Non-metallic mineral as an important material basis of human survival and development, has long been in harmony with humans, it is closely related to health and the environment, ecology. Modern scientific research shows that many non-metallic minerals are natural materials for modern industrial pollution, and low-cost high-quality materials for improving soil, restoring ecology and producing environmentally friendly building materials. Non-metallic minerals also play an important role in medicine and health care.
At present, there are two main types of sewage treatment methods: coagulation method and biochemical method: the coagulation method adopts the process of grid sanding and flocculation precipitation. The advantages are small investment, small land occupation, simple equipment, removal of heavy metals and phosphorus , and good chroma effect, but the disadvantage is that the removal of organic matter and nitrogen is not ideal, and the final discharge still causes secondary pollution; the biochemical method uses an oxidation process. Mainly, the advantage is that the process is relatively mature, and the organic pollutants and nutrients such as nitrogen and phosphorus in sewage are well removed, but the disadvantages are low removal rate of chemical oxygen demand, poor decolorization effect, and large investment and land occupation. High power consumption and complicated equipment.
Neither of these processes is an ideal process for treating wastewater. To thoroughly control sewage, it is necessary to seek new technologies and processes that are simple and reliable, with low construction and operating costs. This kind of process should be treated after the sewage is treated, the effluent water quality is good, the investment is low, the power consumption is low, the land occupation is small, the operation cost is low, the sludge can be completely separated and can be comprehensively utilized.
The ultra-fine water quality improving powder and the preparation method thereof are obtained by combining several kinds of non-metallic minerals by ultra-fine pulverization and according to different ratios. It has excellent ion exchange, selective adsorption, plasticity and cohesiveness, and has a new role in the treatment of sewage from municipal sewage, chemical sewage, brewing, pharmaceutical, production of MSG, and cleaning of acidic metal materials. After dozens of tests in various domestic sewage such as urban domestic sewage, papermaking sewage, printing and dyeing sewage, it has won wide acclaim.
The process converges the advantages of coagulation and biochemical methods, avoiding their shortcomings, and is still the sediment sanding and flocculation precipitation. The difference is that its flocculation is better than the coagulation method. For example, in only one and a half minutes, the relevant pollutants in one kilogram of sewage quickly flocculate and sink.
The use of ultra-fine water quality improving powder can achieve the effect of “three lows and one less†for the enterprise industry, namely, low construction cost, low operation and management costs, low operational management requirements, and low secondary pollutant emissions, making urban sewage facilities affordable. , can be used.
In addition, a popular four-in-one treatment process is also based on the treatment of high-concentration sewage by ultra-fine water quality improving powder, which separates municipal waste by water washing. Urban garbage is divided into floating objects (mainly plastics), suspended solids, and solid sediments. The plastics are first recovered, the solid precipitates are sold as new building materials, and the suspended solids are fed into the fermentation with sludge to produce biogas for power generation. Fermentation and disinfection of sludge and sediments constitutes a scientific and complete treatment process.
The four-in-one process of treating urban domestic sewage, garbage, human and animal waste, and sludge with ultra-fine water quality improving powder broke the situation that biochemical treatment of domestic sewage dominated the world, and created a precedent for the treatment of urban domestic sewage by physicochemical method, and solved the washing. The world-wide problem of separating sludge from the law has realized the resource utilization of urban domestic sewage, garbage, human and animal waste, and sludge. In order to completely solve the problem of secondary pollution in the city, we have explored a practical way.
The four-in-one process creatively integrates the treatment of the four major pollutants in the city and processes them in a simple and efficient process. The process equipment is simple, only two pools, two agitators, two pumps, one mud pump and some pipes can complete the sewage treatment; the advantages of coagulation and biochemical treatment of sewage are gathered, and its Disadvantages, because the powder can be made into organic fertilizer, greatly reducing operating costs.
It is worth emphasizing that the flocculated sediment is easily sucked away by the mud pump. At the same time, the precipitate contains nitrogen and phosphorus (especially domestic sewage), which can be used as a raw material for seasoning and fertilizer without secondary pollution. The treated water has a higher pH value, but after proper acid neutralization and sand filtration, it can meet the national emission standards.
The process has the advantages of short process, small land occupation, low investment, simple equipment, convenient management, high organic matter removal rate, creative use of domestic sewage to separate urban garbage, and use of treated water to clean urban garbage. Waste treatment technology, the effluent and sludge after sewage treatment have no different (odor) smell. At the same time, the electrical energy required in the process can be internally supplied, and the use of bio-generation and solar power generation can truly save energy and reduce emissions.
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