The Use of the KBS-type Flotocombines in the Practice of Wastewater Treatment

2021 ◽  
Vol 25 (7) ◽  
pp. 4-7
Author(s):  
B.S. Ksenofontov ◽  
A.S. Kozodayev ◽  
R.A. Taranov ◽  
M.S. Vinogradov
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Waste Water Treatment

The results of the development and experience of the implementation of flotocombines for wastewater treatment are considered. The principle of flotocombine operation and peculiarities of its use are described. Technological schemes of waste water treatment with the use of flotocombines, as well as data of their industrial tests in processes of waste water treatment of various industries are presented. The higher efficiency of wastewater treatment using flotocombines has been experimentally proven.

Water reuse for irrigation from waste water treatment plants with seasonal varied operation modes

2004 ◽  
Vol 50 (2) ◽  
pp. 47-53 ◽  
Author(s):  
P. Cornel ◽  
B. Weber
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Treatment Process ◽  
Waste Water Treatment ◽  
Treated Wastewater ◽  
Nitrifying Bacteria ◽  
Water Treatment Plants ◽  
Operation Modes ◽  
Waste Water Treatment Plants

Irrigation periods are usually limited to vegetation periods. The quality requirements for treated wastewater for disposal and for reuse are different. The reuse of water for irrigation allows partly the reuse of the wastewater's nutrients (N and P). Outside the irrigation period the water must be treated for disposal, thus nutrient removal is often required in order to avoid detrimental effects on the receiving surface water body. Only wastewater treatment plants with different operation modes for different seasons can realise these requirements. The nitrification is the most sensitive biological process in the aerobic wastewater treatment process. At low water temperatures the nitrifying bacteria need several weeks to re-start full nitrification after periods without NH4-removal. Therefore it is necessary to develop options for waste water treatment plants which allow a fast re-start of the nitrification process. Based on theoretical considerations and computer simulations of the activated sludge treatment process, one possibility for implementing a wastewater treatment plant with different seasonal operation modes is evaluated.

scholarly journals Efficiency of application of the microbiological method of waste water treatment to remove hexamethylendiamine

2021 ◽  
Vol 6 (1) ◽  
pp. 28-32
Author(s):  
Valeriia Lytvynenko ◽  
◽  
Alina Dychko ◽  
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Microbiological Method ◽  
Bacterial Cultures ◽  
Quality Of Water ◽  
Nutrition Source

Wastewater contaminated with hexamethylenediamine (HMD), which is discharged into natural reservoirs, causes damage and loss of hydrobionts, worsens the quality of water which becomes unsuitable for use. For wastewater treatment from HMD, the possibility of applying bacterial cultures-destructors which use the HMD as a nutrition source is considered.

scholarly journals ENZYMATIC WASTE WATER TREATMENT

World Science ◽  
2021 ◽  
Author(s):  
Nancey Hafez
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Metal Ions ◽  
Wastewater Treatment Plants ◽  
Waste Water Treatment ◽  
High Energy ◽  
Enzymatic Reactions ◽  
Biological Interactions ◽  
Physico Chemical

Enzymes are biocatalysts provided by cells and are used in most metabolic methods. Most enzymes are consisting of proteins containing tertiary amino acid which bind to co enzyme or metal ions. Enzymes are accelerating biochemical processes by some mechanisms to chemical catalysts e.g metals, metal oxides and metal ions. Enzymes can be very effective under conditions e.g (temperature, atmospheric pressure and PH). Many enzymes have hydrolyzing, oxidizing and reducing characters. Enzymatic reactions always provide less side effects reactions and fewer waste by products. That is why microbial Enzymes can give an effective and environmental safe alternatives as metabolic inorganic chemical catalysts which can be used in all over pharmaceutical industrial processes. Enzymes are used in waste water treatment. Treatment technologies depend on physico-chemical approaches in wastewater treatment plants which require skills, high operation costs (in terms of high energy and chemical demand). Wastewater treatment is operated to protect the quality of limited freshwater resources, which are most times the final discharge points of effluents, and also, to promote the reusability of expended clean water; amounts of hazardous aromatic byproducts are still generated [3, 4]. The observation shows that wastewater treatment plants, though liable to remove microcontaminants such as heavy metals, and to a far lesser extent, aromatic contaminants, were originally structured for the removal of solid wastes, ecofriendly organic matter and eutrophication stimulants from wastewater, thereby reducing eutrophicating pollution loads; the micropollutants may only be moderately affected by the chemical, physical and biological interactions within the treatment plants.

scholarly journals APLIKASI MEMBRANE BIOREACTOR (MBR) UNTUK PROSES DAUR ULANG AIR LIMBAH

2018 ◽  
Vol 7 (2) ◽  
Author(s):  
Taty Hernaningsih
Keyword(s):  
Waste Water ◽  
Water Quality ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Membrane Bioreactor ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Quality Standards ◽  
Waste Water Treatment Plant ◽  
Recycled Waste

The population is growing rapidly result to increased demand for drinking water while the other side of this situation causes to the increasing amount of wastewater. Waste water treatment plant has been built in several major cities in Indonesia to overcome the problem of pollution.  Wastewater treatment plant only treats wastewater to tackle environmental pollution without being able to overcome the shortage of clean water community. Therefore, to solve the existing problems will be considered any further processing with recycled waste water treatment. One technology that may be developed for this purpose is the system of Membrane Bioreactor (MBR). This has been widely applied as an advanced unit of wastewater treatment and serves as a unit of processing recycled waste water. The MBR system has advantages such as: it only takes a little bit of land, can treat wastewater with discharge varying quality and process wastewater with high pollutant removal efficiency. MBR were investigated using a membrane filter submerged in the reactor. Membrane module is hollow fiber with a form of polymeric membrane materials. Research has been done on wastewater treatment with a combination of conventional WWTP as preliminary and advanced processing unit with MBR since March 4, 2014 until June 2014. The effluent quality  of result research proved that  the treated water quality meets  water quality standards are set with  Permenkes RI N0.416/Menkes/Per/IX/1990, dated 3 September 1990. The nitrification and denitrification also proceed well so that the concentration of nitrite and nitrate meet the quality standards. In addition, the percentage removal of heavy metals (arsenic, cadmium, chromium, selenium, lead) can reach 99%. Keywords: MBR, wastewater reuse, BOD5, COD, HRT dan SRT

scholarly journals Size dependence of silver nanoparticle removal in a wastewater treatment plant mesocosm measured by FAST single particle ICP-MS

2017 ◽  
Vol 4 (5) ◽  
pp. 1189-1197 ◽  
Author(s):  
Jani Tuoriniemi ◽  
Monika D. Jürgens ◽  
Martin Hassellöv ◽  
Geert Cornelis
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Silver Nanoparticle ◽  
Size Dependence ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Engineered Nanoparticles ◽  
Water Treatment Plants ◽  
Icp Ms

The quantities of engineered nanoparticles (NP) released to the environment are often influenced by their fate in waste water treatment plants (WWTP).

scholarly journals Reabilitation of a wastewater treatment plant – possible environment impact

2017 ◽  
Vol 19 (1) ◽  
pp. 65-78
Author(s):  
Mădălina Stănescu ◽  
Constantin Buta ◽  
Geanina Mihai
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Wastewater Treatment Plant ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Environment Impact ◽  
Operational Phase

Abstract Romania, has declared, by the Governmental Decision nr.352/2005, all its territory as a sensitive area. This implies that, for all urban agglomerations larger than 10.000 population equivalent waste water treatment plants (WWTP) with nutrient removal must be built or upgraded. This paper presents the results regarding the possible environmental impacts expected from the project for construction of waste water treatment plant in the City of Vaslui, with main focus on surface water. This research study includes assessment methodology, project description regarding the rehabilitation and extension of the Vaslui waste water treatment plant, data related to water resources, impact assessment on water and appropriate mitigation measures. The assessment of the impacts has been performed for the construction and operational phase of the wastewater treatment plant. The construction phase was subdivided into several phases, while in the operational phase the impacts are analyzed following the line for treatment of the wastewater and effluent production, the line for sludge production and drying process, sludge disposal in safety conditions considering the provisions of 86/278/EEC Directive and the line for biogas utilization.

Synchronous Use of Hindakia Sp. For Electricity Generation and Dairy Wastewater Treatment

2021 ◽  
Author(s):  
Sikkandhar WasimRaja ◽  
Kalyanasundaram Geetha Thanuja ◽  
Subburamu Karthikeyan ◽  
Subramanian Marimuthu
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Culture Collection ◽  
Dairy Wastewater ◽  
Electricity Production ◽  
Cyclic Voltammograms ◽  
Redox Peak ◽  
Beneficial Traits

Abstract This paper illustrates the potential of microalgae in electricity production in concurrence with wastewater treatment. In order to explore the potential biogenic algal strains, our study focused on the isolation of microalgal strains from various aquatic sources. Cyclic voltammetry was performed to detect the electrogenic activity and out of 18 algal isolates, six algal strains were screened. The cyclic voltammograms of Hindakia sp from the culture collection revealed the well-defined redox peak in contrast to the other algal strains. The electrogenic Hindakia sp. was also analyzed for their potential to remove nutrients in wastewater treatment. A fifteen days trial under lab scale race way pond was conducted to evaluate the performance of electrogenic algae. A significant decrease in N, P, BOD, COD, and TOC was observed. The removal efficiency of NH4-N, NO3-N, P, BOD, COD and TOC were 90.38, 90.24, 66.75, 67.15, 69.44, and 83.51 respectively. Hindakia sp was able to produce 13.79 mg/ml of EPS which paves way to a hydrated biofilm matrix that aids in better electrogenicity. To the best of our knowledge, EPS production, electrogenic activity and their utility in waste water treatment are reported for the first time in Hindakia sp. The results of our study demonstrated the combined beneficial traits of microalgae towards electricity production and waste water treatment.

The Experience and the Results of Operating Small Wastewater Treatment Plants

1990 ◽  
Vol 22 (3-4) ◽  
pp. 267-273
Author(s):  
Mitja Rismal
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Energy Consumption ◽  
Water Treatment ◽  
Activated Sludge ◽  
Wastewater Treatment Plants ◽  
Waste Water Treatment ◽  
Water Jet ◽  
Rotating Discs ◽  
Water Treatment Plants

About 15 years of experience gained from operating 7 small waste water treatment plants between 150-500 p.e. and 6 plants of 2000-3000 p.e. capacity are described. All of the plants involved are low-loaded activated sludge plants with water jet aeration generated by screw or propeller pumps which both proved to be efficient in aeration while secure and simple in operation. In comparison with other types of small treatment plants in our country (rotating discs and bubble aeration activated sludge plants), they proved to be reliable and simple in operation and produce an effluent of good quality. The energy consumption and the necessary flow velocites in aeration tanks are computed and measured.

Electrophoresis in Membrane Separation Processes: From Lab to Field Scale Experiments

2006 ◽  
Vol 314 ◽  
pp. 257-262
Author(s):  
G. Falk
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Membrane Fouling ◽  
Membrane Separation ◽  
Waste Water Treatment ◽  
Domestic Wastewater ◽  
Field Scale ◽  
Specific Energy Input ◽  
Processing Scheme

In this paper results of electrophoretically activated processes for domestic wastewater treatment in lab and field scale experiments are presented. The principal mechanisms of non-membrane and membrane based electrokinetic solid liquid separation by electrophoresis are described. In the case of non-membrane based electrokinetic wastewater treatment a modular processing scheme is suggested in order to achieve economically and ecologically suitable processing conditions based on colloidal wastewater characteristics. In the case of membrane based electrokinetic waste water treatment an effective anti-membrane fouling process is designed controlled by colloidal characteristics of the wastewater, especially zetapotential, as well as external field parameters and microfiltration module geometries. The specific energy input of the membrane based and non-membrane based electrophoretic waste water treatment methodologies are compared and future perspectives of electrokinetic activated waste water purification processes are proposed.

scholarly journals ADSORBTION METHOD OF WASTE WATER TREATMENT AT SEWAGE FACILITIES IN OIL PROCESSING PLANTS

2018 ◽  
pp. 15-19
Author(s):  
Natalia Nickolaevna Artemieva ◽  
Ruslan Aleksandrovich Burnashev
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Force Field ◽  
Waste Water Treatment ◽  
Processing Plant ◽  
Purification Method ◽  
Oil Processing ◽  
Processing Plants ◽  
Technical Solutions

The aim of research is to find ways of increasing the efficiency of wastewater treatment in order to solve the problem of oil sludge accumulation in the oil processing plant. The use of an adsorption purification method is considered, the advantage of which is in adsorbing molecules of pollutants under the influence of the force field in adsorbent pores. Application of new technical solutions helps to reduce the volume of accumulated wastes and to make the process of treatment more environmentally friendly and economically feasible

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