Control of heavy metal emission from metal plating industry in a german river basin

1998 ◽  
Vol 38 (4-5) ◽  
pp. 121-129 ◽  
Author(s):  
Harro Bode
Keyword(s):  
Heavy Metal ◽  
Industrial Effluents ◽  
Wastewater Sludge ◽  
Industrial Emissions ◽  
Limit Values ◽  
Metal Plating ◽  
Receiving Waters ◽  
Agricultural Use ◽  
Heavy Metal Emissions

The introduction of clear limits for the indirect discharge of heavy metals in Germany has greatly reduced the emissions from metal plating industry. Despite the more than 500 metal plating workshops within the Ruhr catchment area the current requirements for water quality of riverwater are met in the Ruhr (even the German limit values for drinking water are met). Nevertheless the industrial emissions into the sewers are still above the permitted level and above what routine checks of the industrial effluents lead to believe. Thus with respect to the German wastewater sludge regulation half of the dry sludge solids must be excluded from agricultural use. The complete implementation of legal requirements by all workshops will further diminish the heavy metal emissions into wastewater sludge and receiving waters.

scholarly journals Potential of anaerobic co-digestion in improving the environmental quality of agro-textile wastewater sludge

2020 ◽  
Author(s):  
Jean G. Tapsoba ◽  
Hans C. Komakech ◽  
Johnson Odera Ouma
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Environmental Quality ◽  
Oxygen Demand ◽  
Wastewater Sludge ◽  
Effluent Treatment ◽  
Cow Dung ◽  
Biogas Yield ◽  
Textile Sludge

Abstract Sludge from textile effluent treatment plants (ETP) remains a challenge for many industries due to inefficient and limited waste management strategies. This study explores the potential of using anaerobic digestion (AD) to improve the environmental quality of textile ETP sludge. The AD of ETP sludge is affected by the low C/N ratio (3.7), heavy metal content, and toxicity. To improve the process, co-digestion of ETP sludge with different substrates (sewage sludge, cow dung, and sawdust) under mesophilic conditions (37 °C), followed by a thermochemical pretreatment was assessed. The results showed that anaerobic co-digestion of the textile sludge with the co-substrates is effective in reducing pollution load. It was found that organic matters degraded during the 30-day AD process. The chemical oxygen demand and biological oxygen demand reduction was in the range of 33.1–88.5% and 48.1–67.1%, respectively. Also, heavy metal (cadmium, lead, iron, and, mercury) concentration was slightly reduced after digestion. Maximal biogas yield was achieved from co-digestion of textile sludge and sewage sludge at a mixing ratio of 3:1, 1:1, and 1:3, and methane content was respectively 87.9%, 68.9%, and 69.5% of the gas composition. The results from this study show that co-digestion will not only reduce the environmental pollution and health risks from the textile industry but also recover useful energy.

scholarly journals Heavy Metal Pollution and Chemical Profile of Cauvery River Water

2009 ◽  
Vol 6 (1) ◽  
pp. 47-52 ◽  
Author(s):  
Abida Begum ◽  
M. Ramaiah ◽  
Harikrishna ◽  
Irfanulla Khan ◽  
K. Veena
Keyword(s):  
Heavy Metal ◽  
River Water ◽  
Metal Concentration ◽  
Industrial Effluents ◽  
Heavy Metal Concentration ◽  
Cauvery River ◽  
Fish Muscles ◽  
High Carbonate ◽  
Cr Concentration

Analysis of water, plankton, fish and sediment reveals that the Cauvery River water in the downstream is contaminated by certain heavy metals. Water samples have high carbonate hardness. Concentrations of all elements and ions increase in the downstream. Main ions are in the following order: Na > HCO3>Mg > K > Ca> Cl > SO4. Heavy metal concentration in water was Cr >Cu ≈ Mn > Co > Ni > Pb > Zn, in fish muscles Cr > Mn > Cu > Ni > Co > Pb ≈ Zn, in phytoplanktens Co > Zn > Pb > Mn > Cr and in the sediments the heavy metal concentration was Co > Cr > Ni ≈ Cu > Mn > Zn > Pb. Although, the quality of Cauvery River may be classified as very good based on the salt and sodium for irrigation, Zn, Pb and Cr concentration exceeded the upper limit of standards. Metal concentrations in the downstream indicate an increase in the pollution load due to movement of fertilizers, agricultural ashes, industrial effluents and anthropogenic wastes. An immediate attention from the concerned authorities is required in order to protect the river from further pollution.

Options and limits of quantitative and qualitative online-monitoring of industrial discharges into municipal sewage systems

2009 ◽  
Vol 60 (4) ◽  
pp. 859-867 ◽  
Author(s):  
H. Hoppe ◽  
S. Messmann ◽  
A. Giga ◽  
H. Grüning
Keyword(s):  
Uncertainty Analysis ◽  
Online Monitoring ◽  
Treatment Plant ◽  
Municipal Sewage ◽  
Limit Values ◽  
Industrial Enterprises ◽  
Receiving Waters ◽  
Sewage Systems ◽  
Pollution Loads

In some cities, industrial enterprises' discharges into municipal sewage systems have a major impact on the quantity and quality of inflows to the municipal treatment plants. In many cases, industrial discharges stand out on account of the great fluctuations in their volumetric rates of flow, pollution loads and temperatures. As a result, these discharges put a great strain on the sewage system, the treatment plant, and ultimately the receiving waters. The enterprises concerned have to pay the treatment plant operators fees based on the load and/or volume discharged. In most cases, qualitative monitoring operations merely consist of spot checks. This means that continuously surveillance is not possible and infringements of the permissible limit values are only discovered by accident. If impermissible discharges are carried out that may be susceptible to causing a treatment plant failure, the rapid initiation of countermeasures is not possible. Hence, spectrometer probes and mobile flowmeters were used in order to determine volumetric rates of flow, COD concentrations, and ultimately the loads discharged. The possibilities for, and limits to, online monitoring as well as shortcomings of spot-checks are discussed in the course of this paper, which also includes an uncertainty analysis.

Risk Assessment of Chemical Pollution of Industrial Effluents From A Soap Production Plant Located In Bafoussam (Western Region of Cameroon)

2021 ◽  
Author(s):  
Zoyem Gouafo Mathurin ◽  
Talla Pierre Kisito
Keyword(s):  
Drinking Water ◽  
Oxygen Demand ◽  
Industrial Effluents ◽  
Chemical Pollution ◽  
Production Plant ◽  
Limit Values ◽  
The People ◽  
Soap Production ◽  
State Of Affairs

Abstract The MEWOU river, which runs through the town of Bafoussam, is one of the main sources of drinking water and irrigation for the people who live there. It is subject to intense agricultural and industrial activity all along its banks. Soap and refined oil factories generate pollution in the form of liquid effluent which is released without any form of treatment. A total of seven samples were analyzed during the months of March, April and May of the year 2021. The results we obtained were analyzed according to the regulatory requirements recommended by the Guidelines for the quality of drinking water and the Algerian standard relating to the limit values ​​of physicochemical parameters. The results we obtained showed signs of significant pollution in particular: chemical oxygen demand (COD: 125.32-959 mg L-1), 5 days-biochemical oxygen demand (BOD5: 23-99 mg L-1), turbidity (2-520 NTU), TDS (130-13430 mg L-1), Nitrite (4.96-21327.44 mg L-1) and many other parameters greatly exceed those required by the international standard, we have also noted a strong pollution to heavy metals: chromium (35.76- 1381.08 mg L-1), lead (0.21 - 2.49 mg L-1), iron (0.28- 17.82 mg L-1), and cadmium (0 , 03-0.19 mg L-1) which are above the values ​​prescribed by the WHO. These heavily polluted effluents released into the natural environment are harmful to the environment, biodiversity and human health. This state of affairs requires urgent intervention to preserve the ecological balance. Otherwise, it can constitute a risk for public health in the short term by deteriorating the quality of the underground reservoir known as the main source of water supply for the local populations.

Relationship Between the Biological Testing of Industrial Effluents and the Quality of Receiving Waters -Some Canadian Case Studies

1987 ◽  
Vol 22 (2) ◽  
pp. 251-269 ◽  
Author(s):  
T. Dafoe ◽  
J.H. Carey ◽  
S.H. McCrindle ◽  
P.G. Wells ◽  
R.C.H. Wilson
Keyword(s):  
Water Quality ◽  
Pollution Control ◽  
Industrial Effluents ◽  
Case Examples ◽  
Effluent Quality ◽  
Biological Tests ◽  
Receiving Waters ◽  
Water Quality Objectives ◽  
Selection Of

Abstract A summary of selected Canadian experiences in the application of biological tests for controlling and monitoring effluent quality, for setting water quality objectives, and for monitoring receiving waters is presented. ? brief review is made of the approaches for applying biological tests to effluents, to the selection of suitable water quality objectives, and to the conduct of ambient biomonitoring programs. Two case examples from Canada, the Saint John River, New Brunswick, and Canagagigue Creek, Ontario, are evaluated in detail. A number of other Canadian sites where biological tests are being applied are also discussed. The contributions of biological tests on effluents to administrative decisions for pollution control, as well as the limitations of solely using “end of pipe” tests, are emphasized in the paper.

scholarly journals Agricultural use of wastewater sludge from various sources with special emphasis on total and DTPA-extractable heavy metal content

2016 ◽  
Vol 42 (1) ◽  
Author(s):  
Bariş Bülent Aşik ◽  
Cumhur Aydinalp ◽  
Fatma Olcay Topaç Şağban ◽  
Ali Vahap Katkat
Keyword(s):  
Heavy Metal ◽  
Metal Content ◽  
Heavy Metal Content ◽  
Wastewater Sludge ◽  
Agricultural Use

VALORIZATION OF THE URBAN ENVIRONMENT OF SOUTH SERBIA FROM THE AIR QUALITY ASPECT

2018 ◽  
Vol 28 (4) ◽  
pp. 1329-1333
Author(s):  
Miodrag Šmelcerović
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Urban Environment ◽  
Pollution Sources ◽  
Anthropogenic Sources ◽  
Anthropogenic Factors ◽  
Limit Values ◽  
Cause And Effect ◽  
Sources Of Pollution

The protection of the environment and people’s health from negative influences of the pollution of air as a medium of the environment requires constant observing of the air quality in accordance with international standards, the analysis of emission and imission of polluting matters in the air, and their connection with the sources of pollution. Having in mind the series of laws and delegated legislations which define the field of air pollution, it is necessary to closely observe these long-term processes, discovering cause-and-effect relationships between the activities of anthropogenic sources of emission of polluting matters and the level of air degradation. The relevant evaluation of the air quality of a certain area can be conducted if the level of concentration of polluting matters characteristic for the pollution sources of this area is observed in a longer period of time. The data obtained by the observation of the air pollution are the basis for creation of the recovery program of a certain area. Vranje is a town in South Serbia where there is a bigger number of anthropogenic pollution sources that can significantly diminish the air quality. The cause-and-effect relationship of the anthropogenic sources of pollution is conducted related to the analysis of systematized data which are in the relevant data base of the authorized institution The Institute of Public Health Vranje, for the time period between the year of 2012. and 2017. By the analysis of data of imission concentrations of typical polluting matters, the dominant polluting matters were determined on the territory of the town of Vranje, the ones that are the causers of the biggest air pollution and the risk for people’s health. Analysis of the concentration of soot, sulfur dioxide and nitrogen oxides indicates their presence in the air of Vranje town area in concentrations that do not exceed the permitted limit values annually. The greatest pollution is caused by the soot content in the air, especially in the winter period when the highest number of days with the values above the limit was registered. By perceiving the influence of natural and anthropogenic factors, it is clear that the concentration of polluting matters can be decreased only by establishing control over anthropogenic sources of pollution, and thus it can be contributed to the improvement of the air quality of this urban environment.

scholarly journals Virtual flows of aquatic heavy metal emissions and associated risk in China

2019 ◽  
Vol 249 ◽  
pp. 109400 ◽  
Author(s):  
Wei Zhang ◽  
Miaomiao Liu ◽  
Klaus Hubacek ◽  
Kuishuang Feng ◽  
Wenjun Wu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Heavy Metal Emissions
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