scholarly journals Evaluation of wastewater quality index for different Sewage Treatment Zones in Delhi, India

2021 ◽  
Vol 60 (3) ◽  
pp. 549-556
Author(s):  
Prerna Sharma ◽  
Sudipta K. Mishra ◽  
Smita Sood
Keyword(s):  
Quality Index ◽  
Sewage Treatment ◽  
Wastewater Quality

Multi-species plant systems for wastewater quality improvements and habitat enhancement

1996 ◽  
Vol 33 (10-11) ◽  
pp. 231-236 ◽  
Author(s):  
Martin M. Karpiscak ◽  
Charles P. Gerba ◽  
Pamela M. Watt ◽  
Kennith E. Foster ◽  
Jeanne A. Falabi
Keyword(s):  
Municipal Wastewater ◽  
Sewage Treatment ◽  
Giant Reed ◽  
Coliform Bacteria ◽  
Wastewater Management ◽  
Joint Project ◽  
Pima County ◽  
Wastewater Quality ◽  
Habitat Enhancement ◽  
Constructed Ecosystems

The use of macrophytic plants for the treatment of municipal wastewater is growing rapidly. The Constructed Ecosystems Research Facility (CERF) is a joint project of the Pima County Wastewater Management Department and The University of Arizona's Office of Arid Lands Studies. The facility consists of five 30-mil-hyperlon-lined raceways measuring 61 m long, 8.2 m wide, and 1.4 m deep and one slightly larger raceway. Research has been and is being conducted with aquatic plants such as water hyacinth (Eichhornia crassipes), duckweed (Lemna spp.), giant reed (Arundo donax), bulrush (Scirpus olneyi), black willow (Salix nigra), and cottonwood (Populus fremontii). Composite water samplers are used to collect refrigerated samples from incoming secondary wastewater from Pima County's Sewage Treatment Facility and from the effluent leaving each raceway. Water samples have been analyzed for parameters such as pH, BOD5, and total nitrogen. Microbiological studies have concentrated on the removal of indicator coliform bacteria, as well as Giardia, Cryptosporidium and viruses from the wastewater. Data from the water quality studies indicate that these constructed ecosystems reduce BOD5 consistently to below the 10 mg/L BOD5 tertiary standard, remove nitrogen as well as decrease the concentration of pathogens significantly.

Study on Pharmaceutical Wastewater by SBBR

2013 ◽  
Vol 295-298 ◽  
pp. 1380-1383
Author(s):  
Lei Zhu ◽  
Song Liu ◽  
Xun Wang ◽  
Hong Jiao Song
Keyword(s):  
Water Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Quality Standards ◽  
Raw Water ◽  
Effluent Water ◽  
Pharmaceutical Wastewater ◽  
Wastewater Quality ◽  
Quality Indexes

A pharmaceutical factory in Wuhan produces many pharmaceutical wastewaters every day. The wastewater raw water quality indexes are: the concentration of COD,BOD5, NH3-N,TP is 300,000mg/L, 200,000mg/L, 450mg/L,900 mg/L ; By the SBBR treatment, the effluent water quality indexes are:750mg/L,350mg/L,1.20mg/L,5mg/L,and the effluent water can accord with Wastewater quality standards for discharge to municipal sewers (CJ 343-2010) and be discharged after treatment in the sewage treatment plant by municipal sewers.

Wastewater quality relationships with reuse options

2001 ◽  
Vol 43 (10) ◽  
pp. 147-154 ◽  
Author(s):  
R. A. Patterson
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Chemical Properties ◽  
Oxygen Demand ◽  
Land Application ◽  
Chemical Additives ◽  
Beneficial Effects ◽  
Wastewater Quality ◽  
Reuse Options

The trend towards reuse of effluent for land application of domestic and industrial wastewater is driven by the need to maximise limited water resources and benefit from the plant nutrients available in the effluent. Of significant impact upon the value of the wastewater for reuse is its chemical properties as well as biochemical oxygen demand and suspended solids. While the sewage treatment plant is expected to treat all wastewater received to a minimum environmental standard, no efforts are given to reducing the chemical load derived from uses of chemicals in the domestic household. That the regulation of industry and commerce far exceeds those of the combined effects of thousands of household is remiss of environmental regulators. This paper examines the results of research into the more common sources of chemical additives to the wastewater stream. Twenty five potable water supplies are examined for their salt load, 20 liquid and 40 powder laundry detergents and five dishwashing products were used to simulate discharges to the sewer, measured for their phosphorus, salt and sodium concentrations. The results of the research indicate that choices in the products available for general use within the house can be made only where product labelling and consumer education is improved. Technical improvements in wastewater treatment are not the answer. The improvement in effluent quality will have significant beneficial effects upon land application areas and expand the range of reuse options available for commercial operations.

Monitoring of wastewater odours using an electronic nose

2000 ◽  
Vol 41 (6) ◽  
pp. 41-47 ◽  
Author(s):  
R. M. Stuetz ◽  
R. A. Fenner ◽  
S. J. Hall ◽  
I. Stratful ◽  
D. Loke
Keyword(s):  
Electronic Nose ◽  
Sensor Array ◽  
Sewage Treatment ◽  
Headspace Analysis ◽  
Organic Content ◽  
Wastewater Sample ◽  
Response Patterns ◽  
Initial Application ◽  
Wastewater Quality ◽  
Time Periods

The recent availability of commercial electronic nose instruments for odour detection may offer a rapid and relatively simple technique for monitoring wastewater odours. Results have been reported that for sewage odours from a single source a robust relationship can be found between the responses patterns of a sensor array (consisting of 12 conducting polymers) and their associated sewage odour concentrations. However, the initial application of this technology in the field of sewage treatment may not be for detecting nuisance odours but for wastewater monitoring and/or process control of a treatment works. A comparison between the odour profiles of sewage liquids and corresponding BOD, COD, TOC measurements has demonstrated the ability of a non-specific sensor array to detect changes in the organic content of a wastewater sample. Statistical analysis of the sensor response patterns with BOD value (for sewage samples from the inlet works, settlement tanks and the final effluent outlet) over a 5-month period, showed that for longer time periods the relationship between these parameters was essentially non-linear, but that over shorter time periods a linear relationship was evident. The findings showed that a number of different wastewater quality relationships could be formulated from the same electronic nose analysis of a sewage liquid. This suggests that the organic content of a wastewater, as well the potential of a wastewater to produce nuisance odours, could be predicted from a single headspace analysis of a sewage liquid using a sensor array.

scholarly journals LOCAL SEWAGE TREATMENT UNIT ENGINEERING

2019 ◽  
pp. 174-185
Author(s):  
E. I. Vyalkova ◽  
E. S. Glushchenko ◽  
A. V. Shalabodov ◽  
A. V. Shalabodov ◽  
E. Yu. Osipova
Keyword(s):  
Industrial Wastewater ◽  
Suspended Solids ◽  
Sewage Treatment ◽  
Dairy Production ◽  
Organic Substances ◽  
Treatment Technology ◽  
Treatment Unit ◽  
Large Fluctuations ◽  
Wastewater Quality ◽  
Treatment And Disposal

Problems of treatment and disposal of industrial wastewater from dairy enterprises exist in Russia and abroad. Industrial wastewater from dairy cannot be discharged even into the do-mestic sewage system. The local sewage treatment units of such enterprises require in detail studying the wastewater quality and supply modes. This article presents such parameters of the wastewater composition as environmental aggressiveness, organic matter, suspended solids, fats, nitrogen, phosphate, and others. It is shown that changes in the qualitative composition of effluents depend on the dairy production processes. A serious problem when choosing a treatment technology is the significant content of organic substances, fats, ammonium, ni-trates and phosphates in the resulting effluent. In addition, effluents are characterized by large fluctuations in quality when dumped in a sewage treatment unit or reagent solutions generated by the equipment flushing. A production process flowchart is proposed for the dairy water dis-posal with the appropriate water treatment for discharge into sewage treatment units.  

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