With the continuous improvement of economic level and the rapid development of science and technology, the pace of urbanization is gradually accelerating. Many problems have been exposed in this process. The severity of the pollution problem is constantly rising, and urban waste as a major obstacle to economic development cannot be ignored. In response to […]
Untreated factory waste and domestic waste are simply piled up in the open air, occupying land and destroying landscape. Moreover, the harmful components in the waste are spread by the wind and enter the soil, river or underground water source after rain. This process is solid waste pollution. (1) Water pollution. Without harmless treatment, solid […]
Solid waste treatment technology involves physics, chemistry, biology, mechanical engineering and other disciplines. The main treatment technologies are as follows: (1) Pretreatment of solid waste. Before the comprehensive utilization and final treatment of solid waste, pretreatment is often needed to facilitate the next treatment. Pretreatment mainly includes crushing, screening, grinding, compression and other processes of […]
As oil sludge is a kind of hazardous waste with stable structure and difficult to deal with, it can not be treated by simple landfill like traditional waste. In the study of oil sludge treatment technology, we must strictly comply with the national environmental protection standards, and control the disposal cost in a reasonable range. […]
The long-term storage of oil sludge will cause serious pollution to the surrounding soil, air and water, and even harm the health of the nearby residents. The soil polluted by oil sludge may appear the phenomenon of insufficient nutrition, and oil sludge will restrict the growth of crops, hinder the germination of crop seeds, and […]
In the process of exploitation, transportation, storage and utilization, oil will produce a lot of oil sludge, which can be divided into three categories according to the source: 1. Oil field production sludge. This kind of oil sludge is mainly produced in the process of oil exploitation. After a small amount of oil overflows, it […]
1. Sludge combustion power generation The sludge (after mechanical dehydration) is first dried by heat, and then burned in the fluidized bed furnace to generate high-pressure steam, so as to promote the comprehensive system of steam engine power generation. Compared with the incineration system, the annual treatment of 95000 tons of dry sludge can save […]
At present, most urban sewage treatment plants around the world use activated sludge treatment. One of the common problems is that the microorganisms in activated sludge will be affected by various internal and external factors to reduce the proportion of activated sludge and float away, which not only increases the amount of suspended solids in […]
Industrial wastewater refers to the wastewater, sewage and waste liquid produced in the industrial production process, which contains industrial production materials, intermediate products and products that are lost with the water and pollutants generated during the production process. It summarizes the chemical industrial wastewater and the printing and dyeing industrial wastewater. 15, paper industry wastewater, […]
1. Light ceramsite made of sludge A ceramsite company in Kunming introduced advanced domestic technology and used Dianchi sludge as a raw material to develop high-quality artificial light aggregates–ceramsite and ceramsite hollow brick. Among them, the proportion of sludge in raw materials is as high as 30% to 40%. This kind of ceramsite hollow brick […]