In recent years, with the country's attention to environmental protection, people's awareness of environmental protection, China's sewage treatment industry is booming. The development speed of Panjin Hongshi Environmental Protection Technology Co., Ltd. is also in the forefront in the history of development, and the sewage treatment process has evolved from a single traditional activated sludge method to a variety of processes or a combination of various processes. Different processing technology will produce different operation effects, operation costs will also be different. Traditional activated sludge process and deformation process are mostly used in large sewage treatment plants, while oxidation ditch process is mostly used in small sewage treatment plants. The construction cost of oxidation ditch process is lower than that of traditional activated sludge process, but its operation cost is higher than that of the latter. The smaller the scale of sewage treatment plant, the more obvious the advantage of oxidation ditch process. Urban sewage treatment plant is a big consumer of energy consumption.this paper explains the importance of saving energy and reducing consumption to sewage treatment plant through the deion and analysis of its various costs, and gives detailed cost control measures.

The high ammonia nitrogen wastewater with CN ratio less than 3 has been operated. Since the NITROGEN removal process requires CN ratio between 4 and 6, it is necessary to add carbon source to improve the completeness of denitrification. At that time, the carbon source added was methanol. Due to some reasons, the outlet valve of the methanol storage tank fell off, and A large amount of methanol entered pool A, leading to A lot of foam in the aeration tank, and the surge of effluent COD and ammonia nitrogen, and the system collapsed.

Phosphorus in industrial sewage mainly comes from phosphide of raw materials.

Activated sludge surface with negative charge, physicochemical sludge with positive charge, is a lot of people know, so biochemical sludge selection of cationic flocculant, physicochemical mud selection of anionic flocculant. But why does activated sludge have a negative charge? This is related to the main composition of activated sludge bacteria, the charge of bacteria determines the charge of activated sludge, Panjin Hongshi Environmental Protection Technology Co., Ltd. take you to fully analyze the principle of bacteria with charge!

For oil and water separation treatment, commonly used to have oil and water separator. Oil and water separator is also called oil and water separator, its main principle is to use the different proportion of oil and water, the use of filtration, precipitation, buoyancy and other methods to bring together the separation of oil and water.

01 Organic matter caused by excessive ammonia nitrogen