Process Diagram

Band 6+: The diagram below showsthe process of filtering raw water using a slow sand filter.

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Image for topic: The diagram below showsthe process of filtering raw water using a slow sand filter.

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The image depicts the filtration process through a slow sand filter showing raw water entering the break pressure chamber, passing through 60-90 cm thick sand and 20-30 cm thick gravel layers with underdrains, and exiting as filtered water.

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

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The given diagram demonstrates how raw water is filtered by a slow sand filter.

Overall, in order to clean the water, the slow sand filter uses a monotonous process, beginning with putting the water in a separate area and ending with completed water.

At the beginning of the process, the raw water is put in a system with a separate bin to break pressure chamber. Then they move to next bin, which has a filter with two layers have sand and gravel. The water with impurities such as dirties and particles from the first bin are placed on the top. This is followed by filtering slowly by sand and gravel.

The first layer of this filter is sand with the thickness of 60 to 90 centimeters. After that, the water goes down to the gravel layer from 20 to 30 centimeters of thickness. After finishing, the completed water moves to the area called “underdrains”, which release the result of the filter into another bin. This is finished by letting the filtered water outside to use for various purposes.

Word Count: 178

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Overall Band Score

6.5

(+/- 0.5)

Vocabulary Complexity:
B2 - Upper Intermediate
Opt for even more advanced words when appropriate.

Grammar Mistakes: N/A

Vocabulary Repetition:

water: 8

filter: 4

Try using synonyms for the above words

Task Response

The report adequately covers the process of water filtration using a slow sand filter, presenting a clear overview and the key stages involved. However, there's room for improvement in terms of detail and precision. To enhance the response, consider providing more specific information about the purpose of each stage and the materials involved. Also, ensure accurate use of terminology and avoid informal language.

Coherence & Cohesion

The report provides a general overview of the water filtration process, but the organization could be improved for better clarity. The description of the process is somewhat fragmented, and transitions between steps could be smoother. Consider using more cohesive devices to link ideas and improve the flow of information. Paragraphing is adequate but could be more strategically employed to group related information.

Lexical Resource

The vocabulary used is generally appropriate for the task, but there is room for improvement in terms of precision and variety. Some phrases are a bit vague or repetitive. Try to incorporate more specific and descriptive language to enhance the clarity and impact of your writing. For example, instead of 'putting the water in a separate area,' you could use a more precise term related to water treatment.

Grammatical Range & Accuracy

The report contains several grammatical errors and phrasing issues that affect clarity. While the overall meaning is understandable, these errors detract from the report's professionalism and impact. Focus on improving sentence structure, subject-verb agreement, and correct use of articles and prepositions. Review and correct errors to enhance grammatical accuracy.

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