Regarding the salt sludge treatment issues and salt sludge analysis in chlor-alkali plants, please discuss together.
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This post was last edited by sunjl1981 on 2013-1-6 19:58 Recently, our company encountered a problem. Salt mud disposal must be done in a place that has been confirmed by local people and the local environmental protection department before it can be landfilled. Now no place is willing to accept our salt mud. Although we are in a * * The laboratory conducted a salt mud test and determined it to be the second category of general solid waste. Don't know what to do now? Experts please advise. Thanks. This post was last edited by yzhms on 2009-3-20 16:09 ] # , , &
Test report sample name: Salt Mud Report Date: February 22, 2009 H2O SiO2 Al2O3 Fe K Na Ca Mg Cl S Unit of measurement % 44.42 7.80 1.18 0.71 0.18 19.32 4.89 15.00 11.21 1.13 Cr Ni Cu Zn Cd Pb Cr6+ PH Unit of measurement μg/g 16.3 9.40 14.2 31.4 0.39 34.3
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Our factory has a brick-making workshop, and all our solid waste is used to make standard building bricks, including salt mud.
It’s a big problem, let’s cut it from the source, such as using imported salt, etc.
Please tell me about the 4th floor. What material are the bricks made of? What brick-making process is used? How much salt mud to add?
Salt mud is indeed a big problem. With the permission of the people, it is an unwritten rule. It makes no sense, but* * This is how it is stipulated, because * * This move removes responsibility and throws all problems to the companies. If the people don't agree, the companies will pay the people to agree. In fact, there is no way to deal with the salt mud at all.
Salt mud is indeed a long-standing problem. With the increase in production, the treatment of salt mud is becoming more and more problematic. Here, the discharged salt mud is mixed with sand and soil in the drying pool, and finally hauled away by vehicle. This post was last edited by yzhms on 2009-3-25 22:37 ]
The comprehensive utilization of salt mud is a long-term concern of chlor-alkali manufacturers. There has been some progress in recent years: Some manufacturers have changed the practice of direct discharge and use pressure filtration to recover brine. The salt mud filter cake is used for filling soil or other treatments. There are also research reports on using salt mud to bake cement and press inorganic fiber boards. As for the chemical treatment of salt mud to recover the active ingredients to produce chemical products, it is an issue of interest to many chemists. For example, as early as the 1970s, there were reports of using salt mud to produce light magnesium carbonate. However, it was not possible to persist due to complex production processes or high costs. For example, the Shanghai Liaoyuan Chemical Plant at that time used a turbulent flow tower for the carbonation reaction of salt mud. The reaction was divided into two stages. The CO2 in the first stage came from the flue gas. In the second stage, cylinder CO2 is used for favorable reactions, and chilled water is also used to cool the salt sludge. Generally speaking, the process is relatively complex.
Here we use pressure filtration to recover brine to remove salt, and the salt sludge filter cake is loaded into trucks and transported away to make cement. There is a cement factory within the group: lol
Salt mud, I think it would be good to use refined salt when producing chlor-alkali, but now few companies directly use refined salt to directly produce chlor-alkali!
The main component of the salt mud in our factory is barium sulfate, and we are preparing to install equipment for refining barium sulfate. This post was last written by wang * neng edited on 2009-3-31 10:03 ]
How to solve the problem that when bricks are made with salt mud, the walls are prone to moisture and hair growth?
I heard there is someone who makes cement. I'm in Shandong. I don't know if it's true or not. It should be feasible.
The management and discharge of salt sludge in the three wastes of chlor-alkali production have not yet been solved. It is a difficult problem for waste management in chlor-alkali production enterprises today and will also become a problem in the future.* * Environmental protection is the focus of attention. The main problem is that the company does not have a better treatment method, and the salt, chlorate, alkali, etc. content in the salt mud exceeds the standard and does not meet the discharge requirements. ； Downstream enterprises such as cement and power plants cannot use it safely. Treating salt mud so that the sodium chloride and chlorate content in the discharged salt mud meets the standards has become the focus of environmental management for chlor-alkali production enterprises. Many companies have done a lot of exploration and experimental work for this purpose, but they have not achieved the expected results. Our company has achieved technological breakthroughs through long-term research, experiments, and large-scale production operations. The discharged salt mud can contain less than 1% salt and can be used for cement production, power plant desulfurization, and greening cultivation. Achieve harmless emissions and completely eliminate restrictions on corporate environmental emissions. Our company can realize general contracting of projects, with an investment of 1 million to 1.2 million yuan in a 100,000 tons/year caustic soda plant. Contact number: 15269359880