CN205347131U - Food and beverage treatment of water regeneration system that gives up - Google Patents

Abstract

The utility model relates to a food and beverage treatment of water regeneration system that gives up, including oil removal equalizing basin, air supporting pond, membrane bioreactor and ultraviolet disinfection pond, be equipped with a partition plate group, the 2nd partition plate group, equalizing basin delivery port in the oil removal equalizing basin, the equalizing basin delivery port passes through pipeline, elevator pump and links to each other with the air supporting pond, the upper portion in air supporting pond is equipped with oil and slag scraping machine and ji youqu, and the bottom in air supporting pond is equipped with the mud pipe, the air supporting pond is passed through the pipeline and is linked to each other with membrane bioreactor, be equipped with aerated conduit and hollow fiber membrane subassembly in the membrane bioreactor, the hollow fiber membrane subassembly links to each other with the ultraviolet disinfection pond through filtering outlet pipe, rear pump. The utility model discloses novel structure, technology is advanced, efficient, oily waste treatment is thorough.

Description

A treatment and recycling system for catering wastewater

technical field

The utility model relates to the technical field of catering wastewater treatment, in particular to a treatment and recycling system for catering wastewater.

Background technique

With the continuous acceleration of the urbanization process, the scale and number of hotels, hotels, and canteens are increasing day by day, and the resulting amount of catering wastewater is also increasing. According to incomplete statistics, the untreated waste water discharged by the catering industry in my country every year The amount of waste water reaches hundreds of millions of tons, and there is a growing trend. According to other reports, the discharge of catering wastewater accounts for about 3% of urban domestic sewage discharge, but the content of BOD ₅ and COD _cr accounts for 1/3 of the total load. It can be seen that catering wastewater is a high-concentration pollution source and is the source of pollution around the city. One of the main causes of water pollution. On the other hand, as a "water-poor country", my country's water resource crisis is becoming more and more serious, and there is a serious uneven distribution of water resources, which leads to water shortages in many cities, which not only limits the development of urban economy, but also affects the living standards of residents. had a great impact. Therefore, the treatment and recycling of catering wastewater can not only achieve significant environmental benefits, but also have significant economic and social benefits.

The composition of catering wastewater is complex, with high organic content. The main components are starch, dietary fiber, animal fat and other organic substances. At present, treatment processes such as "coarse granulation method", "biological contact oxidation method" and "electrochemical method" are widely used in China, and there is also a "rigid flat membrane biological treatment process", but the following problems still exist:

Treatment equipment using the "coarse granulation method" and "electrochemical method" as the main body can only remove some suspended and insoluble mud and sand, but cannot remove refractory organic matter such as starch and animal fat dissolved in water. After a period of use, the water quality will turn black and become smelly, and the stable operation of the system cannot be guaranteed.

The use of "biological contact oxidation" treatment equipment is prone to plugging of fillers, uneven water distribution and aeration, and local dead ends. The setting of fillers makes the structure of the oxidation tank complicated, which is not conducive to equipment installation and maintenance, and improper selection of fillers will seriously affect the treatment efficiency.

There are the following problems in the treatment equipment that adopts "rigid flat membrane biological treatment" as the main body:

(1) Pretreatment has high requirements on equipment materials, high temperature resistance, high pressure resistance, and corrosion resistance, so the cost of equipment is high, and the one-time investment of the system is high;

(2) During the oxidation process, highly toxic intermediate products may be produced, which is not conducive to the subsequent biochemical treatment;

(3) The rigid flat-panel membrane bioreactor has a small filling density and occupies a large area; the flat-panel membrane is easy to break, and the entire membrane must be replaced after the flat-panel membrane is damaged. Large-scale lifting equipment must be erected to lift out the module when taking it out for maintenance. , Difficult to operate.

(4) Reclaimed water cannot meet the requirements in the toilet flushing project of "Urban Sewage Recycling and Utilization of Urban Miscellaneous Water Quality" (GB/T18920-2002): chromaticity (≤30), turbidity (≤5), total residual chlorine (contact for 30 minutes ≥1.0mg/L at the end of the pipe network, ≥0.2mg/L at the end of the pipe network), total coliforms (≤3/L) index requirements.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a catering wastewater treatment and recycling system with novel structure, advanced technology, high efficiency and thorough oil pollution treatment.

The utility model is realized by the following technical parties:

A treatment and recycling system for catering wastewater, comprising an oil separation adjustment tank, an air flotation tank, a membrane bioreactor and an ultraviolet disinfection tank, the oil separation adjustment tank is provided with a first partition group and a second partition group, the The right side of the second clapboard group is provided with an outlet of the adjustment pool, which is connected to the water inlet of the air flotation pool through a pipeline and a lift pump, and a PAC dosing device and a pressurized air tank are provided on the outside of the air flotation pool , the PAC dosing device and the pressurized dissolved air tank are also connected to the water inlet of the air flotation tank through pipelines. tube, the inside of the air flotation tank is provided with a third partition group, the right side of the third partition group is provided with an air flotation tank water outlet, and the air flotation tank water outlet is connected to the membrane bioreactor through a pipeline, and the membrane The bottom of the bioreactor is provided with a residual sludge outlet and an aeration pipe, and the aeration pipe is connected with a blower arranged above the membrane bioreactor, and a hollow fiber membrane module is arranged inside the membrane bioreactor, and the hollow fiber The membrane module is connected to the ultraviolet disinfection tank through the filter outlet pipe and the output pump. The filter outlet pipe is also provided with a pressure transmitter and a backwashing device. The ultraviolet disinfection tank is equipped with an ultraviolet disinfection module. The control box above the ultraviolet disinfection pool is connected to each other, and the lower right part of the ultraviolet disinfection pool is provided with a reuse water outlet.

Further, the membrane bioreactor is also provided with a float level gauge.

Further, the ultraviolet disinfection pool is also provided with a plug-in gate, a water level control gate and a water level sensor.

The utility model relates to a treatment and recycling system for catering wastewater. Aiming at the water quality characteristics of catering wastewater and the requirements for reclaimed water reuse, an oil separation adjustment tank, an air flotation tank, a biofilm reactor (with a hollow fiber membrane module inside) and an ultraviolet Combined disinfection treatment, oil separation, demulsification, oil scraping, oil collection, membrane filtration, disinfection of sewage, and reuse as water for flushing toilets, road cleaning, and firefighting to realize the recycling of water resources. The utility model has the advantages of novel structure, advanced technology, high efficiency and thorough treatment of oil pollution.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the attached drawings: 1—Oil separation adjustment tank, 2—Air flotation tank, 3—Membrane bioreactor, 4—Ultraviolet disinfection tank, 5—First partition group, 6—Second partition group, 7—Outlet of regulation tank Nozzle, 8—lift pump, 9—PAC dosing device, 10—pressurized dissolved air tank, 11—third clapboard group, 12—sludge discharge pipe, 13—oil scraper and slag scraper, 14—oil collection channel, 15—water outlet of air flotation tank, 16—hollow fiber membrane module, 17—output pump, 18—blower, 19—aeration pipe, 20—float level gauge, 21—pressure transmitter, 22—backwashing device, 23—remaining sludge outlet, 24—slide gate, 25—water level control gate, 26—water level sensor, 27—ultraviolet disinfection module, 28—control box, 29—filter outlet pipe, 30—reuse water outlet.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in FIG. 1 , a treatment and recycling system for catering wastewater includes an oil separation adjustment tank 1 , an air flotation tank 2 , a membrane bioreactor 3 and an ultraviolet disinfection tank 4 .

The oil-separating adjustment tank 1 is provided with a first separator group 5 and a second separator group 6, and the right side of the second separator group 6 is provided with an outlet 7 of the adjustment tank, and the outlet 7 of the adjustment tank passes through a pipeline, The lift pump 8 is connected to the water inlet of the air flotation tank 2 .

The outside of the air flotation tank 2 is provided with a PAC dosing device 9 and a pressurized air dissolving tank 10, and the PAC dosing device 9 and the pressurized air dissolving tank 10 are also connected to the water inlet of the air flotation tank 2 through pipelines. The upper part of the air flotation tank 2 is equipped with an oil scraper 13 and an oil collection channel 14 , the sewage is demulsified and air flotation in the air flotation tank 2 , and the generated scum is collected by the oil scraper 13 to the oil collection channel 14 . The inside of the air flotation tank 2 is provided with a third partition group 11, and the bottom of the air flotation tank 2 is provided with a sludge discharge pipe 12, and the settled sludge is discharged from the sludge discharge pipe 12. The right side of the third partition group 11 is provided with an air flotation tank water outlet 15, and the air flotation tank water outlet 15 is connected with the membrane bioreactor 3 through a pipeline.

The bottom of the membrane bioreactor 3 is provided with an excess sludge outlet 23 and an aeration pipe 19 , and the aeration pipe 19 is connected with a blower 18 arranged above the membrane bioreactor 3 . A hollow fiber membrane module 16 and a float level gauge 20 are arranged inside the membrane bioreactor 3 , and the hollow fiber membrane module 16 is connected to the ultraviolet disinfection tank 4 through a filter outlet pipe 29 and an output pump 17 . The filtered water pipe 29 is also provided with a pressure transmitter 21 and a backwashing device 22 .

An ultraviolet disinfection module 27 is arranged in the ultraviolet disinfection pool 4 , and the ultraviolet disinfection module 27 is connected to a control box 28 arranged above the ultraviolet disinfection pool 4 . In the ultraviolet disinfection pool 4, there is also a plate gate 24, a water level control gate 25 and a water level sensor 26, and the lower right part of the ultraviolet disinfection pool 4 is provided with a reuse water outlet 30.

The working principle of the utility model is as follows:

Catering wastewater is collected uniformly through the drainage ditch and flows into the oil separation adjustment tank 1 by itself, and passes through the first partition group 5 and the second partition group 6 to remove slick oil and scum in the water. The sewage after the oil separation adjustment treatment flows out from the water outlet 7 of the adjustment tank, first mixes with the PAC demulsifier in the PAC dosing device 9 through the lift pump 8, and then enters with the air-water mixture in the pressurized air-dissolving tank 10 In the air flotation tank 2, the sewage is demulsified and air flotation in the air flotation tank 2, and the generated scum is collected by the oil scraper 13 to the oil collection channel 14, and the settled sludge is discharged from the sludge discharge pipe 12. The sewage treated by air flotation, oil scraping and oil collection flows into the membrane bioreactor 3 through the water outlet 15 of the air flotation tank. The ultraviolet disinfection tank 4, the aeration system composed of the blower 18 and the aeration pipeline 19 provides oxygen for the biochemical reaction and plays a stirring role at the same time. The float level gauge 20 and the pressure transmitter 21 monitor the operating data of the reactor. When the detected membrane flux is too low, the output pump 17 is shut down, and the backwashing device 22 is turned on for backwashing to restore the membrane flux. The excess sludge is discharged through the excess sludge outlet 23 . The treated water enters the disinfection tank, flows through the ultraviolet disinfection module 27 for one-time disinfection and sterilization, and then reuses the effluent. A water level sensor 26 monitors the water level in the pond, and is controlled by a slide gate 24 and a water level control gate 25 .

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the structure and principles of the present utility model should be considered within the protection scope of the present utility model.

Claims (3)

1. the process regeneration application system of a food and drink waste water, it is characterized in that: it includes oil removal regulating reservoir, flotation tank, membrane bioreactor and ultraviolet disinfection pond, the first dividing plate group it is provided with in described oil removal regulating reservoir, second partition group, it is provided with regulating reservoir outlet on the right side of described second partition group, described regulating reservoir outlet passes through pipeline, elevator pump is connected with flotation tank water inlet, the outside of described flotation tank is provided with PAC chemicals dosing plant and pressure air-dissolving tank, described PAC chemicals dosing plant is also connected with flotation tank water inlet each through pipeline with pressure air-dissolving tank, the top of described flotation tank is provided with Oil and slag scraping machine and oil-collecting canal, the bottom of flotation tank is provided with discharge pipeline, the 3rd dividing plate group it is provided with inside described flotation tank, the right side of described 3rd dividing plate group is provided with flotation tank outlet, described flotation tank outlet is connected with membrane bioreactor by pipeline, excess sludge outlet and aerated conduit it is provided with bottom described membrane bioreactor, described aerated conduit is connected with the aerator being arranged on above membrane bioreactor, it is provided with hollow fiber film assembly inside described membrane bioreactor, described hollow fiber film assembly filters out water pipe, rear pump is connected with ultraviolet disinfection pond, described filtering out is additionally provided with pressure transmitter and back purge system on water pipe, it is provided with ultraviolet disinfection module in described ultraviolet disinfection pond, described ultraviolet disinfection module is connected with the control chamber being located at above ultraviolet disinfection pond, described ultraviolet disinfection pond right lower quadrant is provided with reuse outlet.

2. the process regeneration application system of a kind of food and drink waste water according to claim 1, it is characterised in that: it is additionally provided with floating ball lever meter in described membrane bioreactor.

3. the process regeneration application system of a kind of food and drink waste water according to claim 1, it is characterised in that: it is additionally provided with plug board gate, water lev el control gate and level sensor in described ultraviolet disinfection pond.