CN205347130U - Handle high concentration organic waste water integrated device - Google Patents

Abstract

The utility model relates to an integrated device for treating high-concentration organic wastewater, comprising a PAC dosing device, a pressurized dissolved air tank, an air flotation tank, a membrane bioreactor, and a hollow fiber membrane module. The air tank is connected to the waste water inlet pipe, and the waste water inlet pipe is connected to the water inlet of the air flotation tank. The upper part of the air flotation tank is equipped with an oil scraper and a slag scraper and an oil collection channel. The right side of the clapboard 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 hollow fiber membrane module is arranged inside the membrane bioreactor, and the hollow fiber membrane module is connected with the membrane bioreactor. The outlet pipe and the output pump are connected. The utility model has the advantages of novel structure, low cost, small occupied area, and can effectively remove high-concentration organic matter.

Description

An integrated device for treating high-concentration organic wastewater

technical field

The utility model relates to the technical field of wastewater treatment, in particular to an integrated device for treating high-concentration organic wastewater.

Background technique

The existing high-concentration organic wastewater treatment equipment is difficult to effectively remove refractory organic matter such as starch and animal fat dissolved in water, so that the circulating water will turn black and smelly after a period of use, and the stable operation of the system cannot be guaranteed. In addition, the existing high-concentration organic wastewater treatment equipment has disadvantages such as easy blockage, large investment, high operating cost, and large floor space.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an integrated device for treating high-concentration organic wastewater with novel structure, advanced technology, effective removal of high-concentration organic matter, low cost and small footprint.

The utility model is realized by the following technical parties:

An integrated device for treating high-concentration organic wastewater, including a PAC dosing device, a pressurized dissolved air tank, an air flotation tank, an oil scraper and slag scraper, an oil collection channel, a partition group, a sludge discharge pipe, a membrane bioreactor, and an aeration tank. Air pipeline, blower, hollow fiber membrane module, outlet pipe, output pump, the PAC dosing device and pressurized air dissolving tank are installed on the upper left of the air flotation tank, and the PAC dosing device and pressurized air dissolving tank pass through the pipeline It is connected to the waste water inlet pipe, and the waste water inlet pipe is connected to the water inlet of the air flotation tank. The upper part of the air flotation tank is equipped with an oil scraper and slag scraper and an oil collection channel, and the bottom of the air flotation tank is provided with a mud discharge pipe. The air flotation tank There is a clapboard set inside, and the right side of the clapboard set is provided with an outlet of the air flotation tank, and the outlet of the air flotation tank is connected to the membrane bioreactor through a pipeline, and the bottom of the membrane bioreactor is provided with an outlet for excess sludge and an aeration pipe, the aeration pipe is connected with the blower arranged above the membrane bioreactor, the inside of the membrane bioreactor is provided with a hollow fiber membrane module, the hollow fiber membrane module is connected with the water outlet pipe, and the outlet pipe An output pump is installed on the water pipe.

A pressure transmitter and a backwashing device are also provided above the water outlet pipe, and the pressure transmitter and backwashing device are connected to the water outlet pipe through pipes, and a float level gauge is also provided in the membrane bioreactor.

Aiming at the water quality characteristics of high-concentration organic wastewater, the utility model adopts various methods of oil separation, demulsification, oil scraping, oil collection, activated sludge reaction, aeration, and membrane filtration. The air-water mixture in the tank is mixed into the air flotation tank to release tiny air bubbles, forming an air flotation body with a specific gravity smaller than that of water. At the same time, add PAC demulsifier to gather the remaining finely dispersed oil and small droplets of emulsified oil in the sewage into agglomerates, and scrape it to the oil collection channel through the oil scraper and slag scraper. The heavier solid particles settle at the bottom of the tank and are discharged through the sludge discharge pipe. Then, the sewage enters the biofilm reactor and fully contacts with the activated sludge. The organic matter in the sewage is degraded by microorganisms, while other impurities that cannot be degraded are separated by the membrane components in the system, so that the pollutants are completely decomposed, so the effluent The water quality is good and stable, and the effluent bacteria, suspended solids and turbidity are close to zero. The utility model is novel in structure, advanced in technology, low in cost, small in floor area, and can effectively remove high-concentration organic matter.

Description of drawings

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

In the attached drawings: 1—wastewater delivery pump, 2—air flotation tank, 3—membrane bioreactor, 4—inlet of air flotation tank, 5—outlet pipe, 6—backwashing device, 7—pressure transmitter, 8—waste water Water inlet pipe, 9—PAC dosing device, 10—pressurized dissolved air tank, 11—baffle group, 12—sludge discharge pipe, 13—oil scraper and slag scraper, 14—oil collection channel, 15—outlet of air flotation tank , 16—hollow fiber membrane module, 17—output pump, 18—blower, 19—aeration pipe, 20—float level gauge, 21—outlet of excess sludge.

detailed description

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

As shown in Figure 1, an integrated device for treating high-concentration organic wastewater includes a PAC dosing device, a pressurized dissolved air tank, an air flotation tank, an oil scraper and slag scraper, an oil collection channel, a partition set, a mud discharge pipe, Membrane bioreactor, aeration pipe, blower, hollow fiber membrane module, outlet pipe, output pump.

The high-concentration organic wastewater is transported to the air flotation tank through the wastewater delivery pump, the wastewater inlet pipe and the air flotation tank inlet. A PAC dosing device and a pressurized air dissolving tank are installed on the upper left of the air flotation tank, and the PAC dosing device and the pressurized dissolving tank are connected to the waste water inlet pipe through pipelines. The high-concentration organic wastewater is first mixed with the PAC demulsifier in the PAC dosing device, and then enters the air flotation tank together with the air-water mixture in the pressurized air-dissolving tank, and the wastewater is demulsified and air-floated in the air flotation tank.

The upper part of the air flotation tank is equipped with an oil scraper and slag scraper and an oil collection channel, and the bottom of the air flotation tank is equipped with a sludge discharge pipe. tube discharge. A separator group is arranged inside the air flotation tank, and a water outlet of the air flotation tank is arranged on the right side of the separator group, and the water outlet of the air flotation tank is connected to the membrane bioreactor through a pipeline. The sewage treated by air flotation, oil scraping and oil collection flows into the membrane bioreactor by itself from the outlet of the air flotation tank.

The bottom of the membrane bioreactor is provided with an outlet for excess sludge and an aeration pipe, and the aeration pipe is connected with a blower arranged above the membrane bioreactor. A hollow fiber membrane module is arranged inside the membrane bioreactor, and the hollow fiber membrane module is connected with an outlet pipe, and an output pump is installed on the outlet pipe. The air delivered by the blower to the membrane bioreactor system through the aeration pipe is also a very important part of the treatment process. It can promote the circulation of the fluid in the reactor, improve the degradation efficiency of activated sludge, and make the hollow fibers interact with each other. Scrub to clean membrane components. The membrane bioreactor combines membrane separation technology and biological treatment technology, and uses microfiltration membrane separation technology to replace the sedimentation tank and conventional filtration unit of the traditional activated sludge method, so that the activated sludge will not be lost with the effluent, and 8000-12000mg/ LUltra-high concentration of activated sludge decomposes pollutants thoroughly, so the effluent water quality is good and stable, effluent bacteria, suspended solids and turbidity are close to zero, and biological pollutants such as fecal coliform bacteria can be retained, and the effluent water quality is excellent ,Stablize.

As shown in Figure 1, a pressure transmitter and a backwashing device are also provided above the water outlet pipe, and the pressure transmitter and backwashing device are connected to the water outlet pipe through pipes. A pressure transmitter is installed in the outlet pipe to monitor the membrane flux. As the negative pressure rises, the membrane flux decreases, and the membrane module needs to be cleaned, and the backwashing device is activated. After backwashing, the membrane flux recovers better, with little damage to the membrane module and no secondary pollution. The membrane bioreactor is also equipped with a float level gauge to monitor the water level in the tank in real time.

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 (2)

1. one kind processes high concentrated organic wastewater integrated apparatus, it is characterised in that: it includes PAC chemicals dosing plant, pressure air-dissolving tank, flotation tank, Oil and slag scraping machine, oil-collecting canal, dividing plate group, discharge pipeline, membrane bioreactor, aerated conduit, aerator, hollow fiber film assembly, outlet pipe, rear pump, described PAC chemicals dosing plant and pressure air-dissolving tank are arranged on the upper left side of flotation tank, described PAC chemicals dosing plant is connected with wastewater inlet pipe by pipeline with pressure air-dissolving tank, described wastewater inlet pipe is connected with flotation tank water inlet, 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, dividing plate group it is provided with inside described flotation tank, the right side of described 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 is connected with outlet pipe, described outlet pipe is provided with rear pump.

2. a kind of process high concentrated organic wastewater integrated apparatus according to claim 1, it is characterized in that: described outlet pipe is also arranged above pressure transmitter and back purge system, described pressure transmitter is connected with outlet pipe by pipeline with back purge system, is additionally provided with floating ball lever meter in described membrane bioreactor.