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How are aquatic weeds used in controlling water pollution?

How are aquatic weeds used in controlling water pollution? Correct Answer They used to upgrade wastewater treatment

Aquatic weeds are used to upgrade wastewater treatment lagoons and treat chemical wastewaters. It can readily absorb, accumulate and concentrate heavy metals such as lead, mercury and cadmium.

Related Questions

Given below are two statements : Statement I: Aquatic weeds are fast-growing weeds that can attain very high productivities when cultivated on nutrient-rich wastewater such as domestic sewage. Statement II: Water hyacinth, Salvinia and duckweed are some examples of aquatic weeds. In the light of the above statements, choose the correct answer from the options given below:
 In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: Sources of water pollution are either point sources or non-point sources.  B: Point sources have one identifiable cause of the pollution, such as a storm drain or a wastewater treatment plant.  C: Marine pollution and nutrient pollution are subsets of water pollution. D: Water pollution can be classified as surface water or groundwater pollution.
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All crocodiles are aquatic animals. Some crocodiles are alligators. Conclusions: I. Some alligators are aquatic animals. II. All alligators are aquatic animals. III. Some aquatic animals are alligators.
Which of the following conclusions are most obvious in relation to the statement given below: Statement: Vehicular source contributes 60% to the total pollution level of Delhi, as informed in the Rajya Sabha today. Conclusion: I.  The court has ordered that the main source of pollution should be identified. II.  The problem of pollution is high on the worklist III. In the other cities also, vehicular source contributes around the same percentage level of pollution. IV. This matter was first raised in the Lok Sabha. V.  Not many towns in India face the problem of pollution.
Read the paragraph and answer the question that follows: Incessant combustion of fossil fuels emits toxic gases, polluting the air; urbanization results in deforestation and hence poor air quality; littering of plastic waste damages the productivity of soil and pollutes water bodies. Environmental pollution results in more serious consequences like – global warming, unexpected climatic changes, depletion of natural resources, species depletion, and various other adverse effects leading to a lowered sustainability of life on earth. Another prime contributor to the pollution of the environment is plastic pollution. Plastic bags those are not disposed of properly, reach the soil and water bodies, polluting them and damaging dependent lives. Being non-bio degradable plastic lingers around for years, rendering them useless. What is the prime contributor to pollution?
Which one of the following weeds is effective in controlling water pollution caused by industrial effluents?
In the following question, two statements are given each followed by two conclusions I and II. You have to consider the statements to be true even ifthey seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statement:
(I) The water pollutants are rising slowly and spoiling the sanctity of water.
(II) Main cause of water pollution is industrialization and lack of sustainable approach towards environment. Conclusions:
(I) Industries are mixing all the left-over slurries into the water body nearby causing immense pollution.
(II) Future generations are need to be thought about before getting involved in pollution causing activities.
Given below are three quantities named A, B and C. Based on the given information, determine the relation among the three quantities. Quantity A∶  A 30 litre mixture of wine and water has wine and water in the ratio 5∶ 7. How much water must be drawn off so that the ratio of wine and water becomes 25∶ 19? Quantity B∶ A 35 litre mixture of wine and water has wine and water in the ratio 1∶ 3. How much water must be drawn off so that the ratio of wine and water becomes 1.75∶ 3.35? Quantity C∶ A 27 litre mixture of wine and water has wine and water in the ratio 3∶ 2. How much water must be drawn off so that the ratio of wine and water becomes 81∶ 11?
In this question, a passage and a statement related to it have been given. Read carefully the verse and review the statement based on it. Delhi, which is one of India's capital an d one of the largest cities in the world, is undergoing severe crisis, due to its high level of urbanization, increasing population and high levels of pollution. Studies have proven that Are the biggest factors of pollution used for industrial and domestic use? And due to their use, people here emit large quantities of nitrogen oxides (NOx), ozone (O3), black carbon (BC) and microorganisms (PM). According to the 2015 Global Burden of Disease report, there were 1.09 million deaths due to PM 2.5 in India. Air pollution was included as one of the 10 biggest threats to health. According to the World Health Organization, 37 cities of India are among 100 worst polluted cities in the world, where PM10 was found to be the highest ever. For the production of ozone, together with sunlight and heat, nitrogen oxides (NOx) and organic compounds (VOCs) are needed simultaneously. Therefore, in the summer months, ozone is produced in large quantities in the cities. Statement: Air pollution is one of the top 10 factors affecting health in India. Select the most suitable from the following options A-statement is absolutely true B-statement is probably true C-statement can not be reviewed D-statement is completely false
Consider the following statements about the practices followed under “Jhoom farming”: A. After obtaining one set of crops the land is left as it is for some years. B. The bamboo or weeds which grow on the land are pulled out and burnt. C. The ash obtained on burning the weeds etc. is used as fertilizer. D. When the land is ready for farming it is deeply ploughed before dropping the seeds. The correct statements(s) is/are