Application of Physical Polarization Water Treatment Technology on Circulating Cooling Water System of Power Plant

2013 ◽  
Vol 726-731 ◽  
pp. 606-609 ◽  
Author(s):  
Dan Zeng ◽  
Zhen Yi Fei ◽  
Min Wang ◽  
Ying Li ◽  
Mu Sen Li
Keyword(s):  
Water Treatment ◽  
Power Plant ◽  
Environmental Protection ◽  
Water Conservation ◽  
New Technology ◽  
Water System ◽  
Cooling Water ◽  
Economic Benefits ◽  
Treatment Technology ◽  
Scale Inhibition

Physical polarization Water Treatment (PPWT) is a new technology that takes advantage of polarization electric field polarizing water molecules to achieve the purpose of scale inhibition and dissolution as well as killing bacteria and algae. The PPWT device made by Shandong Langkun Energy Conservation & Environmental Protection Technology Co., Ltd and running in the biomass power plant of Shandong Kaitai Group Co. achieved the effects of scale inhibition and solution which are even more superior to the traditional method of chemical dosing. It brings annual water conservation of 147600 m3 and economic benefits of hundreds of thousands to millions for forsaking chemical dosing for a 15MW power unit. Therefore, Considerable economic and social benefits and the goals required by the state to the enterprises of energy saving, emission reduction and environmental protection are achieved.

The Study and Application on Water Treatment Technology of High-Frequency Electric Field

2013 ◽  
Vol 416-417 ◽  
pp. 1056-1059
Author(s):  
Sen Li ◽  
Hai Feng Wang
Keyword(s):  
Electric Field ◽  
High Frequency ◽  
New Technology ◽  
Cooling Water ◽  
Treatment Technology ◽  
Circulating Water ◽  
Scale Inhibition ◽  
High Frequency Electric Field ◽  
Circulating Cooling Water ◽  
Frequency Electric Field

Nowadays the treatment way of circulating cooling water is mainly confined in the scale removal direction and effect is limited, but in scale inhibition direction few reports. To solve this problem, the study proposed a new technology of high-frequency electric field-colloid-electric adsorption. Simulation circulating water was treated by the self-made electrolytic system in high frequency DC electric field, obtained the optimum conditions by adjusting different electrochemical parameters, and analysed the mechanism of the process. The result suggests that this process has excellent scale inhibition, it reflected the good descaling effect by soften and peel the aging scale, it also can effectively change the crystal morphology, it is convenient, efficient and environment friendly.

Research and Discussion on Electro-Magnetic Treatment in Circulating Cooling Water of Power Plant

2013 ◽  
Vol 732-733 ◽  
pp. 382-386
Author(s):  
Ni Zhang Xiao ◽  
Nan Zhang Xiao ◽  
Long Wu Wen ◽  
Rui Ju Zhao ◽  
Chun Lei Zhang
Keyword(s):  
Power Plant ◽  
Chemical Treatment ◽  
Power Plants ◽  
Water System ◽  
Cooling Water ◽  
Magnetic Treatment ◽  
Treatment Technology ◽  
Cooling Water System ◽  
Circulating Cooling Water ◽  
Electro Magnetic

The effects of anti-scale, anti-corrosion and disinfection of circulating cooling water with electro-magnetic treatment and chemical treatment in the laboratory are compared. The applications of electro-magnetic treatment in power plants are summarized and discussed. The results of both experiments and applications in power plants show that the electro-magnetic treatment can be used in particular conditions, but the development of electro-magnetic treatment technology is immature. This technology used in circulating cooling water system in power plants should be further proved by more experiments and field applications.

Recirculating Cooling Water Treatment Process of Low Carbon & Environmental Protection in Fossil-Fueled Power Plant

2011 ◽  
Vol 356-360 ◽  
pp. 2182-2185 ◽  
Author(s):  
Shu Hao Huo ◽  
Xue Jing Zheng ◽  
Zhao Qin Ma
Keyword(s):  
Water Treatment ◽  
Power Plant ◽  
Environmental Protection ◽  
Treatment Process ◽  
Mine Drainage ◽  
Cooling Water ◽  
Low Carbon ◽  
Design Concepts ◽  
Water Treatment Process ◽  
Operation Results

The recirculating cooling water treatment process of low carbon & environmental protection adopts advanced design concepts of passive and energy saving and emission reduction. This process will be used widely in fossil-fueled power plant, which uses municipal reclaimed water or coal mine drainage. The operation results show that the effluent quality is stable, the concentration ratio is higher and the recirculating cooling water quality is better than the design criteria. It meets the safety and economic operation of units.

Application of Electrosorption Desalination Technology in Coking Wastewater Treatment

2012 ◽  
Vol 573-574 ◽  
pp. 516-520
Author(s):  
Nan Zhang ◽  
Gai Feng Xue ◽  
Pu Liu ◽  
Li Na Wang
Keyword(s):  
Water Treatment ◽  
Ph Value ◽  
Removal Rate ◽  
Cooling Water ◽  
Economic Benefits ◽  
Coking Wastewater ◽  
Toxic Substances ◽  
Treatment Technology ◽  
Circulating Cooling Water ◽  
Water Treatment Technology

Coking wastewater is generated from metallurgy industry and it contains many highly toxic substances. Because the coking wastewater would bring about severe environmental pollution, it is best to reuse it as circulating cooling water. However, there are large quantities of ions in coking wastewater, which would cause serious corrosion to the pipe and the devices in the process of recycling. Therefore, desalting techniques are necessary for the reused of coking wastewater. Electrosorption technique (EST), as a new type of water treatment technology, can meet the economic benefits of water treatment technology. It also can achieve better water quality and reliability standards which have never been achieved before. In this paper, a new electrosorption device was invented and it was used for desalting of coking wastewater. The main parameters affecting the electrosorption of ions including voltage, electrosorption time, pH value, temperature and electric current have been investigated in detail. Under the optimized experimental condition, after electrosorption process, a salt removal rate of 75% was obtained. The quality of effluent could satisfy the criterion of industrial circulating cooling water (GB 50050-2007) and could be reused as the circulating cooling water in coking plant.

Dynamic Simulation Test on Scale Inhibition of Secondary Effluent of Sewage Treatment Plant Directly Reused in Power Plant Circulating Cooling Water System

2013 ◽  
Vol 473 ◽  
pp. 125-128
Author(s):  
Wen Qiu ◽  
Yi Zhao
Keyword(s):  
Power Plant ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Water System ◽  
Cooling Water ◽  
Secondary Effluent ◽  
Inhibition Effect ◽  
Scale Inhibition ◽  
Circulating Cooling Water

Secondary effluent of sewage treatment plant directly reused in power plant circulating cooling water system was the main cause of scale inhibition in the system.Facing this serious scaling problem,static scale inhibition experiment was carried out to filter out the efficient compound formulation.Corrosion inhibition performance by rotary coupon experiment was studied.Scale and corrosion inhibition effect under the field condition by homemade dynamic simulation experiment and the environment toxicity were tested. The result showed that this water treatment agent gain the high scale and corrosion inhibition effect, with low phosphorus,non-toxic,friendly to environment.

Reviews of Generator Stator Cooling Water Treatment Technology

2015 ◽  
Vol 737 ◽  
pp. 574-578
Author(s):  
Sheng Ping Fan ◽  
Rui Yuan Zhang ◽  
Shu Nan Cao ◽  
Shi Nian Liu
Keyword(s):  
Water Treatment ◽  
Water System ◽  
Cooling Water ◽  
Control Technology ◽  
Water Control ◽  
Treatment Technology ◽  
Cooling Water System ◽  
Water Treatment Technology ◽  
Generator Stator ◽  
At Home

Discuss the corrosion factors of generator stator cooling water system (SCWs) in detail. Summarize the development and application status of generator stator cooling water control technology at home and abroad.

Cost-Efficient De-Bottlenecking of Produced Water Treatment Systems through the Application of a Single Technology, Eliminating the Need for Hydrocyclones and Degassing Drums

2021 ◽  
Author(s):  
Steinar Asdahl ◽  
Johann Jansen van Rensburg ◽  
Martin Einarson Waag ◽  
Rune Glenna Nilssen
Keyword(s):  
Water Treatment ◽  
Produced Water ◽  
Separation Efficiency ◽  
Water System ◽  
Treatment Technology ◽  
Two Stage ◽  
Water Separation ◽  
Design Capacity ◽  
New Process ◽  
Produced Water Treatment

Abstract Traditionally, produced water from production separators is handled by multiple steps and different technologies in order to meet the required quality for either discharge or reinjection of the water. The development of the latest Compact Flotation Unit (CFU) technology has unlocked the potential for savings on cost, complexity, footprint and weight for the produced water treatment system. The developed CFU technology has proven applicable through field testing as a single treatment technology for reducing Oil-in-Water (OiW) content directly from tie-in at separator and still meet stringent requirements for outlet OiW quality. Field tests were conducted with inlet OiW concentration ranging from 200-2000 ppm, achieving results in the range 2.5 to 21 ppm only with a two-stage latest generation CFU. Compared to a traditional produced water system setup consisting of de-oiling hydrocyclones and a horizontal degassing vessel, the savings in footprint and operational weight is estimated to 54 % and 53 % respectively utilizing a two-stage CFU for a system with a design capacity of 76.000 BWPD. Furthermore, the development of the latest generation CFU technology has enabled the retrofit concept, incorporating the developed CFU internals into existing gravity separation based produced water vessels, converting them to more efficient flotation vessels with increased capacity. For brownfield and debottlenecking applications, operators are challenged by increasing water cut from maturing wells, and as a result exceeding the facilities design capacity for produced water treatment. This challenge is often further reinforced by increasingly stricter environmental legislation for OiW content for discharge or re-injection. The retrofit concept will offer a highly cost-, footprint- and weight-efficient solutions to these challenges utilizing existing vessels. Benefits of the retrofit concept: Bring proven and unique performance of the technology to other produced water separation vessels helping the operators improve the separation efficiency and increase throughput while meeting discharge requirementsShort execution time compared to installation of new process equipmentLow cost compared to installation of new process equipmentUtilization of existing equipment saves valuable footprint.

scholarly journals A Process for Evaluating Adverse Environmental Impacts by Cooling-Water System Entrainment at a California Power Plant

2002 ◽  
Vol 2 ◽  
pp. 81-105 ◽  
Author(s):  
C.P. Ehrler ◽  
J.R. Steinbeck ◽  
E.A. Laman ◽  
J.B. Hedgepeth ◽  
J.R. Skalski ◽  
...  
Keyword(s):  
Power Plant ◽  
Environmental Impacts ◽  
Environmental Protection Agency ◽  
Transport Model ◽  
Larval Fish ◽  
Larval Mortality ◽  
Water System ◽  
Cooling Water ◽  
Water Quality Control ◽  
Plant Effects

A study to determine the effects of entrainment by the Diablo Canyon Power Plant (DCPP) was conducted between 1996 and 1999 as required under Section 316(b) of the Clean Water Act. The goal of this study was to present the U.S. Environmental Protection Agency (EPA) and Central Coast Regional Water Quality Control Board (CCRWQCB) with results that could be used to determine if any adverse environmental impacts (AEIs) were caused by the operation of the plant’s cooling-water intake structure (CWIS). To this end we chose, under guidance of the CCRWQCB and their entrainment technical working group, a unique approach combining three different models for estimating power plant effects: fecundity hindcasting (FH), adult equivalent loss (AEL), and the empirical transport model (ETM). Comparisons of the results from these three approaches provided us a relative measure of confidence in our estimates of effects. A total of 14 target larval fish taxa were assessed as part of the DCPP 316(b). Example results are presented here for the kelp, gopher, and black-and-yellow (KGB) rockfish complex and clinid kelpfish. Estimates of larval entrainment losses for KGB rockfish were in close agreement (FH is approximately equals to 550 adult females per year, AEL is approximately equals to 1,000 adults [male and female] per year, and ETM = larval mortality as high as 5% which could be interpreted as ca. 2,600 1 kg adult fish). The similar results from the three models provided confidence in the estimated effects for this group. Due to lack of life history information needed to parameterize the FH and AEL models, effects on clinid kelpfish could only be assessed using the ETM model. Results from this model plus ancillary information about local populations of adult kelpfish suggest that the CWIS might be causing an AEI in the vicinity of DCPP.

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