Progress and Prospects of Oily Sludge Treatment Technology at China and Abroad

2013 ◽  
Vol 807-809 ◽  
pp. 1422-1426
Author(s):  
Fan Liu ◽  
Cheng Tun Qu ◽  
Bo Yang ◽  
Jin Li Xue ◽  
Meng Yang Li

A large number of waste oil and sludge were generated during mining and processing. Untreated Sludge directly discharged into environment will lead to critical human health harm and serious environment pollution. As one of the petrochemical process major pollutants, treatment of oil sludge processing, at home and abroad, has been trying to study. Summary of development status and prospect research of oil sludge treatment technology, combining characteristics of the oily sludge, in domestic and foreign were made in this article.

2013 ◽  
Vol 807-809 ◽  
pp. 1402-1408
Author(s):  
Qian Wang ◽  
Cheng Tun Qu ◽  
Fang Ling Qin

The process of oil extraction and processing produces large quantities of oily sludge, which is complex and unwieldy. It has become the main pollution factor of affecting oil production. So it is necessary to look for a reasonable treatment technology of oily sludge .This document introduces different sludge treatment methods and technological process, highlights the pyrolysis principle and test methods, and looking forward to the development of oily sludge treatment process.


2013 ◽  
Vol 838-841 ◽  
pp. 2667-2672 ◽  
Author(s):  
Hui Li ◽  
Shao Fu Song ◽  
Cheng Tun Qu ◽  
Qian Xie ◽  
Bo Yang

Oily sludge is a mixture of oil and sludge, produced during the process of crude oil production and gathering, contains crude oil, heavy metal and organic toxic and harmful substances, and with the characteristics of high moisture content, poor liquidity and big volume. The recycling and disposal of it has been one of the most important aspects of enviromrntal protection in oil industry. In this paper the origin nature and hazards of oil sludge were described, the existing oily sludge treatment process from the aspects of quenched separation, heat treatment, extraction, biological treatment were introduced, and looks forward to the development of the oil sludge treatment technology.


Author(s):  
Xuening Li ◽  
Fusheng Zhang ◽  
Baoshan Guan ◽  
Jianghe Sun ◽  
Gongqing Liao

2020 ◽  
Vol 38 (5) ◽  
pp. 554-566 ◽  
Author(s):  
Rebecca Solinger ◽  
Gavin P Grant ◽  
Grant C Scholes ◽  
Cody Murray ◽  
Jason I Gerhard

Growing stockpiles of waste oil sludge (WOS) are an outstanding problem worldwide. Self-sustaining Treatment for Active Remediation applied ex situ (STARx) is a treatment technology based on smoldering combustion. Pilot-scale experiments for the STARx Hottpad prove this new concept for the mobile treatment of WOS mixed intentionally with sand or contaminated soil. The experiments also allowed for the calibration and validation of a smoldering propagation numerical model. The model was used to systematically explore the sensitivity of Hottpad performance to system design, operational parameters, and environmental factors. Pilot-scale (~1.5 m width) simulations investigated sensitivity to injected air flux, WOS saturation, heterogeneity of intrinsic permeability, and heterogeneity of WOS saturation. Results reveal that Hottpad design is predicted to be successful for WOS treatment across a wide range of scenarios. The operator can control the rate of WOS destruction and extent of treatment by increasing the air flux injected into the bed. The potential for smoldering channeling to develop was demonstrated for the first time. Under certain conditions, such as WOS saturations of 80%, high heterogeneity of WOS saturations, or moderate to high heterogeneity of soil permeability, smoldering channeling was predicted to accelerate to the point that remedial performance was degraded. Field-scale simulations (~10 m width) predicted successful treatment, with WOS destruction rates an order of magnitude higher than the pilot-scale and treatment times increasing only linearly with bed height. This work is a key step toward the design and effective operation of field STARx Hottpad systems for eliminating WOS.


2017 ◽  
Vol 6 (1) ◽  
pp. 1 ◽  
Author(s):  
Ram Proshad ◽  
Tapos Kormoker ◽  
Md. Saiful Islam ◽  
Mohammad Asadul Haque ◽  
Md. Mahfuzur Rahman ◽  
...  

Plastics are used widely everywhere in our life and without plastic, modern civilization would indeed look very diverse. This study focuses on the toxic effects of plastic on human health and environment and possible consequences of health risk assessment in Bangladesh. Plastics are essential materials in modern civilization, and many products manufactured from plastics and in numerous cases, they promote risks to human health and the environment. Plastics are contained many chemical and hazardous substances such as Bisphenol A (BPA), thalates, antiminitroxide, brominated flame retardants, and poly- fluorinated chemicals etc. which are a serious risk factor for human health and environment. Plastics are being used by Bangladeshi people without knowing the toxic effects of plastic on human health and environment. Different human health problems like irritation in the eye, vision failure, breathing difficulties, respiratory problems, liver dysfunction, cancers, skin diseases, lungs problems, headache, dizziness, birth effect, reproductive, cardiovascular, genotoxic, and gastrointestinal causes for using toxic plastics. Plastics occur serious environment pollution such as soil pollution, water pollution, and air pollution. Application of proper rules and regulations for the production and use of plastics can reduce toxic effects of plastics on human health and environment.


2020 ◽  
Vol 58 (5A) ◽  
pp. 190
Author(s):  
Khoi Diep Ngoc Vo

The paper presents the results of the evaluation of sludge decomposition ability from a municipal wastewater treatment plant by an aerobic process on the Mishimax device (MK-50). The principle of the process was based on the microorganisms activated by the bulking agent as a bio-carrier to decompose organics composition and increase the evaporation by heating. An average sludge amount of 30 kg/day was added into MK-50, with the moisture of 80.2 – 83.6 %, with the C/N ratio of around 22 - 35. The heated air with 50 oC in temperature was supplied into a rotary bioreactor during the experiment period. After every 30 days of fermentation, the results from three experiments showed that the sludge volume decreased from 83 - 85 %, the stabilization efficiency by dry weight of sludge reached at 32 - 39 %, corresponding to the average decomposition rate is 12 g/kg.day, the evaporation efficiency was more than 95 %. Sludge after stabilization process had the colour of brown-grey, pH of about 6.5 - 7.2, the humus particles with the size of less than 1 mm accounted for over 60 %, the evaluation of product indexes according to nutrients like TOC, T-N meet the standard of 10TCN 526:2002/BNN&PTNT. The stabilized sludge was used for growth plant test and compared to a market organic fertilizer under the same conditions of cultivation and monitoring. The initial results of this study were a basis for research of sludge treatment technology approaches to waste recycling orientation in urban areas in Vietnam.


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