Dissertation > Excellent graduate degree dissertation topics show

Research Sulphate Control in Anaerobic Biotreatment Penicillin Wastewater

Author: ZhuGuiYan
Tutor: WangLuGuang；LiZhanChen
School: Hebei University
Course: Applied Chemistry
Keywords: penicillin wastewater EGSB biodegradability sulfate concentration granular sludge
CLC: X703
Type: Master's thesis
Year: 2009
Downloads: 48
Quote: 0
Read: Download Dissertation

Abstract


Desulfurization process under anaerobic conditions of anaerobic expanded granular sludge bed (EGSB) reactor for treating penicillin waste water was systematically investigated.Firstly, the test analyzed the characteristic of antibiotic wastewater particularity. The result shown that:①The penicillin wastewater contains high concentration of toxic substances such as sulfate, excess nitrogen and poor anaerobic biodegradability. (COD:N: P about 200:43.37:0.78 and BOD/COD about 0.26) It is obvious that some factors of inhibiting anaerobic digestion in the wastewater.②Sulfate concentration have strong effect on the anaerobic digestion. Along with the sulfate concentration increased, COD removal rate decreased gradually. When the sulfate concentration above 5000mg/L and COD/SO42-<1, anaerobic degradation have been seriously inhibited.The study of the sulfate impact in penicillin wastewater treatment shown that no desulfurization unit in the circumstances, when the sulfate concentration about 2000 mg/L, COD/SO42- under 3, the reactor operating results and stability deterioration. Penicillin wastewater actually exceeded this threshold, it must be taken to a certain degree of desulfurization technology control Sulphate Inhibition. At this point, under certain conditions on the reactor EGSB organic load, under anaerobic conditions using the way of adding nitrates to the influte water to cultivate desulfurization bacteria, Will be transformed sulfide ions into harmless sulfur, EGSB which take inhibition on the process of EGSB treatment high-sulfate wastewater. And EGSB reactor influent COD concentration reached 6000mg/L sulphate concentration of 2400mg/L. When the EGSB-desulfurization System penicillin wastewater the result shown that:When the system was operated at 100%penicillin wastewater influent, and COD no less than 6000mg/L, organic loading 12kgCOD/(m3·d), COD/SO42- value no less than 2.5, liquid upflow velocity 2.2 m/h, then the COD removal efficiency higher than 85%, SO42- removal rate reached more than 80%, It can be seen under anaerobic conditions such desulfurization technology to control the inhibitory effect of sulfate and EGSB reactor reached stable operation conditions.Along with the EGSB’s operation, the granular diameter in the bottom of the sludge bed were larger than that in the upper part of the sludge bed. Observed under the scanning electronic microscopy, we found that in the early time, there was distinct predominance of Methanosaeta. Along with the organic loading increased, it was appeared not the Methanosaeta but the Sarcina-type bacteria. In stable operation at medium, the granules had more microbe species. On the Methanosaeta and Sarcina-type bacteria, there are many Methanobacterium and Desulfovibrio congregated developed. Increase the Desulphurization Plant, the biggest difference is that the internal flora in the sludge increase in the number of bacilli.In the desulfurization reactor to run the course, with the growth of running time, sludge from mainly of filamentous bacteria in the early run into bacillus dominated later, especially after the Penicillin wastewater input the reactor, A large number of bamboo-shaped bacilli were arranged in fascicular sludge internal With the increasing of Sulfide’s concentration in the influte wasterwater, some light yellow metallic S particles appear in the sludge surface, and Some sulfur precipitation occurred at the bottom of water.

Related Dissertations

  1. Experimental Study of Improved UASB Reactor Treatment of Organic Wastewater,X703
  2. The Study of Aerobic Granule Sludge Cultivation with Industrial Wastewater,X703
  3. EGSB-MBR- ozone treatment process wastewater bamboo products,X798
  4. Impact aerobic granular sludge formation and structural stability of the key components of extracellular polymer research,X703
  5. Aerobic granular sludge reactor startup and stable operation of the Strategy,X703
  6. Culture and its effect on aerobic granular sludge wastewater treatment research HMX,X703
  7. Research on Important Microbal Population and Corresponding Functional Genes in Industrial Anaerobic Granular Sludge,X703
  8. Study on Pretreat of Coking Wastewater by Spony Iron,X703
  9. Study on the Application of Anaerobic Granular Sludge to Antibiotic Wastewater with High Concentration Treatment,X703
  10. New EGSB Processing High Potency Waste Water Potency and Mechanism Research,X703
  11. Study on New Aerobic Reactor with Sludge Filtering,X703.1
  12. Study on the Affect of the Mixed Treatment of the Dye and Papermaking Wastewater to A/O Process,X703
  13. The UASB reactor retting flax wastewater dynamics research,X703
  14. Study on Reactor with Granules and Sludge Filtering,X703.1
  15. UASB reactor with iron ions are accelerated granular sludge Quick Start Research,X703.1
  16. Study on Cultivation of Aerobic Granular Sludge and Operational Performance with Domestic Wastewater,X703
  17. Performance Analysis and Application Study of Vertical Anaerobic Baffled Reactor,X703
  18. The IC reactor vaccination fiberboard wastewater operating characteristics of sludge treatment,X703
  19. Study on Multi-Non-Phosphorus Scale and Corrosion Inhibitor,TQ085.4
  20. Research on Effects of Microbial Flocculant on the Growth of Chlorella Pyrenoidosa,TU991.2

CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization
© 2012 www.DissertationTopic.Net  Mobile