Process Diagram

Band 7+: The diagram below shows how salt is removed from sea water to make it drinkable.

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Image for topic: The diagram below shows how salt is removed from sea water to make it drinkable.

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The image depicts a desalination process involving multiple stages: seawater intake leads to pre-treatment filter removing impurities and returning waste to sea, followed by high-pressure water forced through a membrane to separate salt, then post-treatment with lime, chlorine, and fluoride for storage and distribution to an integrated water supply system with a zoom-in on the membrane highlighting the separation of impurities, salt, and water molecules.

Given the complexity of the image, the above description may not be entirely accurate.

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The diagram illustrates the process involved in the removal of salt from seawater to produce purified water.

Overall, it is clear that the process consists of various stages, beginning with the transportation of salt water from the sea to the pre-treatment filter and ending with the post-treatment phase.

The first stage is when seawater is taken from the sea and passed through a pre-treatment filter, and the filter backwash is subsequently returned to the sea. At high pressure, the filtered water is pushed through a membrane. From this, impurities and salt that are particularly larger than the membrane’s pore size are extracted and sent back to the sea. As a result, it allows only water molecules to flow to the post-treatment phase.

At this point, during the post-treatment stage, water is treated with lime, chlorine, and fluoride to improve the quality of water. Finally, the purified water is stored in the storage before being prepared for an integrated water distribution system.

Word Count: 161

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Overall Band Score

7.5

(+/- 0.5)

Vocabulary Complexity:
C1 - Intricate
Strive to incorporate even richer and more precise language.

Grammar Mistakes: N/A

Vocabulary Repetition:

water: 7

filter: 3

post-treatment: 3

Try using synonyms for the above words

Task Response

The report effectively summarizes the desalination process, covering all key stages from seawater intake to water distribution. The description is clear and well-organized. To further enhance the response, consider adding more specific details about the purpose of each treatment chemical (lime, chlorine, fluoride) in the post-treatment phase. Also, while the overall structure is logical, ensure that transitions between stages are seamless and avoid any repetition of information.

Coherence & Cohesion

The report is generally well-organized and easy to follow. The stages of the desalination process are presented in a logical sequence. To improve coherence, consider using more varied cohesive devices to link ideas within and between paragraphs. For example, you could use more specific transitional phrases to indicate the relationships between stages or processes.

Lexical Resource

The report demonstrates a sufficient range of vocabulary related to the topic of desalination. The terminology used is generally appropriate and accurate. To further enhance the lexical resource, consider incorporating more precise or technical vocabulary related to water treatment and filtration processes. Also, try to use synonyms to avoid repetition of words like 'water', 'filter', and 'treatment'.

Grammatical Range & Accuracy

The report demonstrates a good command of grammar with only minor errors. The sentence structures are varied and generally accurate. To improve further, pay attention to the accuracy of articles (a/an/the) and prepositions. Also, ensure that verb tenses are consistent and appropriate throughout the report.

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The diagram below shows how salt is removed from sea water to make it drinkable.

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Band 7+: The diagram below shows how salt is removed from sea water to make it drinkable.

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Answers On The Same Topic:

The diagram below shows how salt is removed from sea water to make it drinkable.

The diagram below shows how salt is removed from sea water to make it drinkable.

The diagram below shows how salt is removed from sea water to make it drinkable.

The diagram below shows how salt is removed from sea water to make it drinkable.

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