted dye and pigment (paint), has a heavy color, and also contains unreacted auxiliary agents, and products after the reaction and falling objects on fabrics. More serious are carcinogenic and teratogenic organic compounds, toxic heavy metals, and the like.

The combination, properties, etc. of various components in wastewater vary irregularly with market changes, season changes, supply changes, etc. The printing and dyeing wastewater belongs to one of industrial wastewater which is difficult to treat. Most of the adopted bio-physical treatment methods can only meet the basic emission requirements due to technical, economic and other reasons. Although the chromaticity is slightly reduced, the organic substances are only decomposed into smaller substances, and the properties of the decomposed products are difficult to control and difficult to master, so that the environment cannot be protected.

In the printing and dyeing wastewater treatment process, the situation of adopting a hydrolysis process is more, but in the actual use process, the COD removal rate of the actual operation of a plurality of hydrolysis processes is only 10-15% or even lower, so that the hydrolysis effect is considered to be the same, and the main effect of the hydrolysis is to improve the biochemical performance of sewage, so that the subsequent aerobic process is better operated. This way, the burden of the subsequent aerobic process is increased, which increases the investment cost and the materialization cost before hydrolysis. It is estimated that the treatment cost is basically equivalent to the city tap water price when the wastewater reaches the secondary discharge standard after treatment. If the wastewater recycling requirement is met, the treatment cost is higher, so that the actual operation is quite difficult. Therefore, a deep hydrolysis treatment system for printing and dyeing wastewater is needed.

Disclosure of Invention

The utility model aims to provide a printing and dyeing wastewater advanced hydrolysis treatment system, which aims to solve the problems of poor biochemical performance of printing and dyeing wastewater, excessive quality of effluent water of a conventional biochemical process and the like.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a deep hydrolysis treatment system for printing and dyeing wastewater comprises

The water distribution system is arranged at the inner side of the tank body, the water outlet system is arranged at the inner side of the water distribution system, the biological carrier filler is arranged below the water outlet system, the sampling system is arranged at the right side of the biological carrier filler, and the sludge discharge system is arranged at the bottom of the sampling system.

Preferably, the water distribution system consists of a water distribution pipeline, and the water distribution pipeline is connected with the outside of the tank body by a pulse water distributor or a water pump.

Preferably, water outlets are uniformly arranged on the water distribution pipeline of the water distribution system, and the water outlets face downwards.

Preferably, the sampling system is provided with 4 sampling ports with different heights, and the interval between the sampling ports is 1m.

Preferably, the biological carrier filler is arranged on the water distribution pipeline.

The utility model has the technical effects and advantages that: the advanced hydrolysis treatment system for printing and dyeing wastewater improves the COD removal rate of the hydrolysis section, improves the B/C ratio of hydrolysis effluent, improves the decoloration removal rate, reduces the sludge yield, reduces the investment and the running cost, and ensures stable and reliable system running.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

In the figure: 1-a tank body, 2-a water distribution system, 3-a water outlet system, 4-a biological carrier filler, 5-a sampling system and 6-a sludge discharge system.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a printing and dyeing wastewater advanced hydrolysis treatment system shown in figure 1, which comprises

The water distribution system 2 is arranged on the inner side of the tank body 1, the water outlet system 3 is arranged on the inner side of the water distribution system 2, the biological carrier filler 4 is arranged below the water outlet system 3, the sampling system 5 is arranged on the right side of the biological carrier filler 4, and the sludge discharge system 6 is arranged at the bottom of the sampling system 5.

Specifically, the water distribution system 2 is composed of a water distribution pipeline, and the water distribution pipeline is connected with the outside of the tank body 1 by a pulse water distributor or a water pump.

Specifically, water outlets are uniformly arranged on the water distribution pipeline of the water distribution system 2, and the water outlets face downwards.

Specifically, the sampling system 5 is provided with 4 sampling ports with different heights, and the interval between the sampling ports is 1m.

Specifically, the biological carrier filler 4 is arranged on the water distribution pipeline.

Working principle: in the use process of the printing and dyeing wastewater advanced hydrolysis treatment system, wastewater is required to have interception measures before entering the system, the bottom of the tank body 1 is full of a water distribution system 2, the water distribution system 2 consists of water distribution pipelines, the water distribution pipelines and the outside of the tank are connected by pulse water distributors or water pumps, the water distribution pipelines are uniformly provided with water outlet systems 3, the water outlet faces downwards, the water outlet is smooth and burr-free, the water outlet is not smaller than 32mm in diameter, the single-hole service area is not larger than 1.5m2, and the arrangement area of the single water distribution system 2 is not larger than 250m when the single-hole service area is combined with the pulse water distributors ² And a reverse air flushing system is arranged; when combined with a water pump, the arrangement area of the single water distribution system 2 is not more than 100m ² And a reverse air flushing system is arranged; such a treatment effect is good. The biological carrier filler 4 is arranged on the water distribution pipeline, and the filler height should not be less than 2m or the filler volume should not be less than 30% of the tank capacity. The mud discharging system 6 is arranged at the bottom of the water tank, the middle part of the water tank and the middle and upper parts of the water tank. The weir load of the effluent weir system should be less than 1.0L/s.m. The sampling system 5 is provided with at least 4 sampling ports with different heights, and the spacing between the sampling ports is controlled between 1 and 2 m. The tank body is internally provided with high-efficiency biological strains, one part of the strains are attached to the biological carrier filler 4, the other part of the strains are suspended in the tank body, and the adding amount of the sludge strains is 8-30g/L.

Sewage enters the bottom water distribution system 2 through a water pump or a pulse water distributor, the bottom of the water tank is stirred through a water outlet of the water distribution system, when the sewage rises, the sewage is combined with sludge strains in the tank, and when the sewage rises, organic matters are further decomposed through the strains in different sludge layers. By controlling the rising flow rate, the sludge concentration, the quantity of biological carrier fillers and the distribution of water outlet weirs, the sludge strains are effectively throttled, and the supernatant fluid flows into the next stage of process after the sewage is hydrolyzed.

In the advanced hydrolysis (DH hydrolysis) treatment process treatment system, a biological carrier filler 4 is arranged in a water tank, and a layer of biological film is attached to the surface of the filler. The sewage passes through the bottom pipeline water distribution system 2, so that the sewage is fully contacted with the strains in the water tank through the water distribution pipeline, the strains are distributed in the water tank, and a biological phase gradient is formed at different heights in the water tank. A plurality of sampling devices are arranged in the pool, so that the microbial condition and the sludge concentration in the pool can be conveniently observed. A plurality of sludge discharging measures with different heights are arranged in the pond, and the concentration and the biological activity of the sludge in the pond are controlled. The upper part of the water tank is provided with a plurality of water outlet tanks, so that the uniformity and stability of water outlet are ensured. The water distribution system 2 can be matched with a pulse water distributor and a water pump for use.

By calculating the water distribution system 1, adding the biological carrier filler and reasonably arranging the water outlet weir, sludge and strains in the system can be effectively intercepted, an external sedimentation process is not needed, and the water quality of the discharged water is effectively ensured. After stable operation, the residual sludge of the decomposed aerobic system can be converted.

The system is provided with a back flushing system and has the function of preventing pipeline blockage. The system has the removal rate stabilized at 30% or above, and the decoloring removal rate of the system is improved by 40% or above. The B/C of the effluent can be improved by more than 30 percent, and compared with the surplus sludge of the convertible degradation aerobic process, the system sludge yield can be reduced by 60 percent or more. Can reduce the dosage of the process medicament in the hydrolysis pre-materialization stage or cancel the front-end materialization. Can be flexibly connected with pulse water distribution and water pump water distribution. Compared with other processes, the method can reduce civil engineering and equipment investment, simplify a process chain, save operation and maintenance cost and reduce construction and operation difficulty.

Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, it will be apparent to those skilled in the art that the foregoing description of the preferred embodiments of the present utility model can be modified or equivalents can be substituted for some of the features thereof, and any modification, equivalent substitution, improvement or the like that is within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims

1. A printing and dyeing wastewater advanced hydrolysis treatment system is characterized in that: comprising

The novel sewage treatment device comprises a tank body (1), wherein a water distribution system (2) is arranged on the inner side of the tank body (1), a water outlet system (3) is arranged on the inner side of the water distribution system (2), a biological carrier filler (4) is arranged below the water outlet system (3), a sampling system (5) is arranged on the right side of the biological carrier filler (4), and a sludge discharge system (6) is arranged at the bottom of the sampling system (5).

2. The advanced hydrolysis treatment system for printing and dyeing wastewater according to claim 1, wherein: the water distribution system (2) consists of a water distribution pipeline, and the water distribution pipeline is connected with the outside of the tank body (1) by a pulse water distributor or a water pump.

3. The advanced hydrolysis treatment system for printing and dyeing wastewater according to claim 1, wherein: the water distribution pipeline of the water distribution system (2) is uniformly provided with water outlets which face downwards.

4. The advanced hydrolysis treatment system for printing and dyeing wastewater according to claim 1, wherein: the sampling system (5) is provided with 4 sampling ports with different heights, and the interval between the sampling ports is 1m.

5. The advanced hydrolysis treatment system for printing and dyeing wastewater according to claim 1, wherein: the biological carrier filler (4) is arranged on the water distribution pipeline.