Nan'an Hospital Sewage Treatment Equipment Manufacturer

Nan'an Hospital Sewage Treatment Equipment Manufacturer

The total number of bacteria per milliliter in most medical wastewater in our country is several million to tens of millions, among which the number of coliforms per milliliter in sewage is mostly over 200000. The detection rate of intestinal pathogenic bacteria is 30% to 100%. Hospitals discharge hundreds or thousands of tons of medical wastewater containing infectious pathogens every day. If these wastewater are not treated in time, they will enter the sewage treatment plant through municipal sewage pipelines, causing a decline in the quality of treated water and affecting people's health.

The regulating unit can intercept large solid impurities through a grid plate and has a certain water storage function. After settling, the wastewater is discharged into the aeration chamber, which adopts a structure of bottom inlet and top outlet. The aeration chamber is filled with suspended filter material and has a certain amount of activated sludge at the bottom. With the provision of aeration by the aeration system, a biofilm is formed on the surface of the suspended filter material, which has the function of nitrogen and phosphorus removal and interception of suspended solid impurities. The operating energy consumption is low and the operating cost is low. The wastewater after nitrogen and phosphorus removal flows into the electrolysis chamber under the action of gravity. After the electrolysis chamber is powered on, the pollutants in the wastewater can produce insoluble sediment or gas escape in the electrolysis reaction, effectively reducing COD in the wastewater. The treated wastewater further enters the disinfection process. Room

Equipment process characteristics

(1) High efficiency. This process has a high removal effect on organic matter, ammonia nitrogen, etc. in wastewater. When the total residence time is greater than 54 hours, the effluent after biological denitrification can be treated with coagulation and sedimentation to reduce the COD value to below 100mg/L, and other indicators can also meet the discharge standards, with a total nitrogen removal rate of over 70%.
(2) Simple process, low investment, and low operating costs. This process uses organic matter in wastewater as the carbon source for denitrification, so there is no need to add expensive carbon sources such as methanol. Especially, with the installation of a device for removing fixed ammonia in the ammonia distillation tower, the carbon nitrogen ratio is increased, and the alkalinity generated during denitrification correspondingly reduces the alkali consumption required for nitrification.
(3) The anaerobic denitrification process has a high degradation efficiency for pollutants. The removal rates of COD, BOD5, and SCN - in the anoxic stage are 67%, 38%, and 59%, respectively, while the removal rates of phenol and organic matter are 62% and 36%, respectively. Therefore, denitrification reaction is the most economical and energy-saving degradation process.
(4) High volumetric load. Due to the use of enhanced biochemistry in the nitrification stage and high concentration sludge membrane technology in the denitrification stage, the sludge concentration for nitrification and denitrification has been effectively increased. Compared with similar foreign processes, it has a higher volumetric load.
(5) The anaerobic/aerobic process has strong resistance to load shock. When the inflow water quality fluctuates greatly or the concentration of pollutants is high, this process can maintain normal operation, so the operation and management are also very simple. Through the comparison of the above processes, it is not difficult to see that the biological denitrification process itself not only removes nitrogen, but also degrades organic compounds such as phenol, cyanide, COD, etc. Based on the characteristics of water quantity and quality, we recommend using an anaerobic/aerobic (A/O) biological denitrification (internal circulation) process to ensure that the sewage treatment plant not only meets denitrification requirements, but also other indicators meet discharge standards.

Nan'an Hospital Sewage Treatment Equipment Manufacturer

The regulating tank for medical wastewater treatment is equipped with two sets of telescopic structures consisting of hydraulic cylinders and hydraulic rods, which can adjust the position of the regulating tank body according to the climate temperature. In addition, a first insulation layer and a second insulation layer are set inside the protective cover to maintain the temperature inside the regulating tank body. The heating wire, controller, and temperature sensor are electrically connected to achieve automatic monitoring of the temperature inside the regulating tank and timely heating up, effectively adjusting the temperature.

After chlorine is added to pure water without organic matter, it quickly forms cold chlorine acid. Cold chlorine acid only takes a few minutes to kill Escherichia coli, but it takes an hour to kill certain viruses; If organic matter is present in water, chlorine will react with these substances. Unless a large amount of chlorine is added, free chlorine will not appear in the water. Disinfectants must come into effective contact with bacteria in order to kill them. To ensure optimal sterilization, a certain amount of contact time is required, and good mixing is one of the necessary conditions to improve sterilization efficiency. Chlorine oxygen disinfectant combines the advantages of various disinfectants, with complementary and synergistic effects. Its sterilization speed, efficiency, and broad-spectrum are any single type disinfectant. When mixed disinfectants are added to water, the highly oxidizing ClO2 and O3 first react with the reducing substances (organic matter) in the water, eliminating the possibility of chlorinated organic matter generated during treatment and clearing obstacles for the mixed disinfectant to efficiently exert its bactericidal effect. During the sterilization process, O3 and H2O2 will be quickly consumed, while ClO2 and Cl2 can provide residual chlorine for continuous sterilization. The presence of residual chlorine after the completion of the contact reaction is the main factor affecting the disinfection effect and sustained bactericidal ability. Insufficient residual chlorine cannot achieve the intended disinfection purpose, and the amount of residual chlorine is too high, resulting in the waste of disinfectant. Automatic control of residual chlorine should be implemented based on the specific situation of the hospital.