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American Biocleaner biological deodorizer detailed

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1. Technical background

Due to the water treatment process adopted by the sewage treatment plant, there is a large amount of odor every day, which has a bad impact on the daily life of residents around the sewage treatment plant。Now the United States Biocleaner biological deodorization technology is introduced to transform the sewage treatment plant to remove odor。

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2. Causes of odor

The aeration head in the aeration system of the sewage treatment plant is about 5 meters below the water surface, but the effective water depth of the treatment tank of the water treatment plant is about 7 meters。Under the action of microorganisms, a large part of the pollutants in the sewage are converted into organic sludge. After long-term operation of the sewage treatment plant, the organic sludge accumulates at the bottom of the pool of the sewage treatment plant to form a sludge layer。The water at the bottom of the pool is deficient in dissolved oxygen (DO)。The activity of aerobic bacteria decreased, the activity of anaerobic bacteria increased, and the microbial activity at the bottom of the final water treatment pond was mainly anaerobic reaction。

2.1 Source of odor

** is directly volatilized from sewage, solvents, petroleum derivatives and other volatile organic components;

The second type is newly formed due to the chemical reaction of microorganisms, and especially has a lot to do with the activity of anaerobic bacteria。

2.2 Odor types

** is sulfur-containing compounds, such as hydrogen sulfide, mercaptan, thioether, sulfur phenols, such as rotten eggs, rotten cabbage smell;

The second category is hydrogen-containing compounds, such as ammonia (gas), amines, mainly irritating, rotten, fishy odor;

The third type is skatine, which is dominated by fecal odor and nausea.

The fourth category is other odors。

The odor of sewage treatment plants is mainly hydrogen sulfide (H2S), second and third types of odor。

3, deodorization technology

3.1. Technical sources

Biocleaner microbial sewage treatment is the use of solidified microorganisms imported from the United States for sewage treatment. Solidified microorganisms are microorganisms selected from nature by BOC company, domesticated and implanted into the carrier。Through the advanced curing cell technology, the microorganisms get special protection in the carrier。BOC is at the leading level of biological treatment technology, with more than 11,000 kinds of microorganisms screened from nature, according to different pollution conditions and treatment requirements in the water body, more than 10 kinds of advantageous combinations of microorganisms selected for specific pollutants into the patented carrier。Once it enters the water body, it can produce a high density of microbial flora, the density of 106/CC, through the continuous production of microorganisms, the pollutants that need to be treated are degraded, and the optimized combination of microorganisms can quickly "eat" the sludge in the sewage through collaborative combat and high energy, and remove the odor。It is suitable for industrial wastewater and domestic sewage, river, lake, river, salt water lake, bay treatment。

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3.2. Introduction of immobilized microorganism technology

Through ion adsorption, embedding, cross-linking, covalent binding and other biological engineering means, the superior combination of microorganisms selected by a variety of specific pollutants are fixed on a multi-enzyme system carrier, so that the microorganisms get special protection on the carrier, a new and revolutionary sewage biochemical treatment technology。

The core of this technology is the extraction and enrichment of pure microorganisms and the carrier bed technology with excellent performance. Through the implantation of carriers, high-density microbial flora can be produced, with a density of up to 20000mg/l, which is 10 times the biological concentration of ordinary activated sludge method。Pollutants flow into the reactor,Carrier bed can ** all sewage that needs to be treated can be in contact with microorganisms,Each carrier particle is only 3/8 inch in diameter,The internal and external surface area of the pores in the microbial carrier is about 2-3 square meters,It can make the microorganisms have a larger space to attach and multiply,Only a small proportion of microorganisms are exposed to high concentrations of toxic chemicals,Most of the microbes are protected,High concentrations of sewage can harm some microorganisms,The inner layer protection of the carrier makes the inner layer microorganisms not affected by the impact,repropagation,Replenish the amount of microbial loss。

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3.3. Technical principles

Through the operation of Biocleaner device, biofilm is formed in the water treatment pool, and the malodorous gas is converted into CO2, H2O, SO42- and NO3- by the metabolic action of microorganisms And other inorganic substances to purify odor gases。

The process by which the odor produced in the tank body is transformed into odorless:

C+H+N+S+P+mincrals+biomass

CaCO2

Sa SO42-

Na NO3-

Ha H2O

R-Cla CO2+HCl

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4. Implementation of deodorization program

As shown in the following picture,Six sets of Biocleaner equipment have been added on the basis of the original sewage treatment plant (Bio1, Bio2, Bio3, Bio4, Bio5, Bio6 in the figure).,At the same time, six floating oxygen pumps are installed (shown as oxygen pump E, oxygen pump F, oxygen pump G, oxygen pump H, oxygen pump P, oxygen pump Q).。

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4.1. Equipment description:

Blower: three-phase motor, power 2.2kw The motor outputs 145m3/h of air and delivers approximately 3 per hour to the surrounding waters.65 kilograms of oxygen。

Aeration plate: formed from HDPE plastic injection molding, with 1.The 68m aerator pipe is connected with a steel hoop, and the pipe frame is 1m*1.2m

Buoy: PE, 30 wide.48cm * Length 22.86cm * Height 20.32cm, can provide buoyancy for Biocleaner device, maintain stability, reduce energy consumption

Microbial generator: made of stainless steel pipe with holes, diameter 10.16cm, 3m long。The generator is filled with microbial carrier medium, and there is an aerator pipe of the same length as the generator, and a 55W blower is used to provide oxygen for microorganisms

Baffle plate: PE plastic plate, baffle plate is composed of two backboards and two side plates, each baffle is 83.31cm * 50.80cm * 2mm to provide water flow and absorption

Angle FRP frame: light weight, large bearing capacity, can be soaked in any kind of sewage for a long time without being easily corroded

5. Operation and maintenance management

The main operating equipment for the whole project is six sets of Biocleaner and six oxygen pumps。The complete Biocleaner unit includes an aeration system and aeration of the microbiome tube (hollow stainless steel tube with solidified microorganisms at the bottom of the unit)。

5.1. Daily operation inspection work

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5.2. Operation and maintenance of aeration system

The aeration system of each Biocleaner device is divided into two parts: one is aerated with oxygen and the other is aerated with blown microorganisms。Biocleaner equipment's aerated aeration grid is a high-energy aeration system that transfers dissolved oxygen3 to the water body per hour per unit.6kg;The purpose of blowing microbial aeration is to blow the microorganisms generated on the microbial tube at the bottom of the equipment into the water for aeration, so as to prevent the microorganisms propagated on the microbial tube from forming biofilms on the surface of the microbial tube and prevent the microorganisms from entering the water。

The bubbles that appear when the oxygenation and explosion system is working normally are uniform and fine bubbles。When the aeration system fails, the following conditions will occur, and the maintenance plan。

5.3. Maintenance and replacement of the overall equipment

The entire Biocleaner device is maintained every 4 to 6 months, as shown in the following table:

Complete Biocleaner device parts replacement, cycle time and material cost

5.4, Bio1-6 equipment must be moved

The overall sewage pool area of the sewage treatment plant is large. In order to rationally utilize the Biocleaner equipment and maximize the ozone function, the Bio1, Bio2, Bio3, Bio4, Bio5 and Boi6 equipment need to be moved regularly。As shown in the Deodorization Plan, the Bio and Bio2 devices are located on both sides of the water intake of the sewage treatment tank. The two devices do not need to be moved。

The first time to move the Biocleaner device is shown in the figure below (after the device is moved). The first time to move the device position is around September 7, 2015, and the two devices Bio3 and Bio5 are moved to the middle of the pool。The position of the oxygen pump is shown in the figure。

The second move of the Biceoleaner equipment is shown in the figure below "Final Thumbnail of the Deodorization Project at the sewage Treatment Plant *"。

Time to move the device the second time。Note: The directions of Bio4 and Bio6 devices need to be rotated 180º on a strict horizontal plane。The pushing direction of the device is shown in the figure。

5.5, oxygen pump E, F, G, H changes

When the Biceoleaner equipment is moved the first time on September 7, 2015, the position of the oxygen pump will be moved according to the diagram "Outline of Equipment movement" without any other changes。

When the Biceoleaner unit was moved for the second time on 27 September 2015, oxygen pumps E, F, G and H were replaced with cyclopumps。The placement of the pump is shown in the final thumbnail of the deodorization Project of Tongxin County Sewage Treatment Plant. Replace the nozzle of the E, F, G, and H oxygen pump with an interface, and then connect the water pipe。Water quality dissolved oxygen (DO) is monitored along the edge of the white area in the figure below (DO content can be monitored using a portable dissolved oxygen analyzer, and the introduction of portable dissolved oxygen analyzer equipment is attached). The water near the Biceoleaner equipment is filmed to the area with the lowest dissolved oxygen content using a cyclopump。(Sites with low DO content are prone to anaerobic reactions。The products of anaerobic reaction are formaldehyde CH4, hydrogen sulfide H2S, ammonia NH3 and other gases。Among them, ammonia-loaded hydrogen sulfide is a malignant gas)。If the DO in the upper left corner of the figure is low, you can use the E pump to pump water to this position, and the rest is the same。