CN105967348A - In-situ treatment method and device of odor volatilized from surface of sewage - Google Patents

Abstract

The invention relates to an in-situ treatment method and device of odor volatilized from the surface of sewage. The device comprises a filler layer, a floating layer and a spraying system. The filler layer is of a light porous structure and made of polyurethane or polystyrene. The filler layer covers the whole surface of the sewage, and the odor volatilized from the surface of the sewage is treated by microorganisms growing on the filler layer in an attached manner and then discharged into the atmosphere. The spraying system comprises a water pump, a pipeline and a sprayer and used for supplying water and inorganic salt. The floating layer is made of light and high-buoyance materials and can guarantee that the filler layer floats on the surface of the sewage. The in-situ treatment method and device has the advantages that the method is simple in process, the device is light and convenient, odor collecting and a fan are not needed, and the in-situ treatment method and device is applicable to odor treatment of treatment structures such as a sewage storage tank, an inspection well, a lifting pump station, a sewage plant regulating tank, an aerated grit chamber and a sludge thickening tank.

Description

An in-situ treatment method and device for volatile odor on the surface of sewage

technical field

The invention belongs to the technical field of treatment of volatile odor of sewage, and in particular relates to an in-situ treatment method and device for volatile odor of sewage surface.

Background technique

There are many sewage treatment plants in our country. With the development of cities, some sewage treatment plants are surrounded by residential areas. With the improvement of living standards of residents, more and more attention has been paid to environmental pollution. Environmental pollution problems caused by the odor emitted by sewage treatment plants and related facilities have occurred frequently, which has affected the daily life of residents.

In order to control the odor of sewage treatment plants, my country promulgated the "Discharge Standards of Odor Pollutants" (GB 14554-93) and "Discharge Standards of Pollutants for Urban Sewage Plants" (GB 18918-2002), which proposed some pollutants The maximum concentration limit at the boundary of the sewage treatment plant.

At present, the odor treatment methods of sewage treatment plants include three categories: physical method, chemical method and biological method. Physical methods include adsorption method and plant liquid spraying, etc., which are generally used as emergency treatment; chemical method has complicated process equipment and high operating costs. It may also produce secondary pollutants, and its current application is gradually decreasing; biological method is currently the main method for odor treatment in sewage treatment plants. Its advantages lie in convenient operation and management, no secondary pollution, and it is an advanced deodorization technology.

The general treatment process of the existing sewage treatment plant odor biological treatment method is to first collect the odor produced by the sewage treatment structure, and then pass the odor into the biological treatment device under the action of a fan to treat it and discharge it after reaching the standard. This treatment method has the following disadvantages: (1) it needs a special odor collection device and an odor treatment device, which occupies a large area; The investment of the gas treatment device is large, and the operating cost is relatively high; (3) The odor humidity is high, which is easy to cause corrosion to the collection device

Contents of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a method and device for in-situ treatment of volatile odor on the surface of sewage, using biological methods to treat odor, and the entire device can be directly constructed on the sewage treatment structure without collecting The system does not need fans, greatly reduces investment and operating costs, and overcomes the defects of existing biological treatment methods.

In order to achieve the above object, the technical scheme adopted in the present invention is:

An in-situ treatment method for volatilized odor on the surface of sewage, comprising:

Float the filler for the growth of microorganisms to treat the odor on the surface of the sewage to be treated;

Water and nutrients for the growth of the microorganisms are sprayed from top to bottom to the filler.

The filler has a lightweight porous structure, the particle size or pore size of the filler particles is 0.5-5mm, and the material is polyurethane or polystyrene.

The filler covers the entire water surface of the sewage to be treated.

The filler floats on the water surface of the sewage to be treated through the buoyancy material.

The nutrient substance for spraying is activated sludge, which is sprayed once every 20-30 minutes, and continuously sprayed for 2-5 minutes each time.

The present invention also provides an in-situ treatment device for volatile odor on the surface of sewage, comprising:

The floating layer 2 floats on the water surface of the sewage to be treated;

The filler layer 1 is attached to the floating layer 2 for the growth of microorganisms to treat odor; the floating layer 2 is made of high buoyancy material, which can ensure that the filler layer floats on the water surface.

The spray system 4 sprays water and nutrients for the growth of the microorganisms to the packing layer 1 from top to bottom.

The odor first passes through the packing layer 1 in the process of escaping into the atmosphere. The microorganisms in the packing layer 1 treat the odor in situ, and the spray system 4 provides water and nutrients necessary for the growth of the microorganisms.

The filler layer 1 is a lightweight porous structure, the particle size or pore size of the filler particles is 0.5-5 mm, and the material is polyurethane or polystyrene.

The packing layer 1 covers the entire sewage treatment structure that generates odor, and the packing layer 1 is provided with airtight holes to observe the sewage treatment structure. The observation port is usually covered by the packing that is separated from the whole block of packing, and the corresponding packing block can be removed when necessary Make observations.

The packing layer 1 floats on the water surface of the sewage treatment structure, and the height is between 10-50cm.

The spraying system 4 includes a spraying head, a water pump and pipelines, and the spraying water is the effluent of the sewage treatment plant. The number of sprinklers depends on the spraying area, and the economy is considered while ensuring the coverage of the entire packing layer.

This device is suitable for in-situ odor treatment of sewage storage tanks, inspection wells, lifting pump stations, sewage plant regulating tanks, aerated grit chambers, sludge thickening tanks and other treatment structures or facilities.

The supporting process of this device is as follows:

A) combining the floating layer 2 and the packing layer 1, placing them on the water surface of the structure 3 to float;

B) Construction of sprinkler system 4: sprinkler heads are placed equidistantly around the structure, and the sprinkler area covers the entire packing layer 1 as much as possible;

C) Inoculation: continuously spray the microbial bacterial solution to the filler layer 1 for 30 minutes;

D) Operation of the odor treatment device: after inoculation, the microorganisms in the packing layer 1 can treat the odor after several days of domestication, and the spray system 4 regularly sprays water and nutrient solution to ensure the growth of microorganisms.

Compared with the prior art, the device and method of the present invention are used for sewage storage, transportation and in-situ treatment of odor in treatment facilities. The filler layer covers the entire sewage surface, and the odor volatilized on the sewage surface is treated by the microorganisms attached to the filler layer. Then it is discharged into the atmosphere, and the spray system is used for water supply and inorganic salts. The floating layer is made of light, high buoyancy material, which can ensure that the packing layer floats on the water. The invention has simple process, portable device, no need for odor collection, no fan, and can be applied to sewage storage tanks, inspection wells, lifting pump stations, sewage plant adjustment tanks, aerated grit chambers, sludge concentration tanks and other treatment structures. gas treatment.

Description of drawings

Fig. 1 is a schematic diagram (side view) of the structure of the present invention.

Fig. 2 is a structural schematic view (top view) of the present invention.

detailed description

The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

As shown in Figure 1 and Figure 2, according to the area of the structure 3, the filler layer 1 of the same area is selected, which can be a whole piece or several pieces spliced together. The height of the filler layer 1 is 10-50cm, and the filler particle size or The hole size is 0.5-5mm, and the material is polyurethane or polystyrene.

Combine the floating layer 2 and the packing layer 1 together and make them float on the water.

Place the sprinkler system 4 around the structure 3, and the sprinkler area should cover the entire packing layer as much as possible.

Continuously spray the microbial bacterial solution to the packing layer 1 through the spray system 4 for 30 minutes for inoculation.

After the inoculation, the microorganisms in the filler layer 1 can deal with the odor after several days of domestication, and the spray system 4 sprays water every 20-30 minutes to ensure the moisture required for the growth of microorganisms.

If it is necessary to monitor the water quality of the structure, an observation port 5 can be set on the filler layer. The observation port 5 is usually covered by the filler, and the filler can be removed for observation when observation is required.

Claims (10)

1. A method for in-situ treatment of volatilized odor on the surface of sewage, characterized in that: Float the filler for the growth of microorganisms to treat the odor on the surface of the sewage to be treated; Water and nutrients for the growth of the microorganisms are sprayed from top to bottom to the filler. 2. The in-situ treatment method for volatile odor on the surface of sewage according to claim 1, wherein the filler is a lightweight porous structure, the particle size or pore size of the filler particles is 0.5-5mm, and the material is polyurethane or polystyrene vinyl. 3. The in-situ treatment method for volatile odor on the surface of sewage according to claim 1, wherein the filler covers the entire water surface of the sewage to be treated. 4. The in-situ treatment method for volatile odor on the surface of sewage according to claim 1, wherein the filler floats on the water surface of the sewage to be treated through a buoyancy material. 5. according to the in-situ treatment method of the volatile odor of the sewage surface according to claim 1, it is characterized in that, the nutrient substance of described spraying is activated sludge, spray once every 20-30 minutes, each continuous spraying 2 -5 minutes. 6. An in-situ treatment device for volatile odor on the surface of sewage, characterized in that it comprises: The floating layer (2) floats on the water surface of the sewage to be treated; The filler layer (1) is attached to the floating layer (2) for the attachment and growth of microorganisms to treat odor; The spray system (4) sprays water and nutrients for the growth of the microorganisms to the packing layer (1) from top to bottom. 7. The in-situ treatment device for volatilizing odor on the surface of sewage according to claim 6, characterized in that, the filler layer (1) is a lightweight porous structure, the particle size or pore size of the filler particles is 0.5-5mm, and the material is polyurethane or polystyrene. 8. according to the in-situ treatment device of the described sewage surface volatile odor of claim 6, it is characterized in that, described packing layer (1) covers the whole sewage treatment structure that produces foul smell, airtight hole is set on packing layer (1) to Observe sewage treatment structures. 9. The in-situ treatment device for volatile odor on the surface of sewage according to claim 6, characterized in that the packing layer (1) floats on the water surface of the sewage treatment structure, and the height is between 10-50cm. 10. The in-situ treatment device for volatilizing odor on the surface of sewage according to claim 6, characterized in that, the spray system (4) includes a spray head, a water pump and pipelines, and the spray water is the effluent of a sewage treatment plant .