5results about How to "Low mud production" patented technology

This invention belongs to the field of wastewater treatment technology, specifically relating to a continuous flow aerobic granular sludge reactor and process. Addressing the problem that existing technologies struggle to meet high emission standards, this invention provides a continuous flow aerobic granular sludge reactor and process. The biological selection zone is connected to the microaerobic zone via a water passage, and the microaerobic and aerobic zones are interconnected. The microaerobic zone is uniformly equipped with a swirl aeration system, while the aerobic zone is uniformly equipped with a microporous aeration system. Multiple aerobic granular sludge rapid granulation devices are installed above the aerobic zone, enabling rapid cultivation of aerobic granular sludge and stable, efficient, and low-cost continuous operation of the aerobic granular sludge technology.

The sewage treatment method can greatly reduce the sludge amount, and comprises the following steps: step 1, flocculants and magnetic powders are added into sewage to be treated, after magnetic flocculation, precipitation and magnetic separation recovery, preliminary purified water is obtained; step 2, microbial mixed stock solution containing anaerobic ammonia oxidation bacteria and aerobic granular sludge carriers are added into the preliminary purified water, and aeration and non-aeration cultivation reactions are alternately carried out in a sequencing batch reactor, so that water degradation and purification are completed, wherein, protozoa are added on the 2nd-3rd day of the cultivation reaction, metazoan is added on the 4th-5th day of the cultivation reaction, and the reactor enters a stable operation period on the 6th-14th day of the cultivation reaction; and step 3, the water after the reaction is sequentially subjected to filtration and disinfection treatment, and reaches the water standard; by constructing a complete micro-animal food chain from functional bacteria to protozoa and metazoan, and by utilizing the predation of higher micro-animals on lower microorganisms, the sludge is in-situ reduced, and the environmental and economic benefits are achieved.

The application provides a system treatment process for fluorine-containing wastewater, which comprises the following steps: a fluorine-containing wastewater treatment process, a sludge treatment process, a defluorination filter material regeneration process and a sludge waste liquid treatment process. The system treatment process for fluorine-containing wastewater has the advantages of low sludge yield, low flocculant consumption, low treatment cost, high adsorption capacity, greatly prolonged adsorption time of the adsorbent, reduced regeneration frequency, no discharge of regeneration liquid, and effectively solved problem of difficult treatment of by-products of traditional treatment processes.

The application relates to the technical field of sewage treatment, and discloses a biological filter rotating disc system based on replaceable composite fillers and a nitrogen and phosphorus removal method. 2+ The biological filter rotating disc system supports online filler replacement and is suitable for upgrading and reconstruction of sewage plants and advanced treatment of industrial wastewater.

The application discloses a kind of full solid waste base water treatment materials and its preparation method and application, which is made of the following mass percentage of raw materials: scrap iron: 20~25%;Steel slag: 30~40%;Non-dangerous waste waste activated carbon: 15~20%;Engineering slurry dry powder: 15~20%;Waste glass: 5~8%;Waste wood fiber: 5~10%;The application is by using specific proportion of raw materials, the various solid wastes that originally need to be paid disposal are converted into high-performance water treatment functional materials, realizes "waste treatment", fundamentally subverts the high-cost mode of traditional water treatment materials depending on commodity raw materials, comprehensive porous adsorption, iron-carbon micro-electrolysis and biological membrane and other various phosphorus removal principles, synergistically exert their respective advantages, it is a kind of efficient, long-acting, stable and environment-friendly full solid waste water treatment material, it has important significance for promoting the green development of water treatment industry and reducing treatment cost.