Hello, different sewage, the solution is different. Electroplating wastewater, domestic sewage, industrial wastewater contain phosphorus, but the treatment method is different:
A, electroplating wastewater total phosphorus exceeds ?
The phosphorus in electroplating wastewater is relatively special, different from the general total phosphorus, electroplating wastewater phosphorus is generally subphosphorus, subphosphorus wastewater, can not use the traditional phosphorus removal agent treatment, a more effective way is to use subphosphorus removal agent for treatment, catalyzed by a catalyst, subphosphorus removal agent can be combined with the subphosphorus, the formation of homogeneous **** precipitation.
For some electroplating plants, electronic factories, circuit board factories, due to the involvement of chemical nickel plating process, the presence of sodium hypophosphite in the raw water as a reducing agent, so the wastewater more than the problem of phosphorus exceeding the standard.
Two, domestic sewage total phosphorus exceeded ?
The phosphorus in domestic sewage is mostly organic phosphorus, for organic phosphorus and ? In other words, the most effective and cost-effective way is biochemical treatment, now many large-scale domestic sewage treatment plants have several biochemical tanks for treatment, can degrade COD, total phosphorus, total nitrogen and other indicators.
For total phosphorus,
Treatment: orthophosphorus wastewater treatment has biochemical phosphorus removal, chemical phosphorus removal of two kinds of chemical treatment, add iron phosphorus remover or calcium phosphorus remover in the wastewater for treatment.
Biochemical phosphorus removal and chemical phosphorus removal.
Biochemical phosphorus removal: the principle of biochemical phosphorus removal is through the anaerobic release of phosphorus aerobic absorption of phosphorus by polyphosphorus bacteria to complete the removal of phosphate, because the biochemical treatment is able to convert part of the organic phosphorus into orthophosphorus.
Three, phosphate wastewater total phosphorus exceeds the standard ?
Phosphate wastewater generally refers to anodic oxidation wastewater, industrial wastewater containing phosphorus, phosphoric acid wastewater, etc., the phosphorus in these wastewater is generally orthophosphate, for this type of phosphorus, generally using traditional phosphorus remover for treatment, for example, for the phosphorus concentration of anodic oxidation wastewater, you can join the lime treatment for the phosphorus concentration of industrial wastewater, you can join the iron system phosphorus remover for precipitation treatment. ?
Four, fertilizer plant pesticide phosphorus wastewater ?
Fertilizer plant or pesticide wastewater is generally organic phosphorus wastewater, for this type of organic phosphorus wastewater, using two processes for treatment, oxidation or biochemical treatment, oxidation method of treatment of wastewater is to oxidize organic phosphorus to orthophosphorus, and then add ? Into the orthophosphorus removal agent treatment, biochemical treatment is similar, is also the first organic phosphorus oxidation to orthophosphorus, and then orthophosphorus treatment.
V. Treatment of organic phosphorus
Organic phosphorus source: with the development of modern industry, the production and synthesis of organic compounds is increasing. Chemical, paper, rubber, dyes and textile printing and dyeing, pesticides, coking, petrochemicals, fermentation, pharmaceutical and medical and food industries discharged wastewater often contain organophosphorus compounds, resulting in environmental pollution, deterioration of the ground water, threatening human health, organophosphorus compounds contamination is increasingly being people's attention.
Treatment methods: wastewater containing organophosphorus compounds have a variety of treatment methods, summed up the commonly used methods at home and abroad can be divided into oxidation, biochemical methods, adsorption and hydrolysis methods. For more information about phosphorus removal, please go to ?
Adoption.