2results about How to "Reach emissions" patented technology

The utility model belongs to solid waste resource utilization technical field especially relates to a kind of production system for preparing high-purity magnesium sulfate with solid waste magnesite slurry, it is characterized in that, including solid waste pretreatment unit, reaction kettle, separation unit, drying unit and circulation unit, solid waste pretreatment unit includes crusher and bunker, reaction kettle is lined with enamel, with frequency conversion stirrer and temperature controller, reaction kettle is connected with high-position sulfuric acid tank outlet, high-position sulfuric acid tank is connected with sulfuric acid batching tank by pipeline, sulfuric acid pump, separation unit includes first stage electric centrifuge and second stage electric centrifuge, two-stage electric centrifuge between magnesium sulfate tank and crystallization tank are equipped, circulation unit includes PE mother liquor tank and mother liquor pump, final product is magnesium sulfate heptahydrate or anhydrous magnesium sulfate with water content≤0.5%.The utility model has the advantages that:low-activity solid waste magnesite slurry is converted into >99% purity magnesium sulfate, realizes solid waste high-value utilization conversion, and "zero" wastewater discharge is achieved in whole process.

The invention provides a treatment device for wastewater recovery, and is applied to the field of treatment devices for wastewater recovery. According to the technical scheme, the device is characterized by comprising a wastewater collecting tank, at least two wastewater adjusting tanks connected with the wastewater collecting tank, a plurality of dosing tanks for containing different medicaments, a mixer connected with the dosing tanks and the wastewater adjusting tanks, and a high-energy reactor connected with the mixer, the wastewater treater is connected with the high-energy reactor; the clean water tank is connected with the wastewater treater; the wastewater collecting tank is connected with the wastewater adjusting tank through a first lifting pump; the wastewater adjusting tank is connected with the mixer through a second lift pump, the plurality of dosing tanks are connected with the mixer through metering pumps, and the high-energy reactor is connected with the wastewater treater through a third lift pump; the device has the technical effects of realizing efficient and stable treatment and recycling of wastewater of various sources and different water qualities, and has the characteristics of strong adaptability, high treatment efficiency, good automation degree, excellent effluent quality and the like.