First of all, it's good to get back to the question you posed. ? As a manufacturer engaged in fly ash stabilization chemicals, I would like to categorize the answers to the three questions you have raised, and hope that I can give you a good answer.
The first question: the treatment of waste incineration fly ash?
Cement + water + chelating agent + fly ash for chelating, so that it reaches the GB-16889 landfill standards, and then safe landfill.
Advantage: cost-effective and low risk.
Cooperative treatment in cement kiln
Make its fly ash amount is within thirty percent of its cement raw material for sintering.
Advantage: large processing capacity; disadvantage: affect the quality of cement and flue gas can not meet the standard. Chlorine Chlorine is the biggest obstacle to cement kiln co-processing. Technical advantages such as bypass air release cannot solve the problem of flue gas standardization, dioxin and other tail gas cannot meet the standard.
Melting, plasma technology and so on.
This type of technology cannot be popularized due to the large amount of power consumption and safety considerations. It can be used for hazardous waste and meter waste treatment.
Advantage: safety ? Disadvantage: the cost is too high
Summary of the stabilizing agent (chelating agent), at this stage, the chelating agent is used to treat the fly ash is the most effective way to use the most popular domestic use of manufacturers.
The second question: how many good brands of chelating agent used to treat fly ash?
In fact, this question above Baidu can tell you a lot, as a chelating agent engaged in many years of practitioners, to give you a pertinent answer.
Lianyungang Xinjiang environmental protection ? (I am engaged in the unit)
Kurita (Dalian) Industry (Japanese companies, domestic production)
Japan Dongchoda (completely imported)
Tianjin Yiming (engaged in chelating agent earlier enterprises)
Nantong Hailer ? (the most reluctant to write manufacturers)
Shanghai Baosteel gas (backed by a big tree)
There are some more will not write, but the above few are active in the major bidding site of the big brother.
The third question ? Are there any companies that do this outsourcing?
The definition of fly ash as a hazardous waste is itself somewhat vague. But there are a lot of companies that require a manufacturer who must be qualified to handle hazardous waste to do so. But now this qualification has been canceled, our factory had applied for the treatment qualification, but the site it needs is given by a project company. ? As an example, A waste incineration power plant needs to treat fly ash, bidding for the treatment of enterprises, but enterprises for treatment qualification need to apply for treatment qualification with the help of A plant's fly ash curing workshop, which is a problem. ?
Each local environmental protection interpretation is different, there are several provinces consulted the Environmental Protection Bureau of the Ministry of Housing and Construction, the answers given are different. But you can be sure that there are two points: First point: the main body of environmental protection will not side, is the waste incineration power plant. The second point: the factory transfer fly ash must meet the landfill standard. These two points are the key. The first point: the main body of environmental protection recourse will not side, is the waste incineration power plant. My company is also running general contracting several power plant fly ash operation, environmental protection does not require qualification hard requirements. The only thing that must be done is that The only thing that must be done is:
Transportation of fly ash must meet landfill standards;
Long-distance transportation vehicles must have hazardous waste transportation qualifications.
I hope my pertinent answer can give you a solution to the problem, if there are other manufacturers have bad words, please contact me, thank you! ?tongjiayouxi ? Welcome owners and peers to communicate with each other