Sewage treatment biochemical system

Sewage treatment biochemical system

Sewage treatment biochemical system——Equipment Introduction

This device adoptsMBRCraftsmanship, throughA/Oprocess,Remove from wastewaterBDDAmmonia nitrogen, while achieving biological nitrogen and phosphorus removal. atADue to the high concentration of organic matter in sewage, microorganisms are in a state of hypoxia. At this time, microorganisms are facultative microorganisms that convert and decompose organic oxygen in sewage intoNH3-NSimultaneously utilizing organic carbon as an electron donorNO2-NTheNO3-Nconvert intoN2Anaerobic conditions promote phosphorus release from polyphosphate accumulating bacteria, which is beneficial for biological phosphorus removal. at0Grade, due to the significant decrease in organic matter concentration, there is still a certain amount of organic matter and a relatively high concentrationNH3-NIn order to further oxidize and decompose organic matter, and to ensure smooth nitrification while carbonization is complete0The level mainly adopts high efficiencyMBRProcess, decomposing organic matter intoCO2andH2OSimultaneously complete nitrification and denitrification, and some unremoved nitrate is refluxed toAPool, continue to complete denitrification reaction. This device is developed independently by our companyMBRCarrier, with a specific surface area of up to20000M2/M3It is a regular suspended carrier10More than double.

Sewage treatment biochemical system——technological process:

The denitrification of integrated sewage treatment equipment is achieved by first oxidizing ammonia nitrogen to nitrate through nitrification reaction under aerobic conditions, and then reducing nitrate to gaseous nitrogen through denitrification reaction under anaerobic conditions to remove it from water. The biological denitrification processes developed from this mostly separate the anoxic zone from the aerobic zone, forming a hierarchical nitrification denitrification process, so that nitrification and denitrification can be carried out independently.Nitrification of integrated sewage treatment equipment—Denitrification denitrification treatment is a sewage microbial denitrification treatment method that utilizes nitrifying bacteria and denitrifying bacteria. This method is divided into two stages: nitrification and denitrification. Under aerobic conditions, nitrifying bacteria in wastewater are used to convert nitrogen compounds into nitrate, and then under anaerobic conditions (dissolved oxygen<0.5mg/L)Using denitrifying bacteria in wastewater to reduce nitrate to gaseous nitrogen. Nitrification reactions can be carried out using either primary nitrification or two-stage nitrification. In primary nitrification, carbon oxidation process also occurs simultaneously; In secondary nitrification, the carbonization and nitrification processes can be carried out in separate tanks. The nitrification tank can be in the form of an aeration tank. The two-stage biological denitrification method is an effective method for sewage microbial denitrification and has been widely used as a standard biological denitrification method.

Sewage treatment biochemical system——Composition of equipment

1Aeration machine2inlet pipe3Reinforcing bars4shell5Settling sludge6propeller7Backflow seam 8rain cover 9Skimmer 10outlet pipe 11sludge discharge pipe 12Mud suction hood

Sewage treatment biochemical system——AGrade biological treatment tank (hydrolysis acidification tank)

Purpose of setting: To further mix the sewage, fully utilize the efficient bio elastic packing material in the pool as a bacterial carrier, and rely on facultative microorganisms to convert insoluble organic matter in the sewage into soluble organic matter, hydrolyze large molecular organic matter into small molecular organic matter, in order to facilitate the subsequent processOThe grade biological treatment tank further oxidizes and decomposes, and at the same time, through the reflux of nitrate carbon nitrogen, partial nitrification and denitrification can be carried out under the action of nitrifying bacteria to remove ammonia nitrogen.

Design features: Built in high-efficiency bio elastic filler, with hydrolysis and acidification function, and adjustable to beOGrade biological oxidation tank to increase biochemical retention time,Improve processing efficiency.

The pool is designed as a steel structure box.

Sewage treatment biochemical system——Characteristics of sewage treatment equipment
1)Small footprint, high degree of integrated automation, strong stability, no need for dedicated personnel to be on duty;
2)The effluent quality is excellent and can meet the pollutant discharge standards of urban sewage treatment plants（GB18918-2002）First levelAStandard;
3)Easy installation and debugging, operate according to the user manual, and can run at full load in one week under normal temperature climate;
4)Low or no sludge production (negligible);
5)Short construction period and small civil engineering quantity;
6)The operating cost is low, and the cost of treating one ton of sewage is0.4～0.8Yuan;
7)Low comprehensive construction cost,500m3/dThe following scale offers high cost-effectiveness;

Sewage treatment biochemical system——Daily maintenance and upkeep

1The fan generally operates6It is necessary to change the engine oil every month or so to improve the service life of the fan;
2It is necessary to ensure that the air inlet of the fan is unobstructed;
3It is necessary to pay attention to the absence of large solid substances in the sewage entering the equipment, in order to avoid blocking the pipes and holes and damaging the water pump;
4The equipment entry hole must be covered to prevent accidents or large solid substances from falling in;
5Wastewater entering the geographic sewage treatment equipmentPHThe value must be within6—9Between them, being acidic or alkaline can affect the normal growth of biofilms.
Jiayuan Environmental Protection hereby reminds that the maintenance and troubleshooting of integrated sewage treatment equipment should be flexibly handled according to the actual situation, and any problems found must be dealt with in a timely manner.

Sewage treatment biochemical system——What are the main types of sewage treatment equipment?
Sewage treatment equipment can be roughly divided into: domestic sewage treatment equipment, integrated sewage treatment equipment, buried sewage treatment equipment, food factory sewage treatment equipment, hospital sewage treatment equipment, rural sewage treatment equipment, slaughter sewage treatment equipment, printing and dyeing sewage treatment equipment, etc.
Taking domestic sewage treatment as an example, the required sewage treatment equipment is mainly divided into three categories:
1Specialized equipment: various types of sewage pumps, sludge pumps, storage pumps, metering pumps, screw pumps, air compressors, Roots blowers, centrifugal blowers, external aerators, active water intake prototypes, grid cleaning machines, sand scrapers, mud scrapers, mud scraper suction machines, sludge concentration scrapers, digestion tank sludge mixing equipment, biogas boilers, heat exchangers, liquid medicine mixers, and sludge dewatering machines.
2Electrical equipment: AC/DC motors, variable speed motors, starting switch equipment, lighting equipment, lightning protection equipment, power distribution equipment (including cables, indoor overhead lines, barrier switches, load switches, fuses, few oil switches, voltage transformers, current transformers, power capacitors, circuit breakers, protectors, active devices, and grounding devices, etc.).
3General equipment: electric hoist, centrifuge, constant temperature box, oven, refrigerator, various manual and electric gate valves, butterfly valves, gate opening and closing machines and check valves, beautification medicine spraying vehicles, manual and electric lawn mowers, winches, lathes, planers, milling machines, bridge cranes, transport vehicles, etc.