Numerical and Laboratory Modeling of Urban Sewage Discharge from Single port outfalls into Marine Environment

The development of more effective environmental policies is a common concern among scholars, government and the public. This paper attempts to investigate whether the environmental policy mix can really work. Taking the “Five Water Co-Treatment” policy of Zhejiang Province as an example, we applied the synthetic control method to examine the impact of multi-objective environmental policies on industrial sewage discharge and urban sewage discharge in Zhejiang. Further, we analyzed the effect of industrial value added and the length of water pipelines on sewage discharge and examined the potential environmental Kuznets curve (EKC) relationships. Our results of synthetic control imply that the “Five Water Co-Treatment” policy has increased the industrial and urban sewage discharge. However, the results of the extended analysis show that this is a process of standardizing sewage discharge and an embodiment of enhanced sewage treatment capacity. Therefore, we believe that the “Five Water Co-Treatment” policy is effective and should continue to advance.

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Study on Potassium Ferrate and Ferric Sulfate Combined with Enhanced Phosphorus Removal

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.295-298.1200 ◽

2013 ◽

Vol 295-298 ◽

pp. 1200-1203

Author(s):

Huan Zhou Zhang ◽

Lei Zhang ◽

Jian Guo Cui

Keyword(s):

Phosphorus Removal ◽

Removal Rate ◽

Ferric Sulfate ◽

Optimum Process ◽

Process Conditions ◽

Potassium Ferrate ◽

Sewage Discharge ◽

Urban Sewage ◽

Rate Study

Through the experiment about the potassium ferrate joint polymeric ferric sulfate removing phosphorus , add a small amount of potassium ferrate can significantly improve the phosphorus removal rate, study the optimum process conditions of the experiment about removing phosphorus, in order to make phosphorus contented in water treated reach A standard of the national urban sewage discharge standards.

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Contribution to the study of phosphate ion desorption during the dilution of urban sewage outfalls in the marine environment

Marine Pollution Bulletin ◽

10.1016/0025-326x(84)90144-9 ◽

1984 ◽

Vol 15 (12) ◽

pp. 444-447

Author(s):

Pascal David ◽

Francis Raffelini

Keyword(s):

Marine Environment ◽

Urban Sewage ◽

Phosphate Ion ◽

Ion Desorption

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Numerical Simulation of Impacts on Marine Environment by Sewage Discharge

MATEC Web of Conferences ◽

10.1051/matecconf/20152204019 ◽

2015 ◽

Vol 22 ◽

pp. 04019

Author(s):

Honglingyao Chen ◽

Hongtao Yuan

Keyword(s):

Numerical Simulation ◽

Marine Environment ◽

Sewage Discharge

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Ecological effects of sewage discharge in the marine environment

Proceedings of the Royal Society of London Series B Biological Sciences ◽

10.1098/rspb.1971.0034 ◽

1971 ◽

Vol 177 (1048) ◽

pp. 331-351 ◽

Cited By ~ 8

Keyword(s):

Nineteenth Century ◽

Marine Environment ◽

Pollution Control ◽

Open Channels ◽

Inland Waters ◽

Domestic Waste ◽

Sewage Discharge ◽

Large Cities ◽

Rivers And Streams ◽

Set Up

In has always been faced with the problem of getting rid of the waste he proves. Our palaeolithic and neolithic ancestors who subsisted on oysters and other ellfish in small coastal settlements simply threw the waste shells out of their ck doors to form kitchen middens which are now of great interest to the archaeogist. In medieval times sewage and domestic waste was thrown into the streets ere it flowed along open channels. Rats were plentiful and provided food for edatory birds such as the kite which were then common. In the nineteenth ntury, the system of sewers and water carriage evolved which did not produce many problems while the populations served remained scattered or reasonably hall, but which gave rise to pollution of rivers and streams as the size of towns sew. The problems produced were mainly inland and terrestrial however; little the marine environment was affected apart from estuaries within the boundaries or close to large cities such as London. The problem in inland waters became so serious however that a series of Royal Commissions was set up in the nineteenth century to report on methods of sewa treatment. The last of these Commissions, that on Sewage Disposal which report during the first fifteen years of this century, may be said to have initiated model attitudes to pollution control in inland waters.

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Marine Litter and Waste and Tourism by C Michael Hall

The Impact of Tourism on the Marine Environment ◽

10.23912/9781911635574-4457 ◽

2020 ◽

Author(s):

C Michael Hall

Keyword(s):

Marine Environment ◽

Environmental Effects ◽

Public Awareness ◽

Marine Litter ◽

Sewage Discharge ◽

Consumer Action ◽

Cruise Ships ◽

Remote Islands ◽

Marine Waste

Marine litter and waste have been found at all ocean depths (Pham et al. 2014) and in the most remote islands (Lavers & Bond, 2017) and form one of the most important contemporary issues facing the marine environment. Growing awareness of the impacts of marine plastics (Bergmann et al., 2015), together with concerns over the environmental effects of cruise ships, especially in relation to sewage discharge (Hall et al., 2017), has meant that marine waste has gained a high media profile and generated substantial public awareness and concern. Three-quarters of all marine litter is composed of plastic and this has become a focus for government and consumer action (UNEP, 2019). However, it is important to note that although there is growing awareness of plastics in the marine environment, and particularly their impact on wildlife and beach composition, the reality is that the predominance of plastics in marine litter is not necessarily the result of relatively more plastics compared to other waste in the oceans, but its durability (Andrady, 2015).

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Research on Sewage Discharge Effect Simulation in Cao Fei-Dian SCIP

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.864-867.1411 ◽

2013 ◽

Vol 864-867 ◽

pp. 1411-1414

Author(s):

Hang Yu ◽

Jing Feng Bai ◽

Xin Hai Wang

Keyword(s):

Marine Environment ◽

Model Test ◽

Deep Water ◽

Large Angle ◽

Hydraulic Model ◽

Premature Convergence ◽

Design Parameters ◽

Sewage Discharge ◽

Environmental Material ◽

Port Engineering

The sewage diffusion is an environmental material for protecting marine environment. It plays an important role in port engineering. Its effect under deep water was carried out between different diffuser design parameters based on the hydraulic model test, and Cao Fei-dian SCIP sewage marine disposal project was taken as an example. For this project, jet angle was controlled to be 0 degree, and horizontal angle was controlled to be 0 degree. It not only can ensure that sewage fully diluted mixed, also can avoid the premature convergence and sewage lifting. It is feasible for selecting large angle nozzle under deep water and there are some technical bases have been provided for other sewage marine disposal project.

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