Similar to the restoration of industrially contaminated sites, the environmental sustainability considerations of farmland restoration are divided into two parts. The first part is the harm to human health caused by the migration and exposure of pollutants in the soil, usually through quantitative analysis of health risk assessment. The second part is the various effects […]
With the rapid development of my country’s social economy, industrial activities and agricultural activities have brought serious soil pollution problems, which have brought huge risks to my country’s ecological environment and human health. According to the “National Survey Report on Soil Pollution Status” issued by the Ministry of Environmental Protection, the actual rate of spot […]
As an important product of sludge resources, sludge ceramsite has the characteristics of stable chemical properties, small density, good heat resistance and rich pores. It has been widely used in construction, environmental protection, gardening and other fields. In the use of building materials, the use of lightweight ceramsite for the preparation of lightweight aggregate concrete […]
1. Influence of sludge content The ratio of raw materials is a key step in the preparation of ceramsite. It is necessary to comprehensively consider the influencing factors such as the amount of sludge, the chemical composition, the plasticity of the blank, and the economy. When using urban sludge and coal gangue as raw materials […]
Sludge preparation of swelled ceramsite must meet two basic conditions: ① The raw material contains enough gas-generating components (such as illite, hematite, pyrite, dolomite, etc.); ② generates enough glass phase under high temperature conditions to encapsulate the generated gas. The main components of raw materials for firing ceramsite are generally SiO2 and Al2O3. Al2O3 produces […]
Sludge is a by-product produced in the process of urban water treatment. It has the characteristics of high water content and low strength, and often contains harmful components such as pathogenic bacteria, heavy metals and toxic, harmful and difficult-to-degrade organic matter. If not properly disposed of, it will easily cause two Secondary pollution. Traditional sludge […]
Pyrolysis and incineration are two very important methods for processing solid waste. Pyrolysis and incineration have certain differences in terms of processing conditions, products produced, and applicable conditions. The difference between pyrolysis and incineration method 1: different oxygen supply conditions Incineration refers to the process of garbage with certain calorific value energy undergoing thermochemical reaction […]
First. Corrosion of air preheater Air preheater corrosion and ash plugging are mutually reinforcing processes. When the air preheater is corroded, the surface finish of the heated element is seriously deteriorated, making ash more easily adhered to the heated element, which increases the possibility of the air preheater blocking ash. When the air preheater is […]
The structure of the garbage crane is mainly composed of the bridge frame, the operating mechanism of the cart, the main lifting mechanism, the operating mechanism of the trolley, the grab, the weighing device and so on. Bridge: The main beam and end beam of the bridge are in the form of box beams, which […]
The garbage crane is located above the garbage pond and is mainly responsible for the feeding, handling, mixing and weighing of garbage. Feeding: When the garbage at the inlet of the garbage gasifier is insufficient, the garbage crane grabs the garbage The fermented garbage in the pond runs to the top of the feed inlet […]