Investigation of Drainage and Waste Water Quality for the Improvement of Technological Treatment Solutions

2018 ◽  
Vol 9 (4) ◽  
pp. 824
Author(s):  
Yulia DOMASHENKO ◽  
Sergey VASILYEV ◽  
Dmitry VASILYEV
Keyword(s):  
Waste Water ◽  
Irrigation System ◽  
Treatment Method ◽  
Petroleum Products ◽  
Drainage Water ◽  
Biogenic Elements ◽  
Treatment Technology ◽  
Second Stage ◽  
Holding Device ◽  
Observation Period

The purpose of this work is to study the qualitative indicators of drainage and waste water from irrigated areas in order to justify the treatment technology. The research was carried out within the Bagayevskaya irrigation system located in the Rostov Region, the Russian Federation. The location of the well is confined to the second terrace above the floodplain of the Western Manych River. The chemical composition of drainage water allows us to refer this water category to the sulfate class, the sodium group of a partially mixed cationic composition. The type of drainage water is sulfate sodium and sulfate calcium. In drainage runoff, there are no chlorine-magnesium waters, even in the autumn period. The content of biogenic elements during the observation period in the investigated wells was within the following limits: phosphates – from 0.04 to 0.75 mg/dm3, ammonium ions – from 0.07 to 1.35 mg/dm3, and nitrates – from 0.05 to 0.43 mg/dm3. An improved treatment method of drainage and waste water for crop irrigation is proposed. It includes the removal of mechanical impurities and petroleum products (in the first stage) on coalescent modules installed directly on the discharge or drainage channel in the form of a framework module and the release of heavy metal ions, organic substances and excess salts (in the second stage) in the sorption block, which includes three sorption layers – S-VERAD, zeolite and quartz in an equal ratio, placed in a grid of a filter cassette of the cassette-holding device.

BEST AVAILABLE TECHNIQUES FOR THE WASTE WATER TREATMENT

2021 ◽  
Vol 0 (1) ◽  
pp. 96-107
Author(s):  
Anna V. Yodchyk ◽  
◽  
Sniazhana A. Dubianok ◽  
Keyword(s):  
Waste Water ◽  
Waste Water Treatment ◽  
Treatment Method ◽  
General Information ◽  
Environmental Legislation ◽  
Economic Activities ◽  
Treatment Technology ◽  
Best Available Techniques ◽  
Surface Water Bodies ◽  
The Republic

The necessity of the implementation of the Best available Techniques by nature users determined In the environmental legislation of the Republic of Belarus. The article provides general information on the best available techniques (BAT) and the reasons for their implementation in the Republic of Belarus. Trends in the flow of pollutants as part of waste water into surface water bodies of the country have been analyzed in the context of the main pollutants and types of economic activities of enterprises that discharge the pollutants. Priority factors have been determined when choosing a wastewater treatment technology and a treatment method within the framework of the selected technology.

To the issue of water treatment by hydrocyclone on the systems of the combined irrigation

2020 ◽  
Vol 0 (2) ◽  
pp. 21-25
Author(s):  
Nikolay Dubenok ◽  
Andrey Novikov ◽  
Sergei Borodychev ◽  
Maria Lamskova
Keyword(s):  
Water Treatment ◽  
Organic Compounds ◽  
Irrigation Water ◽  
Irrigation System ◽  
Petroleum Products ◽  
Cylindrical Part ◽  
Agricultural Landscapes ◽  
Treatment Unit ◽  
Drain Pipe ◽  
Irrigation Network

At the stage of water treatment for irrigation systems, the efficiency capture coarse and fine mechanical impurities, as well as oil products and organic compounds affects the reliability of the equipment of the irrigation network and the safety of energy exchange processes in irrigated agricultural landscapes. The violation of work irrigation system can cause disruptions in irrigation schedules of agricultural crops, crop shortages, degradation phenomena on the soil and ecological tension. For the combined irrigation system, a water treatment unit has been developed, representing a hydrocyclone apparatus with a pipe filter in the case. For the capacity of 250 m3/h the main geometrical dimensions of hydrocyclone have been calculated. To organize the capture petroleum products and organic compounds, it has been proposed a modernization of a hydrocyclone unit, consisting in dividing the cylindrical part of the apparatus into two section. The first is section is for input irrigation water, the second one is for additional drainage of clarified irrigation water after sorption purification by the filter, placed on the disk and installed coaxially with the drain pipe and the pipe filter.

Labour-use Efficiency of Assam Gramin Vikash Bank: Branch- and District-level Analysis

2021 ◽  
pp. 232102222110243
Author(s):  
Mohuya Deb Purkayastha ◽  
Joyeeta Deb ◽  
Ram Pratap Sinha
Keyword(s):  
Efficiency Score ◽  
Significant Variable ◽  
Data Envelopment ◽  
Tobit Regression ◽  
Second Stage ◽  
Time Period ◽  
Use Efficiency ◽  
The Mean ◽  
The Impact ◽  
Observation Period

The present study estimated labour-use efficiency of 48 branches of Assam Gramin Vikash Bank at its branch level, covering three districts of Barak Valley, which falls under Silchar region of the bank for the time period from 2010–2011 to 2017–2018. The study applied data envelopment analysis for estimating labour-use efficiency. In the second stage, the study applied censored Tobit regression for determining the impact of several contextual variables on efficiency. The study reveals that the mean labour-use efficiency score of the selected branches is 76% when averaged for the in-sample branches over the observation period. Results of the Tobit regression identified cluster 2 and total business of the branches as the significant factors for determining efficiency and the number of employees as a significant variable influencing inefficiency. JEL Classifications: G2, G20, G21, J3

scholarly journals Influence of an Implant Fixture Including a Freely Removable Micro-Locking Implant Prosthesis on Peri-Implant Tissues and Implant Prostheses: A Prospective Clinical Study

2021 ◽  
Vol 10 (15) ◽  
pp. 3321
Author(s):  
Young-Gun Shin ◽  
Won-Tak Cho ◽  
Ho-Kyung Lim ◽  
Su-Hyun Hwang ◽  
Ji-Hyeon Bae ◽  
...  
Keyword(s):  
Survival Rates ◽  
Treatment Method ◽  
Control Group ◽  
Prospective Clinical Study ◽  
Food Impaction ◽  
Radiographic Findings ◽  
The One ◽  
Implant System ◽  
Experimental Group ◽  
Observation Period

This prospective study was undertaken to evaluate the clinical usefulness of a newly developed one-piece, screw-free, and micro-locking implant system, which was designed to overcome the shortcomings of the existing implant systems. Thirty-eight patients were recruited and randomly and equally assigned to an experimental group (micro-locking one-piece fixture, MLF; n = 19) or a control group (micro-locking abutment, MLA). Cumulative implant survival rates, marginal bone resorptions, probing depths, plaque indices, bleeding indices, and complications were obtained by using clinical and radiographic findings at 6 months and 12 months after prosthesis placement. Complications that occurred multiple times for single implants were counted. During the 12 month observation period, survival rates were 100% in both groups. No significant intergroup differences were observed for marginal bone resorption, probe depth, or bleeding index. However, mean plaque index was significantly lower in the MLF group at 12 months (p < 0.05). During the 12-month observation period, food impaction (26.3%) was the maincomplication in the MLF group and screw loosening (5.3%), prosthesis detachment (5.3%), and food impaction (5.3%) were observed in the MLA group. The results of this study suggest that the one-piece micro-locking implant system offers a predictable treatment method.

Development of the Acidic Mining Wastewater Treatment Technology

2013 ◽  
Vol 295-298 ◽  
pp. 1372-1375 ◽  
Author(s):  
Guang Wei Liu ◽  
Run Cai Bai
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Mining Waste ◽  
Formation Condition ◽  
Research Development ◽  
Treatment Technology ◽  
Acid Mine ◽  
Mining Wastewater

The main formation condition and harmfulness of the acidic mining waste water's were analyzed in this paper. The treatment technology of the acid mine drainage's was briefly introduced. The research development of acid mine drainage was summarized in recent years. It was the fact that developing the efficient, cheap, safe and easy treatment technology of acid mine should be necessary and inevitably and some success management experiences of acidic waste water were applied in acidic mining wastewater.

Research of Treatment Technology for Electroplating Wastewater

2014 ◽  
Vol 487 ◽  
pp. 713-716 ◽  
Author(s):  
Yi Dan Zhou ◽  
Miao Sun ◽  
Li Juan Wang ◽  
Guan Nan Xi
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Electrochemical Method ◽  
Chemical Process ◽  
Biological Treatment ◽  
Chemical Method ◽  
Treatment Technology ◽  
Electroplating Wastewater ◽  
The Common ◽  
Physical And Chemical

The sources and composition of electroplating waste water are summarized. The common wastewater treatment technology, such as physical and chemical method, physic-chemical process, biological treatment and electrochemical method, and so on. Then the vision for the development of electroplating wastewater treatment technology is made.

scholarly journals Screening of Effective Media for Black Soldier Fly Larvae Used in Food Waste Treatment

2020 ◽  
Vol 42 (10) ◽  
pp. 463-471
Author(s):  
Chul-Hwan Kim ◽  
Kwanyoung Ko ◽  
Jongkeun Lee ◽  
Haegeun Chung
Keyword(s):  
Food Waste ◽  
Wheat Bran ◽  
Waste Treatment ◽  
Treatment Method ◽  
Treatment Technology ◽  
Black Soldier Fly ◽  
Black Soldier Fly Larvae ◽  
Fly Larvae ◽  
By Products ◽  
Bean Sprouts

Objectives : Black soldier fly larvae (BSFL) are organisms that effectively decompose various types of organic waste including food waste, and food waste treatment using BSFL is attracting attention as a sustainable waste treatment method. However, food waste discharged from Korea has a wide variety of properties, and its high salt concentration limits its treatment by BSFL. Therefore, to increase the efficiency of food waste treatment using BSFL, it is necessary to increase the quality of food waste as a production medium for BSFL. In this study, the ratio of protein and fat was adjusted by adding bean sprouts and wheat brans to food wastes treated at high temperature under vacuum, and whether such medium is suitable for rearing BSFL was investigated.Methods : To improve the medium, the ratio of protein and fat was adjusted to approximately 2:1 by adding bean sprouts and bran residue to food waste. Subsequently, the growth and development rate of BSFL reared on chicken feed, food waste, food waste + bean sprouts, food waste + wheat bran were measured. Also, the decomposition rate of each medium was analyzed.Results and Discussion : The growth rate of BSFL grown on food waste + wheat bran medium was similar to that of BSFL reared on chicken feed. The speed of development at day 7 was also the fastest for BSFL reared with food waste + wheat bran medium and chicken feed. These results suggest that the mixed medium to which wheat bran has been added to food waste has the potential to be used as a commercial medium for BSFL production. The survival rate of BSFL was 89% or higher in all media.Conclusions : When food waste was used alone, BSFL development was poor compared to that in media combined with agricultural by-products such as bean sprouts and wheat bran. Therefore, to use food waste as a rearing medium of BSFL, it is necessary to adjust the ratio of protein and fat by adding various agricultural by-products and reduce salinity. For the improvement of food waste treatment technology using BSFL, mass rearing of useful insects such as BSFL, and promotion of the use of agricultural by-products, additional research is needed to optimize the composition of rearing medium based on food waste.

scholarly journals ФАРМАКО–ТОКСИКОЛОГІЧНА ОЦІНКА ПРЕПАРАТУ «ЦИФЛУР»

2016 ◽  
Vol 18 (3(71)) ◽  
pp. 214-217
Author(s):  
L.V. Nagorna
Keyword(s):  
Mucous Membrane ◽  
Concentrate Solution ◽  
Intact Skin ◽  
Toxicological Evaluation ◽  
Second Stage ◽  
Test Concentration ◽  
Veterinary Importance ◽  
Oily Solution ◽  
Experimental Preparation ◽  
Observation Period

The results of pharmaco–toxicological evaluation insectoacaricid preparation «Tsiflur», in particular the study of locally irritating effect of the drug on the skin and mucous membranes of rabbits eyes. The preparation «Tsiflur» – representative of synth pyrethroids, in its composition has the active ingredient cyfluthrin, production NPF «Brovafarma». According to the manufacturer's instructions, the preparation recommended for the control of flying midges and other representatives akaroentomofauny that have veterinary importance. The tool is a clear oily solution of a yellowish color.Experimental studies were conducted on rabbits analogues in several stages. In the first phase we studied local irritant effect of the preparation in varying degrees of dilution when applied to intact skin of rabbits. The aim of the second stage of the research was to determine the local irritant effect of the d preparation on the mucous membrane of the eyes of rabbits.It has been established that the preparation «Tsiflur» in the test concentration (1: 100, 1: 200, 1: 400 concentrate solution) during the observation period did not show locally irritating effects in a single application to the intact areas of the skin of rabbits. Monitoring the bellies of the experiment showed no redness, swelling, thickening of the skin folds and the pain response to palpation place application of the preparation. Not set also signs of toxic effects of native preparation «Tsiflur», when applied under similar conditions. The reaction of the skin of animals per application experimental preparation was valued at 0 points. In the study of the preparation in a similar concentration on the possibility of providing local irritant effect on the mucous membrane of the eyes of rabbits determined that the native application of the preparation led to the emergence of a slight reddening of the eye mucosa and the appearance of watery eyes. These symptoms disappear without any intervention on the second day of the experiment. The reaction to the introduction of the preparation «Tsiflur» was estimated at 1 point, for each identified symptom. 

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