Price of integrated sewage treatment equipment using contact oxidation method

Price of integrated sewage treatment equipment using contact oxidation method——Introduction to Principles

Due to the high concentration of organic matter in sewage, microorganisms are in a state of gas deficiency. At this time, microorganisms are facultative microorganisms that convert and decompose organic ammonia in sewage intoNH3-NMeanwhile, utilizing organic carbon as an electron donorNOˉ2-NTheNOˉ3-Nconvert toN2And it also utilizes some organic carbon sources andNH3-NSynthesize new cellular substances. So buried sewage treatment equipmentAThe graded tank not only has a certain function of removing organic matter, reducing the organic load of subsequent aerobic tanks to facilitate nitrification, but also relies on the high concentration of organic matter in the raw water to complete denitrification and ultimately eliminate nitrogen eutrophication pollution. atOGrade, due to the significant decrease in organic matter concentration, there is still a certain amount of organic matter and a relatively high concentrationNH3-NExistence. In order to further oxidize and decompose organic matter, and to ensure smooth nitrification while carbonization is complete, buried sewage treatment equipment is usedOSet up aerobic biological contact oxidation tanks with low organic load. Underground sewage treatment equipmentOA graded pool mainly contains aerobic microorganisms and aerobic bacteria (nitrifying bacteria). Aerobic microorganisms decompose organic matter intoCO2andH2OAutotrophic bacteria (nitrifying bacteria) utilize inorganic carbon produced by the decomposition of organic matter or in the airCO2As a source of nutrients, extract nutrients from wastewaterNHˉ3-Nconvert intoNˉ2-ONTheNˉ3-ONTheOThe effluent from the cascade pool flows back toALevel pool, forAThe graded pool provides electron acceptors and ultimately eliminates nitrogen pollution through denitrification.

Price of integrated sewage treatment equipment using contact oxidation method——workflow

1Primary sedimentation tank. The primary sedimentation tank of the integrated sewage treatment equipment for daily life is a vertical flow sedimentation tank, and the upward flow velocity of sewage in the deep sedimentation tank is0.6-0.7millimeter/In seconds, the settled sludge is lifted to the sludge tank by air.(Note:SLZ-A/O0.5-5m3/hNo initial sedimentation tank is set up)
2Contact with oxidation tank. After the initial sedimentation of the integrated sewage treatment equipment, the water flows automatically to the contact tank for biochemical treatment. The contact tank is divided into three stages, with a total residence time of1More than hours. Enhanced domestic sewage treatment equipment can achieve contact oxidation time of up to6Hour by hour, the filler is a novel filler that is easy to film and does not clog. The specific surface area of the filler is160m2/m3The gas water ratio of the contact pool is12：1左右。(SLZ-A/O0.5-6T/hThe contact pool is a second level)
3Secondary sedimentation tank. The biochemical wastewater flows into the secondary sedimentation tank, which consists of two vertical flow sedimentation tanks operating in parallel. The upward flow velocity is0.3-0.4millimeter/In seconds. The sludge is discharged by air lifting to the sludge tank.(noteWSZA0.5-5Mt/hThe sludge flows automatically into the sludge tank)
4Disinfection pool and disinfection pool device. Disinfection pool according to specifications:“TJ14-74”The standard is30In minutes, if it is hospital sewage, the disinfection tank can increase the residence time to1-1.5At the hour, use solid chlorine tablets for contact dissolution disinfection. The disinfection device can continuously change the dosage according to the size of the water output, achieving the goal of adding more water and more medicine, and adding less water and less medicine. Other disinfection devices can be prepared separately.
5Sludge tank. All sludge from the primary and secondary sedimentation tanks is transported by airWSZ-AAerobic digestion is carried out in the sludge tank. The clear liquid from the sludge tank flows back to the heat exchange oxidation tank for further treatment. After digestion, there is very little residual sludge, generally1-2Clean once a year. The cleaning method is to use a suction truck to extend from the inspection hole of the sludge tank into the bottom of the sludge and carry out suction and transportation.(SLZ-A/O0.5-6T/hThe sludge is digested anaerobically)
6Fan room, fan. Integrated sewage treatment equipment for daily lifeSLZ-A/OThe fan is located above the disinfection area, and the inlet adopts double-layer sound insulation. The air inlet has a muffler and a fan filter, so there is no noise during operation. The fan adopts two rotary fans, which can automatically alternate operation. Single fan operating life30000About an hour.
7Adjust. Chemical wastewater has the characteristic of variable water quality and quantity, which can vary greatly within a day or a shift, especially when materials flow into the wastewater due to abnormal operation or equipment or pipeline leaks. The changes in wastewater quality and quantity are detrimental to the normal functioning of drainage facilities and wastewater treatment equipment, especially biological treatment equipment, and may even cause damage. In this case, a common measure taken is to install a regulating tank before the wastewater treatment system to adjust the water volume(均量池)The balance of water quality(Homogenization tank)To ensure the normal operation of wastewater treatment. In addition, the averaging tank can also serve as a temporary storage for accident drainage.
8Centrifugal separation. Centrifugal separation for wastewater treatment is the use of centrifugal force generated by rapid rotation to separate suspended particles in wastewater. When wastewater containing suspended particles undergoes rapid rotational motion, the larger solid particles are thrown to the periphery, while the smaller ones remain in the inner ring, thereby separating the wastewater from the suspended particles and purifying the wastewater.
Price of integrated sewage treatment equipment using contact oxidation method——Installation:

AEquipment lifting: There are four orifice plates on the inner wall of this equipment for lifting.
BThe elevation of the equipment can be installed overhead or placed on flat ground according to the needs of the project.
CThe equipment foundation is kept level, and the size of the concrete foundation for the equipment is shown in the figure).
DValves need to be added to the vent ports in the clear water area, separation area, and mixing area.
E、 The connecting pipeline between the sewage inlet and the reaction tank should be as short as possible to prevent flocs from being crushed in the pipeline.
FThe sludge outlet can be connected to the sludge storage tank, and the connecting pipes and bends should not be too many. The shorter the pipe, the better.
GThe placement of the electrical box is generally based on the principles of safety and ease of operation. Can be placed on the side of the escalator or nearby
Location, but attention should be paid to moisture prevention, moisture proofing, and preventing corrosive gases from damaging electrical components.

Price of integrated sewage treatment equipment using contact oxidation method——Advantages of integrated equipment

(1)Make full use of idle funds in society. The total investment in integrated equipment is very small,Suitable for small-scale social capital investment in real estate, small factories, etc,It can directly and effectively utilize idle funds.

(2)Relieve the pressure on municipal pipeline construction. The construction of large-scale sewage treatment plants often requires the construction of a large-scale municipal pipeline system. For the diversion drainage system,Small flow sewage can be directly discharged into rainwater pipes or water bodies after being treated by integrated equipment,Without increasing the pressure on the sewage pipeline.

(3)Effectively save construction area. The construction of sewage treatment plants will inevitably occupy a large area of land,Destroying the ecology. And with the process of urbanization,Land is becoming increasingly scarce. Integrated equipment has high processing efficiency,And it can be buried for treatment,Basically does not occupy surface area,Does not affect the overall layout and environmental landscape of the building complex.

(4)Effectively realizing the reuse of reclaimed water,water saving. The main obstacle for large-scale sewage treatment plants to carry out reclaimed water management is also the need to lay a large network of reclaimed water pipelines. And integrated devices can be more flexible in configuration,Usually, the drainage point is also a reclaimed water reuse point,It can completely save the construction of the waterway. With the increasing demand for reclaimed water reuse in China,Integrated equipment will demonstrate greater advantages.

Price of integrated sewage treatment equipment using contact oxidation method——Installation precautions:

(1）Prepare according to the installation diagram and check whether the inlet and outlet directions are correct during lifting. The position and direction of the tank body cannot be placed incorrectly, and the distance between each other must be accurate

（2）After the product is lifted into place, the levelness should be measured. If it is uneven, adjustments should be made to make it level.

（3）After hoisting in place, connect the pipes and inject clean water into the equipment to check for any leaks in each pipe,

（4）Connect the control line of the electrical control box to the aerator and water pump, and connect the electrical control box to the power supply. When wiring, pay attention to the direction of rotation of the motor and fan, which must be the same as the indicated direction.

（5）After the backfilling is completed, install ground dosing and disinfection equipment, as well as electrical control cabinets.

（6）After the installation of the equipment is completed, it is necessary to first connect the supporting water pipes and wires of the ground electrical equipment and dosing equipment where the buried equipment is located.