scholarly journals STUDY OF EFFICIENCY OF PRE-REAGENT TREATMENT OF WASTE WATER FROM BREWERY

2021 ◽  
Vol 11 (3) ◽  
pp. 56-61
Author(s):  
Ekaterina Yu. TUKTASHEVA
Keyword(s):  
Waste Water ◽  
Research Results ◽  
Effi Ciency ◽  
Reagent Treatment ◽  
Comparative Results ◽  
The Cost

The purpose of this research was to determine the effectiveness of the reagent treatment of wastewater from breweries. The object of the study was the wastewater of the Samara brewery. To achieve this goal, a trial coagulation of the original wastewater of the brewery was carried out using six diff erent reagents. During the experiment, the optimal doses of each coagulant were determined. It was found experimentally that the maximum effi ciency of coagulation was 34 % in terms of COD. Comparative results of the reagent treatment with various coagulants showed that an increase in the reagent dose over 150 mg / l in terms of Me2O3 did not lead to an increase in the purifi cation effi ciency, however, the cost of purifi ed water signifi cantly increased. The research results were used in the development of a cleaning scheme for the brewery in Samara.

Denitrification of Sewage Effluents in Deep Bed Sand Filters

1993 ◽  
Vol 27 (5-6) ◽  
pp. 381-390 ◽  
Author(s):  
John Upton
Keyword(s):  
Waste Water ◽  
Pilot Study ◽  
Water Industry ◽  
Trickling Filter ◽  
Sand Filters ◽  
The United Kingdom ◽  
The Usa ◽  
Water Plants ◽  
The Cost ◽  
Pilot Plant Study

The European waste water industry will need to develop denitrification processes to remove nitrogen as pressures increase to reduce nutrient levels discharged in effluents. In the USA deep bed filter technology has been used extensively to provide denitrification to levels less than 5 mg/l TN. This paper describes this technology and the full scale performance at some waste water plants in Florida, USA. This paper also describes a pilot study in the United Kingdom at Severn Trent Water. The results of the pilot plant study indicate that denitrification in deep bed sand filters is a sound robust technology using methanol addition. Nitrogen removals greater than the 70% required in the EC Directive 1991 are possible at winter sewage temperatures. The process is most suitable for achieving nitrogen removal at trickling filter plants. The cost of methanol addition is calculated to be ₤10/1000m3.

scholarly journals OPTIMALISASI PENDISTRIBUSIAN BARANG DI PT.SINAR NIAGA SEJAHTERA PALU MENGGUNAKAN METODE GOAL PROGRAMMING

2018 ◽  
Vol 15 (1) ◽  
pp. 77-85 ◽  
Author(s):  
B Hidaen ◽  
A I Jaya ◽  
Resnawati Resnawati
Keyword(s):  
Goal Programming ◽  
Programming Model ◽  
Volume Distribution ◽  
Research Results ◽  
Distribution Costs ◽  
Goal Programming Model ◽  
The Cost ◽  
Distribution Cost

PT.Sinar Niaga Sejahtera isone ofdistributorin Palu who distribute products to a variety of shops. Goal Programming is a method that can solve the problem with more than one purposes. The purposes of this study are  to maximize the number of the car and minimize the distribution  cost of  PT.Sinar Niaga Sejahtera. Goal Programming model formulationin this research consistsof 6 priorities and 6 function constraints. The sixth priorities are,warehous capacity, the number of cars used to the distribution of goods to store Sinar Kasih II,store Cahaya Indah, store Bintang  Rezeki, store Hi. Abdullah, and a minimum distribution costs. Constraint functions consist of a number of cars and the cost of distribution. The research results showed that the supply of goods by the warehouse capacity that can fulfiil the necessary distribution of goods during the month amounted to 136.93 or 8.628 box Optimal volume distribution of goods in each store are sequentially Sinar Kasih II which is 2 units with a capacity of 4  or 252 box, Cahaya Indah 3 units with a capacity of 7  or 441 box, Hi. Abdullah 2 units with a capacity of 12 or 756 box and Star 2 cars Rezeki capacity of 4 . This model can save the distribution costs of Rp. 7.127.147 from the previous distribution costs of Rp. 35.000.000.

scholarly journals ABOUT FEATURES OF WATER CONSUMPTION CALCULATION WHEN DESIGNING WATER SUPPLY SYSTEMS OF HIGH-RISE BUILDINGS

2020 ◽  
Vol 10 (2) ◽  
pp. 29-35
Author(s):  
Sayriddin Sh. SAYRIDDINOV
Keyword(s):  
Water Supply ◽  
Water Consumption ◽  
Water Supply Systems ◽  
High Rise ◽  
Advantages And Disadvantages ◽  
Supply And Distribution ◽  
Effi Ciency ◽  
The Cost ◽  
Supply Systems ◽  
Research And Design

This article discusses the hydraulic and technological features of calculating water consumption when designing water supply systems for high-rise buildings in order to increase the effi ciency of water supply and distribution in a given projected object. The basic criteria for the operation of water supply systems for high-rise buildings in accordance with modern requirements of regulatory documents are given. The technological need is justifi ed and completed operational, technological and feasibility analysis of the applicability of methods determination of water consumption to improve the effi ciency of water supply systems of high-rise buildings. Advantages and disadvantages of methods for determining the cost of internal water supply performed by various research and design institutes are indicated.

Hydrogen peroxide assisted electrocoagulation treatment of rice gain based biodigester effluent: mechanism, performance, and cost analysis

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Savita Dubey ◽  
Amita Joshi ◽  
Rashmi Trivedi ◽  
Parmesh Kumar Chaudhari ◽  
Dharm Pal ◽  
...  
Keyword(s):  
Waste Water ◽  
Hydrogen Peroxide ◽  
Energy Consumption ◽  
Harmful Effect ◽  
Operating Conditions ◽  
Iron Electrode ◽  
Optimum Operating ◽  
Aluminum Electrode ◽  
Aquatic Life ◽  
The Cost

Abstract In the current scenario treatment of industrial waste water is big challenge especially waste water that contain high organic load. Hydrogen peroxide assisted electrocoagulation (EC) process provides better result to treat highly polluted wastewater as compared to EC alone. However, hydrogen peroxide is well known as a strong oxidant, which cast a potential threat to human health. To overcome this problem hydrogen peroxide has been used here for treatment of wastewater in small quantity, and that consume during the process. Therefore the harmful effect of hydrogen peroxide in human and aquatic life could be minimized. This work is an attempt to treat biodigester effluent (BDE) using H2O2 assisted EC processes with respect to chemical oxygen demand (COD) and color reductions. To perform this experiment both iron and aluminum electrodes are used as an electrode material in the presence of H2O2. In case of iron electrode the maximum COD and color reduction efficiency of 98.3 and 83.6% was achieved at the cost of 1.5 Wh/dm3 energy consumption while maximum COD and color removal efficiency of 96.8 and 77.1% with 1.7 Wh/dm3 of energy consumption was observed in the aluminum electrode based EC process. A part from this conventional biological process (i.e., activated sludge treatment, ponds, and lagoon etc.) and physiochemical treatment process (i.e., coagulation, adsorption) provided treatment efficiency of 40–80% hence hydrogen peroxide assisted EC process should a better choice to treat distillery effluent. Furthermore, hybrid EC process was also performed with iron used as anode and aluminum as cathode in the presence of H2O2. Iron electrode based peroxi-EC process provided better result at optimum operating conditions; current density of 114 A/m2, initial COD concentration of 12,000 mg/dm3, initial pH of 7.3, H2O2 concentration of 120 mg/dm3, stirring speed of 120 rpm and electrolysis time of 90 min. The cost estimated for operation is 1.56 US $/m3. Finally, sludge analysis and cost optimization are also incorporated in this article.

Improvement of Efficiency of Waste Water Treatment from Metals Using Flotation Combines

2020 ◽  
Vol 24 (10) ◽  
pp. 4-7
Author(s):  
B.S. Ksenofontov ◽  
A.S. Kozodayev ◽  
R.A. Taranov ◽  
M.S. Vinogradov
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Local Treatment ◽  
Experimental Studies ◽  
Treatment Unit ◽  
Reagent Treatment ◽  
Treatment Facilities ◽  
Technical Solutions

The work deals with the use of flotation combines for the treatment of waste water from heavy metals. The analysis of various methods of treatment of waste water from heavy metals was carried out, which revealed the most promising technical solutions with their possible implementation for modernization of existing treatment facilities of the enterprise. Experimental studies of several versions of technological schemes were carried out on the basis of which a technological scheme of waste water treatment was selected, including all positions of equipment existing at local treatment facilities, and supplemented with a reagent treatment unit, treatment in a flotation complex using reagents, application of filters and pH correction.

Performance Management of the Organization's Personnel on the Example of a Joint-Stock Company «Ulan-Ude Aviation Plant (JSC U-UAZ»)

2019 ◽  
Vol 8 (5) ◽  
pp. 74-77
Author(s):  
O. Kaurova
Keyword(s):  
Performance Management ◽  
Working Conditions ◽  
Joint Stock Company ◽  
Stock Company ◽  
Organization Of Work ◽  
Regional Characteristics ◽  
Personnel Costs ◽  
Effi Ciency ◽  
The Cost ◽  
Integral Indicator

The article describes the concept of “performance management” through the audit of personnel; the defi nition of the audit of personnel, taking into account regional characteristics. The materials of the audit of personnel at the Ulan-Ude Aviation plant are presented. The main problem of large enterprises is the cost of personnel, so the main focus of this study is the audit of personnel costs. Staff costs of the organization — generally recognized for countries with market economies, an integral indicator that includes a set of costs associated with the attraction, remuneration, incentives, solving social problems, organization of work and improvement of working conditions of staff , which ultimately aff ects the effi ciency of staff . In this regard, the author analyzed labor indicators and identifi ed methods to reduce personnel costs.

TIME REDUCTION TESTS OF RELIABILITY ELECTRICAL EQUIPMENT

2020 ◽  
pp. 60-68
Author(s):  
A.Y. Rusin ◽  
Keyword(s):  
Electrical Equipment ◽  
Testing Equipment ◽  
Research Results ◽  
Time Reduction ◽  
The Cost

It is noted that improving materials and technologies leads to increased reliability of electrical equipment. It is shown that аt the same time, the time for testing new equipment samples for reliability increases and the cost of carrying them out increases. Research results are given that can reduce the time of testing equipment for reliability.

Research of Ceramic Raw Materials Classification Base on Multivariate Chart Method

2012 ◽  
Vol 246-247 ◽  
pp. 1066-1070
Author(s):  
Yong Zheng Zhou ◽  
Ru Dong Ouyang ◽  
Han Jun Wu ◽  
De Juan Kong
Keyword(s):  
Trigonometric Polynomial ◽  
Industrial Production ◽  
Raw Materials ◽  
Economic Benefits ◽  
Cost Of Transport ◽  
Research Results ◽  
The Cost

In this paper, it was discussed the Rader chart, trigonometric polynomial graph and the constellation graph which can be programmed and realized by MATLAB SOFEWARE and got it applied in the research of Ceramic Raw Materials classification used the replacing theory of same type kaolin to reduce the cost of raw materials and reduce the cost of transport. To improve the economic benefits of the production of ceramic enterprises, and the research results will be widely applied in industrial production for the purpose of guiding ceramic.

scholarly journals Research Results for the Tornado Wind Energy System: Analysis and Conclusions

1985 ◽  
Vol 107 (1) ◽  
pp. 78-87
Author(s):  
E. W. Jacobs
Keyword(s):  
Wind Energy ◽  
System Analysis ◽  
Energy System ◽  
Power Coefficient ◽  
Research Results ◽  
Air Supply ◽  
Cost Of Energy ◽  
Energy System Analysis ◽  
Wind Energy System ◽  
The Cost

The Tornado Wind Energy System (TWES) concept utilizes a wind-driven vortex confined by a hollow tower to create a low-pressure core intended to serve as a turbine exhaust reservoir. The turbine inlet flow is provided by a separate ram air supply. Numerous experimental and analytical research efforts have investigated the potential of the TWES as a wind energy conversion system (WECS). The present paper summarizes and analyzes much of the research to date on the TWES. A simplified cost analysis incorporating these research results is also included. Based on these analyses, the TWES does not show any significant promise of improving on either the performance or the cost of energy attainable by conventional WECS. The prospects for achieving either a system power coefficient above 0.20 or a cost of energy less than $0.50/kWh (1979 dollars) appear to be poor.

scholarly journals Kajian Teknis Waktu dan Biaya pada Perbandingan Struktur Atap Kayu dan Struktur Atap Baja Ringan. (Hal. 118-129)

2019 ◽  
Vol 5 (1) ◽  
pp. 118
Author(s):  
Muhamad Aldiansyah ◽  
Katarina Rini Ratnayanti ◽  
Erma Desmaliana
Keyword(s):  
Wood Material ◽  
Main Structure ◽  
Research Results ◽  
Wooden Structure ◽  
Roof Structure ◽  
Roof Truss ◽  
Cold Formed Steel ◽  
The Cost ◽  
Wood Strength ◽  
Main Material

ABSTRAKRangka atap pada umumnya menggunakan material kayu sebagai struktur utamanya, tetapi kayu merupakan bahan yang didapatkan dari alam, jika digunakan terus menerus maka kayu akan habis. Maka dari itu produsen mencari altenatif lain yang dapat menggantikan kayu sebagai material utama membentuk struktur atap. Dibuatlah baja ringan sebagai pengganti material kayu yang semakin lama semakin langka dan juga mahal. Penelitian ini bertujuan untuk mengetahui perbandingan kekuatan, biaya, dan waktu antara struktur atap kayu dengan struktur atap baja ringan sehingga dapat dipilih struktur mana yang lebih baik dipilih. Hasil penelitian menunjukan kekuatan struktur kayu lebih baik dibandingkan dengan baja ringan, untuk berat struktur baja ringan lebih ringan sebesar 25,11%, untuk biaya baja ringan bisa menghemat 17,93% biaya, sedangkan untuk waktu pelaksanaan kayu dan baja ringan sama-sama 85 hari. penilaian total kayu mendapatkan 1,5 poin sedangkan baja ringan mendapatkan 2,5 poin, sehingga material yang baik dipilih adalah baja ringan.Kata Kunci: baja ringan, kayu, kekuatan, biaya, waktu ABSTRACTIn general, roof truss using wood as its main structure, but wood is obtained from nature, if used continuously then the wood will be runs out. Therefore manufacturers are looking for other alternatively cansubtitute wood as the main material to form the roof structure. Cold formed steel was made to substitute wood material which is getting increasingly scarce and expensive as well. This research aims to find out a comparison of strength, cost, and time between the wooden roof structure with cold formed steel roof structure so that structure can be choosen which is the better one. Research results showed the strength of the wooden structure is better compared cold formed steel, for the weight of the structure cold formed steel lighter than wood, for the cost of cold formed steel 17,93% could save costs, for the timing of the implementation of wooden and cold formed steel is same need 85 days. Assestment of total wood get 1,5 points while cold formed steel get 2,5 points, so a better material chosen is cold formed steel.Keywords: cold formed steel, wood, strength, cost, time

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