MBR wastewater treatment equipment manufacturer——Process description

The sewage first enters the collection and regulation tank for water quantity and quality regulation. The water collection regulating pool is provided by the user, usually using a concrete pool body. The user can determine the regulating pool time based on the production process and water quality stability. The residence time of the regulating pool is4－8hrThen, it is lifted into the integrated sewage treatment device by the lifting pump. The device can discharge water immediately. If the elevation of the outlet pipe of the device is lower than the elevation of the user's drainage pipe, a discharge pump can be added inside or behind the device.

Primary sedimentation tank: adopts a vertical flow sedimentation tank, with a sewage flow rate of0.5-0.8mm/sThe sludge is transported to the sludge tank by utilizing air. Water treatment capacity≤2m/h,It can be merged with the water collection regulating pool to become a primary sedimentation regulating pool. The duration of stay is2.5-6.0hr.

Contact oxidation tank: The water from the primary sedimentation tank flows automatically to the contact oxidation tank for biochemical treatment. The contact tank is divided into three stages. The total duration of stay is3.0-4.5hrThe aeration system adopts our patented technology product - mesh membrane aerator, which greatly improves the efficiency of oxygen use and reduces energy consumption. The gas to water ratio is generally1：15－20.

Secondary sedimentation tank: The sewage after biochemical treatment flows into the secondary sedimentation tank, which is a inclined plate sedimentation tank. The total duration of stay is1-2hr.

Disinfection pool: The contact time of the disinfection pool is determined byTJ14－74The standard is30min,Special sewage can be extended to1－1.5hrGenerally, solid chlorine tablets are used for disinfection (other disinfection devices can be equipped according to user requirements), and industrial organic wastewater can be discharged after treatment without the need for disinfection tanks.

MBR wastewater treatment equipment manufacturer——Equipment features

1The secondary biological contact oxidation treatment process adopts push flow biological contact oxidation, which has a better treatment effect than fully mixed or two-stage series fully mixed biological contact oxidation tanks. And it has a smaller volume than activated sludge tanks, strong adaptability to water quality, good shock load resistance, stable effluent quality, and will not cause sludge expansion. A new type of elastic three-dimensional packing material is used in the pool, with a large specific surface area and easy biofilm formation and detachment by microorganisms. Under the same organic load conditions, it has a high removal rate of organic matter and can improve the solubility of oxygen in the air in water.

2The biochemical tank adopts the biological contact oxidation method, which has a relatively low volume load of fillers, and microorganisms are in their own oxidation stage, resulting in low sludge production and only requiring three months（90Discharge the mud once (using a manure truck to suction or dehydrate it into a mud cake and transport it outside).

3The entire equipment processing system is equipped with a fully automatic electrical control system and equipment fault alarm system, which operates safely and reliably. Generally, there is no need for dedicated personnel to manage it, and only timely maintenance and upkeep of the equipment is required.

MBR wastewater treatment equipment manufacturer——component
（1）Description of sewage treatment process flow:
This project adopts biofilm method: hypoxia----aerobic(A/0)Processing technology.A/ONamely hypoxia+Aerobic biological contact oxidation method is a mature biological treatment process, which has the advantages of high volumetric load, fast biodegradation rate, small footprint, low infrastructure investment and operating costs. It can replace the ordinary activated sludge method used in urban sewage treatment, especially suitable for the treatment of medium and high concentration industrial wastewater, with low investment, small footprint, and high treatment efficiency. This process adopts a combination of biological contact oxidation and precipitation, and is mature and reliable. Sludge is precipitated in the equipment, and a portion of the sludge is further oxidized and decomposed due to the action of dissolved oxygen, while another portion is lifted into the sedimentation tank. The system sludge only needs to be regularly pumped in the sedimentation tank. The working program input of the main control equipment such as wind turbines and submersible sewage pumps in the systemPLCMachine, achieving automatic operation to reduce operational workload and minimize unnecessary human damage.
（2）Ge Grid:
After being collected by the production wastewater management network system, it enters the subsequent treatment system after passing through a coarse grid. Coarse grid is mainly used to intercept large floating objects in sewage, ensuring the normal operation of subsequent treatment structures and effectively reducing treatment loads, providing guarantees for the long-term normal operation of the system.
（3）Sewage regulating tank:
Used to regulate water volume and ensure uniform water quality, so that sewage can enter the subsequent treatment unit more evenly. Setting up a pre aeration system in the regulating tank can improve the impact resistance of the entire system, reduce the foul odor of sewage in anaerobic conditions, and reduce the design scale of subsequent treatment units. Submersible sewage pumps are installed in the sewage tank to lift and send sewage to the subsequent treatment units.
（4）Hypoxia pool:
Elastic packing is installed in the anoxic tank to intercept fine suspended solids in wastewater and remove some organic matter. The nitrification solution after reflux in the anoxic tank is subjected to denitrification and denitrification, which improves the removal rate of ammonia nitrogen in wastewater. The sewage treated with hypoxia enters the aerobic biological treatment tank.

（5）Contact oxidation tank:
Most of the organic matter in the original sewage is degraded and purified here. Aerobic bacteria use fillers as carriers and utilize the organic matter in the sewage as food to decompose it into inorganic salts, thereby achieving the purpose of purification. The survival of aerobic bacteria requires sufficient oxygen, that is, there is enough dissolved oxygen in sewage to achieve the purpose of biochemical treatment. The air in the aerobic tank is provided by a fan, and a new type of semi soft biological packing material is used in the tank. The packing material has a large surface area ratio, long service life, easy film formation, and corrosion resistance. The bottom of the tank is equipped with a microporous aerator, which increases the transfer rate of dissolved oxygen. At the same time, it has the advantages of light weight, non aging, non clogging, and long service life.
Contact the two major components inside the oxidation tank:
Packing: This process uses a new type of three-dimensional elastic packing, a layer dense high-efficiency biochemical packing, which has the advantages of large specific surface area, long service life, easy film formation, and corrosion resistance. At the same time, the filler has a certain degree of stiffness and can cut the bubbles in the sewage at multiple levels, increasing the efficiency of dissolved oxygen. In addition, the fillers are not easily agglomerated, avoiding blockage of the oxidation tank.
Aerator: This process uses a microporous aerator, which has a higher dissolved oxygen transfer rate than other aerators,***The main features are anti-aging, light weight, long service life, as well as corrosion resistance and resistance to clogging.
（6）Sedimentation tank:
After being treated in a biological contact oxidation tank, the wastewater flows automatically into a secondary sedimentation tank to further precipitate and remove detached biofilms and some organic and inorganic small particles. The sedimentation tank is based on the principle of gravity. When the wastewater containing suspended solids flows from bottom to top, the substances are precipitated by gravity. The effluent after sedimentation in the secondary sedimentation tank is clearer and more transparent. The secondary sedimentation tank is a vertical flow sedimentation tank, which uses a sludge pump to regularly lift sludge and gas into the sludge digestion tank. The treated water after sedimentation enters the subsequent treatment equipment.
（7）Disinfection pool
After sedimentation, the virus and Escherichia coli indicators in the sewage still do not meet the discharge standards. In order to eliminate the virus and Escherichia coli, chlorine tablet disinfectant is added for disinfection treatment. The folded plate form is used to rely on its own gravity and directly discharge into nearby municipal pipelines.
（8）Sludge digestion tank:

The remaining sludge discharged from the sedimentation tank is subjected to aerobic digestion and stabilization treatment in the tank to reduce the volume of sludge and improve its stability. The amount of sludge after aerobic digestion is relatively small. Regular contact should be made with the environmental sanitation department to remove and transport the sludge by suction truck or to carry out sludge dewatering treatment for external transportation. The supernatant is refluxed to the regulating tank.
（9）Fan:
Used for gas supply to contact oxidation tanks, pre aeration of regulating tanks, and aerobic digestion treatment of sludge digestion tanks.

MBR wastewater treatment equipment manufacturer——Power outage sequence:

a.When manually controlled:

1First, use the start stop button to stop each load (water pump, fan);

2Disconnect the control power air switch again;

3Then disconnect the air switch of the main circuit power supply for each load;

4、 Disconnect the main power air switch afterwards;

b.During automatic control;

1First, set the switch for selecting the working mode of the water pump and fan to the "manual" position;

2Disconnect the control power air switch again;

3Then disconnect the air switch of the main circuit power supply for each load;

4、 Disconnect the main power air switch afterwards;

c.During equipment maintenance:

1After completing the above operations, it is also necessary to hang on the surface of the box: "Equipment maintenance Equipment maintenance work can only be carried out after the warning sign of 'No Power Transmission'.

2After the maintenance work is completed and confirmed to have no mechanical faults through manual turning, the above warning signs should be taken away before proceeding with the normal operation sequence.