Summary of sludge disposal technology in hospital

Author: Taida machine       Release time:2016-08-19
Reading guidance:Hospital sewage sludge and sewage sludge is different, has its own unique characteristics. Hospital, especially hospital for infectious diseases, tuberculosis hospital and General Hospital of infectiou
   Hospital sewage sludge and sewage sludge is different, has its own unique characteristics. Hospital, especially hospital for infectious diseases, tuberculosis hospital and General Hospital of infectious disease ward for sewage sludge containing a large number of bacteria, virus and parasite eggs. If these sewage sludge without any treatment will discharged into surface waters, it will pollute the water source, the spread of the disease. In order to prevent the pollution of the environment, reduce impacts on human health, so must the specific means of hospital sewage sludge processing to prepare for subsequent further disposal. Following the hospital sludge simple introduction.
    Hospital sewage bacteria accounted for only 30% of the total number of bacteria, the remaining 70% are in the sludge hospital, due to insufficient understanding of the people of sludge borne diseases. The hospital a septic tank not the precipitation and biochemical treatment containing a large number of bacteria, viruses and parasite eggs in the feces. Therefore, the sludge treatment than sewage treatment becomes more and more important, over the past few years of sludge treatment and achieved the following results.
1. Use high-temperature to dispose sludge
   High temperature composting treatment sludge technology methods, mixture ratio of sludge 2000 pounds, corn stalk, 1000 kg of wheat straw, kg mule dung 400~6oo, a layer of straw, corn straw, a layer of horse manure, a layer of dirt paved after mixing, then piled 4x4x1.5 meters square pile. Around with wheat straw luting solid, sprinkled on top of the soil. Sludge reactor in April 3rd seal solid, 4, buried tuberculosis, Mycobacterium bacteria, typhoid and Ascaris egg samples. To April 10, reactor temperature is as high as 53~600c, April 14, reached 66 "C.
   Through the test proved that the embedded tuberculosis, Mycobacterium, typhoid and ascarid eggs whole inactivated. High temperature composting sludge hospital cost, reliable effect for on the outskirts of the city and the commune hospital. But operation should pay attention to safety, in particular, shall not be so contaminated sludge everywhere scatter.
   2. Use CO 60 ray to dispose hospital sludge
     Use Co60 ray sludge dispose hospital sludge. the sludge batch with mechanical drive into the light Wells, sludge circulation around the center pipe flow, in to the radiation dose of disgrace to poison the sterilization work to complete.And then pumped to the emissions as fertilizer use.Intestinal bacteria, HangLin bacteria, parasite eggs with Co60 ya ray source direct illuminate the static test of the sample, the involution of coli, gas bacillus sludge irradiation power over the piano can kill, to Taiwan have typhoid, dysentery, H37Rv, H37R.All 200000 roentgen can kill, BCG sludge exposure, the hatched from eggs are all 120000 roentgen can kill.
  Co60 ray treatment of hospital sewage sludge is suitable for urban centralized treatment field, the effect is reliable, there is a development of the future of a treatment. But due to a high cost of construction, the current in the country is still in the static test stage.
  3. Disinfection treatment
   Hydrated lime,formaldehyde, acetic acid washing shall compare with Taihe ammonia.The results show that the sludge with 20 g/l of lime can get satisfactory disinfection effect;Calculated trine 2 according to the amount of chlorine, chlorine 6 g/l, the results and add lime 20 g/l the same result; Chlorhexidine acetate because of the poorly soluble in water, ammonia and for its weak base, the highest pH is 11, is not satisfactory disinfection effect.After a lot of fecal coliform count experiment shows that the amount of lime sludge added 15 g/l, its pH value is equal to 12, action time 24 hours can achieve satisfactory results.
With the deepening of the study, found that radiation method is an advanced method, the so-called radiation disinfection method is the use of radiation (such as R ray, electronic wire, etc.) irradiation sterilized substances (including pathogenic microorganisms) the occurrence of a series of physical, chemical, biochemical reaction, destruction of microbial life gold of nucleic acid enzymes or proteins, leading to metabolic disorders, propagation delay, the death of the last, a method to achieve the purpose of disinfection.
  Studies show that irradiation disinfection of sewage sludge is a kind of advanced. This method slightly toxic completely, the operation is simple, save energy, especially not bring secondary pollution, and can harm for profit, sewage sludge as fertilizer, often low running cost, is worth to popularize the hospital.
  
 
 

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