OEM Integrated Sewage Treatment Equipment With Odor Collection System
The integrated sewage treatment equipment is a device that integrates the primary sedimentation tank, I and II contact oxidation tanks, secondary sedimentation tanks, and sludge tanks, and performs air aeration in the I and II contact oxidation tanks to make contact oxidation The effective combination of the activated sludge method and the activated sludge method saves the trouble of finding someone to design a sewage treatment process and do infrastructure construction.
Scope of application
The integrated sewage treatment equipment is suitable for domestic sewage in residential quarters, villages, villages, office buildings, shopping malls, hotels, restaurants, nursing homes, institutions, schools, troops, hospitals, highways, railways, factories, mines, tourist attractions, etc. Similar to the treatment and reuse of small and medium-sized industrial organic wastewater such as slaughter, aquatic product processing, and food. The water quality of the sewage treated by this equipment meets the first level B standard of the national comprehensive sewage treatment discharge standard.
1. A/O process
2. SBR process
3. AAO process
4. MBR process
The main treatment method is the contact oxidation method with biochemical treatment technology. The design of the combined integrated domestic sewage treatment equipment is mainly the treatment of domestic sewage and similar industrial organic sewage. The water quality parameters are calculated according to the general domestic sewage water quality, and the influent BOD5 is 200mg/ L meter.
The main components: 1. Hydrolysis acidification tank; 2. Contact oxidation tank; 3. Impurity sedimentation tank; 4. Disinfection treatment; 5. Sludge aerobic digestion tank.
1. Hydrolysis acidification tank
The main process of this process is to pre-treat the sewage before treatment, carry out certain anaerobic fermentation of the wastewater in the water, and improve the biodegradability of the sewage. This is an important step before the sewage treatment, which can directly affect the later sewage. Treatment efficiency and treatment time can maximize the efficiency of sewage treatment and reduce consumption.
2. Contact oxidation pool
The oxidation tank is divided into several grades according to the pollution degree of the water treatment, ordinary type and enhanced type. It is generally judged based on the processing time. If the treatment time is not more than four hours, use an ordinary oxidation tank, and if the treatment time is between 4-6 hours, use an enhanced oxidation tank. Mainly, the effluent from the hydrolysis acidification tank is flowed to the contact oxidation tank for biochemical treatment. Most of the organic matter in the original sewage is degraded and purified here. The aerobic bacteria use the filler as a carrier and use the organic matter in the sewage as food to decompose the organic matter in the sewage into inorganic salts to achieve the purpose of purification. For the survival of aerobic bacteria, there must be enough oxygen, that is, enough dissolved oxygen in the sewage, in order to achieve the purpose of biochemical treatment. The aerobic pool air is provided by a fan. The pool adopts a new type of elastic three-dimensional packing, which has a large surface area ratio, long service life, easy film formation, and corrosion resistance. The bottom of the pool adopts a rotary mixing aerator to make the transfer rate of dissolved oxygen high. At the same time, it has the advantages of light weight, no aging, not easy to be blocked, and long service life. The gas-water ratio of the contact pool is about 12:1. (0.5-5 m3/h contact pool is secondary)
3. Impurity sedimentation tank
After the sewage is treated by the biological contact oxidation tank, the effluent flows into the sedimentation tank by itself to further precipitate and remove the fallen biofilm and some organic and inorganic small particles. The sedimentation tank is based on the principle of gravity. When the sewage containing suspended solids flows from bottom to top At this time, gravity will precipitate the substance. The upper part of the sedimentation tank is equipped with an adjustable outlet weir to adjust the water level; the lower part is equipped with a cone-shaped sedimentation area and a sludge gas device. The air source is provided by a fan, and the sludge is transported to the sludge aerobic digestion tank by air stripping.
The disinfection tank is 30 minutes according to the standard "TJ14-74". If it is hospital sewage, the disinfection tank will increase the residence time to 1-1.5 hours. Our company adopts chlorine dioxide disinfection device. The disinfection pool and disinfection device can continuously change the dosage according to the size of the water output, so as to achieve the purpose of adding more water with more water, and adding less water with less water. Other devices can be prepared separately. (If it is used for industrial sewage, the disinfection tank and disinfection device can be omitted.)
5. Sludge aerobic 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 the sludge and improve the stability of the sludge. The amount of sludge after aerobic digestion is small. When cleaning, a suction truck can be used to extend from the inspection hole of the sludge tank to the bottom of the sludge tank for suction and then transport it out (clean up once every six months). The upper part of the sludge aerobic digestion tank is equipped with a supernatant liquid return device, so that the supernatant liquid overflows to the hydrolysis acidification tank.