Xi’an KOSUN Environmental Engineering Co., Ltd. focuses on development and services of complete technologies and equipment of sludge and Tunnel muck reduction and resource utilization.Our Tunnel muck treatment System had been successful used in shenzhen,China.
Tunnel muck should be considered as a valuable resource: if it is managed and treated correctly, it can be used for different purposes. This would lead not only to environmental benefits but also those of an economic nature. This work is part of the REMUCK project and it has the purpose of evaluating the effects of different treatments on different types of excavated rock. Five case studies have been selected and, of these, two were excavated with TBM (the Torrent-La Thuile tunnel and the Brennero tunnel), one with EPB (the Turin underground railway) and two using traditional excavation methods (Turin underground railway station and the Omegna tunnel). Tests have been carried out in the laboratory on both the muck in its natural state and on muck treated in two different plants (a mobile plant and a fixed plant) in order to characterise the aggregates from the shape and mechanical resistance points of view (according to EN 933-3 and EN 1097-2, respectively). The results of these tests have been compared with the threshold values foreseen in a muck management plan for a tunnel in Switzerland in order to verify the quality of the treatments the recycled aggregates were subjected to. This has made it possible to evaluate the suitability of the treatments, on the basis of the foreseen types of use, and to propose alternative working schemes for the nonconforming cases.
Italy is one of the first countries in the world as far as the number of tunnels is concerned. Many new tunnels are currently under construction or have been planned (300 km of railway tunnels and 150 km of road tunnels, some more than 500 m long, but also metropolitan tunnels). Tunnels are usually excavated in mountain areas of great value: the longest ones in Italy are in fact located in the Alps or in the Apennine mountain range. Approach: If the re-use of excavated material is not taken into account each time a tunnel is excavated, new quarries are required to obtain aggregates for cement, asphalt and concrete and new landfills are created, to allocate the tunnel muck. If the planned tunnel is large (in size and length), numerous quarries and landfills can be expected in the vicinity of the tunnel, with a consequent considerable amount of environmental damage. Results and Conclusion: For these reasons and not only for the obvious economic reasons, it is necessary to develop all the technologies that make the re-use of muck possible as an aggregate for cement and asphalt and as material for road and railways embankments.
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Pilling Slurry Separation has always been a problem in engineering construction. In the process of piling, there will produce a lot of mud, the mud is suspension liquid contains a certain amount of fine clay particles, which has a certain viscosity and difficult to separation for a long time.
Now how can we treatment these mud from piling? There are four Pilling Slurry Separation Methods:
1.Pilling Slurry Separation Plant: This method is to use the special pile mud treatment equipment to separate the mud from slurry water. Such as piling mud centrifuge, piling mud dewatering machine, piling mud separator, piling mud curing equipment. The biggest advantages of this method is convenient and effort. Sludge treatment efficiency, more environmental protection.
Pilling Slurry Separation Method of Sedimentation basin : On construction site, we can construct one sedimentation basin. First, we need to discharge sewage into sedimentation basin. Removing suspended solids, oil material and Neutralization processing, after detection to achieve discharge standard, we can discharge into the river.
3.Pilling Slurry Separation Method of Natural dehydration: In the process of drilling perfusion, we can use shaker screen to seprate small gravel, sand and other solid particles from pile mud. then discharge it into mud pit and sufficient to precipitate until the natural dehydration and solidification.
4.Pilling Slurry Separation Method of Flocculation Treatment: For waste mud water, we can add flocculants into it. Because the mud is suspension liquid contains a certain amount of fine clay particles, the macromolecule flocculant is a kind of water-soluble polymer,When mixed with mud water, it can destroy the stability of the slurry water in order to settlement of clay particles from the water condensed quickly.
Different from China, developed countries abroad have long realized that sludge treatment and disposal is an indispensable link in the process of sewage treatment. They have made clear provisions on the objectives of sludge treatment and disposal in terms of laws and policies, and ensured the implementation through a series of policies.
In sludge treatment of the United States, in addition to the treatment of generated sludge, the whole sewage treatment system and sludge treatment system are regarded as an organic whole. In sewage treatment, sludge co-treatment is realized. As early as 1998, the European Union legislated to ban the Marine discharge of sludge, and the sanitary landfill of sludge should be gradually banned. The annual sludge capacity of 50,000 sewage treatment plants in EU countries is 40 million tons, and more than 50% of the sludge has been treated with anaerobic digestion, among which the anaerobic digestibility of sludge in Britain reaches 66%.
It can be seen that policy and technology are still effective ways to improve China’s sewage treatment capacity. Technical methods: to further accelerate the localization of sludge treatment and disposal equipment, improve the management and operation level of sewage treatment plants. In terms of policy, effectively coordinate the management of sludge treatment and disposal involving multiple units; More binding mandatory sludge discharge standards; Actively support the development and application of new sludge treatment technology; To encourage investment in sludge treatment by water plants. 66%.
Although the sewage treatment capacity, treatment capacity and treatment rate are all improving, it does not mean that the sewage treatment effect is improving simultaneously. Therefore, under the big theme of improving the quality and efficiency of sewage today, the sewage treatment industry still has a lot of things to do.
In addition, for water enterprises in the formulation of corporate strategy, the assessment objectives as a starting point. The first thing an enterprise needs to consider is whether the assessment is the growth of scale or the growth of business revenue, and the path is different under different standards. Some companies are thinking about scale expansion and how much future assets they would have if they paid a certain price per ton of water.
In terms of sewage discharge standards, statistics are carried out from the two dimensions of the current sewage discharge standard and the functional target of the receiving water body. Beijing standard B will be implemented for about 60% of projects, and Beijing standard A will be implemented for around 20.Beijing has relatively special requirements in terms of standards due to some problems such as reuse of tailwater and supplement of landscape water. In Tianjin project, landmark B accounts for 37%, while landmark A accounts for 39%.In Hubei, Shanghai and Guizhou, grade A is dominant, but grade B in Hubei and Guizhou also has A certain proportion. It is not recommended to use the current emission standards to push back the expansion of enterprises in the market. There is still a certain proportion of sewage treatment projects in the wood powder province to implement the level I B standard, but it does not mean that it has a large need for bidding, so it can only meet the discharge standard. In addition, there are some special places, such as Anhui, which have special standards due to Chaohu lake and requirements for watershed management in the great protection of the Yangtze river.
Kosun Environmental Engineering oil sludge treatment scheme 1:Air flotation scheme for oil sludge recovery and separation system. The application of the air flotation scheme in the oil sludge recovery and separation system can effectively realize the separation of oil, water and mud, and recover the reusable oil products in the sludge. At the same time, targeted chemical agents are used to reduce the oil content of the discharged sludge, with the lowest oil content of 0.5%, meeting the environmental protection emission standard.
Kosun Environmental Engineering oil sludge treatment scheme 2:Skid-mounted oil sludge treatment system. On the basis of introducing advanced separation technology from Europe and combining with domestic military manufacturing team, Kosun Environmental Engineering is specialized in manufacturing high-speed horizontal screw centrifuges.With the development concept of combining independent research and introduction, the company strives to make a breakthrough in the application function of centrifuge physics, so as to solve the secondary pollution problem caused by chemical treatment.Company research and development of special oil sludge, dirty oil, aging oil two phase and three phase horizontal screw centrifuge won the unprecedented good results in production practice. The various indicators are better than national standards, with a core of the special oil sludge horizontal screw centrifuge treatment system is fully operational, it will reduce the labor intensity of users, reduce the production cost of the using enterprise, at the same time can also provide cost-effective manufacturing in China for the international market.
Kosun Environmental Engineering oil sludge treatment scheme 3:Analytical processing technology of electric radiation and heat. Kosun Environmental Engineering analytical processing technology of electric radiation and heat is mainly composed of “sludge pretreatment + analytical processing of electric radiation and heat + water treatment” and other processes.In order to meet the requirements of “reduction” of the factory, this scheme mainly realizes reduction of oily sludge through the analytical processing technology of electric radition and heat, which make the liquid phase reduction rate over 94%.
Application range of Kosun Environmental Engineering oil siudge treatment： 1.Drilling mud 2.Field oil 3.Oil field drilling oil base mud deoiling treatment 4.Waste machinery lubricating oil and emuision oil treatment 5.Fracturing fluid and flowback effluent 6.Complex mixed oil sludge from industrial oil sludge garbage pit 7.Pelagic tanker bilge oil sludge 8.Oil refinery water treatment oily scum and oily bottom sludge and so on 9.Oil sludge at tank bottom of oil field union station 10.Sediment isolation layer in natural sedimentation and dehydration of oil field union station 11.Slag containing sludge from ship fuel oil and lubricating oil separator 12.Coal tar is extracted from coal chemical industry 13.Aging oil of oil field union station 14.Oil-bearing scum produced during water treatment in oil field 15.Oily sludge treatment in oil chemical plants 16.Other Mineral-bearing oil sludge sand treatment
KOSUN is a professional company that provides solid-liquid separation products and integrated solutions to solid waste disposal in the fields of energy conservation and environment protection, and focuses on development and services of complete technologies and equipment in sludge reduction, harmlessness and resource utilization. The sludge treated by KOSUN vertical centrifuge can be used as various resources in the following fields:
1. Agricultural resource utilization of sludge If the sludge is used for agricultural purposes, it has the advantages of low operating cost, low energy consumption and low investment, and the organic part in sludge can be converted into the modifier component in the soil, so this utilization way is taken as the most promising disposal method.
2. Building materials utilization of sludge
2.1. Cementitious materials utilization of sludge For sludge, it often contains more ash, especially in the treatment of sludge in wastewater by coagulation method, which contains a lot of Fe and Al components, and can be used as additives of building materials.
2.2. Sludge ceramsite For lightweight ceramsite, it is usually used as a flower covering material or as a concrete aggregate and roadbed.
2.3. Sludge brick Relevant researches show that sewer sludge can be used to make ecological bricks used in construction. This kind of brick is actually made by the following process: 10% sludge is mixed into the clay and then fired at 900°C, which can optimize the effect.
3. Animal feed utilization of sludge
Sludge contains lots of corresponding substances with many useful values, such as ash content ratio of 26.1% to 46.3%, fatty acids of 0 to 3.5%, and crude protein of 28.4% to 40.8%. Therefore, it can be treated as feed protein.
4. Sludge as fuel
The sludge itself is rich in organic matter. After low-temperature carbonization of sludge, the calorific value is equivalent to lignite, so the sludge can be used as fuel with a low calorific value.
If the sludge is not treated and is directly discharged into the environment, it will be seriously harmful to the surrounding environment. After the sludge is treated harmlessly, stabilized and reduced in volume, it can be used as a valuable resource in many fields.
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Service orientation: Regard the realization of service promise as the destination; implement the concept of high-quality,high-taste, high-efficiency and all-around-way service in the process from the design, manufacturing,management to the sale of products.
Service promise:From the design, we will do every step carefully to maximize clients satisfaction.
1.Pre-sale service: Act as a good adviser and assistant of clients; enable them to get rich and generous returns on their investments. (1) Select equipment model; (2) Design and manufacture products according to clients’ special requirement; (3) Train technical personnel for clients;
2.Service during the sale: Respect clients; devote ourselves to improving the total value of clients. (1) Pre-check and accept products ahead of delivery; (2) Help clients to draft solving plans.
3.After-sale service: Provide considerate services to minimize clients’ worries. (1) Assist clients to prepare for the first construction scheme; (2) Install and debug the equipment; (3) Train the first-line operators on site; (4) Examine the equipment regularly; (5) Take initiative to eliminate the troubles rapidly at site; (6) Distribute the guarantee fittings door-to-door; (7) Provide perfect service; (8) Provide technical exchanging; (9) Provide maintenance for big items.
On April 1, the drilling footage of the New Year’s production capacity of the No. 6 Gas Production Plant, Changqing Oilfield Company exceeded 100,000 meters, and the time to reach this length was 28 days earlier than the year of 2018.
In order to ensure the quality and efficiency of production and construction, as well as high-quality and rapid development, the No. 6 Gas Production Plant has continuously deepened geological research and promoted technological innovation. On March 6, the first analysis while drilling and deployment disclosure meeting this year preliminarily defined the overall plan for the annual production and construction deployment, and carried out the geological analysis while drilling according to the implementation effect, and timely optimized and adjusted the deployment. Up to now, a total of 27 additional coordinates have been deployed, 11 production and construction favorable zones have been implemented, and 339 effective coordinates have been prepared.
At the same time, relying on the special projects and key technologies of Changqing Oilfield Company, the “twice-drilling” technology and the “small borehole” test were actively promoted. On March 8, the gas well with twice-drilling technology in the Gaoqiao area was successfully drilled. The second section to the finished drilling only took 11.21 days, which was 30% higher than the drilling speed of a conventional well with the same depth.
On March 21, the reporter learned from China National Offshore Oil Corporation (CNOOC) that the Company released its 2018 annual performance report. CNOOC steadily increased oil and gas reserve and production. The annual net oil and gas production reached 475 million barrels of oil equivalent, and continued to maintain cost competitive advantages. The main cost of barrel oil continued to decline year on year, creating a record of five consecutive years of cost reduction. By the end of 2018, the company’s net proven reserves reached 4.96 billion barrels of oil equivalent, hitting a new record high, and the resource base for sustainable development in the future will be more solid.
In the next step, CNOOC has formulated a strategy for deepwater development in the South China Sea. It plans to build a deepwater oilfield cluster in the eastern part of the South China Sea in the next few years, and build the first 100 billion cubic meters deepwater gas field discovered by China in the western South China Sea, and continue to increase investment in exploration and development, deepen the potential of oil and gas resources in the South China Sea, and enhance the comprehensive support capability of oil and gas.
The International Energy Agency (IEA) estimates that fuel oil supply is expected to face an acute shortage before 2020 when sulfur limit for marine fuel is set due to upgrade in refinery and a decline in medium and heavy crude oil production. According to the new regulations of the International Maritime Organization (IMO), by January 2020, the highest proportion of marine fuel sulfur will be reduced from the current 3.5% to 0.5%.
The IEA says, since November last year, due to the OPEC and non-OPEC (such as Russia) production reductions, the global production of medium and heavy crude oil has dropped by 1.4 million barrels per day, reducing the residual fuel oil market by 500,000 barrels per day. In the fourth quarter of last year, global demand for residual fuel oil was 6.74 million barrels per day, declining by 2.2% year-on-year.
The IEA states that the reduction in global crude oil supply is narrowing the profit margin of complex refineries comparing with simpler ones, which in turn leads to the disappearance of advantages of complex refineries. The increasing strengthening of fuel oil cracking in the past five months has made upgrades less feasible.