Sludge production and management processes: case study in China

2006 ◽  
Vol 54 (5) ◽  
pp. 189-196 ◽  
Author(s):  
D.J. Lee ◽  
L. Spinosa ◽  
P.J. He ◽  
T.B. Chen

In 2010, the sewage sludge production rate will be 178,500 t dried solids (ds) for Beijing and 294,000 t-ds for Shanghai, respectively. Beijing adopts a centralized system to stabilize 78% of her sludge in three rural Stabilization Centres. Aerated composting technique will be used. Shanghai on the contrary decentralizes the management plan to treat the sludge on site. Diverse treatment trains, such as aerobic/anaerobic digestion, drying, incineration, and composting will be applied. Production rate, treatment plan, and the associated costs, energy consumption, carbon dioxide emission, and risk assessment for heavy metals and pathogens on human health were evaluated in this report for sludges yielded in Beijing and Shanghai, China.

2016 ◽  
Vol 61 (3) ◽  
pp. 587-600
Author(s):  
Paweł Wrona ◽  
Józef Sułkowski ◽  
Zenon Różański ◽  
Grzegorz Pach

Abstract Greenhouse gas emissions are a common problem noticed in every mining area just after mine closures. However, there could be a significant local gas hazard for people with continuous (but variable) emission of these gases into the atmosphere. In the Upper Silesia area, there are 24 shafts left for water pumping purposes and gases can flow through them hydraulically. One of them – Gliwice II shaft – was selected for inspection. Carbon dioxide emission with no methane was detected here. Changes in emission and concentration of carbon dioxide around the shaft was the aim of research carried out. It was stated that a selected shaft can create two kinds of gas problems. The first relates to CO2 emission into the atmosphere. Possible emission of that gas during one minute was estimated at 5,11 kg CO2/min. The second problem refers to the local hazard at the surface. The emission was detected within a radius of 8m from the emission point at the level 1m above the ground. These kinds of matters should be subject to regular gas monitoring and reporting procedures.


2020 ◽  
Vol 9 (6) ◽  
pp. 152-155
Author(s):  
Saiyad Shah Alam ◽  
Waseem Ahmad ◽  
Md Rizwanullah ◽  
Mohammad Muzammil

Introduction: A wound can be defined as the discontinuity in skin or mucus membrane. Healing is nothing but neogranulation in the depth and neo-epithelialization at the edges of the wound which ultimately results in the complete repair of such discontinuity. This case report deals with a patient of traumatic large wound at the heel who receives Unani management for wound healing. He was diagnosed as avulsion of pad of right heel with type-II diabetes mellitus. The treatment plan included mechanical debridement, cleaning with solution of alum powder (Sufuf-e-zaaj/alusol) and dressing with Marham-e-raal. The patient was advised to continue oral hypoglycemic agent with subcutaneous injection of insulin. On 85th day of treatment, the wound was healed by almost 98% and on subsequent 1st and 2nd follow up, each with a gap of 15 days, no recurrence of wound was recorded. Methodology: A male patient of traumatic wound was taken into study and given Unani management plan which included debridement, cleaning and washing with solution of Alum powder (Alusol)/ or, in Unani, Sufuf-e-zaaj and dressing of the wound with Marham-e-raal with full aseptic precautions for a period of about 3 months. Discussion: Wound healing is credited to muhallil(anti-inflammatory), daf’eta’ffun (antimicrobial), mujaffif (desiccant) and mundamil (wound healing) properties of Marham-e-raal due to presence of several phytoconstituents like camphor, linalool, borneol, cineole, terpenoids, Bergenin, Phenols and flavonoids, hopeaphenol, Oligostilbenoids, Monoterpenes, kaempferol, Quercetin and Catechin. Result: The wound completely healed at the end of 3 months with no recurrence noted on the 15th day of follow up after complete healing.


2021 ◽  
Vol 9 ◽  
Author(s):  
Elizabeth J. Abraham ◽  
Farah Ramadan ◽  
Dhabia M. Al-Mohannadi

Growing climate change concerns in recent years have led to an increased need for carbon dioxide emission reduction. This can be achieved by implementing the concept of circular economy, which promotes the practice of resource conservation, emission minimization, and the maintenance of sustainable revenue streams. A considerable amount of carbon dioxide emissions is a consequence of stationary sources from industrial processes. These emissions can be reduced using carbon capture utilization and storage (CCUS) or reduced at source by using emission free renewable resources. The method developed within this work uses mixed integer linear programming (MILP) to design sustainable clusters that convert seawater (including waste brine), air, and waste carbon dioxide emissions to value-added products with sunlight as the main energy source. In this way, circular economy is employed to minimize fresh resource consumption and maximize material reuse. The potential of this work is demonstrated through a case study, which shows that an industrial park may be profitable while adhering to strict emission and material constraints.


2018 ◽  
Vol 171 ◽  
pp. 05001
Author(s):  
Avram Lazăr ◽  
Cristescu Tudora ◽  
Stoica Monica Emanuela

The weather changes we are currently witnessing, characterised by dynamism and extreme phenomena, are the direct and indirect result of human activities which are determining the global atmosphere change in composition. The paperwork follows the evaluation and comparison of carbon dioxide emission coefficient in case of liquid oil fuels burning. The calculus model used for the carbon dioxide emission coefficient evaluation has been developed based on mathematical models from specific publications. It was applied in the case study based on data from specific literature. The results obtained following the evaluation allowed certain comparisons in the field of carbon dioxide emissions in case of the complete burning of certain fluid hydrocarbons use in industry.


2016 ◽  
Vol 139 ◽  
pp. 139-146 ◽  
Author(s):  
Gil Won Kim ◽  
Seung Tak Jeong ◽  
Gun Yeob Kim ◽  
Pil Joo Kim ◽  
Sang Yoon Kim

2013 ◽  
Vol 61 ◽  
pp. 318-322 ◽  
Author(s):  
S.M. Abolarin ◽  
A.O. Gbadegesin ◽  
M.B. Shitta ◽  
A. Yussuff ◽  
C.A. Eguma ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document