scholarly journals Determination and classification of pollutants in waste water

2021 ◽  
Vol 9 (2) ◽  
Author(s):  
Filip Kraic ◽  
Zuzana Királyová ◽  
Ján Mocák
Keyword(s):  
Waste Water ◽  
Data Analysis ◽  
Correlation Analysis ◽  
Statistical Methods ◽  
Total Nitrogen ◽  
Water Samples ◽  
Waste Waters ◽  
Time Period ◽  
Long Time

This paper deals with waste waters produced by industrial producers during recent three years. Its main purpose is to evaluate the data monitored from discharges of three leather plants where eight traditional variables (COD, BOD, insoluble matters, pH, and the concentrations of ammonia, total nitrogen, chromium and sulphides) were regularly analyzed and quantified. Chemometrical and statistical methods were approved as very useful tools for characterization and classification of various kinds of water samples considering the environmental and metrological aspects. For this purpose, multivariate (multidimensional) techniques of data analysis and correlation analysis were especially very useful. The mentioned techniques are used in this work to (1) reveal the concealed interrelations of the monitored characteristics of waste waters, (2) compare the results of individual waste water producers and find the most important polluting source during a long time period, and (3) derive some generally valid conclusions regarding the observed results.

scholarly journals Exploring the Trophic Spectrum: Placing Mixoplankton Into Marine Protist Communities of the Southern North Sea

2020 ◽  
Vol 7 ◽  
Author(s):  
Lisa K. Schneider ◽  
Kevin J. Flynn ◽  
Peter M. J. Herman ◽  
Tineke A. Troost ◽  
Willem Stolte
Keyword(s):  
Time Series ◽  
Total Nitrogen ◽  
North Sea ◽  
Principle Component Analysis ◽  
Current Knowledge ◽  
The Other ◽  
Southern North Sea ◽  
Long Time ◽  
Plankton Communities

While traditional microplankton community assessments focus primarily on phytoplankton and protozooplankton, the last decade has witnessed a growing recognition of photo-phago mixotrophy (performed by mixoplankton) as an important nutritional route among plankton. However, the trophic classification of plankton and subsequent analysis of the trophic composition of plankton communities is often subjected to the historical dichotomy. We circumvented this historical dichotomy by employing a 24 year-long time series on abiotic and protist data to explore the trophic composition of protist communities in the Southern North Sea. In total, we studied three different classifications. Classification A employed our current knowledge by labeling only taxa documented to be mixoplankton as such. In a first trophic proposal (classification B), documented mixoplankton and all phototrophic taxa (except for diatoms, cyanobacteria, and colonial Phaeocystis) were classified as mixoplankton. In a second trophic proposal (classification C), documented mixoplankton as well as motile, phototrophic taxa associated in a principle component analysis with documented mixoplankton were classified as mixoplankton. In all three classifications, mixoplankton occurred most in the inorganic nutrient-depleted, seasonally stratified environments. While classification A was still subjected to the traditional dichotomy and underestimated the amount of mixoplankton, our results indicate that classification B overestimated the amount of mixoplankton. Classification C combined knowledge gained from the other two classifications and resulted in a plausible trophic composition of the protist community. Using results of classification C, our study provides a list of potential unrecognized mixoplankton in the Southern North Sea. Furthermore, our study suggests that low turbidity and the maturity of an ecosystem, quantified using a newly proposed index of ecosystem maturity (ratio of organic to total nitrogen), provide an indication on the relevance of mixoplankton in marine protist communities.

A Review of Wagner’s Law with Disaggregated Data for Spain

2020 ◽  
Vol 66 (1) ◽  
pp. 65-92
Author(s):  
Manuel Jaén-Garcia
Keyword(s):  
Structural Breaks ◽  
Public Spending ◽  
Unit Roots ◽  
Extended Period ◽  
Wagner’S Law ◽  
Time Period ◽  
Long Time ◽  
Disaggregated Data ◽  
Wagner's Law

Wagner’s Law has been widely tested using empirical analysis, yet very few studies have conducted this analysis using disaggregated data over an extended period of time. This study examines the economic classification of public spending (COFOG) in Spain for the period 1958 – 2015. Our findings confirm previous results in the sense that the law is not rejected for public spending as a whole. Furthermore, our results reveal that social aid and current transfers can be considered as luxury goods as their demand grows more than proportionally when income rises. Our findings also confirm the results of other studies in which education, healthcare and social aid all fail to reject Wagner’s Law. The study provides two important contributions to the literature. First, the study considers a substantially long time period to examine the relationship between different categories of public spending and economic growth. This type of analysis has been carried out on occasion for other economies but never for the Spanish case. Second, our study uses the methodology of unit roots and cointegration with structural breaks, representing an innovation in this field.

scholarly journals Membrane Technologies as Environmentally Safe Methods of Waste Water Purification

2021 ◽  
pp. 037-043
Author(s):  
I. V. Khorokhorina ◽  
S. I. Lazarev ◽  
S. M. Bidulya
Keyword(s):  
Waste Water ◽  
Water Purification ◽  
Industrial Waste ◽  
Waste Waters ◽  
Liquid Media ◽  
Chemical Purification ◽  
Environmentally Safe ◽  
Membrane Technologies ◽  
Membrane Methods

A classification of chemical purification technologies, membrane processes, depending on the pore size in membranes is given. It has been established that environmentally friendly membrane methods for separating liquid media are an alternative to traditional methods for separating technological solutions and industrial waste waters.

scholarly journals Identifikasi Perjanjian Kerja Karyawan Kontrak Menurut Undang-undang Nomor 13 Tahun 2003 tentang Ketenagakerjaan di PT. Bima Budidaya Mutiara (BBM) Desa Piong Kecamatan Sanggar Kabupaten Bima

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Saddam Saddam
Keyword(s):  
Data Analysis ◽  
Qualitative Data ◽  
Collection Method ◽  
Employment Contract ◽  
Contract Employees ◽  
Time Period ◽  
Time Work ◽  
Long Time ◽  
Three Stages ◽  
Qualitative Data Collection

Lately, the arising problems in an internal company, from pattern making to culminate in unrest will contract employees in the company's status as a reasonably long time. Empowerment of employees contract in effect executed in full, but the employees who belong to particular time work agreements are not fully hired thoroughly. Up to now, there are indications the granting of jobs generally passes regardless of the official rules of the applicable employment contract agreement. The method used was qualitative. Data collection method using observation, documentation, interviews, and triangulation. Data analysis was conducted in three stages namely data reduction, the presentation of the data, and draw conclusions. The results showed that certain time work agreements first and further led to the emergence of the rights and obligations of the parties. There are a number of principles in the implementation of the employment contract agreement is not yet based on the procedure of employment rules. The incidence of unrest because of a few things: a surfeit of employees will be a contract worker status for too long, the company less heed to the things that can be counted as wages, and the pattern of the Division of work within the time period for contract employees in the realm of shifts. The company's efforts in coping with disquiet the contract employee will do some of the following, namely; the efforts of some employees into contract adoption workers, pay attention to things that can be counted as wages, and equitable patterns of Division of the period of time in work for the employee's contract in the realm of shifts.

PHYSICO-CHEMICAL ASPECTS OF YAMUNA RIVER AT GOKUL BARRAGE, MATHURA (UP) INDIA

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
AJAY KUMAR RAJAWAT ◽  
PRAVEEN KUMAR
Keyword(s):  
Water Samples ◽  
Suspended Solids ◽  
Total Dissolved Solids ◽  
Tolerance Limit ◽  
Chemical Condition ◽  
Yamuna River ◽  
Dissolved Solids ◽  
Time Period ◽  
Physico Chemical ◽  
Almost All

An attempt has been made to study the Physico-chemical condition of water of Yamuna River at Gokul Barrage, Mathura, (UP). The time period of study was July 2015 to June 2016. Three water samples were selected from different sites in each month for study. The parameters studied were Temperature, Turbidity, pH, DO, BOD, COD, Total Dissolved Solids and Suspended Solids. Almost all the parameters were found above the tolerance limit.

Program Fajar Indah Sebagai Media Dakwah dalam Meningkatkan Pemahaman Keagamaan Masyarakat

2020 ◽  
Vol 5 (1) ◽  
pp. 21-38
Author(s):  
FAISAL AKBAR ◽  
Syamsuddin RS ◽  
Dadan Anugrah
Keyword(s):  
Qualitative Research ◽  
Data Analysis ◽  
Data Collection ◽  
Islamic Law ◽  
Public Trust ◽  
Broadcast Communication ◽  
Lecture Method ◽  
Radio Broadcast ◽  
Religious Understanding

Penelitian ini bertujuan untuk mengetahui metode Program Fajar Indah yang ada di Radio Citra Progo dalam meningkatkan pemahaman keagamaan masyarakat, mengetahui klasifikasi da’i pengisi program Fajar Indah, serta pesan dakwah dari program Fajar Indah. Penelitian ini menggunakan penelitian kualitatif dengan metode deskriptif. Pengumpulan data dalam penelitian ini menggunakan teknik observasi, wawancara dan dokumentasi. Analisis data digunakan penafsiran logika yang dihubungkan dengan konteks Komunikasi Penyiaran Islam. Hasil penelitian menunjukan bahwa Radio Citra Progo dalam program Fajar Indah menggunakan metode ceramah dengan pembawaan da’i yang santai ketika siaran. Adapun klasifikasi da’i dalam siaran dakwah ini, dapat dilihat dari wawasan keilmuan penyiar dalam menguasai Al Quran dan Hadist sebagai sumber hukum Islam dan kedisiplinan untuk menjalankan tugas sebagai da’i penyiar radio. Dalam siaran Program Fajar Indah terdapat pesan dakwah berupa materi Aqidah untuk meningkatkan kepercayaan masyarakat kepada Allah, mengimani rukun Iman dan rukun Islam, serta materi Akhlak yang diperintahkan oleh Allah dan dicontohkan oleh Nabi Muhammad SAW, materi Ibadah yang menyampaikan tatacara beribadah kepada Allah meliputi hukum pernikahan, hukum bertetangga, shodaqoh, sholat, puasa dan menyampaikan materi tentang hari-hari besar umat Islam. This study aims to determine the methods of the Beautiful Fajar Program on Radio Citra Progo in improving people's religious understanding, knowing the classification of preachers for the Fajar Indah program, and preaching messages from the Fajar Indah program. This study uses qualitative research with descriptive methods. Data collection in this study uses observation, interview and documentation techniques. Data analysis used the interpretation of logic connected with the context of Islamic Broadcast Communication. The results showed that Citra Progo Radio in the Fajar Indah program used a lecture method with a relaxed nature when broadcasting. The da'i classification in this da'wah broadcast, can be seen from the broadcaster's scientific insights in mastering the Qur'an and Hadith as a source of Islamic law and discipline to carry out their duties as radio broadcast preachers. In the broadcast of the Fajar Indah Program there is a da'wah message in the form of Aqeedah material to increase public trust in God, faith in the pillars of faith and pillars of Islam, as well as moral material ordered by God and exemplified by the Prophet Muhammad, the material of worship which conveys the procedure of worship to God including marriage law , neighborly law, shodaqoh, prayer, fasting and delivering material about the Muslim holidays.

The new technology of waste water treatment by using bioreactors with bio membranous movable bed – biochips

2020 ◽  
Vol 10 (3) ◽  
pp. 276-292
Author(s):  
Maria Y. Savostyanova ◽  
◽  
Lidia А. Norina ◽  
Arina V. Nikolaeva ◽  
◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Water Resources ◽  
Waste Water Treatment ◽  
Combined Treatment ◽  
Research Work ◽  
Pollution Level ◽  
Waste Waters ◽  
Treatment Facilities ◽  
Movable Bed

Retaining of water resources quality is one of the global ecological problems of the modern time. The most promising direction in solving the problem of water resources protection is the reduction of negative environmental influence of waste water from production facilities by upgrading the existing water treatment technologies. To treat utility water, technical and rain water from site facilities of Transneft system entities, the specialists developed and approved standard technological diagrams, which are used in producing treatment facilities. The standard technological diagrams provide for all necessary stages of waste water treatment ensures the reduction of pollution level to normal values. However, during operation of treatment facilities it was established, that to ensure the required quality of waste water treatment with initially high levels of pollution, the new technological solutions are necessary. The author presents the results of scientific-research work, in the context of which the best affordable technologies were identified in the area of the treatment of waste water with increased content of pollutants and non-uniform ingress pattern. On the basis of the research results the technical solutions were developed for optimization of operation of existing waste water treatment facilities by means of using combined treatment of technical and rain waters and utility waste waters and applying bioreactor with movable bed – biochips. The use of bioreactor with movable bed allows the increase in the area of active surface, which facilitates increase and retention of biomass. Biochips are completely immersed into waste waters, and biofilm is formed on the entire volume of immersion area, facilitating retention of biomass and preventing formation of sediments. Due to mixing the floating device with biofilm constantly moves along the whole area of bioreactor, and, in doing so, speeds up biochemical processes and uniformity of treatment. The advantages of a bioreactor with movable bed – its active sludge durability against increased and changing pollutant concentrations, change of waste water temperature and simplicity of application – ensured the possibility of its use for blending utility waters, technical and rain waters.

Composting of Sewage Sludge of Moscow Waste Water Treatment Plants Using Recycling Filler

2007 ◽  
Vol 2 (1) ◽  
Author(s):  
D.A. Danilovich ◽  
M.N. Kozlov ◽  
V.I. Sklyar ◽  
Yu.A. Nikolaev ◽  
N.M. Shchegolkova ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Maximum Temperature ◽  
Waste Waters ◽  
Organic Additives ◽  
Organoleptic Properties ◽  
Water Treatment Plants ◽  
Waste Water Treatment Plants ◽  
The City

This work demonstrates a possibility of composting of municipal waste waters sludge (WWS) digested during 5-7 days, of the Kuryanovo waste water treatment plants (the city of Moscow) without the use of traditional organic additives – sawdust, peat, thatch. As a recycling filler (repeatedly used), enhancing the porosity of the composted mixture, ribbed polyethylene spheres (∅=8 cm) and wood chips (having dimension of 5-10 cm) were used. Composting was performed efficiently in both cases, however, the use of wood ships had technological and economical advantages. The process of composting was carried out during 2-4 weeks and was composed of classical phases of active heating (a rate of 0.2-0.3oC/h was obtained), maintaining of maximum temperature during 1-2 days, and cooling down to the ambient temperature. During the course of composting, a product was obtained, having attractive organoleptic properties, suitable for application in municipal laying-out of greenery.

Occurrence and Removal of Cryptosporidium spp. Oocysts and Giardia spp. Cysts in Kenyan Waste Stabilisation Ponds

1993 ◽  
Vol 27 (3-4) ◽  
pp. 97-104 ◽  
Author(s):  
A. M. Grimason ◽  
H. V. Smith ◽  
W. N. Thitai ◽  
P. G. Smith ◽  
M. H. Jackson ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Samples ◽  
Laboratory Experiments ◽  
Municipal Waste ◽  
Retention Period ◽  
Waste Stabilisation Ponds ◽  
Cryptosporidium Spp ◽  
Physico Chemical ◽  
Microbiological Parameters ◽  
Final Effluent

This study was designed to determine tlie occurrence and removal of Cryptosporidium spp. oocysts and Giardia spp. cysts, in municipal waste-water by waste stabilisation ponds in tlie Republic of Kenya. Eleven waste stabilisation pond systems located in towns across Kenya were included. A total of 66 waste-water samples were examined for the presence of oocysts and cysts, comprising 11 raw waste-water and 55 pond effluent samples over a two month period. Cryptosporidium spp. oocysts were detected in 6 and Giardia spp. cysts in 9 of the designated pond systems analysed demonstrating their ubiquitous nature throughout Kenya. Oocyst levels detected in raw waste-water samples ranged from 12.5 - 72.97 oocysts/l and various pond effluents between 2.25 - 50 oocysts/l. Cyst levels detected in raw waste-water samples ranged from 212.5 to 6212.5 cysts/l and in various pond effluents from 3.125 to 230.7 cysts/l. No Cryptosporidium spp. oocysts were detected in the final effluent from any pond systems studied (11/11). Whereas no Giardia spp. cysts were detected in the final effluent from 10 of 11 waste stabilisation pond systems studied, one pond system was found to be consistently discharging cysts in the final effluent at concentrations ranging from 40 to 50 cysts/l. The minimum retention period for the removal of Cryptosporidium spp. oocysts and Giardia spp. cysts was 37.3 days. Laboratory experiments were performed to assess physico-chemical and microbiological parameters to express relationships between pond performance and protozoa removal.

Discharge of Stable Organic Substances from the Chemical Industries

1994 ◽  
Vol 29 (9) ◽  
pp. 179-185 ◽  
Author(s):  
Åke Undén
Keyword(s):  
Waste Water ◽  
Organic Substances ◽  
Waste Waters ◽  
Major Chemical

In a programme started in 1988, the waste water discharges from the major chemical industries in Sweden have been investigated. The primary objectives were to gather information on the major sources of such discharges and to initiate action so as to achieve significant reductions where required. In this paper the investigation programme is presented together with some early conclusions. As could be expected there are no simple common rules for these industries, each effluent should be considered as a separate problem. It was concluded that these waste waters were in most cases more toxic than was acceptable, and that further purifying measures were required in these cases.

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