Is the sulfur produced through biogas desulfurization considered hazardous waste?
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As the title suggests, wet desulfurization is planned to be used for biogas treatment, primarily to remove hydrogen sulfide from it. There is now a question: since the sulfur obtained through this process is not further refined or purified, does this sulfur constitute hazardous waste? If it is further purified and dried to become a finished product, would it no longer be considered hazardous waste?
The key point is that the sulfur that is released is unrefined and unpurified; what use is it? If there are downstream users, it can be considered a by-product. What is further purified and dried to become the final product is your product.
It should be classified as solid waste, not hazardous waste, right?
We did some preliminary inquiries, and if it’s not purified or dried, the price is very low, around 30 yuan roughly. Moreover, the product we produce is easy to recycle. If purification and drying are required, the price goes up significantly. We’re mainly concerned about the equipment and operating costs in the long term, so we don’t want to invest in such additional equipment.
We also hope it is solid waste, rather than hazardous waste.
Lift up. By the way, I would like to ask what the best way is to handle hydrogen sulfide waste gas
Generally, what methods would the property owner use to handle such a situation? If the designers handle it, it seems that some of the ideas might not be approved by the owners, so economic factors will be taken into consideration
Without considering purification before emission, if it is dispersed it may be fine, but if it is concentrated it is definitely hazardous waste
As long as someone intends to use this product for manufacturing purposes, it can be classified as a by-product; you can explain the situation to the environmental protection authorities, provide your sales invoices along with information on how the purchasing party will use it in production, and apply to have the environmental impact assessment report revised.
Being classified as solid waste is also a problem; it cannot be considered ordinary solid waste. Solid waste needs to be treated, and the costs associated with such treatment are quite high. As for to what extent you handle sales, that is something your company needs to decide; even if there is no profit, it is still possible to avoid the costs associated with waste disposal