Research of Hydrodynamics of Biofilter with Surface Feed

Panteleeva

2017

Abstract. The article reflects the possibility to create a technological scheme of waste water treatment of domestic and similar type of sewage within minimal amount of excessive active sludge by means of bioreactors with immobilized feed. There are various aspects to be considered: technical, economic, social and ecological. According to the above it is strongly needed to provide a combination of proper waste water treatment, minimal sludge formation and the possibility for a further use of the sludge. One of the ways to achieve the goal above is to use an immobilized feed in the aeration tank. The necessary experiments were carried out in the department of waste water treatment and water ecology. The article includes the scheme of the facility and other parameters of the experiments, which has been carried. The combination of aerobic and anaerobic processes helps to provide proper quality of integrated biological treatment. Chambers of the aeration reactor were also equipped with the polymer feed of various structures. The sludge treatment that was also strongly needed was made by means of aerobic stabilization with the use of ejecting aeration. The results of experiment showed a good effect in both components -sewage and sludge treatment. Afterwards there was also an industrial model launched which confirmed the results of the previous stage.

Section: Waste Water Treatment Technologiesmentioning

confidence: 99%

Section: How To Reduce Amount Of Sludge At Wastewater Treatment Plantsmentioning

confidence: 99%

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Research for waste water treatment technology with low production of excessive active sludge

Panteleeva

2017

“…There are different effective technologies of removal of nitrogen and phosphorus to major stations [3][4][5][6][7]. However, their adaptation to small structures may be sometimes difficult [1,8].…”

Section: Introductionmentioning

confidence: 99%

Removal of nitrogen and phosphorous from domestic wastewater

Kulakov

2017

Abstract. This work is aimed at providing a deep cleaning from nitrogen and phosphorus at the requirements level for a small capacity waste water treatment plants with active sludge. The wastewater treatment technology includes: mechanical screen, anaerobic reactor, anoxic reactor, two aerobic reactors with floating media, aerobic reactor, clarifier, bioreactor, purification, filter, filter of tertiary treatment with the sorbent, ultraviolet disinfection facility. The sludge treatment includes aerobic stabilizer and facility of mechanical dewatering. The developed technology ensures deep purification of household waste waters from nitrogen and phosphorus. The degree of purification in the ammonium-ion reaches of 99.5 %. Efficiency of total nitrogen removal (the sum of ammonium, nitrite and nitrate nitrogen) is 85 %. The efficiency of biological purification of phosphates is 97.8 percent that is achieved without the use of coagulant. Requirements are met in most cases.

“…Galvanizing is an electrolytic deposition of a thin layer of metal on the surface of any metal object to protect it from corrosion, improve wear resistance, protection of cementation or for decorative purposes [3][4][5][6]. Galvanic coatings are used in many industries: machinery, metal industry, electrical equipment production.…”

Section: Introductionmentioning

confidence: 99%

Methods and solutions for galvanic waste water treatment

Yunchina

2017

Abstract. Currently galvanic sludge is considered as one of the most dangerous wastes, which are formed during purification of galvanic wastewater. The slimes of galvanic production are the most toxic industrial waste and sources of heavy metals emitted into the environment. Galvanic sludge belongs to the third hazard class; these wastes need to be deposited in special landfills for toxic waste. These polygons are complex and require significant costs. In this regard, there is a need for such methods of purification of galvanic sewage sludge, which may be used in other industries or will have fourth class of hazard or below. This article compares the main methods of purification of galvanic waste waters in general and galvanic sludge in particular, currently introducing new techniques for treating industrial effluents. One of them considers treatment of galvanic waste water by means of suspensions of ferriferous hydrosol that is an electric generated coagulant derived from waste forming, steel wool, etc. There is a sort of experience already acquired in some countries how to use of ferropericlase.