(Jiangsu Minghua Nonmetallic Mineral New Materials Co., Ltd., Nanjing, Jiangsu 2 1000)
First, the content introduction
Our company regards the treatment of urban domestic sewage as the most important subject of environmental protection, conducts in-depth research, develops a new generation of products, and creates a new set of rapid sewage treatment technology. The treated water can be discharged up to the standard, and can also be recycled for secondary use. The generated sludge can be processed into high-efficiency green compound fertilizer without secondary pollution, which has good social, environmental and economic benefits.
(A) the characteristics of ultra-fine water quality improvement powder
Our company selects minerals with excellent ion exchange, adsorption, plasticity and cohesiveness from a variety of non-metallic minerals, which can quickly flocculate suspended solids and other organic substances in sewage, and has strong decoloration effect to produce ultrafine water quality improvement powder. The improved powder has the physical and chemical characteristics of high activity, low density, high strength, non-combustible, non-toxic, tasteless and acid-free.
(2) Preparation and composition
Ultrafine water quality improving powder is made of various nonmetallic minerals through the processes of material selection, preparation, calcination, crushing, grinding, compounding and carbonization.
See table 1 for the results of component identification and analysis:
Table 1
Second, popularization and application
The product was tested in Jiang Xinzhou Sewage Treatment Plant. The process equipment is simple, which combines the advantages of coagulation and biochemical methods and avoids their disadvantages. The difference is that its flocculation is better than coagulation. The removal rate of organic matter, nitrogen and phosphorus in sewage is high, the decoloration effect is good, and the effluent is colorless and odorless, reaching the national secondary discharge standard.
The chemical wastewater from the sewage treatment plant of Nanjing Yangzi Petrochemical Co., Ltd. was tested with superfine water quality improving powder, and the effluent reached the national secondary discharge standard. The experiment shows that the product has low cost and simple process, which greatly reduces the capital investment, and the oily sediment can be mixed with coal as fuel.
The wastewater from the production of Henan Rongchang Paper Co., Ltd. can meet the national second-class discharge standard after being treated by superfine water quality improving powder in xinmi city Environmental Monitoring Station.
Yangzhong Huada Water Washing Plant used this technology and chemicals to solve the sewage treatment problem that has been puzzling for many years.
This product can not only treat sewage, but also improve the water environment in a large area with satisfactory results. In the test report of Jiangsu Environmental Science and Technology Research Institute, it is pointed out: "The settling speed of water purifying agent is faster when treating sewage."
Three. Identification, awards and patents
In April 2005, Jiangsu Science and Technology Department entrusted Nanjing Science and Technology Bureau to organize and invite experts from China Building Materials Association, Silicate Society, Papermaking Society and National Environmental Protection Society to appraise the papermaking wastewater treatment technology in xinmi city, Henan.
"Ultra-fine water quality improving powder" was patented as a utility model with patent number ZL02 157275.5.