Research Progress of High Concentration Organic Wastewater Treatment Technology

2021 ◽  
Vol 11 (04) ◽  
pp. 717-722
Author(s):  
雁鸿 李
Keyword(s):  
Wastewater Treatment ◽  
Research Progress ◽  
High Concentration ◽  
Treatment Technology ◽  
Organic Wastewater

An Instance about Juice Wastewater Treatment with UASB and Bio-Contact Oxidation and Coagulation and Floatation Process

2012 ◽  
Vol 550-553 ◽  
pp. 2108-2111
Author(s):  
Hai Jing Yu ◽  
Hezhang Li
Keyword(s):  
Wastewater Treatment ◽  
Removal Rate ◽  
Wastewater Discharge ◽  
High Concentration ◽  
Contact Oxidation ◽  
Operation Results ◽  
Floatation Process ◽  
Organic Wastewater

Abstract. UASB, bio-contact oxidation, coagulation and floating process was adopted in treatment of juice wastewater. Operation results show that when the main pollutants of COD, BOD and SS in the influent were 6033 mg•L-1, 2512 mg•L-1 and 2200mg•L-1, the effluent could reach 63 mg•L-1, 25 mg•L-1 and 29 mg•L-1, respectively, with the removal rate of 99.0 %, 99.0 %, 98.7 %. The effluent reached the I-class criteria specified in Integrated Wastewater Discharge Standard (GB8978-1996) (COD < 60 mg•L-1, BOD < 20 mg•L-1, SS < 20 mg•L-1). The process provides a practical reference for the similar high concentration organic wastewater treatment processing.

scholarly journals Advanced Technology Wastewater Treatment of Nitrite Ions

2012 ◽  
Vol 7 (1) ◽  
pp. 54-55
Author(s):  
E.G. Morozov ◽  
V.M. Nikol`skii ◽  
T.V. Saprunova ◽  
A.A. Yakovlev
Keyword(s):  
Wastewater Treatment ◽  
Living Organism ◽  
Advanced Technology ◽  
Nitrogen Fertilizers ◽  
Agricultural Pollution ◽  
High Concentration ◽  
Treatment Technology ◽  
Nitrite Ion ◽  
Improper Use ◽  
Living Organisms

The main reason for high concentration of nitrite ions in water is the existence of sources of industrial and agricultural pollution. Contamination of drinking water, juices, wine and other liquids of nitrite ions as a result of improper use of nitrogen fertilizers has an adverse effect on living organism, because under the influence of enzymes nitrite ions in living organisms form high carcinogenic nitrosamines, and the interaction of nitrite ions from blood hemoglobin causes such toxicity that leads to disease cyanosis [1]. Therefore removal of nitrite ions from water has received increased attention. The paper discusses an innovative wastewater treatment technology from the nitrite ion with hypochlorite produced during electrolysis.

Review of Treatment Methods for Fracturing Flowback Fluid

2014 ◽  
Vol 881-883 ◽  
pp. 659-662
Author(s):  
Fu Bao Li ◽  
Jun Jie Yang ◽  
Qin Li ◽  
Hao Wu
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Reaction Kinetics ◽  
Organic Waste ◽  
Reaction Rate ◽  
High Concentration ◽  
Fracturing Fluid ◽  
Treatment Methods ◽  
Organic Wastewater ◽  
At Home

Through analyzing and comparing the treatment of fracturing fluid flowback at home and abroad, it can be found that fluid derived organic waste water can be handled by micro electrolysis economically and efficiently. But there are also some shortages of traditional micro electrolysis. So this paper discusses a new micro-electrolysis technology, namely cavitation-impinging stream electrolysis technology which has several advantages in high concentration organic wastewater treatment. The technology can not only solve the problems that the passivation of process and the plugged equipment in the treatment of fracturing fluid flowback fluid by traditional micro electrolysis, but also can better promote the reaction from the reaction kinetics with the help of Coupling application about cavitation and impinging stream technology, so as to realize the purpose of improving the reaction rate and efficiency.

scholarly journals Research Progress in Pharmaceutical Wastewater Treatment Technology

2019 ◽  
Vol 118 ◽  
pp. 04019
Author(s):  
Hao Feng
Keyword(s):  
Wastewater Treatment ◽  
Production Process ◽  
Chemical Treatment ◽  
Medical Industry ◽  
Research Progress ◽  
Pharmaceutical Wastewater ◽  
Biochemical Treatment ◽  
Treatment Technology ◽  
Human Environment ◽  
New Methods

With the development of the medical industry, according to the characteristics of pharmaceutical wastewater, the corresponding pharmaceutical wastewater treatment technology is used to optimize the technology in the production process, which is a measure for the welfare of human health. The wastewater discharged during the production process, especially the pharmaceutical wastewater, is very polluting to the human environment. According to the physicochemical and biochemical and combined process technologies used in pharmaceutical wastewater at home and abroad, new methods are used to improve the treatment methods, and the application of pharmaceutical wastewater with higher difficulty is realized. This paper analyzes the technology and research progress of pharmaceutical wastewater treatment, and hopes to promote the level of chemical treatment and chemical treatment of biochemical treatment.

Developing and Exploring for Treatment Technology of ADU Wastewater Containing High-Concentration Fluorine and Ammonia-Nitrogen

2016 ◽  
Author(s):  
Xingxing Tan ◽  
Ning Zhao
Keyword(s):  
Wastewater Treatment ◽  
Process Control ◽  
Ammonia Nitrogen ◽  
Treated Wastewater ◽  
Preparation Process ◽  
Wastewater Discharge ◽  
High Concentration ◽  
Treatment Technology ◽  
Treatment Facilities ◽  
New Treatment

A set of new treatment facilities have been built to deal with the high-concentration of fluorine and ammonia-nitrogen (NH3-N) in wastewater generated from the preparation process of UO2 powder by ADU, whose concentration reaches up to 20g/L and 70g/L, respectively. Compared with various methods and summarized from vast experiences, a three-step technological process has been adopted. Firstly, fluorine is fixed by Ca(OH)2, and the product, CaF2, and other solids are filtered by centrifuge. And the teeny solids in the primary filtrate are precipitated by proper flocculants in pipe chute settling pond. Secondly, the treated wastewater with certain alkalinity is rectified by folded-plate rectifying tower. Meanwhile the ammonia is reused. Finally, adsorbed by specific adsorbent, the fluorine and NH3-N concentration of treated wastewater is further reduced. After numerous experiments and two-year running tests, the process control has been improved. Now, the wastewater treatment capability of the facility can reach 45m3/day. And the concentration of fluorine and NH3-N in the final wastewater is less than 10mg/L and 15mg/L, respectively, which can meet the state wastewater discharge standards. Besides, the concentration of the reused ammonia is raised from 5wt% to 25wt%, and the recovery can reach 99.3%.

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