Asian carp were imported in the 1970s to cleanse Deep South aquaculture and sewage treatment ponds.
So the proposal is that sewage treatment systems should be upgraded to deal with this.
FORBES: Women on Contraceptive Pill Should Pay $1,500 a Year More Tax
However, sewage treatment has many positive externalities as well, things not measured in market prices.
FORBES: Pollution Costs More Than What is Produced to Make the Pollution
Quite small things, such as smarter farming and better sewage treatment, could help a lot.
In an effort to clean this water before its release, many cities combine their stormwater treatment and sewage treatment facilities.
Solid waste combustion, sewage treatment, stone quarrying, marinas, and oil and coal-fired power plants have air pollution damages larger than their value added.
FORBES: Pollution Costs More Than What is Produced to Make the Pollution
They point to newly built sewage treatment plants, and sanitation workers who skim thousands of tons of floating rubbish off the reservoir each year.
The paper tells us that the value added of sewage treatment as measured at market prices is less than the costs imposed by pollution.
FORBES: Pollution Costs More Than What is Produced to Make the Pollution
Because so much of our infrastructure — including the electrical grid, water and sewage treatment, as well as our transportation system — is computerized.
Simply put, the sewage from our homes is combined with the sewers in the street before it is piped to the local sewage treatment plant control.
By 2015, the government intends to add 42 million tons of daily sewage treatment capacity to increase its urban waste water treatment rate to 85 percent.
FuelCell Energy touts the ability of its fuel cells to directly process a hydrocarbon, such as natural gas or waste gas from a sewage treatment facility.
We could walk to the Sewage Treatment Facility (they have the most beautiful pools of thick green water), hunt for coins on the pavement and share a sandwich.
FORBES: The Perils of Posting Scathing Reviews on Yelp and Angie's List
The approach may also have special value in developing nations, where access to electricity is limited and sewage treatment at remote sites is difficult or impossible as a result.
There is a strong suspicion that if this oestrogen is not removed during sewage treatment (some works do, some do not), it causes serious damage to rivers and lakes.
应用推荐