Dissertation > Excellent graduate degree dissertation topics show

Experimental Study on Domestic Wastewater by Enhanced Coagulation Whirling Technology

Author: LiuYuZhe
Tutor: OuYangQiuLin；HuFengPing
School: East China Jiaotong University
Course: Municipal Engineering
Keywords: Whirling clarifier micro-whirling reactor enhanced coagulation domestic wastewater Polyaluminium Chloride (PAC)
CLC: X703
Type: Master's thesis
Year: 2011
Downloads: 58
Quote: 0
Read: Download Dissertation

Abstract


The sewage in small towns is mainly domestic sewage with small water quantity and large fluctuations in water quality. Over the decades ,with the rapid development of small towns and rural economy, the accelerated expansion of urbanization and the increase of village population, the demand for water has multiplied.At the same time, for the shortage of investment and the lack of environmental awareness, Random disposal of small towns and rural domestic wastewater at high increasingly rate has seriously threatened these environment as well as the aquatic environment. Over the years along with the rapid urbanization in China, the sustainable wastewater control technologies have attracted more and more attentions.The research of high-effieient, energy-saving, adaptability and easy management on wastewater is one of popular topic. The process of whirling Clarifier was put forward on domestic wastewater with the patent products-vortex flocculation reactor. Still a series of experiments were obtained some design parameters and designed to study the efficiency on domestic wastewater system.In this paper, through the static test the experiment coagulation was selected, while the influent factors of enhanced coagulation were analyzed. Then the relationships between turbidity and suspended solid（SS） were confirmed. The main contents of experiments include: the effect of Sewage purification was studied by Hydraulic Circulating Clarifier; then adding certain amount of types of HJTM-1 or HJTM-2 micro-whirling reactors into the first vortex flocculation chamber, the effect was reseached on domestic wastewater by Whirling Clarifier;Furthermore through the combination of different current ratio of the reactor,the effect was studied on domestic wastewater by Whirling Clarifier .The principal conclusion were obtained as follows:1. PAC is the optimized coagulation by static experiment through the coagulation effects and properties of PAC、FeCl3. For PAC the optimum pH of turbidity, CODcr and TP removals were between pH 5.5-7.0.2. The relationship between turbidity and the influent SS is obtained by experiment: （1） YSS = 8.1976X浊度-46.008; the relationship between water turbidity and the effluent SS is obtained by experiment: （2） YSS = 2.0769X浊度+0.8059.3. Compared the Hydraulic Circulating Clarifier, Whirling Clarifier adding certain amount of types of HJTM-1 or HJTM-2 micro-whirling reactors into the first vortex flocculation chamber, combined ratio of vortex reactor on domestic wastewater by Whirling Clarifier,the optimal condition was adding the HJTM-2 micro-whirling reactors into the first vortex flocculation chamber and adding the HJTM-2 micro-whirling reactors into the second vortex flocculation chamber. At this condition, the inffluent turbidity was near 33.01NTU（SS was near 224mg/L）,the dosage of PAC was 33 mg/L,and the effluent turbidity can maintained near 1.5 NTU（SS was near 4 mg/L）. The effluent of SS、TP and CODcr can reach the one standard A, the one standard A and the one standard B of"Discharge Standards of Pollutant for Municipal Wastewater Treatment Plant"（GB18918-2002）.4. Engineering application into the small town of wastewater emissions at 10000m3 / d under the combined use of optimization technology, the running costs of water production is 0.114 yuan/m3.5. Through the results of above: the process of Whirling flocculation had the advantages of strong load, low cost, easy management, stable operation, etc. A series of experiments provided some certain informations to promote the new process on domestic wastewater of small towns and rural area and revealed that the process of Whirling flocculation was the basis for application. Therefore the process was apt to small towns and rural areas for the shortage of economy and the water environment to be improved.

Related Dissertations

  1. Study of the Treatment of Printing and Dyeing Wastewater Using a Pilot-scale Combined Process of Multi-stage Anaerobic Phases and Cross Flow Aerobic Sludge Reactor,X791
  2. Treatment Bath Wastewater by Diatomite Enhanced Coagulation-Clothy Media Filter Process,X703
  3. Treatment of Rural Domestic Wastewater by Aerated Constructed Wetland,X703
  4. Study on Submerged Membrane Reactor of A/O Process for the Treatment of Domestic Wastewater and Project Application,X703
  5. Research on Enhancing Coagulation Using Na-zeolite Powder in the Micro-pollutant Water Treatment,TU991.2
  6. Enhanced Coagulation and Characterization of Dissolved Organic Matter Fractions Removal in Drinking Water,TU991.2
  7. Rapid urbanization in rural sewage governance research,X703
  8. The Co-treatment Technology of Leachate from Three Gorges Resvior with Domestic Wastewater by CASS Process for Discharge under the Standards,X703
  9. Experimental Study on the Performance of Combination of Coagulants (PAC-PDMDAA) on Jialing River Souce Water Treatment,TU991.2
  10. Study on Nitrogen and Phosphorus Removal in Domestic Wastewater by Immobilized Chlorella Pyrenoidosa,X703
  11. Study on Technology of Ozone Enhanced Coagulation of Oil-Field Produced Water,X703.1
  12. The Research on Enhanced Coagulation to Micro-polluted Raw Water Treatment,TU991.2
  13. Study on Domestic Wastewater Treatment Using Compound Precoating Dynamic Membrane Bio-reactor,X703
  14. The Research of Artificial Aeration Strengthen Technology to Slow Flow Heavy Pollution Water Body Water Quality Emergency Repair,X522
  15. Cultivating of Oleaginous Microalgae with Municipal Wastewater,X703
  16. Comparison of Treatment Performance and Fouling Characteristic between Aerobic and Anaerobic Membrane Bioreactor for Domestic Wastewater Treatment,X703.1
  17. The Treatment of Low Temperature and Low Turbidity Water in North Area by Sludge-Reflux Enhanced Coagulation and Micro-Flocculation Filtration,TU991.2
  18. The Removal of Taste and Odor Substances in Water by Attapulgite Adsorption and Enhanced Coagulation,TU991.2
  19. Study on Emergency Treatment of Potable Water Suddenly Polluted by Organochlorine Pesticides,TU991.2
  20. Studies on the Tolerance of Sewage Stress with Six Grass Species,X703

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